This patch supports early fb event of fb_blank().
- In case of lcd power off : call early_set_power() interface and lcd
power is off. And then framebuffer is blanked.
- In case of lcd power on : First, framebuffer is unblanked, and then
call set_power() interface to turn lcd on.
Signed-off-by: Donghwa Lee <dh09.lee@xxxxxxxxxxx>
Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
Changes of v1:
- changes function name from s6e8aa0_early_set_power() to
s6e8ax0_early_set_power()
drivers/video/exynos/s6e8ax0.c | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/drivers/video/exynos/s6e8ax0.c b/drivers/video/exynos/s6e8ax0.c
index 05d080b..bfb1919 100644
--- a/drivers/video/exynos/s6e8ax0.c
+++ b/drivers/video/exynos/s6e8ax0.c
@@ -663,6 +663,37 @@ static int s6e8ax0_gamma_ctrl(struct s6e8ax0 *lcd, int gamma)
return 0;
}
+static int s6e8ax0_early_set_power(struct lcd_device *ld, int power)
+{
+ struct s6e8ax0 *lcd = lcd_get_data(ld);
+ struct mipi_dsim_master_ops *ops = lcd_to_master_ops(lcd);
+ int ret = 0;
+
+ if (power != FB_BLANK_UNBLANK && power != FB_BLANK_POWERDOWN &&
+ power != FB_BLANK_NORMAL) {
+ dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");
+ return -EINVAL;
+ }
+
+ if (lcd->power == power) {
+ dev_err(lcd->dev, "power mode is same as previous one.\n");
+ return -EINVAL;
+ }
+
+ if (ops->set_early_blank_mode) {
+ /* LCD power off */
+ if ((POWER_IS_OFF(power) && POWER_IS_ON(lcd->power))
+ || (POWER_IS_ON(lcd->power) && POWER_IS_NRM(power))) {
+ ret = ops->set_early_blank_mode(lcd_to_master(lcd),
+ power);
+ if (!ret && lcd->power != power)
+ lcd->power = power;
+ }
+ }
+
+ return ret;
+}
+
static int s6e8ax0_set_power(struct lcd_device *ld, int power)
{
struct s6e8ax0 *lcd = lcd_get_data(ld);
@@ -731,6 +762,7 @@ static int s6e8ax0_set_brightness(struct backlight_device *bd)
}
static struct lcd_ops s6e8ax0_lcd_ops = {
+ .early_set_power = s6e8ax0_early_set_power,
.set_power = s6e8ax0_set_power,
.get_power = s6e8ax0_get_power,
};
--
1.7.4.1
--
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