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path: root/drivers/leds/leds-88pm860x.c
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Diffstat (limited to 'drivers/leds/leds-88pm860x.c')
-rw-r--r--drivers/leds/leds-88pm860x.c205
1 files changed, 98 insertions, 107 deletions
diff --git a/drivers/leds/leds-88pm860x.c b/drivers/leds/leds-88pm860x.c
index 61897cfeeda6..b7e8cc0957fc 100644
--- a/drivers/leds/leds-88pm860x.c
+++ b/drivers/leds/leds-88pm860x.c
@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/leds.h>
@@ -20,18 +21,12 @@
#include <linux/mfd/88pm860x.h>
#include <linux/module.h>
-#define LED_PWM_SHIFT (3)
#define LED_PWM_MASK (0x1F)
#define LED_CURRENT_MASK (0x07 << 5)
-#define LED_BLINK_ON_MASK (0x07)
#define LED_BLINK_MASK (0x7F)
-#define LED_BLINK_ON(x) ((x & 0x7) * 66 + 66)
-#define LED_BLINK_ON_MIN LED_BLINK_ON(0)
-#define LED_BLINK_ON_MAX LED_BLINK_ON(0x7)
#define LED_ON_CONTINUOUS (0x0F << 3)
-#define LED_TO_ON(x) ((x - 66) / 66)
#define LED1_BLINK_EN (1 << 1)
#define LED2_BLINK_EN (1 << 2)
@@ -49,85 +44,25 @@ struct pm860x_led {
unsigned char brightness;
unsigned char current_brightness;
- int blink_data;
- int blink_time;
- int blink_on;
- int blink_off;
+ int reg_control;
+ int reg_blink;
+ int blink_mask;
};
-/* return offset of color register */
-static inline int __led_off(int port)
-{
- int ret = -EINVAL;
-
- switch (port) {
- case PM8606_LED1_RED:
- case PM8606_LED1_GREEN:
- case PM8606_LED1_BLUE:
- ret = port - PM8606_LED1_RED + PM8606_RGB1B;
- break;
- case PM8606_LED2_RED:
- case PM8606_LED2_GREEN:
- case PM8606_LED2_BLUE:
- ret = port - PM8606_LED2_RED + PM8606_RGB2B;
- break;
- }
- return ret;
-}
-
-/* return offset of blink register */
-static inline int __blink_off(int port)
-{
- int ret = -EINVAL;
-
- switch (port) {
- case PM8606_LED1_RED:
- case PM8606_LED1_GREEN:
- case PM8606_LED1_BLUE:
- ret = PM8606_RGB1A;
- break;
- case PM8606_LED2_RED:
- case PM8606_LED2_GREEN:
- case PM8606_LED2_BLUE:
- ret = PM8606_RGB2A;
- break;
- }
- return ret;
-}
-
-static inline int __blink_ctl_mask(int port)
-{
- int ret = -EINVAL;
-
- switch (port) {
- case PM8606_LED1_RED:
- case PM8606_LED1_GREEN:
- case PM8606_LED1_BLUE:
- ret = LED1_BLINK_EN;
- break;
- case PM8606_LED2_RED:
- case PM8606_LED2_GREEN:
- case PM8606_LED2_BLUE:
- ret = LED2_BLINK_EN;
- break;
- }
- return ret;
-}
-
static int led_power_set(struct pm860x_chip *chip, int port, int on)
{
int ret = -EINVAL;
switch (port) {
- case PM8606_LED1_RED:
- case PM8606_LED1_GREEN:
- case PM8606_LED1_BLUE:
+ case 0:
+ case 1:
+ case 2:
ret = on ? pm8606_osc_enable(chip, RGB1_ENABLE) :
pm8606_osc_disable(chip, RGB1_ENABLE);
break;
- case PM8606_LED2_RED:
- case PM8606_LED2_GREEN:
- case PM8606_LED2_BLUE:
+ case 3:
+ case 4:
+ case 5:
ret = on ? pm8606_osc_enable(chip, RGB2_ENABLE) :
pm8606_osc_disable(chip, RGB2_ENABLE);
break;
@@ -141,7 +76,7 @@ static void pm860x_led_work(struct work_struct *work)
struct pm860x_led *led;
struct pm860x_chip *chip;
unsigned char buf[3];
- int mask, ret;
+ int ret;
led = container_of(work, struct pm860x_led, work);
chip = led->chip;
@@ -149,34 +84,34 @@ static void pm860x_led_work(struct work_struct *work)
if ((led->current_brightness == 0) && led->brightness) {
led_power_set(chip, led->port, 1);
if (led->iset) {
- pm860x_set_bits(led->i2c, __led_off(led->port),
+ pm860x_set_bits(led->i2c, led->reg_control,
LED_CURRENT_MASK, led->iset);
}
- pm860x_set_bits(led->i2c, __blink_off(led->port),
+ pm860x_set_bits(led->i2c, led->reg_blink,
LED_BLINK_MASK, LED_ON_CONTINUOUS);
- mask = __blink_ctl_mask(led->port);
- pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, mask);
+ pm860x_set_bits(led->i2c, PM8606_WLED3B, led->blink_mask,
+ led->blink_mask);
}
- pm860x_set_bits(led->i2c, __led_off(led->port), LED_PWM_MASK,
+ pm860x_set_bits(led->i2c, led->reg_control, LED_PWM_MASK,
led->brightness);
if (led->brightness == 0) {
- pm860x_bulk_read(led->i2c, __led_off(led->port), 3, buf);
+ pm860x_bulk_read(led->i2c, led->reg_control, 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),
+ pm860x_set_bits(led->i2c, led->reg_control,
LED_CURRENT_MASK, 0);
- mask = __blink_ctl_mask(led->port);
- pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, 0);
+ pm860x_set_bits(led->i2c, PM8606_WLED3B,
+ led->blink_mask, 0);
led_power_set(chip, led->port, 0);
}
}
led->current_brightness = led->brightness;
dev_dbg(chip->dev, "Update LED. (reg:%d, brightness:%d)\n",
- __led_off(led->port), led->brightness);
+ led->reg_control, led->brightness);
mutex_unlock(&led->lock);
}
@@ -189,39 +124,92 @@ static void pm860x_led_set(struct led_classdev *cdev,
schedule_work(&data->work);
}
+#ifdef CONFIG_OF
+static int pm860x_led_dt_init(struct platform_device *pdev,
+ struct pm860x_led *data)
+{
+ struct device_node *nproot = pdev->dev.parent->of_node, *np;
+ int iset = 0;
+ if (!nproot)
+ return -ENODEV;
+ nproot = of_find_node_by_name(nproot, "leds");
+ if (!nproot) {
+ dev_err(&pdev->dev, "failed to find leds node\n");
+ return -ENODEV;
+ }
+ for_each_child_of_node(nproot, np) {
+ if (!of_node_cmp(np->name, data->name)) {
+ of_property_read_u32(np, "marvell,88pm860x-iset",
+ &iset);
+ data->iset = PM8606_LED_CURRENT(iset);
+ break;
+ }
+ }
+ return 0;
+}
+#else
+#define pm860x_led_dt_init(x, y) (-1)
+#endif
+
static int pm860x_led_probe(struct platform_device *pdev)
{
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
- struct pm860x_led_pdata *pdata;
+ struct pm860x_led_pdata *pdata = pdev->dev.platform_data;
struct pm860x_led *data;
struct resource *res;
- int ret;
-
- res = platform_get_resource(pdev, IORESOURCE_IO, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "No I/O resource!\n");
- return -EINVAL;
- }
-
- pdata = pdev->dev.platform_data;
- if (pdata == NULL) {
- dev_err(&pdev->dev, "No platform data!\n");
- return -EINVAL;
- }
+ int ret = 0;
data = devm_kzalloc(&pdev->dev, sizeof(struct pm860x_led), GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
- strncpy(data->name, res->name, MFD_NAME_SIZE - 1);
+ res = platform_get_resource_byname(pdev, IORESOURCE_REG, "control");
+ if (!res) {
+ dev_err(&pdev->dev, "No REG resource for control\n");
+ ret = -ENXIO;
+ goto out;
+ }
+ data->reg_control = res->start;
+ res = platform_get_resource_byname(pdev, IORESOURCE_REG, "blink");
+ if (!res) {
+ dev_err(&pdev->dev, "No REG resource for blink\n");
+ ret = -ENXIO;
+ goto out;
+ }
+ data->reg_blink = res->start;
+ memset(data->name, 0, MFD_NAME_SIZE);
+ switch (pdev->id) {
+ case 0:
+ data->blink_mask = LED1_BLINK_EN;
+ sprintf(data->name, "led0-red");
+ break;
+ case 1:
+ data->blink_mask = LED1_BLINK_EN;
+ sprintf(data->name, "led0-green");
+ break;
+ case 2:
+ data->blink_mask = LED1_BLINK_EN;
+ sprintf(data->name, "led0-blue");
+ break;
+ case 3:
+ data->blink_mask = LED2_BLINK_EN;
+ sprintf(data->name, "led1-red");
+ break;
+ case 4:
+ data->blink_mask = LED2_BLINK_EN;
+ sprintf(data->name, "led1-green");
+ break;
+ case 5:
+ data->blink_mask = LED2_BLINK_EN;
+ sprintf(data->name, "led1-blue");
+ break;
+ }
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 = pdata->flags;
- if (data->port < 0) {
- dev_err(&pdev->dev, "check device failed\n");
- return -EINVAL;
- }
+ data->port = pdev->id;
+ if (pm860x_led_dt_init(pdev, data))
+ if (pdata)
+ data->iset = pdata->iset;
data->current_brightness = 0;
data->cdev.name = data->name;
@@ -236,6 +224,9 @@ static int pm860x_led_probe(struct platform_device *pdev)
}
pm860x_led_set(&data->cdev, 0);
return 0;
+out:
+ devm_kfree(&pdev->dev, data);
+ return ret;
}
static int pm860x_led_remove(struct platform_device *pdev)
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-14 15:43:05 +0000