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Commit 1d3c6c7b authored by Chaithrika U S's avatar Chaithrika U S Committed by Linus Torvalds
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davinci: fb : add suspend/resume suuport for DA8xx/OMAP-L1xx fb driver 

Suspend/resume support DA8xx/OMAP-L1xx frame buffer driver.  This feature
has been tested on DA850/OMAP-L138 EVM.  For the purpose of testing, the
patch series[1] which adds suspend support for DA850/OMAP-L138 SoC was
applied.

[1] http://patchwork.kernel.org/patch/60260/



Signed-off-by: default avatarChaithrika U S <chaithrika@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 36113804

drivers/video/da8xx-fb.c

+27 −2
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/interrupt.h>

#include <linux/clk.h>

#include <linux/cpufreq.h>

#include <linux/console.h>

#include <video/da8xx-fb.h>



#define DRIVER_NAME "da8xx_lcdc"
@@ -930,11 +931,35 @@ static int __init fb_probe(struct platform_device *device) 
#ifdef CONFIG_PM

static int fb_suspend(struct platform_device *dev, pm_message_t state)

{

	 return -EBUSY;

	struct fb_info *info = platform_get_drvdata(dev);

	struct da8xx_fb_par *par = info->par;



	acquire_console_sem();

	if (par->panel_power_ctrl)

		par->panel_power_ctrl(0);



	fb_set_suspend(info, 1);

	lcd_disable_raster();

	clk_disable(par->lcdc_clk);

	release_console_sem();



	return 0;

}

static int fb_resume(struct platform_device *dev)

{

	 return -EBUSY;

	struct fb_info *info = platform_get_drvdata(dev);

	struct da8xx_fb_par *par = info->par;



	acquire_console_sem();

	if (par->panel_power_ctrl)

		par->panel_power_ctrl(1);



	clk_enable(par->lcdc_clk);

	lcd_enable_raster();

	fb_set_suspend(info, 0);

	release_console_sem();



	return 0;

}

#else

#define fb_suspend NULL