diff options
Diffstat (limited to 'src/soc/mediatek/common')
| -rw-r--r-- | src/soc/mediatek/common/dsi.c | 92 |
1 files changed, 48 insertions, 44 deletions
diff --git a/src/soc/mediatek/common/dsi.c b/src/soc/mediatek/common/dsi.c index 9222cb0c4b..be99fe8992 100644 --- a/src/soc/mediatek/common/dsi.c +++ b/src/soc/mediatek/common/dsi.c @@ -74,47 +74,43 @@ __weak void mtk_dsi_override_phy_timing(struct mtk_phy_timing *timing) /* Do nothing. */ } -static void mtk_dsi_phy_timing(u32 data_rate, struct mtk_phy_timing *phy_timing) +static void mtk_dsi_phy_timing(u32 data_rate, struct mtk_phy_timing *timing) { - u32 cycle_time, ui; + u32 timcon0, timcon1, timcon2, timcon3; u32 data_rate_mhz = DIV_ROUND_UP(data_rate, MHz); - ui = 1000 / data_rate_mhz + 0x01; - cycle_time = 8000 / data_rate_mhz + 0x01; - - memset(phy_timing, 0, sizeof(*phy_timing)); + memset(timing, 0, sizeof(*timing)); - phy_timing->lpx = DIV_ROUND_UP(60, cycle_time); - phy_timing->da_hs_prepare = DIV_ROUND_UP((50 + 5 * ui), cycle_time); - phy_timing->da_hs_zero = DIV_ROUND_UP((110 + 6 * ui), cycle_time); - phy_timing->da_hs_trail = DIV_ROUND_UP(((4 * ui) + 77), cycle_time); + timing->lpx = (60 * data_rate_mhz / (8 * 1000)) + 1; + timing->da_hs_prepare = (80 * data_rate_mhz + 4 * 1000) / 8000; + timing->da_hs_zero = (170 * data_rate_mhz + 10 * 1000) / 8000 + 1 - + timing->da_hs_prepare; + timing->da_hs_trail = timing->da_hs_prepare + 1; - phy_timing->ta_go = 4U * phy_timing->lpx; - phy_timing->ta_sure = 3U * phy_timing->lpx / 2U; - phy_timing->ta_get = 5U * phy_timing->lpx; - phy_timing->da_hs_exit = 2U * phy_timing->lpx; + timing->ta_go = 4 * timing->lpx - 2; + timing->ta_sure = timing->lpx + 2; + timing->ta_get = 4 * timing->lpx; + timing->da_hs_exit = 2 * timing->lpx + 1; - phy_timing->da_hs_sync = 1; - phy_timing->clk_hs_zero = DIV_ROUND_UP(0x150U, cycle_time); - phy_timing->clk_hs_trail = DIV_ROUND_UP(0x64U, cycle_time) + 0xaU; + timing->da_hs_sync = 1; - phy_timing->clk_hs_prepare = DIV_ROUND_UP(0x40U, cycle_time); - phy_timing->clk_hs_post = DIV_ROUND_UP(80U + 52U * ui, cycle_time); - phy_timing->clk_hs_exit = 2U * phy_timing->lpx; + timing->clk_hs_prepare = 70 * data_rate_mhz / (8 * 1000); + timing->clk_hs_post = timing->clk_hs_prepare + 8; + timing->clk_hs_trail = timing->clk_hs_prepare; + timing->clk_hs_zero = timing->clk_hs_trail * 4; + timing->clk_hs_exit = 2 * timing->clk_hs_trail; /* Allow board-specific tuning. */ - mtk_dsi_override_phy_timing(phy_timing); - - u32 timcon0, timcon1, timcon2, timcon3; + mtk_dsi_override_phy_timing(timing); - timcon0 = phy_timing->lpx | phy_timing->da_hs_prepare << 8 | - phy_timing->da_hs_zero << 16 | phy_timing->da_hs_trail << 24; - timcon1 = phy_timing->ta_go | phy_timing->ta_sure << 8 | - phy_timing->ta_get << 16 | phy_timing->da_hs_exit << 24; - timcon2 = phy_timing->da_hs_sync << 8 | phy_timing->clk_hs_zero << 16 | - phy_timing->clk_hs_trail << 24; - timcon3 = phy_timing->clk_hs_prepare | phy_timing->clk_hs_post << 8 | - phy_timing->clk_hs_exit << 16; + timcon0 = timing->lpx | timing->da_hs_prepare << 8 | + timing->da_hs_zero << 16 | timing->da_hs_trail << 24; + timcon1 = timing->ta_go | timing->ta_sure << 8 | + timing->ta_get << 16 | timing->da_hs_exit << 24; + timcon2 = timing->da_hs_sync << 8 | timing->clk_hs_zero << 16 | + timing->clk_hs_trail << 24; + timcon3 = timing->clk_hs_prepare | timing->clk_hs_post << 8 | + timing->clk_hs_exit << 16; write32(&dsi0->dsi_phy_timecon0, timcon0); write32(&dsi0->dsi_phy_timecon1, timcon1); @@ -180,6 +176,8 @@ static void mtk_dsi_config_vdo_timing(u32 mode_flags, u32 format, u32 lanes, const struct mtk_phy_timing *phy_timing) { u32 hsync_active_byte; + u32 hbp; + u32 hfp; u32 hbp_byte; u32 hfp_byte; u32 vbp_byte; @@ -199,17 +197,20 @@ static void mtk_dsi_config_vdo_timing(u32 mode_flags, u32 format, u32 lanes, write32(&dsi0->dsi_vfp_nl, vfp_byte); write32(&dsi0->dsi_vact_nl, edid->mode.va); - unsigned int hspw = 0; - if (mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) - hspw = edid->mode.hspw; - - hbp_byte = (edid->mode.hbl - edid->mode.hso - hspw - edid->mode.hborder) - * bytes_per_pixel - 10; hsync_active_byte = edid->mode.hspw * bytes_per_pixel - 10; - hfp_byte = (edid->mode.hso - edid->mode.hborder) * bytes_per_pixel; + + hbp = edid->mode.hbl - edid->mode.hso - edid->mode.hspw - + edid->mode.hborder; + hfp = edid->mode.hso - edid->mode.hborder; + + if (mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) + hbp_byte = hbp * bytes_per_pixel - 10; + else + hbp_byte = (hbp + edid->mode.hspw) * bytes_per_pixel - 10; + hfp_byte = hfp * bytes_per_pixel; data_phy_cycles = phy_timing->lpx + phy_timing->da_hs_prepare + - phy_timing->da_hs_zero + phy_timing->da_hs_exit + 2; + phy_timing->da_hs_zero + phy_timing->da_hs_exit + 3; u32 delta = 12; if (mode_flags & MIPI_DSI_MODE_VIDEO_BURST) @@ -218,11 +219,14 @@ static void mtk_dsi_config_vdo_timing(u32 mode_flags, u32 format, u32 lanes, u32 d_phy = phy_timing->d_phy; if (d_phy == 0) d_phy = data_phy_cycles * lanes + delta; - if (hfp_byte > d_phy) - hfp_byte -= d_phy; - else - printk(BIOS_ERR, "HFP is not greater than d-phy, FPS < 60Hz " - "and the panel may not work properly.\n"); + + if ((hfp + hbp) * bytes_per_pixel > d_phy) { + hfp_byte -= d_phy * hfp / (hfp + hbp); + hbp_byte -= d_phy * hbp / (hfp + hbp); + } else { + printk(BIOS_ERR, "HFP plus HBP is not greater than d_phy, " + "the panel may not work properly.\n"); + } write32(&dsi0->dsi_hsa_wc, hsync_active_byte); write32(&dsi0->dsi_hbp_wc, hbp_byte); |