diff options
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/Kconfig | 14 | ||||
| -rw-r--r-- | drivers/leds/Makefile | 2 | ||||
| -rw-r--r-- | drivers/leds/leds-clevo-mail.c | 2 | ||||
| -rw-r--r-- | drivers/leds/leds-max8997.c | 372 | ||||
| -rw-r--r-- | drivers/leds/leds-ot200.c | 171 | ||||
| -rw-r--r-- | drivers/leds/leds-ss4200.c | 2 |
6 files changed, 561 insertions, 2 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 897a77dfa9d7..9ca28fced2b9 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -396,6 +396,20 @@ config LEDS_TCA6507 LED driver chips accessed via the I2C bus. Driver support brightness control and hardware-assisted blinking. +config LEDS_MAX8997 + tristate "LED support for MAX8997 PMIC" + depends on LEDS_CLASS && MFD_MAX8997 + help + This option enables support for on-chip LED drivers on + MAXIM MAX8997 PMIC. + +config LEDS_OT200 + tristate "LED support for the Bachmann OT200" + depends on LEDS_CLASS && HAS_IOMEM + help + This option enables support for the LEDs on the Bachmann OT200. + Say Y to enable LEDs on the Bachmann OT200. + config LEDS_TRIGGERS bool "LED Trigger support" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 5c9dc4b000d5..1fc6875a8b20 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -28,6 +28,7 @@ obj-$(CONFIG_LEDS_LP5523) += leds-lp5523.o obj-$(CONFIG_LEDS_TCA6507) += leds-tca6507.o obj-$(CONFIG_LEDS_CLEVO_MAIL) += leds-clevo-mail.o obj-$(CONFIG_LEDS_HP6XX) += leds-hp6xx.o +obj-$(CONFIG_LEDS_OT200) += leds-ot200.o obj-$(CONFIG_LEDS_FSG) += leds-fsg.o obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o @@ -44,6 +45,7 @@ obj-$(CONFIG_LEDS_NS2) += leds-ns2.o obj-$(CONFIG_LEDS_NETXBIG) += leds-netxbig.o obj-$(CONFIG_LEDS_ASIC3) += leds-asic3.o obj-$(CONFIG_LEDS_RENESAS_TPU) += leds-renesas-tpu.o +obj-$(CONFIG_LEDS_MAX8997) += leds-max8997.o # LED SPI Drivers obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c index a498135a4e80..1ed1677c916f 100644 --- a/drivers/leds/leds-clevo-mail.c +++ b/drivers/leds/leds-clevo-mail.c @@ -18,7 +18,7 @@ MODULE_AUTHOR("Márton Németh <nm127@freemail.hu>"); MODULE_DESCRIPTION("Clevo mail LED driver"); MODULE_LICENSE("GPL"); -static unsigned int __initdata nodetect; +static bool __initdata nodetect; module_param_named(nodetect, nodetect, bool, 0); MODULE_PARM_DESC(nodetect, "Skip DMI hardware detection"); diff --git a/drivers/leds/leds-max8997.c b/drivers/leds/leds-max8997.c new file mode 100644 index 000000000000..f4c0e37fad1e --- /dev/null +++ b/drivers/leds/leds-max8997.c @@ -0,0 +1,372 @@ +/* + * leds-max8997.c - LED class driver for MAX8997 LEDs. + * + * Copyright (C) 2011 Samsung Electronics + * Donggeun Kim <dg77.kim@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/module.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/workqueue.h> +#include <linux/leds.h> +#include <linux/mfd/max8997.h> +#include <linux/mfd/max8997-private.h> +#include <linux/platform_device.h> + +#define MAX8997_LED_FLASH_SHIFT 3 +#define MAX8997_LED_FLASH_CUR_MASK 0xf8 +#define MAX8997_LED_MOVIE_SHIFT 4 +#define MAX8997_LED_MOVIE_CUR_MASK 0xf0 + +#define MAX8997_LED_FLASH_MAX_BRIGHTNESS 0x1f +#define MAX8997_LED_MOVIE_MAX_BRIGHTNESS 0xf +#define MAX8997_LED_NONE_MAX_BRIGHTNESS 0 + +#define MAX8997_LED0_FLASH_MASK 0x1 +#define MAX8997_LED0_FLASH_PIN_MASK 0x5 +#define MAX8997_LED0_MOVIE_MASK 0x8 +#define MAX8997_LED0_MOVIE_PIN_MASK 0x28 + +#define MAX8997_LED1_FLASH_MASK 0x2 +#define MAX8997_LED1_FLASH_PIN_MASK 0x6 +#define MAX8997_LED1_MOVIE_MASK 0x10 +#define MAX8997_LED1_MOVIE_PIN_MASK 0x30 + +#define MAX8997_LED_BOOST_ENABLE_MASK (1 << 6) + +struct max8997_led { + struct max8997_dev *iodev; + struct led_classdev cdev; + bool enabled; + int id; + enum max8997_led_mode led_mode; + struct mutex mutex; +}; + +static void max8997_led_clear_mode(struct max8997_led *led, + enum max8997_led_mode mode) +{ + struct i2c_client *client = led->iodev->i2c; + u8 val = 0, mask = 0; + int ret; + + switch (mode) { + case MAX8997_FLASH_MODE: + mask = led->id ? + MAX8997_LED1_FLASH_MASK : MAX8997_LED0_FLASH_MASK; + break; + case MAX8997_MOVIE_MODE: + mask = led->id ? + MAX8997_LED1_MOVIE_MASK : MAX8997_LED0_MOVIE_MASK; + break; + case MAX8997_FLASH_PIN_CONTROL_MODE: + mask = led->id ? + MAX8997_LED1_FLASH_PIN_MASK : MAX8997_LED0_FLASH_PIN_MASK; + break; + case MAX8997_MOVIE_PIN_CONTROL_MODE: + mask = led->id ? + MAX8997_LED1_MOVIE_PIN_MASK : MAX8997_LED0_MOVIE_PIN_MASK; + break; + default: + break; + } + + if (mask) { + ret = max8997_update_reg(client, + MAX8997_REG_LEN_CNTL, val, mask); + if (ret) + dev_err(led->iodev->dev, + "failed to update register(%d)\n", ret); + } +} + +static void max8997_led_set_mode(struct max8997_led *led, + enum max8997_led_mode mode) +{ + int ret; + struct i2c_client *client = led->iodev->i2c; + u8 mask = 0; + + /* First, clear the previous mode */ + max8997_led_clear_mode(led, led->led_mode); + + switch (mode) { + case MAX8997_FLASH_MODE: + mask = led->id ? + MAX8997_LED1_FLASH_MASK : MAX8997_LED0_FLASH_MASK; + led->cdev.max_brightness = MAX8997_LED_FLASH_MAX_BRIGHTNESS; + break; + case MAX8997_MOVIE_MODE: + mask = led->id ? + MAX8997_LED1_MOVIE_MASK : MAX8997_LED0_MOVIE_MASK; + led->cdev.max_brightness = MAX8997_LED_MOVIE_MAX_BRIGHTNESS; + break; + case MAX8997_FLASH_PIN_CONTROL_MODE: + mask = led->id ? + MAX8997_LED1_FLASH_PIN_MASK : MAX8997_LED0_FLASH_PIN_MASK; + led->cdev.max_brightness = MAX8997_LED_FLASH_MAX_BRIGHTNESS; + break; + case MAX8997_MOVIE_PIN_CONTROL_MODE: + mask = led->id ? + MAX8997_LED1_MOVIE_PIN_MASK : MAX8997_LED0_MOVIE_PIN_MASK; + led->cdev.max_brightness = MAX8997_LED_MOVIE_MAX_BRIGHTNESS; + break; + default: + led->cdev.max_brightness = MAX8997_LED_NONE_MAX_BRIGHTNESS; + break; + } + + if (mask) { + ret = max8997_update_reg(client, + MAX8997_REG_LEN_CNTL, mask, mask); + if (ret) + dev_err(led->iodev->dev, + "failed to update register(%d)\n", ret); + } + + led->led_mode = mode; +} + +static void max8997_led_enable(struct max8997_led *led, bool enable) +{ + int ret; + struct i2c_client *client = led->iodev->i2c; + u8 val = 0, mask = MAX8997_LED_BOOST_ENABLE_MASK; + + if (led->enabled == enable) + return; + + val = enable ? MAX8997_LED_BOOST_ENABLE_MASK : 0; + + ret = max8997_update_reg(client, MAX8997_REG_BOOST_CNTL, val, mask); + if (ret) + dev_err(led->iodev->dev, + "failed to update register(%d)\n", ret); + + led->enabled = enable; +} + +static void max8997_led_set_current(struct max8997_led *led, + enum led_brightness value) +{ + int ret; + struct i2c_client *client = led->iodev->i2c; + u8 val = 0, mask = 0, reg = 0; + + switch (led->led_mode) { + case MAX8997_FLASH_MODE: + case MAX8997_FLASH_PIN_CONTROL_MODE: + val = value << MAX8997_LED_FLASH_SHIFT; + mask = MAX8997_LED_FLASH_CUR_MASK; + reg = led->id ? MAX8997_REG_FLASH2_CUR : MAX8997_REG_FLASH1_CUR; + break; + case MAX8997_MOVIE_MODE: + case MAX8997_MOVIE_PIN_CONTROL_MODE: + val = value << MAX8997_LED_MOVIE_SHIFT; + mask = MAX8997_LED_MOVIE_CUR_MASK; + reg = MAX8997_REG_MOVIE_CUR; + break; + default: + break; + } + + if (mask) { + ret = max8997_update_reg(client, reg, val, mask); + if (ret) + dev_err(led->iodev->dev, + "failed to update register(%d)\n", ret); + } +} + +static void max8997_led_brightness_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct max8997_led *led = + container_of(led_cdev, struct max8997_led, cdev); + + if (value) { + max8997_led_set_current(led, value); + max8997_led_enable(led, true); + } else { + max8997_led_set_current(led, value); + max8997_led_enable(led, false); + } +} + +static ssize_t max8997_led_show_mode(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct led_classdev *led_cdev = dev_get_drvdata(dev); + struct max8997_led *led = + container_of(led_cdev, struct max8997_led, cdev); + ssize_t ret = 0; + + mutex_lock(&led->mutex); + + switch (led->led_mode) { + case MAX8997_FLASH_MODE: + ret += sprintf(buf, "FLASH\n"); + break; + case MAX8997_MOVIE_MODE: + ret += sprintf(buf, "MOVIE\n"); + break; + case MAX8997_FLASH_PIN_CONTROL_MODE: + ret += sprintf(buf, "FLASH_PIN_CONTROL\n"); + break; + case MAX8997_MOVIE_PIN_CONTROL_MODE: + ret += sprintf(buf, "MOVIE_PIN_CONTROL\n"); + break; + default: + ret += sprintf(buf, "NONE\n"); + break; + } + + mutex_unlock(&led->mutex); + + return ret; +} + +static ssize_t max8997_led_store_mode(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct led_classdev *led_cdev = dev_get_drvdata(dev); + struct max8997_led *led = + container_of(led_cdev, struct max8997_led, cdev); + enum max8997_led_mode mode; + + mutex_lock(&led->mutex); + + if (!strncmp(buf, "FLASH_PIN_CONTROL", 17)) + mode = MAX8997_FLASH_PIN_CONTROL_MODE; + else if (!strncmp(buf, "MOVIE_PIN_CONTROL", 17)) + mode = MAX8997_MOVIE_PIN_CONTROL_MODE; + else if (!strncmp(buf, "FLASH", 5)) + mode = MAX8997_FLASH_MODE; + else if (!strncmp(buf, "MOVIE", 5)) + mode = MAX8997_MOVIE_MODE; + else + mode = MAX8997_NONE; + + max8997_led_set_mode(led, mode); + + mutex_unlock(&led->mutex); + + return size; +} + +static DEVICE_ATTR(mode, 0644, max8997_led_show_mode, max8997_led_store_mode); + +static int __devinit max8997_led_probe(struct platform_device *pdev) +{ + struct max8997_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct max8997_platform_data *pdata = dev_get_platdata(iodev->dev); + struct max8997_led *led; + char name[20]; + int ret = 0; + + if (pdata == NULL) { + dev_err(&pdev->dev, "no platform data\n"); + return -ENODEV; + } + + led = kzalloc(sizeof(*led), GFP_KERNEL); + if (led == NULL) { + ret = -ENOMEM; + goto err_mem; + } + + led->id = pdev->id; + snprintf(name, sizeof(name), "max8997-led%d", pdev->id); + + led->cdev.name = name; + led->cdev.brightness_set = max8997_led_brightness_set; + led->cdev.flags |= LED_CORE_SUSPENDRESUME; + led->cdev.brightness = 0; + led->iodev = iodev; + + /* initialize mode and brightness according to platform_data */ + if (pdata->led_pdata) { + u8 mode = 0, brightness = 0; + + mode = pdata->led_pdata->mode[led->id]; + brightness = pdata->led_pdata->brightness[led->id]; + + max8997_led_set_mode(led, pdata->led_pdata->mode[led->id]); + + if (brightness > led->cdev.max_brightness) + brightness = led->cdev.max_brightness; + max8997_led_set_current(led, brightness); + led->cdev.brightness = brightness; + } else { + max8997_led_set_mode(led, MAX8997_NONE); + max8997_led_set_current(led, 0); + } + + mutex_init(&led->mutex); + + platform_set_drvdata(pdev, led); + + ret = led_classdev_register(&pdev->dev, &led->cdev); + if (ret < 0) + goto err_led; + + ret = device_create_file(led->cdev.dev, &dev_attr_mode); + if (ret != 0) { + dev_err(&pdev->dev, + "failed to create file: %d\n", ret); + goto err_file; + } + + return 0; + +err_file: + led_classdev_unregister(&led->cdev); +err_led: + kfree(led); +err_mem: + return ret; +} + +static int __devexit max8997_led_remove(struct platform_device *pdev) +{ + struct max8997_led *led = platform_get_drvdata(pdev); + + device_remove_file(led->cdev.dev, &dev_attr_mode); + led_classdev_unregister(&led->cdev); + kfree(led); + + return 0; +} + +static struct platform_driver max8997_led_driver = { + .driver = { + .name = "max8997-led", + .owner = THIS_MODULE, + }, + .probe = max8997_led_probe, + .remove = __devexit_p(max8997_led_remove), +}; + +static int __init max8997_led_init(void) +{ + return platform_driver_register(&max8997_led_driver); +} +module_init(max8997_led_init); + +static void __exit max8997_led_exit(void) +{ + platform_driver_unregister(&max8997_led_driver); +} +module_exit(max8997_led_exit); + +MODULE_AUTHOR("Donggeun Kim <dg77.kim@samsung.com>"); +MODULE_DESCRIPTION("MAX8997 LED driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:max8997-led"); diff --git a/drivers/leds/leds-ot200.c b/drivers/leds/leds-ot200.c new file mode 100644 index 000000000000..c4646825a620 --- /dev/null +++ b/drivers/leds/leds-ot200.c @@ -0,0 +1,171 @@ +/* + * Bachmann ot200 leds driver. + * + * Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> + * Christian Gmeiner <christian.gmeiner@gmail.com> + * + * License: GPL as published by the FSF. + */ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/leds.h> +#include <linux/io.h> +#include <linux/module.h> + + +struct ot200_led { + struct led_classdev cdev; + const char *name; + unsigned long port; + u8 mask; +}; + +/* + * The device has three leds on the back panel (led_err, led_init and led_run) + * and can handle up to seven leds on the front panel. + */ + +static struct ot200_led leds[] = { + { + .name = "led_run", + .port = 0x5a, + .mask = BIT(0), + }, + { + .name = "led_init", + .port = 0x5a, + .mask = BIT(1), + }, + { + .name = "led_err", + .port = 0x5a, + .mask = BIT(2), + }, + { + .name = "led_1", + .port = 0x49, + .mask = BIT(7), + }, + { + .name = "led_2", + .port = 0x49, + .mask = BIT(6), + }, + { + .name = "led_3", + .port = 0x49, + .mask = BIT(5), + }, + { + .name = "led_4", + .port = 0x49, + .mask = BIT(4), + }, + { + .name = "led_5", + .port = 0x49, + .mask = BIT(3), + }, + { + .name = "led_6", + .port = 0x49, + .mask = BIT(2), + }, + { + .name = "led_7", + .port = 0x49, + .mask = BIT(1), + } +}; + +static DEFINE_SPINLOCK(value_lock); + +/* + * we need to store the current led states, as it is not + * possible to read the current led state via inb(). + */ +static u8 leds_back; +static u8 leds_front; + +static void ot200_led_brightness_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct ot200_led *led = container_of(led_cdev, struct ot200_led, cdev); + u8 *val; + unsigned long flags; + + spin_lock_irqsave(&value_lock, flags); + + if (led->port == 0x49) + val = &leds_front; + else if (led->port == 0x5a) + val = &leds_back; + else + BUG(); + + if (value == LED_OFF) + *val &= ~led->mask; + else + *val |= led->mask; + + outb(*val, led->port); + spin_unlock_irqrestore(&value_lock, flags); +} + +static int __devinit ot200_led_probe(struct platform_device *pdev) +{ + int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(leds); i++) { + + leds[i].cdev.name = leds[i].name; + leds[i].cdev.brightness_set = ot200_led_brightness_set; + + ret = led_classdev_register(&pdev->dev, &leds[i].cdev); + if (ret < 0) + goto err; + } + + leds_front = 0; /* turn off all front leds */ + leds_back = BIT(1); /* turn on init led */ + outb(leds_front, 0x49); + outb(leds_back, 0x5a); + + return 0; + +err: + for (i = i - 1; i >= 0; i--) + led_classdev_unregister(&leds[i].cdev); + + return ret; +} + +static int __devexit ot200_led_remove(struct platform_device *pdev) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(leds); i++) + led_classdev_unregister(&leds[i].cdev); + + return 0; +} + +static struct platform_driver ot200_led_driver = { + .probe = ot200_led_probe, + .remove = __devexit_p(ot200_led_remove), + .driver = { + .name = "leds-ot200", + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(ot200_led_driver); + +MODULE_AUTHOR("Sebastian A. Siewior <bigeasy@linutronix.de>"); +MODULE_DESCRIPTION("ot200 LED driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:leds-ot200"); diff --git a/drivers/leds/leds-ss4200.c b/drivers/leds/leds-ss4200.c index 614ebebaaa28..57371e1485ab 100644 --- a/drivers/leds/leds-ss4200.c +++ b/drivers/leds/leds-ss4200.c @@ -79,7 +79,7 @@ static int __init ss4200_led_dmi_callback(const struct dmi_system_id *id) return 1; } -static unsigned int __initdata nodetect; +static bool __initdata nodetect; module_param_named(nodetect, nodetect, bool, 0); MODULE_PARM_DESC(nodetect, "Skip DMI-based hardware detection"); |