diff options
| author | Jinke Han <jinkehan@didiglobal.com> | 2026-09-08 15:37:42 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2026-09-17 09:48:42 +0200 |
| commit | a5f7a5bb3b7f28ba7e4fa246775b29a0e5537255 (patch) | |
| tree | 73fef824f9a846cf935869d0dbc5070ef6e2f741 /drivers/thermal/qcom | |
| download | linux-stable-a5f7a5bb3b7f28ba7e4fa246775b29a0e5537255.tar.gz linux-stable-a5f7a5bb3b7f28ba7e4fa246775b29a0e5537255.zip | |
x86/kprobes: Fix crash when probing CS CALL instructionsgrafted
When using eBPF to probe CS CALL instructions within a function,
a crash can be triggered.
The eBPF tool probes offset 257 of the __hrtimer_run_queues()
function:
<__hrtimer_run_queues+249>: nopl 0x0(%rax,%rax,1)
<__hrtimer_run_queues+254>: mov %r14,%rdi
<__hrtimer_run_queues+257>: cs call <__x86_indirect_thunk_r12>
<__hrtimer_run_queues+263>: mov %eax,%r12d
<__hrtimer_run_queues+266>: xchg %ax,%ax
<__hrtimer_run_queues+268>: mov %r13,%rdi
Which triggers this crash:
BUG: unable to handle page fault for address: 00000000000f41c9
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0
Oops: 0002 [#1] SMP NOPTI
CPU: 1 PID: 0 Comm: swapper/1 Kdump: loaded Tainted: P
RIP: 0010:__hrtimer_run_queues+0x106/0x230
Note that __hrtimer_run_queues+0x106 is __hrtimer_run_queues+262, which is
at the 6th byte of the above CS CALL instruction. Since the CS CALL
instruction occupies 6 bytes, the exception occurred in the middle of that
call instruction.
The root cause is that when using eBPF tools to probe in the middle of a
function, a kprobe with INT3 is used as the underlying implementation.
During single-step emulation of the original CALL instruction,
int3_emulate_call() assumes that the probed CALL instruction is 5 bytes
long. However, the actual CS-prefixed CALL instruction occupies 6 bytes,
so it constructs an incorrect exception return address. When the CPU
returns from the kprobe handler, the next instruction to be executed is at
the address of the last byte of that CS CALL instruction. Coincidentally,
starting from that address, the CPU fetches and decodes a completely
different instruction, which ultimately triggers a kernel crash.
Fix the issue by using the actual instruction length obtained from
the instruction decoder when constructing the exception return
address, rather than relying on the hardcoded CALL_INSN_SIZE macro.
[ mingo: Refined the changelog ]
Fixes: 6256e668b7af ("x86/kprobes: Use int3 instead of debug trap for single-step")
Suggested-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Jinke Han <jinkehan@didiglobal.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://patch.msgid.link/20260908073742.GA10517@didi-ThinkCentre-M920t-N000
Diffstat (limited to 'drivers/thermal/qcom')
| -rw-r--r-- | drivers/thermal/qcom/Kconfig | 67 | ||||
| -rw-r--r-- | drivers/thermal/qcom/Makefile | 10 | ||||
| -rw-r--r-- | drivers/thermal/qcom/lmh.c | 252 | ||||
| -rw-r--r-- | drivers/thermal/qcom/qcom-spmi-adc-tm5-gen3.c | 434 | ||||
| -rw-r--r-- | drivers/thermal/qcom/qcom-spmi-adc-tm5.c | 1069 | ||||
| -rw-r--r-- | drivers/thermal/qcom/qcom-spmi-mbg-tm.c | 257 | ||||
| -rw-r--r-- | drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 907 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens-8960.c | 285 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens-v0_1.c | 408 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens-v1.c | 258 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens-v2.c | 316 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens.c | 1478 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens.h | 684 |
13 files changed, 6425 insertions, 0 deletions
diff --git a/drivers/thermal/qcom/Kconfig b/drivers/thermal/qcom/Kconfig new file mode 100644 index 000000000..a8cf7e258 --- /dev/null +++ b/drivers/thermal/qcom/Kconfig @@ -0,0 +1,67 @@ +# SPDX-License-Identifier: GPL-2.0-only +config QCOM_TSENS + tristate "Qualcomm TSENS Temperature Alarm" + depends on NVMEM_QCOM_QFPROM + depends on ARCH_QCOM || COMPILE_TEST + help + This enables the thermal sysfs driver for the TSENS device. It shows + up in Sysfs as a thermal zone with multiple trip points. Disabling the + thermal zone device via the mode file results in disabling the sensor. + Also able to set threshold temperature for both hot and cold and update + when a threshold is reached. + +config QCOM_SPMI_ADC_TM5 + tristate "Qualcomm SPMI PMIC Thermal Monitor ADC5" + depends on OF && SPMI && IIO + select REGMAP_SPMI + select QCOM_VADC_COMMON + help + This enables the thermal driver for the ADC thermal monitoring + device. It shows up as a thermal zone with multiple trip points. + Thermal client sets threshold temperature for both warm and cool and + gets updated when a threshold is reached. + +config QCOM_SPMI_MBG_TM + tristate "Qualcomm SPMI PMIC MBG Temperature monitor" + depends on QCOM_SPMI_ADC5_GEN3 + select REGMAP_SPMI + help + This enables Qualcomm PMIC MBG (Master Bandgap) thermal monitor. + + The MBG block monitors PMIC die temperature in hardware and raises an + interrupt when the programmed threshold is crossed. + + Temperature is read from the associated ADC channel, and threshold + interrupts are forwarded to the thermal framework as trip-violation + events. Current support handles a single LVL1 upper (hot) trip. + +config QCOM_SPMI_ADC_TM5_GEN3 + tristate "Qualcomm SPMI PMIC Thermal Monitor ADC5 Gen3" + depends on QCOM_SPMI_ADC5_GEN3 + help + This enables the auxiliary thermal driver for the ADC5 Gen3 thermal + monitoring device. It shows up as a thermal zone with multiple trip points. + Thermal client sets threshold temperature for both warm and cool and + gets updated when a threshold is reached. + +config QCOM_SPMI_TEMP_ALARM + tristate "Qualcomm SPMI PMIC Temperature Alarm" + depends on OF && SPMI && IIO + select REGMAP_SPMI + help + This enables a thermal sysfs driver for Qualcomm plug-and-play (QPNP) + PMIC devices. It shows up in sysfs as a thermal sensor with multiple + trip points. The temperature reported by the thermal sensor reflects the + real time die temperature if an ADC is present or an estimate of the + temperature based upon the over temperature stage value. + +config QCOM_LMH + tristate "Qualcomm Limits Management Hardware" + depends on ARCH_QCOM || COMPILE_TEST + select QCOM_SCM + help + This enables initialization of Qualcomm limits management + hardware(LMh). LMh allows for hardware-enforced mitigation for cpus based on + input from temperature and current sensors. On many newer Qualcomm SoCs + LMh is configured in the firmware and this feature need not be enabled. + However, on certain SoCs like sdm845 LMh has to be configured from kernel. diff --git a/drivers/thermal/qcom/Makefile b/drivers/thermal/qcom/Makefile new file mode 100644 index 000000000..937ba0fe2 --- /dev/null +++ b/drivers/thermal/qcom/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0-only +obj-$(CONFIG_QCOM_TSENS) += qcom_tsens.o + +qcom_tsens-y += tsens.o tsens-v2.o tsens-v1.o tsens-v0_1.o \ + tsens-8960.o +obj-$(CONFIG_QCOM_SPMI_ADC_TM5) += qcom-spmi-adc-tm5.o +obj-$(CONFIG_QCOM_SPMI_ADC_TM5_GEN3) += qcom-spmi-adc-tm5-gen3.o +obj-$(CONFIG_QCOM_SPMI_MBG_TM) += qcom-spmi-mbg-tm.o +obj-$(CONFIG_QCOM_SPMI_TEMP_ALARM) += qcom-spmi-temp-alarm.o +obj-$(CONFIG_QCOM_LMH) += lmh.o diff --git a/drivers/thermal/qcom/lmh.c b/drivers/thermal/qcom/lmh.c new file mode 100644 index 000000000..99396b93e --- /dev/null +++ b/drivers/thermal/qcom/lmh.c @@ -0,0 +1,252 @@ +// SPDX-License-Identifier: GPL-2.0-only + +/* + * Copyright (C) 2021, Linaro Limited. All rights reserved. + */ +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/irqdesc.h> +#include <linux/irqdomain.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/of_platform.h> +#include <linux/slab.h> +#include <linux/firmware/qcom/qcom_scm.h> + +#define LMH_NODE_DCVS 0x44435653 +#define LMH_CLUSTER0_NODE_ID 0x6370302D +#define LMH_CLUSTER1_NODE_ID 0x6370312D + +#define LMH_SUB_FN_THERMAL 0x54484D4C +#define LMH_SUB_FN_CRNT 0x43524E54 +#define LMH_SUB_FN_REL 0x52454C00 +#define LMH_SUB_FN_BCL 0x42434C00 + +#define LMH_ALGO_MODE_ENABLE 0x454E424C +#define LMH_TH_HI_THRESHOLD 0x48494748 +#define LMH_TH_LOW_THRESHOLD 0x4C4F5700 +#define LMH_TH_ARM_THRESHOLD 0x41524D00 + +#define LMH_REG_DCVS_INTR_CLR 0x8 + +#define LMH_ENABLE_ALGOS 1 + +struct lmh_hw_data { + void __iomem *base; + struct irq_domain *domain; + int irq; +}; + +static irqreturn_t lmh_handle_irq(int hw_irq, void *data) +{ + struct lmh_hw_data *lmh_data = data; + int irq = irq_find_mapping(lmh_data->domain, 0); + + /* Call the cpufreq driver to handle the interrupt */ + if (irq) + generic_handle_irq(irq); + + return IRQ_HANDLED; +} + +static void lmh_enable_interrupt(struct irq_data *d) +{ + struct lmh_hw_data *lmh_data = irq_data_get_irq_chip_data(d); + + /* Clear the existing interrupt */ + writel(0xff, lmh_data->base + LMH_REG_DCVS_INTR_CLR); + enable_irq(lmh_data->irq); +} + +static void lmh_disable_interrupt(struct irq_data *d) +{ + struct lmh_hw_data *lmh_data = irq_data_get_irq_chip_data(d); + + disable_irq_nosync(lmh_data->irq); +} + +static struct irq_chip lmh_irq_chip = { + .name = "lmh", + .irq_enable = lmh_enable_interrupt, + .irq_disable = lmh_disable_interrupt +}; + +static int lmh_irq_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw) +{ + struct lmh_hw_data *lmh_data = d->host_data; + static struct lock_class_key lmh_lock_key; + static struct lock_class_key lmh_request_key; + + /* + * This lock class tells lockdep that GPIO irqs are in a different + * category than their parents, so it won't report false recursion. + */ + irq_set_lockdep_class(irq, &lmh_lock_key, &lmh_request_key); + irq_set_chip_and_handler(irq, &lmh_irq_chip, handle_simple_irq); + irq_set_chip_data(irq, lmh_data); + + return 0; +} + +static const struct irq_domain_ops lmh_irq_ops = { + .map = lmh_irq_map, + .xlate = irq_domain_xlate_onecell, +}; + +static int lmh_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct device_node *cpu_node; + struct lmh_hw_data *lmh_data; + int temp_low, temp_high, temp_arm, cpu_id, ret; + unsigned int enable_alg; + u32 node_id; + + if (!qcom_scm_is_available()) + return -EPROBE_DEFER; + + lmh_data = devm_kzalloc(dev, sizeof(*lmh_data), GFP_KERNEL); + if (!lmh_data) + return -ENOMEM; + + lmh_data->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(lmh_data->base)) + return PTR_ERR(lmh_data->base); + + cpu_node = of_parse_phandle(np, "cpus", 0); + if (!cpu_node) + return -EINVAL; + cpu_id = of_cpu_node_to_id(cpu_node); + of_node_put(cpu_node); + + ret = of_property_read_u32(np, "qcom,lmh-temp-high-millicelsius", &temp_high); + if (ret) { + dev_err(dev, "missing qcom,lmh-temp-high-millicelsius property\n"); + return ret; + } + + ret = of_property_read_u32(np, "qcom,lmh-temp-low-millicelsius", &temp_low); + if (ret) { + dev_err(dev, "missing qcom,lmh-temp-low-millicelsius property\n"); + return ret; + } + + ret = of_property_read_u32(np, "qcom,lmh-temp-arm-millicelsius", &temp_arm); + if (ret) { + dev_err(dev, "missing qcom,lmh-temp-arm-millicelsius property\n"); + return ret; + } + + /* + * Only sdm845 has lmh hardware currently enabled from hlos. If this is needed + * for other platforms, revisit this to check if the <cpu-id, node-id> should be part + * of a dt match table. + */ + if (cpu_id == 0) { + node_id = LMH_CLUSTER0_NODE_ID; + } else if (cpu_id == 4) { + node_id = LMH_CLUSTER1_NODE_ID; + } else { + dev_err(dev, "Wrong CPU id associated with LMh node\n"); + return -EINVAL; + } + + if (!qcom_scm_lmh_dcvsh_available()) + return -EINVAL; + + enable_alg = (uintptr_t)of_device_get_match_data(dev); + + if (enable_alg) { + ret = qcom_scm_lmh_dcvsh(LMH_SUB_FN_CRNT, LMH_ALGO_MODE_ENABLE, 1, + LMH_NODE_DCVS, node_id, 0); + if (ret) + dev_err(dev, "Error %d enabling current subfunction\n", ret); + + ret = qcom_scm_lmh_dcvsh(LMH_SUB_FN_REL, LMH_ALGO_MODE_ENABLE, 1, + LMH_NODE_DCVS, node_id, 0); + if (ret) + dev_err(dev, "Error %d enabling reliability subfunction\n", ret); + + ret = qcom_scm_lmh_dcvsh(LMH_SUB_FN_BCL, LMH_ALGO_MODE_ENABLE, 1, + LMH_NODE_DCVS, node_id, 0); + if (ret) + dev_err(dev, "Error %d enabling BCL subfunction\n", ret); + + ret = qcom_scm_lmh_dcvsh(LMH_SUB_FN_THERMAL, LMH_ALGO_MODE_ENABLE, 1, + LMH_NODE_DCVS, node_id, 0); + if (ret) { + dev_err(dev, "Error %d enabling thermal subfunction\n", ret); + return ret; + } + + ret = qcom_scm_lmh_profile_change(0x1); + if (ret) { + dev_err(dev, "Error %d changing profile\n", ret); + return ret; + } + } + + /* Set default thermal trips */ + ret = qcom_scm_lmh_dcvsh(LMH_SUB_FN_THERMAL, LMH_TH_ARM_THRESHOLD, temp_arm, + LMH_NODE_DCVS, node_id, 0); + if (ret) { + dev_err(dev, "Error setting thermal ARM threshold%d\n", ret); + return ret; + } + + ret = qcom_scm_lmh_dcvsh(LMH_SUB_FN_THERMAL, LMH_TH_HI_THRESHOLD, temp_high, + LMH_NODE_DCVS, node_id, 0); + if (ret) { + dev_err(dev, "Error setting thermal HI threshold%d\n", ret); + return ret; + } + + ret = qcom_scm_lmh_dcvsh(LMH_SUB_FN_THERMAL, LMH_TH_LOW_THRESHOLD, temp_low, + LMH_NODE_DCVS, node_id, 0); + if (ret) { + dev_err(dev, "Error setting thermal LOW threshold%d\n", ret); + return ret; + } + + lmh_data->irq = platform_get_irq(pdev, 0); + lmh_data->domain = irq_domain_create_linear(dev_fwnode(dev), 1, &lmh_irq_ops, lmh_data); + if (!lmh_data->domain) { + dev_err(dev, "Error adding irq_domain\n"); + return -EINVAL; + } + + /* Disable the irq and let cpufreq enable it when ready to handle the interrupt */ + irq_set_status_flags(lmh_data->irq, IRQ_NOAUTOEN); + ret = devm_request_irq(dev, lmh_data->irq, lmh_handle_irq, + IRQF_NO_THREAD | IRQF_NO_SUSPEND, + "lmh-irq", lmh_data); + if (ret) { + irq_domain_remove(lmh_data->domain); + return ret; + } + + return 0; +} + +static const struct of_device_id lmh_table[] = { + { .compatible = "qcom,sc8180x-lmh", }, + { .compatible = "qcom,sdm845-lmh", .data = (void *)LMH_ENABLE_ALGOS}, + { .compatible = "qcom,sm8150-lmh", }, + {} +}; +MODULE_DEVICE_TABLE(of, lmh_table); + +static struct platform_driver lmh_driver = { + .probe = lmh_probe, + .driver = { + .name = "qcom-lmh", + .of_match_table = lmh_table, + .suppress_bind_attrs = true, + }, +}; +module_platform_driver(lmh_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("QCOM LMh driver"); diff --git a/drivers/thermal/qcom/qcom-spmi-adc-tm5-gen3.c b/drivers/thermal/qcom/qcom-spmi-adc-tm5-gen3.c new file mode 100644 index 000000000..9cf552d36 --- /dev/null +++ b/drivers/thermal/qcom/qcom-spmi-adc-tm5-gen3.c @@ -0,0 +1,434 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#include <linux/auxiliary_bus.h> +#include <linux/bitfield.h> +#include <linux/bits.h> +#include <linux/cleanup.h> +#include <linux/container_of.h> +#include <linux/device/devres.h> +#include <linux/dev_printk.h> +#include <linux/err.h> +#include <linux/iio/adc/qcom-adc5-gen3-common.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/thermal.h> +#include <linux/types.h> +#include <linux/unaligned.h> + +#include "../thermal_hwmon.h" + +#define ADC_TM5_GEN3_CONFIG_REGS 12 + +struct device; +struct adc_tm5_gen3_chip; + +/** + * struct adc_tm5_gen3_channel_props - ADC_TM channel structure + * @common_props: structure with common ADC channel properties. + * @chip: ADC TM device. + * @tzd: pointer to thermal device corresponding to TM channel. + * @sdam_index: SDAM on which this TM channel lies. + * @timer: time period of recurring TM measurement. + * @tm_chan_index: TM channel number used. + * @high_thr_en: TM high threshold crossing detection enabled. + * @low_thr_en: TM low threshold crossing detection enabled. + */ +struct adc_tm5_gen3_channel_props { + struct adc5_channel_common_prop common_props; + struct adc_tm5_gen3_chip *chip; + struct thermal_zone_device *tzd; + unsigned int sdam_index; + unsigned int timer; + unsigned int tm_chan_index; + bool high_thr_en; + bool low_thr_en; +}; + +/** + * struct adc_tm5_gen3_chip - ADC Thermal Monitoring device structure + * @dev_data: Top-level ADC device data. + * @chan_props: Array of ADC_TM channel structures. + * @dev: SPMI ADC5 Gen3 device. + * @nchannels: number of TM channels allocated + */ +struct adc_tm5_gen3_chip { + struct adc5_device_data *dev_data; + struct adc_tm5_gen3_channel_props *chan_props; + struct device *dev; + unsigned int nchannels; +}; + +DEFINE_GUARD(adc5_gen3, struct adc_tm5_gen3_chip *, + adc5_gen3_mutex_lock(_T->dev), adc5_gen3_mutex_unlock(_T->dev)) + +static int get_sdam_from_irq(struct adc_tm5_gen3_chip *adc_tm5, int irq) +{ + for (int i = 0; i < adc_tm5->dev_data->num_sdams; i++) { + if (adc_tm5->dev_data->base[i].irq == irq) + return i; + } + return -ENOENT; +} + +static irqreturn_t adctm5_gen3_isr(int irq, void *dev_id) +{ + struct adc_tm5_gen3_chip *adc_tm5 = dev_id; + int ret, sdam_num; + u8 tm_status[2]; + u8 status, val; + + sdam_num = get_sdam_from_irq(adc_tm5, irq); + if (sdam_num < 0) + return IRQ_NONE; + + ret = adc5_gen3_read(adc_tm5->dev_data, sdam_num, ADC5_GEN3_STATUS1, + &status, sizeof(status)); + if (ret) + return IRQ_NONE; + + if (status & ADC5_GEN3_STATUS1_CONV_FAULT) { + val = ADC5_GEN3_CONV_ERR_CLR_REQ; + adc5_gen3_status_clear(adc_tm5->dev_data, sdam_num, + ADC5_GEN3_CONV_ERR_CLR, &val, 1); + return IRQ_HANDLED; + } + + ret = adc5_gen3_read(adc_tm5->dev_data, sdam_num, ADC5_GEN3_TM_HIGH_STS, + tm_status, sizeof(tm_status)); + if (ret) + return IRQ_NONE; + + if (tm_status[0] || tm_status[1]) + return IRQ_WAKE_THREAD; + + return IRQ_NONE; +} + +static irqreturn_t adctm5_gen3_isr_thread(int irq, void *dev_id) +{ + struct adc_tm5_gen3_chip *adc_tm5 = dev_id; + u8 tm_status[2]; + int sdam_index; + + sdam_index = get_sdam_from_irq(adc_tm5, irq); + if (sdam_index < 0) + return IRQ_NONE; + + scoped_guard(adc5_gen3, adc_tm5) { + int ret; + + ret = adc5_gen3_read(adc_tm5->dev_data, sdam_index, ADC5_GEN3_TM_HIGH_STS, + tm_status, sizeof(tm_status)); + if (ret) + return IRQ_NONE; + + ret = adc5_gen3_status_clear(adc_tm5->dev_data, sdam_index, + ADC5_GEN3_TM_HIGH_STS_CLR, tm_status, + sizeof(tm_status)); + if (ret) + return IRQ_NONE; + } + + for (int i = 0; i < adc_tm5->nchannels; i++) { + struct adc_tm5_gen3_channel_props *chan_prop = &adc_tm5->chan_props[i]; + int offset = chan_prop->tm_chan_index; + bool upper_set, lower_set; + + if (chan_prop->sdam_index != sdam_index) + continue; + + upper_set = ((tm_status[0] & BIT(offset)) && chan_prop->high_thr_en); + lower_set = ((tm_status[1] & BIT(offset)) && chan_prop->low_thr_en); + + if (!(upper_set || lower_set)) + continue; + + thermal_zone_device_update(chan_prop->tzd, THERMAL_TRIP_VIOLATED); + } + + return IRQ_HANDLED; +} + +static int adc_tm5_gen3_get_temp(struct thermal_zone_device *tz, int *temp) +{ + struct adc_tm5_gen3_channel_props *prop = thermal_zone_device_priv(tz); + struct adc_tm5_gen3_chip *adc_tm5; + + if (!prop || !prop->chip) + return -EINVAL; + + adc_tm5 = prop->chip; + + return adc5_gen3_get_scaled_reading(adc_tm5->dev, &prop->common_props, temp); +} + +static int adc_tm5_gen3_disable_channel(struct adc_tm5_gen3_channel_props *prop) +{ + struct adc_tm5_gen3_chip *adc_tm5 = prop->chip; + int ret; + u8 val; + + prop->high_thr_en = false; + prop->low_thr_en = false; + + ret = adc5_gen3_poll_wait_hs(adc_tm5->dev_data, prop->sdam_index); + if (ret) + return ret; + + val = BIT(prop->tm_chan_index); + ret = adc5_gen3_write(adc_tm5->dev_data, prop->sdam_index, + ADC5_GEN3_TM_HIGH_STS_CLR, &val, sizeof(val)); + if (ret) + return ret; + + ret = adc5_gen3_write(adc_tm5->dev_data, prop->sdam_index, + ADC5_GEN3_TM_LOW_STS_CLR, &val, sizeof(val)); + if (ret) + return ret; + + val = MEAS_INT_DISABLE; + ret = adc5_gen3_write(adc_tm5->dev_data, prop->sdam_index, + ADC5_GEN3_TIMER_SEL, &val, sizeof(val)); + if (ret) + return ret; + + /* To indicate there is an actual conversion request */ + val = ADC5_GEN3_CHAN_CONV_REQ | prop->tm_chan_index; + ret = adc5_gen3_write(adc_tm5->dev_data, prop->sdam_index, + ADC5_GEN3_PERPH_CH, &val, sizeof(val)); + if (ret) + return ret; + + val = ADC5_GEN3_CONV_REQ_REQ; + return adc5_gen3_write(adc_tm5->dev_data, prop->sdam_index, + ADC5_GEN3_CONV_REQ, &val, sizeof(val)); +} + +static int adc_tm5_gen3_configure(struct adc_tm5_gen3_channel_props *prop, + int low_temp, int high_temp) +{ + struct adc_tm5_gen3_chip *adc_tm5 = prop->chip; + u8 buf[ADC_TM5_GEN3_CONFIG_REGS]; + u8 conv_req; + u16 adc_code; + int ret; + + ret = adc5_gen3_poll_wait_hs(adc_tm5->dev_data, prop->sdam_index); + if (ret < 0) + return ret; + + ret = adc5_gen3_read(adc_tm5->dev_data, prop->sdam_index, + ADC5_GEN3_SID, buf, sizeof(buf)); + if (ret < 0) + return ret; + + /* Write SID */ + buf[0] = FIELD_PREP(ADC5_GEN3_SID_MASK, prop->common_props.sid); + + /* Select TM channel and indicate there is an actual conversion request */ + buf[1] = ADC5_GEN3_CHAN_CONV_REQ | prop->tm_chan_index; + + buf[2] = prop->timer; + + /* Digital param selection */ + adc5_gen3_update_dig_param(&prop->common_props, &buf[3]); + + /* Update fast average sample value */ + buf[4] = FIELD_PREP(ADC5_GEN3_FAST_AVG_CTL_SAMPLES_MASK, + prop->common_props.avg_samples) | ADC5_GEN3_FAST_AVG_CTL_EN; + + /* Select ADC channel */ + buf[5] = prop->common_props.channel; + + /* Select HW settle delay for channel */ + buf[6] = FIELD_PREP(ADC5_GEN3_HW_SETTLE_DELAY_MASK, + prop->common_props.hw_settle_time_us); + + buf[7] = 0; + + /* High temperature corresponds to low voltage threshold */ + prop->low_thr_en = (high_temp != INT_MAX); + if (prop->low_thr_en) { + adc_code = qcom_adc_tm5_gen2_temp_res_scale(high_temp); + put_unaligned_le16(adc_code, &buf[8]); + buf[7] |= ADC5_GEN3_LOW_THR_INT_EN; + } + + /* Low temperature corresponds to high voltage threshold */ + prop->high_thr_en = (low_temp != -INT_MAX); + if (prop->high_thr_en) { + adc_code = qcom_adc_tm5_gen2_temp_res_scale(low_temp); + put_unaligned_le16(adc_code, &buf[10]); + buf[7] |= ADC5_GEN3_HIGH_THR_INT_EN; + } + + ret = adc5_gen3_write(adc_tm5->dev_data, prop->sdam_index, ADC5_GEN3_SID, + buf, sizeof(buf)); + if (ret < 0) + return ret; + + conv_req = ADC5_GEN3_CONV_REQ_REQ; + return adc5_gen3_write(adc_tm5->dev_data, prop->sdam_index, + ADC5_GEN3_CONV_REQ, &conv_req, sizeof(conv_req)); +} + +static int adc_tm5_gen3_set_trip_temp(struct thermal_zone_device *tz, + int low_temp, int high_temp) +{ + struct adc_tm5_gen3_channel_props *prop = thermal_zone_device_priv(tz); + struct adc_tm5_gen3_chip *adc_tm5; + + if (!prop || !prop->chip) + return -EINVAL; + + adc_tm5 = prop->chip; + + dev_dbg(adc_tm5->dev, "channel:%s, low_temp(mdegC):%d, high_temp(mdegC):%d\n", + prop->common_props.label, low_temp, high_temp); + + guard(adc5_gen3)(adc_tm5); + + return adc_tm5_gen3_configure(prop, low_temp, high_temp); +} + +static const struct thermal_zone_device_ops adc_tm_ops = { + .get_temp = adc_tm5_gen3_get_temp, + .set_trips = adc_tm5_gen3_set_trip_temp, +}; + +static int adc_tm5_register_tzd(struct adc_tm5_gen3_chip *adc_tm5) +{ + struct thermal_zone_device *tzd; + unsigned int channel; + int ret; + + for (int i = 0; i < adc_tm5->nchannels; i++) { + channel = ADC5_GEN3_V_CHAN(adc_tm5->chan_props[i].common_props); + tzd = devm_thermal_of_zone_register(adc_tm5->dev, channel, + &adc_tm5->chan_props[i], + &adc_tm_ops); + if (IS_ERR(tzd)) { + if (PTR_ERR(tzd) == -ENODEV) { + dev_dbg(adc_tm5->dev, + "thermal sensor on channel %d is not used\n", + channel); + continue; + } + return PTR_ERR(tzd); + } + adc_tm5->chan_props[i].tzd = tzd; + ret = devm_thermal_add_hwmon_sysfs(adc_tm5->dev, tzd); + if (ret) + return ret; + } + + return 0; +} + +static void adc5_gen3_disable(void *data) +{ + struct adc_tm5_gen3_chip *adc_tm5 = data; + + guard(adc5_gen3)(adc_tm5); + + /* Disable all available TM channels */ + for (int i = 0; i < adc_tm5->nchannels; i++) + adc_tm5_gen3_disable_channel(&adc_tm5->chan_props[i]); +} + +static int adc_tm5_probe(struct auxiliary_device *aux_dev, + const struct auxiliary_device_id *id) +{ + struct adc_tm5_gen3_chip *adc_tm5; + struct tm5_aux_dev_wrapper *aux_dev_wrapper; + struct device *dev = &aux_dev->dev; + int ret; + + adc_tm5 = devm_kzalloc(dev, sizeof(*adc_tm5), GFP_KERNEL); + if (!adc_tm5) + return -ENOMEM; + + aux_dev_wrapper = container_of(aux_dev, struct tm5_aux_dev_wrapper, aux_dev); + + adc_tm5->dev = dev; + adc_tm5->dev_data = aux_dev_wrapper->dev_data; + adc_tm5->nchannels = aux_dev_wrapper->n_tm_channels; + adc_tm5->chan_props = devm_kcalloc(dev, aux_dev_wrapper->n_tm_channels, + sizeof(*adc_tm5->chan_props), GFP_KERNEL); + if (!adc_tm5->chan_props) + return -ENOMEM; + + for (int i = 0; i < adc_tm5->nchannels; i++) { + /* + * Since the first channel of the first SDAM is reserved for + * immediate ADC conversions, TM channel count must start from + * the channel just after it. The variable tm_count is used to + * calculate SDAM and TM channel index on that SDAM correctly + * for each TM channel. + */ + int tm_count = i + 1; + + adc_tm5->chan_props[i].common_props = aux_dev_wrapper->tm_props[i]; + adc_tm5->chan_props[i].timer = MEAS_INT_1S; + adc_tm5->chan_props[i].sdam_index = tm_count / 8; + adc_tm5->chan_props[i].tm_chan_index = tm_count % 8; + adc_tm5->chan_props[i].chip = adc_tm5; + } + + /* + * ADC_TM channels are enabled in the loop in adc_tm5_register_tzd() as + * part of the set_trips calls during thermal zone registration. This + * action is to disable them all in case of probe failure. + */ + ret = devm_add_action(dev, adc5_gen3_disable, adc_tm5); + if (ret) + return ret; + + ret = adc_tm5_register_tzd(adc_tm5); + if (ret) + return ret; + + for (int i = 0; i < adc_tm5->dev_data->num_sdams; i++) { + u32 irq_flags = IRQF_ONESHOT; + + /* + * First SDAM's interrupt is shared between main ADC driver and + * auxiliary TM driver, so its flags must include IRQF_SHARED. + * This is not needed for other SDAMs as they will be used only + * for TM functionality. + */ + if (i == 0) + irq_flags |= IRQF_SHARED; + + ret = devm_request_threaded_irq(dev, + adc_tm5->dev_data->base[i].irq, + adctm5_gen3_isr, + adctm5_gen3_isr_thread, + irq_flags, + adc_tm5->dev_data->base[i].irq_name, + adc_tm5); + if (ret < 0) + return ret; + } + + return 0; +} + +static const struct auxiliary_device_id adctm5_auxiliary_id_table[] = { + { .name = "qcom_spmi_adc5_gen3.adc5_tm_gen3" }, + { } +}; +MODULE_DEVICE_TABLE(auxiliary, adctm5_auxiliary_id_table); + +static struct auxiliary_driver adctm5gen3_auxiliary_driver = { + .id_table = adctm5_auxiliary_id_table, + .probe = adc_tm5_probe, +}; +module_auxiliary_driver(adctm5gen3_auxiliary_driver); + +MODULE_DESCRIPTION("SPMI PMIC Thermal Monitor ADC driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("QCOM_SPMI_ADC5_GEN3"); diff --git a/drivers/thermal/qcom/qcom-spmi-adc-tm5.c b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c new file mode 100644 index 000000000..af72db629 --- /dev/null +++ b/drivers/thermal/qcom/qcom-spmi-adc-tm5.c @@ -0,0 +1,1069 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2020 Linaro Limited + * + * Based on original driver: + * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved. + * + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#include <linux/bitfield.h> +#include <linux/iio/adc/qcom-vadc-common.h> +#include <linux/iio/consumer.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/thermal.h> + +#include <linux/unaligned.h> + +#include "../thermal_hwmon.h" + +/* + * Thermal monitoring block consists of 8 (ADC_TM5_NUM_CHANNELS) channels. Each + * channel is programmed to use one of ADC channels for voltage comparison. + * Voltages are programmed using ADC codes, so we have to convert temp to + * voltage and then to ADC code value. + * + * Configuration of TM channels must match configuration of corresponding ADC + * channels. + */ + +#define ADC5_MAX_CHANNEL 0xc0 +#define ADC_TM5_NUM_CHANNELS 8 + +#define ADC_TM5_STATUS_LOW 0x0a + +#define ADC_TM5_STATUS_HIGH 0x0b + +#define ADC_TM5_NUM_BTM 0x0f + +#define ADC_TM5_ADC_DIG_PARAM 0x42 + +#define ADC_TM5_FAST_AVG_CTL (ADC_TM5_ADC_DIG_PARAM + 1) +#define ADC_TM5_FAST_AVG_EN BIT(7) + +#define ADC_TM5_MEAS_INTERVAL_CTL (ADC_TM5_ADC_DIG_PARAM + 2) +#define ADC_TM5_TIMER1 3 /* 3.9ms */ + +#define ADC_TM5_MEAS_INTERVAL_CTL2 (ADC_TM5_ADC_DIG_PARAM + 3) +#define ADC_TM5_MEAS_INTERVAL_CTL2_MASK 0xf0 +#define ADC_TM5_TIMER2 10 /* 1 second */ +#define ADC_TM5_MEAS_INTERVAL_CTL3_MASK 0xf +#define ADC_TM5_TIMER3 4 /* 4 second */ + +#define ADC_TM_EN_CTL1 0x46 +#define ADC_TM_EN BIT(7) +#define ADC_TM_CONV_REQ 0x47 +#define ADC_TM_CONV_REQ_EN BIT(7) + +#define ADC_TM5_M_CHAN_BASE 0x60 + +#define ADC_TM5_M_ADC_CH_SEL_CTL(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 0) +#define ADC_TM5_M_LOW_THR0(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 1) +#define ADC_TM5_M_LOW_THR1(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 2) +#define ADC_TM5_M_HIGH_THR0(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 3) +#define ADC_TM5_M_HIGH_THR1(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 4) +#define ADC_TM5_M_MEAS_INTERVAL_CTL(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 5) +#define ADC_TM5_M_CTL(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 6) +#define ADC_TM5_M_CTL_HW_SETTLE_DELAY_MASK 0xf +#define ADC_TM5_M_CTL_CAL_SEL_MASK 0x30 +#define ADC_TM5_M_CTL_CAL_VAL 0x40 +#define ADC_TM5_M_EN(n) (ADC_TM5_M_CHAN_BASE + ((n) * 8) + 7) +#define ADC_TM5_M_MEAS_EN BIT(7) +#define ADC_TM5_M_HIGH_THR_INT_EN BIT(1) +#define ADC_TM5_M_LOW_THR_INT_EN BIT(0) + +#define ADC_TM_GEN2_STATUS1 0x08 +#define ADC_TM_GEN2_STATUS_LOW_SET 0x09 +#define ADC_TM_GEN2_STATUS_LOW_CLR 0x0a +#define ADC_TM_GEN2_STATUS_HIGH_SET 0x0b +#define ADC_TM_GEN2_STATUS_HIGH_CLR 0x0c + +#define ADC_TM_GEN2_CFG_HS_SET 0x0d +#define ADC_TM_GEN2_CFG_HS_FLAG BIT(0) +#define ADC_TM_GEN2_CFG_HS_CLR 0x0e + +#define ADC_TM_GEN2_SID 0x40 + +#define ADC_TM_GEN2_CH_CTL 0x41 +#define ADC_TM_GEN2_TM_CH_SEL GENMASK(7, 5) +#define ADC_TM_GEN2_MEAS_INT_SEL GENMASK(3, 2) + +#define ADC_TM_GEN2_ADC_DIG_PARAM 0x42 +#define ADC_TM_GEN2_CTL_CAL_SEL GENMASK(5, 4) +#define ADC_TM_GEN2_CTL_DEC_RATIO_MASK GENMASK(3, 2) + +#define ADC_TM_GEN2_FAST_AVG_CTL 0x43 +#define ADC_TM_GEN2_FAST_AVG_EN BIT(7) + +#define ADC_TM_GEN2_ADC_CH_SEL_CTL 0x44 + +#define ADC_TM_GEN2_DELAY_CTL 0x45 +#define ADC_TM_GEN2_HW_SETTLE_DELAY GENMASK(3, 0) + +#define ADC_TM_GEN2_EN_CTL1 0x46 +#define ADC_TM_GEN2_EN BIT(7) + +#define ADC_TM_GEN2_CONV_REQ 0x47 +#define ADC_TM_GEN2_CONV_REQ_EN BIT(7) + +#define ADC_TM_GEN2_LOW_THR0 0x49 +#define ADC_TM_GEN2_LOW_THR1 0x4a +#define ADC_TM_GEN2_HIGH_THR0 0x4b +#define ADC_TM_GEN2_HIGH_THR1 0x4c +#define ADC_TM_GEN2_LOWER_MASK(n) ((n) & GENMASK(7, 0)) +#define ADC_TM_GEN2_UPPER_MASK(n) (((n) & GENMASK(15, 8)) >> 8) + +#define ADC_TM_GEN2_MEAS_IRQ_EN 0x4d +#define ADC_TM_GEN2_MEAS_EN BIT(7) +#define ADC_TM5_GEN2_HIGH_THR_INT_EN BIT(1) +#define ADC_TM5_GEN2_LOW_THR_INT_EN BIT(0) + +#define ADC_TM_GEN2_MEAS_INT_LSB 0x50 +#define ADC_TM_GEN2_MEAS_INT_MSB 0x51 +#define ADC_TM_GEN2_MEAS_INT_MODE 0x52 + +#define ADC_TM_GEN2_Mn_DATA0(n) ((n * 2) + 0xa0) +#define ADC_TM_GEN2_Mn_DATA1(n) ((n * 2) + 0xa1) +#define ADC_TM_GEN2_DATA_SHIFT 8 + +enum adc5_timer_select { + ADC5_TIMER_SEL_1 = 0, + ADC5_TIMER_SEL_2, + ADC5_TIMER_SEL_3, + ADC5_TIMER_SEL_NONE, +}; + +enum adc5_gen { + ADC_TM5, + ADC_TM_HC, + ADC_TM5_GEN2, + ADC_TM5_MAX +}; + +enum adc_tm5_cal_method { + ADC_TM5_NO_CAL = 0, + ADC_TM5_RATIOMETRIC_CAL, + ADC_TM5_ABSOLUTE_CAL +}; + +enum adc_tm_gen2_time_select { + MEAS_INT_50MS = 0, + MEAS_INT_100MS, + MEAS_INT_1S, + MEAS_INT_SET, + MEAS_INT_NONE, +}; + +struct adc_tm5_chip; +struct adc_tm5_channel; + +struct adc_tm5_data { + const u32 full_scale_code_volt; + unsigned int *decimation; + unsigned int *hw_settle; + int (*disable_channel)(struct adc_tm5_channel *channel); + int (*configure)(struct adc_tm5_channel *channel, int low, int high); + irqreturn_t (*isr)(int irq, void *data); + int (*init)(struct adc_tm5_chip *chip); + char *irq_name; + int gen; +}; + +/** + * struct adc_tm5_channel - ADC Thermal Monitoring channel data. + * @channel: channel number. + * @adc_channel: corresponding ADC channel number. + * @cal_method: calibration method. + * @prescale: channel scaling performed on the input signal. + * @hw_settle_time: the time between AMUX being configured and the + * start of conversion. + * @decimation: sampling rate supported for the channel. + * @avg_samples: ability to provide single result from the ADC + * that is an average of multiple measurements. + * @high_thr_en: channel upper voltage threshold enable state. + * @low_thr_en: channel lower voltage threshold enable state. + * @meas_en: recurring measurement enable state + * @iio: IIO channel instance used by this channel. + * @chip: ADC TM chip instance. + * @tzd: thermal zone device used by this channel. + */ +struct adc_tm5_channel { + unsigned int channel; + unsigned int adc_channel; + enum adc_tm5_cal_method cal_method; + unsigned int prescale; + unsigned int hw_settle_time; + unsigned int decimation; /* For Gen2 ADC_TM */ + unsigned int avg_samples; /* For Gen2 ADC_TM */ + bool high_thr_en; /* For Gen2 ADC_TM */ + bool low_thr_en; /* For Gen2 ADC_TM */ + bool meas_en; /* For Gen2 ADC_TM */ + struct iio_channel *iio; + struct adc_tm5_chip *chip; + struct thermal_zone_device *tzd; +}; + +/** + * struct adc_tm5_chip - ADC Thermal Monitoring properties + * @regmap: SPMI ADC5 Thermal Monitoring peripheral register map field. + * @dev: SPMI ADC5 device. + * @data: software configuration data. + * @channels: array of ADC TM channel data. + * @nchannels: amount of channels defined/allocated + * @decimation: sampling rate supported for the channel. + * Applies to all channels, used only on Gen1 ADC_TM. + * @avg_samples: ability to provide single result from the ADC + * that is an average of multiple measurements. Applies to all + * channels, used only on Gen1 ADC_TM. + * @base: base address of TM registers. + * @adc_mutex_lock: ADC_TM mutex lock, used only on Gen2 ADC_TM. + * It is used to ensure only one ADC channel configuration + * is done at a time using the shared set of configuration + * registers. + */ +struct adc_tm5_chip { + struct regmap *regmap; + struct device *dev; + const struct adc_tm5_data *data; + struct adc_tm5_channel *channels; + unsigned int nchannels; + unsigned int decimation; + unsigned int avg_samples; + u16 base; + struct mutex adc_mutex_lock; +}; + +static int adc_tm5_read(struct adc_tm5_chip *adc_tm, u16 offset, u8 *data, int len) +{ + return regmap_bulk_read(adc_tm->regmap, adc_tm->base + offset, data, len); +} + +static int adc_tm5_write(struct adc_tm5_chip *adc_tm, u16 offset, u8 *data, int len) +{ + return regmap_bulk_write(adc_tm->regmap, adc_tm->base + offset, data, len); +} + +static int adc_tm5_reg_update(struct adc_tm5_chip *adc_tm, u16 offset, u8 mask, u8 val) +{ + return regmap_write_bits(adc_tm->regmap, adc_tm->base + offset, mask, val); +} + +static irqreturn_t adc_tm5_isr(int irq, void *data) +{ + struct adc_tm5_chip *chip = data; + u8 status_low, status_high, ctl; + int ret, i; + + ret = adc_tm5_read(chip, ADC_TM5_STATUS_LOW, &status_low, sizeof(status_low)); + if (unlikely(ret)) { + dev_err(chip->dev, "read status low failed: %d\n", ret); + return IRQ_HANDLED; + } + + ret = adc_tm5_read(chip, ADC_TM5_STATUS_HIGH, &status_high, sizeof(status_high)); + if (unlikely(ret)) { + dev_err(chip->dev, "read status high failed: %d\n", ret); + return IRQ_HANDLED; + } + + for (i = 0; i < chip->nchannels; i++) { + bool upper_set = false, lower_set = false; + unsigned int ch = chip->channels[i].channel; + + /* No TZD, we warned at the boot time */ + if (!chip->channels[i].tzd) + continue; + + ret = adc_tm5_read(chip, ADC_TM5_M_EN(ch), &ctl, sizeof(ctl)); + if (unlikely(ret)) { + dev_err(chip->dev, "ctl read failed: %d, channel %d\n", ret, i); + continue; + } + + if (!(ctl & ADC_TM5_M_MEAS_EN)) + continue; + + lower_set = (status_low & BIT(ch)) && + (ctl & ADC_TM5_M_LOW_THR_INT_EN); + + upper_set = (status_high & BIT(ch)) && + (ctl & ADC_TM5_M_HIGH_THR_INT_EN); + + if (upper_set || lower_set) + thermal_zone_device_update(chip->channels[i].tzd, + THERMAL_EVENT_UNSPECIFIED); + } + + return IRQ_HANDLED; +} + +static irqreturn_t adc_tm5_gen2_isr(int irq, void *data) +{ + struct adc_tm5_chip *chip = data; + u8 status_low, status_high; + int ret, i; + + ret = adc_tm5_read(chip, ADC_TM_GEN2_STATUS_LOW_CLR, &status_low, sizeof(status_low)); + if (ret) { + dev_err(chip->dev, "read status_low failed: %d\n", ret); + return IRQ_HANDLED; + } + + ret = adc_tm5_read(chip, ADC_TM_GEN2_STATUS_HIGH_CLR, &status_high, sizeof(status_high)); + if (ret) { + dev_err(chip->dev, "read status_high failed: %d\n", ret); + return IRQ_HANDLED; + } + + ret = adc_tm5_write(chip, ADC_TM_GEN2_STATUS_LOW_CLR, &status_low, sizeof(status_low)); + if (ret < 0) { + dev_err(chip->dev, "clear status low failed with %d\n", ret); + return IRQ_HANDLED; + } + + ret = adc_tm5_write(chip, ADC_TM_GEN2_STATUS_HIGH_CLR, &status_high, sizeof(status_high)); + if (ret < 0) { + dev_err(chip->dev, "clear status high failed with %d\n", ret); + return IRQ_HANDLED; + } + + for (i = 0; i < chip->nchannels; i++) { + bool upper_set = false, lower_set = false; + unsigned int ch = chip->channels[i].channel; + + /* No TZD, we warned at the boot time */ + if (!chip->channels[i].tzd) + continue; + + if (!chip->channels[i].meas_en) + continue; + + lower_set = (status_low & BIT(ch)) && + (chip->channels[i].low_thr_en); + + upper_set = (status_high & BIT(ch)) && + (chip->channels[i].high_thr_en); + + if (upper_set || lower_set) + thermal_zone_device_update(chip->channels[i].tzd, + THERMAL_EVENT_UNSPECIFIED); + } + + return IRQ_HANDLED; +} + +static int adc_tm5_get_temp(struct thermal_zone_device *tz, int *temp) +{ + struct adc_tm5_channel *channel = thermal_zone_device_priv(tz); + int ret; + + if (!channel || !channel->iio) + return -EINVAL; + + ret = iio_read_channel_processed(channel->iio, temp); + if (ret < 0) + return ret; + + return 0; +} + +static int adc_tm5_disable_channel(struct adc_tm5_channel *channel) +{ + struct adc_tm5_chip *chip = channel->chip; + unsigned int reg = ADC_TM5_M_EN(channel->channel); + + return adc_tm5_reg_update(chip, reg, + ADC_TM5_M_MEAS_EN | + ADC_TM5_M_HIGH_THR_INT_EN | + ADC_TM5_M_LOW_THR_INT_EN, + 0); +} + +#define ADC_TM_GEN2_POLL_DELAY_MIN_US 100 +#define ADC_TM_GEN2_POLL_DELAY_MAX_US 110 +#define ADC_TM_GEN2_POLL_RETRY_COUNT 3 + +static int32_t adc_tm5_gen2_conv_req(struct adc_tm5_chip *chip) +{ + int ret; + u8 data; + unsigned int count; + + data = ADC_TM_GEN2_EN; + ret = adc_tm5_write(chip, ADC_TM_GEN2_EN_CTL1, &data, 1); + if (ret < 0) { + dev_err(chip->dev, "adc-tm enable failed with %d\n", ret); + return ret; + } + + data = ADC_TM_GEN2_CFG_HS_FLAG; + ret = adc_tm5_write(chip, ADC_TM_GEN2_CFG_HS_SET, &data, 1); + if (ret < 0) { + dev_err(chip->dev, "adc-tm handshake failed with %d\n", ret); + return ret; + } + + data = ADC_TM_GEN2_CONV_REQ_EN; + ret = adc_tm5_write(chip, ADC_TM_GEN2_CONV_REQ, &data, 1); + if (ret < 0) { + dev_err(chip->dev, "adc-tm request conversion failed with %d\n", ret); + return ret; + } + + /* + * SW sets a handshake bit and waits for PBS to clear it + * before the next conversion request can be queued. + */ + + for (count = 0; count < ADC_TM_GEN2_POLL_RETRY_COUNT; count++) { + ret = adc_tm5_read(chip, ADC_TM_GEN2_CFG_HS_SET, &data, sizeof(data)); + if (ret < 0) { + dev_err(chip->dev, "adc-tm read failed with %d\n", ret); + return ret; + } + + if (!(data & ADC_TM_GEN2_CFG_HS_FLAG)) + return ret; + usleep_range(ADC_TM_GEN2_POLL_DELAY_MIN_US, + ADC_TM_GEN2_POLL_DELAY_MAX_US); + } + + dev_err(chip->dev, "adc-tm conversion request handshake timed out\n"); + + return -ETIMEDOUT; +} + +static int adc_tm5_gen2_disable_channel(struct adc_tm5_channel *channel) +{ + struct adc_tm5_chip *chip = channel->chip; + int ret; + u8 val; + + mutex_lock(&chip->adc_mutex_lock); + + channel->meas_en = false; + channel->high_thr_en = false; + channel->low_thr_en = false; + + ret = adc_tm5_read(chip, ADC_TM_GEN2_CH_CTL, &val, sizeof(val)); + if (ret < 0) { + dev_err(chip->dev, "adc-tm block read failed with %d\n", ret); + goto disable_fail; + } + + val &= ~ADC_TM_GEN2_TM_CH_SEL; + val |= FIELD_PREP(ADC_TM_GEN2_TM_CH_SEL, channel->channel); + + ret = adc_tm5_write(chip, ADC_TM_GEN2_CH_CTL, &val, 1); + if (ret < 0) { + dev_err(chip->dev, "adc-tm channel disable failed with %d\n", ret); + goto disable_fail; + } + + val = 0; + ret = adc_tm5_write(chip, ADC_TM_GEN2_MEAS_IRQ_EN, &val, 1); + if (ret < 0) { + dev_err(chip->dev, "adc-tm interrupt disable failed with %d\n", ret); + goto disable_fail; + } + + + ret = adc_tm5_gen2_conv_req(channel->chip); + if (ret < 0) + dev_err(chip->dev, "adc-tm channel configure failed with %d\n", ret); + +disable_fail: + mutex_unlock(&chip->adc_mutex_lock); + return ret; +} + +static int adc_tm5_enable(struct adc_tm5_chip *chip) +{ + int ret; + u8 data; + + data = ADC_TM_EN; + ret = adc_tm5_write(chip, ADC_TM_EN_CTL1, &data, sizeof(data)); + if (ret < 0) { + dev_err(chip->dev, "adc-tm enable failed\n"); + return ret; + } + + data = ADC_TM_CONV_REQ_EN; + ret = adc_tm5_write(chip, ADC_TM_CONV_REQ, &data, sizeof(data)); + if (ret < 0) { + dev_err(chip->dev, "adc-tm request conversion failed\n"); + return ret; + } + + return 0; +} + +static int adc_tm5_configure(struct adc_tm5_channel *channel, int low, int high) +{ + struct adc_tm5_chip *chip = channel->chip; + u8 buf[8]; + u16 reg = ADC_TM5_M_ADC_CH_SEL_CTL(channel->channel); + int ret; + + ret = adc_tm5_read(chip, reg, buf, sizeof(buf)); + if (ret) { + dev_err(chip->dev, "channel %d params read failed: %d\n", channel->channel, ret); + return ret; + } + + buf[0] = channel->adc_channel; + + /* High temperature corresponds to low voltage threshold */ + if (high != INT_MAX) { + u16 adc_code = qcom_adc_tm5_temp_volt_scale(channel->prescale, + chip->data->full_scale_code_volt, high); + + put_unaligned_le16(adc_code, &buf[1]); + buf[7] |= ADC_TM5_M_LOW_THR_INT_EN; + } else { + buf[7] &= ~ADC_TM5_M_LOW_THR_INT_EN; + } + + /* Low temperature corresponds to high voltage threshold */ + if (low != -INT_MAX) { + u16 adc_code = qcom_adc_tm5_temp_volt_scale(channel->prescale, + chip->data->full_scale_code_volt, low); + + put_unaligned_le16(adc_code, &buf[3]); + buf[7] |= ADC_TM5_M_HIGH_THR_INT_EN; + } else { + buf[7] &= ~ADC_TM5_M_HIGH_THR_INT_EN; + } + + buf[5] = ADC5_TIMER_SEL_2; + + /* Set calibration select, hw_settle delay */ + buf[6] &= ~ADC_TM5_M_CTL_HW_SETTLE_DELAY_MASK; + buf[6] |= FIELD_PREP(ADC_TM5_M_CTL_HW_SETTLE_DELAY_MASK, channel->hw_settle_time); + buf[6] &= ~ADC_TM5_M_CTL_CAL_SEL_MASK; + buf[6] |= FIELD_PREP(ADC_TM5_M_CTL_CAL_SEL_MASK, channel->cal_method); + + buf[7] |= ADC_TM5_M_MEAS_EN; + + ret = adc_tm5_write(chip, reg, buf, sizeof(buf)); + if (ret) { + dev_err(chip->dev, "channel %d params write failed: %d\n", channel->channel, ret); + return ret; + } + + return adc_tm5_enable(chip); +} + +static int adc_tm5_gen2_configure(struct adc_tm5_channel *channel, int low, int high) +{ + struct adc_tm5_chip *chip = channel->chip; + int ret; + u8 buf[14]; + u16 adc_code; + + mutex_lock(&chip->adc_mutex_lock); + + channel->meas_en = true; + + ret = adc_tm5_read(chip, ADC_TM_GEN2_SID, buf, sizeof(buf)); + if (ret < 0) { + dev_err(chip->dev, "adc-tm block read failed with %d\n", ret); + goto config_fail; + } + + /* Set SID from virtual channel number */ + buf[0] = channel->adc_channel >> 8; + + /* Set TM channel number used and measurement interval */ + buf[1] &= ~ADC_TM_GEN2_TM_CH_SEL; + buf[1] |= FIELD_PREP(ADC_TM_GEN2_TM_CH_SEL, channel->channel); + buf[1] &= ~ADC_TM_GEN2_MEAS_INT_SEL; + buf[1] |= FIELD_PREP(ADC_TM_GEN2_MEAS_INT_SEL, MEAS_INT_1S); + + buf[2] &= ~ADC_TM_GEN2_CTL_DEC_RATIO_MASK; + buf[2] |= FIELD_PREP(ADC_TM_GEN2_CTL_DEC_RATIO_MASK, channel->decimation); + buf[2] &= ~ADC_TM_GEN2_CTL_CAL_SEL; + buf[2] |= FIELD_PREP(ADC_TM_GEN2_CTL_CAL_SEL, channel->cal_method); + + buf[3] = channel->avg_samples | ADC_TM_GEN2_FAST_AVG_EN; + + buf[4] = channel->adc_channel & 0xff; + + buf[5] = channel->hw_settle_time & ADC_TM_GEN2_HW_SETTLE_DELAY; + + /* High temperature corresponds to low voltage threshold */ + if (high != INT_MAX) { + channel->low_thr_en = true; + adc_code = qcom_adc_tm5_gen2_temp_res_scale(high); + put_unaligned_le16(adc_code, &buf[9]); + } else { + channel->low_thr_en = false; + } + + /* Low temperature corresponds to high voltage threshold */ + if (low != -INT_MAX) { + channel->high_thr_en = true; + adc_code = qcom_adc_tm5_gen2_temp_res_scale(low); + put_unaligned_le16(adc_code, &buf[11]); + } else { + channel->high_thr_en = false; + } + + buf[13] = ADC_TM_GEN2_MEAS_EN; + if (channel->high_thr_en) + buf[13] |= ADC_TM5_GEN2_HIGH_THR_INT_EN; + if (channel->low_thr_en) + buf[13] |= ADC_TM5_GEN2_LOW_THR_INT_EN; + + ret = adc_tm5_write(chip, ADC_TM_GEN2_SID, buf, sizeof(buf)); + if (ret) { + dev_err(chip->dev, "channel %d params write failed: %d\n", channel->channel, ret); + goto config_fail; + } + + ret = adc_tm5_gen2_conv_req(channel->chip); + if (ret < 0) + dev_err(chip->dev, "adc-tm channel configure failed with %d\n", ret); + +config_fail: + mutex_unlock(&chip->adc_mutex_lock); + return ret; +} + +static int adc_tm5_set_trips(struct thermal_zone_device *tz, int low, int high) +{ + struct adc_tm5_channel *channel = thermal_zone_device_priv(tz); + struct adc_tm5_chip *chip; + int ret; + + if (!channel) + return -EINVAL; + + chip = channel->chip; + dev_dbg(chip->dev, "%d:low(mdegC):%d, high(mdegC):%d\n", + channel->channel, low, high); + + if (high == INT_MAX && low <= -INT_MAX) + ret = chip->data->disable_channel(channel); + else + ret = chip->data->configure(channel, low, high); + + return ret; +} + +static const struct thermal_zone_device_ops adc_tm5_thermal_ops = { + .get_temp = adc_tm5_get_temp, + .set_trips = adc_tm5_set_trips, +}; + +static int adc_tm5_register_tzd(struct adc_tm5_chip *adc_tm) +{ + unsigned int i; + struct thermal_zone_device *tzd; + + for (i = 0; i < adc_tm->nchannels; i++) { + adc_tm->channels[i].chip = adc_tm; + tzd = devm_thermal_of_zone_register(adc_tm->dev, + adc_tm->channels[i].channel, + &adc_tm->channels[i], + &adc_tm5_thermal_ops); + if (IS_ERR(tzd)) { + if (PTR_ERR(tzd) == -ENODEV) { + dev_dbg(adc_tm->dev, "thermal sensor on channel %d is not used\n", + adc_tm->channels[i].channel); + continue; + } + + dev_err(adc_tm->dev, "Error registering TZ zone for channel %d: %ld\n", + adc_tm->channels[i].channel, PTR_ERR(tzd)); + return PTR_ERR(tzd); + } + adc_tm->channels[i].tzd = tzd; + devm_thermal_add_hwmon_sysfs(adc_tm->dev, tzd); + } + + return 0; +} + +static int adc_tm_hc_init(struct adc_tm5_chip *chip) +{ + unsigned int i; + u8 buf[2]; + int ret; + + for (i = 0; i < chip->nchannels; i++) { + if (chip->channels[i].channel >= ADC_TM5_NUM_CHANNELS) { + dev_err(chip->dev, "Invalid channel %d\n", chip->channels[i].channel); + return -EINVAL; + } + } + + buf[0] = chip->decimation; + buf[1] = chip->avg_samples | ADC_TM5_FAST_AVG_EN; + + ret = adc_tm5_write(chip, ADC_TM5_ADC_DIG_PARAM, buf, sizeof(buf)); + if (ret) + dev_err(chip->dev, "block write failed: %d\n", ret); + + return ret; +} + +static int adc_tm5_init(struct adc_tm5_chip *chip) +{ + u8 buf[4], channels_available; + int ret; + unsigned int i; + + ret = adc_tm5_read(chip, ADC_TM5_NUM_BTM, + &channels_available, sizeof(channels_available)); + if (ret) { + dev_err(chip->dev, "read failed for BTM channels\n"); + return ret; + } + + for (i = 0; i < chip->nchannels; i++) { + if (chip->channels[i].channel >= channels_available) { + dev_err(chip->dev, "Invalid channel %d\n", chip->channels[i].channel); + return -EINVAL; + } + } + + buf[0] = chip->decimation; + buf[1] = chip->avg_samples | ADC_TM5_FAST_AVG_EN; + buf[2] = ADC_TM5_TIMER1; + buf[3] = FIELD_PREP(ADC_TM5_MEAS_INTERVAL_CTL2_MASK, ADC_TM5_TIMER2) | + FIELD_PREP(ADC_TM5_MEAS_INTERVAL_CTL3_MASK, ADC_TM5_TIMER3); + + ret = adc_tm5_write(chip, ADC_TM5_ADC_DIG_PARAM, buf, sizeof(buf)); + if (ret) { + dev_err(chip->dev, "block write failed: %d\n", ret); + return ret; + } + + return ret; +} + +static int adc_tm5_gen2_init(struct adc_tm5_chip *chip) +{ + u8 channels_available; + int ret; + unsigned int i; + + ret = adc_tm5_read(chip, ADC_TM5_NUM_BTM, + &channels_available, sizeof(channels_available)); + if (ret) { + dev_err(chip->dev, "read failed for BTM channels\n"); + return ret; + } + + for (i = 0; i < chip->nchannels; i++) { + if (chip->channels[i].channel >= channels_available) { + dev_err(chip->dev, "Invalid channel %d\n", chip->channels[i].channel); + return -EINVAL; + } + } + + mutex_init(&chip->adc_mutex_lock); + + return ret; +} + +static int adc_tm5_get_dt_channel_data(struct adc_tm5_chip *adc_tm, + struct adc_tm5_channel *channel, + struct device_node *node) +{ + const char *name = node->name; + u32 chan, value, adc_channel, varr[2]; + int ret; + struct device *dev = adc_tm->dev; + struct of_phandle_args args; + + ret = of_property_read_u32(node, "reg", &chan); + if (ret) { + dev_err(dev, "%s: invalid channel number %d\n", name, ret); + return ret; + } + + if (chan >= ADC_TM5_NUM_CHANNELS) { + dev_err(dev, "%s: channel number too big: %d\n", name, chan); + return -EINVAL; + } + + channel->channel = chan; + + /* + * We are tied to PMIC's ADC controller, which always use single + * argument for channel number. So don't bother parsing + * #io-channel-cells, just enforce cell_count = 1. + */ + ret = of_parse_phandle_with_fixed_args(node, "io-channels", 1, 0, &args); + if (ret < 0) { + dev_err(dev, "%s: error parsing ADC channel number %d: %d\n", name, chan, ret); + return ret; + } + of_node_put(args.np); + + if (args.args_count != 1) { + dev_err(dev, "%s: invalid args count for ADC channel %d\n", name, chan); + return -EINVAL; + } + + adc_channel = args.args[0]; + if (adc_tm->data->gen == ADC_TM5_GEN2) + adc_channel &= 0xff; + + if (adc_channel >= ADC5_MAX_CHANNEL) { + dev_err(dev, "%s: invalid ADC channel number %d\n", name, chan); + return -EINVAL; + } + channel->adc_channel = args.args[0]; + + channel->iio = devm_fwnode_iio_channel_get_by_name(adc_tm->dev, + of_fwnode_handle(node), NULL); + if (IS_ERR(channel->iio)) + return dev_err_probe(dev, PTR_ERR(channel->iio), "%s: error getting channel\n", + name); + + ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2); + if (!ret) { + ret = qcom_adc5_prescaling_from_dt(varr[0], varr[1]); + if (ret < 0) { + dev_err(dev, "%s: invalid pre-scaling <%d %d>\n", + name, varr[0], varr[1]); + return ret; + } + channel->prescale = ret; + } else { + /* 1:1 prescale is index 0 */ + channel->prescale = 0; + } + + ret = of_property_read_u32(node, "qcom,hw-settle-time-us", &value); + if (!ret) { + ret = qcom_adc5_hw_settle_time_from_dt(value, adc_tm->data->hw_settle); + if (ret < 0) { + dev_err(dev, "%s invalid hw-settle-time-us %d us\n", + name, value); + return ret; + } + channel->hw_settle_time = ret; + } else { + channel->hw_settle_time = VADC_DEF_HW_SETTLE_TIME; + } + + if (of_property_read_bool(node, "qcom,ratiometric")) + channel->cal_method = ADC_TM5_RATIOMETRIC_CAL; + else + channel->cal_method = ADC_TM5_ABSOLUTE_CAL; + + if (adc_tm->data->gen == ADC_TM5_GEN2) { + ret = of_property_read_u32(node, "qcom,decimation", &value); + if (!ret) { + ret = qcom_adc5_decimation_from_dt(value, adc_tm->data->decimation); + if (ret < 0) { + dev_err(dev, "invalid decimation %d\n", value); + return ret; + } + channel->decimation = ret; + } else { + channel->decimation = ADC5_DECIMATION_DEFAULT; + } + + ret = of_property_read_u32(node, "qcom,avg-samples", &value); + if (!ret) { + ret = qcom_adc5_avg_samples_from_dt(value); + if (ret < 0) { + dev_err(dev, "invalid avg-samples %d\n", value); + return ret; + } + channel->avg_samples = ret; + } else { + channel->avg_samples = VADC_DEF_AVG_SAMPLES; + } + } + + return 0; +} + +static const struct adc_tm5_data adc_tm5_data_pmic = { + .full_scale_code_volt = 0x70e4, + .decimation = (unsigned int []) { 250, 420, 840 }, + .hw_settle = (unsigned int []) { 15, 100, 200, 300, 400, 500, 600, 700, + 1000, 2000, 4000, 8000, 16000, 32000, + 64000, 128000 }, + .disable_channel = adc_tm5_disable_channel, + .configure = adc_tm5_configure, + .isr = adc_tm5_isr, + .init = adc_tm5_init, + .irq_name = "pm-adc-tm5", + .gen = ADC_TM5, +}; + +static const struct adc_tm5_data adc_tm_hc_data_pmic = { + .full_scale_code_volt = 0x70e4, + .decimation = (unsigned int []) { 256, 512, 1024 }, + .hw_settle = (unsigned int []) { 0, 100, 200, 300, 400, 500, 600, 700, + 1000, 2000, 4000, 6000, 8000, 10000 }, + .disable_channel = adc_tm5_disable_channel, + .configure = adc_tm5_configure, + .isr = adc_tm5_isr, + .init = adc_tm_hc_init, + .irq_name = "pm-adc-tm5", + .gen = ADC_TM_HC, +}; + +static const struct adc_tm5_data adc_tm5_gen2_data_pmic = { + .full_scale_code_volt = 0x70e4, + .decimation = (unsigned int []) { 85, 340, 1360 }, + .hw_settle = (unsigned int []) { 15, 100, 200, 300, 400, 500, 600, 700, + 1000, 2000, 4000, 8000, 16000, 32000, + 64000, 128000 }, + .disable_channel = adc_tm5_gen2_disable_channel, + .configure = adc_tm5_gen2_configure, + .isr = adc_tm5_gen2_isr, + .init = adc_tm5_gen2_init, + .irq_name = "pm-adc-tm5-gen2", + .gen = ADC_TM5_GEN2, +}; + +static int adc_tm5_get_dt_data(struct adc_tm5_chip *adc_tm, struct device_node *node) +{ + struct adc_tm5_channel *channels; + u32 value; + int ret; + struct device *dev = adc_tm->dev; + + adc_tm->nchannels = of_get_available_child_count(node); + if (!adc_tm->nchannels) + return -EINVAL; + + adc_tm->channels = devm_kcalloc(dev, adc_tm->nchannels, + sizeof(*adc_tm->channels), GFP_KERNEL); + if (!adc_tm->channels) + return -ENOMEM; + + channels = adc_tm->channels; + + adc_tm->data = of_device_get_match_data(dev); + if (!adc_tm->data) + adc_tm->data = &adc_tm5_data_pmic; + + ret = of_property_read_u32(node, "qcom,decimation", &value); + if (!ret) { + ret = qcom_adc5_decimation_from_dt(value, adc_tm->data->decimation); + if (ret < 0) { + dev_err(dev, "invalid decimation %d\n", value); + return ret; + } + adc_tm->decimation = ret; + } else { + adc_tm->decimation = ADC5_DECIMATION_DEFAULT; + } + + ret = of_property_read_u32(node, "qcom,avg-samples", &value); + if (!ret) { + ret = qcom_adc5_avg_samples_from_dt(value); + if (ret < 0) { + dev_err(dev, "invalid avg-samples %d\n", value); + return ret; + } + adc_tm->avg_samples = ret; + } else { + adc_tm->avg_samples = VADC_DEF_AVG_SAMPLES; + } + + for_each_available_child_of_node_scoped(node, child) { + ret = adc_tm5_get_dt_channel_data(adc_tm, channels, child); + if (ret) + return ret; + + channels++; + } + + return 0; +} + +static int adc_tm5_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct device *dev = &pdev->dev; + struct adc_tm5_chip *adc_tm; + struct regmap *regmap; + int ret, irq; + u32 reg; + + regmap = dev_get_regmap(dev->parent, NULL); + if (!regmap) + return -ENODEV; + + ret = of_property_read_u32(node, "reg", ®); + if (ret) + return ret; + + adc_tm = devm_kzalloc(&pdev->dev, sizeof(*adc_tm), GFP_KERNEL); + if (!adc_tm) + return -ENOMEM; + + adc_tm->regmap = regmap; + adc_tm->dev = dev; + adc_tm->base = reg; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + ret = adc_tm5_get_dt_data(adc_tm, node); + if (ret) + return dev_err_probe(dev, ret, "get dt data failed\n"); + + ret = adc_tm->data->init(adc_tm); + if (ret) { + dev_err(dev, "adc-tm init failed\n"); + return ret; + } + + ret = adc_tm5_register_tzd(adc_tm); + if (ret) { + dev_err(dev, "tzd register failed\n"); + return ret; + } + + return devm_request_threaded_irq(dev, irq, NULL, adc_tm->data->isr, + IRQF_ONESHOT, adc_tm->data->irq_name, adc_tm); +} + +static const struct of_device_id adc_tm5_match_table[] = { + { + .compatible = "qcom,spmi-adc-tm5", + .data = &adc_tm5_data_pmic, + }, + { + .compatible = "qcom,spmi-adc-tm-hc", + .data = &adc_tm_hc_data_pmic, + }, + { + .compatible = "qcom,spmi-adc-tm5-gen2", + .data = &adc_tm5_gen2_data_pmic, + }, + { } +}; +MODULE_DEVICE_TABLE(of, adc_tm5_match_table); + +static struct platform_driver adc_tm5_driver = { + .driver = { + .name = "qcom-spmi-adc-tm5", + .of_match_table = adc_tm5_match_table, + }, + .probe = adc_tm5_probe, +}; +module_platform_driver(adc_tm5_driver); + +MODULE_DESCRIPTION("SPMI PMIC Thermal Monitor ADC driver"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS("IIO_CONSUMER"); diff --git a/drivers/thermal/qcom/qcom-spmi-mbg-tm.c b/drivers/thermal/qcom/qcom-spmi-mbg-tm.c new file mode 100644 index 000000000..a05bb4446 --- /dev/null +++ b/drivers/thermal/qcom/qcom-spmi-mbg-tm.c @@ -0,0 +1,257 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ +#include <linux/bitfield.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/thermal.h> +#include <linux/iio/consumer.h> + +#define MBG_TEMP_MON2_FAULT_STATUS 0x50 + +#define MON_FAULT_STATUS_MASK GENMASK(7, 4) +#define MON_FAULT_LVL1_UPR 0x5 + +#define MON2_LVL1_UP_THRESH 0x59 + +#define MBG_TEMP_MON2_MISC_CFG 0x5f +#define MON2_UP_THRESH_EN BIT(1) + +#define MBG_TEMP_STEP_MV 8 +#define MBG_TEMP_DEFAULT_TEMP_MV 600 +#define MBG_TEMP_CONSTANT 1000 +#define MBG_MIN_TRIP_TEMP 25000 +#define MBG_MAX_SUPPORTED_TEMP 160000 + +/** + * struct mbg_tm_chip - MBG thermal monitor device data. + * @map: regmap for accessing MBG thermal registers. + * @dev: mbg_tm_chip device. + * @tz_dev: thermal zone device registered with the thermal framework. + * @lock: mbg_tm_chip lock for set trip temperature. + * @base: base register offset for this MBG instance + * @irq: interrupt line used to signal threshold events + * @last_temp: last measured temperature. + * @last_thres_crossed: indicates whether the last interrupt crossed a threshold + * @adc: IIO ADC channel used for temperature sensing + */ +struct mbg_tm_chip { + struct regmap *map; + struct device *dev; + struct thermal_zone_device *tz_dev; + struct mutex lock; + unsigned int base; + int irq; + int last_temp; + bool last_thres_crossed; + struct iio_channel *adc; +}; + +/** + * struct mbg_map_table - temperature to voltage mapping entry + * @min_temp: minimum temperature supported by this mapping entry + * @vtemp0: reference voltage or ADC code corresponding to the temperature + * @tc: temperature coefficient used for conversion calculations + */ +struct mbg_map_table { + int min_temp; + int vtemp0; + int tc; +}; + +static const struct mbg_map_table map_table[] = { + { -60000, 4337, 1967 }, + { -40000, 4731, 1964 }, + { -20000, 5124, 1957 }, + { 0, 5515, 1949 }, + { 20000, 5905, 1940 }, + { 40000, 6293, 1930 }, + { 60000, 6679, 1921 }, + { 80000, 7064, 1910 }, + { 100000, 7446, 1896 }, + { 120000, 7825, 1878 }, + { 140000, 8201, 1859 }, +}; + +static int mbg_tm_get_temp(struct thermal_zone_device *tz, int *temp) +{ + struct mbg_tm_chip *chip = thermal_zone_device_priv(tz); + int ret, milli_celsius; + + scoped_guard(mutex, &chip->lock) { + if (chip->last_thres_crossed) { + dev_dbg(chip->dev, "last_temp: %d\n", chip->last_temp); + chip->last_thres_crossed = false; + *temp = chip->last_temp; + return 0; + } + } + + ret = iio_read_channel_processed(chip->adc, &milli_celsius); + if (ret < 0) { + dev_err(chip->dev, "Failed to read iio channel with %d\n", ret); + return ret; + } + + *temp = milli_celsius; + + return 0; +} + +static int temp_to_vtemp_mv(int temp) +{ + int idx, vtemp, tc = 0, t0 = 0, vtemp0 = 0; + + for (idx = 0; idx < ARRAY_SIZE(map_table); idx++) + if (temp >= map_table[idx].min_temp && + temp < (map_table[idx].min_temp + 20000)) { + tc = map_table[idx].tc; + t0 = map_table[idx].min_temp; + vtemp0 = map_table[idx].vtemp0; + break; + } + + /* + * Formula to calculate vtemp(mV) from a given temp + * vtemp = (temp - minT) * tc + vtemp0 + * tc, t0 and vtemp0 values are mentioned in the map_table array. + */ + vtemp = ((temp - t0) * tc + vtemp0 * 100000) / 1000000; + + /* step size is 8mV */ + return abs(vtemp - MBG_TEMP_DEFAULT_TEMP_MV) / MBG_TEMP_STEP_MV; +} + +static int mbg_tm_set_trip_temp(struct thermal_zone_device *tz, int low_temp, + int temp) +{ + struct mbg_tm_chip *chip = thermal_zone_device_priv(tz); + int ret = 0; + + guard(mutex)(&chip->lock); + + /* The HW has a limitation that the trip set must be above 25C */ + if (temp > MBG_MIN_TRIP_TEMP && temp < MBG_MAX_SUPPORTED_TEMP) { + ret = regmap_write(chip->map, chip->base + MON2_LVL1_UP_THRESH, + temp_to_vtemp_mv(temp)); + if (ret < 0) + return ret; + + ret = regmap_set_bits(chip->map, chip->base + MBG_TEMP_MON2_MISC_CFG, + MON2_UP_THRESH_EN); + if (ret < 0) + return ret; + } else { + dev_err(chip->dev, "Set trip b/w 25C and 160C\n"); + ret = regmap_clear_bits(chip->map, chip->base + MBG_TEMP_MON2_MISC_CFG, + MON2_UP_THRESH_EN); + return -ERANGE; + } + + /* + * Configure the last_temp one degree higher, to ensure the + * violated temp is returned to thermal framework when it reads + * temperature for the first time after the violation happens. + * This is needed to account for the inaccuracy in the conversion + * formula used which leads to the thermal framework setting back + * the same thresholds in case the temperature it reads does not + * show violation. + */ + chip->last_temp = temp + MBG_TEMP_CONSTANT; + + return ret; +} + +static const struct thermal_zone_device_ops mbg_tm_ops = { + .get_temp = mbg_tm_get_temp, + .set_trips = mbg_tm_set_trip_temp, +}; + +static irqreturn_t mbg_tm_isr(int irq, void *data) +{ + struct mbg_tm_chip *chip = data; + int ret, val; + + scoped_guard(mutex, &chip->lock) { + ret = regmap_read(chip->map, chip->base + MBG_TEMP_MON2_FAULT_STATUS, &val); + if (ret < 0) + return IRQ_HANDLED; + if (FIELD_GET(MON_FAULT_STATUS_MASK, val) == MON_FAULT_LVL1_UPR) + chip->last_thres_crossed = true; + } + + if (FIELD_GET(MON_FAULT_STATUS_MASK, val) == MON_FAULT_LVL1_UPR) { + dev_dbg(chip->dev, "Notifying Thermal, fault status=%d\n", val); + thermal_zone_device_update(chip->tz_dev, THERMAL_TRIP_VIOLATED); + } else { + dev_dbg(chip->dev, "Lvl1 upper threshold not violated, ignoring interrupt\n"); + } + + return IRQ_HANDLED; +} + +static int mbg_tm_probe(struct platform_device *pdev) +{ + struct mbg_tm_chip *chip; + struct device_node *node = pdev->dev.of_node; + u32 res; + int ret; + + chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->dev = &pdev->dev; + + mutex_init(&chip->lock); + + chip->map = dev_get_regmap(pdev->dev.parent, NULL); + if (!chip->map) + return -ENXIO; + + ret = device_property_read_u32(chip->dev, "reg", &res); + if (ret < 0) + return dev_err_probe(chip->dev, ret, "Couldn't read reg property\n"); + + chip->base = res; + + chip->irq = platform_get_irq(pdev, 0); + if (chip->irq < 0) + return dev_err_probe(chip->dev, chip->irq, "Failed to get irq\n"); + + chip->adc = devm_iio_channel_get(&pdev->dev, "thermal"); + if (IS_ERR(chip->adc)) + return dev_err_probe(chip->dev, PTR_ERR(chip->adc), "Failed to get adc channel\n"); + + chip->tz_dev = devm_thermal_of_zone_register(chip->dev, 0, chip, &mbg_tm_ops); + if (IS_ERR(chip->tz_dev)) + return dev_err_probe(chip->dev, PTR_ERR(chip->tz_dev), + "Failed to register sensor\n"); + + return devm_request_threaded_irq(&pdev->dev, chip->irq, NULL, mbg_tm_isr, IRQF_ONESHOT, + node->name, chip); +} + +static const struct of_device_id mbg_tm_match_table[] = { + { .compatible = "qcom,pm8775-mbg-tm" }, + { } +}; +MODULE_DEVICE_TABLE(of, mbg_tm_match_table); + +static struct platform_driver mbg_tm_driver = { + .driver = { + .name = "qcom-spmi-mbg-tm", + .of_match_table = mbg_tm_match_table, + }, + .probe = mbg_tm_probe, +}; +module_platform_driver(mbg_tm_driver); + +MODULE_DESCRIPTION("PMIC MBG Temperature monitor driver"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("IIO_CONSUMER"); diff --git a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c new file mode 100644 index 000000000..fb003ca96 --- /dev/null +++ b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c @@ -0,0 +1,907 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2011-2015, 2017, 2020, The Linux Foundation. All rights reserved. + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + */ + +#include <linux/bitfield.h> +#include <linux/bitops.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/iio/consumer.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/thermal.h> + +#include "../thermal_hwmon.h" + +#define QPNP_TM_REG_DIG_MINOR 0x00 +#define QPNP_TM_REG_DIG_MAJOR 0x01 +#define QPNP_TM_REG_TYPE 0x04 +#define QPNP_TM_REG_SUBTYPE 0x05 +#define QPNP_TM_REG_STATUS 0x08 +#define QPNP_TM_REG_IRQ_STATUS 0x10 +#define QPNP_TM_REG_SHUTDOWN_CTRL1 0x40 +#define QPNP_TM_REG_ALARM_CTRL 0x46 + +/* TEMP_DAC_STGx registers are only present for TEMP_GEN2 v2.0 */ +#define QPNP_TM_REG_TEMP_DAC_STG1 0x47 +#define QPNP_TM_REG_TEMP_DAC_STG2 0x48 +#define QPNP_TM_REG_TEMP_DAC_STG3 0x49 +#define QPNP_TM_REG_LITE_TEMP_CFG1 0x50 +#define QPNP_TM_REG_LITE_TEMP_CFG2 0x51 + +#define QPNP_TM_TYPE 0x09 +#define QPNP_TM_SUBTYPE_GEN1 0x08 +#define QPNP_TM_SUBTYPE_GEN2 0x09 +#define QPNP_TM_SUBTYPE_LITE 0xC0 + +#define STATUS_GEN1_STAGE_MASK GENMASK(1, 0) +#define STATUS_GEN2_STATE_MASK GENMASK(6, 4) + +/* IRQ status only needed for TEMP_ALARM_LITE */ +#define IRQ_STATUS_MASK BIT(0) + +#define SHUTDOWN_CTRL1_OVERRIDE_STAGE2 BIT(6) +#define SHUTDOWN_CTRL1_THRESHOLD_MASK GENMASK(1, 0) + +#define SHUTDOWN_CTRL1_RATE_25HZ BIT(3) + +#define ALARM_CTRL_FORCE_ENABLE BIT(7) + +#define LITE_TEMP_CFG_THRESHOLD_MASK GENMASK(3, 2) + +#define THRESH_COUNT 4 +#define STAGE_COUNT 3 + +enum overtemp_stage { + STAGE1 = 0, + STAGE2, + STAGE3, +}; + +/* Over-temperature trip point values in mC */ +static const long temp_map_gen1[THRESH_COUNT][STAGE_COUNT] = { + { 105000, 125000, 145000 }, + { 110000, 130000, 150000 }, + { 115000, 135000, 155000 }, + { 120000, 140000, 160000 }, +}; + +static const long temp_map_gen2_v1[THRESH_COUNT][STAGE_COUNT] = { + { 90000, 110000, 140000 }, + { 95000, 115000, 145000 }, + { 100000, 120000, 150000 }, + { 105000, 125000, 155000 }, +}; + +#define TEMP_THRESH_STEP 5000 /* Threshold step: 5 C */ + +#define THRESH_MIN 0 +#define THRESH_MAX 3 + +#define TEMP_STAGE_HYSTERESIS 2000 + +/* + * For TEMP_GEN2 v2.0, TEMP_DAC_STG1/2/3 registers are used to set the threshold + * for each stage independently. + * TEMP_DAC_STG* = 0 --> 80 C + * Each 8 step increase in TEMP_DAC_STG* value corresponds to 5 C (5000 mC). + */ +#define TEMP_DAC_MIN 80000 +#define TEMP_DAC_SCALE_NUM 8 +#define TEMP_DAC_SCALE_DEN 5000 + +#define TEMP_DAC_TEMP_TO_REG(temp) \ + (((temp) - TEMP_DAC_MIN) * TEMP_DAC_SCALE_NUM / TEMP_DAC_SCALE_DEN) +#define TEMP_DAC_REG_TO_TEMP(reg) \ + (TEMP_DAC_MIN + (reg) * TEMP_DAC_SCALE_DEN / TEMP_DAC_SCALE_NUM) + +static const long temp_dac_max[STAGE_COUNT] = { + 119375, 159375, 159375 +}; + +/* + * TEMP_ALARM_LITE has two stages: warning and shutdown with independently + * configured threshold temperatures. + */ + +static const long temp_lite_warning_map[THRESH_COUNT] = { + 115000, 125000, 135000, 145000 +}; + +static const long temp_lite_shutdown_map[THRESH_COUNT] = { + 135000, 145000, 160000, 175000 +}; + +/* Temperature in Milli Celsius reported during stage 0 if no ADC is present */ +#define DEFAULT_TEMP 37000 + +struct qpnp_tm_chip; + +struct spmi_temp_alarm_data { + const struct thermal_zone_device_ops *ops; + const long (*temp_map)[THRESH_COUNT][STAGE_COUNT]; + int (*sync_thresholds)(struct qpnp_tm_chip *chip); + int (*get_temp_stage)(struct qpnp_tm_chip *chip); + int (*configure_trip_temps)(struct qpnp_tm_chip *chip); +}; + +struct qpnp_tm_chip { + struct regmap *map; + struct device *dev; + struct thermal_zone_device *tz_dev; + const struct spmi_temp_alarm_data *data; + unsigned int subtype; + long temp; + unsigned int stage; + unsigned int base; + unsigned int ntrips; + /* protects .thresh, .stage and chip registers */ + struct mutex lock; + bool initialized; + bool require_stage2_shutdown; + long temp_thresh_map[STAGE_COUNT]; + + struct iio_channel *adc; +}; + +/* This array maps from GEN2 alarm state to GEN1 alarm stage */ +static const unsigned int alarm_state_map[8] = {0, 1, 1, 2, 2, 3, 3, 3}; + +static int qpnp_tm_read(struct qpnp_tm_chip *chip, u16 addr, u8 *data) +{ + unsigned int val; + int ret; + + ret = regmap_read(chip->map, chip->base + addr, &val); + if (ret < 0) + return ret; + + *data = val; + return 0; +} + +static int qpnp_tm_write(struct qpnp_tm_chip *chip, u16 addr, u8 data) +{ + return regmap_write(chip->map, chip->base + addr, data); +} + +/** + * qpnp_tm_decode_temp() - return temperature in mC corresponding to the + * specified over-temperature stage + * @chip: Pointer to the qpnp_tm chip + * @stage: Over-temperature stage + * + * Return: temperature in mC + */ +static long qpnp_tm_decode_temp(struct qpnp_tm_chip *chip, unsigned int stage) +{ + if (stage == 0 || stage > STAGE_COUNT) + return 0; + + return chip->temp_thresh_map[stage - 1]; +} + +/** + * qpnp_tm_gen1_get_temp_stage() - return over-temperature stage + * @chip: Pointer to the qpnp_tm chip + * + * Return: stage on success, or errno on failure. + */ +static int qpnp_tm_gen1_get_temp_stage(struct qpnp_tm_chip *chip) +{ + int ret; + u8 reg; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_STATUS, ®); + if (ret < 0) + return ret; + + return FIELD_GET(STATUS_GEN1_STAGE_MASK, reg); +} + +/** + * qpnp_tm_gen2_get_temp_stage() - return over-temperature stage + * @chip: Pointer to the qpnp_tm chip + * + * Return: stage on success, or errno on failure. + */ +static int qpnp_tm_gen2_get_temp_stage(struct qpnp_tm_chip *chip) +{ + int ret; + u8 reg; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_STATUS, ®); + if (ret < 0) + return ret; + + ret = FIELD_GET(STATUS_GEN2_STATE_MASK, reg); + + return alarm_state_map[ret]; +} + +/** + * qpnp_tm_lite_get_temp_stage() - return over-temperature stage + * @chip: Pointer to the qpnp_tm chip + * + * Return: alarm interrupt state on success, or errno on failure. + */ +static int qpnp_tm_lite_get_temp_stage(struct qpnp_tm_chip *chip) +{ + u8 reg = 0; + int ret; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_IRQ_STATUS, ®); + if (ret < 0) + return ret; + + return FIELD_GET(IRQ_STATUS_MASK, reg); +} + +/* + * This function updates the internal temp value based on the + * current thermal stage and threshold as well as the previous stage + */ +static int qpnp_tm_update_temp_no_adc(struct qpnp_tm_chip *chip) +{ + unsigned int stage_new, stage_old; + int ret; + + WARN_ON(!mutex_is_locked(&chip->lock)); + + ret = chip->data->get_temp_stage(chip); + if (ret < 0) + return ret; + stage_new = ret; + stage_old = chip->stage; + + if (stage_new > stage_old) { + /* increasing stage, use lower bound */ + chip->temp = qpnp_tm_decode_temp(chip, stage_new) + + TEMP_STAGE_HYSTERESIS; + } else if (stage_new < stage_old) { + /* decreasing stage, use upper bound */ + chip->temp = qpnp_tm_decode_temp(chip, stage_new + 1) + - TEMP_STAGE_HYSTERESIS; + } + + chip->stage = stage_new; + + return 0; +} + +static int qpnp_tm_get_temp(struct thermal_zone_device *tz, int *temp) +{ + struct qpnp_tm_chip *chip = thermal_zone_device_priv(tz); + int ret, mili_celsius; + + if (!temp) + return -EINVAL; + + if (!chip->initialized) { + *temp = DEFAULT_TEMP; + return 0; + } + + if (!chip->adc) { + mutex_lock(&chip->lock); + ret = qpnp_tm_update_temp_no_adc(chip); + mutex_unlock(&chip->lock); + if (ret < 0) + return ret; + } else { + ret = iio_read_channel_processed(chip->adc, &mili_celsius); + if (ret < 0) + return ret; + + chip->temp = mili_celsius; + } + + *temp = chip->temp; + + return 0; +} + +static int qpnp_tm_update_critical_trip_temp(struct qpnp_tm_chip *chip, + int temp) +{ + long stage2_threshold_min = (*chip->data->temp_map)[THRESH_MIN][STAGE2]; + long stage2_threshold_max = (*chip->data->temp_map)[THRESH_MAX][STAGE2]; + bool disable_stage2_shutdown = false; + u8 reg, threshold; + + WARN_ON(!mutex_is_locked(&chip->lock)); + + /* + * Default: Stage 2 and Stage 3 shutdown enabled, thresholds at + * lowest threshold set, monitoring at 25Hz + */ + reg = SHUTDOWN_CTRL1_RATE_25HZ; + + if (temp == THERMAL_TEMP_INVALID || + temp < stage2_threshold_min) { + threshold = THRESH_MIN; + goto skip; + } + + if (temp <= stage2_threshold_max) { + threshold = THRESH_MAX - + ((stage2_threshold_max - temp) / + TEMP_THRESH_STEP); + disable_stage2_shutdown = true; + } else { + threshold = THRESH_MAX; + + if (chip->adc) + disable_stage2_shutdown = true; + else + dev_warn(chip->dev, + "No ADC is configured and critical temperature %d mC is above the maximum stage 2 threshold of %ld mC! Configuring stage 2 shutdown at %ld mC.\n", + temp, stage2_threshold_max, stage2_threshold_max); + } + +skip: + memcpy(chip->temp_thresh_map, chip->data->temp_map[threshold], + sizeof(chip->temp_thresh_map)); + reg |= threshold; + if (disable_stage2_shutdown && !chip->require_stage2_shutdown) + reg |= SHUTDOWN_CTRL1_OVERRIDE_STAGE2; + + return qpnp_tm_write(chip, QPNP_TM_REG_SHUTDOWN_CTRL1, reg); +} + +static int qpnp_tm_set_trip_temp(struct thermal_zone_device *tz, + const struct thermal_trip *trip, int temp) +{ + struct qpnp_tm_chip *chip = thermal_zone_device_priv(tz); + int ret; + + if (trip->type != THERMAL_TRIP_CRITICAL) + return 0; + + mutex_lock(&chip->lock); + ret = qpnp_tm_update_critical_trip_temp(chip, temp); + mutex_unlock(&chip->lock); + + return ret; +} + +static const struct thermal_zone_device_ops qpnp_tm_sensor_ops = { + .get_temp = qpnp_tm_get_temp, + .set_trip_temp = qpnp_tm_set_trip_temp, +}; + +static int qpnp_tm_gen2_rev2_set_temp_thresh(struct qpnp_tm_chip *chip, unsigned int trip, int temp) +{ + int ret, temp_cfg; + u8 reg; + + WARN_ON(!mutex_is_locked(&chip->lock)); + + if (trip >= STAGE_COUNT) { + dev_err(chip->dev, "invalid TEMP_DAC trip = %d\n", trip); + return -EINVAL; + } else if (temp < TEMP_DAC_MIN || temp > temp_dac_max[trip]) { + dev_err(chip->dev, "invalid TEMP_DAC temp = %d\n", temp); + return -EINVAL; + } + + reg = TEMP_DAC_TEMP_TO_REG(temp); + temp_cfg = TEMP_DAC_REG_TO_TEMP(reg); + + ret = qpnp_tm_write(chip, QPNP_TM_REG_TEMP_DAC_STG1 + trip, reg); + if (ret < 0) { + dev_err(chip->dev, "TEMP_DAC_STG write failed, ret=%d\n", ret); + return ret; + } + + chip->temp_thresh_map[trip] = temp_cfg; + + return 0; +} + +static int qpnp_tm_gen2_rev2_set_trip_temp(struct thermal_zone_device *tz, + const struct thermal_trip *trip, int temp) +{ + unsigned int trip_index = THERMAL_TRIP_PRIV_TO_INT(trip->priv); + struct qpnp_tm_chip *chip = thermal_zone_device_priv(tz); + int ret; + + mutex_lock(&chip->lock); + ret = qpnp_tm_gen2_rev2_set_temp_thresh(chip, trip_index, temp); + mutex_unlock(&chip->lock); + + return ret; +} + +static const struct thermal_zone_device_ops qpnp_tm_gen2_rev2_sensor_ops = { + .get_temp = qpnp_tm_get_temp, + .set_trip_temp = qpnp_tm_gen2_rev2_set_trip_temp, +}; + +static int qpnp_tm_lite_set_temp_thresh(struct qpnp_tm_chip *chip, unsigned int trip, int temp) +{ + int ret, temp_cfg, i; + const long *temp_map; + u8 reg, thresh; + u16 addr; + + WARN_ON(!mutex_is_locked(&chip->lock)); + + if (trip >= STAGE_COUNT) { + dev_err(chip->dev, "invalid TEMP_LITE trip = %d\n", trip); + return -EINVAL; + } + + switch (trip) { + case 0: + temp_map = temp_lite_warning_map; + addr = QPNP_TM_REG_LITE_TEMP_CFG1; + break; + case 1: + /* + * The second trip point is purely in software to facilitate + * a controlled shutdown after the warning threshold is crossed + * but before the automatic hardware shutdown threshold is + * crossed. + */ + return 0; + case 2: + temp_map = temp_lite_shutdown_map; + addr = QPNP_TM_REG_LITE_TEMP_CFG2; + break; + default: + return 0; + } + + if (temp < temp_map[THRESH_MIN] || temp > temp_map[THRESH_MAX]) { + dev_err(chip->dev, "invalid TEMP_LITE temp = %d\n", temp); + return -EINVAL; + } + + thresh = 0; + temp_cfg = temp_map[thresh]; + for (i = THRESH_MAX; i >= THRESH_MIN; i--) { + if (temp >= temp_map[i]) { + thresh = i; + temp_cfg = temp_map[i]; + break; + } + } + + if (temp_cfg == chip->temp_thresh_map[trip]) + return 0; + + ret = qpnp_tm_read(chip, addr, ®); + if (ret < 0) { + dev_err(chip->dev, "LITE_TEMP_CFG read failed, ret=%d\n", ret); + return ret; + } + + reg &= ~LITE_TEMP_CFG_THRESHOLD_MASK; + reg |= FIELD_PREP(LITE_TEMP_CFG_THRESHOLD_MASK, thresh); + + ret = qpnp_tm_write(chip, addr, reg); + if (ret < 0) { + dev_err(chip->dev, "LITE_TEMP_CFG write failed, ret=%d\n", ret); + return ret; + } + + chip->temp_thresh_map[trip] = temp_cfg; + + return 0; +} + +static int qpnp_tm_lite_set_trip_temp(struct thermal_zone_device *tz, + const struct thermal_trip *trip, int temp) +{ + unsigned int trip_index = THERMAL_TRIP_PRIV_TO_INT(trip->priv); + struct qpnp_tm_chip *chip = thermal_zone_device_priv(tz); + int ret; + + mutex_lock(&chip->lock); + ret = qpnp_tm_lite_set_temp_thresh(chip, trip_index, temp); + mutex_unlock(&chip->lock); + + return ret; +} + +static const struct thermal_zone_device_ops qpnp_tm_lite_sensor_ops = { + .get_temp = qpnp_tm_get_temp, + .set_trip_temp = qpnp_tm_lite_set_trip_temp, +}; + +static irqreturn_t qpnp_tm_isr(int irq, void *data) +{ + struct qpnp_tm_chip *chip = data; + + thermal_zone_device_update(chip->tz_dev, THERMAL_EVENT_UNSPECIFIED); + + return IRQ_HANDLED; +} + +/* Read the hardware default stage threshold temperatures */ +static int qpnp_tm_sync_thresholds(struct qpnp_tm_chip *chip) +{ + u8 reg, threshold; + int ret; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_SHUTDOWN_CTRL1, ®); + if (ret < 0) + return ret; + + threshold = reg & SHUTDOWN_CTRL1_THRESHOLD_MASK; + memcpy(chip->temp_thresh_map, chip->data->temp_map[threshold], + sizeof(chip->temp_thresh_map)); + + return ret; +} + +static int qpnp_tm_configure_trip_temp(struct qpnp_tm_chip *chip) +{ + int crit_temp, ret; + + ret = thermal_zone_get_crit_temp(chip->tz_dev, &crit_temp); + if (ret) + crit_temp = THERMAL_TEMP_INVALID; + + mutex_lock(&chip->lock); + ret = qpnp_tm_update_critical_trip_temp(chip, crit_temp); + mutex_unlock(&chip->lock); + + return ret; +} + +/* Configure TEMP_DAC registers based on DT thermal_zone trips */ +static int qpnp_tm_gen2_rev2_configure_trip_temps_cb(struct thermal_trip *trip, void *data) +{ + struct qpnp_tm_chip *chip = data; + int ret; + + mutex_lock(&chip->lock); + trip->priv = THERMAL_INT_TO_TRIP_PRIV(chip->ntrips); + ret = qpnp_tm_gen2_rev2_set_temp_thresh(chip, chip->ntrips, trip->temperature); + chip->ntrips++; + mutex_unlock(&chip->lock); + + return ret; +} + +static int qpnp_tm_gen2_rev2_configure_trip_temps(struct qpnp_tm_chip *chip) +{ + int ret, i; + + ret = thermal_zone_for_each_trip(chip->tz_dev, + qpnp_tm_gen2_rev2_configure_trip_temps_cb, chip); + if (ret < 0) + return ret; + + /* Verify that trips are strictly increasing. */ + for (i = 1; i < STAGE_COUNT; i++) { + if (chip->temp_thresh_map[i] <= chip->temp_thresh_map[i - 1]) { + dev_err(chip->dev, "Threshold %d=%ld <= threshold %d=%ld\n", + i, chip->temp_thresh_map[i], i - 1, + chip->temp_thresh_map[i - 1]); + return -EINVAL; + } + } + + return 0; +} + +/* Read the hardware default TEMP_DAC stage threshold temperatures */ +static int qpnp_tm_gen2_rev2_sync_thresholds(struct qpnp_tm_chip *chip) +{ + int ret, i; + u8 reg = 0; + + for (i = 0; i < STAGE_COUNT; i++) { + ret = qpnp_tm_read(chip, QPNP_TM_REG_TEMP_DAC_STG1 + i, ®); + if (ret < 0) + return ret; + + chip->temp_thresh_map[i] = TEMP_DAC_REG_TO_TEMP(reg); + } + + return 0; +} + +/* Configure TEMP_LITE registers based on DT thermal_zone trips */ +static int qpnp_tm_lite_configure_trip_temps_cb(struct thermal_trip *trip, void *data) +{ + struct qpnp_tm_chip *chip = data; + int ret; + + mutex_lock(&chip->lock); + trip->priv = THERMAL_INT_TO_TRIP_PRIV(chip->ntrips); + ret = qpnp_tm_lite_set_temp_thresh(chip, chip->ntrips, trip->temperature); + chip->ntrips++; + mutex_unlock(&chip->lock); + + return ret; +} + +static int qpnp_tm_lite_configure_trip_temps(struct qpnp_tm_chip *chip) +{ + int ret; + + ret = thermal_zone_for_each_trip(chip->tz_dev, qpnp_tm_lite_configure_trip_temps_cb, chip); + if (ret < 0) + return ret; + + /* Verify that trips are strictly increasing. */ + if (chip->temp_thresh_map[2] <= chip->temp_thresh_map[0]) { + dev_err(chip->dev, "Threshold 2=%ld <= threshold 0=%ld\n", + chip->temp_thresh_map[2], chip->temp_thresh_map[0]); + return -EINVAL; + } + + return 0; +} + +/* Read the hardware default TEMP_LITE stage threshold temperatures */ +static int qpnp_tm_lite_sync_thresholds(struct qpnp_tm_chip *chip) +{ + int ret, thresh; + u8 reg = 0; + + /* + * Store the warning trip temp in temp_thresh_map[0] and the shutdown trip + * temp in temp_thresh_map[2]. The second trip point is purely in software + * to facilitate a controlled shutdown after the warning threshold is + * crossed but before the automatic hardware shutdown threshold is + * crossed. Thus, there is no register to read for the second trip + * point. + */ + ret = qpnp_tm_read(chip, QPNP_TM_REG_LITE_TEMP_CFG1, ®); + if (ret < 0) + return ret; + + thresh = FIELD_GET(LITE_TEMP_CFG_THRESHOLD_MASK, reg); + chip->temp_thresh_map[0] = temp_lite_warning_map[thresh]; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_LITE_TEMP_CFG2, ®); + if (ret < 0) + return ret; + + thresh = FIELD_GET(LITE_TEMP_CFG_THRESHOLD_MASK, reg); + chip->temp_thresh_map[2] = temp_lite_shutdown_map[thresh]; + + return 0; +} + +static const struct spmi_temp_alarm_data spmi_temp_alarm_data = { + .ops = &qpnp_tm_sensor_ops, + .temp_map = &temp_map_gen1, + .sync_thresholds = qpnp_tm_sync_thresholds, + .configure_trip_temps = qpnp_tm_configure_trip_temp, + .get_temp_stage = qpnp_tm_gen1_get_temp_stage, +}; + +static const struct spmi_temp_alarm_data spmi_temp_alarm_gen2_data = { + .ops = &qpnp_tm_sensor_ops, + .temp_map = &temp_map_gen1, + .sync_thresholds = qpnp_tm_sync_thresholds, + .configure_trip_temps = qpnp_tm_configure_trip_temp, + .get_temp_stage = qpnp_tm_gen2_get_temp_stage, +}; + +static const struct spmi_temp_alarm_data spmi_temp_alarm_gen2_rev1_data = { + .ops = &qpnp_tm_sensor_ops, + .temp_map = &temp_map_gen2_v1, + .sync_thresholds = qpnp_tm_sync_thresholds, + .configure_trip_temps = qpnp_tm_configure_trip_temp, + .get_temp_stage = qpnp_tm_gen2_get_temp_stage, +}; + +static const struct spmi_temp_alarm_data spmi_temp_alarm_gen2_rev2_data = { + .ops = &qpnp_tm_gen2_rev2_sensor_ops, + .sync_thresholds = qpnp_tm_gen2_rev2_sync_thresholds, + .configure_trip_temps = qpnp_tm_gen2_rev2_configure_trip_temps, + .get_temp_stage = qpnp_tm_gen2_get_temp_stage, +}; + +static const struct spmi_temp_alarm_data spmi_temp_alarm_lite_data = { + .ops = &qpnp_tm_lite_sensor_ops, + .sync_thresholds = qpnp_tm_lite_sync_thresholds, + .configure_trip_temps = qpnp_tm_lite_configure_trip_temps, + .get_temp_stage = qpnp_tm_lite_get_temp_stage, +}; + +/* + * This function initializes the internal temp value based on only the + * current thermal stage and threshold. + */ +static int qpnp_tm_threshold_init(struct qpnp_tm_chip *chip) +{ + int ret; + + ret = chip->data->sync_thresholds(chip); + if (ret < 0) + return ret; + + ret = chip->data->get_temp_stage(chip); + if (ret < 0) + return ret; + chip->stage = ret; + chip->temp = DEFAULT_TEMP; + + if (chip->stage) + chip->temp = qpnp_tm_decode_temp(chip, chip->stage); + + return ret; +} + +/* This function initializes threshold control and disables shutdown override. */ +static int qpnp_tm_init(struct qpnp_tm_chip *chip) +{ + int ret; + u8 reg; + + ret = chip->data->configure_trip_temps(chip); + if (ret < 0) + return ret; + + /* Enable the thermal alarm PMIC module in always-on mode. */ + reg = ALARM_CTRL_FORCE_ENABLE; + ret = qpnp_tm_write(chip, QPNP_TM_REG_ALARM_CTRL, reg); + + chip->initialized = true; + + return ret; +} + +static int qpnp_tm_probe(struct platform_device *pdev) +{ + struct qpnp_tm_chip *chip; + struct device_node *node; + u8 type, subtype, dig_major, dig_minor; + u32 res, dig_revision; + int ret, irq; + + node = pdev->dev.of_node; + + chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->dev = &pdev->dev; + + mutex_init(&chip->lock); + + chip->map = dev_get_regmap(pdev->dev.parent, NULL); + if (!chip->map) + return -ENXIO; + + ret = of_property_read_u32(node, "reg", &res); + if (ret < 0) + return ret; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + /* ADC based measurements are optional */ + chip->adc = devm_iio_channel_get(&pdev->dev, "thermal"); + if (IS_ERR(chip->adc)) { + ret = PTR_ERR(chip->adc); + chip->adc = NULL; + if (ret == -EPROBE_DEFER) + return ret; + } + + chip->base = res; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_TYPE, &type); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "could not read type\n"); + + ret = qpnp_tm_read(chip, QPNP_TM_REG_SUBTYPE, &subtype); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "could not read subtype\n"); + + ret = qpnp_tm_read(chip, QPNP_TM_REG_DIG_MAJOR, &dig_major); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "could not read dig_major\n"); + + ret = qpnp_tm_read(chip, QPNP_TM_REG_DIG_MINOR, &dig_minor); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "could not read dig_minor\n"); + + if (type != QPNP_TM_TYPE || (subtype != QPNP_TM_SUBTYPE_GEN1 + && subtype != QPNP_TM_SUBTYPE_GEN2 + && subtype != QPNP_TM_SUBTYPE_LITE)) { + dev_err(&pdev->dev, "invalid type 0x%02x or subtype 0x%02x\n", + type, subtype); + return -ENODEV; + } + + chip->subtype = subtype; + if (subtype == QPNP_TM_SUBTYPE_GEN1) + chip->data = &spmi_temp_alarm_data; + else if (subtype == QPNP_TM_SUBTYPE_GEN2 && dig_major == 0) + chip->data = &spmi_temp_alarm_gen2_data; + else if (subtype == QPNP_TM_SUBTYPE_GEN2 && dig_major == 1) + chip->data = &spmi_temp_alarm_gen2_rev1_data; + else if (subtype == QPNP_TM_SUBTYPE_GEN2 && dig_major >= 2) + chip->data = &spmi_temp_alarm_gen2_rev2_data; + else if (subtype == QPNP_TM_SUBTYPE_LITE) + chip->data = &spmi_temp_alarm_lite_data; + else + return -ENODEV; + + if (chip->subtype == QPNP_TM_SUBTYPE_GEN2) { + dig_revision = (dig_major << 8) | dig_minor; + /* + * Check if stage 2 automatic partial shutdown must remain + * enabled to avoid potential repeated faults upon reaching + * over-temperature stage 3. + */ + switch (dig_revision) { + case 0x0001: + case 0x0002: + case 0x0100: + case 0x0101: + chip->require_stage2_shutdown = true; + break; + } + } + + ret = qpnp_tm_threshold_init(chip); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, "threshold init failed\n"); + + /* + * Register the sensor before initializing the hardware to be able to + * read the trip points. get_temp() returns the default temperature + * before the hardware initialization is completed. + */ + chip->tz_dev = devm_thermal_of_zone_register( + &pdev->dev, 0, chip, chip->data->ops); + if (IS_ERR(chip->tz_dev)) + return dev_err_probe(&pdev->dev, PTR_ERR(chip->tz_dev), + "failed to register sensor\n"); + + ret = qpnp_tm_init(chip); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, "init failed\n"); + + devm_thermal_add_hwmon_sysfs(&pdev->dev, chip->tz_dev); + + ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, qpnp_tm_isr, + IRQF_ONESHOT, node->name, chip); + if (ret < 0) + return ret; + + thermal_zone_device_update(chip->tz_dev, THERMAL_EVENT_UNSPECIFIED); + + return 0; +} + +static const struct of_device_id qpnp_tm_match_table[] = { + { .compatible = "qcom,spmi-temp-alarm" }, + { } +}; +MODULE_DEVICE_TABLE(of, qpnp_tm_match_table); + +static struct platform_driver qpnp_tm_driver = { + .driver = { + .name = "spmi-temp-alarm", + .of_match_table = qpnp_tm_match_table, + }, + .probe = qpnp_tm_probe, +}; +module_platform_driver(qpnp_tm_driver); + +MODULE_ALIAS("platform:spmi-temp-alarm"); +MODULE_DESCRIPTION("QPNP PMIC Temperature Alarm driver"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS("IIO_CONSUMER"); diff --git a/drivers/thermal/qcom/tsens-8960.c b/drivers/thermal/qcom/tsens-8960.c new file mode 100644 index 000000000..4585904fb --- /dev/null +++ b/drivers/thermal/qcom/tsens-8960.c @@ -0,0 +1,285 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2015, The Linux Foundation. All rights reserved. + */ + +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/bitops.h> +#include <linux/regmap.h> +#include <linux/thermal.h> +#include "tsens.h" + +#define CONFIG_ADDR 0x3640 +#define CONFIG_ADDR_8660 0x3620 +/* CONFIG_ADDR bitmasks */ +#define CONFIG 0x9b +#define CONFIG_MASK 0xf +#define CONFIG_8660 1 +#define CONFIG_SHIFT_8660 28 +#define CONFIG_MASK_8660 (3 << CONFIG_SHIFT_8660) + +#define CNTL_ADDR 0x3620 +/* CNTL_ADDR bitmasks */ +#define EN BIT(0) +#define SW_RST BIT(1) + +#define MEASURE_PERIOD BIT(18) +#define SLP_CLK_ENA BIT(26) +#define SLP_CLK_ENA_8660 BIT(24) +#define SENSOR0_SHIFT 3 + +#define THRESHOLD_ADDR 0x3624 + +#define INT_STATUS_ADDR 0x363c + +#define S0_STATUS_OFF 0x3628 +#define S1_STATUS_OFF 0x362c +#define S2_STATUS_OFF 0x3630 +#define S3_STATUS_OFF 0x3634 +#define S4_STATUS_OFF 0x3638 +#define S5_STATUS_OFF 0x3664 /* Sensors 5-10 found on apq8064/msm8960 */ +#define S6_STATUS_OFF 0x3668 +#define S7_STATUS_OFF 0x366c +#define S8_STATUS_OFF 0x3670 +#define S9_STATUS_OFF 0x3674 +#define S10_STATUS_OFF 0x3678 + +/* Original slope - 350 to compensate mC to C inaccuracy */ +static u32 tsens_msm8960_slope[] = { + 826, 826, 804, 826, + 761, 782, 782, 849, + 782, 849, 782 + }; + +static int suspend_8960(struct tsens_priv *priv) +{ + int ret; + unsigned int mask; + struct regmap *map = priv->tm_map; + + ret = regmap_read(map, THRESHOLD_ADDR, &priv->ctx.threshold); + if (ret) + return ret; + + ret = regmap_read(map, CNTL_ADDR, &priv->ctx.control); + if (ret) + return ret; + + if (priv->num_sensors > 1) + mask = SLP_CLK_ENA | EN; + else + mask = SLP_CLK_ENA_8660 | EN; + + ret = regmap_update_bits(map, CNTL_ADDR, mask, 0); + if (ret) + return ret; + + return 0; +} + +static int resume_8960(struct tsens_priv *priv) +{ + int ret; + struct regmap *map = priv->tm_map; + + ret = regmap_update_bits(map, CNTL_ADDR, SW_RST, SW_RST); + if (ret) + return ret; + + /* + * Separate CONFIG restore is not needed only for 8660 as + * config is part of CTRL Addr and its restored as such + */ + if (priv->num_sensors > 1) { + ret = regmap_update_bits(map, CONFIG_ADDR, CONFIG_MASK, CONFIG); + if (ret) + return ret; + } + + ret = regmap_write(map, THRESHOLD_ADDR, priv->ctx.threshold); + if (ret) + return ret; + + ret = regmap_write(map, CNTL_ADDR, priv->ctx.control); + if (ret) + return ret; + + return 0; +} + +static int enable_8960(struct tsens_priv *priv, int id) +{ + int ret; + u32 reg, mask = BIT(id); + + ret = regmap_read(priv->tm_map, CNTL_ADDR, ®); + if (ret) + return ret; + + /* HARDWARE BUG: + * On platforms with more than 6 sensors, all remaining sensors + * must be enabled together, otherwise undefined results are expected. + * (Sensor 6-7 disabled, Sensor 3 disabled...) In the original driver, + * all the sensors are enabled in one step hence this bug is not + * triggered. + */ + if (id > 5) + mask = GENMASK(10, 6); + + mask <<= SENSOR0_SHIFT; + + /* Sensors already enabled. Skip. */ + if ((reg & mask) == mask) + return 0; + + ret = regmap_write(priv->tm_map, CNTL_ADDR, reg | SW_RST); + if (ret) + return ret; + + reg |= MEASURE_PERIOD; + + if (priv->num_sensors > 1) + reg |= mask | SLP_CLK_ENA | EN; + else + reg |= mask | SLP_CLK_ENA_8660 | EN; + + ret = regmap_write(priv->tm_map, CNTL_ADDR, reg); + if (ret) + return ret; + + return 0; +} + +static void disable_8960(struct tsens_priv *priv) +{ + int ret; + u32 reg_cntl; + u32 mask; + + mask = GENMASK(priv->num_sensors - 1, 0); + mask <<= SENSOR0_SHIFT; + mask |= EN; + + ret = regmap_read(priv->tm_map, CNTL_ADDR, ®_cntl); + if (ret) + return; + + reg_cntl &= ~mask; + + if (priv->num_sensors > 1) + reg_cntl &= ~SLP_CLK_ENA; + else + reg_cntl &= ~SLP_CLK_ENA_8660; + + regmap_write(priv->tm_map, CNTL_ADDR, reg_cntl); +} + +static int calibrate_8960(struct tsens_priv *priv) +{ + int i; + char *data; + u32 p1[11]; + + data = qfprom_read(priv->dev, "calib"); + if (IS_ERR(data)) + data = qfprom_read(priv->dev, "calib_backup"); + if (IS_ERR(data)) + return PTR_ERR(data); + + for (i = 0; i < priv->num_sensors; i++) { + p1[i] = data[i]; + priv->sensor[i].slope = tsens_msm8960_slope[i]; + } + + compute_intercept_slope(priv, p1, NULL, ONE_PT_CALIB); + + kfree(data); + + return 0; +} + +static const struct reg_field tsens_8960_regfields[MAX_REGFIELDS] = { + /* ----- SROT ------ */ + /* No VERSION information */ + + /* CNTL */ + [TSENS_EN] = REG_FIELD(CNTL_ADDR, 0, 0), + [TSENS_SW_RST] = REG_FIELD(CNTL_ADDR, 1, 1), + /* 8960 has 5 sensors, 8660 has 11, we only handle 5 */ + [SENSOR_EN] = REG_FIELD(CNTL_ADDR, 3, 7), + + /* ----- TM ------ */ + /* INTERRUPT ENABLE */ + /* NO INTERRUPT ENABLE */ + + /* Single UPPER/LOWER TEMPERATURE THRESHOLD for all sensors */ + [LOW_THRESH_0] = REG_FIELD(THRESHOLD_ADDR, 0, 7), + [UP_THRESH_0] = REG_FIELD(THRESHOLD_ADDR, 8, 15), + /* MIN_THRESH_0 and MAX_THRESH_0 are not present in the regfield + * Recycle CRIT_THRESH_0 and 1 to set the required regs to hardcoded temp + * MIN_THRESH_0 -> CRIT_THRESH_1 + * MAX_THRESH_0 -> CRIT_THRESH_0 + */ + [CRIT_THRESH_1] = REG_FIELD(THRESHOLD_ADDR, 16, 23), + [CRIT_THRESH_0] = REG_FIELD(THRESHOLD_ADDR, 24, 31), + + /* UPPER/LOWER INTERRUPT [CLEAR/STATUS] */ + /* 1 == clear, 0 == normal operation */ + [LOW_INT_CLEAR_0] = REG_FIELD(CNTL_ADDR, 9, 9), + [UP_INT_CLEAR_0] = REG_FIELD(CNTL_ADDR, 10, 10), + + /* NO CRITICAL INTERRUPT SUPPORT on 8960 */ + + /* Sn_STATUS */ + [LAST_TEMP_0] = REG_FIELD(S0_STATUS_OFF, 0, 7), + [LAST_TEMP_1] = REG_FIELD(S1_STATUS_OFF, 0, 7), + [LAST_TEMP_2] = REG_FIELD(S2_STATUS_OFF, 0, 7), + [LAST_TEMP_3] = REG_FIELD(S3_STATUS_OFF, 0, 7), + [LAST_TEMP_4] = REG_FIELD(S4_STATUS_OFF, 0, 7), + [LAST_TEMP_5] = REG_FIELD(S5_STATUS_OFF, 0, 7), + [LAST_TEMP_6] = REG_FIELD(S6_STATUS_OFF, 0, 7), + [LAST_TEMP_7] = REG_FIELD(S7_STATUS_OFF, 0, 7), + [LAST_TEMP_8] = REG_FIELD(S8_STATUS_OFF, 0, 7), + [LAST_TEMP_9] = REG_FIELD(S9_STATUS_OFF, 0, 7), + [LAST_TEMP_10] = REG_FIELD(S10_STATUS_OFF, 0, 7), + + /* No VALID field on 8960 */ + /* TSENS_INT_STATUS bits: 1 == threshold violated */ + [MIN_STATUS_0] = REG_FIELD(INT_STATUS_ADDR, 0, 0), + [LOWER_STATUS_0] = REG_FIELD(INT_STATUS_ADDR, 1, 1), + [UPPER_STATUS_0] = REG_FIELD(INT_STATUS_ADDR, 2, 2), + /* No CRITICAL field on 8960 */ + [MAX_STATUS_0] = REG_FIELD(INT_STATUS_ADDR, 3, 3), + + /* TRDY: 1=ready, 0=in progress */ + [TRDY] = REG_FIELD(INT_STATUS_ADDR, 7, 7), +}; + +static const struct tsens_ops ops_8960 = { + .init = init_common, + .calibrate = calibrate_8960, + .get_temp = get_temp_common, + .enable = enable_8960, + .disable = disable_8960, + .suspend = suspend_8960, + .resume = resume_8960, +}; + +static struct tsens_features tsens_8960_feat = { + .ver_major = VER_0, + .crit_int = 0, + .combo_int = 0, + .adc = 1, + .srot_split = 0, + .max_sensors = 11, + .trip_min_temp = -40000, + .trip_max_temp = 120000, +}; + +struct tsens_plat_data data_8960 = { + .num_sensors = 11, + .ops = &ops_8960, + .feat = &tsens_8960_feat, + .fields = tsens_8960_regfields, +}; diff --git a/drivers/thermal/qcom/tsens-v0_1.c b/drivers/thermal/qcom/tsens-v0_1.c new file mode 100644 index 000000000..32d2d3e33 --- /dev/null +++ b/drivers/thermal/qcom/tsens-v0_1.c @@ -0,0 +1,408 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2015, The Linux Foundation. All rights reserved. + */ + +#include <linux/bitfield.h> +#include <linux/nvmem-consumer.h> +#include <linux/platform_device.h> +#include "tsens.h" + +/* ----- SROT ------ */ +#define SROT_CTRL_OFF 0x0000 + +/* ----- TM ------ */ +#define TM_INT_EN_OFF 0x0000 +#define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF 0x0004 +#define TM_Sn_STATUS_OFF 0x0030 +#define TM_TRDY_OFF 0x005c + +/* extra data for 8974 */ +#define BKP_SEL 0x3 +#define BKP_REDUN_SEL 0xe0000000 + +#define BIT_APPEND 0x3 + +static struct tsens_legacy_calibration_format tsens_8916_nvmem = { + .base_len = 7, + .base_shift = 3, + .sp_len = 5, + .mode = { 0, 29, 1 }, + .invalid = { 0, 31, 1 }, + .base = { { 0, 0 }, { 1, 25 } }, + .sp = { + { { 0, 7 }, { 0, 12 } }, + { { 0, 17 }, { 0, 22 } }, + { { 0, 27 }, { 1, 0 } }, + { { 1, 5 }, { 1, 10 } }, + { { 1, 15 }, { 1, 20 } }, + }, +}; + +static struct tsens_legacy_calibration_format tsens_8974_nvmem = { + .base_len = 8, + .base_shift = 2, + .sp_len = 6, + .mode = { 1, 30 }, + .invalid = { 3, 30 }, + .base = { { 0, 0 }, { 2, 12 } }, + .sp = { + { { 0, 8 }, { 2, 20 } }, + { { 0, 14 }, { 2, 26 } }, + { { 0, 20 }, { 3, 0 } }, + { { 0, 26 }, { 3, 6 } }, + { { 1, 0 }, { 3, 12 } }, + { { 1, 6 }, { 3, 18 } }, + { { 1, 12 }, { 3, 24 } }, + { { 1, 18 }, { 4, 0 } }, + { { 1, 24 }, { 4, 6 } }, + { { 2, 0 }, { 4, 12 } }, + { { 2, 6 }, { 4, 18 } }, + }, +}; + +static struct tsens_legacy_calibration_format tsens_8974_backup_nvmem = { + .base_len = 8, + .base_shift = 2, + .sp_len = 6, + .mode = { 4, 30, 1 }, + .invalid = { 5, 30, 1 }, + .base = { { 0, 0 }, { 2, 18 } }, + .sp = { + { { 0, 8 }, { 2, 26 } }, + { { 0, 14 }, { 3, 0 } }, + { { 0, 20 }, { 3, 6 } }, + { { 0, 26 }, { 3, 12 } }, + { { 1, 0 }, { 3, 18 } }, + { { 1, 6 }, { 3, 24, 1 } }, + { { 1, 12 }, { 4, 0, 1 } }, + { { 1, 18 }, { 4, 6, 1 } }, + { { 2, 0 }, { 4, 12, 1 } }, + { { 2, 6 }, { 4, 18, 1 } }, + { { 2, 12 }, { 4, 24, 1 } }, + }, +}; + +static int calibrate_8916(struct tsens_priv *priv) +{ + u32 p1[5], p2[5]; + u32 *qfprom_cdata, *qfprom_csel; + int mode, ret; + + ret = tsens_calibrate_nvmem(priv, 3); + if (!ret) + return 0; + + qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); + if (IS_ERR(qfprom_cdata)) + return PTR_ERR(qfprom_cdata); + + qfprom_csel = (u32 *)qfprom_read(priv->dev, "calib_sel"); + if (IS_ERR(qfprom_csel)) { + kfree(qfprom_cdata); + return PTR_ERR(qfprom_csel); + } + + mode = tsens_read_calibration_legacy(priv, &tsens_8916_nvmem, + p1, p2, + qfprom_cdata, qfprom_csel); + + compute_intercept_slope(priv, p1, p2, mode); + kfree(qfprom_cdata); + kfree(qfprom_csel); + + return 0; +} + +static void fixup_8974_points(int mode, u32 *p1, u32 *p2) +{ + int i; + + if (mode == NO_PT_CALIB) { + p1[0] += 2; + p1[1] += 9; + p1[2] += 3; + p1[3] += 9; + p1[4] += 5; + p1[5] += 9; + p1[6] += 7; + p1[7] += 10; + p1[8] += 8; + p1[9] += 9; + p1[10] += 8; + } else { + for (i = 0; i < 11; i++) { + /* + * ONE_PT_CALIB requires using addition here instead of + * using OR operation. + */ + p1[i] += BIT_APPEND; + p2[i] += BIT_APPEND; + } + } + +} + +static int calibrate_8974_nvmem(struct tsens_priv *priv) +{ + u32 p1[11], p2[11]; + u32 backup; + int ret, mode; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "use_backup", &backup); + if (ret == -ENOENT) + dev_warn(priv->dev, "Please migrate to separate nvmem cells for calibration data\n"); + if (ret < 0) + return ret; + + mode = tsens_read_calibration(priv, 2, p1, p2, backup == BKP_SEL); + if (mode < 0) + return mode; + + fixup_8974_points(mode, p1, p2); + + compute_intercept_slope(priv, p1, p2, mode); + + return 0; +} + +static int calibrate_8974(struct tsens_priv *priv) +{ + u32 p1[11], p2[11]; + u32 *calib, *bkp; + u32 calib_redun_sel; + int mode, ret; + + ret = calibrate_8974_nvmem(priv); + if (ret == 0) + return 0; + + calib = (u32 *)qfprom_read(priv->dev, "calib"); + if (IS_ERR(calib)) + return PTR_ERR(calib); + + bkp = (u32 *)qfprom_read(priv->dev, "calib_backup"); + if (IS_ERR(bkp)) { + kfree(calib); + return PTR_ERR(bkp); + } + + calib_redun_sel = FIELD_GET(BKP_REDUN_SEL, bkp[1]); + + if (calib_redun_sel == BKP_SEL) + mode = tsens_read_calibration_legacy(priv, &tsens_8974_backup_nvmem, + p1, p2, + bkp, calib); + else + mode = tsens_read_calibration_legacy(priv, &tsens_8974_nvmem, + p1, p2, + calib, NULL); + + fixup_8974_points(mode, p1, p2); + + compute_intercept_slope(priv, p1, p2, mode); + kfree(calib); + kfree(bkp); + + return 0; +} + +static int __init init_8226(struct tsens_priv *priv) +{ + priv->sensor[0].slope = 2901; + priv->sensor[1].slope = 2846; + priv->sensor[2].slope = 3038; + priv->sensor[3].slope = 2955; + priv->sensor[4].slope = 2901; + priv->sensor[5].slope = 2846; + + return init_common(priv); +} + +static int __init init_8909(struct tsens_priv *priv) +{ + int i; + + for (i = 0; i < priv->num_sensors; ++i) + priv->sensor[i].slope = 3000; + + priv->sensor[0].p1_calib_offset = 0; + priv->sensor[0].p2_calib_offset = 0; + priv->sensor[1].p1_calib_offset = -10; + priv->sensor[1].p2_calib_offset = -6; + priv->sensor[2].p1_calib_offset = 0; + priv->sensor[2].p2_calib_offset = 0; + priv->sensor[3].p1_calib_offset = -9; + priv->sensor[3].p2_calib_offset = -9; + priv->sensor[4].p1_calib_offset = -8; + priv->sensor[4].p2_calib_offset = -10; + + return init_common(priv); +} + +static int __init init_8939(struct tsens_priv *priv) { + priv->sensor[0].slope = 2911; + priv->sensor[1].slope = 2789; + priv->sensor[2].slope = 2906; + priv->sensor[3].slope = 2763; + priv->sensor[4].slope = 2922; + priv->sensor[5].slope = 2867; + priv->sensor[6].slope = 2833; + priv->sensor[7].slope = 2838; + priv->sensor[8].slope = 2840; + /* priv->sensor[9].slope = 2852; */ + + return init_common(priv); +} + +static int __init init_9607(struct tsens_priv *priv) +{ + int i; + + for (i = 0; i < priv->num_sensors; ++i) + priv->sensor[i].slope = 3000; + + priv->sensor[0].p1_calib_offset = 1; + priv->sensor[0].p2_calib_offset = 1; + priv->sensor[1].p1_calib_offset = -4; + priv->sensor[1].p2_calib_offset = -2; + priv->sensor[2].p1_calib_offset = 4; + priv->sensor[2].p2_calib_offset = 8; + priv->sensor[3].p1_calib_offset = -3; + priv->sensor[3].p2_calib_offset = -5; + priv->sensor[4].p1_calib_offset = -4; + priv->sensor[4].p2_calib_offset = -4; + + return init_common(priv); +} + +/* v0.1: 8226, 8909, 8916, 8939, 8974, 9607 */ + +static struct tsens_features tsens_v0_1_feat = { + .ver_major = VER_0_1, + .crit_int = 0, + .combo_int = 0, + .adc = 1, + .srot_split = 1, + .max_sensors = 11, + .trip_min_temp = -40000, + .trip_max_temp = 120000, +}; + +static const struct reg_field tsens_v0_1_regfields[MAX_REGFIELDS] = { + /* ----- SROT ------ */ + /* No VERSION information */ + + /* CTRL_OFFSET */ + [TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0), + [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1), + + /* ----- TM ------ */ + /* INTERRUPT ENABLE */ + [INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 0), + + /* UPPER/LOWER TEMPERATURE THRESHOLDS */ + REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 0, 9), + REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10, 19), + + /* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */ + REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20, 20), + REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21, 21), + + /* NO CRITICAL INTERRUPT SUPPORT on v0.1 */ + + /* Sn_STATUS */ + REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 9), + /* No VALID field on v0.1 */ + /* xxx_STATUS bits: 1 == threshold violated */ + REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10, 10), + REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11), + REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12), + /* No CRITICAL field on v0.1 */ + REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13, 13), + + /* TRDY: 1=ready, 0=in progress */ + [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0), +}; + +static const struct tsens_ops ops_8226 = { + .init = init_8226, + .calibrate = tsens_calibrate_common, + .get_temp = get_temp_common, +}; + +struct tsens_plat_data data_8226 = { + .num_sensors = 6, + .ops = &ops_8226, + .feat = &tsens_v0_1_feat, + .fields = tsens_v0_1_regfields, +}; + +static const struct tsens_ops ops_8909 = { + .init = init_8909, + .calibrate = tsens_calibrate_common, + .get_temp = get_temp_common, +}; + +struct tsens_plat_data data_8909 = { + .num_sensors = 5, + .ops = &ops_8909, + .feat = &tsens_v0_1_feat, + .fields = tsens_v0_1_regfields, +}; + +static const struct tsens_ops ops_8916 = { + .init = init_common, + .calibrate = calibrate_8916, + .get_temp = get_temp_common, +}; + +struct tsens_plat_data data_8916 = { + .num_sensors = 5, + .ops = &ops_8916, + .hw_ids = (unsigned int []){0, 1, 2, 4, 5 }, + + .feat = &tsens_v0_1_feat, + .fields = tsens_v0_1_regfields, +}; + +static const struct tsens_ops ops_8939 = { + .init = init_8939, + .calibrate = tsens_calibrate_common, + .get_temp = get_temp_common, +}; + +struct tsens_plat_data data_8939 = { + .num_sensors = 9, + .ops = &ops_8939, + .hw_ids = (unsigned int []){ 0, 1, 2, 3, 5, 6, 7, 8, 9, /* 10 */ }, + + .feat = &tsens_v0_1_feat, + .fields = tsens_v0_1_regfields, +}; + +static const struct tsens_ops ops_8974 = { + .init = init_common, + .calibrate = calibrate_8974, + .get_temp = get_temp_common, +}; + +struct tsens_plat_data data_8974 = { + .num_sensors = 11, + .ops = &ops_8974, + .feat = &tsens_v0_1_feat, + .fields = tsens_v0_1_regfields, +}; + +static const struct tsens_ops ops_9607 = { + .init = init_9607, + .calibrate = tsens_calibrate_common, + .get_temp = get_temp_common, +}; + +struct tsens_plat_data data_9607 = { + .num_sensors = 5, + .ops = &ops_9607, + .feat = &tsens_v0_1_feat, + .fields = tsens_v0_1_regfields, +}; diff --git a/drivers/thermal/qcom/tsens-v1.c b/drivers/thermal/qcom/tsens-v1.c new file mode 100644 index 000000000..faa5d0078 --- /dev/null +++ b/drivers/thermal/qcom/tsens-v1.c @@ -0,0 +1,258 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2019, Linaro Limited + */ + +#include <linux/bitops.h> +#include <linux/regmap.h> +#include <linux/delay.h> +#include <linux/slab.h> +#include "tsens.h" + +/* ----- SROT ------ */ +#define SROT_HW_VER_OFF 0x0000 +#define SROT_CTRL_OFF 0x0004 + +/* ----- TM ------ */ +#define TM_INT_EN_OFF 0x0000 +#define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF 0x0004 +#define TM_Sn_STATUS_OFF 0x0044 +#define TM_TRDY_OFF 0x0084 +#define TM_HIGH_LOW_INT_STATUS_OFF 0x0088 +#define TM_HIGH_LOW_Sn_INT_THRESHOLD_OFF 0x0090 + +static struct tsens_legacy_calibration_format tsens_qcs404_nvmem = { + .base_len = 8, + .base_shift = 2, + .sp_len = 6, + .mode = { 4, 0 }, + .invalid = { 4, 2 }, + .base = { { 4, 3 }, { 4, 11 } }, + .sp = { + { { 0, 0 }, { 0, 6 } }, + { { 0, 12 }, { 0, 18 } }, + { { 0, 24 }, { 0, 30 } }, + { { 1, 4 }, { 1, 10 } }, + { { 1, 16 }, { 1, 22 } }, + { { 2, 0 }, { 2, 6 } }, + { { 2, 12 }, { 2, 18 } }, + { { 2, 24 }, { 2, 30 } }, + { { 3, 4 }, { 3, 10 } }, + { { 3, 16 }, { 3, 22 } }, + }, +}; + +static int calibrate_v1(struct tsens_priv *priv) +{ + u32 p1[10], p2[10]; + u32 *qfprom_cdata; + int mode, ret; + + ret = tsens_calibrate_common(priv); + if (!ret) + return 0; + + qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib"); + if (IS_ERR(qfprom_cdata)) + return PTR_ERR(qfprom_cdata); + + mode = tsens_read_calibration_legacy(priv, &tsens_qcs404_nvmem, + p1, p2, + qfprom_cdata, NULL); + + compute_intercept_slope(priv, p1, p2, mode); + kfree(qfprom_cdata); + + return 0; +} + +/* v1.x: msm8956,8976,qcs404,405 */ + +static struct tsens_features tsens_v1_feat = { + .ver_major = VER_1_X, + .crit_int = 0, + .combo_int = 0, + .adc = 1, + .srot_split = 1, + .max_sensors = 11, + .trip_min_temp = -40000, + .trip_max_temp = 120000, +}; + +static struct tsens_features tsens_v1_no_rpm_feat = { + .ver_major = VER_1_X_NO_RPM, + .crit_int = 0, + .combo_int = 0, + .adc = 1, + .srot_split = 1, + .max_sensors = 11, + .trip_min_temp = -40000, + .trip_max_temp = 120000, +}; + +static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = { + /* ----- SROT ------ */ + /* VERSION */ + [VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31), + [VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27), + [VER_STEP] = REG_FIELD(SROT_HW_VER_OFF, 0, 15), + /* CTRL_OFFSET */ + [TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0), + [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1), + [SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 13), + + /* ----- TM ------ */ + /* INTERRUPT ENABLE */ + [INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 0), + + /* UPPER/LOWER TEMPERATURE THRESHOLDS */ + REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 0, 9), + REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10, 19), + + /* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */ + REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20, 20), + REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21, 21), + [LOW_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 0, 0), + [LOW_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 1, 1), + [LOW_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 2, 2), + [LOW_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 3, 3), + [LOW_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 4, 4), + [LOW_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 5, 5), + [LOW_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 6, 6), + [LOW_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 7, 7), + [UP_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 8, 8), + [UP_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 9, 9), + [UP_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 10, 10), + [UP_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 11, 11), + [UP_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 12, 12), + [UP_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 13, 13), + [UP_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 14, 14), + [UP_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 15, 15), + + /* NO CRITICAL INTERRUPT SUPPORT on v1 */ + + /* Sn_STATUS */ + REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 9), + REG_FIELD_FOR_EACH_SENSOR11(VALID, TM_Sn_STATUS_OFF, 14, 14), + /* xxx_STATUS bits: 1 == threshold violated */ + REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10, 10), + REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11), + REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12), + /* No CRITICAL field on v1.x */ + REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13, 13), + + /* TRDY: 1=ready, 0=in progress */ + [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0), +}; + +static int __init init_8956(struct tsens_priv *priv) { + priv->sensor[0].slope = 3313; + priv->sensor[1].slope = 3275; + priv->sensor[2].slope = 3320; + priv->sensor[3].slope = 3246; + priv->sensor[4].slope = 3279; + priv->sensor[5].slope = 3257; + priv->sensor[6].slope = 3234; + priv->sensor[7].slope = 3269; + priv->sensor[8].slope = 3255; + priv->sensor[9].slope = 3239; + priv->sensor[10].slope = 3286; + + return init_common(priv); +} + +static int __init init_tsens_v1_no_rpm(struct tsens_priv *priv) +{ + int i, ret; + u32 mask = 0; + + ret = init_common(priv); + if (ret < 0) { + dev_err(priv->dev, "Init common failed %d\n", ret); + return ret; + } + + ret = regmap_field_write(priv->rf[TSENS_SW_RST], 1); + if (ret) { + dev_err(priv->dev, "Reset failed\n"); + return ret; + } + + for (i = 0; i < priv->num_sensors; i++) + mask |= BIT(priv->sensor[i].hw_id); + + ret = regmap_field_update_bits(priv->rf[SENSOR_EN], mask, mask); + if (ret) { + dev_err(priv->dev, "Sensor Enable failed\n"); + return ret; + } + + ret = regmap_field_write(priv->rf[TSENS_EN], 1); + if (ret) { + dev_err(priv->dev, "Enable failed\n"); + return ret; + } + + ret = regmap_field_write(priv->rf[TSENS_SW_RST], 0); + + return ret; +} + +static const struct tsens_ops ops_generic_v1 = { + .init = init_common, + .calibrate = calibrate_v1, + .get_temp = get_temp_tsens_valid, +}; + +struct tsens_plat_data data_tsens_v1 = { + .ops = &ops_generic_v1, + .feat = &tsens_v1_feat, + .fields = tsens_v1_regfields, +}; + +static const struct tsens_ops ops_common = { + .init = init_common, + .calibrate = tsens_calibrate_common, + .get_temp = get_temp_tsens_valid, +}; + +struct tsens_plat_data data_8937 = { + .num_sensors = 11, + .ops = &ops_common, + .feat = &tsens_v1_feat, + .fields = tsens_v1_regfields, +}; + +static const struct tsens_ops ops_8956 = { + .init = init_8956, + .calibrate = tsens_calibrate_common, + .get_temp = get_temp_tsens_valid, +}; + +struct tsens_plat_data data_8956 = { + .num_sensors = 11, + .ops = &ops_8956, + .feat = &tsens_v1_feat, + .fields = tsens_v1_regfields, +}; + +struct tsens_plat_data data_8976 = { + .num_sensors = 11, + .ops = &ops_common, + .feat = &tsens_v1_feat, + .fields = tsens_v1_regfields, +}; + +static const struct tsens_ops ops_ipq5018 = { + .init = init_tsens_v1_no_rpm, + .calibrate = tsens_calibrate_common, + .get_temp = get_temp_tsens_valid, +}; + +const struct tsens_plat_data data_ipq5018 = { + .num_sensors = 5, + .ops = &ops_ipq5018, + .hw_ids = (unsigned int []){0, 1, 2, 3, 4}, + .feat = &tsens_v1_no_rpm_feat, + .fields = tsens_v1_regfields, +}; diff --git a/drivers/thermal/qcom/tsens-v2.c b/drivers/thermal/qcom/tsens-v2.c new file mode 100644 index 000000000..2ee117aa9 --- /dev/null +++ b/drivers/thermal/qcom/tsens-v2.c @@ -0,0 +1,316 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2015, The Linux Foundation. All rights reserved. + * Copyright (c) 2018, Linaro Limited + */ + +#include <linux/bitfield.h> +#include <linux/bitops.h> +#include <linux/nvmem-consumer.h> +#include <linux/regmap.h> +#include "tsens.h" + +/* ----- SROT ------ */ +#define SROT_HW_VER_OFF 0x0000 +#define SROT_CTRL_OFF 0x0004 +#define SROT_MEASURE_PERIOD 0x0008 +#define SROT_Sn_CONVERSION 0x0060 +#define V2_SHIFT_DEFAULT 0x0003 +#define V2_SLOPE_DEFAULT 0x0cd0 +#define V2_CZERO_DEFAULT 0x016a +#define ONE_PT_SLOPE 0x0cd0 +#define TWO_PT_SHIFTED_GAIN 921600 +#define ONE_PT_CZERO_CONST 94 +#define SW_RST_DEASSERT 0x0 +#define SW_RST_ASSERT 0x1 +#define MEASURE_PERIOD_2mSEC 0x1 +#define RESULT_FORMAT_TEMP 0x1 +#define TSENS_ENABLE 0x1 +#define SENSOR_CONVERSION(n) (((n) * 4) + SROT_Sn_CONVERSION) +#define CONVERSION_SHIFT_MASK GENMASK(24, 23) +#define CONVERSION_SLOPE_MASK GENMASK(22, 10) +#define CONVERSION_CZERO_MASK GENMASK(9, 0) + +/* ----- TM ------ */ +#define TM_INT_EN_OFF 0x0004 +#define TM_UPPER_LOWER_INT_STATUS_OFF 0x0008 +#define TM_UPPER_LOWER_INT_CLEAR_OFF 0x000c +#define TM_UPPER_LOWER_INT_MASK_OFF 0x0010 +#define TM_CRITICAL_INT_STATUS_OFF 0x0014 +#define TM_CRITICAL_INT_CLEAR_OFF 0x0018 +#define TM_CRITICAL_INT_MASK_OFF 0x001c +#define TM_Sn_UPPER_LOWER_THRESHOLD_OFF 0x0020 +#define TM_Sn_CRITICAL_THRESHOLD_OFF 0x0060 +#define TM_Sn_STATUS_OFF 0x00a0 +#define TM_TRDY_OFF 0x00e4 +#define TM_WDOG_LOG_OFF 0x013c + +/* v2.x: 8996, 8998, sdm845 */ + +static struct tsens_features tsens_v2_feat = { + .ver_major = VER_2_X, + .crit_int = 1, + .combo_int = 0, + .adc = 0, + .srot_split = 1, + .max_sensors = 16, + .trip_min_temp = -40000, + .trip_max_temp = 120000, +}; + +static struct tsens_features ipq8074_feat = { + .ver_major = VER_2_X, + .crit_int = 1, + .combo_int = 1, + .adc = 0, + .srot_split = 1, + .max_sensors = 16, + .trip_min_temp = 0, + .trip_max_temp = 204000, +}; + +static struct tsens_features ipq5332_feat = { + .ver_major = VER_2_X_NO_RPM, + .crit_int = 1, + .combo_int = 1, + .adc = 0, + .srot_split = 1, + .max_sensors = 16, + .trip_min_temp = 0, + .trip_max_temp = 204000, +}; + +static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = { + /* ----- SROT ------ */ + /* VERSION */ + [VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31), + [VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27), + [VER_STEP] = REG_FIELD(SROT_HW_VER_OFF, 0, 15), + /* CTRL_OFF */ + [TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0), + [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1), + [SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 18), + [CODE_OR_TEMP] = REG_FIELD(SROT_CTRL_OFF, 21, 21), + + [MAIN_MEASURE_PERIOD] = REG_FIELD(SROT_MEASURE_PERIOD, 0, 7), + + /* ----- TM ------ */ + /* INTERRUPT ENABLE */ + /* v2 has separate enables for UPPER/LOWER/CRITICAL interrupts */ + [INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 2), + + /* TEMPERATURE THRESHOLDS */ + REG_FIELD_FOR_EACH_SENSOR16(LOW_THRESH, TM_Sn_UPPER_LOWER_THRESHOLD_OFF, 0, 11), + REG_FIELD_FOR_EACH_SENSOR16(UP_THRESH, TM_Sn_UPPER_LOWER_THRESHOLD_OFF, 12, 23), + REG_FIELD_FOR_EACH_SENSOR16(CRIT_THRESH, TM_Sn_CRITICAL_THRESHOLD_OFF, 0, 11), + + /* INTERRUPTS [CLEAR/STATUS/MASK] */ + REG_FIELD_SPLIT_BITS_0_15(LOW_INT_STATUS, TM_UPPER_LOWER_INT_STATUS_OFF), + REG_FIELD_SPLIT_BITS_0_15(LOW_INT_CLEAR, TM_UPPER_LOWER_INT_CLEAR_OFF), + REG_FIELD_SPLIT_BITS_0_15(LOW_INT_MASK, TM_UPPER_LOWER_INT_MASK_OFF), + REG_FIELD_SPLIT_BITS_16_31(UP_INT_STATUS, TM_UPPER_LOWER_INT_STATUS_OFF), + REG_FIELD_SPLIT_BITS_16_31(UP_INT_CLEAR, TM_UPPER_LOWER_INT_CLEAR_OFF), + REG_FIELD_SPLIT_BITS_16_31(UP_INT_MASK, TM_UPPER_LOWER_INT_MASK_OFF), + REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_STATUS, TM_CRITICAL_INT_STATUS_OFF), + REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_CLEAR, TM_CRITICAL_INT_CLEAR_OFF), + REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_MASK, TM_CRITICAL_INT_MASK_OFF), + + /* WATCHDOG on v2.3 or later */ + [WDOG_BARK_STATUS] = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 31, 31), + [WDOG_BARK_CLEAR] = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF, 31, 31), + [WDOG_BARK_MASK] = REG_FIELD(TM_CRITICAL_INT_MASK_OFF, 31, 31), + [CC_MON_STATUS] = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 30, 30), + [CC_MON_CLEAR] = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF, 30, 30), + [CC_MON_MASK] = REG_FIELD(TM_CRITICAL_INT_MASK_OFF, 30, 30), + [WDOG_BARK_COUNT] = REG_FIELD(TM_WDOG_LOG_OFF, 0, 7), + + /* Sn_STATUS */ + REG_FIELD_FOR_EACH_SENSOR16(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 11), + REG_FIELD_FOR_EACH_SENSOR16(VALID, TM_Sn_STATUS_OFF, 21, 21), + /* xxx_STATUS bits: 1 == threshold violated */ + REG_FIELD_FOR_EACH_SENSOR16(MIN_STATUS, TM_Sn_STATUS_OFF, 16, 16), + REG_FIELD_FOR_EACH_SENSOR16(LOWER_STATUS, TM_Sn_STATUS_OFF, 17, 17), + REG_FIELD_FOR_EACH_SENSOR16(UPPER_STATUS, TM_Sn_STATUS_OFF, 18, 18), + REG_FIELD_FOR_EACH_SENSOR16(CRITICAL_STATUS, TM_Sn_STATUS_OFF, 19, 19), + REG_FIELD_FOR_EACH_SENSOR16(MAX_STATUS, TM_Sn_STATUS_OFF, 20, 20), + + /* TRDY: 1=ready, 0=in progress */ + [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0), +}; + +static int tsens_v2_calibrate_sensor(struct device *dev, struct tsens_sensor *sensor, + struct regmap *map, u32 mode, u32 base0, u32 base1) +{ + u32 shift = V2_SHIFT_DEFAULT; + u32 slope = V2_SLOPE_DEFAULT; + u32 czero = V2_CZERO_DEFAULT; + char name[20]; + u32 val; + int ret; + + /* Read offset value */ + ret = snprintf(name, sizeof(name), "tsens_sens%d_off", sensor->hw_id); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(dev, name, &sensor->offset); + if (ret) + return ret; + + /* Based on calib mode, program SHIFT, SLOPE and CZERO */ + switch (mode) { + case TWO_PT_CALIB: + slope = (TWO_PT_SHIFTED_GAIN / (base1 - base0)); + + czero = (base0 + sensor->offset - ((base1 - base0) / 3)); + + break; + case ONE_PT_CALIB2: + czero = base0 + sensor->offset - ONE_PT_CZERO_CONST; + + slope = ONE_PT_SLOPE; + + break; + default: + dev_dbg(dev, "calibrationless mode\n"); + } + + val = FIELD_PREP(CONVERSION_SHIFT_MASK, shift) | + FIELD_PREP(CONVERSION_SLOPE_MASK, slope) | + FIELD_PREP(CONVERSION_CZERO_MASK, czero); + + regmap_write(map, SENSOR_CONVERSION(sensor->hw_id), val); + + return 0; +} + +static int tsens_v2_calibration(struct tsens_priv *priv) +{ + struct device *dev = priv->dev; + u32 mode, base0, base1; + int i, ret; + + if (priv->num_sensors > MAX_SENSORS) + return -EINVAL; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "mode", &mode); + if (ret == -ENOENT) + dev_warn(priv->dev, "Calibration data not present in DT\n"); + if (ret < 0) + return ret; + + dev_dbg(priv->dev, "calibration mode is %d\n", mode); + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "base0", &base0); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, "base1", &base1); + if (ret < 0) + return ret; + + /* Calibrate each sensor */ + for (i = 0; i < priv->num_sensors; i++) { + ret = tsens_v2_calibrate_sensor(dev, &priv->sensor[i], priv->srot_map, + mode, base0, base1); + if (ret < 0) + return ret; + } + + return 0; +} + +static int __init init_tsens_v2_no_rpm(struct tsens_priv *priv) +{ + struct device *dev = priv->dev; + int i, ret; + u32 val = 0; + + ret = init_common(priv); + if (ret < 0) + return ret; + + priv->rf[CODE_OR_TEMP] = devm_regmap_field_alloc(dev, priv->srot_map, + priv->fields[CODE_OR_TEMP]); + if (IS_ERR(priv->rf[CODE_OR_TEMP])) + return PTR_ERR(priv->rf[CODE_OR_TEMP]); + + priv->rf[MAIN_MEASURE_PERIOD] = devm_regmap_field_alloc(dev, priv->srot_map, + priv->fields[MAIN_MEASURE_PERIOD]); + if (IS_ERR(priv->rf[MAIN_MEASURE_PERIOD])) + return PTR_ERR(priv->rf[MAIN_MEASURE_PERIOD]); + + regmap_field_write(priv->rf[TSENS_SW_RST], SW_RST_ASSERT); + + regmap_field_write(priv->rf[MAIN_MEASURE_PERIOD], MEASURE_PERIOD_2mSEC); + + /* Enable available sensors */ + for (i = 0; i < priv->num_sensors; i++) + val |= 1 << priv->sensor[i].hw_id; + + regmap_field_write(priv->rf[SENSOR_EN], val); + + /* Select temperature format, unit is deci-Celsius */ + regmap_field_write(priv->rf[CODE_OR_TEMP], RESULT_FORMAT_TEMP); + + regmap_field_write(priv->rf[TSENS_SW_RST], SW_RST_DEASSERT); + + regmap_field_write(priv->rf[TSENS_EN], TSENS_ENABLE); + + return 0; +} + +static const struct tsens_ops ops_generic_v2 = { + .init = init_common, + .get_temp = get_temp_tsens_valid, +}; + +struct tsens_plat_data data_tsens_v2 = { + .ops = &ops_generic_v2, + .feat = &tsens_v2_feat, + .fields = tsens_v2_regfields, +}; + +struct tsens_plat_data data_ipq8074 = { + .ops = &ops_generic_v2, + .feat = &ipq8074_feat, + .fields = tsens_v2_regfields, +}; + +static const struct tsens_ops ops_ipq5332 = { + .init = init_tsens_v2_no_rpm, + .get_temp = get_temp_tsens_valid, + .calibrate = tsens_v2_calibration, +}; + +const struct tsens_plat_data data_ipq5332 = { + .num_sensors = 5, + .ops = &ops_ipq5332, + .hw_ids = (unsigned int []){11, 12, 13, 14, 15}, + .feat = &ipq5332_feat, + .fields = tsens_v2_regfields, +}; + +const struct tsens_plat_data data_ipq5424 = { + .num_sensors = 7, + .ops = &ops_ipq5332, + .hw_ids = (unsigned int []){9, 10, 11, 12, 13, 14, 15}, + .feat = &ipq5332_feat, + .fields = tsens_v2_regfields, +}; + +/* Kept around for backward compatibility with old msm8996.dtsi */ +struct tsens_plat_data data_8996 = { + .num_sensors = 13, + .ops = &ops_generic_v2, + .feat = &tsens_v2_feat, + .fields = tsens_v2_regfields, +}; + +/* Do not enable wakeup capable interrupts for automotive platforms */ +struct tsens_plat_data data_automotive_v2 = { + .ops = &ops_generic_v2, + .feat = &tsens_v2_feat, + .fields = tsens_v2_regfields, + .no_irq_wake = true, +}; diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c new file mode 100644 index 000000000..b5ec70201 --- /dev/null +++ b/drivers/thermal/qcom/tsens.c @@ -0,0 +1,1478 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2015, The Linux Foundation. All rights reserved. + * Copyright (c) 2019, 2020, Linaro Ltd. + */ + +#include <linux/debugfs.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/nvmem-consumer.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/mfd/syscon.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/suspend.h> +#include <linux/thermal.h> +#include "../thermal_hwmon.h" +#include "tsens.h" + +/** + * struct tsens_irq_data - IRQ status and temperature violations + * @up_viol: upper threshold violated + * @up_thresh: upper threshold temperature value + * @up_irq_mask: mask register for upper threshold irqs + * @up_irq_clear: clear register for upper threshold irqs + * @low_viol: lower threshold violated + * @low_thresh: lower threshold temperature value + * @low_irq_mask: mask register for lower threshold irqs + * @low_irq_clear: clear register for lower threshold irqs + * @crit_viol: critical threshold violated + * @crit_thresh: critical threshold temperature value + * @crit_irq_mask: mask register for critical threshold irqs + * @crit_irq_clear: clear register for critical threshold irqs + * + * Structure containing data about temperature threshold settings and + * irq status if they were violated. + */ +struct tsens_irq_data { + u32 up_viol; + int up_thresh; + u32 up_irq_mask; + u32 up_irq_clear; + u32 low_viol; + int low_thresh; + u32 low_irq_mask; + u32 low_irq_clear; + u32 crit_viol; + u32 crit_thresh; + u32 crit_irq_mask; + u32 crit_irq_clear; +}; + +char *qfprom_read(struct device *dev, const char *cname) +{ + struct nvmem_cell *cell; + ssize_t data; + char *ret; + + cell = nvmem_cell_get(dev, cname); + if (IS_ERR(cell)) + return ERR_CAST(cell); + + ret = nvmem_cell_read(cell, &data); + nvmem_cell_put(cell); + + return ret; +} + +int tsens_read_calibration(struct tsens_priv *priv, int shift, u32 *p1, u32 *p2, bool backup) +{ + u32 mode; + u32 base1, base2; + char name[] = "sXX_pY_backup"; /* s10_p1_backup */ + int i, ret; + + if (priv->num_sensors > MAX_SENSORS) + return -EINVAL; + + ret = snprintf(name, sizeof(name), "mode%s", backup ? "_backup" : ""); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &mode); + if (ret == -ENOENT) + dev_warn(priv->dev, "Please migrate to separate nvmem cells for calibration data\n"); + if (ret < 0) + return ret; + + dev_dbg(priv->dev, "calibration mode is %d\n", mode); + + ret = snprintf(name, sizeof(name), "base1%s", backup ? "_backup" : ""); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &base1); + if (ret < 0) + return ret; + + ret = snprintf(name, sizeof(name), "base2%s", backup ? "_backup" : ""); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &base2); + if (ret < 0) + return ret; + + for (i = 0; i < priv->num_sensors; i++) { + ret = snprintf(name, sizeof(name), "s%d_p1%s", priv->sensor[i].hw_id, + backup ? "_backup" : ""); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &p1[i]); + if (ret) + return ret; + + ret = snprintf(name, sizeof(name), "s%d_p2%s", priv->sensor[i].hw_id, + backup ? "_backup" : ""); + if (ret < 0) + return ret; + + ret = nvmem_cell_read_variable_le_u32(priv->dev, name, &p2[i]); + if (ret) + return ret; + } + + switch (mode) { + case ONE_PT_CALIB: + for (i = 0; i < priv->num_sensors; i++) + p1[i] = p1[i] + (base1 << shift); + break; + case TWO_PT_CALIB: + case TWO_PT_CALIB_NO_OFFSET: + for (i = 0; i < priv->num_sensors; i++) + p2[i] = (p2[i] + base2) << shift; + fallthrough; + case ONE_PT_CALIB2: + case ONE_PT_CALIB2_NO_OFFSET: + for (i = 0; i < priv->num_sensors; i++) + p1[i] = (p1[i] + base1) << shift; + break; + default: + dev_dbg(priv->dev, "calibrationless mode\n"); + for (i = 0; i < priv->num_sensors; i++) { + p1[i] = 500; + p2[i] = 780; + } + } + + /* Apply calibration offset workaround except for _NO_OFFSET modes */ + switch (mode) { + case TWO_PT_CALIB: + for (i = 0; i < priv->num_sensors; i++) + p2[i] += priv->sensor[i].p2_calib_offset; + fallthrough; + case ONE_PT_CALIB2: + for (i = 0; i < priv->num_sensors; i++) + p1[i] += priv->sensor[i].p1_calib_offset; + break; + } + + return mode; +} + +int tsens_calibrate_nvmem(struct tsens_priv *priv, int shift) +{ + u32 p1[MAX_SENSORS], p2[MAX_SENSORS]; + int mode; + + mode = tsens_read_calibration(priv, shift, p1, p2, false); + if (mode < 0) + return mode; + + compute_intercept_slope(priv, p1, p2, mode); + + return 0; +} + +int tsens_calibrate_common(struct tsens_priv *priv) +{ + return tsens_calibrate_nvmem(priv, 2); +} + +static u32 tsens_read_cell(const struct tsens_single_value *cell, u8 len, u32 *data0, u32 *data1) +{ + u32 val; + u32 *data = cell->blob ? data1 : data0; + + if (cell->shift + len <= 32) { + val = data[cell->idx] >> cell->shift; + } else { + u8 part = 32 - cell->shift; + + val = data[cell->idx] >> cell->shift; + val |= data[cell->idx + 1] << part; + } + + return val & ((1 << len) - 1); +} + +int tsens_read_calibration_legacy(struct tsens_priv *priv, + const struct tsens_legacy_calibration_format *format, + u32 *p1, u32 *p2, + u32 *cdata0, u32 *cdata1) +{ + u32 mode, invalid; + u32 base1, base2; + int i; + + mode = tsens_read_cell(&format->mode, 2, cdata0, cdata1); + invalid = tsens_read_cell(&format->invalid, 1, cdata0, cdata1); + if (invalid) + mode = NO_PT_CALIB; + dev_dbg(priv->dev, "calibration mode is %d\n", mode); + + base1 = tsens_read_cell(&format->base[0], format->base_len, cdata0, cdata1); + base2 = tsens_read_cell(&format->base[1], format->base_len, cdata0, cdata1); + + for (i = 0; i < priv->num_sensors; i++) { + p1[i] = tsens_read_cell(&format->sp[i][0], format->sp_len, cdata0, cdata1); + p2[i] = tsens_read_cell(&format->sp[i][1], format->sp_len, cdata0, cdata1); + } + + switch (mode) { + case ONE_PT_CALIB: + for (i = 0; i < priv->num_sensors; i++) + p1[i] = p1[i] + (base1 << format->base_shift); + break; + case TWO_PT_CALIB: + for (i = 0; i < priv->num_sensors; i++) + p2[i] = (p2[i] + base2) << format->base_shift; + fallthrough; + case ONE_PT_CALIB2: + for (i = 0; i < priv->num_sensors; i++) + p1[i] = (p1[i] + base1) << format->base_shift; + break; + default: + dev_dbg(priv->dev, "calibrationless mode\n"); + for (i = 0; i < priv->num_sensors; i++) { + p1[i] = 500; + p2[i] = 780; + } + } + + return mode; +} + +/* + * Use this function on devices where slope and offset calculations + * depend on calibration data read from qfprom. On others the slope + * and offset values are derived from tz->tzp->slope and tz->tzp->offset + * resp. + */ +void compute_intercept_slope(struct tsens_priv *priv, u32 *p1, + u32 *p2, u32 mode) +{ + int i; + int num, den; + + for (i = 0; i < priv->num_sensors; i++) { + dev_dbg(priv->dev, + "%s: sensor%d - data_point1:%#x data_point2:%#x\n", + __func__, i, p1[i], p2 ? p2[i] : 0); + + if (!priv->sensor[i].slope) + priv->sensor[i].slope = SLOPE_DEFAULT; + if (mode == TWO_PT_CALIB || mode == TWO_PT_CALIB_NO_OFFSET) { + /* + * slope (m) = adc_code2 - adc_code1 (y2 - y1)/ + * temp_120_degc - temp_30_degc (x2 - x1) + */ + num = p2[i] - p1[i]; + num *= SLOPE_FACTOR; + den = CAL_DEGC_PT2 - CAL_DEGC_PT1; + priv->sensor[i].slope = num / den; + } + + priv->sensor[i].offset = (p1[i] * SLOPE_FACTOR) - + (CAL_DEGC_PT1 * + priv->sensor[i].slope); + dev_dbg(priv->dev, "%s: offset:%d\n", __func__, + priv->sensor[i].offset); + } +} + +static inline u32 degc_to_code(int degc, const struct tsens_sensor *s) +{ + u64 code = div_u64(((u64)degc * s->slope + s->offset), SLOPE_FACTOR); + + pr_debug("%s: raw_code: 0x%llx, degc:%d\n", __func__, code, degc); + return clamp_val(code, THRESHOLD_MIN_ADC_CODE, THRESHOLD_MAX_ADC_CODE); +} + +static inline int code_to_degc(u32 adc_code, const struct tsens_sensor *s) +{ + int degc, num, den; + + num = (adc_code * SLOPE_FACTOR) - s->offset; + den = s->slope; + + if (num > 0) + degc = num + (den / 2); + else if (num < 0) + degc = num - (den / 2); + else + degc = num; + + degc /= den; + + return degc; +} + +/** + * tsens_read_temp - Retrieve temperature readings from the hardware. + * @s: Pointer to sensor struct + * @field: Index into regmap_field array pointing to temperature data + * @temp: temperature in deciCelsius to be read from hardware + * + * This function handles temperature returned in ADC code or deciCelsius + * depending on IP version. + * + * Return: 0 on success, a negative errno will be returned in error cases + */ +static int tsens_read_temp(const struct tsens_sensor *s, int field, int *temp) +{ + struct tsens_priv *priv = s->priv; + int temp_val[MAX_READ_RETRY] = {0}; + u32 status; + int ret; + u32 last_temp_mask = GENMASK(priv->fields[LAST_TEMP_0].msb, + priv->fields[LAST_TEMP_0].lsb); + u32 valid_bit = priv->rf[VALID_0] ? BIT(priv->fields[VALID_0].lsb) : 0; + + for (int i = 0; i < MAX_READ_RETRY; i++) { + ret = regmap_read(priv->tm_map, priv->fields[field].reg, &status); + if (ret) + return ret; + + /* VER_0 doesn't have a VALID bit */ + if (!valid_bit) { + *temp = status & last_temp_mask; + return 0; + } + + temp_val[i] = status & last_temp_mask; + + if (status & valid_bit) { + *temp = temp_val[i]; + return 0; + } + } + + /* + * As per the HW guidelines, if none of the attempts observe a + * valid sample, a stable fallback value must be returned. If the + * first and second samples match, the second value is returned; + * otherwise, if the second and third samples match, the third + * value is returned. + */ + if (temp_val[0] == temp_val[1]) + *temp = temp_val[1]; + else if (temp_val[1] == temp_val[2]) + *temp = temp_val[2]; + else + return -EAGAIN; + + return 0; +} + +/** + * tsens_hw_to_mC - Return sign-extended temperature in mCelsius. + * @s: Pointer to sensor struct + * @temp: temperature in milliCelsius to be read from hardware + * + * This function handles temperature returned in ADC code or deciCelsius + * depending on IP version. + * + * Return: Temperature in milliCelsius on success, a negative errno will + * be returned in error cases + */ +static int tsens_hw_to_mC(const struct tsens_sensor *s, int temp) +{ + struct tsens_priv *priv = s->priv; + u32 resolution; + + resolution = priv->fields[LAST_TEMP_0].msb - + priv->fields[LAST_TEMP_0].lsb; + + /* Convert temperature from ADC code to milliCelsius */ + if (priv->feat->adc) + return code_to_degc(temp, s) * 1000; + + /* deciCelsius -> milliCelsius along with sign extension */ + return sign_extend32(temp, resolution) * 100; +} + +/** + * tsens_mC_to_hw - Convert temperature to hardware register value + * @s: Pointer to sensor struct + * @temp: temperature in milliCelsius to be programmed to hardware + * + * This function outputs the value to be written to hardware in ADC code + * or deciCelsius depending on IP version. + * + * Return: ADC code or temperature in deciCelsius. + */ +static int tsens_mC_to_hw(const struct tsens_sensor *s, int temp) +{ + struct tsens_priv *priv = s->priv; + + /* milliC to adc code */ + if (priv->feat->adc) + return degc_to_code(temp / 1000, s); + + /* milliC to deciC */ + return temp / 100; +} + +static inline enum tsens_ver tsens_version(struct tsens_priv *priv) +{ + return priv->feat->ver_major; +} + +static void tsens_set_interrupt_v1(struct tsens_priv *priv, u32 hw_id, + enum tsens_irq_type irq_type, bool enable) +{ + u32 index = 0; + + switch (irq_type) { + case UPPER: + index = UP_INT_CLEAR_0 + hw_id; + break; + case LOWER: + index = LOW_INT_CLEAR_0 + hw_id; + break; + case CRITICAL: + /* No critical interrupts before v2 */ + return; + } + regmap_field_write(priv->rf[index], enable ? 0 : 1); +} + +static void tsens_set_interrupt_v2(struct tsens_priv *priv, u32 hw_id, + enum tsens_irq_type irq_type, bool enable) +{ + u32 index_mask = 0, index_clear = 0; + + /* + * To enable the interrupt flag for a sensor: + * - clear the mask bit + * To disable the interrupt flag for a sensor: + * - Mask further interrupts for this sensor + * - Write 1 followed by 0 to clear the interrupt + */ + switch (irq_type) { + case UPPER: + index_mask = UP_INT_MASK_0 + hw_id; + index_clear = UP_INT_CLEAR_0 + hw_id; + break; + case LOWER: + index_mask = LOW_INT_MASK_0 + hw_id; + index_clear = LOW_INT_CLEAR_0 + hw_id; + break; + case CRITICAL: + index_mask = CRIT_INT_MASK_0 + hw_id; + index_clear = CRIT_INT_CLEAR_0 + hw_id; + break; + } + + if (enable) { + regmap_field_write(priv->rf[index_mask], 0); + } else { + regmap_field_write(priv->rf[index_mask], 1); + regmap_field_write(priv->rf[index_clear], 1); + regmap_field_write(priv->rf[index_clear], 0); + } +} + +/** + * tsens_set_interrupt - Set state of an interrupt + * @priv: Pointer to tsens controller private data + * @hw_id: Hardware ID aka. sensor number + * @irq_type: irq_type from enum tsens_irq_type + * @enable: false = disable, true = enable + * + * Call IP-specific function to set state of an interrupt + * + * Return: void + */ +static void tsens_set_interrupt(struct tsens_priv *priv, u32 hw_id, + enum tsens_irq_type irq_type, bool enable) +{ + dev_dbg(priv->dev, "[%u] %s: %s -> %s\n", hw_id, __func__, + irq_type ? ((irq_type == 1) ? "UP" : "CRITICAL") : "LOW", + enable ? "en" : "dis"); + if (tsens_version(priv) >= VER_2_X) + tsens_set_interrupt_v2(priv, hw_id, irq_type, enable); + else + tsens_set_interrupt_v1(priv, hw_id, irq_type, enable); +} + +/** + * tsens_threshold_violated - Check if a sensor temperature violated a preset threshold + * @priv: Pointer to tsens controller private data + * @hw_id: Hardware ID aka. sensor number + * @d: Pointer to irq state data + * + * Return: 0 if threshold was not violated, 1 if it was violated and negative + * errno in case of errors + */ +static int tsens_threshold_violated(struct tsens_priv *priv, u32 hw_id, + struct tsens_irq_data *d) +{ + int ret; + + ret = regmap_field_read(priv->rf[UPPER_STATUS_0 + hw_id], &d->up_viol); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[LOWER_STATUS_0 + hw_id], &d->low_viol); + if (ret) + return ret; + + if (priv->feat->crit_int) { + ret = regmap_field_read(priv->rf[CRITICAL_STATUS_0 + hw_id], + &d->crit_viol); + if (ret) + return ret; + } + + if (d->up_viol || d->low_viol || d->crit_viol) + return 1; + + return 0; +} + +static int tsens_read_irq_state(struct tsens_priv *priv, u32 hw_id, + const struct tsens_sensor *s, + struct tsens_irq_data *d) +{ + int ret; + + ret = regmap_field_read(priv->rf[UP_INT_CLEAR_0 + hw_id], &d->up_irq_clear); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[LOW_INT_CLEAR_0 + hw_id], &d->low_irq_clear); + if (ret) + return ret; + if (tsens_version(priv) >= VER_2_X) { + ret = regmap_field_read(priv->rf[UP_INT_MASK_0 + hw_id], &d->up_irq_mask); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[LOW_INT_MASK_0 + hw_id], &d->low_irq_mask); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[CRIT_INT_CLEAR_0 + hw_id], + &d->crit_irq_clear); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[CRIT_INT_MASK_0 + hw_id], + &d->crit_irq_mask); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[CRIT_THRESH_0 + hw_id], &d->crit_thresh); + if (ret) + return ret; + d->crit_thresh = tsens_hw_to_mC(s, d->crit_thresh); + } else { + /* No mask register on older TSENS */ + d->up_irq_mask = 0; + d->low_irq_mask = 0; + d->crit_irq_clear = 0; + d->crit_irq_mask = 0; + d->crit_thresh = 0; + } + + ret = regmap_field_read(priv->rf[UP_THRESH_0 + hw_id], &d->up_thresh); + if (ret) + return ret; + + d->up_thresh = tsens_hw_to_mC(s, d->up_thresh); + ret = regmap_field_read(priv->rf[LOW_THRESH_0 + hw_id], &d->low_thresh); + if (ret) + return ret; + + d->low_thresh = tsens_hw_to_mC(s, d->low_thresh); + + dev_dbg(priv->dev, "[%u] %s%s: status(%u|%u|%u) | clr(%u|%u|%u) | mask(%u|%u|%u)\n", + hw_id, __func__, + (d->up_viol || d->low_viol || d->crit_viol) ? "(V)" : "", + d->low_viol, d->up_viol, d->crit_viol, + d->low_irq_clear, d->up_irq_clear, d->crit_irq_clear, + d->low_irq_mask, d->up_irq_mask, d->crit_irq_mask); + dev_dbg(priv->dev, "[%u] %s%s: thresh: (%d:%d:%d)\n", hw_id, __func__, + (d->up_viol || d->low_viol || d->crit_viol) ? "(V)" : "", + d->low_thresh, d->up_thresh, d->crit_thresh); + + return 0; +} + +static inline u32 masked_irq(u32 hw_id, u32 mask, enum tsens_ver ver) +{ + if (ver >= VER_2_X) + return mask & (1 << hw_id); + + /* v1, v0.1 don't have a irq mask register */ + return 0; +} + +/** + * tsens_critical_irq_thread() - Threaded handler for critical interrupts + * @irq: irq number + * @data: tsens controller private data + * + * Check FSM watchdog bark status and clear if needed. + * Check all sensors to find ones that violated their critical threshold limits. + * Clear and then re-enable the interrupt. + * + * The level-triggered interrupt might deassert if the temperature returned to + * within the threshold limits by the time the handler got scheduled. We + * consider the irq to have been handled in that case. + * + * Return: IRQ_HANDLED + */ +static irqreturn_t tsens_critical_irq_thread(int irq, void *data) +{ + struct tsens_priv *priv = data; + struct tsens_irq_data d; + int temp, ret, i; + u32 wdog_status, wdog_count; + + if (priv->feat->has_watchdog) { + ret = regmap_field_read(priv->rf[WDOG_BARK_STATUS], + &wdog_status); + if (ret) + return ret; + + if (wdog_status) { + /* Clear WDOG interrupt */ + regmap_field_write(priv->rf[WDOG_BARK_CLEAR], 1); + regmap_field_write(priv->rf[WDOG_BARK_CLEAR], 0); + ret = regmap_field_read(priv->rf[WDOG_BARK_COUNT], + &wdog_count); + if (ret) + return ret; + if (wdog_count) + dev_dbg(priv->dev, "%s: watchdog count: %d\n", + __func__, wdog_count); + + /* Fall through to handle critical interrupts if any */ + } + } + + for (i = 0; i < priv->num_sensors; i++) { + const struct tsens_sensor *s = &priv->sensor[i]; + u32 hw_id = s->hw_id; + + if (!s->tzd) + continue; + if (!tsens_threshold_violated(priv, hw_id, &d)) + continue; + ret = get_temp_tsens_valid(s, &temp); + if (ret) { + dev_err(priv->dev, "[%u] %s: error reading sensor\n", + hw_id, __func__); + continue; + } + + tsens_read_irq_state(priv, hw_id, s, &d); + if (d.crit_viol && + !masked_irq(hw_id, d.crit_irq_mask, tsens_version(priv))) { + /* Mask critical interrupts, unused on Linux */ + tsens_set_interrupt(priv, hw_id, CRITICAL, false); + } + } + + return IRQ_HANDLED; +} + +/** + * tsens_irq_thread - Threaded interrupt handler for uplow interrupts + * @irq: irq number + * @data: tsens controller private data + * + * Check all sensors to find ones that violated their threshold limits. If the + * temperature is still outside the limits, call thermal_zone_device_update() to + * update the thresholds, else re-enable the interrupts. + * + * The level-triggered interrupt might deassert if the temperature returned to + * within the threshold limits by the time the handler got scheduled. We + * consider the irq to have been handled in that case. + * + * Return: IRQ_HANDLED + */ +static irqreturn_t tsens_irq_thread(int irq, void *data) +{ + struct tsens_priv *priv = data; + struct tsens_irq_data d; + int i; + + for (i = 0; i < priv->num_sensors; i++) { + const struct tsens_sensor *s = &priv->sensor[i]; + u32 hw_id = s->hw_id; + + if (!s->tzd) + continue; + if (!tsens_threshold_violated(priv, hw_id, &d)) + continue; + + thermal_zone_device_update(s->tzd, THERMAL_EVENT_UNSPECIFIED); + + if (tsens_version(priv) < VER_0_1) { + /* Constraint: There is only 1 interrupt control register for all + * 11 temperature sensor. So monitoring more than 1 sensor based + * on interrupts will yield inconsistent result. To overcome this + * issue we will monitor only sensor 0 which is the master sensor. + */ + break; + } + } + + return IRQ_HANDLED; +} + +/** + * tsens_combined_irq_thread() - Threaded interrupt handler for combined interrupts + * @irq: irq number + * @data: tsens controller private data + * + * Handle the combined interrupt as if it were 2 separate interrupts, so call the + * critical handler first and then the up/low one. + * + * Return: IRQ_HANDLED + */ +static irqreturn_t tsens_combined_irq_thread(int irq, void *data) +{ + irqreturn_t ret; + + ret = tsens_critical_irq_thread(irq, data); + if (ret != IRQ_HANDLED) + return ret; + + return tsens_irq_thread(irq, data); +} + +static int tsens_set_trips(struct thermal_zone_device *tz, int low, int high) +{ + struct tsens_sensor *s = thermal_zone_device_priv(tz); + struct tsens_priv *priv = s->priv; + struct device *dev = priv->dev; + struct tsens_irq_data d; + unsigned long flags; + int high_val, low_val, cl_high, cl_low; + u32 hw_id = s->hw_id; + + if (tsens_version(priv) < VER_0_1) { + /* Pre v0.1 IP had a single register for each type of interrupt + * and thresholds + */ + hw_id = 0; + } + + dev_dbg(dev, "[%u] %s: proposed thresholds: (%d:%d)\n", + hw_id, __func__, low, high); + + cl_high = clamp_val(high, priv->feat->trip_min_temp, priv->feat->trip_max_temp); + cl_low = clamp_val(low, priv->feat->trip_min_temp, priv->feat->trip_max_temp); + + high_val = tsens_mC_to_hw(s, cl_high); + low_val = tsens_mC_to_hw(s, cl_low); + + spin_lock_irqsave(&priv->ul_lock, flags); + + tsens_read_irq_state(priv, hw_id, s, &d); + + /* Write the new thresholds and clear the status */ + regmap_field_write(priv->rf[LOW_THRESH_0 + hw_id], low_val); + regmap_field_write(priv->rf[UP_THRESH_0 + hw_id], high_val); + tsens_set_interrupt(priv, hw_id, LOWER, true); + tsens_set_interrupt(priv, hw_id, UPPER, true); + + spin_unlock_irqrestore(&priv->ul_lock, flags); + + dev_dbg(dev, "[%u] %s: (%d:%d)->(%d:%d)\n", + hw_id, __func__, d.low_thresh, d.up_thresh, cl_low, cl_high); + + return 0; +} + +static int tsens_enable_irq(struct tsens_priv *priv) +{ + int ret; + int val = tsens_version(priv) >= VER_2_X ? 7 : 1; + + ret = regmap_field_write(priv->rf[INT_EN], val); + if (ret < 0) + dev_err(priv->dev, "%s: failed to enable interrupts\n", + __func__); + + return ret; +} + +static void tsens_disable_irq(struct tsens_priv *priv) +{ + regmap_field_write(priv->rf[INT_EN], 0); +} + +int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp) +{ + int hw_id = s->hw_id; + u32 temp_idx = LAST_TEMP_0 + hw_id; + int ret; + + ret = tsens_read_temp(s, temp_idx, temp); + if (!ret) + *temp = tsens_hw_to_mC(s, *temp); + + return ret; +} + +int get_temp_common(const struct tsens_sensor *s, int *temp) +{ + struct tsens_priv *priv = s->priv; + int hw_id = s->hw_id; + int last_temp = 0, ret, trdy; + unsigned long timeout; + + timeout = jiffies + usecs_to_jiffies(TIMEOUT_US); + do { + if (tsens_version(priv) == VER_0) { + ret = regmap_field_read(priv->rf[TRDY], &trdy); + if (ret) + return ret; + if (!trdy) + continue; + } + + ret = regmap_field_read(priv->rf[LAST_TEMP_0 + hw_id], &last_temp); + if (ret) + return ret; + + *temp = code_to_degc(last_temp, s) * 1000; + + return 0; + } while (time_before(jiffies, timeout)); + + return -ETIMEDOUT; +} + +#ifdef CONFIG_DEBUG_FS +static int dbg_sensors_show(struct seq_file *s, void *data) +{ + struct platform_device *pdev = s->private; + struct tsens_priv *priv = platform_get_drvdata(pdev); + int i; + + seq_printf(s, "max: %2d\nnum: %2d\n\n", + priv->feat->max_sensors, priv->num_sensors); + + seq_puts(s, " id slope offset\n--------------------------\n"); + for (i = 0; i < priv->num_sensors; i++) { + seq_printf(s, "%8d %8d %8d\n", priv->sensor[i].hw_id, + priv->sensor[i].slope, priv->sensor[i].offset); + } + + return 0; +} + +static int dbg_version_show(struct seq_file *s, void *data) +{ + struct platform_device *pdev = s->private; + struct tsens_priv *priv = platform_get_drvdata(pdev); + u32 maj_ver, min_ver, step_ver; + int ret; + + if (tsens_version(priv) > VER_0_1) { + ret = regmap_field_read(priv->rf[VER_MAJOR], &maj_ver); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[VER_MINOR], &min_ver); + if (ret) + return ret; + ret = regmap_field_read(priv->rf[VER_STEP], &step_ver); + if (ret) + return ret; + seq_printf(s, "%d.%d.%d\n", maj_ver, min_ver, step_ver); + } else { + seq_printf(s, "0.%d.0\n", priv->feat->ver_major); + } + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(dbg_version); +DEFINE_SHOW_ATTRIBUTE(dbg_sensors); + +static void tsens_debug_init(struct platform_device *pdev) +{ + struct tsens_priv *priv = platform_get_drvdata(pdev); + + priv->debug_root = debugfs_lookup("tsens", NULL); + if (!priv->debug_root) + priv->debug_root = debugfs_create_dir("tsens", NULL); + + /* A directory for each instance of the TSENS IP */ + priv->debug = debugfs_create_dir(dev_name(&pdev->dev), priv->debug_root); + debugfs_create_file("version", 0444, priv->debug, pdev, &dbg_version_fops); + debugfs_create_file("sensors", 0444, priv->debug, pdev, &dbg_sensors_fops); +} +#else +static inline void tsens_debug_init(struct platform_device *pdev) {} +#endif + +static const struct regmap_config tsens_config = { + .name = "tm", + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + +static const struct regmap_config tsens_srot_config = { + .name = "srot", + .reg_bits = 32, + .val_bits = 32, + .reg_stride = 4, +}; + +int __init init_common(struct tsens_priv *priv) +{ + void __iomem *tm_base, *srot_base; + struct device *dev = priv->dev; + u32 ver_minor; + struct resource *res; + u32 enabled; + int ret, i, j; + struct platform_device *op = of_find_device_by_node(priv->dev->of_node); + + if (!op) + return -EINVAL; + + if (op->num_resources > 1) { + /* DT with separate SROT and TM address space */ + priv->tm_offset = 0; + res = platform_get_resource(op, IORESOURCE_MEM, 1); + srot_base = devm_ioremap_resource(dev, res); + if (IS_ERR(srot_base)) { + ret = PTR_ERR(srot_base); + goto err_put_device; + } + + priv->srot_map = devm_regmap_init_mmio(dev, srot_base, + &tsens_srot_config); + if (IS_ERR(priv->srot_map)) { + ret = PTR_ERR(priv->srot_map); + goto err_put_device; + } + } else { + /* old DTs where SROT and TM were in a contiguous 2K block */ + priv->tm_offset = 0x1000; + } + + if (tsens_version(priv) >= VER_0_1) { + res = platform_get_resource(op, IORESOURCE_MEM, 0); + tm_base = devm_ioremap_resource(dev, res); + if (IS_ERR(tm_base)) { + ret = PTR_ERR(tm_base); + goto err_put_device; + } + + priv->tm_map = devm_regmap_init_mmio(dev, tm_base, &tsens_config); + } else { /* VER_0 share the same gcc regs using a syscon */ + struct device *parent = priv->dev->parent; + + if (parent) + priv->tm_map = syscon_node_to_regmap(parent->of_node); + } + + if (IS_ERR_OR_NULL(priv->tm_map)) { + if (!priv->tm_map) + ret = -ENODEV; + else + ret = PTR_ERR(priv->tm_map); + goto err_put_device; + } + + /* VER_0 have only tm_map */ + if (!priv->srot_map) + priv->srot_map = priv->tm_map; + + if (tsens_version(priv) > VER_0_1) { + for (i = VER_MAJOR; i <= VER_STEP; i++) { + priv->rf[i] = devm_regmap_field_alloc(dev, priv->srot_map, + priv->fields[i]); + if (IS_ERR(priv->rf[i])) { + ret = PTR_ERR(priv->rf[i]); + goto err_put_device; + } + } + ret = regmap_field_read(priv->rf[VER_MINOR], &ver_minor); + if (ret) + goto err_put_device; + } + + priv->rf[TSENS_EN] = devm_regmap_field_alloc(dev, priv->srot_map, + priv->fields[TSENS_EN]); + if (IS_ERR(priv->rf[TSENS_EN])) { + ret = PTR_ERR(priv->rf[TSENS_EN]); + goto err_put_device; + } + /* in VER_0 TSENS need to be explicitly enabled */ + if (tsens_version(priv) == VER_0) + regmap_field_write(priv->rf[TSENS_EN], 1); + + ret = regmap_field_read(priv->rf[TSENS_EN], &enabled); + if (ret) + goto err_put_device; + if (!enabled) { + switch (tsens_version(priv)) { + case VER_1_X_NO_RPM: + case VER_2_X_NO_RPM: + break; + default: + dev_err(dev, "%s: device not enabled\n", __func__); + ret = -ENODEV; + goto err_put_device; + } + } + + priv->rf[SENSOR_EN] = devm_regmap_field_alloc(dev, priv->srot_map, + priv->fields[SENSOR_EN]); + if (IS_ERR(priv->rf[SENSOR_EN])) { + ret = PTR_ERR(priv->rf[SENSOR_EN]); + goto err_put_device; + } + priv->rf[INT_EN] = devm_regmap_field_alloc(dev, priv->tm_map, + priv->fields[INT_EN]); + if (IS_ERR(priv->rf[INT_EN])) { + ret = PTR_ERR(priv->rf[INT_EN]); + goto err_put_device; + } + + priv->rf[TSENS_SW_RST] = + devm_regmap_field_alloc(dev, priv->srot_map, priv->fields[TSENS_SW_RST]); + if (IS_ERR(priv->rf[TSENS_SW_RST])) { + ret = PTR_ERR(priv->rf[TSENS_SW_RST]); + goto err_put_device; + } + + priv->rf[TRDY] = devm_regmap_field_alloc(dev, priv->tm_map, priv->fields[TRDY]); + if (IS_ERR(priv->rf[TRDY])) { + ret = PTR_ERR(priv->rf[TRDY]); + goto err_put_device; + } + + /* This loop might need changes if enum regfield_ids is reordered */ + for (j = LAST_TEMP_0; j <= UP_THRESH_15; j += 16) { + for (i = 0; i < priv->feat->max_sensors; i++) { + int idx = j + i; + + priv->rf[idx] = devm_regmap_field_alloc(dev, + priv->tm_map, + priv->fields[idx]); + if (IS_ERR(priv->rf[idx])) { + ret = PTR_ERR(priv->rf[idx]); + goto err_put_device; + } + } + } + + if (priv->feat->crit_int || tsens_version(priv) < VER_0_1) { + /* Loop might need changes if enum regfield_ids is reordered */ + for (j = CRITICAL_STATUS_0; j <= CRIT_THRESH_15; j += 16) { + for (i = 0; i < priv->feat->max_sensors; i++) { + int idx = j + i; + + priv->rf[idx] = + devm_regmap_field_alloc(dev, + priv->tm_map, + priv->fields[idx]); + if (IS_ERR(priv->rf[idx])) { + ret = PTR_ERR(priv->rf[idx]); + goto err_put_device; + } + } + } + } + + if (tsens_version(priv) >= VER_2_X && ver_minor > 2) { + /* Watchdog is present only on v2.3+ */ + priv->feat->has_watchdog = 1; + for (i = WDOG_BARK_STATUS; i <= CC_MON_MASK; i++) { + priv->rf[i] = devm_regmap_field_alloc(dev, priv->tm_map, + priv->fields[i]); + if (IS_ERR(priv->rf[i])) { + ret = PTR_ERR(priv->rf[i]); + goto err_put_device; + } + } + /* + * Watchdog is already enabled, unmask the bark. + * Disable cycle completion monitoring + */ + regmap_field_write(priv->rf[WDOG_BARK_MASK], 0); + regmap_field_write(priv->rf[CC_MON_MASK], 1); + } + + spin_lock_init(&priv->ul_lock); + + /* VER_0 interrupt doesn't need to be enabled */ + if (tsens_version(priv) >= VER_0_1) + tsens_enable_irq(priv); + +err_put_device: + put_device(&op->dev); + return ret; +} + +static int tsens_get_temp(struct thermal_zone_device *tz, int *temp) +{ + struct tsens_sensor *s = thermal_zone_device_priv(tz); + struct tsens_priv *priv = s->priv; + + return priv->ops->get_temp(s, temp); +} + +static int __maybe_unused tsens_suspend(struct device *dev) +{ + int ret = 0; + struct tsens_priv *priv = dev_get_drvdata(dev); + + if (priv->ops && priv->ops->suspend) { + ret = priv->ops->suspend(priv); + if (ret) + return ret; + } + + return tsens_suspend_common(priv); +} + +static int __maybe_unused tsens_resume(struct device *dev) +{ + int ret = 0; + struct tsens_priv *priv = dev_get_drvdata(dev); + + if (priv->ops && priv->ops->resume) { + ret = priv->ops->resume(priv); + if (ret) + return ret; + } + + return tsens_resume_common(priv); +} + +static SIMPLE_DEV_PM_OPS(tsens_pm_ops, tsens_suspend, tsens_resume); + +static const struct of_device_id tsens_table[] = { + { + .compatible = "qcom,ipq5018-tsens", + .data = &data_ipq5018, + }, { + .compatible = "qcom,ipq5332-tsens", + .data = &data_ipq5332, + }, { + .compatible = "qcom,ipq5424-tsens", + .data = &data_ipq5424, + }, { + .compatible = "qcom,ipq8064-tsens", + .data = &data_8960, + }, { + .compatible = "qcom,ipq8074-tsens", + .data = &data_ipq8074, + }, { + .compatible = "qcom,mdm9607-tsens", + .data = &data_9607, + }, { + .compatible = "qcom,msm8226-tsens", + .data = &data_8226, + }, { + .compatible = "qcom,msm8909-tsens", + .data = &data_8909, + }, { + .compatible = "qcom,msm8916-tsens", + .data = &data_8916, + }, { + .compatible = "qcom,msm8937-tsens", + .data = &data_8937, + }, { + .compatible = "qcom,msm8939-tsens", + .data = &data_8939, + }, { + .compatible = "qcom,msm8956-tsens", + .data = &data_8956, + }, { + .compatible = "qcom,msm8960-tsens", + .data = &data_8960, + }, { + .compatible = "qcom,msm8974-tsens", + .data = &data_8974, + }, { + .compatible = "qcom,msm8976-tsens", + .data = &data_8976, + }, { + .compatible = "qcom,msm8996-tsens", + .data = &data_8996, + }, { + .compatible = "qcom,tsens-v1", + .data = &data_tsens_v1, + }, { + .compatible = "qcom,tsens-v2", + .data = &data_tsens_v2, + }, { + .compatible = "qcom,sa8775p-tsens", + .data = &data_automotive_v2, + }, { + .compatible = "qcom,sa8255p-tsens", + .data = &data_automotive_v2, + }, + {} +}; +MODULE_DEVICE_TABLE(of, tsens_table); + +static const struct thermal_zone_device_ops tsens_of_ops = { + .get_temp = tsens_get_temp, + .set_trips = tsens_set_trips, +}; + +static int tsens_register_irq(struct tsens_priv *priv, char *irqname, + irq_handler_t thread_fn, int *irq_num) +{ + struct platform_device *pdev; + int ret, irq; + + pdev = of_find_device_by_node(priv->dev->of_node); + if (!pdev) + return -ENODEV; + + irq = platform_get_irq_byname(pdev, irqname); + if (irq < 0) { + ret = irq; + /* For old DTs with no IRQ defined */ + if (irq == -ENXIO) + ret = 0; + } else { + /* VER_0 interrupt is TRIGGER_RISING, VER_0_1 and up is ONESHOT */ + if (tsens_version(priv) == VER_0) + ret = devm_request_threaded_irq(&pdev->dev, irq, + thread_fn, NULL, + IRQF_TRIGGER_RISING, + dev_name(&pdev->dev), + priv); + else + ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, + thread_fn, IRQF_ONESHOT, + dev_name(&pdev->dev), + priv); + + if (!ret) + *irq_num = irq; + } + + put_device(&pdev->dev); + return ret; +} + +#ifdef CONFIG_SUSPEND +static int tsens_reinit(struct tsens_priv *priv) +{ + if (tsens_version(priv) >= VER_2_X) { + /* + * Re-enable the watchdog, unmask the bark. + * Disable cycle completion monitoring + */ + if (priv->feat->has_watchdog) { + regmap_field_write(priv->rf[WDOG_BARK_MASK], 0); + regmap_field_write(priv->rf[CC_MON_MASK], 1); + } + + /* Re-enable interrupts */ + tsens_enable_irq(priv); + } + + return 0; +} + +int tsens_suspend_common(struct tsens_priv *priv) +{ + if (!device_may_wakeup(priv->dev)) + return 0; + + if (priv->feat->combo_int) + enable_irq_wake(priv->combined_irq); + else { + enable_irq_wake(priv->uplow_irq); + if (priv->feat->crit_int) + enable_irq_wake(priv->crit_irq); + } + + return 0; +} + +int tsens_resume_common(struct tsens_priv *priv) +{ + if (pm_suspend_target_state == PM_SUSPEND_MEM) + tsens_reinit(priv); + + if (!device_may_wakeup(priv->dev)) + return 0; + + if (priv->feat->combo_int) + disable_irq_wake(priv->combined_irq); + else { + disable_irq_wake(priv->uplow_irq); + if (priv->feat->crit_int) + disable_irq_wake(priv->crit_irq); + } + + return 0; +} + +#endif /* !CONFIG_SUSPEND */ + +static int tsens_register(struct tsens_priv *priv) +{ + int i, ret; + struct thermal_zone_device *tzd; + + for (i = 0; i < priv->num_sensors; i++) { + priv->sensor[i].priv = priv; + tzd = devm_thermal_of_zone_register(priv->dev, priv->sensor[i].hw_id, + &priv->sensor[i], + &tsens_of_ops); + if (IS_ERR(tzd)) + continue; + priv->sensor[i].tzd = tzd; + if (priv->ops->enable) + priv->ops->enable(priv, i); + + devm_thermal_add_hwmon_sysfs(priv->dev, tzd); + } + + /* VER_0 require to set MIN and MAX THRESH + * These 2 regs are set using the: + * - CRIT_THRESH_0 for MAX THRESH hardcoded to 120°C + * - CRIT_THRESH_1 for MIN THRESH hardcoded to 0°C + */ + if (tsens_version(priv) < VER_0_1) { + regmap_field_write(priv->rf[CRIT_THRESH_0], + tsens_mC_to_hw(priv->sensor, 120000)); + + regmap_field_write(priv->rf[CRIT_THRESH_1], + tsens_mC_to_hw(priv->sensor, 0)); + } + + if (priv->feat->combo_int) { + ret = tsens_register_irq(priv, "combined", + tsens_combined_irq_thread, &priv->combined_irq); + } else { + ret = tsens_register_irq(priv, "uplow", tsens_irq_thread, + &priv->uplow_irq); + if (ret < 0) + return ret; + + if (priv->feat->crit_int) { + ret = tsens_register_irq(priv, "critical", + tsens_critical_irq_thread, + &priv->crit_irq); + } + } + + return ret; +} + +static int tsens_probe(struct platform_device *pdev) +{ + int ret, i; + struct device *dev; + struct device_node *np; + struct tsens_priv *priv; + const struct tsens_plat_data *data; + const struct of_device_id *id; + u32 num_sensors; + + if (pdev->dev.of_node) + dev = &pdev->dev; + else + dev = pdev->dev.parent; + + np = dev->of_node; + + id = of_match_node(tsens_table, np); + if (id) + data = id->data; + else + data = &data_8960; + + num_sensors = data->num_sensors; + + if (np) + of_property_read_u32(np, "#qcom,sensors", &num_sensors); + + if (num_sensors <= 0) { + dev_err(dev, "%s: invalid number of sensors\n", __func__); + return -EINVAL; + } + + priv = devm_kzalloc(dev, + struct_size(priv, sensor, num_sensors), + GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = dev; + priv->num_sensors = num_sensors; + priv->ops = data->ops; + for (i = 0; i < priv->num_sensors; i++) { + if (data->hw_ids) + priv->sensor[i].hw_id = data->hw_ids[i]; + else + priv->sensor[i].hw_id = i; + } + priv->feat = data->feat; + priv->fields = data->fields; + + platform_set_drvdata(pdev, priv); + + device_init_wakeup(dev, !data->no_irq_wake); + + if (!priv->ops || !priv->ops->init || !priv->ops->get_temp) + return -EINVAL; + + ret = priv->ops->init(priv); + if (ret < 0) { + dev_err(dev, "%s: init failed\n", __func__); + return ret; + } + + if (priv->ops->calibrate) { + ret = priv->ops->calibrate(priv); + if (ret < 0) + return dev_err_probe(dev, ret, "%s: calibration failed\n", + __func__); + } + + ret = tsens_register(priv); + if (!ret) + tsens_debug_init(pdev); + + return ret; +} + +static void tsens_remove(struct platform_device *pdev) +{ + struct tsens_priv *priv = platform_get_drvdata(pdev); + + debugfs_remove_recursive(priv->debug_root); + tsens_disable_irq(priv); + if (priv->ops->disable) + priv->ops->disable(priv); +} + +static struct platform_driver tsens_driver = { + .probe = tsens_probe, + .remove = tsens_remove, + .driver = { + .name = "qcom-tsens", + .pm = &tsens_pm_ops, + .of_match_table = tsens_table, + }, +}; +module_platform_driver(tsens_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("QCOM Temperature Sensor driver"); +MODULE_ALIAS("platform:qcom-tsens"); diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h new file mode 100644 index 000000000..e8376accd --- /dev/null +++ b/drivers/thermal/qcom/tsens.h @@ -0,0 +1,684 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2015, The Linux Foundation. All rights reserved. + */ + +#ifndef __QCOM_TSENS_H__ +#define __QCOM_TSENS_H__ + +#define NO_PT_CALIB 0x0 +#define ONE_PT_CALIB 0x1 +#define ONE_PT_CALIB2 0x2 +#define TWO_PT_CALIB 0x3 +#define ONE_PT_CALIB2_NO_OFFSET 0x6 +#define TWO_PT_CALIB_NO_OFFSET 0x7 +#define CAL_DEGC_PT1 30 +#define CAL_DEGC_PT2 120 +#define SLOPE_FACTOR 1000 +#define SLOPE_DEFAULT 3200 +#define TIMEOUT_US 100 +#define THRESHOLD_MAX_ADC_CODE 0x3ff +#define THRESHOLD_MIN_ADC_CODE 0x0 + +#define MAX_SENSORS 16 +#define MAX_READ_RETRY 3 + +#include <linux/interrupt.h> +#include <linux/thermal.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +struct tsens_priv; + +/* IP version numbers in ascending order */ +enum tsens_ver { + VER_0 = 0, + VER_0_1, + VER_1_X, + VER_1_X_NO_RPM, + VER_2_X, + VER_2_X_NO_RPM, +}; + +enum tsens_irq_type { + LOWER, + UPPER, + CRITICAL, +}; + +/** + * struct tsens_sensor - data for each sensor connected to the tsens device + * @priv: tsens device instance that this sensor is connected to + * @tzd: pointer to the thermal zone that this sensor is in + * @offset: offset of temperature adjustment curve + * @hw_id: HW ID can be used in case of platform-specific IDs + * @slope: slope of temperature adjustment curve + * @status: 8960-specific variable to track 8960 and 8660 status register offset + */ +struct tsens_sensor { + struct tsens_priv *priv; + struct thermal_zone_device *tzd; + int offset; + unsigned int hw_id; + int slope; + u32 status; + int p1_calib_offset; + int p2_calib_offset; +}; + +/** + * struct tsens_ops - operations as supported by the tsens device + * @init: Function to initialize the tsens device + * @calibrate: Function to calibrate the tsens device + * @get_temp: Function which returns the temp in millidegC + * @enable: Function to enable (clocks/power) tsens device + * @disable: Function to disable the tsens device + * @suspend: Function to suspend the tsens device + * @resume: Function to resume the tsens device + */ +struct tsens_ops { + /* mandatory callbacks */ + int (*init)(struct tsens_priv *priv); + int (*calibrate)(struct tsens_priv *priv); + int (*get_temp)(const struct tsens_sensor *s, int *temp); + /* optional callbacks */ + int (*enable)(struct tsens_priv *priv, int i); + void (*disable)(struct tsens_priv *priv); + int (*suspend)(struct tsens_priv *priv); + int (*resume)(struct tsens_priv *priv); +}; + +#define REG_FIELD_FOR_EACH_SENSOR11(_name, _offset, _startbit, _stopbit) \ + [_name##_##0] = REG_FIELD(_offset, _startbit, _stopbit), \ + [_name##_##1] = REG_FIELD(_offset + 4, _startbit, _stopbit), \ + [_name##_##2] = REG_FIELD(_offset + 8, _startbit, _stopbit), \ + [_name##_##3] = REG_FIELD(_offset + 12, _startbit, _stopbit), \ + [_name##_##4] = REG_FIELD(_offset + 16, _startbit, _stopbit), \ + [_name##_##5] = REG_FIELD(_offset + 20, _startbit, _stopbit), \ + [_name##_##6] = REG_FIELD(_offset + 24, _startbit, _stopbit), \ + [_name##_##7] = REG_FIELD(_offset + 28, _startbit, _stopbit), \ + [_name##_##8] = REG_FIELD(_offset + 32, _startbit, _stopbit), \ + [_name##_##9] = REG_FIELD(_offset + 36, _startbit, _stopbit), \ + [_name##_##10] = REG_FIELD(_offset + 40, _startbit, _stopbit) + +#define REG_FIELD_FOR_EACH_SENSOR16(_name, _offset, _startbit, _stopbit) \ + [_name##_##0] = REG_FIELD(_offset, _startbit, _stopbit), \ + [_name##_##1] = REG_FIELD(_offset + 4, _startbit, _stopbit), \ + [_name##_##2] = REG_FIELD(_offset + 8, _startbit, _stopbit), \ + [_name##_##3] = REG_FIELD(_offset + 12, _startbit, _stopbit), \ + [_name##_##4] = REG_FIELD(_offset + 16, _startbit, _stopbit), \ + [_name##_##5] = REG_FIELD(_offset + 20, _startbit, _stopbit), \ + [_name##_##6] = REG_FIELD(_offset + 24, _startbit, _stopbit), \ + [_name##_##7] = REG_FIELD(_offset + 28, _startbit, _stopbit), \ + [_name##_##8] = REG_FIELD(_offset + 32, _startbit, _stopbit), \ + [_name##_##9] = REG_FIELD(_offset + 36, _startbit, _stopbit), \ + [_name##_##10] = REG_FIELD(_offset + 40, _startbit, _stopbit), \ + [_name##_##11] = REG_FIELD(_offset + 44, _startbit, _stopbit), \ + [_name##_##12] = REG_FIELD(_offset + 48, _startbit, _stopbit), \ + [_name##_##13] = REG_FIELD(_offset + 52, _startbit, _stopbit), \ + [_name##_##14] = REG_FIELD(_offset + 56, _startbit, _stopbit), \ + [_name##_##15] = REG_FIELD(_offset + 60, _startbit, _stopbit) + +#define REG_FIELD_SPLIT_BITS_0_15(_name, _offset) \ + [_name##_##0] = REG_FIELD(_offset, 0, 0), \ + [_name##_##1] = REG_FIELD(_offset, 1, 1), \ + [_name##_##2] = REG_FIELD(_offset, 2, 2), \ + [_name##_##3] = REG_FIELD(_offset, 3, 3), \ + [_name##_##4] = REG_FIELD(_offset, 4, 4), \ + [_name##_##5] = REG_FIELD(_offset, 5, 5), \ + [_name##_##6] = REG_FIELD(_offset, 6, 6), \ + [_name##_##7] = REG_FIELD(_offset, 7, 7), \ + [_name##_##8] = REG_FIELD(_offset, 8, 8), \ + [_name##_##9] = REG_FIELD(_offset, 9, 9), \ + [_name##_##10] = REG_FIELD(_offset, 10, 10), \ + [_name##_##11] = REG_FIELD(_offset, 11, 11), \ + [_name##_##12] = REG_FIELD(_offset, 12, 12), \ + [_name##_##13] = REG_FIELD(_offset, 13, 13), \ + [_name##_##14] = REG_FIELD(_offset, 14, 14), \ + [_name##_##15] = REG_FIELD(_offset, 15, 15) + +#define REG_FIELD_SPLIT_BITS_16_31(_name, _offset) \ + [_name##_##0] = REG_FIELD(_offset, 16, 16), \ + [_name##_##1] = REG_FIELD(_offset, 17, 17), \ + [_name##_##2] = REG_FIELD(_offset, 18, 18), \ + [_name##_##3] = REG_FIELD(_offset, 19, 19), \ + [_name##_##4] = REG_FIELD(_offset, 20, 20), \ + [_name##_##5] = REG_FIELD(_offset, 21, 21), \ + [_name##_##6] = REG_FIELD(_offset, 22, 22), \ + [_name##_##7] = REG_FIELD(_offset, 23, 23), \ + [_name##_##8] = REG_FIELD(_offset, 24, 24), \ + [_name##_##9] = REG_FIELD(_offset, 25, 25), \ + [_name##_##10] = REG_FIELD(_offset, 26, 26), \ + [_name##_##11] = REG_FIELD(_offset, 27, 27), \ + [_name##_##12] = REG_FIELD(_offset, 28, 28), \ + [_name##_##13] = REG_FIELD(_offset, 29, 29), \ + [_name##_##14] = REG_FIELD(_offset, 30, 30), \ + [_name##_##15] = REG_FIELD(_offset, 31, 31) + +/* + * reg_field IDs to use as an index into an array + * If you change the order of the entries, check the devm_regmap_field_alloc() + * calls in init_common() + */ +enum regfield_ids { + /* ----- SROT ------ */ + /* HW_VER */ + VER_MAJOR, + VER_MINOR, + VER_STEP, + /* CTRL_OFFSET */ + TSENS_EN, + TSENS_SW_RST, + SENSOR_EN, + CODE_OR_TEMP, + MAIN_MEASURE_PERIOD, + + /* ----- TM ------ */ + /* TRDY */ + TRDY, + /* INTERRUPT ENABLE */ + INT_EN, /* v2+ has separate enables for crit, upper and lower irq */ + /* STATUS */ + LAST_TEMP_0, /* Last temperature reading */ + LAST_TEMP_1, + LAST_TEMP_2, + LAST_TEMP_3, + LAST_TEMP_4, + LAST_TEMP_5, + LAST_TEMP_6, + LAST_TEMP_7, + LAST_TEMP_8, + LAST_TEMP_9, + LAST_TEMP_10, + LAST_TEMP_11, + LAST_TEMP_12, + LAST_TEMP_13, + LAST_TEMP_14, + LAST_TEMP_15, + VALID_0, /* VALID reading or not */ + VALID_1, + VALID_2, + VALID_3, + VALID_4, + VALID_5, + VALID_6, + VALID_7, + VALID_8, + VALID_9, + VALID_10, + VALID_11, + VALID_12, + VALID_13, + VALID_14, + VALID_15, + LOWER_STATUS_0, /* LOWER threshold violated */ + LOWER_STATUS_1, + LOWER_STATUS_2, + LOWER_STATUS_3, + LOWER_STATUS_4, + LOWER_STATUS_5, + LOWER_STATUS_6, + LOWER_STATUS_7, + LOWER_STATUS_8, + LOWER_STATUS_9, + LOWER_STATUS_10, + LOWER_STATUS_11, + LOWER_STATUS_12, + LOWER_STATUS_13, + LOWER_STATUS_14, + LOWER_STATUS_15, + LOW_INT_STATUS_0, /* LOWER interrupt status */ + LOW_INT_STATUS_1, + LOW_INT_STATUS_2, + LOW_INT_STATUS_3, + LOW_INT_STATUS_4, + LOW_INT_STATUS_5, + LOW_INT_STATUS_6, + LOW_INT_STATUS_7, + LOW_INT_STATUS_8, + LOW_INT_STATUS_9, + LOW_INT_STATUS_10, + LOW_INT_STATUS_11, + LOW_INT_STATUS_12, + LOW_INT_STATUS_13, + LOW_INT_STATUS_14, + LOW_INT_STATUS_15, + LOW_INT_CLEAR_0, /* LOWER interrupt clear */ + LOW_INT_CLEAR_1, + LOW_INT_CLEAR_2, + LOW_INT_CLEAR_3, + LOW_INT_CLEAR_4, + LOW_INT_CLEAR_5, + LOW_INT_CLEAR_6, + LOW_INT_CLEAR_7, + LOW_INT_CLEAR_8, + LOW_INT_CLEAR_9, + LOW_INT_CLEAR_10, + LOW_INT_CLEAR_11, + LOW_INT_CLEAR_12, + LOW_INT_CLEAR_13, + LOW_INT_CLEAR_14, + LOW_INT_CLEAR_15, + LOW_INT_MASK_0, /* LOWER interrupt mask */ + LOW_INT_MASK_1, + LOW_INT_MASK_2, + LOW_INT_MASK_3, + LOW_INT_MASK_4, + LOW_INT_MASK_5, + LOW_INT_MASK_6, + LOW_INT_MASK_7, + LOW_INT_MASK_8, + LOW_INT_MASK_9, + LOW_INT_MASK_10, + LOW_INT_MASK_11, + LOW_INT_MASK_12, + LOW_INT_MASK_13, + LOW_INT_MASK_14, + LOW_INT_MASK_15, + LOW_THRESH_0, /* LOWER threshold values */ + LOW_THRESH_1, + LOW_THRESH_2, + LOW_THRESH_3, + LOW_THRESH_4, + LOW_THRESH_5, + LOW_THRESH_6, + LOW_THRESH_7, + LOW_THRESH_8, + LOW_THRESH_9, + LOW_THRESH_10, + LOW_THRESH_11, + LOW_THRESH_12, + LOW_THRESH_13, + LOW_THRESH_14, + LOW_THRESH_15, + UPPER_STATUS_0, /* UPPER threshold violated */ + UPPER_STATUS_1, + UPPER_STATUS_2, + UPPER_STATUS_3, + UPPER_STATUS_4, + UPPER_STATUS_5, + UPPER_STATUS_6, + UPPER_STATUS_7, + UPPER_STATUS_8, + UPPER_STATUS_9, + UPPER_STATUS_10, + UPPER_STATUS_11, + UPPER_STATUS_12, + UPPER_STATUS_13, + UPPER_STATUS_14, + UPPER_STATUS_15, + UP_INT_STATUS_0, /* UPPER interrupt status */ + UP_INT_STATUS_1, + UP_INT_STATUS_2, + UP_INT_STATUS_3, + UP_INT_STATUS_4, + UP_INT_STATUS_5, + UP_INT_STATUS_6, + UP_INT_STATUS_7, + UP_INT_STATUS_8, + UP_INT_STATUS_9, + UP_INT_STATUS_10, + UP_INT_STATUS_11, + UP_INT_STATUS_12, + UP_INT_STATUS_13, + UP_INT_STATUS_14, + UP_INT_STATUS_15, + UP_INT_CLEAR_0, /* UPPER interrupt clear */ + UP_INT_CLEAR_1, + UP_INT_CLEAR_2, + UP_INT_CLEAR_3, + UP_INT_CLEAR_4, + UP_INT_CLEAR_5, + UP_INT_CLEAR_6, + UP_INT_CLEAR_7, + UP_INT_CLEAR_8, + UP_INT_CLEAR_9, + UP_INT_CLEAR_10, + UP_INT_CLEAR_11, + UP_INT_CLEAR_12, + UP_INT_CLEAR_13, + UP_INT_CLEAR_14, + UP_INT_CLEAR_15, + UP_INT_MASK_0, /* UPPER interrupt mask */ + UP_INT_MASK_1, + UP_INT_MASK_2, + UP_INT_MASK_3, + UP_INT_MASK_4, + UP_INT_MASK_5, + UP_INT_MASK_6, + UP_INT_MASK_7, + UP_INT_MASK_8, + UP_INT_MASK_9, + UP_INT_MASK_10, + UP_INT_MASK_11, + UP_INT_MASK_12, + UP_INT_MASK_13, + UP_INT_MASK_14, + UP_INT_MASK_15, + UP_THRESH_0, /* UPPER threshold values */ + UP_THRESH_1, + UP_THRESH_2, + UP_THRESH_3, + UP_THRESH_4, + UP_THRESH_5, + UP_THRESH_6, + UP_THRESH_7, + UP_THRESH_8, + UP_THRESH_9, + UP_THRESH_10, + UP_THRESH_11, + UP_THRESH_12, + UP_THRESH_13, + UP_THRESH_14, + UP_THRESH_15, + CRITICAL_STATUS_0, /* CRITICAL threshold violated */ + CRITICAL_STATUS_1, + CRITICAL_STATUS_2, + CRITICAL_STATUS_3, + CRITICAL_STATUS_4, + CRITICAL_STATUS_5, + CRITICAL_STATUS_6, + CRITICAL_STATUS_7, + CRITICAL_STATUS_8, + CRITICAL_STATUS_9, + CRITICAL_STATUS_10, + CRITICAL_STATUS_11, + CRITICAL_STATUS_12, + CRITICAL_STATUS_13, + CRITICAL_STATUS_14, + CRITICAL_STATUS_15, + CRIT_INT_STATUS_0, /* CRITICAL interrupt status */ + CRIT_INT_STATUS_1, + CRIT_INT_STATUS_2, + CRIT_INT_STATUS_3, + CRIT_INT_STATUS_4, + CRIT_INT_STATUS_5, + CRIT_INT_STATUS_6, + CRIT_INT_STATUS_7, + CRIT_INT_STATUS_8, + CRIT_INT_STATUS_9, + CRIT_INT_STATUS_10, + CRIT_INT_STATUS_11, + CRIT_INT_STATUS_12, + CRIT_INT_STATUS_13, + CRIT_INT_STATUS_14, + CRIT_INT_STATUS_15, + CRIT_INT_CLEAR_0, /* CRITICAL interrupt clear */ + CRIT_INT_CLEAR_1, + CRIT_INT_CLEAR_2, + CRIT_INT_CLEAR_3, + CRIT_INT_CLEAR_4, + CRIT_INT_CLEAR_5, + CRIT_INT_CLEAR_6, + CRIT_INT_CLEAR_7, + CRIT_INT_CLEAR_8, + CRIT_INT_CLEAR_9, + CRIT_INT_CLEAR_10, + CRIT_INT_CLEAR_11, + CRIT_INT_CLEAR_12, + CRIT_INT_CLEAR_13, + CRIT_INT_CLEAR_14, + CRIT_INT_CLEAR_15, + CRIT_INT_MASK_0, /* CRITICAL interrupt mask */ + CRIT_INT_MASK_1, + CRIT_INT_MASK_2, + CRIT_INT_MASK_3, + CRIT_INT_MASK_4, + CRIT_INT_MASK_5, + CRIT_INT_MASK_6, + CRIT_INT_MASK_7, + CRIT_INT_MASK_8, + CRIT_INT_MASK_9, + CRIT_INT_MASK_10, + CRIT_INT_MASK_11, + CRIT_INT_MASK_12, + CRIT_INT_MASK_13, + CRIT_INT_MASK_14, + CRIT_INT_MASK_15, + CRIT_THRESH_0, /* CRITICAL threshold values */ + CRIT_THRESH_1, + CRIT_THRESH_2, + CRIT_THRESH_3, + CRIT_THRESH_4, + CRIT_THRESH_5, + CRIT_THRESH_6, + CRIT_THRESH_7, + CRIT_THRESH_8, + CRIT_THRESH_9, + CRIT_THRESH_10, + CRIT_THRESH_11, + CRIT_THRESH_12, + CRIT_THRESH_13, + CRIT_THRESH_14, + CRIT_THRESH_15, + + /* WATCHDOG */ + WDOG_BARK_STATUS, + WDOG_BARK_CLEAR, + WDOG_BARK_MASK, + WDOG_BARK_COUNT, + + /* CYCLE COMPLETION MONITOR */ + CC_MON_STATUS, + CC_MON_CLEAR, + CC_MON_MASK, + + MIN_STATUS_0, /* MIN threshold violated */ + MIN_STATUS_1, + MIN_STATUS_2, + MIN_STATUS_3, + MIN_STATUS_4, + MIN_STATUS_5, + MIN_STATUS_6, + MIN_STATUS_7, + MIN_STATUS_8, + MIN_STATUS_9, + MIN_STATUS_10, + MIN_STATUS_11, + MIN_STATUS_12, + MIN_STATUS_13, + MIN_STATUS_14, + MIN_STATUS_15, + MAX_STATUS_0, /* MAX threshold violated */ + MAX_STATUS_1, + MAX_STATUS_2, + MAX_STATUS_3, + MAX_STATUS_4, + MAX_STATUS_5, + MAX_STATUS_6, + MAX_STATUS_7, + MAX_STATUS_8, + MAX_STATUS_9, + MAX_STATUS_10, + MAX_STATUS_11, + MAX_STATUS_12, + MAX_STATUS_13, + MAX_STATUS_14, + MAX_STATUS_15, + + /* Keep last */ + MAX_REGFIELDS +}; + +/** + * struct tsens_features - Features supported by the IP + * @ver_major: Major number of IP version + * @crit_int: does the IP support critical interrupts? + * @combo_int: does the IP use one IRQ for up, low and critical thresholds? + * @adc: do the sensors only output adc code (instead of temperature)? + * @srot_split: does the IP neatly splits the register space into SROT and TM, + * with SROT only being available to secure boot firmware? + * @has_watchdog: does this IP support watchdog functionality? + * @max_sensors: maximum sensors supported by this version of the IP + * @trip_min_temp: minimum trip temperature supported by this version of the IP + * @trip_max_temp: maximum trip temperature supported by this version of the IP + */ +struct tsens_features { + unsigned int ver_major; + unsigned int crit_int:1; + unsigned int combo_int:1; + unsigned int adc:1; + unsigned int srot_split:1; + unsigned int has_watchdog:1; + unsigned int max_sensors; + int trip_min_temp; + int trip_max_temp; +}; + +/** + * struct tsens_plat_data - tsens compile-time platform data + * @num_sensors: Number of sensors supported by platform + * @ops: operations the tsens instance supports + * @hw_ids: Subset of sensors ids supported by platform, if not the first n + * @feat: features of the IP + * @fields: bitfield locations + * @no_irq_wake: if set, TSENS interrupts will not be configured as wakeup sources + */ +struct tsens_plat_data { + const u32 num_sensors; + const struct tsens_ops *ops; + unsigned int *hw_ids; + struct tsens_features *feat; + const struct reg_field *fields; + bool no_irq_wake; +}; + +/** + * struct tsens_context - Registers to be saved/restored across a context loss + * @threshold: Threshold register value + * @control: Control register value + */ +struct tsens_context { + int threshold; + int control; +}; + +/** + * struct tsens_priv - private data for each instance of the tsens IP + * @dev: pointer to struct device + * @num_sensors: number of sensors enabled on this device + * @tm_map: pointer to TM register address space + * @srot_map: pointer to SROT register address space + * @tm_offset: deal with old device trees that don't address TM and SROT + * address space separately + * @ul_lock: lock while processing upper/lower threshold interrupts + * @crit_lock: lock while processing critical threshold interrupts + * @rf: array of regmap_fields used to store value of the field + * @ctx: registers to be saved and restored during suspend/resume + * @feat: features of the IP + * @fields: bitfield locations + * @ops: pointer to list of callbacks supported by this device + * @debug_root: pointer to debugfs dentry for all tsens + * @debug: pointer to debugfs dentry for tsens controller + * @uplow_irq: IRQ number for uplow (upper/lower) threshold interrupts + * @crit_irq: IRQ number for critical threshold interrupts + * @combined_irq: IRQ number for combined threshold interrupts + * @sensor: list of sensors attached to this device + */ +struct tsens_priv { + struct device *dev; + u32 num_sensors; + struct regmap *tm_map; + struct regmap *srot_map; + u32 tm_offset; + + /* lock for upper/lower threshold interrupts */ + spinlock_t ul_lock; + + struct regmap_field *rf[MAX_REGFIELDS]; + struct tsens_context ctx; + struct tsens_features *feat; + const struct reg_field *fields; + const struct tsens_ops *ops; + + struct dentry *debug_root; + struct dentry *debug; + + int uplow_irq; + int crit_irq; + int combined_irq; + + struct tsens_sensor sensor[] __counted_by(num_sensors); +}; + +/** + * struct tsens_single_value - internal representation of a single field inside nvmem calibration data + * @idx: index into the u32 data array + * @shift: the shift of the first bit in the value + * @blob: index of the data blob to use for this cell + */ +struct tsens_single_value { + u8 idx; + u8 shift; + u8 blob; +}; + +/** + * struct tsens_legacy_calibration_format - description of calibration data used when parsing the legacy nvmem blob + * @base_len: the length of the base fields inside calibration data + * @base_shift: the shift to be applied to base data + * @sp_len: the length of the sN_pM fields inside calibration data + * @mode: descriptor of the calibration mode field + * @invalid: descriptor of the calibration mode invalid field + * @base: descriptors of the base0 and base1 fields + * @sp: descriptors of the sN_pM fields + */ +struct tsens_legacy_calibration_format { + unsigned int base_len; + unsigned int base_shift; + unsigned int sp_len; + /* just two bits */ + struct tsens_single_value mode; + /* on all platforms except 8974 invalid is the third bit of what downstream calls 'mode' */ + struct tsens_single_value invalid; + struct tsens_single_value base[2]; + struct tsens_single_value sp[][2]; +}; + +char *qfprom_read(struct device *dev, const char *cname); +int tsens_read_calibration_legacy(struct tsens_priv *priv, + const struct tsens_legacy_calibration_format *format, + u32 *p1, u32 *p2, + u32 *cdata, u32 *csel); +int tsens_read_calibration(struct tsens_priv *priv, int shift, u32 *p1, u32 *p2, bool backup); +int tsens_calibrate_nvmem(struct tsens_priv *priv, int shift); +int tsens_calibrate_common(struct tsens_priv *priv); +void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mode); +int init_common(struct tsens_priv *priv); +int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp); +int get_temp_common(const struct tsens_sensor *s, int *temp); +#ifdef CONFIG_SUSPEND +int tsens_resume_common(struct tsens_priv *priv); +int tsens_suspend_common(struct tsens_priv *priv); +#else +static inline int tsens_resume_common(struct tsens_priv *priv) +{ + return 0; +} + +static inline int tsens_suspend_common(struct tsens_priv *priv) +{ + return 0; +} +#endif + +/* TSENS target */ +extern struct tsens_plat_data data_8960; + +/* TSENS v0.1 targets */ +extern struct tsens_plat_data data_8226, data_8909, data_8916, data_8939, data_8974, data_9607; + +/* TSENS v1 targets */ +extern struct tsens_plat_data data_tsens_v1, data_8937, data_8976, data_8956; + +/* TSENS v1 with no RPM targets */ +extern const struct tsens_plat_data data_ipq5018; + +/* TSENS v2 targets */ +extern struct tsens_plat_data data_8996, data_ipq8074, data_tsens_v2; +extern const struct tsens_plat_data data_ipq5332, data_ipq5424; + +/* TSENS automotive targets */ +extern struct tsens_plat_data data_automotive_v2; + +#endif /* __QCOM_TSENS_H__ */ |
