Hi everyone, the following patch set directs to enable predecimation for DMA and VRFB which consists of two pacthes. The first patch is based on code written by Lajos Molnar <lajos@xxxxxx> in Android Kernel, which updates the code with predecimation logic thereby increasing the downscaling ability of the DISPC module. The second patch is based on code written by Ville Syrjälä <ville.syrjala@xxxxxxxxx> which aims to avoid synclost errors occurring in OMAP3 due to some undocumented horizontal position and timing related limitations which I faced during testing of the previous patch. The third patch corrects the usage of dispc fclk in scaling checks by replacing it with dispc_core_clk as per suggestions of Ville Syrjälä. Modifications in V3 series: * In 1st patch a check for decim_x_min has been added to avoid assigning of decim_x less than possible leading to assignment of scaling more than 4 times * In 2nd patch -> check_horiz_timing() has been changed to check_horiz_timing_omap3() and function description in code has been added -> clean up code of dispc_mgr_lclk_rate() has been removed * In 3rd patch dispc_core_clk_rate() is introduced. I have tested these patches successfully on OMAP2, OMAP3 AND OMAP4 on the mainline kernel v3.4rc1. Horizontal and vertical predecimation worked fine but skewed images were seen on OMAP2 and OMAP3 on HDMI tv during horizontal predecimation which will be addressed in the future patches. All your comments and suggestions are welcome. Regards, Chandrabhanu Chandrabhanu Mahapatra (3): OMAPDSS: DISPC: Enable predecimation OMAPDSS: DISPC: Handle synclost errors in OMAP3 OMAPDSS: DISPC: Correct DISPC functional clock usage drivers/video/omap2/dss/dispc.c | 354 +++++++++++++++++++++++++++++--------- drivers/video/omap2/dss/dss.h | 1 + 2 files changed, 271 insertions(+), 84 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
