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path: root/drivers/video/backlight/lp855x_bl.c
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Diffstat (limited to 'drivers/video/backlight/lp855x_bl.c')
-rw-r--r--drivers/video/backlight/lp855x_bl.c41
1 files changed, 21 insertions, 20 deletions
diff --git a/drivers/video/backlight/lp855x_bl.c b/drivers/video/backlight/lp855x_bl.c
index c0b41f13bd4..cae80d555e8 100644
--- a/drivers/video/backlight/lp855x_bl.c
+++ b/drivers/video/backlight/lp855x_bl.c
@@ -26,13 +26,15 @@
#define LP8556_EPROM_START 0xA0
#define LP8556_EPROM_END 0xAF
-/* LP8557 Registers */
+/* LP8555/7 Registers */
#define LP8557_BL_CMD 0x00
#define LP8557_BL_MASK 0x01
#define LP8557_BL_ON 0x01
#define LP8557_BL_OFF 0x00
#define LP8557_BRIGHTNESS_CTRL 0x04
#define LP8557_CONFIG 0x10
+#define LP8555_EPROM_START 0x10
+#define LP8555_EPROM_END 0x7A
#define LP8557_EPROM_START 0x10
#define LP8557_EPROM_END 0x1E
@@ -111,6 +113,10 @@ static bool lp855x_is_valid_rom_area(struct lp855x *lp, u8 addr)
start = LP8556_EPROM_START;
end = LP8556_EPROM_END;
break;
+ case LP8555:
+ start = LP8555_EPROM_START;
+ end = LP8555_EPROM_END;
+ break;
case LP8557:
start = LP8557_EPROM_START;
end = LP8557_EPROM_END;
@@ -165,9 +171,14 @@ static int lp855x_configure(struct lp855x *lp)
struct lp855x_platform_data *pd = lp->pdata;
switch (lp->chip_id) {
- case LP8550 ... LP8556:
+ case LP8550:
+ case LP8551:
+ case LP8552:
+ case LP8553:
+ case LP8556:
lp->cfg = &lp855x_dev_cfg;
break;
+ case LP8555:
case LP8557:
lp->cfg = &lp8557_dev_cfg;
break;
@@ -289,7 +300,7 @@ static int lp855x_backlight_register(struct lp855x *lp)
props.brightness = pdata->initial_brightness;
- bl = backlight_device_register(name, lp->dev, lp,
+ bl = devm_backlight_device_register(lp->dev, name, lp->dev, lp,
&lp855x_bl_ops, &props);
if (IS_ERR(bl))
return PTR_ERR(bl);
@@ -299,12 +310,6 @@ static int lp855x_backlight_register(struct lp855x *lp)
return 0;
}
-static void lp855x_backlight_unregister(struct lp855x *lp)
-{
- if (lp->bl)
- backlight_device_unregister(lp->bl);
-}
-
static ssize_t lp855x_get_chip_id(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -394,7 +399,7 @@ static int lp855x_parse_dt(struct device *dev, struct device_node *node)
static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
{
struct lp855x *lp;
- struct lp855x_platform_data *pdata = cl->dev.platform_data;
+ struct lp855x_platform_data *pdata = dev_get_platdata(&cl->dev);
struct device_node *node = cl->dev.of_node;
int ret;
@@ -403,7 +408,7 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
if (ret < 0)
return ret;
- pdata = cl->dev.platform_data;
+ pdata = dev_get_platdata(&cl->dev);
}
if (!i2c_check_functionality(cl->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
@@ -428,29 +433,24 @@ static int lp855x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
ret = lp855x_configure(lp);
if (ret) {
dev_err(lp->dev, "device config err: %d", ret);
- goto err_dev;
+ return ret;
}
ret = lp855x_backlight_register(lp);
if (ret) {
dev_err(lp->dev,
"failed to register backlight. err: %d\n", ret);
- goto err_dev;
+ return ret;
}
ret = sysfs_create_group(&lp->dev->kobj, &lp855x_attr_group);
if (ret) {
dev_err(lp->dev, "failed to register sysfs. err: %d\n", ret);
- goto err_sysfs;
+ return ret;
}
backlight_update_status(lp->bl);
return 0;
-
-err_sysfs:
- lp855x_backlight_unregister(lp);
-err_dev:
- return ret;
}
static int lp855x_remove(struct i2c_client *cl)
@@ -460,7 +460,6 @@ static int lp855x_remove(struct i2c_client *cl)
lp->bl->props.brightness = 0;
backlight_update_status(lp->bl);
sysfs_remove_group(&lp->dev->kobj, &lp855x_attr_group);
- lp855x_backlight_unregister(lp);
return 0;
}
@@ -470,6 +469,7 @@ static const struct of_device_id lp855x_dt_ids[] = {
{ .compatible = "ti,lp8551", },
{ .compatible = "ti,lp8552", },
{ .compatible = "ti,lp8553", },
+ { .compatible = "ti,lp8555", },
{ .compatible = "ti,lp8556", },
{ .compatible = "ti,lp8557", },
{ }
@@ -481,6 +481,7 @@ static const struct i2c_device_id lp855x_ids[] = {
{"lp8551", LP8551},
{"lp8552", LP8552},
{"lp8553", LP8553},
+ {"lp8555", LP8555},
{"lp8556", LP8556},
{"lp8557", LP8557},
{ }