diff options
Diffstat (limited to 'drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c')
| -rw-r--r-- | drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c | 278 |
1 files changed, 165 insertions, 113 deletions
diff --git a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c index 077f7521a971..5a8e3d6bcbff 100644 --- a/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c +++ b/drivers/gpu/drm/msm/mdp/mdp4/mdp4_kms.c @@ -169,7 +169,14 @@ static long mdp4_round_pixclk(struct msm_kms *kms, unsigned long rate, struct drm_encoder *encoder) { /* if we had >1 encoder, we'd need something more clever: */ - return mdp4_dtv_round_pixclk(encoder, rate); + switch (encoder->encoder_type) { + case DRM_MODE_ENCODER_TMDS: + return mdp4_dtv_round_pixclk(encoder, rate); + case DRM_MODE_ENCODER_LVDS: + case DRM_MODE_ENCODER_DSI: + default: + return rate; + } } static void mdp4_preclose(struct msm_kms *kms, struct drm_file *file) @@ -240,19 +247,18 @@ int mdp4_enable(struct mdp4_kms *mdp4_kms) return 0; } -#ifdef CONFIG_OF -static struct drm_panel *detect_panel(struct drm_device *dev) +static struct device_node *mdp4_detect_lcdc_panel(struct drm_device *dev) { struct device_node *endpoint, *panel_node; struct device_node *np = dev->dev->of_node; - struct drm_panel *panel = NULL; endpoint = of_graph_get_next_endpoint(np, NULL); if (!endpoint) { - dev_err(dev->dev, "no valid endpoint\n"); - return ERR_PTR(-ENODEV); + DBG("no endpoint in MDP4 to fetch LVDS panel\n"); + return NULL; } + /* don't proceed if we have an endpoint but no panel_node tied to it */ panel_node = of_graph_get_remote_port_parent(endpoint); if (!panel_node) { dev_err(dev->dev, "no valid panel node\n"); @@ -262,132 +268,185 @@ static struct drm_panel *detect_panel(struct drm_device *dev) of_node_put(endpoint); - panel = of_drm_find_panel(panel_node); - if (!panel) { - of_node_put(panel_node); - return ERR_PTR(-EPROBE_DEFER); - } - - return panel; + return panel_node; } -#else -static struct drm_panel *detect_panel(struct drm_device *dev) -{ - // ??? maybe use a module param to specify which panel is attached? -} -#endif -static int modeset_init(struct mdp4_kms *mdp4_kms) +static int mdp4_modeset_init_intf(struct mdp4_kms *mdp4_kms, + int intf_type) { struct drm_device *dev = mdp4_kms->dev; struct msm_drm_private *priv = dev->dev_private; - struct drm_plane *plane; - struct drm_crtc *crtc; struct drm_encoder *encoder; struct drm_connector *connector; - struct drm_panel *panel; + struct device_node *panel_node; + struct drm_encoder *dsi_encs[MSM_DSI_ENCODER_NUM]; + int i, dsi_id; int ret; - /* construct non-private planes: */ - plane = mdp4_plane_init(dev, VG1, false); - if (IS_ERR(plane)) { - dev_err(dev->dev, "failed to construct plane for VG1\n"); - ret = PTR_ERR(plane); - goto fail; - } - priv->planes[priv->num_planes++] = plane; + switch (intf_type) { + case DRM_MODE_ENCODER_LVDS: + /* + * bail out early if: + * - there is no panel node (no need to initialize lcdc + * encoder and lvds connector), or + * - panel node is a bad pointer + */ + panel_node = mdp4_detect_lcdc_panel(dev); + if (IS_ERR_OR_NULL(panel_node)) + return PTR_ERR(panel_node); + + encoder = mdp4_lcdc_encoder_init(dev, panel_node); + if (IS_ERR(encoder)) { + dev_err(dev->dev, "failed to construct LCDC encoder\n"); + return PTR_ERR(encoder); + } - plane = mdp4_plane_init(dev, VG2, false); - if (IS_ERR(plane)) { - dev_err(dev->dev, "failed to construct plane for VG2\n"); - ret = PTR_ERR(plane); - goto fail; - } - priv->planes[priv->num_planes++] = plane; + /* LCDC can be hooked to DMA_P (TODO: Add DMA_S later?) */ + encoder->possible_crtcs = 1 << DMA_P; - /* - * Setup the LCDC/LVDS path: RGB2 -> DMA_P -> LCDC -> LVDS: - */ + connector = mdp4_lvds_connector_init(dev, panel_node, encoder); + if (IS_ERR(connector)) { + dev_err(dev->dev, "failed to initialize LVDS connector\n"); + return PTR_ERR(connector); + } - panel = detect_panel(dev); - if (IS_ERR(panel)) { - ret = PTR_ERR(panel); - dev_err(dev->dev, "failed to detect LVDS panel: %d\n", ret); - goto fail; - } + priv->encoders[priv->num_encoders++] = encoder; + priv->connectors[priv->num_connectors++] = connector; - plane = mdp4_plane_init(dev, RGB2, true); - if (IS_ERR(plane)) { - dev_err(dev->dev, "failed to construct plane for RGB2\n"); - ret = PTR_ERR(plane); - goto fail; - } + break; + case DRM_MODE_ENCODER_TMDS: + encoder = mdp4_dtv_encoder_init(dev); + if (IS_ERR(encoder)) { + dev_err(dev->dev, "failed to construct DTV encoder\n"); + return PTR_ERR(encoder); + } - crtc = mdp4_crtc_init(dev, plane, priv->num_crtcs, 0, DMA_P); - if (IS_ERR(crtc)) { - dev_err(dev->dev, "failed to construct crtc for DMA_P\n"); - ret = PTR_ERR(crtc); - goto fail; - } + /* DTV can be hooked to DMA_E: */ + encoder->possible_crtcs = 1 << 1; - encoder = mdp4_lcdc_encoder_init(dev, panel); - if (IS_ERR(encoder)) { - dev_err(dev->dev, "failed to construct LCDC encoder\n"); - ret = PTR_ERR(encoder); - goto fail; - } + if (priv->hdmi) { + /* Construct bridge/connector for HDMI: */ + ret = hdmi_modeset_init(priv->hdmi, dev, encoder); + if (ret) { + dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret); + return ret; + } + } - /* LCDC can be hooked to DMA_P: */ - encoder->possible_crtcs = 1 << priv->num_crtcs; + priv->encoders[priv->num_encoders++] = encoder; - priv->crtcs[priv->num_crtcs++] = crtc; - priv->encoders[priv->num_encoders++] = encoder; + break; + case DRM_MODE_ENCODER_DSI: + /* only DSI1 supported for now */ + dsi_id = 0; - connector = mdp4_lvds_connector_init(dev, panel, encoder); - if (IS_ERR(connector)) { - ret = PTR_ERR(connector); - dev_err(dev->dev, "failed to initialize LVDS connector: %d\n", ret); - goto fail; - } + if (!priv->dsi[dsi_id]) + break; - priv->connectors[priv->num_connectors++] = connector; + for (i = 0; i < MSM_DSI_ENCODER_NUM; i++) { + dsi_encs[i] = mdp4_dsi_encoder_init(dev); + if (IS_ERR(dsi_encs[i])) { + ret = PTR_ERR(dsi_encs[i]); + dev_err(dev->dev, + "failed to construct DSI encoder: %d\n", + ret); + return ret; + } - /* - * Setup DTV/HDMI path: RGB1 -> DMA_E -> DTV -> HDMI: - */ + /* TODO: Add DMA_S later? */ + dsi_encs[i]->possible_crtcs = 1 << DMA_P; + priv->encoders[priv->num_encoders++] = dsi_encs[i]; + } - plane = mdp4_plane_init(dev, RGB1, true); - if (IS_ERR(plane)) { - dev_err(dev->dev, "failed to construct plane for RGB1\n"); - ret = PTR_ERR(plane); - goto fail; - } + ret = msm_dsi_modeset_init(priv->dsi[dsi_id], dev, dsi_encs); + if (ret) { + dev_err(dev->dev, "failed to initialize DSI: %d\n", + ret); + return ret; + } - crtc = mdp4_crtc_init(dev, plane, priv->num_crtcs, 1, DMA_E); - if (IS_ERR(crtc)) { - dev_err(dev->dev, "failed to construct crtc for DMA_E\n"); - ret = PTR_ERR(crtc); - goto fail; + break; + default: + dev_err(dev->dev, "Invalid or unsupported interface\n"); + return -EINVAL; } - encoder = mdp4_dtv_encoder_init(dev); - if (IS_ERR(encoder)) { - dev_err(dev->dev, "failed to construct DTV encoder\n"); - ret = PTR_ERR(encoder); - goto fail; + return 0; +} + +static int modeset_init(struct mdp4_kms *mdp4_kms) +{ + struct drm_device *dev = mdp4_kms->dev; + struct msm_drm_private *priv = dev->dev_private; + struct drm_plane *plane; + struct drm_crtc *crtc; + int i, ret; + static const enum mdp4_pipe rgb_planes[] = { + RGB1, RGB2, + }; + static const enum mdp4_pipe vg_planes[] = { + VG1, VG2, + }; + static const enum mdp4_dma mdp4_crtcs[] = { + DMA_P, DMA_E, + }; + static const char * const mdp4_crtc_names[] = { + "DMA_P", "DMA_E", + }; + static const int mdp4_intfs[] = { + DRM_MODE_ENCODER_LVDS, + DRM_MODE_ENCODER_DSI, + DRM_MODE_ENCODER_TMDS, + }; + + /* construct non-private planes: */ + for (i = 0; i < ARRAY_SIZE(vg_planes); i++) { + plane = mdp4_plane_init(dev, vg_planes[i], false); + if (IS_ERR(plane)) { + dev_err(dev->dev, + "failed to construct plane for VG%d\n", i + 1); + ret = PTR_ERR(plane); + goto fail; + } + priv->planes[priv->num_planes++] = plane; } - /* DTV can be hooked to DMA_E: */ - encoder->possible_crtcs = 1 << priv->num_crtcs; + for (i = 0; i < ARRAY_SIZE(mdp4_crtcs); i++) { + plane = mdp4_plane_init(dev, rgb_planes[i], true); + if (IS_ERR(plane)) { + dev_err(dev->dev, + "failed to construct plane for RGB%d\n", i + 1); + ret = PTR_ERR(plane); + goto fail; + } + + crtc = mdp4_crtc_init(dev, plane, priv->num_crtcs, i, + mdp4_crtcs[i]); + if (IS_ERR(crtc)) { + dev_err(dev->dev, "failed to construct crtc for %s\n", + mdp4_crtc_names[i]); + ret = PTR_ERR(crtc); + goto fail; + } + + priv->crtcs[priv->num_crtcs++] = crtc; + } - priv->crtcs[priv->num_crtcs++] = crtc; - priv->encoders[priv->num_encoders++] = encoder; + /* + * we currently set up two relatively fixed paths: + * + * LCDC/LVDS path: RGB1 -> DMA_P -> LCDC -> LVDS + * or + * DSI path: RGB1 -> DMA_P -> DSI1 -> DSI Panel + * + * DTV/HDMI path: RGB2 -> DMA_E -> DTV -> HDMI + */ - if (priv->hdmi) { - /* Construct bridge/connector for HDMI: */ - ret = hdmi_modeset_init(priv->hdmi, dev, encoder); + for (i = 0; i < ARRAY_SIZE(mdp4_intfs); i++) { + ret = mdp4_modeset_init_intf(mdp4_kms, mdp4_intfs[i]); if (ret) { - dev_err(dev->dev, "failed to initialize HDMI: %d\n", ret); + dev_err(dev->dev, "failed to initialize intf: %d, %d\n", + i, ret); goto fail; } } @@ -558,17 +617,10 @@ fail: static struct mdp4_platform_config *mdp4_get_config(struct platform_device *dev) { static struct mdp4_platform_config config = {}; -#ifdef CONFIG_OF - /* TODO */ + + /* TODO: Chips that aren't apq8064 have a 200 Mhz max_clk */ config.max_clk = 266667000; config.iommu = iommu_domain_alloc(&platform_bus_type); -#else - if (cpu_is_apq8064()) - config.max_clk = 266667000; - else - config.max_clk = 200000000; - - config.iommu = msm_get_iommu_domain(DISPLAY_READ_DOMAIN); -#endif + return &config; } |