diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 44097a3e0..a0cbdbb2c 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -756,6 +756,14 @@ config LEDS_NIC78BX To compile this driver as a module, choose M here: the module will be called leds-nic78bx. +config LEDS_AXP20X + tristate "LED support for AXP20X-like PMICs (AXP813, ...)" + depends on LEDS_CLASS && MFD_AXP20X + help + This option enables support for on-chip LED drivers on + AXP20X-like PMICs. + + comment "LED Triggers" source "drivers/leds/trigger/Kconfig" diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 420b5d2cf..a8149fb6e 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -78,6 +78,7 @@ obj-$(CONFIG_LEDS_MT6323) += leds-mt6323.o obj-$(CONFIG_LEDS_LM3692X) += leds-lm3692x.o obj-$(CONFIG_LEDS_SC27XX_BLTC) += leds-sc27xx-bltc.o obj-$(CONFIG_LEDS_LM3601X) += leds-lm3601x.o +obj-$(CONFIG_LEDS_AXP20X) += leds-axp20x.o # LED SPI Drivers obj-$(CONFIG_LEDS_CR0014114) += leds-cr0014114.o diff --git a/drivers/leds/leds-axp20x.c b/drivers/leds/leds-axp20x.c new file mode 100644 index 000000000..de33c1d83 --- /dev/null +++ b/drivers/leds/leds-axp20x.c @@ -0,0 +1,138 @@ +/* + * LED Driver for X-Powers AXP813 PMIC. + * + * Copyright(c) 2017 Ondrej Jirman + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define AXP813_CHGLED_CTRL_MASK BIT(3) +#define AXP813_CHGLED_CTRL_CHARGER BIT(3) +#define AXP813_CHGLED_CTRL_USER 0 + +#define AXP813_CHGLED_USER_STATE_MASK GENMASK(5, 4) +#define AXP813_CHGLED_USER_STATE_OFFSET 4 +#define AXP813_CHGLED_USER_STATE_OFF 0 +#define AXP813_CHGLED_USER_STATE_BLINK_SLOW 1 +#define AXP813_CHGLED_USER_STATE_BLINK_FAST 2 +#define AXP813_CHGLED_USER_STATE_ON 3 + +struct axp20x_led { + struct led_classdev cdev; + struct regmap *regmap; +}; + +static int axp20x_led_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct axp20x_led *led = + container_of(led_cdev, struct axp20x_led, cdev); + unsigned int val; + + val = value == LED_OFF ? AXP813_CHGLED_USER_STATE_OFF : + AXP813_CHGLED_USER_STATE_ON; + + return regmap_update_bits(led->regmap, AXP20X_OFF_CTRL, + AXP813_CHGLED_USER_STATE_MASK, + val << AXP813_CHGLED_USER_STATE_OFFSET); + +} + +static int axp20x_led_probe(struct platform_device *pdev) +{ + struct axp20x_dev *axp20x; + struct axp20x_led *led; + int ret; + + if (!of_device_is_available(pdev->dev.of_node)) + return -ENODEV; + + axp20x = dev_get_drvdata(pdev->dev.parent); + if (!axp20x) + return -EINVAL; + + led = devm_kzalloc(&pdev->dev, + sizeof(struct axp20x_led), + GFP_KERNEL); + if (!led) + return -ENOMEM; + + led->regmap = axp20x->regmap; + + led->cdev.name = "chgled"; + led->cdev.brightness_set_blocking = axp20x_led_set; + led->cdev.brightness = LED_OFF; + led->cdev.max_brightness = 1; + + ret = led_classdev_register(pdev->dev.parent, &led->cdev); + if (ret) { + dev_err(&pdev->dev, "Failed to register led %s\n", + led->cdev.name); + return ret; + } + + ret = regmap_update_bits(led->regmap, AXP20X_OFF_CTRL, + AXP813_CHGLED_CTRL_MASK, + AXP813_CHGLED_CTRL_USER); + if (ret) { + dev_err(&pdev->dev, "Failed to enable user cnotrol\n"); + } + + ret = axp20x_led_set(&led->cdev, led->cdev.brightness); + if (ret) { + dev_err(&pdev->dev, "Failed to init led %s\n", + led->cdev.name); + } + + platform_set_drvdata(pdev, led); + return 0; +} + +static int axp20x_led_remove(struct platform_device *pdev) +{ + struct axp20x_led *led = platform_get_drvdata(pdev); + + axp20x_led_set(&led->cdev, LED_OFF); + + regmap_update_bits(led->regmap, AXP20X_OFF_CTRL, + AXP813_CHGLED_CTRL_MASK, + AXP813_CHGLED_CTRL_CHARGER); + + led_classdev_unregister(&led->cdev); + + return 0; +} + +static const struct of_device_id axp20x_leds_of_match[] = { + { .compatible = "x-powers,axp813-leds", }, + { }, +}; +MODULE_DEVICE_TABLE(of, axp20x_leds_of_match); + +static struct platform_driver axp20x_led_driver = { + .driver = { + .name = "axp20x-leds", + .of_match_table = axp20x_leds_of_match, + }, + .probe = axp20x_led_probe, + .remove = axp20x_led_remove, +}; + +module_platform_driver(axp20x_led_driver); + +MODULE_AUTHOR("Ondrej Jirman "); +MODULE_DESCRIPTION("LED driver for AXP813 PMIC"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:leds-axp20x"); diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c index 0be511dd9..a9bdf3cdd 100644 --- a/drivers/mfd/axp20x.c +++ b/drivers/mfd/axp20x.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -130,6 +131,7 @@ static const struct regmap_range axp288_volatile_ranges[] = { regmap_reg_range(AXP288_BC_GLOBAL, AXP288_BC_GLOBAL), regmap_reg_range(AXP288_BC_DET_STAT, AXP288_BC_DET_STAT), regmap_reg_range(AXP20X_CHRG_BAK_CTRL, AXP20X_CHRG_BAK_CTRL), + regmap_reg_range(AXP22X_CHRG_CTRL3, AXP22X_CHRG_CTRL3), regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IPSOUT_V_HIGH_L), regmap_reg_range(AXP20X_TIMER_CTRL, AXP20X_TIMER_CTRL), regmap_reg_range(AXP22X_GPIO_STATE, AXP22X_GPIO_STATE), @@ -762,6 +764,16 @@ static const struct mfd_cell axp809_cells[] = { }, }; +static struct regulator_bulk_data vcc_vb = { + .supply = "vcc-vb", +}; + +static struct regulator_userspace_consumer_data vcc_vb_data = { + .name = "vcc-vb", + .num_supplies = 1, + .supplies = &vcc_vb, +}; + static const struct mfd_cell axp813_cells[] = { { .name = "axp221-pek", @@ -778,6 +790,16 @@ static const struct mfd_cell axp813_cells[] = { }, { .name = "axp20x-battery-power-supply", .of_compatible = "x-powers,axp813-battery-power-supply", + }, { + .name = "axp20x-usb-power-supply", + .of_compatible = "x-powers,axp813-usb-power-supply", + }, { + .name = "axp20x-leds", + .of_compatible = "x-powers,axp813-leds", + }, { + .name = "reg-userspace-consumer", + .platform_data = &vcc_vb_data, + .pdata_size = sizeof(vcc_vb_data), }, };