The patch titled
Video/Framebuffer: add fuctional power management support to Blackfin BF54x LQ043 framebuffer driver
has been added to the -mm tree. Its filename is
video-framebuffer-add-fuctional-power-management-support-to-blackfin-bf54x-lq043-framebuffer-driver.patch
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------------------------------------------------------
Subject: Video/Framebuffer: add fuctional power management support to Blackfin BF54x LQ043 framebuffer driver
From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Fix bug: does nor properply resume after suspend mem
Fix for PM_SUSPEND_MEM: Save and restore peripheral base and DMA registers
Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Signed-off-by: Bryan Wu <cooloney@xxxxxxxxxx>
Acked-by: Krzysztof Helt <krzysztof.h1@xxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/bf54x-lq043fb.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff -puN drivers/video/bf54x-lq043fb.c~video-framebuffer-add-fuctional-power-management-support-to-blackfin-bf54x-lq043-framebuffer-driver drivers/video/bf54x-lq043fb.c
--- a/drivers/video/bf54x-lq043fb.c~video-framebuffer-add-fuctional-power-management-support-to-blackfin-bf54x-lq043-framebuffer-driver
+++ a/drivers/video/bf54x-lq043fb.c
@@ -733,7 +733,6 @@ static int bfin_bf54x_remove(struct plat
static int bfin_bf54x_suspend(struct platform_device *pdev, pm_message_t state)
{
struct fb_info *fbinfo = platform_get_drvdata(pdev);
- struct bfin_bf54xfb_info *info = fbinfo->par;
bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() & ~EPPI_EN);
disable_dma(CH_EPPI0);
@@ -747,8 +746,18 @@ static int bfin_bf54x_resume(struct plat
struct fb_info *fbinfo = platform_get_drvdata(pdev);
struct bfin_bf54xfb_info *info = fbinfo->par;
- enable_dma(CH_EPPI0);
- bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
+ if (info->lq043_open_cnt) {
+
+ bfin_write_EPPI0_CONTROL(0);
+ SSYNC();
+
+ config_dma(info);
+ config_ppi(info);
+
+ /* start dma */
+ enable_dma(CH_EPPI0);
+ bfin_write_EPPI0_CONTROL(bfin_read_EPPI0_CONTROL() | EPPI_EN);
+ }
return 0;
}
_
Patches currently in -mm which might be from michael.hennerich@xxxxxxxxxx are
origin.patch
linux-next.patch
input-touchscreen-driver-add-support-ad7877-touchscreen-driver.patch
video-framebuffer-add-fuctional-power-management-support-to-blackfin-bf54x-lq043-framebuffer-driver.patch
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