# \[PATCH 1/1\] Video/Framebuffer: add fuctional power management support to Blackfin BF54x LQ043 framebuffer driver - Subsystems: FRAMEBUFFER LAYER, THE REST - Maintainers: Helge Deller, Linus Torvalds - List: linux-fbdev - 2 messages, 2 authors - Page: https://ratatoskr.run/linux-fbdev/2008/08/1139616/t ## \[PATCH 1/1\] Video/Framebuffer: add fuctional power management support to Blackfin BF54x LQ043 framebuffer driver - From: Bryan Wu \ - Date: 2008-08-15 09:07:28 - Message: https://ratatoskr.run/linux-fbdev/2008/08/1139616.md ```text From: Michael Hennerich 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 Signed-off-by: Bryan Wu --- drivers/video/bf54x-lq043fb.c | 15 ++++++++++++--- 1 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c index 940467a..6d5aa80 100644 --- a/drivers/video/bf54x-lq043fb.c +++ b/drivers/video/bf54x-lq043fb.c @@ -733,7 +733,6 @@ static int bfin_bf54x_remove(struct platform_device *pdev) 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 platform_device *pdev) 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; } -- 1.5.6 ``` ## Re: \[Linux-fbdev-devel\] \[PATCH 1/1\] Video/Framebuffer: add fuctional power management support to Blackfin BF54x LQ043 framebuffer driver - From: Krzysztof Helt \ - Date: 2008-08-17 18:40:43 - Message: https://ratatoskr.run/linux-fbdev/2008/08/1140379.md ```text On Fri, 15 Aug 2008 17:07:08 +0800 Bryan Wu [ref] wrote: > From: Michael Hennerich > > 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 > Signed-off-by: Bryan Wu > --- > drivers/video/bf54x-lq043fb.c | 15 ++++++++++++--- > 1 files changed, 12 insertions(+), 3 deletions(-) > Acked-by: Krzysztof Helt ---------------------------------------------------------------------- Igrzyska z nagrodami! Kliknij>>>> http://link.interia.pl/f1edb ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ ```