Loading Documentation/devicetree/bindings/leds/leds-tlc591xx.txt 0 → 100644 +40 −0 Original line number Diff line number Diff line LEDs connected to tlc59116 or tlc59108 Required properties - compatible: should be "ti,tlc59116" or "ti,tlc59108" - #address-cells: must be 1 - #size-cells: must be 0 - reg: typically 0x68 Each led is represented as a sub-node of the ti,tlc59116. See Documentation/devicetree/bindings/leds/common.txt LED sub-node properties: - reg: number of LED line, 0 to 15 or 0 to 7 - label: (optional) name of LED - linux,default-trigger : (optional) Examples: tlc59116@68 { #address-cells = <1>; #size-cells = <0>; compatible = "ti,tlc59116"; reg = <0x68>; wan@0 { label = "wrt1900ac:amber:wan"; reg = <0x0>; }; 2g@2 { label = "wrt1900ac:white:2g"; reg = <0x2>; }; alive@9 { label = "wrt1900ac:green:alive"; reg = <0x9>; linux,default_trigger = "heartbeat"; }; }; drivers/leds/Kconfig +8 −0 Original line number Diff line number Diff line Loading @@ -446,6 +446,14 @@ config LEDS_TCA6507 LED driver chips accessed via the I2C bus. Driver support brightness control and hardware-assisted blinking. config LEDS_TLC591XX tristate "LED driver for TLC59108 and TLC59116 controllers" depends on LEDS_CLASS && I2C select REGMAP_I2C help This option enables support for Texas Instruments TLC59108 and TLC59116 LED controllers. config LEDS_MAX8997 tristate "LED support for MAX8997 PMIC" depends on LEDS_CLASS && MFD_MAX8997 Loading drivers/leds/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -29,6 +29,7 @@ obj-$(CONFIG_LEDS_LP5562) += leds-lp5562.o obj-$(CONFIG_LEDS_LP8501) += leds-lp8501.o obj-$(CONFIG_LEDS_LP8788) += leds-lp8788.o obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o obj-$(CONFIG_LEDS_TLC591XX) += leds-tlc591xx.o obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o obj-$(CONFIG_LEDS_IPAQ_MICRO) += leds-ipaq-micro.o obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o Loading drivers/leds/leds-tlc591xx.c 0 → 100644 +300 −0 Original line number Diff line number Diff line /* * Copyright 2014 Belkin Inc. * Copyright 2015 Andrew Lunn <andrew@lunn.ch> * * 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; version 2 of the License. */ #include <linux/i2c.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/workqueue.h> #define TLC591XX_MAX_LEDS 16 #define TLC591XX_REG_MODE1 0x00 #define MODE1_RESPON_ADDR_MASK 0xF0 #define MODE1_NORMAL_MODE (0 << 4) #define MODE1_SPEED_MODE (1 << 4) #define TLC591XX_REG_MODE2 0x01 #define MODE2_DIM (0 << 5) #define MODE2_BLINK (1 << 5) #define MODE2_OCH_STOP (0 << 3) #define MODE2_OCH_ACK (1 << 3) #define TLC591XX_REG_PWM(x) (0x02 + (x)) #define TLC591XX_REG_GRPPWM 0x12 #define TLC591XX_REG_GRPFREQ 0x13 /* LED Driver Output State, determine the source that drives LED outputs */ #define LEDOUT_OFF 0x0 /* Output LOW */ #define LEDOUT_ON 0x1 /* Output HI-Z */ #define LEDOUT_DIM 0x2 /* Dimming */ #define LEDOUT_BLINK 0x3 /* Blinking */ #define LEDOUT_MASK 0x3 #define ldev_to_led(c) container_of(c, struct tlc591xx_led, ldev) #define work_to_led(work) container_of(work, struct tlc591xx_led, work) struct tlc591xx_led { bool active; unsigned int led_no; struct led_classdev ldev; struct work_struct work; struct tlc591xx_priv *priv; }; struct tlc591xx_priv { struct tlc591xx_led leds[TLC591XX_MAX_LEDS]; struct regmap *regmap; unsigned int reg_ledout_offset; }; struct tlc591xx { unsigned int max_leds; unsigned int reg_ledout_offset; }; static const struct tlc591xx tlc59116 = { .max_leds = 16, .reg_ledout_offset = 0x14, }; static const struct tlc591xx tlc59108 = { .max_leds = 8, .reg_ledout_offset = 0x0c, }; static int tlc591xx_set_mode(struct regmap *regmap, u8 mode) { int err; u8 val; err = regmap_write(regmap, TLC591XX_REG_MODE1, MODE1_NORMAL_MODE); if (err) return err; val = MODE2_OCH_STOP | mode; return regmap_write(regmap, TLC591XX_REG_MODE2, val); } static int tlc591xx_set_ledout(struct tlc591xx_priv *priv, struct tlc591xx_led *led, u8 val) { unsigned int i = (led->led_no % 4) * 2; unsigned int mask = LEDOUT_MASK << i; unsigned int addr = priv->reg_ledout_offset + (led->led_no >> 2); val = val << i; return regmap_update_bits(priv->regmap, addr, mask, val); } static int tlc591xx_set_pwm(struct tlc591xx_priv *priv, struct tlc591xx_led *led, u8 brightness) { u8 pwm = TLC591XX_REG_PWM(led->led_no); return regmap_write(priv->regmap, pwm, brightness); } static void tlc591xx_led_work(struct work_struct *work) { struct tlc591xx_led *led = work_to_led(work); struct tlc591xx_priv *priv = led->priv; enum led_brightness brightness = led->ldev.brightness; int err; switch (brightness) { case 0: err = tlc591xx_set_ledout(priv, led, LEDOUT_OFF); break; case LED_FULL: err = tlc591xx_set_ledout(priv, led, LEDOUT_ON); break; default: err = tlc591xx_set_ledout(priv, led, LEDOUT_DIM); if (!err) err = tlc591xx_set_pwm(priv, led, brightness); } if (err) dev_err(led->ldev.dev, "Failed setting brightness\n"); } static void tlc591xx_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct tlc591xx_led *led = ldev_to_led(led_cdev); led->ldev.brightness = brightness; schedule_work(&led->work); } static void tlc591xx_destroy_devices(struct tlc591xx_priv *priv, unsigned int j) { int i = j; while (--i >= 0) { if (priv->leds[i].active) { led_classdev_unregister(&priv->leds[i].ldev); cancel_work_sync(&priv->leds[i].work); } } } static int tlc591xx_configure(struct device *dev, struct tlc591xx_priv *priv, const struct tlc591xx *tlc591xx) { unsigned int i; int err = 0; tlc591xx_set_mode(priv->regmap, MODE2_DIM); for (i = 0; i < TLC591XX_MAX_LEDS; i++) { struct tlc591xx_led *led = &priv->leds[i]; if (!led->active) continue; led->priv = priv; led->led_no = i; led->ldev.brightness_set = tlc591xx_brightness_set; led->ldev.max_brightness = LED_FULL; INIT_WORK(&led->work, tlc591xx_led_work); err = led_classdev_register(dev, &led->ldev); if (err < 0) { dev_err(dev, "couldn't register LED %s\n", led->ldev.name); goto exit; } } return 0; exit: tlc591xx_destroy_devices(priv, i); return err; } static const struct regmap_config tlc591xx_regmap = { .reg_bits = 8, .val_bits = 8, .max_register = 0x1e, }; static const struct of_device_id of_tlc591xx_leds_match[] = { { .compatible = "ti,tlc59116", .data = &tlc59116 }, { .compatible = "ti,tlc59108", .data = &tlc59108 }, {}, }; MODULE_DEVICE_TABLE(of, of_tlc591xx_leds_match); static int tlc591xx_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device_node *np = client->dev.of_node, *child; struct device *dev = &client->dev; const struct of_device_id *match; const struct tlc591xx *tlc591xx; struct tlc591xx_priv *priv; int err, count, reg; match = of_match_device(of_tlc591xx_leds_match, dev); if (!match) return -ENODEV; tlc591xx = match->data; if (!np) return -ENODEV; count = of_get_child_count(np); if (!count || count > tlc591xx->max_leds) return -EINVAL; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->regmap = devm_regmap_init_i2c(client, &tlc591xx_regmap); if (IS_ERR(priv->regmap)) { err = PTR_ERR(priv->regmap); dev_err(dev, "Failed to allocate register map: %d\n", err); return err; } priv->reg_ledout_offset = tlc591xx->reg_ledout_offset; i2c_set_clientdata(client, priv); for_each_child_of_node(np, child) { err = of_property_read_u32(child, "reg", ®); if (err) return err; if (reg < 0 || reg >= tlc591xx->max_leds) return -EINVAL; if (priv->leds[reg].active) return -EINVAL; priv->leds[reg].active = true; priv->leds[reg].ldev.name = of_get_property(child, "label", NULL) ? : child->name; priv->leds[reg].ldev.default_trigger = of_get_property(child, "linux,default-trigger", NULL); } return tlc591xx_configure(dev, priv, tlc591xx); } static int tlc591xx_remove(struct i2c_client *client) { struct tlc591xx_priv *priv = i2c_get_clientdata(client); tlc591xx_destroy_devices(priv, TLC591XX_MAX_LEDS); return 0; } static const struct i2c_device_id tlc591xx_id[] = { { "tlc59116" }, { "tlc59108" }, {}, }; MODULE_DEVICE_TABLE(i2c, tlc591xx_id); static struct i2c_driver tlc591xx_driver = { .driver = { .name = "tlc591xx", .of_match_table = of_match_ptr(of_tlc591xx_leds_match), }, .probe = tlc591xx_probe, .remove = tlc591xx_remove, .id_table = tlc591xx_id, }; module_i2c_driver(tlc591xx_driver); MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("TLC591XX LED driver"); Loading
Documentation/devicetree/bindings/leds/leds-tlc591xx.txt 0 → 100644 +40 −0 Original line number Diff line number Diff line LEDs connected to tlc59116 or tlc59108 Required properties - compatible: should be "ti,tlc59116" or "ti,tlc59108" - #address-cells: must be 1 - #size-cells: must be 0 - reg: typically 0x68 Each led is represented as a sub-node of the ti,tlc59116. See Documentation/devicetree/bindings/leds/common.txt LED sub-node properties: - reg: number of LED line, 0 to 15 or 0 to 7 - label: (optional) name of LED - linux,default-trigger : (optional) Examples: tlc59116@68 { #address-cells = <1>; #size-cells = <0>; compatible = "ti,tlc59116"; reg = <0x68>; wan@0 { label = "wrt1900ac:amber:wan"; reg = <0x0>; }; 2g@2 { label = "wrt1900ac:white:2g"; reg = <0x2>; }; alive@9 { label = "wrt1900ac:green:alive"; reg = <0x9>; linux,default_trigger = "heartbeat"; }; };
drivers/leds/Kconfig +8 −0 Original line number Diff line number Diff line Loading @@ -446,6 +446,14 @@ config LEDS_TCA6507 LED driver chips accessed via the I2C bus. Driver support brightness control and hardware-assisted blinking. config LEDS_TLC591XX tristate "LED driver for TLC59108 and TLC59116 controllers" depends on LEDS_CLASS && I2C select REGMAP_I2C help This option enables support for Texas Instruments TLC59108 and TLC59116 LED controllers. config LEDS_MAX8997 tristate "LED support for MAX8997 PMIC" depends on LEDS_CLASS && MFD_MAX8997 Loading
drivers/leds/Makefile +1 −0 Original line number Diff line number Diff line Loading @@ -29,6 +29,7 @@ obj-$(CONFIG_LEDS_LP5562) += leds-lp5562.o obj-$(CONFIG_LEDS_LP8501) += leds-lp8501.o obj-$(CONFIG_LEDS_LP8788) += leds-lp8788.o obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o obj-$(CONFIG_LEDS_TLC591XX) += leds-tlc591xx.o obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o obj-$(CONFIG_LEDS_IPAQ_MICRO) += leds-ipaq-micro.o obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o Loading
drivers/leds/leds-tlc591xx.c 0 → 100644 +300 −0 Original line number Diff line number Diff line /* * Copyright 2014 Belkin Inc. * Copyright 2015 Andrew Lunn <andrew@lunn.ch> * * 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; version 2 of the License. */ #include <linux/i2c.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/workqueue.h> #define TLC591XX_MAX_LEDS 16 #define TLC591XX_REG_MODE1 0x00 #define MODE1_RESPON_ADDR_MASK 0xF0 #define MODE1_NORMAL_MODE (0 << 4) #define MODE1_SPEED_MODE (1 << 4) #define TLC591XX_REG_MODE2 0x01 #define MODE2_DIM (0 << 5) #define MODE2_BLINK (1 << 5) #define MODE2_OCH_STOP (0 << 3) #define MODE2_OCH_ACK (1 << 3) #define TLC591XX_REG_PWM(x) (0x02 + (x)) #define TLC591XX_REG_GRPPWM 0x12 #define TLC591XX_REG_GRPFREQ 0x13 /* LED Driver Output State, determine the source that drives LED outputs */ #define LEDOUT_OFF 0x0 /* Output LOW */ #define LEDOUT_ON 0x1 /* Output HI-Z */ #define LEDOUT_DIM 0x2 /* Dimming */ #define LEDOUT_BLINK 0x3 /* Blinking */ #define LEDOUT_MASK 0x3 #define ldev_to_led(c) container_of(c, struct tlc591xx_led, ldev) #define work_to_led(work) container_of(work, struct tlc591xx_led, work) struct tlc591xx_led { bool active; unsigned int led_no; struct led_classdev ldev; struct work_struct work; struct tlc591xx_priv *priv; }; struct tlc591xx_priv { struct tlc591xx_led leds[TLC591XX_MAX_LEDS]; struct regmap *regmap; unsigned int reg_ledout_offset; }; struct tlc591xx { unsigned int max_leds; unsigned int reg_ledout_offset; }; static const struct tlc591xx tlc59116 = { .max_leds = 16, .reg_ledout_offset = 0x14, }; static const struct tlc591xx tlc59108 = { .max_leds = 8, .reg_ledout_offset = 0x0c, }; static int tlc591xx_set_mode(struct regmap *regmap, u8 mode) { int err; u8 val; err = regmap_write(regmap, TLC591XX_REG_MODE1, MODE1_NORMAL_MODE); if (err) return err; val = MODE2_OCH_STOP | mode; return regmap_write(regmap, TLC591XX_REG_MODE2, val); } static int tlc591xx_set_ledout(struct tlc591xx_priv *priv, struct tlc591xx_led *led, u8 val) { unsigned int i = (led->led_no % 4) * 2; unsigned int mask = LEDOUT_MASK << i; unsigned int addr = priv->reg_ledout_offset + (led->led_no >> 2); val = val << i; return regmap_update_bits(priv->regmap, addr, mask, val); } static int tlc591xx_set_pwm(struct tlc591xx_priv *priv, struct tlc591xx_led *led, u8 brightness) { u8 pwm = TLC591XX_REG_PWM(led->led_no); return regmap_write(priv->regmap, pwm, brightness); } static void tlc591xx_led_work(struct work_struct *work) { struct tlc591xx_led *led = work_to_led(work); struct tlc591xx_priv *priv = led->priv; enum led_brightness brightness = led->ldev.brightness; int err; switch (brightness) { case 0: err = tlc591xx_set_ledout(priv, led, LEDOUT_OFF); break; case LED_FULL: err = tlc591xx_set_ledout(priv, led, LEDOUT_ON); break; default: err = tlc591xx_set_ledout(priv, led, LEDOUT_DIM); if (!err) err = tlc591xx_set_pwm(priv, led, brightness); } if (err) dev_err(led->ldev.dev, "Failed setting brightness\n"); } static void tlc591xx_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct tlc591xx_led *led = ldev_to_led(led_cdev); led->ldev.brightness = brightness; schedule_work(&led->work); } static void tlc591xx_destroy_devices(struct tlc591xx_priv *priv, unsigned int j) { int i = j; while (--i >= 0) { if (priv->leds[i].active) { led_classdev_unregister(&priv->leds[i].ldev); cancel_work_sync(&priv->leds[i].work); } } } static int tlc591xx_configure(struct device *dev, struct tlc591xx_priv *priv, const struct tlc591xx *tlc591xx) { unsigned int i; int err = 0; tlc591xx_set_mode(priv->regmap, MODE2_DIM); for (i = 0; i < TLC591XX_MAX_LEDS; i++) { struct tlc591xx_led *led = &priv->leds[i]; if (!led->active) continue; led->priv = priv; led->led_no = i; led->ldev.brightness_set = tlc591xx_brightness_set; led->ldev.max_brightness = LED_FULL; INIT_WORK(&led->work, tlc591xx_led_work); err = led_classdev_register(dev, &led->ldev); if (err < 0) { dev_err(dev, "couldn't register LED %s\n", led->ldev.name); goto exit; } } return 0; exit: tlc591xx_destroy_devices(priv, i); return err; } static const struct regmap_config tlc591xx_regmap = { .reg_bits = 8, .val_bits = 8, .max_register = 0x1e, }; static const struct of_device_id of_tlc591xx_leds_match[] = { { .compatible = "ti,tlc59116", .data = &tlc59116 }, { .compatible = "ti,tlc59108", .data = &tlc59108 }, {}, }; MODULE_DEVICE_TABLE(of, of_tlc591xx_leds_match); static int tlc591xx_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device_node *np = client->dev.of_node, *child; struct device *dev = &client->dev; const struct of_device_id *match; const struct tlc591xx *tlc591xx; struct tlc591xx_priv *priv; int err, count, reg; match = of_match_device(of_tlc591xx_leds_match, dev); if (!match) return -ENODEV; tlc591xx = match->data; if (!np) return -ENODEV; count = of_get_child_count(np); if (!count || count > tlc591xx->max_leds) return -EINVAL; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -EIO; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->regmap = devm_regmap_init_i2c(client, &tlc591xx_regmap); if (IS_ERR(priv->regmap)) { err = PTR_ERR(priv->regmap); dev_err(dev, "Failed to allocate register map: %d\n", err); return err; } priv->reg_ledout_offset = tlc591xx->reg_ledout_offset; i2c_set_clientdata(client, priv); for_each_child_of_node(np, child) { err = of_property_read_u32(child, "reg", ®); if (err) return err; if (reg < 0 || reg >= tlc591xx->max_leds) return -EINVAL; if (priv->leds[reg].active) return -EINVAL; priv->leds[reg].active = true; priv->leds[reg].ldev.name = of_get_property(child, "label", NULL) ? : child->name; priv->leds[reg].ldev.default_trigger = of_get_property(child, "linux,default-trigger", NULL); } return tlc591xx_configure(dev, priv, tlc591xx); } static int tlc591xx_remove(struct i2c_client *client) { struct tlc591xx_priv *priv = i2c_get_clientdata(client); tlc591xx_destroy_devices(priv, TLC591XX_MAX_LEDS); return 0; } static const struct i2c_device_id tlc591xx_id[] = { { "tlc59116" }, { "tlc59108" }, {}, }; MODULE_DEVICE_TABLE(i2c, tlc591xx_id); static struct i2c_driver tlc591xx_driver = { .driver = { .name = "tlc591xx", .of_match_table = of_match_ptr(of_tlc591xx_leds_match), }, .probe = tlc591xx_probe, .remove = tlc591xx_remove, .id_table = tlc591xx_id, }; module_i2c_driver(tlc591xx_driver); MODULE_AUTHOR("Andrew Lunn <andrew@lunn.ch>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("TLC591XX LED driver");
