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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/mfd/as3711.c | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'drivers/mfd/as3711.c')
| -rw-r--r-- | drivers/mfd/as3711.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/drivers/mfd/as3711.c b/drivers/mfd/as3711.c new file mode 100644 index 000000000..974197703 --- /dev/null +++ b/drivers/mfd/as3711.c @@ -0,0 +1,213 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * AS3711 PMIC MFC driver + * + * Copyright (C) 2012 Renesas Electronics Corporation + * Author: Guennadi Liakhovetski, <g.liakhovetski@gmx.de> + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/mfd/as3711.h> +#include <linux/mfd/core.h> +#include <linux/of.h> +#include <linux/regmap.h> +#include <linux/slab.h> + +enum { + AS3711_REGULATOR, + AS3711_BACKLIGHT, +}; + +/* + * Ok to have it static: it is only used during probing and multiple I2C devices + * cannot be probed simultaneously. Just make sure to avoid stale data. + */ +static struct mfd_cell as3711_subdevs[] = { + [AS3711_REGULATOR] = {.name = "as3711-regulator",}, + [AS3711_BACKLIGHT] = {.name = "as3711-backlight",}, +}; + +static bool as3711_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case AS3711_GPIO_SIGNAL_IN: + case AS3711_INTERRUPT_STATUS_1: + case AS3711_INTERRUPT_STATUS_2: + case AS3711_INTERRUPT_STATUS_3: + case AS3711_CHARGER_STATUS_1: + case AS3711_CHARGER_STATUS_2: + case AS3711_REG_STATUS: + return true; + } + return false; +} + +static bool as3711_precious_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case AS3711_INTERRUPT_STATUS_1: + case AS3711_INTERRUPT_STATUS_2: + case AS3711_INTERRUPT_STATUS_3: + return true; + } + return false; +} + +static bool as3711_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case AS3711_SD_1_VOLTAGE: + case AS3711_SD_2_VOLTAGE: + case AS3711_SD_3_VOLTAGE: + case AS3711_SD_4_VOLTAGE: + case AS3711_LDO_1_VOLTAGE: + case AS3711_LDO_2_VOLTAGE: + case AS3711_LDO_3_VOLTAGE: + case AS3711_LDO_4_VOLTAGE: + case AS3711_LDO_5_VOLTAGE: + case AS3711_LDO_6_VOLTAGE: + case AS3711_LDO_7_VOLTAGE: + case AS3711_LDO_8_VOLTAGE: + case AS3711_SD_CONTROL: + case AS3711_GPIO_SIGNAL_OUT: + case AS3711_GPIO_SIGNAL_IN: + case AS3711_SD_CONTROL_1: + case AS3711_SD_CONTROL_2: + case AS3711_CURR_CONTROL: + case AS3711_CURR1_VALUE: + case AS3711_CURR2_VALUE: + case AS3711_CURR3_VALUE: + case AS3711_STEPUP_CONTROL_1: + case AS3711_STEPUP_CONTROL_2: + case AS3711_STEPUP_CONTROL_4: + case AS3711_STEPUP_CONTROL_5: + case AS3711_REG_STATUS: + case AS3711_INTERRUPT_STATUS_1: + case AS3711_INTERRUPT_STATUS_2: + case AS3711_INTERRUPT_STATUS_3: + case AS3711_CHARGER_STATUS_1: + case AS3711_CHARGER_STATUS_2: + case AS3711_ASIC_ID_1: + case AS3711_ASIC_ID_2: + return true; + } + return false; +} + +static const struct regmap_config as3711_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .volatile_reg = as3711_volatile_reg, + .readable_reg = as3711_readable_reg, + .precious_reg = as3711_precious_reg, + .max_register = AS3711_MAX_REG, + .num_reg_defaults_raw = AS3711_NUM_REGS, + .cache_type = REGCACHE_MAPLE, +}; + +#ifdef CONFIG_OF +static const struct of_device_id as3711_of_match[] = { + {.compatible = "ams,as3711",}, + {} +}; +#endif + +static int as3711_i2c_probe(struct i2c_client *client) +{ + struct as3711 *as3711; + struct as3711_platform_data *pdata; + unsigned int id1, id2; + int ret; + + if (!client->dev.of_node) { + pdata = dev_get_platdata(&client->dev); + if (!pdata) + dev_dbg(&client->dev, "Platform data not found\n"); + } else { + pdata = devm_kzalloc(&client->dev, + sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + } + + as3711 = devm_kzalloc(&client->dev, sizeof(struct as3711), GFP_KERNEL); + if (!as3711) + return -ENOMEM; + + as3711->dev = &client->dev; + i2c_set_clientdata(client, as3711); + + if (client->irq) + dev_notice(&client->dev, "IRQ not supported yet\n"); + + as3711->regmap = devm_regmap_init_i2c(client, &as3711_regmap_config); + if (IS_ERR(as3711->regmap)) { + ret = PTR_ERR(as3711->regmap); + dev_err(&client->dev, + "regmap initialization failed: %d\n", ret); + return ret; + } + + ret = regmap_read(as3711->regmap, AS3711_ASIC_ID_1, &id1); + if (!ret) + ret = regmap_read(as3711->regmap, AS3711_ASIC_ID_2, &id2); + if (ret < 0) { + dev_err(&client->dev, "regmap_read() failed: %d\n", ret); + return ret; + } + if (id1 != 0x8b) + return -ENODEV; + dev_info(as3711->dev, "AS3711 detected: %x:%x\n", id1, id2); + + /* + * We can reuse as3711_subdevs[], + * it will be copied in mfd_add_devices() + */ + if (pdata) { + as3711_subdevs[AS3711_REGULATOR].platform_data = + &pdata->regulator; + as3711_subdevs[AS3711_REGULATOR].pdata_size = + sizeof(pdata->regulator); + as3711_subdevs[AS3711_BACKLIGHT].platform_data = + &pdata->backlight; + as3711_subdevs[AS3711_BACKLIGHT].pdata_size = + sizeof(pdata->backlight); + } else { + as3711_subdevs[AS3711_REGULATOR].platform_data = NULL; + as3711_subdevs[AS3711_REGULATOR].pdata_size = 0; + as3711_subdevs[AS3711_BACKLIGHT].platform_data = NULL; + as3711_subdevs[AS3711_BACKLIGHT].pdata_size = 0; + } + + ret = devm_mfd_add_devices(as3711->dev, -1, as3711_subdevs, + ARRAY_SIZE(as3711_subdevs), NULL, 0, NULL); + if (ret < 0) + dev_err(&client->dev, "add mfd devices failed: %d\n", ret); + + return ret; +} + +static const struct i2c_device_id as3711_i2c_id[] = { + {.name = "as3711", .driver_data = 0}, + {} +}; + +static struct i2c_driver as3711_i2c_driver = { + .driver = { + .name = "as3711", + .of_match_table = of_match_ptr(as3711_of_match), + }, + .probe = as3711_i2c_probe, + .id_table = as3711_i2c_id, +}; + +static int __init as3711_i2c_init(void) +{ + return i2c_add_driver(&as3711_i2c_driver); +} +/* Initialise early */ +subsys_initcall(as3711_i2c_init); |
