diff options
Diffstat (limited to 'drivers/video/backlight/ld9040.c')
| -rw-r--r-- | drivers/video/backlight/ld9040.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/drivers/video/backlight/ld9040.c b/drivers/video/backlight/ld9040.c index a52a6a7e572e..45f795ab4394 100644 --- a/drivers/video/backlight/ld9040.c +++ b/drivers/video/backlight/ld9040.c @@ -43,7 +43,6 @@ #define MIN_BRIGHTNESS 0 #define MAX_BRIGHTNESS 24 -#define power_is_on(pwr) ((pwr) <= FB_BLANK_NORMAL) struct ld9040 { struct device *dev; @@ -567,15 +566,17 @@ static int ld9040_ldi_disable(struct ld9040 *lcd) return ret; } +static int ld9040_power_is_on(int power) +{ + return power <= FB_BLANK_NORMAL; +} + static int ld9040_power_on(struct ld9040 *lcd) { int ret = 0; - struct lcd_platform_data *pd = NULL; + struct lcd_platform_data *pd; + pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } /* lcd power on */ ld9040_regulator_enable(lcd); @@ -605,14 +606,10 @@ static int ld9040_power_on(struct ld9040 *lcd) static int ld9040_power_off(struct ld9040 *lcd) { - int ret = 0; - struct lcd_platform_data *pd = NULL; + int ret; + struct lcd_platform_data *pd; pd = lcd->lcd_pd; - if (!pd) { - dev_err(lcd->dev, "platform data is NULL.\n"); - return -EFAULT; - } ret = ld9040_ldi_disable(lcd); if (ret) { @@ -632,9 +629,9 @@ static int ld9040_power(struct ld9040 *lcd, int power) { int ret = 0; - if (power_is_on(power) && !power_is_on(lcd->power)) + if (ld9040_power_is_on(power) && !ld9040_power_is_on(lcd->power)) ret = ld9040_power_on(lcd); - else if (!power_is_on(power) && power_is_on(lcd->power)) + else if (!ld9040_power_is_on(power) && ld9040_power_is_on(lcd->power)) ret = ld9040_power_off(lcd); if (!ret) @@ -773,8 +770,9 @@ static int ld9040_probe(struct spi_device *spi) lcd->power = FB_BLANK_POWERDOWN; ld9040_power(lcd, FB_BLANK_UNBLANK); - } else + } else { lcd->power = FB_BLANK_UNBLANK; + } dev_set_drvdata(&spi->dev, lcd); |