From 4cfe5cc02e3f62ef4fe96a4e1fbda84e7a6d279e Mon Sep 17 00:00:00 2001 From: Faiz Abbas Date: Wed, 12 Jul 2023 12:19:37 +0530 Subject: [PATCH] drm/arm/komeda: Remove component framework and add a simple encoder The Komeda driver always expects the remote connector node to initialize an encoder. It uses the component aggregator framework which consists of component->bind() calls used to initialize the remote encoder and attach it to the crtc. This makes it incompatible with connector drivers which implement drm_bridge APIs. Remove all component framework calls from the komeda driver and declare and attach an encoder inside komeda_crtc_add(). The remote connector driver has to implement the DRM bridge APIs which can be used to glue the encoder to the remote connector. Since we usually pair this with a component encoder that also implements a drm_bridge, dropping support is not expected to affect users of this driver. Signed-off-by: Faiz Abbas Message-ID: <20230712064937.25192-1-faiz.abbas@arm.com> [small white space fixes flagged by checkpatch.pl] Signed-off-by: Liviu Dudau Link: https://patchwork.freedesktop.org/patch/msgid/20230712064937.25192-1-faiz.abbas@arm.com --- drivers/gpu/drm/arm/display/komeda/komeda_crtc.c | 22 +++++++++- drivers/gpu/drm/arm/display/komeda/komeda_drv.c | 55 ++---------------------- drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 11 +---- drivers/gpu/drm/arm/display/komeda/komeda_kms.h | 3 ++ 4 files changed, 29 insertions(+), 62 deletions(-) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c index cea3fd5..2c661f2 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c @@ -12,6 +12,8 @@ #include #include #include +#include +#include #include "komeda_dev.h" #include "komeda_kms.h" @@ -612,9 +614,11 @@ static int komeda_crtc_add(struct komeda_kms_dev *kms, struct komeda_crtc *kcrtc) { struct drm_crtc *crtc = &kcrtc->base; + struct drm_device *base = &kms->base; + struct drm_bridge *bridge; int err; - err = drm_crtc_init_with_planes(&kms->base, crtc, + err = drm_crtc_init_with_planes(base, crtc, get_crtc_primary(kms, kcrtc), NULL, &komeda_crtc_funcs, NULL); if (err) @@ -624,6 +628,22 @@ static int komeda_crtc_add(struct komeda_kms_dev *kms, crtc->port = kcrtc->master->of_output_port; + /* Construct an encoder for each pipeline and attach it to the remote + * bridge + */ + kcrtc->encoder.possible_crtcs = drm_crtc_mask(crtc); + err = drm_simple_encoder_init(base, &kcrtc->encoder, + DRM_MODE_ENCODER_TMDS); + if (err) + return err; + + bridge = devm_drm_of_get_bridge(base->dev, kcrtc->master->of_node, + KOMEDA_OF_PORT_OUTPUT, 0); + if (IS_ERR(bridge)) + return PTR_ERR(bridge); + + err = drm_bridge_attach(&kcrtc->encoder, bridge, NULL, 0); + drm_crtc_enable_color_mgmt(crtc, 0, true, KOMEDA_COLOR_LUT_SIZE); return err; diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c index c597c36..cb2a2be 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c @@ -8,7 +8,6 @@ #include #include #include -#include #include #include #include @@ -28,13 +27,11 @@ struct komeda_dev *dev_to_mdev(struct device *dev) return mdrv ? mdrv->mdev : NULL; } -static void komeda_unbind(struct device *dev) +static void komeda_platform_remove(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct komeda_drv *mdrv = dev_get_drvdata(dev); - if (!mdrv) - return; - komeda_kms_detach(mdrv->kms); if (pm_runtime_enabled(dev)) @@ -48,8 +45,9 @@ static void komeda_unbind(struct device *dev) devm_kfree(dev, mdrv); } -static int komeda_bind(struct device *dev) +static int komeda_platform_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct komeda_drv *mdrv; int err; @@ -91,51 +89,6 @@ free_mdrv: return err; } -static const struct component_master_ops komeda_master_ops = { - .bind = komeda_bind, - .unbind = komeda_unbind, -}; - -static void komeda_add_slave(struct device *master, - struct component_match **match, - struct device_node *np, - u32 port, u32 endpoint) -{ - struct device_node *remote; - - remote = of_graph_get_remote_node(np, port, endpoint); - if (remote) { - drm_of_component_match_add(master, match, component_compare_of, remote); - of_node_put(remote); - } -} - -static int komeda_platform_probe(struct platform_device *pdev) -{ - struct device *dev = &pdev->dev; - struct component_match *match = NULL; - struct device_node *child; - - if (!dev->of_node) - return -ENODEV; - - for_each_available_child_of_node(dev->of_node, child) { - if (of_node_cmp(child->name, "pipeline") != 0) - continue; - - /* add connector */ - komeda_add_slave(dev, &match, child, KOMEDA_OF_PORT_OUTPUT, 0); - komeda_add_slave(dev, &match, child, KOMEDA_OF_PORT_OUTPUT, 1); - } - - return component_master_add_with_match(dev, &komeda_master_ops, match); -} - -static void komeda_platform_remove(struct platform_device *pdev) -{ - component_master_del(&pdev->dev, &komeda_master_ops); -} - static const struct of_device_id komeda_of_match[] = { { .compatible = "arm,mali-d71", .data = d71_identify, }, { .compatible = "arm,mali-d32", .data = d71_identify, }, diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c index 62dc645..9299026 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c @@ -4,7 +4,6 @@ * Author: James.Qian.Wang * */ -#include #include #include @@ -305,17 +304,13 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev) if (err) goto cleanup_mode_config; - err = component_bind_all(mdev->dev, kms); - if (err) - goto cleanup_mode_config; - drm_mode_config_reset(drm); err = devm_request_irq(drm->dev, mdev->irq, komeda_kms_irq_handler, IRQF_SHARED, drm->driver->name, drm); if (err) - goto free_component_binding; + goto cleanup_mode_config; drm_kms_helper_poll_init(drm); @@ -327,8 +322,6 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev) free_interrupts: drm_kms_helper_poll_fini(drm); -free_component_binding: - component_unbind_all(mdev->dev, drm); cleanup_mode_config: drm_mode_config_cleanup(drm); komeda_kms_cleanup_private_objs(kms); @@ -339,12 +332,10 @@ cleanup_mode_config: void komeda_kms_detach(struct komeda_kms_dev *kms) { struct drm_device *drm = &kms->base; - struct komeda_dev *mdev = drm->dev_private; drm_dev_unregister(drm); drm_kms_helper_poll_fini(drm); drm_atomic_helper_shutdown(drm); - component_unbind_all(mdev->dev, drm); drm_mode_config_cleanup(drm); komeda_kms_cleanup_private_objs(kms); drm->dev_private = NULL; diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h index 3a872c2..6ef6553 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.h +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.h @@ -84,6 +84,9 @@ struct komeda_crtc { /** @disable_done: this flip_done is for tracing the disable */ struct completion *disable_done; + + /** @encoder: encoder at the end of the pipeline */ + struct drm_encoder encoder; }; /** -- 2.7.4