[PATCH] video: exynos: s6e8ax0: support early fb event of fb_blank()
DORMANTno replies
From: Donghwa Lee <hidden>
Date: 2012-07-23 04:27:34
Also in:
linux-arm-kernel
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
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 <redacted> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> --- 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..e51d024 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 s6e8aa0_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 = s6e8aa0_early_set_power, .set_power = s6e8ax0_set_power, .get_power = s6e8ax0_get_power, };
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1.7.4.1