On 06/05/2014 05:42 AM, Inki Dae wrote: > On 2014년 06월 04일 20:24, Andrzej Hajda wrote: >> On 05/29/2014 11:28 AM, Inki Dae wrote: >>> 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. >> Do we really need it? It adds lot of code which in fact does not improve >> exynos_drm - if some driver or device is missing drm will fail at load >> or it will start with unusable pipeline anyway, the latter can be >> changed to error as well. > Previous version also incurred unusable pipeline: crtc driver is bound > even though probe of connector/encoder driver returned error. In this > case, the crtc driver would have nothing to do alone without > connector/encoder part. That was because exynos_drm_component_del were used on probe fail and remove callbacks. I have commented it in [1], I forgot to add that exynos_drm_add_components should return success only if all components from the list are present and added successfully. [1]: http://permalink.gmane.org/gmane.linux.kernel.samsung-soc/32463 > >>> - Remove unnecessary patch: >>> drm/exynos: mipi-dsi: consider panel driver-deferred probe >>> - Return error type correctly. >>> >>> Signed-off-by: Inki Dae <inki.dae@xxxxxxxxxxx> >>> Acked-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx> >>> --- >>> drivers/gpu/drm/exynos/exynos_dp_core.c | 18 +++- >>> drivers/gpu/drm/exynos/exynos_drm_dpi.c | 22 ++++- >>> drivers/gpu/drm/exynos/exynos_drm_drv.c | 139 +++++++++++++++++++++++++----- >>> drivers/gpu/drm/exynos/exynos_drm_drv.h | 13 ++- >>> drivers/gpu/drm/exynos/exynos_drm_dsi.c | 41 ++++++--- >>> drivers/gpu/drm/exynos/exynos_drm_fimd.c | 51 ++++++++--- >>> drivers/gpu/drm/exynos/exynos_hdmi.c | 78 ++++++++++++----- >>> drivers/gpu/drm/exynos/exynos_mixer.c | 17 +++- >>> 8 files changed, 304 insertions(+), 75 deletions(-) >>> >>> diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c >>> index ff63901..a892586 100644 >>> --- a/drivers/gpu/drm/exynos/exynos_dp_core.c >>> +++ b/drivers/gpu/drm/exynos/exynos_dp_core.c >>> @@ -1328,12 +1328,26 @@ 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); >> As I wrote in the previous comment calling exynos_drm_component_del here >> will cause exynos_drv to stop waiting for exynos_dp to bring up drm >> again, which is wrong. The same comment is valid for all other calls of >> exynos_drm_component_del in *_remove and *_probe. >> Or maybe I miss something??? >> > If we remove exynos_drm_component_del calls, the deferred probe case > doesn't work correctly. Assume that connector/encoder driver returned > -EPROBE_DEFER but its corresponding crtc driver worked correctly. In > this case, if we don't call exynos_drm_component_del function at fail > case, exynos drm core will try to bind the sub driver which returned > -EPROBE_DEFER. However, the sub driver will be probed by deferred probe > again, and will call exynos_drm_component_add again. That would be your > missing point. Yes, I forgot again to examine exynos_drm_add_components. I would change its behavior as described in my previous commit. Regards Andrzej > > >>> + >>> return 0; >>> } >>> >>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dpi.c b/drivers/gpu/drm/exynos/exynos_drm_dpi.c >>> index a832364..f1b8587 100644 >>> --- 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 c5a401ae..72a5de1 100644 >>> --- 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 +496,61 @@ 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. >> It should not happen as DPI is not a separate ip block, it is just >> integeral part of fimd. >> > Hm.. agree. it seems that we may need more clear way. > >>> + */ >>> + 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); >> >> The sequence above (up to my previous comment) could be simplified, to >> sth like this: >> >> ret = component_master_add_child(m, compare_of, >> cdev->crtc_dev); >> if (!ret && cdev->crtc_dev != cdev->conn_dev) >> ret = component_master_add_child(m, compare_of, >> cdev->conn_dev); >> >> Regards >> Andrzej >> >> >>> + 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 e82e620..36535f3 100644 >>> --- 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 84661fe..6302aa6 100644 >>> --- 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 bd30d0c..47a772d 100644 >>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> @@ -941,12 +941,21 @@ 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; >>> @@ -959,32 +968,37 @@ 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); >>> @@ -1001,14 +1015,27 @@ 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 e05c86a..0c3bcee 100644 >>> --- a/drivers/gpu/drm/exynos/exynos_hdmi.c >>> +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c >>> @@ -2134,26 +2134,31 @@ 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; >>> } >>> >>> @@ -2161,8 +2166,10 @@ 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; >>> @@ -2170,14 +2177,14 @@ 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 >>> @@ -2275,24 +2282,37 @@ 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; >>> @@ -2305,18 +2325,20 @@ 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); >>> @@ -2327,14 +2349,15 @@ 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); >>> @@ -2361,7 +2384,7 @@ 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; >>> } >>> } >>> @@ -2390,19 +2413,31 @@ 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; >>> } >>> >>> @@ -2416,8 +2451,9 @@ 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 483d7c0..4c5aed7 100644 >>> --- 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; >>> } >>> >>> >> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in >> the body of a message to majordomo@xxxxxxxxxxxxxxx >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
