The patch titled
davinci: fb : add suspend/resume suuport for DA8xx/OMAP-L1xx fb driver
has been added to the -mm tree. Its filename is
davinci-fb-add-suspend-resume-suuport-for-da8xx-omap-l1xx-fb-driver.patch
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------------------------------------------------------
Subject: davinci: fb : add suspend/resume suuport for DA8xx/OMAP-L1xx fb driver
From: Chaithrika U S <chaithrika@xxxxxx>
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: Chaithrika U S <chaithrika@xxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Cc: Krzysztof Helt <krzysztof.h1@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/da8xx-fb.c | 29 +++++++++++++++++++++++++++--
1 file changed, 27 insertions(+), 2 deletions(-)
diff -puN drivers/video/da8xx-fb.c~davinci-fb-add-suspend-resume-suuport-for-da8xx-omap-l1xx-fb-driver drivers/video/da8xx-fb.c
--- a/drivers/video/da8xx-fb.c~davinci-fb-add-suspend-resume-suuport-for-da8xx-omap-l1xx-fb-driver
+++ a/drivers/video/da8xx-fb.c
@@ -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 @@ err_request_mem:
#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
_
Patches currently in -mm which might be from chaithrika@xxxxxx are
origin.patch
linux-next.patch
davinci-mmc-add-cpufreq-support.patch
davinci-fb-calculate-the-clock-divider-from-pixel-clock-info.patch
davinci-fb-add-cpufreq-support.patch
davinci-fb-updates-the-driver-in-preparation-for-addition-of-power-management-features.patch
da850-omap-l138-add-callback-to-control-lcd-panel-power.patch
davinci-fb-add-suspend-resume-suuport-for-da8xx-omap-l1xx-fb-driver.patch
davinci-fb-add-framebuffer-blank-operation.patch
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