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-rw-r--r--drivers/leds/Kconfig10
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/leds-88pm860x.c60
-rw-r--r--drivers/leds/leds-bd2802.c47
-rw-r--r--drivers/leds/leds-gpio.c214
-rw-r--r--drivers/leds/leds-lm3530.c378
-rw-r--r--drivers/leds/leds-lp5521.c14
-rw-r--r--drivers/leds/leds-lp5523.c20
-rw-r--r--drivers/leds/leds-mc13783.c7
-rw-r--r--drivers/leds/leds-net5501.c2
-rw-r--r--drivers/leds/leds-pwm.c1
11 files changed, 555 insertions, 199 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index 6f190f4..9bec869 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -34,6 +34,16 @@ config LEDS_ATMEL_PWM
This option enables support for LEDs driven using outputs
of the dedicated PWM controller found on newer Atmel SOCs.
+config LEDS_LM3530
+ tristate "LCD Backlight driver for LM3530"
+ depends on LEDS_CLASS
+ depends on I2C
+ help
+ This option enables support for the LCD backlight using
+ LM3530 ambient light sensor chip. This ALS chip can be
+ controlled manually or using PWM input or using ambient
+ light automatically.
+
config LEDS_LOCOMO
tristate "LED Support for Locomo device"
depends on LEDS_CLASS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index aae6989..39c80fc 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_LEDS_88PM860X) += leds-88pm860x.o
obj-$(CONFIG_LEDS_ATMEL_PWM) += leds-atmel-pwm.o
obj-$(CONFIG_LEDS_BD2802) += leds-bd2802.o
obj-$(CONFIG_LEDS_LOCOMO) += leds-locomo.o
+obj-$(CONFIG_LEDS_LM3530) += leds-lm3530.o
obj-$(CONFIG_LEDS_MIKROTIK_RB532) += leds-rb532.o
obj-$(CONFIG_LEDS_S3C24XX) += leds-s3c24xx.o
obj-$(CONFIG_LEDS_AMS_DELTA) += leds-ams-delta.o
diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c
index e672b44..416def8 100644
--- a/drivers/leds/leds-88pm860x.c
+++ b/drivers/leds/leds-88pm860x.c
@@ -17,6 +17,7 @@
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
+#include <linux/mfd/core.h>
#include <linux/mfd/88pm860x.h>
#define LED_PWM_SHIFT (3)
@@ -118,7 +119,8 @@ static void pm860x_led_work(struct work_struct *work)
struct pm860x_led *led;
struct pm860x_chip *chip;
- int mask;
+ unsigned char buf[3];
+ int mask, ret;
led = container_of(work, struct pm860x_led, work);
chip = led->chip;
@@ -128,16 +130,27 @@ static void pm860x_led_work(struct work_struct *work)
pm860x_set_bits(led->i2c, __led_off(led->port),
LED_CURRENT_MASK, led->iset);
}
+ pm860x_set_bits(led->i2c, __blink_off(led->port),
+ LED_BLINK_MASK, LED_ON_CONTINUOUS);
mask = __blink_ctl_mask(led->port);
pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, mask);
- } else if (led->brightness == 0) {
- pm860x_set_bits(led->i2c, __led_off(led->port),
- LED_CURRENT_MASK, 0);
- mask = __blink_ctl_mask(led->port);
- pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, 0);
}
pm860x_set_bits(led->i2c, __led_off(led->port), LED_PWM_MASK,
led->brightness);
+
+ if (led->brightness == 0) {
+ pm860x_bulk_read(led->i2c, __led_off(led->port), 3, buf);
+ ret = buf[0] & LED_PWM_MASK;
+ ret |= buf[1] & LED_PWM_MASK;
+ ret |= buf[2] & LED_PWM_MASK;
+ if (ret == 0) {
+ /* unset current since no led is lighting */
+ pm860x_set_bits(led->i2c, __led_off(led->port),
+ LED_CURRENT_MASK, 0);
+ mask = __blink_ctl_mask(led->port);
+ pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, 0);
+ }
+ }
led->current_brightness = led->brightness;
dev_dbg(chip->dev, "Update LED. (reg:%d, brightness:%d)\n",
__led_off(led->port), led->brightness);
@@ -153,31 +166,12 @@ static void pm860x_led_set(struct led_classdev *cdev,
schedule_work(&data->work);
}
-static int __check_device(struct pm860x_led_pdata *pdata, char *name)
-{
- struct pm860x_led_pdata *p = pdata;
- int ret = -EINVAL;
-
- while (p && p->id) {
- if ((p->id != PM8606_ID_LED) || (p->flags < 0))
- break;
-
- if (!strncmp(name, pm860x_led_name[p->flags],
- MFD_NAME_SIZE)) {
- ret = (int)p->flags;
- break;
- }
- p++;
- }
- return ret;
-}
-
static int pm860x_led_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
- struct pm860x_platform_data *pm860x_pdata;
struct pm860x_led_pdata *pdata;
struct pm860x_led *data;
+ struct mfd_cell *cell;
struct resource *res;
int ret;
@@ -187,10 +181,11 @@ static int pm860x_led_probe(struct platform_device *pdev)
return -EINVAL;
}
- if (pdev->dev.parent->platform_data) {
- pm860x_pdata = pdev->dev.parent->platform_data;
- pdata = pm860x_pdata->led;
- } else {
+ cell = pdev->dev.platform_data;
+ if (cell == NULL)
+ return -ENODEV;
+ pdata = cell->mfd_data;
+ if (pdata == NULL) {
dev_err(&pdev->dev, "No platform data!\n");
return -EINVAL;
}
@@ -198,12 +193,12 @@ static int pm860x_led_probe(struct platform_device *pdev)
data = kzalloc(sizeof(struct pm860x_led), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
- strncpy(data->name, res->name, MFD_NAME_SIZE);
+ strncpy(data->name, res->name, MFD_NAME_SIZE - 1);
dev_set_drvdata(&pdev->dev, data);
data->chip = chip;
data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion;
data->iset = pdata->iset;
- data->port = __check_device(pdata, data->name);
+ data->port = pdata->flags;
if (data->port < 0) {
dev_err(&pdev->dev, "check device failed\n");
kfree(data);
@@ -221,6 +216,7 @@ static int pm860x_led_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "Failed to register LED: %d\n", ret);
goto out;
}
+ pm860x_led_set(&data->cdev, 0);
return 0;
out:
kfree(data);
diff --git a/drivers/leds/leds-bd2802.c b/drivers/leds/leds-bd2802.c
index 19dc4b6..3ebe382 100644
--- a/drivers/leds/leds-bd2802.c
+++ b/drivers/leds/leds-bd2802.c
@@ -19,7 +19,7 @@
#include <linux/leds.h>
#include <linux/leds-bd2802.h>
#include <linux/slab.h>
-
+#include <linux/pm.h>
#define LED_CTL(rgb2en, rgb1en) ((rgb2en) << 4 | ((rgb1en) << 0))
@@ -319,20 +319,6 @@ static void bd2802_turn_off(struct bd2802_led *led, enum led_ids id,
bd2802_update_state(led, id, color, BD2802_OFF);
}
-static void bd2802_restore_state(struct bd2802_led *led)
-{
- int i;
-
- for (i = 0; i < LED_NUM; i++) {
- if (led->led[i].r)
- bd2802_turn_on(led, i, RED, led->led[i].r);
- if (led->led[i].g)
- bd2802_turn_on(led, i, GREEN, led->led[i].g);
- if (led->led[i].b)
- bd2802_turn_on(led, i, BLUE, led->led[i].b);
- }
-}
-
#define BD2802_SET_REGISTER(reg_addr, reg_name) \
static ssize_t bd2802_store_reg##reg_addr(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
@@ -761,8 +747,25 @@ static int __exit bd2802_remove(struct i2c_client *client)
return 0;
}
-static int bd2802_suspend(struct i2c_client *client, pm_message_t mesg)
+#ifdef CONFIG_PM
+
+static void bd2802_restore_state(struct bd2802_led *led)
{
+ int i;
+
+ for (i = 0; i < LED_NUM; i++) {
+ if (led->led[i].r)
+ bd2802_turn_on(led, i, RED, led->led[i].r);
+ if (led->led[i].g)
+ bd2802_turn_on(led, i, GREEN, led->led[i].g);
+ if (led->led[i].b)
+ bd2802_turn_on(led, i, BLUE, led->led[i].b);
+ }
+}
+
+static int bd2802_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
struct bd2802_led *led = i2c_get_clientdata(client);
gpio_set_value(led->pdata->reset_gpio, 0);
@@ -770,8 +773,9 @@ static int bd2802_suspend(struct i2c_client *client, pm_message_t mesg)
return 0;
}
-static int bd2802_resume(struct i2c_client *client)
+static int bd2802_resume(struct device *dev)
{
+ struct i2c_client *client = to_i2c_client(dev);
struct bd2802_led *led = i2c_get_clientdata(client);
if (!bd2802_is_all_off(led) || led->adf_on) {
@@ -782,6 +786,12 @@ static int bd2802_resume(struct i2c_client *client)
return 0;
}
+static SIMPLE_DEV_PM_OPS(bd2802_pm, bd2802_suspend, bd2802_resume);
+#define BD2802_PM (&bd2802_pm)
+#else /* CONFIG_PM */
+#define BD2802_PM NULL
+#endif
+
static const struct i2c_device_id bd2802_id[] = {
{ "BD2802", 0 },
{ }
@@ -791,11 +801,10 @@ MODULE_DEVICE_TABLE(i2c, bd2802_id);
static struct i2c_driver bd2802_i2c_driver = {
.driver = {
.name = "BD2802",
+ .pm = BD2802_PM,
},
.probe = bd2802_probe,
.remove = __exit_p(bd2802_remove),
- .suspend = bd2802_suspend,
- .resume = bd2802_resume,
.id_table = bd2802_id,
};
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 4d9fa38..b0480c8 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -14,6 +14,8 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
@@ -151,96 +153,34 @@ static void delete_gpio_led(struct gpio_led_data *led)
gpio_free(led->gpio);
}
-#ifdef CONFIG_LEDS_GPIO_PLATFORM
-static int __devinit gpio_led_probe(struct platform_device *pdev)
-{
- struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
- struct gpio_led_data *leds_data;
- int i, ret = 0;
-
- if (!pdata)
- return -EBUSY;
-
- leds_data = kzalloc(sizeof(struct gpio_led_data) * pdata->num_leds,
- GFP_KERNEL);
- if (!leds_data)
- return -ENOMEM;
-
- for (i = 0; i < pdata->num_leds; i++) {
- ret = create_gpio_led(&pdata->leds[i], &leds_data[i],
- &pdev->dev, pdata->gpio_blink_set);
- if (ret < 0)
- goto err;
- }
-
- platform_set_drvdata(pdev, leds_data);
-
- return 0;
-
-err:
- for (i = i - 1; i >= 0; i--)
- delete_gpio_led(&leds_data[i]);
-
- kfree(leds_data);
-
- return ret;
-}
+struct gpio_leds_priv {
+ int num_leds;
+ struct gpio_led_data leds[];
+};
-static int __devexit gpio_led_remove(struct platform_device *pdev)
+static inline int sizeof_gpio_leds_priv(int num_leds)
{
- int i;
- struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
- struct gpio_led_data *leds_data;
-
- leds_data = platform_get_drvdata(pdev);
-
- for (i = 0; i < pdata->num_leds; i++)
- delete_gpio_led(&leds_data[i]);
-
- kfree(leds_data);
-
- return 0;
+ return sizeof(struct gpio_leds_priv) +
+ (sizeof(struct gpio_led_data) * num_leds);
}
-static struct platform_driver gpio_led_driver = {
- .probe = gpio_led_probe,
- .remove = __devexit_p(gpio_led_remove),
- .driver = {
- .name = "leds-gpio",
- .owner = THIS_MODULE,
- },
-};
-
-MODULE_ALIAS("platform:leds-gpio");
-#endif /* CONFIG_LEDS_GPIO_PLATFORM */
-
/* Code to create from OpenFirmware platform devices */
#ifdef CONFIG_LEDS_GPIO_OF
-#include <linux/of_platform.h>
-#include <linux/of_gpio.h>
-
-struct gpio_led_of_platform_data {
- int num_leds;
- struct gpio_led_data led_data[];
-};
-
-static int __devinit of_gpio_leds_probe(struct platform_device *ofdev,
- const struct of_device_id *match)
+static struct gpio_leds_priv * __devinit gpio_leds_create_of(struct platform_device *pdev)
{
- struct device_node *np = ofdev->dev.of_node, *child;
- struct gpio_led_of_platform_data *pdata;
+ struct device_node *np = pdev->dev.of_node, *child;
+ struct gpio_leds_priv *priv;
int count = 0, ret;
- /* count LEDs defined by this device, so we know how much to allocate */
+ /* count LEDs in this device, so we know how much to allocate */
for_each_child_of_node(np, child)
count++;
if (!count)
- return 0; /* or ENODEV? */
+ return NULL;
- pdata = kzalloc(sizeof(*pdata) + sizeof(struct gpio_led_data) * count,
- GFP_KERNEL);
- if (!pdata)
- return -ENOMEM;
+ priv = kzalloc(sizeof_gpio_leds_priv(count), GFP_KERNEL);
+ if (!priv)
+ return NULL;
for_each_child_of_node(np, child) {
struct gpio_led led = {};
@@ -256,92 +196,112 @@ static int __devinit of_gpio_leds_probe(struct platform_device *ofdev,
if (state) {
if (!strcmp(state, "keep"))
led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
- else if(!strcmp(state, "on"))
+ else if (!strcmp(state, "on"))
led.default_state = LEDS_GPIO_DEFSTATE_ON;
else
led.default_state = LEDS_GPIO_DEFSTATE_OFF;
}
- ret = create_gpio_led(&led, &pdata->led_data[pdata->num_leds++],
- &ofdev->dev, NULL);
+ ret = create_gpio_led(&led, &priv->leds[priv->num_leds++],
+ &pdev->dev, NULL);
if (ret < 0) {
of_node_put(child);
goto err;
}
}
- dev_set_drvdata(&ofdev->dev, pdata);
-
- return 0;
+ return priv;
err:
- for (count = pdata->num_leds - 2; count >= 0; count--)
- delete_gpio_led(&pdata->led_data[count]);
+ for (count = priv->num_leds - 2; count >= 0; count--)
+ delete_gpio_led(&priv->leds[count]);
+ kfree(priv);
+ return NULL;
+}
- kfree(pdata);
+static const struct of_device_id of_gpio_leds_match[] = {
+ { .compatible = "gpio-leds", },
+ {},
+};
+#else
+static struct gpio_leds_priv * __devinit gpio_leds_create_of(struct platform_device *pdev)
+{
+ return NULL;
+}
+#define of_gpio_leds_match NULL
+#endif
- return ret;
+
+static int __devinit gpio_led_probe(struct platform_device *pdev)
+{
+ struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
+ struct gpio_leds_priv *priv;
+ int i, ret = 0;
+
+ if (pdata && pdata->num_leds) {
+ priv = kzalloc(sizeof_gpio_leds_priv(pdata->num_leds),
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->num_leds = pdata->num_leds;
+ for (i = 0; i < priv->num_leds; i++) {
+ ret = create_gpio_led(&pdata->leds[i],
+ &priv->leds[i],
+ &pdev->dev, pdata->gpio_blink_set);
+ if (ret < 0) {
+ /* On failure: unwind the led creations */
+ for (i = i - 1; i >= 0; i--)
+ delete_gpio_led(&priv->leds[i]);
+ kfree(priv);
+ return ret;
+ }
+ }
+ } else {
+ priv = gpio_leds_create_of(pdev);
+ if (!priv)
+ return -ENODEV;
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ return 0;
}
-static int __devexit of_gpio_leds_remove(struct platform_device *ofdev)
+static int __devexit gpio_led_remove(struct platform_device *pdev)
{
- struct gpio_led_of_platform_data *pdata = dev_get_drvdata(&ofdev->dev);
+ struct gpio_leds_priv *priv = dev_get_drvdata(&pdev->dev);
int i;
- for (i = 0; i < pdata->num_leds; i++)
- delete_gpio_led(&pdata->led_data[i]);
-
- kfree(pdata);
+ for (i = 0; i < priv->num_leds; i++)
+ delete_gpio_led(&priv->leds[i]);
- dev_set_drvdata(&ofdev->dev, NULL);
+ dev_set_drvdata(&pdev->dev, NULL);
+ kfree(priv);
return 0;
}
-static const struct of_device_id of_gpio_leds_match[] = {
- { .compatible = "gpio-leds", },
- {},
-};
-
-static struct of_platform_driver of_gpio_leds_driver = {
- .driver = {
- .name = "of_gpio_leds",
- .owner = THIS_MODULE,
+static struct platform_driver gpio_led_driver = {
+ .probe = gpio_led_probe,
+ .remove = __devexit_p(gpio_led_remove),
+ .driver = {
+ .name = "leds-gpio",
+ .owner = THIS_MODULE,
.of_match_table = of_gpio_leds_match,
},
- .probe = of_gpio_leds_probe,
- .remove = __devexit_p(of_gpio_leds_remove),
};
-#endif
+
+MODULE_ALIAS("platform:leds-gpio");
static int __init gpio_led_init(void)
{
- int ret = 0;
-
-#ifdef CONFIG_LEDS_GPIO_PLATFORM
- ret = platform_driver_register(&gpio_led_driver);
- if (ret)
- return ret;
-#endif
-#ifdef CONFIG_LEDS_GPIO_OF
- ret = of_register_platform_driver(&of_gpio_leds_driver);
-#endif
-#ifdef CONFIG_LEDS_GPIO_PLATFORM
- if (ret)
- platform_driver_unregister(&gpio_led_driver);
-#endif
-
- return ret;
+ return platform_driver_register(&gpio_led_driver);
}
static void __exit gpio_led_exit(void)
{
-#ifdef CONFIG_LEDS_GPIO_PLATFORM
platform_driver_unregister(&gpio_led_driver);
-#endif
-#ifdef CONFIG_LEDS_GPIO_OF
- of_unregister_platform_driver(&of_gpio_leds_driver);
-#endif
}
module_init(gpio_led_init);
diff --git a/drivers/leds/leds-lm3530.c b/drivers/leds/leds-lm3530.c
new file mode 100644
index 0000000..e7089a1
--- /dev/null
+++ b/drivers/leds/leds-lm3530.c
@@ -0,0 +1,378 @@
+/*
+ * Copyright (C) 2011 ST-Ericsson SA.
+ * Copyright (C) 2009 Motorola, Inc.
+ *
+ * License Terms: GNU General Public License v2
+ *
+ * Simple driver for National Semiconductor LM3530 Backlight driver chip
+ *
+ * Author: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
+ * based on leds-lm3530.c by Dan Murphy <D.Murphy@motorola.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/leds.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/input.h>
+#include <linux/led-lm3530.h>
+#include <linux/types.h>
+
+#define LM3530_LED_DEV "lcd-backlight"
+#define LM3530_NAME "lm3530-led"
+
+#define LM3530_GEN_CONFIG 0x10
+#define LM3530_ALS_CONFIG 0x20
+#define LM3530_BRT_RAMP_RATE 0x30
+#define LM3530_ALS_ZONE_REG 0x40
+#define LM3530_ALS_IMP_SELECT 0x41
+#define LM3530_BRT_CTRL_REG 0xA0
+#define LM3530_ALS_ZB0_REG 0x60
+#define LM3530_ALS_ZB1_REG 0x61
+#define LM3530_ALS_ZB2_REG 0x62
+#define LM3530_ALS_ZB3_REG 0x63
+#define LM3530_ALS_Z0T_REG 0x70
+#define LM3530_ALS_Z1T_REG 0x71
+#define LM3530_ALS_Z2T_REG 0x72
+#define LM3530_ALS_Z3T_REG 0x73
+#define LM3530_ALS_Z4T_REG 0x74
+#define LM3530_REG_MAX 15
+
+/* General Control Register */
+#define LM3530_EN_I2C_SHIFT (0)
+#define LM3530_RAMP_LAW_SHIFT (1)
+#define LM3530_MAX_CURR_SHIFT (2)
+#define LM3530_EN_PWM_SHIFT (5)
+#define LM3530_PWM_POL_SHIFT (6)
+#define LM3530_EN_PWM_SIMPLE_SHIFT (7)
+
+#define LM3530_ENABLE_I2C (1 << LM3530_EN_I2C_SHIFT)
+#define LM3530_ENABLE_PWM (1 << LM3530_EN_PWM_SHIFT)
+#define LM3530_POL_LOW (1 << LM3530_PWM_POL_SHIFT)
+#define LM3530_ENABLE_PWM_SIMPLE (1 << LM3530_EN_PWM_SIMPLE_SHIFT)
+
+/* ALS Config Register Options */
+#define LM3530_ALS_AVG_TIME_SHIFT (0)
+#define LM3530_EN_ALS_SHIFT (3)
+#define LM3530_ALS_SEL_SHIFT (5)
+
+#define LM3530_ENABLE_ALS (3 << LM3530_EN_ALS_SHIFT)
+
+/* Brightness Ramp Rate Register */
+#define LM3530_BRT_RAMP_FALL_SHIFT (0)
+#define LM3530_BRT_RAMP_RISE_SHIFT (3)
+
+/* ALS Resistor Select */
+#define LM3530_ALS1_IMP_SHIFT (0)
+#define LM3530_ALS2_IMP_SHIFT (4)
+
+/* Zone Boundary Register defaults */
+#define LM3530_DEF_ZB_0 (0x33)
+#define LM3530_DEF_ZB_1 (0x66)
+#define LM3530_DEF_ZB_2 (0x99)
+#define LM3530_DEF_ZB_3 (0xCC)
+
+/* Zone Target Register defaults */
+#define LM3530_DEF_ZT_0 (0x19)
+#define LM3530_DEF_ZT_1 (0x33)
+#define LM3530_DEF_ZT_2 (0x4C)
+#define LM3530_DEF_ZT_3 (0x66)
+#define LM3530_DEF_ZT_4 (0x7F)
+
+struct lm3530_mode_map {
+ const char *mode;
+ enum lm3530_mode mode_val;
+};
+
+static struct lm3530_mode_map mode_map[] = {
+ { "man", LM3530_BL_MODE_MANUAL },
+ { "als", LM3530_BL_MODE_ALS },
+ { "pwm", LM3530_BL_MODE_PWM },
+};
+
+/**
+ * struct lm3530_data
+ * @led_dev: led class device
+ * @client: i2c client
+ * @pdata: LM3530 platform data
+ * @mode: mode of operation - manual, ALS, PWM
+ */
+struct lm3530_data {
+ struct led_classdev led_dev;
+ struct i2c_client *client;
+ struct lm3530_platform_data *pdata;
+ enum lm3530_mode mode;
+};
+
+static const u8 lm3530_reg[LM3530_REG_MAX] = {
+ LM3530_GEN_CONFIG,
+ LM3530_ALS_CONFIG,
+ LM3530_BRT_RAMP_RATE,
+ LM3530_ALS_ZONE_REG,
+ LM3530_ALS_IMP_SELECT,
+ LM3530_BRT_CTRL_REG,
+ LM3530_ALS_ZB0_REG,
+ LM3530_ALS_ZB1_REG,
+ LM3530_ALS_ZB2_REG,
+ LM3530_ALS_ZB3_REG,
+ LM3530_ALS_Z0T_REG,
+ LM3530_ALS_Z1T_REG,
+ LM3530_ALS_Z2T_REG,
+ LM3530_ALS_Z3T_REG,
+ LM3530_ALS_Z4T_REG,
+};
+
+static int lm3530_get_mode_from_str(const char *str)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mode_map); i++)
+ if (sysfs_streq(str, mode_map[i].mode))
+ return mode_map[i].mode_val;
+
+ return -1;
+}
+
+static int lm3530_init_registers(struct lm3530_data *drvdata)
+{
+ int ret = 0;
+ int i;
+ u8 gen_config;
+ u8 als_config = 0;
+ u8 brt_ramp;
+ u8 als_imp_sel = 0;
+ u8 brightness;
+ u8 reg_val[LM3530_REG_MAX];
+ struct lm3530_platform_data *pltfm = drvdata->pdata;
+ struct i2c_client *client = drvdata->client;
+
+ gen_config = (pltfm->brt_ramp_law << LM3530_RAMP_LAW_SHIFT) |
+ ((pltfm->max_current & 7) << LM3530_MAX_CURR_SHIFT);
+
+ if (drvdata->mode == LM3530_BL_MODE_MANUAL ||
+ drvdata->mode == LM3530_BL_MODE_ALS)
+ gen_config |= (LM3530_ENABLE_I2C);
+
+ if (drvdata->mode == LM3530_BL_MODE_ALS) {
+ als_config =
+ (pltfm->als_avrg_time << LM3530_ALS_AVG_TIME_SHIFT) |
+ (LM3530_ENABLE_ALS) |
+ (pltfm->als_input_mode << LM3530_ALS_SEL_SHIFT);
+
+ als_imp_sel =
+ (pltfm->als1_resistor_sel << LM3530_ALS1_IMP_SHIFT) |
+ (pltfm->als2_resistor_sel << LM3530_ALS2_IMP_SHIFT);
+ }
+
+ if (drvdata->mode == LM3530_BL_MODE_PWM)
+ gen_config |= (LM3530_ENABLE_PWM) |
+ (pltfm->pwm_pol_hi << LM3530_PWM_POL_SHIFT) |
+ (LM3530_ENABLE_PWM_SIMPLE);
+
+ brt_ramp = (pltfm->brt_ramp_fall << LM3530_BRT_RAMP_FALL_SHIFT) |
+ (pltfm->brt_ramp_rise << LM3530_BRT_RAMP_RISE_SHIFT);
+
+ brightness = pltfm->brt_val;
+
+ reg_val[0] = gen_config; /* LM3530_GEN_CONFIG */
+ reg_val[1] = als_config; /* LM3530_ALS_CONFIG */
+ reg_val[2] = brt_ramp; /* LM3530_BRT_RAMP_RATE */
+ reg_val[3] = 0x00; /* LM3530_ALS_ZONE_REG */
+ reg_val[4] = als_imp_sel; /* LM3530_ALS_IMP_SELECT */
+ reg_val[5] = brightness; /* LM3530_BRT_CTRL_REG */
+ reg_val[6] = LM3530_DEF_ZB_0; /* LM3530_ALS_ZB0_REG */
+ reg_val[7] = LM3530_DEF_ZB_1; /* LM3530_ALS_ZB1_REG */
+ reg_val[8] = LM3530_DEF_ZB_2; /* LM3530_ALS_ZB2_REG */
+ reg_val[9] = LM3530_DEF_ZB_3; /* LM3530_ALS_ZB3_REG */
+ reg_val[10] = LM3530_DEF_ZT_0; /* LM3530_ALS_Z0T_REG */
+ reg_val[11] = LM3530_DEF_ZT_1; /* LM3530_ALS_Z1T_REG */
+ reg_val[12] = LM3530_DEF_ZT_2; /* LM3530_ALS_Z2T_REG */
+ reg_val[13] = LM3530_DEF_ZT_3; /* LM3530_ALS_Z3T_REG */
+ reg_val[14] = LM3530_DEF_ZT_4; /* LM3530_ALS_Z4T_REG */
+
+ for (i = 0; i < LM3530_REG_MAX; i++) {
+ ret = i2c_smbus_write_byte_data(client,
+ lm3530_reg[i], reg_val[i]);
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+static void lm3530_brightness_set(struct led_classdev *led_cdev,
+ enum led_brightness brt_val)
+{
+ int err;
+ struct lm3530_data *drvdata =
+ container_of(led_cdev, struct lm3530_data, led_dev);
+
+ switch (drvdata->mode) {
+ case LM3530_BL_MODE_MANUAL:
+
+ /* set the brightness in brightness control register*/
+ err = i2c_smbus_write_byte_data(drvdata->client,
+ LM3530_BRT_CTRL_REG, brt_val / 2);
+ if (err)
+ dev_err(&drvdata->client->dev,
+ "Unable to set brightness: %d\n", err);
+ break;
+ case LM3530_BL_MODE_ALS:
+ break;
+ case LM3530_BL_MODE_PWM:
+ break;
+ default:
+ break;
+ }
+}
+
+
+static ssize_t lm3530_mode_set(struct device *dev, struct device_attribute
+ *attr, const char *buf, size_t size)
+{
+ int err;
+ struct i2c_client *client = container_of(
+ dev->parent, struct i2c_client, dev);
+ struct lm3530_data *drvdata = i2c_get_clientdata(client);
+ int mode;
+
+ mode = lm3530_get_mode_from_str(buf);
+ if (mode < 0) {
+ dev_err(dev, "Invalid mode\n");
+ return -EINVAL;
+ }
+
+ if (mode == LM3530_BL_MODE_MANUAL)
+ drvdata->mode = LM3530_BL_MODE_MANUAL;
+ else if (mode == LM3530_BL_MODE_ALS)
+ drvdata->mode = LM3530_BL_MODE_ALS;
+ else if (mode == LM3530_BL_MODE_PWM) {
+ dev_err(dev, "PWM mode not supported\n");
+ return -EINVAL;
+ }
+
+ err = lm3530_init_registers(drvdata);
+ if (err) {
+ dev_err(dev, "Setting %s Mode failed :%d\n", buf, err);
+ return err;
+ }
+
+ return sizeof(drvdata->mode);
+}
+
+static DEVICE_ATTR(mode, 0644, NULL, lm3530_mode_set);
+
+static int __devinit lm3530_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct lm3530_platform_data *pdata = client->dev.platform_data;
+ struct lm3530_data *drvdata;
+ int err = 0;
+
+ if (pdata == NULL) {
+ dev_err(&client->dev, "platform data required\n");
+ err = -ENODEV;
+ goto err_out;
+ }
+
+ /* BL mode */
+ if (pdata->mode > LM3530_BL_MODE_PWM) {
+ dev_err(&client->dev, "Illegal Mode request\n");
+ err = -EINVAL;
+ goto err_out;
+ }
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+ dev_err(&client->dev, "I2C_FUNC_I2C not supported\n");
+ err = -EIO;
+ goto err_out;
+ }
+
+ drvdata = kzalloc(sizeof(struct lm3530_data), GFP_KERNEL);
+ if (drvdata == NULL) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
+ drvdata->mode = pdata->mode;
+ drvdata->client = client;
+ drvdata->pdata = pdata;
+ drvdata->led_dev.name = LM3530_LED_DEV;
+ drvdata->led_dev.brightness_set = lm3530_brightness_set;
+
+ i2c_set_clientdata(client, drvdata);
+
+ err = lm3530_init_registers(drvdata);
+ if (err < 0) {
+ dev_err(&client->dev, "Register Init failed: %d\n", err);
+ err = -ENODEV;
+ goto err_reg_init;
+ }
+
+ err = led_classdev_register((struct device *)
+ &client->dev, &drvdata->led_dev);
+ if (err < 0) {
+ dev_err(&client->dev, "Register led class failed: %d\n", err);
+ err = -ENODEV;
+ goto err_class_register;
+ }
+
+ err = device_create_file(drvdata->led_dev.dev, &dev_attr_mode);
+ if (err < 0) {
+ dev_err(&client->dev, "File device creation failed: %d\n", err);
+ err = -ENODEV;
+ goto err_create_file;
+ }
+
+ return 0;
+
+err_create_file:
+ led_classdev_unregister(&drvdata->led_dev);
+err_class_register:
+err_reg_init:
+ kfree(drvdata);
+err_out:
+ return err;
+}
+
+static int __devexit lm3530_remove(struct i2c_client *client)
+{
+ struct lm3530_data *drvdata = i2c_get_clientdata(client);
+
+ device_remove_file(drvdata->led_dev.dev, &dev_attr_mode);
+ led_classdev_unregister(&drvdata->led_dev);
+ kfree(drvdata);
+ return 0;
+}
+
+static const struct i2c_device_id lm3530_id[] = {
+ {LM3530_NAME, 0},
+ {}
+};
+
+static struct i2c_driver lm3530_i2c_driver = {
+ .probe = lm3530_probe,
+ .remove = lm3530_remove,
+ .id_table = lm3530_id,
+ .driver = {
+ .name = LM3530_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init lm3530_init(void)
+{
+ return i2c_add_driver(&lm3530_i2c_driver);
+}
+
+static void __exit lm3530_exit(void)
+{
+ i2c_del_driver(&lm3530_i2c_driver);
+}
+
+module_init(lm3530_init);
+module_exit(lm3530_exit);
+
+MODULE_DESCRIPTION("Back Light driver for LM3530");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>");
diff --git a/drivers/leds/leds-lp5521.c b/drivers/leds/leds-lp5521.c
index 80a3ae3..c0cff64 100644
--- a/drivers/leds/leds-lp5521.c
+++ b/drivers/leds/leds-lp5521.c
@@ -534,7 +534,7 @@ static ssize_t lp5521_selftest(struct device *dev,
}
/* led class device attributes */
-static DEVICE_ATTR(led_current, S_IRUGO | S_IWUGO, show_current, store_current);
+static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, show_current, store_current);
static DEVICE_ATTR(max_current, S_IRUGO , show_max_current, NULL);
static struct attribute *lp5521_led_attributes[] = {
@@ -548,15 +548,15 @@ static struct attribute_group lp5521_led_attribute_group = {
};
/* device attributes */
-static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUSR,
show_engine1_mode, store_engine1_mode);
-static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUSR,
show_engine2_mode, store_engine2_mode);
-static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUSR,
show_engine3_mode, store_engine3_mode);
-static DEVICE_ATTR(engine1_load, S_IWUGO, NULL, store_engine1_load);
-static DEVICE_ATTR(engine2_load, S_IWUGO, NULL, store_engine2_load);
-static DEVICE_ATTR(engine3_load, S_IWUGO, NULL, store_engine3_load);
+static DEVICE_ATTR(engine1_load, S_IWUSR, NULL, store_engine1_load);
+static DEVICE_ATTR(engine2_load, S_IWUSR, NULL, store_engine2_load);
+static DEVICE_ATTR(engine3_load, S_IWUSR, NULL, store_engine3_load);
static DEVICE_ATTR(selftest, S_IRUGO, lp5521_selftest, NULL);
static struct attribute *lp5521_attributes[] = {
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c
index d0c4068..e19fed2 100644
--- a/drivers/leds/leds-lp5523.c
+++ b/drivers/leds/leds-lp5523.c
@@ -713,7 +713,7 @@ static ssize_t store_current(struct device *dev,
}
/* led class device attributes */
-static DEVICE_ATTR(led_current, S_IRUGO | S_IWUGO, show_current, store_current);
+static DEVICE_ATTR(led_current, S_IRUGO | S_IWUSR, show_current, store_current);
static DEVICE_ATTR(max_current, S_IRUGO , show_max_current, NULL);
static struct attribute *lp5523_led_attributes[] = {
@@ -727,21 +727,21 @@ static struct attribute_group lp5523_led_attribute_group = {
};
/* device attributes */
-static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine1_mode, S_IRUGO | S_IWUSR,
show_engine1_mode, store_engine1_mode);
-static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine2_mode, S_IRUGO | S_IWUSR,
show_engine2_mode, store_engine2_mode);
-static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine3_mode, S_IRUGO | S_IWUSR,
show_engine3_mode, store_engine3_mode);
-static DEVICE_ATTR(engine1_leds, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine1_leds, S_IRUGO | S_IWUSR,
show_engine1_leds, store_engine1_leds);
-static DEVICE_ATTR(engine2_leds, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine2_leds, S_IRUGO | S_IWUSR,
show_engine2_leds, store_engine2_leds);
-static DEVICE_ATTR(engine3_leds, S_IRUGO | S_IWUGO,
+static DEVICE_ATTR(engine3_leds, S_IRUGO | S_IWUSR,
show_engine3_leds, store_engine3_leds);
-static DEVICE_ATTR(engine1_load, S_IWUGO, NULL, store_engine1_load);
-static DEVICE_ATTR(engine2_load, S_IWUGO, NULL, store_engine2_load);
-static DEVICE_ATTR(engine3_load, S_IWUGO, NULL, store_engine3_load);
+static DEVICE_ATTR(engine1_load, S_IWUSR, NULL, store_engine1_load);
+static DEVICE_ATTR(engine2_load, S_IWUSR, NULL, store_engine2_load);
+static DEVICE_ATTR(engine3_load, S_IWUSR, NULL, store_engine3_load);
static DEVICE_ATTR(selftest, S_IRUGO, lp5523_selftest, NULL);
static struct attribute *lp5523_attributes[] = {
diff --git a/drivers/leds/leds-mc13783.c b/drivers/leds/leds-mc13783.c
index f05bb08..06a5bb4 100644
--- a/drivers/leds/leds-mc13783.c
+++ b/drivers/leds/leds-mc13783.c
@@ -22,6 +22,7 @@
#include <linux/leds.h>
#include <linux/workqueue.h>
#include <linux/mfd/mc13783.h>
+#include <linux/mfd/core.h>
#include <linux/slab.h>
struct mc13783_led {
@@ -183,7 +184,7 @@ static int __devinit mc13783_led_setup(struct mc13783_led *led, int max_current)
static int __devinit mc13783_leds_prepare(struct platform_device *pdev)
{
- struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
+ struct mc13783_leds_platform_data *pdata = mfd_get_data(pdev);
struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
int ret = 0;
int reg = 0;
@@ -264,7 +265,7 @@ out:
static int __devinit mc13783_led_probe(struct platform_device *pdev)
{
- struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
+ struct mc13783_leds_platform_data *pdata = mfd_get_data(pdev);
struct mc13783_led_platform_data *led_cur;
struct mc13783_led *led, *led_dat;
int ret, i;
@@ -351,7 +352,7 @@ err_free:
static int __devexit mc13783_led_remove(struct platform_device *pdev)
{
- struct mc13783_leds_platform_data *pdata = dev_get_platdata(&pdev->dev);
+ struct mc13783_leds_platform_data *pdata = mfd_get_data(pdev);
struct mc13783_led *led = platform_get_drvdata(pdev);
struct mc13783 *dev = dev_get_drvdata(pdev->dev.parent);
int i;
diff --git a/drivers/leds/leds-net5501.c b/drivers/leds/leds-net5501.c
index 1739557..7e764b8 100644
--- a/drivers/leds/leds-net5501.c
+++ b/drivers/leds/leds-net5501.c
@@ -19,7 +19,7 @@
#include <asm/geode.h>
-static struct gpio_led net5501_leds[] = {
+static const struct gpio_led net5501_leds[] = {
{
.name = "error",
.gpio = 6,
diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index da3fa8d..666daf7 100644
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -69,6 +69,7 @@ static int led_pwm_probe(struct platform_device *pdev)
led_dat->pwm = pwm_request(cur_led->pwm_id,
cur_led->name);
if (IS_ERR(led_dat->pwm)) {
+ ret = PTR_ERR(led_dat->pwm);
dev_err(&pdev->dev, "unable to request PWM %d\n",
cur_led->pwm_id);
goto err;
generated by cgit v1.1 at 2024-05-24 22:18:11 +0000