diff options
| -rw-r--r-- | drivers/leds/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/leds/Makefile | 1 | ||||
| -rw-r--r-- | drivers/leds/leds-pca9685.c | 213 | ||||
| -rw-r--r-- | include/linux/platform_data/leds-pca9685.h | 35 |
4 files changed, 0 insertions, 259 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 6de9dfbf61c1..6713dbb6bfda 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -300,16 +300,6 @@ config LEDS_PCA963X LED driver chip accessed via the I2C bus. Supported devices include PCA9633 and PCA9634 -config LEDS_PCA9685 - tristate "LED support for PCA9685 I2C chip" - depends on LEDS_CLASS - depends on I2C - help - This option enables support for LEDs connected to the PCA9685 - LED driver chip accessed via the I2C bus. - The PCA9685 offers 12-bit PWM (4095 levels of brightness) on - 16 individual channels. - config LEDS_WM831X_STATUS tristate "LED support for status LEDs on WM831x PMICs" depends on LEDS_CLASS diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 3cd76dbd9be2..8979b0b2c85e 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -36,7 +36,6 @@ obj-$(CONFIG_LEDS_OT200) += leds-ot200.o obj-$(CONFIG_LEDS_FSG) += leds-fsg.o obj-$(CONFIG_LEDS_PCA955X) += leds-pca955x.o obj-$(CONFIG_LEDS_PCA963X) += leds-pca963x.o -obj-$(CONFIG_LEDS_PCA9685) += leds-pca9685.o obj-$(CONFIG_LEDS_DA903X) += leds-da903x.o obj-$(CONFIG_LEDS_DA9052) += leds-da9052.o obj-$(CONFIG_LEDS_WM831X_STATUS) += leds-wm831x-status.o diff --git a/drivers/leds/leds-pca9685.c b/drivers/leds/leds-pca9685.c deleted file mode 100644 index 6e1ef3a9d6ef..000000000000 --- a/drivers/leds/leds-pca9685.c +++ /dev/null @@ -1,213 +0,0 @@ -/* - * Copyright 2013 Maximilian Güntner <maximilian.guentner@gmail.com> - * - * This file is subject to the terms and conditions of version 2 of - * the GNU General Public License. See the file COPYING in the main - * directory of this archive for more details. - * - * Based on leds-pca963x.c driver by - * Peter Meerwald <p.meerwald@bct-electronic.com> - * - * Driver for the NXP PCA9685 12-Bit PWM LED driver chip. - * - */ - -#include <linux/ctype.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/i2c.h> -#include <linux/leds.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/string.h> -#include <linux/workqueue.h> - -#include <linux/platform_data/leds-pca9685.h> - -/* Register Addresses */ -#define PCA9685_MODE1 0x00 -#define PCA9685_MODE2 0x01 -#define PCA9685_LED0_ON_L 0x06 -#define PCA9685_ALL_LED_ON_L 0xFA - -/* MODE1 Register */ -#define PCA9685_ALLCALL 0x00 -#define PCA9685_SLEEP 0x04 -#define PCA9685_AI 0x05 - -/* MODE2 Register */ -#define PCA9685_INVRT 0x04 -#define PCA9685_OUTDRV 0x02 - -static const struct i2c_device_id pca9685_id[] = { - { "pca9685", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, pca9685_id); - -struct pca9685_led { - struct i2c_client *client; - struct work_struct work; - u16 brightness; - struct led_classdev led_cdev; - int led_num; /* 0-15 */ - char name[32]; -}; - -static void pca9685_write_msg(struct i2c_client *client, u8 *buf, u8 len) -{ - struct i2c_msg msg = { - .addr = client->addr, - .flags = 0x00, - .len = len, - .buf = buf - }; - i2c_transfer(client->adapter, &msg, 1); -} - -static void pca9685_all_off(struct i2c_client *client) -{ - u8 i2c_buffer[5] = {PCA9685_ALL_LED_ON_L, 0x00, 0x00, 0x00, 0x10}; - pca9685_write_msg(client, i2c_buffer, 5); -} - -static void pca9685_led_work(struct work_struct *work) -{ - struct pca9685_led *pca9685; - u8 i2c_buffer[5]; - - pca9685 = container_of(work, struct pca9685_led, work); - i2c_buffer[0] = PCA9685_LED0_ON_L + 4 * pca9685->led_num; - /* - * 4095 is the maximum brightness, so we set the ON time to 0x1000 - * which disables the PWM generator for that LED - */ - if (pca9685->brightness == 4095) - *((__le16 *)(i2c_buffer+1)) = cpu_to_le16(0x1000); - else - *((__le16 *)(i2c_buffer+1)) = 0x0000; - - if (pca9685->brightness == 0) - *((__le16 *)(i2c_buffer+3)) = cpu_to_le16(0x1000); - else if (pca9685->brightness == 4095) - *((__le16 *)(i2c_buffer+3)) = 0x0000; - else - *((__le16 *)(i2c_buffer+3)) = cpu_to_le16(pca9685->brightness); - - pca9685_write_msg(pca9685->client, i2c_buffer, 5); -} - -static void pca9685_led_set(struct led_classdev *led_cdev, - enum led_brightness value) -{ - struct pca9685_led *pca9685; - pca9685 = container_of(led_cdev, struct pca9685_led, led_cdev); - pca9685->brightness = value; - - schedule_work(&pca9685->work); -} - -static int pca9685_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct pca9685_led *pca9685; - struct pca9685_platform_data *pdata; - int err; - u8 i; - - pdata = dev_get_platdata(&client->dev); - if (pdata) { - if (pdata->leds.num_leds < 1 || pdata->leds.num_leds > 15) { - dev_err(&client->dev, "board info must claim 1-16 LEDs"); - return -EINVAL; - } - } - - pca9685 = devm_kzalloc(&client->dev, 16 * sizeof(*pca9685), GFP_KERNEL); - if (!pca9685) - return -ENOMEM; - - i2c_set_clientdata(client, pca9685); - pca9685_all_off(client); - - for (i = 0; i < 16; i++) { - pca9685[i].client = client; - pca9685[i].led_num = i; - pca9685[i].name[0] = '\0'; - if (pdata && i < pdata->leds.num_leds) { - if (pdata->leds.leds[i].name) - strncpy(pca9685[i].name, - pdata->leds.leds[i].name, - sizeof(pca9685[i].name)-1); - if (pdata->leds.leds[i].default_trigger) - pca9685[i].led_cdev.default_trigger = - pdata->leds.leds[i].default_trigger; - } - if (strlen(pca9685[i].name) == 0) { - /* - * Write adapter and address to the name as well. - * Otherwise multiple chips attached to one host would - * not work. - */ - snprintf(pca9685[i].name, sizeof(pca9685[i].name), - "pca9685:%d:x%.2x:%d", - client->adapter->nr, client->addr, i); - } - pca9685[i].led_cdev.name = pca9685[i].name; - pca9685[i].led_cdev.max_brightness = 0xfff; - pca9685[i].led_cdev.brightness_set = pca9685_led_set; - - INIT_WORK(&pca9685[i].work, pca9685_led_work); - err = led_classdev_register(&client->dev, &pca9685[i].led_cdev); - if (err < 0) - goto exit; - } - - if (pdata) - i2c_smbus_write_byte_data(client, PCA9685_MODE2, - pdata->outdrv << PCA9685_OUTDRV | - pdata->inverted << PCA9685_INVRT); - else - i2c_smbus_write_byte_data(client, PCA9685_MODE2, - PCA9685_TOTEM_POLE << PCA9685_OUTDRV); - /* Enable Auto-Increment, enable oscillator, ALLCALL/SUBADDR disabled */ - i2c_smbus_write_byte_data(client, PCA9685_MODE1, BIT(PCA9685_AI)); - - return 0; - -exit: - while (i--) { - led_classdev_unregister(&pca9685[i].led_cdev); - cancel_work_sync(&pca9685[i].work); - } - return err; -} - -static int pca9685_remove(struct i2c_client *client) -{ - struct pca9685_led *pca9685 = i2c_get_clientdata(client); - u8 i; - - for (i = 0; i < 16; i++) { - led_classdev_unregister(&pca9685[i].led_cdev); - cancel_work_sync(&pca9685[i].work); - } - pca9685_all_off(client); - return 0; -} - -static struct i2c_driver pca9685_driver = { - .driver = { - .name = "leds-pca9685", - .owner = THIS_MODULE, - }, - .probe = pca9685_probe, - .remove = pca9685_remove, - .id_table = pca9685_id, -}; - -module_i2c_driver(pca9685_driver); - -MODULE_AUTHOR("Maximilian Güntner <maximilian.guentner@gmail.com>"); -MODULE_DESCRIPTION("PCA9685 LED Driver"); -MODULE_LICENSE("GPL v2"); diff --git a/include/linux/platform_data/leds-pca9685.h b/include/linux/platform_data/leds-pca9685.h deleted file mode 100644 index 778e9e4249cc..000000000000 --- a/include/linux/platform_data/leds-pca9685.h +++ /dev/null @@ -1,35 +0,0 @@ -/* - * Copyright 2013 Maximilian Güntner <maximilian.guentner@gmail.com> - * - * This file is subject to the terms and conditions of version 2 of - * the GNU General Public License. See the file COPYING in the main - * directory of this archive for more details. - * - * Based on leds-pca963x.h by Peter Meerwald <p.meerwald@bct-electronic.com> - * - * LED driver for the NXP PCA9685 PWM chip - * - */ - -#ifndef __LINUX_PCA9685_H -#define __LINUX_PCA9685_H - -#include <linux/leds.h> - -enum pca9685_outdrv { - PCA9685_OPEN_DRAIN, - PCA9685_TOTEM_POLE, -}; - -enum pca9685_inverted { - PCA9685_NOT_INVERTED, - PCA9685_INVERTED, -}; - -struct pca9685_platform_data { - struct led_platform_data leds; - enum pca9685_outdrv outdrv; - enum pca9685_inverted inverted; -}; - -#endif /* __LINUX_PCA9685_H */ |