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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /drivers/hwmon/tmp103.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
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Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'drivers/hwmon/tmp103.c')
-rw-r--r--drivers/hwmon/tmp103.c222
1 files changed, 222 insertions, 0 deletions
diff --git a/drivers/hwmon/tmp103.c b/drivers/hwmon/tmp103.c
new file mode 100644
index 000000000..f13d24767
--- /dev/null
+++ b/drivers/hwmon/tmp103.c
@@ -0,0 +1,222 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Texas Instruments TMP103 SMBus temperature sensor driver
+ * Copyright (C) 2014 Heiko Schocher <hs@denx.de>
+ *
+ * Based on:
+ * Texas Instruments TMP102 SMBus temperature sensor driver
+ *
+ * Copyright (C) 2010 Steven King <sfking@fdwdc.com>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
+#include <linux/device.h>
+#include <linux/regmap.h>
+
+#define TMP103_TEMP_REG 0x00
+#define TMP103_CONF_REG 0x01
+#define TMP103_TLOW_REG 0x02
+#define TMP103_THIGH_REG 0x03
+
+#define TMP103_CONF_M0 0x01
+#define TMP103_CONF_M1 0x02
+#define TMP103_CONF_LC 0x04
+#define TMP103_CONF_FL 0x08
+#define TMP103_CONF_FH 0x10
+#define TMP103_CONF_CR0 0x20
+#define TMP103_CONF_CR1 0x40
+#define TMP103_CONF_ID 0x80
+#define TMP103_CONF_SD (TMP103_CONF_M1)
+#define TMP103_CONF_SD_MASK (TMP103_CONF_M0 | TMP103_CONF_M1)
+
+#define TMP103_CONFIG (TMP103_CONF_CR1 | TMP103_CONF_M1)
+#define TMP103_CONFIG_MASK (TMP103_CONF_CR0 | TMP103_CONF_CR1 | \
+ TMP103_CONF_M0 | TMP103_CONF_M1)
+
+static inline int tmp103_reg_to_mc(s8 val)
+{
+ return val * 1000;
+}
+
+static inline u8 tmp103_mc_to_reg(int val)
+{
+ return DIV_ROUND_CLOSEST(val, 1000);
+}
+
+static int tmp103_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *temp)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ unsigned int regval;
+ int err, reg;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ reg = TMP103_TEMP_REG;
+ break;
+ case hwmon_temp_min:
+ reg = TMP103_TLOW_REG;
+ break;
+ case hwmon_temp_max:
+ reg = TMP103_THIGH_REG;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ err = regmap_read(regmap, reg, &regval);
+ if (err < 0)
+ return err;
+
+ *temp = tmp103_reg_to_mc(regval);
+
+ return 0;
+}
+
+static int tmp103_write(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long temp)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ int reg;
+
+ switch (attr) {
+ case hwmon_temp_min:
+ reg = TMP103_TLOW_REG;
+ break;
+ case hwmon_temp_max:
+ reg = TMP103_THIGH_REG;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ temp = clamp_val(temp, -55000, 127000);
+ return regmap_write(regmap, reg, tmp103_mc_to_reg(temp));
+}
+
+static umode_t tmp103_is_visible(const void *data, enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ if (type != hwmon_temp)
+ return 0;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ return 0444;
+ case hwmon_temp_min:
+ case hwmon_temp_max:
+ return 0644;
+ default:
+ return 0;
+ }
+}
+
+static const struct hwmon_channel_info * const tmp103_info[] = {
+ HWMON_CHANNEL_INFO(chip,
+ HWMON_C_REGISTER_TZ),
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN),
+ NULL
+};
+
+static const struct hwmon_ops tmp103_hwmon_ops = {
+ .is_visible = tmp103_is_visible,
+ .read = tmp103_read,
+ .write = tmp103_write,
+};
+
+static const struct hwmon_chip_info tmp103_chip_info = {
+ .ops = &tmp103_hwmon_ops,
+ .info = tmp103_info,
+};
+
+static bool tmp103_regmap_is_volatile(struct device *dev, unsigned int reg)
+{
+ return reg == TMP103_TEMP_REG;
+}
+
+static const struct regmap_config tmp103_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = TMP103_THIGH_REG,
+ .volatile_reg = tmp103_regmap_is_volatile,
+};
+
+static int tmp103_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct regmap *regmap;
+ int ret;
+
+ regmap = devm_regmap_init_i2c(client, &tmp103_regmap_config);
+ if (IS_ERR(regmap)) {
+ dev_err(dev, "failed to allocate register map\n");
+ return PTR_ERR(regmap);
+ }
+
+ ret = regmap_update_bits(regmap, TMP103_CONF_REG, TMP103_CONFIG_MASK,
+ TMP103_CONFIG);
+ if (ret < 0) {
+ dev_err(&client->dev, "error writing config register\n");
+ return ret;
+ }
+
+ i2c_set_clientdata(client, regmap);
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
+ regmap,
+ &tmp103_chip_info,
+ NULL);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+static int tmp103_suspend(struct device *dev)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+
+ return regmap_update_bits(regmap, TMP103_CONF_REG,
+ TMP103_CONF_SD_MASK, 0);
+}
+
+static int tmp103_resume(struct device *dev)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+
+ return regmap_update_bits(regmap, TMP103_CONF_REG,
+ TMP103_CONF_SD_MASK, TMP103_CONF_SD);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(tmp103_dev_pm_ops, tmp103_suspend, tmp103_resume);
+
+static const struct i2c_device_id tmp103_id[] = {
+ { .name = "tmp103" },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tmp103_id);
+
+static const struct of_device_id __maybe_unused tmp103_of_match[] = {
+ { .compatible = "ti,tmp103" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, tmp103_of_match);
+
+static struct i2c_driver tmp103_driver = {
+ .driver = {
+ .name = "tmp103",
+ .of_match_table = of_match_ptr(tmp103_of_match),
+ .pm = pm_sleep_ptr(&tmp103_dev_pm_ops),
+ },
+ .probe = tmp103_probe,
+ .id_table = tmp103_id,
+};
+
+module_i2c_driver(tmp103_driver);
+
+MODULE_AUTHOR("Heiko Schocher <hs@denx.de>");
+MODULE_DESCRIPTION("Texas Instruments TMP103 temperature sensor driver");
+MODULE_LICENSE("GPL");