From: Neil Armstrong Date: Tue, 4 Apr 2017 12:15:23 +0000 (+0200) Subject: drm/meson: Add support for components X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a41e82e6c4575b6c0a48bcc25a3feae4b2910934;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/meson: Add support for components This patch adds support for optional components connected through the Device Tree endpoints scheme. Acked-by: Daniel Vetter Signed-off-by: Neil Armstrong --- diff --git a/drivers/gpu/drm/meson/meson_drv.c b/drivers/gpu/drm/meson/meson_drv.c index bc562a07847b..a2e9f561ac89 100644 --- a/drivers/gpu/drm/meson/meson_drv.c +++ b/drivers/gpu/drm/meson/meson_drv.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -150,9 +151,9 @@ static struct regmap_config meson_regmap_config = { .max_register = 0x1000, }; -static int meson_drv_probe(struct platform_device *pdev) +static int meson_drv_bind(struct device *dev) { - struct device *dev = &pdev->dev; + struct platform_device *pdev = to_platform_device(dev); struct meson_drm *priv; struct drm_device *drm; struct resource *res; @@ -215,6 +216,15 @@ static int meson_drv_probe(struct platform_device *pdev) drm_vblank_init(drm, 1); drm_mode_config_init(drm); + drm->mode_config.max_width = 3840; + drm->mode_config.max_height = 2160; + drm->mode_config.funcs = &meson_mode_config_funcs; + + /* Hardware Initialization */ + + meson_venc_init(priv); + meson_vpp_init(priv); + meson_viu_init(priv); /* Encoder Initialization */ @@ -222,11 +232,11 @@ static int meson_drv_probe(struct platform_device *pdev) if (ret) goto free_drm; - /* Hardware Initialization */ - - meson_venc_init(priv); - meson_vpp_init(priv); - meson_viu_init(priv); + ret = component_bind_all(drm->dev, drm); + if (ret) { + dev_err(drm->dev, "Couldn't bind all components\n"); + goto free_drm; + } ret = meson_plane_create(priv); if (ret) @@ -241,9 +251,6 @@ static int meson_drv_probe(struct platform_device *pdev) goto free_drm; drm_mode_config_reset(drm); - drm->mode_config.max_width = 8192; - drm->mode_config.max_height = 8192; - drm->mode_config.funcs = &meson_mode_config_funcs; priv->fbdev = drm_fbdev_cma_init(drm, 32, drm->mode_config.num_connector); @@ -268,9 +275,9 @@ free_drm: return ret; } -static int meson_drv_remove(struct platform_device *pdev) +static void meson_drv_unbind(struct device *dev) { - struct drm_device *drm = dev_get_drvdata(&pdev->dev); + struct drm_device *drm = dev_get_drvdata(dev); struct meson_drm *priv = drm->dev_private; drm_dev_unregister(drm); @@ -280,9 +287,88 @@ static int meson_drv_remove(struct platform_device *pdev) drm_vblank_cleanup(drm); drm_dev_unref(drm); - return 0; } +static const struct component_master_ops meson_drv_master_ops = { + .bind = meson_drv_bind, + .unbind = meson_drv_unbind, +}; + +static int compare_of(struct device *dev, void *data) +{ + DRM_DEBUG_DRIVER("Comparing of node %s with %s\n", + of_node_full_name(dev->of_node), + of_node_full_name(data)); + + return dev->of_node == data; +} + +/* Possible connectors nodes to ignore */ +static const struct of_device_id connectors_match[] = { + { .compatible = "composite-video-connector" }, + { .compatible = "svideo-connector" }, + { .compatible = "hdmi-connector" }, + { .compatible = "dvi-connector" }, + {} +}; + +static int meson_probe_remote(struct platform_device *pdev, + struct component_match **match, + struct device_node *parent, + struct device_node *remote) +{ + struct device_node *ep, *remote_node; + int count = 1; + + /* If node is a connector, return and do not add to match table */ + if (of_match_node(connectors_match, remote)) + return 1; + + component_match_add(&pdev->dev, match, compare_of, remote); + + for_each_endpoint_of_node(remote, ep) { + remote_node = of_graph_get_remote_port_parent(ep); + if (!remote_node || + remote_node == parent || /* Ignore parent endpoint */ + !of_device_is_available(remote_node)) + continue; + + count += meson_probe_remote(pdev, match, remote, remote_node); + + of_node_put(remote_node); + } + + return count; +} + +static int meson_drv_probe(struct platform_device *pdev) +{ + struct component_match *match = NULL; + struct device_node *np = pdev->dev.of_node; + struct device_node *ep, *remote; + int count = 0; + + for_each_endpoint_of_node(np, ep) { + remote = of_graph_get_remote_port_parent(ep); + if (!remote || !of_device_is_available(remote)) + continue; + + count += meson_probe_remote(pdev, &match, np, remote); + } + + /* If some endpoints were found, initialize the nodes */ + if (count) { + dev_info(&pdev->dev, "Queued %d outputs on vpu\n", count); + + return component_master_add_with_match(&pdev->dev, + &meson_drv_master_ops, + match); + } + + /* If no output endpoints were available, simply bail out */ + return 0; +}; + static const struct of_device_id dt_match[] = { { .compatible = "amlogic,meson-gxbb-vpu" }, { .compatible = "amlogic,meson-gxl-vpu" }, @@ -293,7 +379,6 @@ MODULE_DEVICE_TABLE(of, dt_match); static struct platform_driver meson_drm_platform_driver = { .probe = meson_drv_probe, - .remove = meson_drv_remove, .driver = { .name = "meson-drm", .of_match_table = dt_match,