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fb i.MX23/28: add platform data hook to enable backlight 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2011-01-20 10:13:15 +01:00
parent 26aeeb97a0
commit 8e61335543
2 changed files with 8 additions and 0 deletions
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2
arch/arm/mach-stm/include/mach/fb.h
View File

@ -40,6 +40,8 @@ struct imx_fb_videomode {
void *fixed_screen; /**< if != NULL use this as framebuffer memory */
unsigned fixed_screen_size; /**< framebuffer memory size for fixed_screen */
void (*enable)(int enable); /**< hook to enable backlight */
};
#endif /* __MACH_FB_H */

6
drivers/video/stm.c
View File

@ -255,6 +255,9 @@ static void stmfb_enable_controller(struct fb_info *fb_info)
writel(CTRL1_FIFO_CLEAR, fbi->base + HW_LCDIF_CTRL1 + BIT_CLR);
/* start the engine right now */
writel(CTRL_RUN, fbi->base + HW_LCDIF_CTRL + BIT_SET);
if (fbi->pdata->enable)
fbi->pdata->enable(1);
}
static void stmfb_disable_controller(struct fb_info *fb_info)
@ -263,6 +266,9 @@ static void stmfb_disable_controller(struct fb_info *fb_info)
unsigned loop;
uint32_t reg;
if (fbi->pdata->enable)
fbi->pdata->enable(0);
/*
* Even if we disable the controller here, it will still continue
* until its FIFOs are running out of data