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 <[email protected]> --- drivers/video/da8xx-fb.c | 29 +++++++++++++++++++++++++++-- 1 files changed, 27 insertions(+), 2 deletions(-) diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c index b3c22e1..fcaa344 100644 --- a/drivers/video/da8xx-fb.c +++ b/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 -- 1.5.6 _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
