drm/exynos: consider deferred probe case

This patch makes sure that exynos drm framework handles deferred
probe case correctly.

Sub drivers could be probed before resources, clock, regulator,
phy or panel, are ready for them so we should make sure that exynos
drm core waits until all resources are ready and sub drivers are
probed correctly.

Chagelog v2:
- Make sure that exynos drm core tries to bind sub drivers only in case that
  they have a pair: crtc and encoder/connector components should be a pair.
- Remove unnecessary patch:
  drm/exynos: mipi-dsi: consider panel driver-deferred probe
- Return error type correctly.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>

diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index 8b67f4141e7828539f48978e1ae4e9efea4cc6e8..5e05dbc60082f193a465c79d27e05548aada85bd 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -1325,12 +1325,26 @@ static const struct component_ops exynos_dp_ops = {
 
 static int exynos_dp_probe(struct platform_device *pdev)
 {
-       return exynos_drm_component_add(&pdev->dev, &exynos_dp_ops);
+       int ret;
+
+       ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
+                                       exynos_dp_display.type);
+       if (ret)
+               return ret;
+
+       ret = component_add(&pdev->dev, &exynos_dp_ops);
+       if (ret)
+               exynos_drm_component_del(&pdev->dev,
+                                               EXYNOS_DEVICE_TYPE_CONNECTOR);
+
+       return ret;
 }
 
 static int exynos_dp_remove(struct platform_device *pdev)
 {
-       exynos_drm_component_del(&pdev->dev, &exynos_dp_ops);
+       component_del(&pdev->dev, &exynos_dp_ops);
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR);
+
        return 0;
 }
 

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
index a832364358a726cb394eea552e2f7b8de5ad53d7..f1b8587cc63df8dd4661c57e197a750d460ffe40 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_dpi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dpi.c
@@ -295,9 +295,15 @@ struct exynos_drm_display *exynos_dpi_probe(struct device *dev)
        struct exynos_dpi *ctx;
        int ret;
 
+       ret = exynos_drm_component_add(dev,
+                                       EXYNOS_DEVICE_TYPE_CONNECTOR,
+                                       exynos_dpi_display.type);
+       if (ret)
+               return ERR_PTR(ret);
+
        ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
        if (!ctx)
-               return NULL;
+               goto err_del_component;
 
        ctx->dev = dev;
        exynos_dpi_display.ctx = ctx;
@@ -306,16 +312,24 @@ struct exynos_drm_display *exynos_dpi_probe(struct device *dev)
        ret = exynos_dpi_parse_dt(ctx);
        if (ret < 0) {
                devm_kfree(dev, ctx);
-               return NULL;
+               goto err_del_component;
        }
 
        if (ctx->panel_node) {
                ctx->panel = of_drm_find_panel(ctx->panel_node);
-               if (!ctx->panel)
+               if (!ctx->panel) {
+                       exynos_drm_component_del(dev,
+                                               EXYNOS_DEVICE_TYPE_CONNECTOR);
                        return ERR_PTR(-EPROBE_DEFER);
+               }
        }
 
        return &exynos_dpi_display;
+
+err_del_component:
+       exynos_drm_component_del(dev, EXYNOS_DEVICE_TYPE_CONNECTOR);
+
+       return NULL;
 }
 
 int exynos_dpi_remove(struct device *dev)
@@ -327,5 +341,7 @@ int exynos_dpi_remove(struct device *dev)
        encoder->funcs->destroy(encoder);
        drm_connector_cleanup(&ctx->connector);
 
+       exynos_drm_component_del(dev, EXYNOS_DEVICE_TYPE_CONNECTOR);
+
        return 0;
 }

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index c5a401ae4de5934b16a31f49437e5cca92c97b5e..5d225dd58a872aed1af19fac8ee56041c4514ac5 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -48,7 +48,10 @@ static LIST_HEAD(drm_component_list);
 
 struct component_dev {
        struct list_head list;
-       struct device *dev;
+       struct device *crtc_dev;
+       struct device *conn_dev;
+       enum exynos_drm_output_type out_type;
+       unsigned int dev_type_flag;
 };
 
 static int exynos_drm_load(struct drm_device *dev, unsigned long flags)
@@ -382,22 +385,65 @@ static const struct dev_pm_ops exynos_drm_pm_ops = {
 };
 
 int exynos_drm_component_add(struct device *dev,
-                               const struct component_ops *ops)
+                               enum exynos_drm_device_type dev_type,
+                               enum exynos_drm_output_type out_type)
 {
        struct component_dev *cdev;
-       int ret;
+
+       if (dev_type != EXYNOS_DEVICE_TYPE_CRTC &&
+                       dev_type != EXYNOS_DEVICE_TYPE_CONNECTOR) {
+               DRM_ERROR("invalid device type.\n");
+               return -EINVAL;
+       }
+
+       mutex_lock(&drm_component_lock);
+
+       /*
+        * Make sure to check if there is a component which has two device
+        * objects, for connector and for encoder/connector.
+        * It should make sure that crtc and encoder/connector drivers are
+        * ready before exynos drm core binds them.
+        */
+       list_for_each_entry(cdev, &drm_component_list, list) {
+               if (cdev->out_type == out_type) {
+                       /*
+                        * If crtc and encoder/connector device objects are
+                        * added already just return.
+                        */
+                       if (cdev->dev_type_flag == (EXYNOS_DEVICE_TYPE_CRTC |
+                                               EXYNOS_DEVICE_TYPE_CONNECTOR)) {
+                               mutex_unlock(&drm_component_lock);
+                               return 0;
+                       }
+
+                       if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
+                               cdev->crtc_dev = dev;
+                               cdev->dev_type_flag |= dev_type;
+                       }
+
+                       if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
+                               cdev->conn_dev = dev;
+                               cdev->dev_type_flag |= dev_type;
+                       }
+
+                       mutex_unlock(&drm_component_lock);
+                       return 0;
+               }
+       }
+
+       mutex_unlock(&drm_component_lock);
 
        cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
        if (!cdev)
                return -ENOMEM;
 
-       ret = component_add(dev, ops);
-       if (ret) {
-               kfree(cdev);
-               return ret;
-       }
+       if (dev_type == EXYNOS_DEVICE_TYPE_CRTC)
+               cdev->crtc_dev = dev;
+       if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR)
+               cdev->conn_dev = dev;
 
-       cdev->dev = dev;
+       cdev->out_type = out_type;
+       cdev->dev_type_flag = dev_type;
 
        mutex_lock(&drm_component_lock);
        list_add_tail(&cdev->list, &drm_component_list);
@@ -407,23 +453,40 @@ int exynos_drm_component_add(struct device *dev,
 }
 
 void exynos_drm_component_del(struct device *dev,
-                               const struct component_ops *ops)
+                               enum exynos_drm_device_type dev_type)
 {
        struct component_dev *cdev, *next;
 
        mutex_lock(&drm_component_lock);
 
        list_for_each_entry_safe(cdev, next, &drm_component_list, list) {
-               if (dev == cdev->dev) {
+               if (dev_type == EXYNOS_DEVICE_TYPE_CRTC) {
+                       if (cdev->crtc_dev == dev) {
+                               cdev->crtc_dev = NULL;
+                               cdev->dev_type_flag &= ~dev_type;
+                       }
+               }
+
+               if (dev_type == EXYNOS_DEVICE_TYPE_CONNECTOR) {
+                       if (cdev->conn_dev == dev) {
+                               cdev->conn_dev = NULL;
+                               cdev->dev_type_flag &= ~dev_type;
+                       }
+               }
+
+               /*
+                * Release cdev object only in case that both of crtc and
+                * encoder/connector device objects are NULL.
+                */
+               if (!cdev->crtc_dev && !cdev->conn_dev) {
                        list_del(&cdev->list);
                        kfree(cdev);
-                       break;
                }
+
+               break;
        }
 
        mutex_unlock(&drm_component_lock);
-
-       component_del(dev, ops);
 }
 
 static int compare_of(struct device *dev, void *data)
@@ -433,29 +496,60 @@ static int compare_of(struct device *dev, void *data)
 
 static int exynos_drm_add_components(struct device *dev, struct master *m)
 {
-       unsigned int attached_cnt = 0;
        struct component_dev *cdev;
+       unsigned int attach_cnt = 0;
 
        mutex_lock(&drm_component_lock);
 
        list_for_each_entry(cdev, &drm_component_list, list) {
                int ret;
 
+               /*
+                * Add components to master only in case that crtc and
+                * encoder/connector device objects exist.
+                */
+               if (!cdev->crtc_dev || !cdev->conn_dev)
+                       continue;
+
+               attach_cnt++;
+
                mutex_unlock(&drm_component_lock);
 
-               ret = component_master_add_child(m, compare_of, cdev->dev);
-               if (!ret)
-                       attached_cnt++;
+               /*
+                * fimd and dpi modules have same device object so add
+                * only crtc device object in this case.
+                *
+                * TODO. if dpi module follows driver-model driver then
+                * below codes can be removed.
+                */
+               if (cdev->crtc_dev == cdev->conn_dev) {
+                       ret = component_master_add_child(m, compare_of,
+                                       cdev->crtc_dev);
+                       if (ret < 0)
+                               return ret;
+
+                       goto out_lock;
+               }
 
+               /*
+                * Do not chage below call order.
+                * crtc device first should be added to master because
+                * connector/encoder need pipe number of crtc when they
+                * are created.
+                */
+               ret = component_master_add_child(m, compare_of, cdev->crtc_dev);
+               ret |= component_master_add_child(m, compare_of,
+                                                       cdev->conn_dev);
+               if (ret < 0)
+                       return ret;
+
+out_lock:
                mutex_lock(&drm_component_lock);
        }
 
        mutex_unlock(&drm_component_lock);
 
-       if (!attached_cnt)
-               return -ENXIO;
-
-       return 0;
+       return attach_cnt ? 0 : -ENODEV;
 }
 
 static int exynos_drm_bind(struct device *dev)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
index e82e620c2e52c4f143a9155c1d3a16cec9098963..36535f398848480e58562f2432b7ab7c815b8a65 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
@@ -42,6 +42,13 @@ struct drm_connector;
 
 extern unsigned int drm_vblank_offdelay;
 
+/* This enumerates device type. */
+enum exynos_drm_device_type {
+       EXYNOS_DEVICE_TYPE_NONE,
+       EXYNOS_DEVICE_TYPE_CRTC,
+       EXYNOS_DEVICE_TYPE_CONNECTOR,
+};
+
 /* this enumerates display type. */
 enum exynos_drm_output_type {
        EXYNOS_DISPLAY_TYPE_NONE,
@@ -354,12 +361,12 @@ void exynos_drm_remove_vidi(void);
 int exynos_drm_create_enc_conn(struct drm_device *dev,
                                struct exynos_drm_display *display);
 
-struct component_ops;
 int exynos_drm_component_add(struct device *dev,
-                               const struct component_ops *ops);
+                               enum exynos_drm_device_type dev_type,
+                               enum exynos_drm_output_type out_type);
 
 void exynos_drm_component_del(struct device *dev,
-                               const struct component_ops *ops);
+                               enum exynos_drm_device_type dev_type);
 
 extern struct platform_driver fimd_driver;
 extern struct platform_driver dp_driver;

diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
index 84661feda60f5f80196e3f3f92030323806bb7d7..6302aa64f6c1e328bb315a8ccd70e07e3489d17a 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
@@ -1423,10 +1423,16 @@ static int exynos_dsi_probe(struct platform_device *pdev)
        struct exynos_dsi *dsi;
        int ret;
 
+       ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
+                                       exynos_dsi_display.type);
+       if (ret)
+               return ret;
+
        dsi = devm_kzalloc(&pdev->dev, sizeof(*dsi), GFP_KERNEL);
        if (!dsi) {
                dev_err(&pdev->dev, "failed to allocate dsi object.\n");
-               return -ENOMEM;
+               ret = -ENOMEM;
+               goto err_del_component;
        }
 
        init_completion(&dsi->completed);
@@ -1440,7 +1446,7 @@ static int exynos_dsi_probe(struct platform_device *pdev)
 
        ret = exynos_dsi_parse_dt(dsi);
        if (ret)
-               return ret;
+               goto err_del_component;
 
        dsi->supplies[0].supply = "vddcore";
        dsi->supplies[1].supply = "vddio";
@@ -1454,32 +1460,37 @@ static int exynos_dsi_probe(struct platform_device *pdev)
        dsi->pll_clk = devm_clk_get(&pdev->dev, "pll_clk");
        if (IS_ERR(dsi->pll_clk)) {
                dev_info(&pdev->dev, "failed to get dsi pll input clock\n");
-               return -EPROBE_DEFER;
+               ret = PTR_ERR(dsi->pll_clk);
+               goto err_del_component;
        }
 
        dsi->bus_clk = devm_clk_get(&pdev->dev, "bus_clk");
        if (IS_ERR(dsi->bus_clk)) {
                dev_info(&pdev->dev, "failed to get dsi bus clock\n");
-               return -EPROBE_DEFER;
+               ret = PTR_ERR(dsi->bus_clk);
+               goto err_del_component;
        }
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        dsi->reg_base = devm_ioremap_resource(&pdev->dev, res);
        if (IS_ERR(dsi->reg_base)) {
                dev_err(&pdev->dev, "failed to remap io region\n");
-               return PTR_ERR(dsi->reg_base);
+               ret = PTR_ERR(dsi->reg_base);
+               goto err_del_component;
        }
 
        dsi->phy = devm_phy_get(&pdev->dev, "dsim");
        if (IS_ERR(dsi->phy)) {
                dev_info(&pdev->dev, "failed to get dsim phy\n");
-               return -EPROBE_DEFER;
+               ret = PTR_ERR(dsi->phy);
+               goto err_del_component;
        }
 
        dsi->irq = platform_get_irq(pdev, 0);
        if (dsi->irq < 0) {
                dev_err(&pdev->dev, "failed to request dsi irq resource\n");
-               return dsi->irq;
+               ret = dsi->irq;
+               goto err_del_component;
        }
 
        irq_set_status_flags(dsi->irq, IRQ_NOAUTOEN);
@@ -1488,19 +1499,29 @@ static int exynos_dsi_probe(struct platform_device *pdev)
                                        dev_name(&pdev->dev), dsi);
        if (ret) {
                dev_err(&pdev->dev, "failed to request dsi irq\n");
-               return ret;
+               goto err_del_component;
        }
 
        exynos_dsi_display.ctx = dsi;
 
        platform_set_drvdata(pdev, &exynos_dsi_display);
 
-       return exynos_drm_component_add(&pdev->dev, &exynos_dsi_component_ops);
+       ret = component_add(&pdev->dev, &exynos_dsi_component_ops);
+       if (ret)
+               goto err_del_component;
+
+       return ret;
+
+err_del_component:
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR);
+       return ret;
 }
 
 static int exynos_dsi_remove(struct platform_device *pdev)
 {
-       exynos_drm_component_del(&pdev->dev, &exynos_dsi_component_ops);
+       component_del(&pdev->dev, &exynos_dsi_component_ops);
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR);
+
        return 0;
 }
 

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
index 2ec634f7930a7b2f09cd7a7a8587ba4744bbfc1a..bb45ab2e7384efaab5eefcf13bcde9724d41b0f8 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c
@@ -924,12 +924,21 @@ static int fimd_probe(struct platform_device *pdev)
        struct resource *res;
        int ret = -EINVAL;
 
-       if (!dev->of_node)
-               return -ENODEV;
+       ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC,
+                                       fimd_manager.type);
+       if (ret)
+               return ret;
+
+       if (!dev->of_node) {
+               ret = -ENODEV;
+               goto err_del_component;
+       }
 
        ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-       if (!ctx)
-               return -ENOMEM;
+       if (!ctx) {
+               ret = -ENOMEM;
+               goto err_del_component;
+       }
 
        ctx->dev = dev;
        ctx->suspended = true;
@@ -942,32 +951,37 @@ static int fimd_probe(struct platform_device *pdev)
        ctx->bus_clk = devm_clk_get(dev, "fimd");
        if (IS_ERR(ctx->bus_clk)) {
                dev_err(dev, "failed to get bus clock\n");
-               return PTR_ERR(ctx->bus_clk);
+               ret = PTR_ERR(ctx->bus_clk);
+               goto err_del_component;
        }
 
        ctx->lcd_clk = devm_clk_get(dev, "sclk_fimd");
        if (IS_ERR(ctx->lcd_clk)) {
                dev_err(dev, "failed to get lcd clock\n");
-               return PTR_ERR(ctx->lcd_clk);
+               ret = PTR_ERR(ctx->lcd_clk);
+               goto err_del_component;
        }
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 
        ctx->regs = devm_ioremap_resource(dev, res);
-       if (IS_ERR(ctx->regs))
-               return PTR_ERR(ctx->regs);
+       if (IS_ERR(ctx->regs)) {
+               ret = PTR_ERR(ctx->regs);
+               goto err_del_component;
+       }
 
        res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "vsync");
        if (!res) {
                dev_err(dev, "irq request failed.\n");
-               return -ENXIO;
+               ret = -ENXIO;
+               goto err_del_component;
        }
 
        ret = devm_request_irq(dev, res->start, fimd_irq_handler,
                                                        0, "drm_fimd", ctx);
        if (ret) {
                dev_err(dev, "irq request failed.\n");
-               return ret;
+               goto err_del_component;
        }
 
        ctx->driver_data = drm_fimd_get_driver_data(pdev);
@@ -984,14 +998,27 @@ static int fimd_probe(struct platform_device *pdev)
 
        pm_runtime_enable(&pdev->dev);
 
-       return exynos_drm_component_add(&pdev->dev, &fimd_component_ops);
+       ret = component_add(&pdev->dev, &fimd_component_ops);
+       if (ret)
+               goto err_disable_pm_runtime;
+
+       return ret;
+
+err_disable_pm_runtime:
+       pm_runtime_disable(&pdev->dev);
+
+err_del_component:
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
+       return ret;
 }
 
 static int fimd_remove(struct platform_device *pdev)
 {
        pm_runtime_disable(&pdev->dev);
 
-       exynos_drm_component_del(&pdev->dev, &fimd_component_ops);
+       component_del(&pdev->dev, &fimd_component_ops);
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
+
        return 0;
 }
 

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index d0f4f5d5a9f9320d87f4ecc13dc9882015b34359..c104d0c9b385a3860a4a21b8989bb8aede5abcbd 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -2162,26 +2162,31 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
        res->hdmi = devm_clk_get(dev, "hdmi");
        if (IS_ERR(res->hdmi)) {
                DRM_ERROR("failed to get clock 'hdmi'\n");
+               ret = PTR_ERR(res->hdmi);
                goto fail;
        }
        res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
        if (IS_ERR(res->sclk_hdmi)) {
                DRM_ERROR("failed to get clock 'sclk_hdmi'\n");
+               ret = PTR_ERR(res->sclk_hdmi);
                goto fail;
        }
        res->sclk_pixel = devm_clk_get(dev, "sclk_pixel");
        if (IS_ERR(res->sclk_pixel)) {
                DRM_ERROR("failed to get clock 'sclk_pixel'\n");
+               ret = PTR_ERR(res->sclk_pixel);
                goto fail;
        }
        res->sclk_hdmiphy = devm_clk_get(dev, "sclk_hdmiphy");
        if (IS_ERR(res->sclk_hdmiphy)) {
                DRM_ERROR("failed to get clock 'sclk_hdmiphy'\n");
+               ret = PTR_ERR(res->sclk_hdmiphy);
                goto fail;
        }
        res->mout_hdmi = devm_clk_get(dev, "mout_hdmi");
        if (IS_ERR(res->mout_hdmi)) {
                DRM_ERROR("failed to get clock 'mout_hdmi'\n");
+               ret = PTR_ERR(res->mout_hdmi);
                goto fail;
        }
 
@@ -2189,8 +2194,10 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
 
        res->regul_bulk = devm_kzalloc(dev, ARRAY_SIZE(supply) *
                sizeof(res->regul_bulk[0]), GFP_KERNEL);
-       if (!res->regul_bulk)
+       if (!res->regul_bulk) {
+               ret = -ENOMEM;
                goto fail;
+       }
        for (i = 0; i < ARRAY_SIZE(supply); ++i) {
                res->regul_bulk[i].supply = supply[i];
                res->regul_bulk[i].consumer = NULL;
@@ -2198,14 +2205,14 @@ static int hdmi_resources_init(struct hdmi_context *hdata)
        ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(supply), res->regul_bulk);
        if (ret) {
                DRM_ERROR("failed to get regulators\n");
-               goto fail;
+               return ret;
        }
        res->regul_count = ARRAY_SIZE(supply);
 
-       return 0;
+       return ret;
 fail:
        DRM_ERROR("HDMI resource init - failed\n");
-       return -ENODEV;
+       return ret;
 }
 
 static struct s5p_hdmi_platform_data *drm_hdmi_dt_parse_pdata
@@ -2303,24 +2310,37 @@ static int hdmi_probe(struct platform_device *pdev)
        struct resource *res;
        int ret;
 
-       if (!dev->of_node)
-               return -ENODEV;
+       ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR,
+                                       hdmi_display.type);
+       if (ret)
+               return ret;
+
+       if (!dev->of_node) {
+               ret = -ENODEV;
+               goto err_del_component;
+       }
 
        pdata = drm_hdmi_dt_parse_pdata(dev);
-       if (!pdata)
-               return -EINVAL;
+       if (!pdata) {
+               ret = -EINVAL;
+               goto err_del_component;
+       }
 
        hdata = devm_kzalloc(dev, sizeof(struct hdmi_context), GFP_KERNEL);
-       if (!hdata)
-               return -ENOMEM;
+       if (!hdata) {
+               ret = -ENOMEM;
+               goto err_del_component;
+       }
 
        mutex_init(&hdata->hdmi_mutex);
 
        platform_set_drvdata(pdev, &hdmi_display);
 
        match = of_match_node(hdmi_match_types, dev->of_node);
-       if (!match)
-               return -ENODEV;
+       if (!match) {
+               ret = -ENODEV;
+               goto err_del_component;
+       }
 
        drv_data = (struct hdmi_driver_data *)match->data;
        hdata->type = drv_data->type;
@@ -2333,18 +2353,20 @@ static int hdmi_probe(struct platform_device *pdev)
        ret = hdmi_resources_init(hdata);
        if (ret) {
                DRM_ERROR("hdmi_resources_init failed\n");
-               return -EINVAL;
+               return ret;
        }
 
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        hdata->regs = devm_ioremap_resource(dev, res);
-       if (IS_ERR(hdata->regs))
-               return PTR_ERR(hdata->regs);
+       if (IS_ERR(hdata->regs)) {
+               ret = PTR_ERR(hdata->regs);
+               goto err_del_component;
+       }
 
        ret = devm_gpio_request(dev, hdata->hpd_gpio, "HPD");
        if (ret) {
                DRM_ERROR("failed to request HPD gpio\n");
-               return ret;
+               goto err_del_component;
        }
 
        ddc_node = hdmi_legacy_ddc_dt_binding(dev);
@@ -2355,14 +2377,15 @@ static int hdmi_probe(struct platform_device *pdev)
        ddc_node = of_parse_phandle(dev->of_node, "ddc", 0);
        if (!ddc_node) {
                DRM_ERROR("Failed to find ddc node in device tree\n");
-               return -ENODEV;
+               ret = -ENODEV;
+               goto err_del_component;
        }
 
 out_get_ddc_adpt:
        hdata->ddc_adpt = of_find_i2c_adapter_by_node(ddc_node);
        if (!hdata->ddc_adpt) {
                DRM_ERROR("Failed to get ddc i2c adapter by node\n");
-               return -ENODEV;
+               return -EPROBE_DEFER;
        }
 
        phy_node = hdmi_legacy_phy_dt_binding(dev);
@@ -2389,7 +2412,7 @@ out_get_phy_port:
                hdata->hdmiphy_port = of_find_i2c_device_by_node(phy_node);
                if (!hdata->hdmiphy_port) {
                        DRM_ERROR("Failed to get hdmi phy i2c client\n");
-                       ret = -ENODEV;
+                       ret = -EPROBE_DEFER;
                        goto err_ddc;
                }
        }
@@ -2418,19 +2441,31 @@ out_get_phy_port:
                        "samsung,syscon-phandle");
        if (IS_ERR(hdata->pmureg)) {
                DRM_ERROR("syscon regmap lookup failed.\n");
+               ret = -EPROBE_DEFER;
                goto err_hdmiphy;
        }
 
        pm_runtime_enable(dev);
        hdmi_display.ctx = hdata;
 
-       return exynos_drm_component_add(&pdev->dev, &hdmi_component_ops);
+       ret = component_add(&pdev->dev, &hdmi_component_ops);
+       if (ret)
+               goto err_disable_pm_runtime;
+
+       return ret;
+
+err_disable_pm_runtime:
+       pm_runtime_disable(dev);
 
 err_hdmiphy:
        if (hdata->hdmiphy_port)
                put_device(&hdata->hdmiphy_port->dev);
 err_ddc:
        put_device(&hdata->ddc_adpt->dev);
+
+err_del_component:
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR);
+
        return ret;
 }
 
@@ -2444,8 +2479,9 @@ static int hdmi_remove(struct platform_device *pdev)
        put_device(&hdata->ddc_adpt->dev);
 
        pm_runtime_disable(&pdev->dev);
+       component_del(&pdev->dev, &hdmi_component_ops);
 
-       exynos_drm_component_del(&pdev->dev, &hdmi_component_ops);
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CONNECTOR);
        return 0;
 }
 

diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 483d7c08384a15d9ff280e314b432c1057d29ff4..4c5aed7e54c8ed909e1a608102b959831807a466 100644 (file)
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -1273,12 +1273,25 @@ static const struct component_ops mixer_component_ops = {
 
 static int mixer_probe(struct platform_device *pdev)
 {
-       return exynos_drm_component_add(&pdev->dev, &mixer_component_ops);
+       int ret;
+
+       ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC,
+                                       mixer_manager.type);
+       if (ret)
+               return ret;
+
+       ret = component_add(&pdev->dev, &mixer_component_ops);
+       if (ret)
+               exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
+
+       return ret;
 }
 
 static int mixer_remove(struct platform_device *pdev)
 {
-       exynos_drm_component_del(&pdev->dev, &mixer_component_ops);
+       component_del(&pdev->dev, &mixer_component_ops);
+       exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
+
        return 0;
 }