<html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hi Krzysztof, <div class="moz-cite-prefix">On 09/30/2015 01:32 PM, Krzysztof Kozlowski wrote: </div> <blockquote cite="mid:560B73D4.30109@samsung.com" type="cite"> <pre wrap="">On 22.09.2015 16:37, Yakir Yang wrote: </pre> <blockquote type="cite"> <pre wrap="">Both hsync/vsync polarity and interlace mode can be parsed from drm display mode, and dynamic_range and ycbcr_coeff can be judge by the video code. But presumably Exynos still relies on the DT properties, so take good use of mode_fixup() in to achieve the compatibility hacks. Signed-off-by: Yakir Yang <a class="moz-txt-link-rfc2396E" href="mailto:ykk@rock-chips.com"><ykk@rock-chips.com></a> --- Changes in v5: - Switch video timing type to "u32", so driver could use "of_property_read_u32" to get the backword timing values. </pre> </blockquote> <pre wrap=""> Okay </pre> <blockquote type="cite"> <pre wrap="">Krzysztof suggest me that driver could use the "of_property_read_bool" to get backword timing values, but that interfacs would modify the original drm_display_mode timing directly (whether those properties exists or not). </pre> </blockquote> <pre wrap=""> Hmm, I don't understand. You have a: struct video_info { bool h_sync_polarity; bool v_sync_polarity; bool interlaced; }; so what is wrong with: dp_video_config->h_sync_polarity = of_property_read_bool(dp_node, "hsync-active-high"); Is it exactly the same binding as previously? </pre> </blockquote> Yes, it is the same binding as previously. But just a note that we already mark those DT binding as deprecated. <pre wrap="">+-interlaced: deprecated prop that can parsed frm drm_display_mode. +-vsync-active-high: deprecated prop that can parsed frm drm_display_mode. +-hsync-active-high: deprecated prop that can parsed frm drm_display_mode.</pre> For now those values should come from "struct drm_display_mode", and we already parsed them out from "drm_display_mode" before driver provide the backward compatibility. Let's used the "hsync-active-high" example: As for now the code would like: static void analogix_dp_bridge_mode_set(...) { // Parsed timing value from "drm_display_mode" video->h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC); // Try to detect the deprecated property, providing // the backward compatibility of_property_read_u32(dp_node, "hsync-active-high", &video->h_sync_polarity); /* * In this case, if "hsync-active-high" property haven't been * found, then the video timing "h_sync_polarity" would keep * no change, keeping the parsed value from "drm_display_mode" */ } But if keep the "of_property_read_bool", then code would like: static void analogix_dp_bridge_mode_set(...) { // Parsed timing value from "drm_display_mode" video->h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC); // Try to detect the deprecated property, providing // the backward compatibility video->h_sync_polarity = of_property_read_bool(dp_node, "hsync-active-high"); /* * In this case, if "hsync-active-high" property haven't been * found, then the video timing "h_sync_polarity" would just * modify to "false". That is the place we don't want, cause * it would always modify the timing value parsed from * "drm_display_mode" */ } Thanks, - Yakir <blockquote cite="mid:560B73D4.30109@samsung.com" type="cite"> <pre wrap=""> Best regards, Krzysztof </pre> <blockquote type="cite"> <pre wrap=""> Changes in v4: - Provide backword compatibility with samsung. (Krzysztof) Changes in v3: - Dynamic parse video timing info from struct drm_display_mode and struct drm_display_info. (Thierry) Changes in v2: None drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 144 +++++++++++++-------- drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 8 +- drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c | 14 +- 3 files changed, 104 insertions(+), 62 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 1e3c8d3..6be139b 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -890,8 +890,8 @@ static void analogix_dp_commit(struct analogix_dp_device *dp) return; } - ret = analogix_dp_set_link_train(dp, dp->video_info->lane_count, - dp->video_info->link_rate); + ret = analogix_dp_set_link_train(dp, dp->video_info.lane_count, + dp->video_info.link_rate); if (ret) { dev_err(dp->dev, "unable to do link train\n"); return; @@ -1030,6 +1030,85 @@ static void analogix_dp_bridge_disable(struct drm_bridge *bridge) dp->dpms_mode = DRM_MODE_DPMS_OFF; } +static void analogix_dp_bridge_mode_set(struct drm_bridge *bridge, + struct drm_display_mode *orig_mode, + struct drm_display_mode *mode) +{ + struct analogix_dp_device *dp = bridge->driver_private; + struct drm_display_info *display_info = &dp->connector->display_info; + struct video_info *video = &dp->video_info; + struct device_node *dp_node = dp->dev->of_node; + int vic; + + /* Input video interlaces & hsync pol & vsync pol */ + video->interlaced = !!(mode->flags & DRM_MODE_FLAG_INTERLACE); + video->v_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NVSYNC); + video->h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC); + + /* Input video dynamic_range & colorimetry */ + vic = drm_match_cea_mode(mode); + if ((vic == 6) || (vic == 7) || (vic == 21) || (vic == 22) || + (vic == 2) || (vic == 3) || (vic == 17) || (vic == 18)) { + video->dynamic_range = CEA; + video->ycbcr_coeff = COLOR_YCBCR601; + } else if (vic) { + video->dynamic_range = CEA; + video->ycbcr_coeff = COLOR_YCBCR709; + } else { + video->dynamic_range = VESA; + video->ycbcr_coeff = COLOR_YCBCR709; + } + + /* Input vide bpc and color_formats */ + switch (display_info->bpc) { + case 12: + video->color_depth = COLOR_12; + break; + case 10: + video->color_depth = COLOR_10; + break; + case 8: + video->color_depth = COLOR_8; + break; + case 6: + video->color_depth = COLOR_6; + break; + default: + video->color_depth = COLOR_8; + break; + } + if (display_info->color_formats & DRM_COLOR_FORMAT_YCRCB444) + video->color_space = COLOR_YCBCR444; + else if (display_info->color_formats & DRM_COLOR_FORMAT_YCRCB422) + video->color_space = COLOR_YCBCR422; + else if (display_info->color_formats & DRM_COLOR_FORMAT_RGB444) + video->color_space = COLOR_RGB; + else + video->color_space = COLOR_RGB; + + /* + * NOTE: those property parsing code is used for providing backward + * compatibility for samsung platform. + * Due to we used the "of_property_read_u32" interfaces, when this + * property isn't present, the "video_info" can keep the original + * values and wouldn't be modified. + */ + of_property_read_u32(dp_node, "samsung,color-space", + &video->color_space); + of_property_read_u32(dp_node, "samsung,dynamic-range", + &video->dynamic_range); + of_property_read_u32(dp_node, "samsung,ycbcr-coeff", + &video->ycbcr_coeff); + of_property_read_u32(dp_node, "samsung,color-depth", + &video->color_depth); + of_property_read_u32(dp_node, "hsync-active-high", + &video->h_sync_polarity); + of_property_read_u32(dp_node, "vsync-active-high", + &video->v_sync_polarity); + of_property_read_u32(dp_node, "interlaced", + &video->interlaced); +} + static void analogix_dp_bridge_nop(struct drm_bridge *bridge) { /* do nothing */ @@ -1040,6 +1119,7 @@ static const struct drm_bridge_funcs analogix_dp_bridge_funcs = { .disable = analogix_dp_bridge_disable, .pre_enable = analogix_dp_bridge_nop, .post_disable = analogix_dp_bridge_nop, + .mode_set = analogix_dp_bridge_mode_set, .attach = analogix_dp_bridge_attach, }; @@ -1070,62 +1150,24 @@ static int analogix_dp_create_bridge(struct drm_device *drm_dev, return 0; } -static struct video_info *analogix_dp_dt_parse_pdata(struct device *dev) +static int analogix_dp_dt_parse_pdata(struct analogix_dp_device *dp) { - struct device_node *dp_node = dev->of_node; - struct video_info *dp_video_config; - - dp_video_config = devm_kzalloc(dev, sizeof(*dp_video_config), - GFP_KERNEL); - if (!dp_video_config) - return ERR_PTR(-ENOMEM); - - dp_video_config->h_sync_polarity = - of_property_read_bool(dp_node, "hsync-active-high"); - - dp_video_config->v_sync_polarity = - of_property_read_bool(dp_node, "vsync-active-high"); - - dp_video_config->interlaced = - of_property_read_bool(dp_node, "interlaced"); - - if (of_property_read_u32(dp_node, "samsung,color-space", - &dp_video_config->color_space)) { - dev_err(dev, "failed to get color-space\n"); - return ERR_PTR(-EINVAL); - } - - if (of_property_read_u32(dp_node, "samsung,dynamic-range", - &dp_video_config->dynamic_range)) { - dev_err(dev, "failed to get dynamic-range\n"); - return ERR_PTR(-EINVAL); - } - - if (of_property_read_u32(dp_node, "samsung,ycbcr-coeff", - &dp_video_config->ycbcr_coeff)) { - dev_err(dev, "failed to get ycbcr-coeff\n"); - return ERR_PTR(-EINVAL); - } - - if (of_property_read_u32(dp_node, "samsung,color-depth", - &dp_video_config->color_depth)) { - dev_err(dev, "failed to get color-depth\n"); - return ERR_PTR(-EINVAL); - } + struct device_node *dp_node = dp->dev->of_node; + struct video_info *video_info = &dp->video_info if (of_property_read_u32(dp_node, "samsung,link-rate", - &dp_video_config->link_rate)) { + &video_info->link_rate)) { dev_err(dev, "failed to get link-rate\n"); - return ERR_PTR(-EINVAL); + return -EINVAL; } if (of_property_read_u32(dp_node, "samsung,lane-count", - &dp_video_config->lane_count)) { + &video_info->lane_count)) { dev_err(dev, "failed to get lane-count\n"); - return ERR_PTR(-EINVAL); + return -EINVAL; } - return dp_video_config; + return 0; } int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, @@ -1158,9 +1200,9 @@ int analogix_dp_bind(struct device *dev, struct drm_device *drm_dev, */ dp->plat_data = plat_data; - dp->video_info = analogix_dp_dt_parse_pdata(&pdev->dev); - if (IS_ERR(dp->video_info)) - return PTR_ERR(dp->video_info); + ret = analogix_dp_dt_parse_pdata(dp); + if (ret) + return ret; dp->phy = devm_phy_get(dp->dev, "dp"); if (IS_ERR(dp->phy)) { diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h index 9a90a18..730486d 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h @@ -120,9 +120,9 @@ enum dp_irq_type { struct video_info { char *name; - bool h_sync_polarity; - bool v_sync_polarity; - bool interlaced; + u32 h_sync_polarity; + u32 v_sync_polarity; + u32 interlaced; enum color_space color_space; enum dynamic_range dynamic_range; @@ -154,7 +154,7 @@ struct analogix_dp_device { unsigned int irq; void __iomem *reg_base; - struct video_info *video_info; + struct video_info video_info; struct link_train link_train; struct work_struct hotplug_work; struct phy *phy; diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c index a388c0a..861097a 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c @@ -1084,15 +1084,15 @@ void analogix_dp_set_video_color_format(struct analogix_dp_device *dp) u32 reg; /* Configure the input color depth, color space, dynamic range */ - reg = (dp->video_info->dynamic_range << IN_D_RANGE_SHIFT) | - (dp->video_info->color_depth << IN_BPC_SHIFT) | - (dp->video_info->color_space << IN_COLOR_F_SHIFT); + reg = (dp->video_info.dynamic_range << IN_D_RANGE_SHIFT) | + (dp->video_info.color_depth << IN_BPC_SHIFT) | + (dp->video_info.color_space << IN_COLOR_F_SHIFT); writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_2); /* Set Input Color YCbCr Coefficients to ITU601 or ITU709 */ reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_3); reg &= ~IN_YC_COEFFI_MASK; - if (dp->video_info->ycbcr_coeff) + if (dp->video_info.ycbcr_coeff) reg |= IN_YC_COEFFI_ITU709; else reg |= IN_YC_COEFFI_ITU601; @@ -1229,17 +1229,17 @@ void analogix_dp_config_video_slave_mode(struct analogix_dp_device *dp) reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); reg &= ~INTERACE_SCAN_CFG; - reg |= (dp->video_info->interlaced << 2); + reg |= (dp->video_info.interlaced << 2); writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); reg &= ~VSYNC_POLARITY_CFG; - reg |= (dp->video_info->v_sync_polarity << 1); + reg |= (dp->video_info.v_sync_polarity << 1); writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); reg = readl(dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); reg &= ~HSYNC_POLARITY_CFG; - reg |= (dp->video_info->h_sync_polarity << 0); + reg |= (dp->video_info.h_sync_polarity << 0); writel(reg, dp->reg_base + ANALOGIX_DP_VIDEO_CTL_10); reg = AUDIO_MODE_SPDIF_MODE | VIDEO_MODE_SLAVE_MODE; </pre> </blockquote> <pre wrap=""> </pre> </blockquote> </body> </html>