diff options
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_dev.c')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_dev.c | 74 |
1 files changed, 38 insertions, 36 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c index 937a6d4c4865..38b832804bad 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.c @@ -58,6 +58,8 @@ static void komeda_debugfs_init(struct komeda_dev *mdev) mdev->debugfs_root = debugfs_create_dir("komeda", NULL); debugfs_create_file("register", 0444, mdev->debugfs_root, mdev, &komeda_register_fops); + debugfs_create_x16("err_verbosity", 0664, mdev->debugfs_root, + &mdev->err_verbosity); } #endif @@ -113,22 +115,14 @@ static struct attribute_group komeda_sysfs_attr_group = { .attrs = komeda_sysfs_entries, }; -static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_node *np) +static int komeda_parse_pipe_dt(struct komeda_pipeline *pipe) { - struct komeda_pipeline *pipe; + struct device_node *np = pipe->of_node; struct clk *clk; - u32 pipe_id; - int ret = 0; - - ret = of_property_read_u32(np, "reg", &pipe_id); - if (ret != 0 || pipe_id >= mdev->n_pipelines) - return -EINVAL; - - pipe = mdev->pipelines[pipe_id]; clk = of_clk_get_by_name(np, "pxclk"); if (IS_ERR(clk)) { - DRM_ERROR("get pxclk for pipeline %d failed!\n", pipe_id); + DRM_ERROR("get pxclk for pipeline %d failed!\n", pipe->id); return PTR_ERR(clk); } pipe->pxlclk = clk; @@ -142,7 +136,6 @@ static int komeda_parse_pipe_dt(struct komeda_dev *mdev, struct device_node *np) of_graph_get_port_by_id(np, KOMEDA_OF_PORT_OUTPUT); pipe->dual_link = pipe->of_output_links[0] && pipe->of_output_links[1]; - pipe->of_node = of_node_get(np); return 0; } @@ -151,7 +144,9 @@ static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev) { struct platform_device *pdev = to_platform_device(dev); struct device_node *child, *np = dev->of_node; - int ret; + struct komeda_pipeline *pipe; + u32 pipe_id = U32_MAX; + int ret = -1; mdev->irq = platform_get_irq(pdev, 0); if (mdev->irq < 0) { @@ -166,37 +161,44 @@ static int komeda_parse_dt(struct device *dev, struct komeda_dev *mdev) ret = 0; for_each_available_child_of_node(np, child) { - if (of_node_cmp(child->name, "pipeline") == 0) { - ret = komeda_parse_pipe_dt(mdev, child); - if (ret) { - DRM_ERROR("parse pipeline dt error!\n"); - of_node_put(child); - break; + if (of_node_name_eq(child, "pipeline")) { + of_property_read_u32(child, "reg", &pipe_id); + if (pipe_id >= mdev->n_pipelines) { + DRM_WARN("Skip the redundant DT node: pipeline-%u.\n", + pipe_id); + continue; } + mdev->pipelines[pipe_id]->of_node = of_node_get(child); } } - return ret; + for (pipe_id = 0; pipe_id < mdev->n_pipelines; pipe_id++) { + pipe = mdev->pipelines[pipe_id]; + + if (!pipe->of_node) { + DRM_ERROR("Pipeline-%d doesn't have a DT node.\n", + pipe->id); + return -EINVAL; + } + ret = komeda_parse_pipe_dt(pipe); + if (ret) + return ret; + } + + return 0; } struct komeda_dev *komeda_dev_create(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); - const struct komeda_product_data *product; + komeda_identify_func komeda_identify; struct komeda_dev *mdev; - struct resource *io_res; int err = 0; - product = of_device_get_match_data(dev); - if (!product) + komeda_identify = of_device_get_match_data(dev); + if (!komeda_identify) return ERR_PTR(-ENODEV); - io_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!io_res) { - DRM_ERROR("No registers defined.\n"); - return ERR_PTR(-ENODEV); - } - mdev = devm_kzalloc(dev, sizeof(*mdev), GFP_KERNEL); if (!mdev) return ERR_PTR(-ENOMEM); @@ -204,7 +206,7 @@ struct komeda_dev *komeda_dev_create(struct device *dev) mutex_init(&mdev->lock); mdev->dev = dev; - mdev->reg_base = devm_ioremap_resource(dev, io_res); + mdev->reg_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(mdev->reg_base)) { DRM_ERROR("Map register space failed.\n"); err = PTR_ERR(mdev->reg_base); @@ -222,11 +224,9 @@ struct komeda_dev *komeda_dev_create(struct device *dev) clk_prepare_enable(mdev->aclk); - mdev->funcs = product->identify(mdev->reg_base, &mdev->chip); - if (!komeda_product_match(mdev, product->product_id)) { - DRM_ERROR("DT configured %x mismatch with real HW %x.\n", - product->product_id, - MALIDP_CORE_ID_PRODUCT_ID(mdev->chip.core_id)); + mdev->funcs = komeda_identify(mdev->reg_base, &mdev->chip); + if (!mdev->funcs) { + DRM_ERROR("Failed to identify the HW.\n"); err = -ENODEV; goto disable_clk; } @@ -280,6 +280,8 @@ struct komeda_dev *komeda_dev_create(struct device *dev) goto err_cleanup; } + mdev->err_verbosity = KOMEDA_DEV_PRINT_ERR_EVENTS; + #ifdef CONFIG_DEBUG_FS komeda_debugfs_init(mdev); #endif |