| Message ID | 1456476028-36880-10-git-send-email-xinliang.liu@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
On 1 March 2016 at 02:53, Archit Taneja <architt@codeaurora.org> wrote: > > > On 2/26/2016 2:10 PM, Xinliang Liu wrote: >> >> Add support for external HDMI bridge. >> >> v6: None. >> v5: None. >> v4: None. >> v3: >> - Fix a typo: s/exteranl/external. >> v2: >> - Remove abtraction layer. >> > > Reviewed-by: Archit Taneja <architt@codeaurora.org> Thanks :-) Best, -xinliang > > >> Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> >> --- >> drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 52 >> ++++++++++++++++++++++++++++ >> 1 file changed, 52 insertions(+) >> >> diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c >> b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c >> index f15798b61451..c2c406446513 100644 >> --- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c >> +++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c >> @@ -79,6 +79,7 @@ struct dsi_hw_ctx { >> >> struct dw_dsi { >> struct drm_encoder encoder; >> + struct drm_bridge *bridge; >> struct mipi_dsi_host host; >> struct drm_display_mode cur_mode; >> struct dsi_hw_ctx *ctx; >> @@ -688,6 +689,25 @@ static int dsi_host_init(struct device *dev, struct >> dw_dsi *dsi) >> return 0; >> } >> >> +static int dsi_bridge_init(struct drm_device *dev, struct dw_dsi *dsi) >> +{ >> + struct drm_encoder *encoder = &dsi->encoder; >> + struct drm_bridge *bridge = dsi->bridge; >> + int ret; >> + >> + /* associate the bridge to dsi encoder */ >> + encoder->bridge = bridge; >> + bridge->encoder = encoder; >> + >> + ret = drm_bridge_attach(dev, bridge); >> + if (ret) { >> + DRM_ERROR("failed to attach external bridge\n"); >> + return ret; >> + } >> + >> + return 0; >> +} >> + >> static int dsi_bind(struct device *dev, struct device *master, void >> *data) >> { >> struct dsi_data *ddata = dev_get_drvdata(dev); >> @@ -703,6 +723,10 @@ static int dsi_bind(struct device *dev, struct device >> *master, void *data) >> if (ret) >> return ret; >> >> + ret = dsi_bridge_init(drm_dev, dsi); >> + if (ret) >> + return ret; >> + >> return 0; >> } >> >> @@ -719,8 +743,36 @@ static const struct component_ops dsi_ops = { >> static int dsi_parse_dt(struct platform_device *pdev, struct dw_dsi >> *dsi) >> { >> struct dsi_hw_ctx *ctx = dsi->ctx; >> + struct device_node *np = pdev->dev.of_node; >> + struct device_node *endpoint, *bridge_node; >> + struct drm_bridge *bridge; >> struct resource *res; >> >> + /* >> + * Get the endpoint node. In our case, dsi has one output port1 >> + * to which the external HDMI bridge is connected. >> + */ >> + endpoint = of_graph_get_endpoint_by_regs(np, 1, -1); >> + if (!endpoint) { >> + DRM_ERROR("no valid endpoint node\n"); >> + return -ENODEV; >> + } >> + of_node_put(endpoint); >> + >> + bridge_node = of_graph_get_remote_port_parent(endpoint); >> + if (!bridge_node) { >> + DRM_ERROR("no valid bridge node\n"); >> + return -ENODEV; >> + } >> + of_node_put(bridge_node); >> + >> + bridge = of_drm_find_bridge(bridge_node); >> + if (!bridge) { >> + DRM_INFO("wait for external HDMI bridge driver.\n"); >> + return -EPROBE_DEFER; >> + } >> + dsi->bridge = bridge; >> + >> ctx->pclk = devm_clk_get(&pdev->dev, "pclk"); >> if (IS_ERR(ctx->pclk)) { >> DRM_ERROR("failed to get pclk clock\n"); >> > > -- > Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, > a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c index f15798b61451..c2c406446513 100644 --- a/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c +++ b/drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c @@ -79,6 +79,7 @@ struct dsi_hw_ctx { struct dw_dsi { struct drm_encoder encoder; + struct drm_bridge *bridge; struct mipi_dsi_host host; struct drm_display_mode cur_mode; struct dsi_hw_ctx *ctx; @@ -688,6 +689,25 @@ static int dsi_host_init(struct device *dev, struct dw_dsi *dsi) return 0; } +static int dsi_bridge_init(struct drm_device *dev, struct dw_dsi *dsi) +{ + struct drm_encoder *encoder = &dsi->encoder; + struct drm_bridge *bridge = dsi->bridge; + int ret; + + /* associate the bridge to dsi encoder */ + encoder->bridge = bridge; + bridge->encoder = encoder; + + ret = drm_bridge_attach(dev, bridge); + if (ret) { + DRM_ERROR("failed to attach external bridge\n"); + return ret; + } + + return 0; +} + static int dsi_bind(struct device *dev, struct device *master, void *data) { struct dsi_data *ddata = dev_get_drvdata(dev); @@ -703,6 +723,10 @@ static int dsi_bind(struct device *dev, struct device *master, void *data) if (ret) return ret; + ret = dsi_bridge_init(drm_dev, dsi); + if (ret) + return ret; + return 0; } @@ -719,8 +743,36 @@ static const struct component_ops dsi_ops = { static int dsi_parse_dt(struct platform_device *pdev, struct dw_dsi *dsi) { struct dsi_hw_ctx *ctx = dsi->ctx; + struct device_node *np = pdev->dev.of_node; + struct device_node *endpoint, *bridge_node; + struct drm_bridge *bridge; struct resource *res; + /* + * Get the endpoint node. In our case, dsi has one output port1 + * to which the external HDMI bridge is connected. + */ + endpoint = of_graph_get_endpoint_by_regs(np, 1, -1); + if (!endpoint) { + DRM_ERROR("no valid endpoint node\n"); + return -ENODEV; + } + of_node_put(endpoint); + + bridge_node = of_graph_get_remote_port_parent(endpoint); + if (!bridge_node) { + DRM_ERROR("no valid bridge node\n"); + return -ENODEV; + } + of_node_put(bridge_node); + + bridge = of_drm_find_bridge(bridge_node); + if (!bridge) { + DRM_INFO("wait for external HDMI bridge driver.\n"); + return -EPROBE_DEFER; + } + dsi->bridge = bridge; + ctx->pclk = devm_clk_get(&pdev->dev, "pclk"); if (IS_ERR(ctx->pclk)) { DRM_ERROR("failed to get pclk clock\n");
Add support for external HDMI bridge. v6: None. v5: None. v4: None. v3: - Fix a typo: s/exteranl/external. v2: - Remove abtraction layer. Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org> --- drivers/gpu/drm/hisilicon/kirin/dw_drm_dsi.c | 52 ++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) -- 2.7.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html