From 9e4a0fc76549e1105fd4a2c7e03871c31110387e Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Fri, 24 Aug 2012 16:59:26 +0530 Subject: [PATCH] OMAPDSS: DISPC: Configure writeback specific parameters in dispc_wb_setup() Configure some of the writeback specific parameters in dispc_wb_setup(). The writeback parameters configured are: truncation: This needs to be set if the color depth input to writeback is more than the color depth of the color mode we want to store in memory. writeback mode: This configures whether we want to use writeback in mem to mem or capture mode. This information will be directly passed by APPLY later. Signed-off-by: Archit Taneja --- drivers/video/omap2/dss/dispc.c | 28 ++++++++++++++++++++++++++-- drivers/video/omap2/dss/dss.h | 2 +- 2 files changed, 27 insertions(+), 3 deletions(-) diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index 4d8e0458387..9f083a95274 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -2482,13 +2482,15 @@ int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi, } int dispc_wb_setup(const struct omap_dss_writeback_info *wi, - const struct omap_video_timings *mgr_timings) + bool mem_to_mem, const struct omap_video_timings *mgr_timings) { int r; + u32 l; enum omap_plane plane = OMAP_DSS_WB; const int pos_x = 0, pos_y = 0; const u8 zorder = 0, global_alpha = 0; const bool replication = false; + bool truncation; int in_width = mgr_timings->x_res; int in_height = mgr_timings->y_res; enum omap_overlay_caps caps = @@ -2503,7 +2505,29 @@ int dispc_wb_setup(const struct omap_dss_writeback_info *wi, wi->buf_width, pos_x, pos_y, in_width, in_height, wi->width, wi->height, wi->color_mode, wi->rotation, wi->mirror, zorder, wi->pre_mult_alpha, global_alpha, wi->rotation_type, - replication, mgr_timings, false); + replication, mgr_timings, mem_to_mem); + + switch (wi->color_mode) { + case OMAP_DSS_COLOR_RGB16: + case OMAP_DSS_COLOR_RGB24P: + case OMAP_DSS_COLOR_ARGB16: + case OMAP_DSS_COLOR_RGBA16: + case OMAP_DSS_COLOR_RGB12U: + case OMAP_DSS_COLOR_ARGB16_1555: + case OMAP_DSS_COLOR_XRGB16_1555: + case OMAP_DSS_COLOR_RGBX16: + truncation = true; + break; + default: + truncation = false; + break; + } + + /* setup extra DISPC_WB_ATTRIBUTES */ + l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane)); + l = FLD_MOD(l, truncation, 10, 10); /* TRUNCATIONENABLE */ + l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */ + dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l); return r; } diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h index 3f9208e8820..8677f515731 100644 --- a/drivers/video/omap2/dss/dss.h +++ b/drivers/video/omap2/dss/dss.h @@ -488,7 +488,7 @@ void dispc_mgr_setup(enum omap_channel channel, void dispc_wb_set_channel_in(enum dss_writeback_channel channel); int dispc_wb_setup(const struct omap_dss_writeback_info *wi, - const struct omap_video_timings *timings); + bool mem_to_mem, const struct omap_video_timings *timings); /* VENC */ #ifdef CONFIG_OMAP2_DSS_VENC -- 2.41.0