aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--Documentation/devicetree/bindings/leds/leds-lp55xx.txt8
-rw-r--r--Documentation/devicetree/bindings/leds/leds-pwm.txt2
-rw-r--r--drivers/leds/Kconfig10
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/dell-led.c171
-rw-r--r--drivers/leds/leds-88pm860x.c5
-rw-r--r--drivers/leds/leds-adp5520.c5
-rw-r--r--drivers/leds/leds-bd2802.c4
-rw-r--r--drivers/leds/leds-da903x.c4
-rw-r--r--drivers/leds/leds-da9052.c3
-rw-r--r--drivers/leds/leds-lp5523.c3
-rw-r--r--drivers/leds/leds-pca9685.c213
-rw-r--r--drivers/leds/leds-pwm.c150
-rw-r--r--drivers/leds/leds-s3c24xx.c4
-rw-r--r--drivers/leds/leds-sunfire.c4
-rw-r--r--drivers/leds/trigger/ledtrig-cpu.c2
-rw-r--r--include/linux/dell-led.h10
-rw-r--r--include/linux/platform_data/leds-pca9685.h35
18 files changed, 267 insertions, 367 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
index c55b8c016a9e..1b66a413fb9d 100644
--- a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
@@ -1,7 +1,13 @@
Binding for TI/National Semiconductor LP55xx Led Drivers
Required properties:
-- compatible: "national,lp5521" or "national,lp5523" or "ti,lp5562" or "ti,lp8501"
+- compatible: one of
+ national,lp5521
+ national,lp5523
+ ti,lp55231
+ ti,lp5562
+ ti,lp8501
+
- reg: I2C slave address
- clock-mode: Input clock mode, (0: automode, 1: internal, 2: external)
diff --git a/Documentation/devicetree/bindings/leds/leds-pwm.txt b/Documentation/devicetree/bindings/leds/leds-pwm.txt
index 7297107cf832..6c6583c35f2f 100644
--- a/Documentation/devicetree/bindings/leds/leds-pwm.txt
+++ b/Documentation/devicetree/bindings/leds/leds-pwm.txt
@@ -13,6 +13,8 @@ LED sub-node properties:
For the pwms and pwm-names property please refer to:
Documentation/devicetree/bindings/pwm/pwm.txt
- max-brightness : Maximum brightness possible for the LED
+- active-low : (optional) For PWMs where the LED is wired to supply
+ rather than ground.
- label : (optional)
see Documentation/devicetree/bindings/leds/common.txt
- linux,default-trigger : (optional)
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 089841ca180f..a1b044e7eaad 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 8b4c956e11ba..79c5155199a7 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/dell-led.c b/drivers/leds/dell-led.c
index e5c57389efd6..c36acaf566a6 100644
--- a/drivers/leds/dell-led.c
+++ b/drivers/leds/dell-led.c
@@ -15,12 +15,15 @@
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/dell-led.h>
MODULE_AUTHOR("Louis Davis/Jim Dailey");
MODULE_DESCRIPTION("Dell LED Control Driver");
MODULE_LICENSE("GPL");
#define DELL_LED_BIOS_GUID "F6E4FE6E-909D-47cb-8BAB-C9F6F2F8D396"
+#define DELL_APP_GUID "A80593CE-A997-11DA-B012-B622A1EF5492"
MODULE_ALIAS("wmi:" DELL_LED_BIOS_GUID);
/* Error Result Codes: */
@@ -39,6 +42,149 @@ MODULE_ALIAS("wmi:" DELL_LED_BIOS_GUID);
#define CMD_LED_OFF 17
#define CMD_LED_BLINK 18
+struct app_wmi_args {
+ u16 class;
+ u16 selector;
+ u32 arg1;
+ u32 arg2;
+ u32 arg3;
+ u32 arg4;
+ u32 res1;
+ u32 res2;
+ u32 res3;
+ u32 res4;
+ char dummy[92];
+};
+
+#define GLOBAL_MIC_MUTE_ENABLE 0x364
+#define GLOBAL_MIC_MUTE_DISABLE 0x365
+
+struct dell_bios_data_token {
+ u16 tokenid;
+ u16 location;
+ u16 value;
+};
+
+struct __attribute__ ((__packed__)) dell_bios_calling_interface {
+ struct dmi_header header;
+ u16 cmd_io_addr;
+ u8 cmd_io_code;
+ u32 supported_cmds;
+ struct dell_bios_data_token damap[];
+};
+
+static struct dell_bios_data_token dell_mic_tokens[2];
+
+static int dell_wmi_perform_query(struct app_wmi_args *args)
+{
+ struct app_wmi_args *bios_return;
+ union acpi_object *obj;
+ struct acpi_buffer input;
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ acpi_status status;
+ u32 rc = -EINVAL;
+
+ input.length = 128;
+ input.pointer = args;
+
+ status = wmi_evaluate_method(DELL_APP_GUID, 0, 1, &input, &output);
+ if (!ACPI_SUCCESS(status))
+ goto err_out0;
+
+ obj = output.pointer;
+ if (!obj)
+ goto err_out0;
+
+ if (obj->type != ACPI_TYPE_BUFFER)
+ goto err_out1;
+
+ bios_return = (struct app_wmi_args *)obj->buffer.pointer;
+ rc = bios_return->res1;
+ if (rc)
+ goto err_out1;
+
+ memcpy(args, bios_return, sizeof(struct app_wmi_args));
+ rc = 0;
+
+ err_out1:
+ kfree(obj);
+ err_out0:
+ return rc;
+}
+
+static void __init find_micmute_tokens(const struct dmi_header *dm, void *dummy)
+{
+ struct dell_bios_calling_interface *calling_interface;
+ struct dell_bios_data_token *token;
+ int token_size = sizeof(struct dell_bios_data_token);
+ int i = 0;
+
+ if (dm->type == 0xda && dm->length > 17) {
+ calling_interface = container_of(dm,
+ struct dell_bios_calling_interface, header);
+
+ token = &calling_interface->damap[i];
+ while (token->tokenid != 0xffff) {
+ if (token->tokenid == GLOBAL_MIC_MUTE_DISABLE)
+ memcpy(&dell_mic_tokens[0], token, token_size);
+ else if (token->tokenid == GLOBAL_MIC_MUTE_ENABLE)
+ memcpy(&dell_mic_tokens[1], token, token_size);
+
+ i++;
+ token = &calling_interface->damap[i];
+ }
+ }
+}
+
+static int dell_micmute_led_set(int state)
+{
+ struct app_wmi_args args;
+ struct dell_bios_data_token *token;
+
+ if (!wmi_has_guid(DELL_APP_GUID))
+ return -ENODEV;
+
+ if (state == 0 || state == 1)
+ token = &dell_mic_tokens[state];
+ else
+ return -EINVAL;
+
+ memset(&args, 0, sizeof(struct app_wmi_args));
+
+ args.class = 1;
+ args.arg1 = token->location;
+ args.arg2 = token->value;
+
+ dell_wmi_perform_query(&args);
+
+ return state;
+}
+
+int dell_app_wmi_led_set(int whichled, int on)
+{
+ int state = 0;
+
+ switch (whichled) {
+ case DELL_LED_MICMUTE:
+ state = dell_micmute_led_set(on);
+ break;
+ default:
+ pr_warn("led type %x is not supported\n", whichled);
+ break;
+ }
+
+ return state;
+}
+EXPORT_SYMBOL_GPL(dell_app_wmi_led_set);
+
+static int __init dell_micmute_led_init(void)
+{
+ memset(dell_mic_tokens, 0, sizeof(struct dell_bios_data_token) * 2);
+ dmi_walk(find_micmute_tokens, NULL);
+
+ return 0;
+}
+
struct bios_args {
unsigned char length;
unsigned char result_code;
@@ -181,21 +327,32 @@ static int __init dell_led_init(void)
{
int error = 0;
- if (!wmi_has_guid(DELL_LED_BIOS_GUID))
+ if (!wmi_has_guid(DELL_LED_BIOS_GUID) && !wmi_has_guid(DELL_APP_GUID))
return -ENODEV;
- error = led_off();
- if (error != 0)
- return -ENODEV;
+ if (wmi_has_guid(DELL_APP_GUID))
+ error = dell_micmute_led_init();
- return led_classdev_register(NULL, &dell_led);
+ if (wmi_has_guid(DELL_LED_BIOS_GUID)) {
+ error = led_off();
+ if (error != 0)
+ return -ENODEV;
+
+ error = led_classdev_register(NULL, &dell_led);
+ }
+
+ return error;
}
static void __exit dell_led_exit(void)
{
- led_classdev_unregister(&dell_led);
+ int error = 0;
- led_off();
+ if (wmi_has_guid(DELL_LED_BIOS_GUID)) {
+ error = led_off();
+ if (error == 0)
+ led_classdev_unregister(&dell_led);
+ }
}
module_init(dell_led_init);
diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c
index d1e1bca90d11..c2def5551ce1 100644
--- a/drivers/leds/leds-88pm860x.c
+++ b/drivers/leds/leds-88pm860x.c
@@ -130,10 +130,9 @@ static int pm860x_led_dt_init(struct platform_device *pdev,
struct device_node *nproot, *np;
int iset = 0;
- nproot = of_node_get(pdev->dev.parent->of_node);
- if (!nproot)
+ if (!pdev->dev.parent->of_node)
return -ENODEV;
- nproot = of_find_node_by_name(nproot, "leds");
+ nproot = of_get_child_by_name(pdev->dev.parent->of_node, "leds");
if (!nproot) {
dev_err(&pdev->dev, "failed to find leds node\n");
return -ENODEV;
diff --git a/drivers/leds/leds-adp5520.c b/drivers/leds/leds-adp5520.c
index 86b5bdb0c773..5036d7b4f82e 100644
--- a/drivers/leds/leds-adp5520.c
+++ b/drivers/leds/leds-adp5520.c
@@ -120,13 +120,10 @@ static int adp5520_led_probe(struct platform_device *pdev)
led = devm_kzalloc(&pdev->dev, sizeof(*led) * pdata->num_leds,
GFP_KERNEL);
- if (led == NULL) {
- dev_err(&pdev->dev, "failed to alloc memory\n");
+ if (!led)
return -ENOMEM;
- }
ret = adp5520_led_prepare(pdev);
-
if (ret) {
dev_err(&pdev->dev, "failed to write\n");
return ret;
diff --git a/drivers/leds/leds-bd2802.c b/drivers/leds/leds-bd2802.c
index fb5a3472d614..6078c15d3452 100644
--- a/drivers/leds/leds-bd2802.c
+++ b/drivers/leds/leds-bd2802.c
@@ -678,10 +678,8 @@ static int bd2802_probe(struct i2c_client *client,
int ret, i;
led = devm_kzalloc(&client->dev, sizeof(struct bd2802_led), GFP_KERNEL);
- if (!led) {
- dev_err(&client->dev, "failed to allocate driver data\n");
+ if (!led)
return -ENOMEM;
- }
led->client = client;
pdata = led->pdata = dev_get_platdata(&client->dev);
diff --git a/drivers/leds/leds-da903x.c b/drivers/leds/leds-da903x.c
index 35dffb100388..54b8b5216b8b 100644
--- a/drivers/leds/leds-da903x.c
+++ b/drivers/leds/leds-da903x.c
@@ -108,10 +108,8 @@ static int da903x_led_probe(struct platform_device *pdev)
}
led = devm_kzalloc(&pdev->dev, sizeof(struct da903x_led), GFP_KERNEL);
- if (led == NULL) {
- dev_err(&pdev->dev, "failed to alloc memory for LED%d\n", id);
+ if (!led)
return -ENOMEM;
- }
led->cdev.name = pdata->name;
led->cdev.default_trigger = pdata->default_trigger;
diff --git a/drivers/leds/leds-da9052.c b/drivers/leds/leds-da9052.c
index 01486adc7f8b..e4da1f460ac5 100644
--- a/drivers/leds/leds-da9052.c
+++ b/drivers/leds/leds-da9052.c
@@ -126,8 +126,7 @@ static int da9052_led_probe(struct platform_device *pdev)
led = devm_kzalloc(&pdev->dev,
sizeof(struct da9052_led) * pled->num_leds,
GFP_KERNEL);
- if (led == NULL) {
- dev_err(&pdev->dev, "Failed to alloc memory\n");
+ if (!led) {
error = -ENOMEM;
goto err;
}
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index cb5ed82994ba..9e1716f8098c 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -1,5 +1,5 @@
/*
- * lp5523.c - LP5523 LED Driver
+ * lp5523.c - LP5523, LP55231 LED Driver
*
* Copyright (C) 2010 Nokia Corporation
* Copyright (C) 2012 Texas Instruments
@@ -814,6 +814,7 @@ MODULE_DEVICE_TABLE(i2c, lp5523_id);
#ifdef CONFIG_OF
static const struct of_device_id of_lp5523_leds_match[] = {
{ .compatible = "national,lp5523", },
+ { .compatible = "ti,lp55231", },
{},
};
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/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index aa770ec1e892..d672bb4480f6 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -69,6 +69,10 @@ static void led_pwm_set(struct led_classdev *led_cdev,
duty *= brightness;
do_div(duty, max);
+
+ if (led_dat->active_low)
+ duty = led_dat->period - duty;
+
led_dat->duty = duty;
if (led_dat->can_sleep)
@@ -92,55 +96,78 @@ static void led_pwm_cleanup(struct led_pwm_priv *priv)
}
}
-static int led_pwm_create_of(struct platform_device *pdev,
- struct led_pwm_priv *priv)
+static int led_pwm_add(struct device *dev, struct led_pwm_priv *priv,
+ struct led_pwm *led, struct device_node *child)
{
- struct device_node *child;
+ struct led_pwm_data *led_data = &priv->leds[priv->num_leds];
int ret;
- for_each_child_of_node(pdev->dev.of_node, child) {
- struct led_pwm_data *led_dat = &priv->leds[priv->num_leds];
+ led_data->active_low = led->active_low;
+ led_data->cdev.name = led->name;
+ led_data->cdev.default_trigger = led->default_trigger;
+ led_data->cdev.brightness_set = led_pwm_set;
+ led_data->cdev.brightness = LED_OFF;
+ led_data->cdev.max_brightness = led->max_brightness;
+ led_data->cdev.flags = LED_CORE_SUSPENDRESUME;
- led_dat->cdev.name = of_get_property(child, "label",
- NULL) ? : child->name;
+ if (child)
+ led_data->pwm = devm_of_pwm_get(dev, child, NULL);
+ else
+ led_data->pwm = devm_pwm_get(dev, led->name);
+ if (IS_ERR(led_data->pwm)) {
+ ret = PTR_ERR(led_data->pwm);
+ dev_err(dev, "unable to request PWM for %s: %d\n",
+ led->name, ret);
+ return ret;
+ }
- led_dat->pwm = devm_of_pwm_get(&pdev->dev, child, NULL);
- if (IS_ERR(led_dat->pwm)) {
- dev_err(&pdev->dev, "unable to request PWM for %s\n",
- led_dat->cdev.name);
- ret = PTR_ERR(led_dat->pwm);
- goto err;
- }
- /* Get the period from PWM core when n*/
- led_dat->period = pwm_get_period(led_dat->pwm);
+ if (child)
+ led_data->period = pwm_get_period(led_data->pwm);
- led_dat->cdev.default_trigger = of_get_property(child,
- "linux,default-trigger", NULL);
- of_property_read_u32(child, "max-brightness",
- &led_dat->cdev.max_brightness);
+ led_data->can_sleep = pwm_can_sleep(led_data->pwm);
+ if (led_data->can_sleep)
+ INIT_WORK(&led_data->work, led_pwm_work);
- led_dat->cdev.brightness_set = led_pwm_set;
- led_dat->cdev.brightness = LED_OFF;
- led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
+ led_data->period = pwm_get_period(led_data->pwm);
+ if (!led_data->period && (led->pwm_period_ns > 0))
+ led_data->period = led->pwm_period_ns;
- led_dat->can_sleep = pwm_can_sleep(led_dat->pwm);
- if (led_dat->can_sleep)
- INIT_WORK(&led_dat->work, led_pwm_work);
+ ret = led_classdev_register(dev, &led_data->cdev);
+ if (ret == 0) {
+ priv->num_leds++;
+ } else {
+ dev_err(dev, "failed to register PWM led for %s: %d\n",
+ led->name, ret);
+ }
+
+ return ret;
+}
- ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to register for %s\n",
- led_dat->cdev.name);
+static int led_pwm_create_of(struct device *dev, struct led_pwm_priv *priv)
+{
+ struct device_node *child;
+ struct led_pwm led;
+ int ret = 0;
+
+ memset(&led, 0, sizeof(led));
+
+ for_each_child_of_node(dev->of_node, child) {
+ led.name = of_get_property(child, "label", NULL) ? :
+ child->name;
+
+ led.default_trigger = of_get_property(child,
+ "linux,default-trigger", NULL);
+ led.active_low = of_property_read_bool(child, "active-low");
+ of_property_read_u32(child, "max-brightness",
+ &led.max_brightness);
+
+ ret = led_pwm_add(dev, priv, &led, child);
+ if (ret) {
of_node_put(child);
- goto err;
+ break;
}
- priv->num_leds++;
}
- return 0;
-err:
- led_pwm_cleanup(priv);
-
return ret;
}
@@ -166,54 +193,23 @@ static int led_pwm_probe(struct platform_device *pdev)
if (pdata) {
for (i = 0; i < count; i++) {
- struct led_pwm *cur_led = &pdata->leds[i];
- struct led_pwm_data *led_dat = &priv->leds[i];
-
- led_dat->pwm = devm_pwm_get(&pdev->dev, cur_led->name);
- if (IS_ERR(led_dat->pwm)) {
- ret = PTR_ERR(led_dat->pwm);
- dev_err(&pdev->dev,
- "unable to request PWM for %s\n",
- cur_led->name);
- goto err;
- }
-
- led_dat->cdev.name = cur_led->name;
- led_dat->cdev.default_trigger = cur_led->default_trigger;
- led_dat->active_low = cur_led->active_low;
- led_dat->cdev.brightness_set = led_pwm_set;
- led_dat->cdev.brightness = LED_OFF;
- led_dat->cdev.max_brightness = cur_led->max_brightness;
- led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
-
- led_dat->can_sleep = pwm_can_sleep(led_dat->pwm);
- if (led_dat->can_sleep)
- INIT_WORK(&led_dat->work, led_pwm_work);
-
- led_dat->period = pwm_get_period(led_dat->pwm);
- if (!led_dat->period && (cur_led->pwm_period_ns > 0))
- led_dat->period = cur_led->pwm_period_ns;
-
- ret = led_classdev_register(&pdev->dev, &led_dat->cdev);
- if (ret < 0)
- goto err;
+ ret = led_pwm_add(&pdev->dev, priv, &pdata->leds[i],
+ NULL);
+ if (ret)
+ break;
}
- priv->num_leds = count;
} else {
- ret = led_pwm_create_of(pdev, priv);
- if (ret)
- return ret;
+ ret = led_pwm_create_of(&pdev->dev, priv);
+ }
+
+ if (ret) {
+ led_pwm_cleanup(priv);
+ return ret;
}
platform_set_drvdata(pdev, priv);
return 0;
-
-err:
- priv->num_leds = i;
- led_pwm_cleanup(priv);
-
- return ret;
}
static int led_pwm_remove(struct platform_device *pdev)
diff --git a/drivers/leds/leds-s3c24xx.c b/drivers/leds/leds-s3c24xx.c
index 28988b7b4fab..785eb53a87fc 100644
--- a/drivers/leds/leds-s3c24xx.c
+++ b/drivers/leds/leds-s3c24xx.c
@@ -76,10 +76,8 @@ static int s3c24xx_led_probe(struct platform_device *dev)
led = devm_kzalloc(&dev->dev, sizeof(struct s3c24xx_gpio_led),
GFP_KERNEL);
- if (led == NULL) {
- dev_err(&dev->dev, "No memory for device\n");
+ if (!led)
return -ENOMEM;
- }
platform_set_drvdata(dev, led);
diff --git a/drivers/leds/leds-sunfire.c b/drivers/leds/leds-sunfire.c
index 388632d23d44..0b8cc4a021a6 100644
--- a/drivers/leds/leds-sunfire.c
+++ b/drivers/leds/leds-sunfire.c
@@ -135,10 +135,8 @@ static int sunfire_led_generic_probe(struct platform_device *pdev,
}
p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
- if (!p) {
- dev_err(&pdev->dev, "Could not allocate struct sunfire_drvdata\n");
+ if (!p)
return -ENOMEM;
- }
for (i = 0; i < NUM_LEDS_PER_BOARD; i++) {
struct led_classdev *lp = &p->leds[i].led_cdev;
diff --git a/drivers/leds/trigger/ledtrig-cpu.c b/drivers/leds/trigger/ledtrig-cpu.c
index 1c3ee9fcaf34..aec0f02b6b3e 100644
--- a/drivers/leds/trigger/ledtrig-cpu.c
+++ b/drivers/leds/trigger/ledtrig-cpu.c
@@ -47,7 +47,7 @@ static DEFINE_PER_CPU(struct led_trigger_cpu, cpu_trig);
*/
void ledtrig_cpu(enum cpu_led_event ledevt)
{
- struct led_trigger_cpu *trig = &__get_cpu_var(cpu_trig);
+ struct led_trigger_cpu *trig = this_cpu_ptr(&cpu_trig);
/* Locate the correct CPU LED */
switch (ledevt) {
diff --git a/include/linux/dell-led.h b/include/linux/dell-led.h
new file mode 100644
index 000000000000..7009b8bec77b
--- /dev/null
+++ b/include/linux/dell-led.h
@@ -0,0 +1,10 @@
+#ifndef __DELL_LED_H__
+#define __DELL_LED_H__
+
+enum {
+ DELL_LED_MICMUTE,
+};
+
+int dell_app_wmi_led_set(int whichled, int on);
+
+#endif
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 */

Privacy Policy