From: Jani Nikula Date: Wed, 16 Mar 2016 10:21:40 +0000 (+0200) Subject: drm/i915/dsi: start using enum mipi_dsi_pixel_format X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1e78aa014b84ff23f99daa0e0832b01337244062;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git drm/i915/dsi: start using enum mipi_dsi_pixel_format A small step moving us closer to DRM MIPI DSI code. Use enum mipi_dsi_pixel_format instead of our own. The first benefit is being able to use common mipi_dsi_pixel_format_to_bpp(). There's a little back and forth conversion with the VBT -> enum -> register, since we have just shoved the VBT value into the register directly. Longer term, all the VBT parsing and deciphering should be done in intel_bios.c, and abstracted there. Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Link: http://patchwork.freedesktop.org/patch/msgid/1458123700-16003-2-git-send-email-jani.nikula@intel.com --- diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 01b8e9f4c272..ea78b0bf7e14 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -787,7 +787,7 @@ static void set_dsi_timings(struct drm_encoder *encoder, struct drm_i915_private *dev_priv = dev->dev_private; struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); enum port port; - unsigned int bpp = dsi_pixel_format_bpp(intel_dsi->pixel_format); + unsigned int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); unsigned int lane_count = intel_dsi->lane_count; u16 hactive, hfp, hsync, hbp, vfp, vsync, vbp; @@ -849,6 +849,23 @@ static void set_dsi_timings(struct drm_encoder *encoder, } } +static u32 pixel_format_to_reg(enum mipi_dsi_pixel_format fmt) +{ + switch (fmt) { + case MIPI_DSI_FMT_RGB888: + return VID_MODE_FORMAT_RGB888; + case MIPI_DSI_FMT_RGB666: + return VID_MODE_FORMAT_RGB666; + case MIPI_DSI_FMT_RGB666_PACKED: + return VID_MODE_FORMAT_RGB666_PACKED; + case MIPI_DSI_FMT_RGB565: + return VID_MODE_FORMAT_RGB565; + default: + MISSING_CASE(fmt); + return VID_MODE_FORMAT_RGB666; + } +} + static void intel_dsi_prepare(struct intel_encoder *intel_encoder) { struct drm_encoder *encoder = &intel_encoder->base; @@ -858,7 +875,7 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder) struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder); const struct drm_display_mode *adjusted_mode = &intel_crtc->config->base.adjusted_mode; enum port port; - unsigned int bpp = dsi_pixel_format_bpp(intel_dsi->pixel_format); + unsigned int bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); u32 val, tmp; u16 mode_hdisplay; @@ -917,9 +934,7 @@ static void intel_dsi_prepare(struct intel_encoder *intel_encoder) val |= CMD_MODE_DATA_WIDTH_8_BIT; /* XXX */ } else { val |= intel_dsi->channel << VID_MODE_CHANNEL_NUMBER_SHIFT; - - /* XXX: cross-check bpp vs. pixel format? */ - val |= intel_dsi->pixel_format; + val |= pixel_format_to_reg(intel_dsi->pixel_format); } tmp = 0; diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h index 92f39227b361..54f072cd78f1 100644 --- a/drivers/gpu/drm/i915/intel_dsi.h +++ b/drivers/gpu/drm/i915/intel_dsi.h @@ -34,8 +34,6 @@ #define DSI_DUAL_LINK_FRONT_BACK 1 #define DSI_DUAL_LINK_PIXEL_ALT 2 -int dsi_pixel_format_bpp(int pixel_format); - struct intel_dsi_host; struct intel_dsi { @@ -64,8 +62,12 @@ struct intel_dsi { /* number of DSI lanes */ unsigned int lane_count; - /* video mode pixel format for MIPI_DSI_FUNC_PRG register */ - u32 pixel_format; + /* + * video mode pixel format + * + * XXX: consolidate on .format in struct mipi_dsi_device. + */ + enum mipi_dsi_pixel_format pixel_format; /* video mode format for MIPI_VIDEO_MODE_FORMAT register */ u32 video_mode_format; diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c index 7f145b4fec6a..8302a972d2d4 100644 --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c @@ -412,6 +412,25 @@ static const struct drm_panel_funcs vbt_panel_funcs = { .get_modes = vbt_panel_get_modes, }; +/* XXX: This should be done when parsing the VBT in intel_bios.c */ +static enum mipi_dsi_pixel_format pixel_format_from_vbt(u32 fmt) +{ + /* It just so happens the VBT matches register contents. */ + switch (fmt) { + case VID_MODE_FORMAT_RGB888: + return MIPI_DSI_FMT_RGB888; + case VID_MODE_FORMAT_RGB666: + return MIPI_DSI_FMT_RGB666; + case VID_MODE_FORMAT_RGB666_PACKED: + return MIPI_DSI_FMT_RGB666_PACKED; + case VID_MODE_FORMAT_RGB565: + return MIPI_DSI_FMT_RGB565; + default: + MISSING_CASE(fmt); + return MIPI_DSI_FMT_RGB666; + } +} + struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id) { struct drm_device *dev = intel_dsi->base.base.dev; @@ -420,7 +439,7 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id) struct mipi_pps_data *pps = dev_priv->vbt.dsi.pps; struct drm_display_mode *mode = dev_priv->vbt.lfp_lvds_vbt_mode; struct vbt_panel *vbt_panel; - u32 bits_per_pixel = 24; + u32 bpp; u32 tlpx_ns, extra_byte_count, bitrate, tlpx_ui; u32 ui_num, ui_den; u32 prepare_cnt, exit_zero_cnt, clk_zero_cnt, trail_cnt; @@ -436,12 +455,11 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id) intel_dsi->eotp_pkt = mipi_config->eot_pkt_disabled ? 0 : 1; intel_dsi->clock_stop = mipi_config->enable_clk_stop ? 1 : 0; intel_dsi->lane_count = mipi_config->lane_cnt + 1; - intel_dsi->pixel_format = mipi_config->videomode_color_format << 7; + intel_dsi->pixel_format = pixel_format_from_vbt(mipi_config->videomode_color_format << 7); + bpp = mipi_dsi_pixel_format_to_bpp(intel_dsi->pixel_format); + intel_dsi->dual_link = mipi_config->dual_link; intel_dsi->pixel_overlap = mipi_config->pixel_overlap; - - bits_per_pixel = dsi_pixel_format_bpp(intel_dsi->pixel_format); - intel_dsi->operation_mode = mipi_config->is_cmd_mode; intel_dsi->video_mode_format = mipi_config->video_transfer_mode; intel_dsi->escape_clk_div = mipi_config->byte_clk_sel; @@ -475,8 +493,7 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id) */ if (intel_dsi->video_mode_format == VIDEO_MODE_BURST) { if (mipi_config->target_burst_mode_freq) { - computed_ddr = - (pclk * bits_per_pixel) / intel_dsi->lane_count; + computed_ddr = (pclk * bpp) / intel_dsi->lane_count; if (mipi_config->target_burst_mode_freq < computed_ddr) { @@ -499,7 +516,7 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id) intel_dsi->burst_mode_ratio = burst_mode_ratio; intel_dsi->pclk = pclk; - bitrate = (pclk * bits_per_pixel) / intel_dsi->lane_count; + bitrate = (pclk * bpp) / intel_dsi->lane_count; switch (intel_dsi->escape_clk_div) { case 0: diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c index 9ef0f7806e4a..e3e343c80221 100644 --- a/drivers/gpu/drm/i915/intel_dsi_pll.c +++ b/drivers/gpu/drm/i915/intel_dsi_pll.c @@ -30,27 +30,6 @@ #include "i915_drv.h" #include "intel_dsi.h" -int dsi_pixel_format_bpp(int pixel_format) -{ - int bpp; - - switch (pixel_format) { - default: - case VID_MODE_FORMAT_RGB888: - case VID_MODE_FORMAT_RGB666: - bpp = 24; - break; - case VID_MODE_FORMAT_RGB666_PACKED: - bpp = 18; - break; - case VID_MODE_FORMAT_RGB565: - bpp = 16; - break; - } - - return bpp; -} - struct dsi_mnp { u32 dsi_pll_ctrl; u32 dsi_pll_div; @@ -64,10 +43,11 @@ static const u32 lfsr_converts[] = { }; /* Get DSI clock from pixel clock */ -static u32 dsi_clk_from_pclk(u32 pclk, int pixel_format, int lane_count) +static u32 dsi_clk_from_pclk(u32 pclk, enum mipi_dsi_pixel_format fmt, + int lane_count) { u32 dsi_clk_khz; - u32 bpp = dsi_pixel_format_bpp(pixel_format); + u32 bpp = mipi_dsi_pixel_format_to_bpp(fmt); /* DSI data rate = pixel clock * bits per pixel / lane count pixel clock is converted from KHz to Hz */ @@ -232,9 +212,9 @@ static void bxt_disable_dsi_pll(struct intel_encoder *encoder) DRM_ERROR("Timeout waiting for PLL lock deassertion\n"); } -static void assert_bpp_mismatch(int pixel_format, int pipe_bpp) +static void assert_bpp_mismatch(enum mipi_dsi_pixel_format fmt, int pipe_bpp) { - int bpp = dsi_pixel_format_bpp(pixel_format); + int bpp = mipi_dsi_pixel_format_to_bpp(fmt); WARN(bpp != pipe_bpp, "bpp match assertion failure (expected %d, current %d)\n",