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author | Sven Van Asbroeck <thesven73@gmail.com> | 2019-12-16 09:32:58 -0500 |
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committer | Pavel <pavel@ucw.cz> | 2019-12-21 20:10:02 +0100 |
commit | b3b42b4a383c11daf34b6e4e997bd0d0bb83f02b (patch) | |
tree | 274f3b63afdf43fa2be6cc41680069e5ab8c7fc5 /drivers/leds | |
parent | b0ff986084007ca91a9d0738825e593b41d3b979 (diff) | |
download | linux-b3b42b4a383c11daf34b6e4e997bd0d0bb83f02b.tar.gz linux-b3b42b4a383c11daf34b6e4e997bd0d0bb83f02b.tar.bz2 linux-b3b42b4a383c11daf34b6e4e997bd0d0bb83f02b.zip |
leds: tps6105x: add driver for MFD chip LED mode
This driver adds support for the LED operational mode of the
tps6105x MFD device.
Acked-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Sven Van Asbroeck <TheSven73@gmail.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers/leds')
-rw-r--r-- | drivers/leds/Kconfig | 10 | ||||
-rw-r--r-- | drivers/leds/Makefile | 1 | ||||
-rw-r--r-- | drivers/leds/leds-tps6105x.c | 89 |
3 files changed, 100 insertions, 0 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 4b68520ac251..d82f1dea3711 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -836,6 +836,16 @@ config LEDS_LM36274 Say Y to enable the LM36274 LED driver for TI LMU devices. This supports the LED device LM36274. +config LEDS_TPS6105X + tristate "LED support for TI TPS6105X" + depends on LEDS_CLASS + depends on TPS6105X + default y if TPS6105X + help + This driver supports TPS61050/TPS61052 LED chips. + It is a single boost converter primarily for white LEDs and + audio amplifiers. + comment "LED Triggers" source "drivers/leds/trigger/Kconfig" diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 2da39e896ce8..d7e1107753fb 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -85,6 +85,7 @@ obj-$(CONFIG_LEDS_LM3601X) += leds-lm3601x.o obj-$(CONFIG_LEDS_TI_LMU_COMMON) += leds-ti-lmu-common.o obj-$(CONFIG_LEDS_LM3697) += leds-lm3697.o obj-$(CONFIG_LEDS_LM36274) += leds-lm36274.o +obj-$(CONFIG_LEDS_TPS6105X) += leds-tps6105x.o # LED SPI Drivers obj-$(CONFIG_LEDS_CR0014114) += leds-cr0014114.o diff --git a/drivers/leds/leds-tps6105x.c b/drivers/leds/leds-tps6105x.c new file mode 100644 index 000000000000..09fd88a6c8f0 --- /dev/null +++ b/drivers/leds/leds-tps6105x.c @@ -0,0 +1,89 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2019 Sven Van Asbroeck + */ + +#include <linux/leds.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/mfd/tps6105x.h> +#include <linux/regmap.h> + +struct tps6105x_priv { + struct regmap *regmap; + struct led_classdev cdev; + struct fwnode_handle *fwnode; +}; + +static void tps6105x_handle_put(void *data) +{ + struct tps6105x_priv *priv = data; + + fwnode_handle_put(priv->fwnode); +} + +static int tps6105x_brightness_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct tps6105x_priv *priv = container_of(cdev, struct tps6105x_priv, + cdev); + + return regmap_update_bits(priv->regmap, TPS6105X_REG_0, + TPS6105X_REG0_TORCHC_MASK, + brightness << TPS6105X_REG0_TORCHC_SHIFT); +} + +static int tps6105x_led_probe(struct platform_device *pdev) +{ + struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev); + struct tps6105x_platform_data *pdata = tps6105x->pdata; + struct led_init_data init_data = { }; + struct tps6105x_priv *priv; + int ret; + + /* This instance is not set for torch mode so bail out */ + if (pdata->mode != TPS6105X_MODE_TORCH) { + dev_info(&pdev->dev, + "chip not in torch mode, exit probe"); + return -EINVAL; + } + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + /* fwnode/devicetree is optional. NULL is allowed for priv->fwnode */ + priv->fwnode = device_get_next_child_node(pdev->dev.parent, NULL); + ret = devm_add_action_or_reset(&pdev->dev, tps6105x_handle_put, priv); + if (ret) + return ret; + priv->regmap = tps6105x->regmap; + priv->cdev.brightness_set_blocking = tps6105x_brightness_set; + priv->cdev.max_brightness = 7; + init_data.devicename = "tps6105x"; + init_data.default_label = ":torch"; + init_data.fwnode = priv->fwnode; + + ret = regmap_update_bits(tps6105x->regmap, TPS6105X_REG_0, + TPS6105X_REG0_MODE_MASK | + TPS6105X_REG0_TORCHC_MASK, + TPS6105X_REG0_MODE_TORCH << + TPS6105X_REG0_MODE_SHIFT); + if (ret) + return ret; + + return devm_led_classdev_register_ext(&pdev->dev, &priv->cdev, + &init_data); +} + +static struct platform_driver led_driver = { + .probe = tps6105x_led_probe, + .driver = { + .name = "tps6105x-leds", + }, +}; + +module_platform_driver(led_driver); + +MODULE_DESCRIPTION("TPS6105x LED driver"); +MODULE_AUTHOR("Sven Van Asbroeck <TheSven73@gmail.com>"); +MODULE_LICENSE("GPL v2"); |