diff options
Diffstat (limited to 'recipes/linux/linux-omap-pm-2.6.29/dss2/0059-DSS2-DSI-configure-ENTER-EXIT_HS_MODE_LATENCY.patch')
| -rw-r--r-- | recipes/linux/linux-omap-pm-2.6.29/dss2/0059-DSS2-DSI-configure-ENTER-EXIT_HS_MODE_LATENCY.patch | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/recipes/linux/linux-omap-pm-2.6.29/dss2/0059-DSS2-DSI-configure-ENTER-EXIT_HS_MODE_LATENCY.patch b/recipes/linux/linux-omap-pm-2.6.29/dss2/0059-DSS2-DSI-configure-ENTER-EXIT_HS_MODE_LATENCY.patch new file mode 100644 index 0000000000..9ca0f2eab1 --- /dev/null +++ b/recipes/linux/linux-omap-pm-2.6.29/dss2/0059-DSS2-DSI-configure-ENTER-EXIT_HS_MODE_LATENCY.patch @@ -0,0 +1,97 @@ +From 750f7ddc0881834f3400c40e9a59d11f9427cf99 Mon Sep 17 00:00:00 2001 +From: Tomi Valkeinen <tomi.valkeinen@nokia.com> +Date: Wed, 29 Apr 2009 17:26:30 +0300 +Subject: [PATCH 59/69] DSS2: DSI: configure ENTER/EXIT_HS_MODE_LATENCY + +--- + drivers/video/omap2/dss/dsi.c | 49 ++++++++++++++++++++++++++++++++-------- + 1 files changed, 39 insertions(+), 10 deletions(-) + +diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c +index d8df353..5225ed6 100644 +--- a/drivers/video/omap2/dss/dsi.c ++++ b/drivers/video/omap2/dss/dsi.c +@@ -2309,15 +2309,26 @@ static int dsi_proto_config(struct omap_display *display) + return 0; + } + +-static void dsi_proto_timings(void) +-{ +- int tlpx_half, tclk_zero, tclk_prepare, tclk_trail; +- int tclk_pre, tclk_post; +- int ddr_clk_pre, ddr_clk_post; ++static void dsi_proto_timings(struct omap_display *display) ++{ ++ unsigned tlpx, tclk_zero, tclk_prepare, tclk_trail; ++ unsigned tclk_pre, tclk_post; ++ unsigned ths_prepare, ths_prepare_ths_zero, ths_zero; ++ unsigned ths_trail, ths_exit; ++ unsigned ddr_clk_pre, ddr_clk_post; ++ unsigned enter_hs_mode_lat, exit_hs_mode_lat; ++ unsigned ths_eot; + u32 r; + ++ r = dsi_read_reg(DSI_DSIPHY_CFG0); ++ ths_prepare = FLD_GET(r, 31, 24); ++ ths_prepare_ths_zero = FLD_GET(r, 23, 16); ++ ths_zero = ths_prepare_ths_zero - ths_prepare; ++ ths_trail = FLD_GET(r, 15, 8); ++ ths_exit = FLD_GET(r, 7, 0); ++ + r = dsi_read_reg(DSI_DSIPHY_CFG1); +- tlpx_half = FLD_GET(r, 22, 16); ++ tlpx = FLD_GET(r, 22, 16) * 2; + tclk_trail = FLD_GET(r, 15, 8); + tclk_zero = FLD_GET(r, 7, 0); + +@@ -2329,17 +2340,35 @@ static void dsi_proto_timings(void) + /* min 60ns + 52*UI */ + tclk_post = ns2ddr(60) + 26; + +- ddr_clk_pre = (tclk_pre + tlpx_half*2 + tclk_zero + tclk_prepare) / 4; +- ddr_clk_post = (tclk_post + tclk_trail) / 4; ++ ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare, ++ 4); ++ ddr_clk_post = DIV_ROUND_UP(tclk_post + tclk_trail, 4); + + r = dsi_read_reg(DSI_CLK_TIMING); + r = FLD_MOD(r, ddr_clk_pre, 15, 8); + r = FLD_MOD(r, ddr_clk_post, 7, 0); + dsi_write_reg(DSI_CLK_TIMING, r); + +- DSSDBG("ddr_clk_pre %d, ddr_clk_post %d\n", ++ DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n", + ddr_clk_pre, + ddr_clk_post); ++ ++ /* ths_eot is 2 for 2 datalanes and 4 for 1 datalane */ ++ if (display->hw_config.u.dsi.data1_lane != 0 && ++ display->hw_config.u.dsi.data2_lane != 0) ++ ths_eot = 2; ++ else ++ ths_eot = 4; ++ ++ enter_hs_mode_lat = DIV_ROUND_UP(tlpx + ths_prepare + ths_zero, 4) + 4; ++ exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot; ++ ++ r = FLD_VAL(enter_hs_mode_lat, 31, 16) | ++ FLD_VAL(exit_hs_mode_lat, 15, 0); ++ dsi_write_reg(DSI_VM_TIMING7, r); ++ ++ DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n", ++ enter_hs_mode_lat, exit_hs_mode_lat); + } + + +@@ -3340,7 +3369,7 @@ static int dsi_display_init_dsi(struct omap_display *display) + + _dsi_print_reset_status(); + +- dsi_proto_timings(); ++ dsi_proto_timings(display); + dsi_set_lp_clk_divisor(); + + if (1) +-- +1.6.2.4 + |