drm: xlnx: zynqmp_dpsub: Decouple DRM device from zynqmp_dpsub
To complete the decoupling of the DRM device from the zynqmp_dpsub, group all DRM-related structures in a zynqmp_dpsub_drm structure and allocate it separately from the zynqmp_dpsub. The DRM managed allocation of the drm_device now doesn't cover the zynqmp_dpsub anymore, so we need to register a cleanup action to release the zynqmp_dpsub when the drm_device is released. The will allow usage of the DisplayPort encoder as a standalone bridge, without registering a DRM device in this driver. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
parent
074ef0ce9f
commit
d189835fff
drivers/gpu/drm/xlnx
@ -18,8 +18,6 @@
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#include <linux/slab.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_modeset_helper.h>
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#include <drm/drm_module.h>
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@ -36,14 +34,20 @@ static int __maybe_unused zynqmp_dpsub_suspend(struct device *dev)
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{
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struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev);
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return drm_mode_config_helper_suspend(&dpsub->drm);
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if (!dpsub->drm)
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return 0;
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return drm_mode_config_helper_suspend(&dpsub->drm->dev);
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}
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static int __maybe_unused zynqmp_dpsub_resume(struct device *dev)
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{
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struct zynqmp_dpsub *dpsub = dev_get_drvdata(dev);
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return drm_mode_config_helper_resume(&dpsub->drm);
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if (!dpsub->drm)
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return 0;
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return drm_mode_config_helper_resume(&dpsub->drm->dev);
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}
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static const struct dev_pm_ops zynqmp_dpsub_pm_ops = {
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@ -138,12 +142,11 @@ static int zynqmp_dpsub_init_clocks(struct zynqmp_dpsub *dpsub)
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return 0;
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}
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static void zynqmp_dpsub_release(struct drm_device *drm, void *res)
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void zynqmp_dpsub_release(struct zynqmp_dpsub *dpsub)
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{
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struct zynqmp_dpsub *dpsub = res;
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kfree(dpsub->disp);
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kfree(dpsub->dp);
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kfree(dpsub);
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}
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static int zynqmp_dpsub_probe(struct platform_device *pdev)
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@ -152,14 +155,9 @@ static int zynqmp_dpsub_probe(struct platform_device *pdev)
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int ret;
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/* Allocate private data. */
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dpsub = devm_drm_dev_alloc(&pdev->dev, &zynqmp_dpsub_drm_driver,
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struct zynqmp_dpsub, drm);
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if (IS_ERR(dpsub))
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return PTR_ERR(dpsub);
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ret = drmm_add_action(&dpsub->drm, zynqmp_dpsub_release, dpsub);
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if (ret < 0)
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return ret;
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dpsub = kzalloc(sizeof(*dpsub), GFP_KERNEL);
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if (!dpsub)
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return -ENOMEM;
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dpsub->dev = &pdev->dev;
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platform_set_drvdata(pdev, dpsub);
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@ -204,6 +202,8 @@ err_pm:
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clk_disable_unprepare(dpsub->apb_clk);
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err_mem:
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of_reserved_mem_device_release(&pdev->dev);
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if (!dpsub->drm)
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zynqmp_dpsub_release(dpsub);
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return ret;
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}
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@ -211,7 +211,8 @@ static int zynqmp_dpsub_remove(struct platform_device *pdev)
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{
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struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev);
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zynqmp_dpsub_drm_cleanup(dpsub);
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if (dpsub->drm)
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zynqmp_dpsub_drm_cleanup(dpsub);
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zynqmp_disp_remove(dpsub);
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zynqmp_dp_remove(dpsub);
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@ -220,6 +221,9 @@ static int zynqmp_dpsub_remove(struct platform_device *pdev)
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clk_disable_unprepare(dpsub->apb_clk);
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of_reserved_mem_device_release(&pdev->dev);
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if (!dpsub->drm)
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zynqmp_dpsub_release(dpsub);
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return 0;
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}
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@ -227,7 +231,10 @@ static void zynqmp_dpsub_shutdown(struct platform_device *pdev)
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{
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struct zynqmp_dpsub *dpsub = platform_get_drvdata(pdev);
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drm_atomic_helper_shutdown(&dpsub->drm);
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if (!dpsub->drm)
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return;
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drm_atomic_helper_shutdown(&dpsub->drm->dev);
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}
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static const struct of_device_id zynqmp_dpsub_of_match[] = {
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@ -12,17 +12,13 @@
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#ifndef _ZYNQMP_DPSUB_H_
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#define _ZYNQMP_DPSUB_H_
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#include <drm/drm_crtc.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_plane.h>
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struct clk;
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struct device;
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struct drm_bridge;
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struct drm_device;
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struct zynqmp_disp;
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struct zynqmp_disp_layer;
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struct zynqmp_dp;
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struct zynqmp_dpsub_drm;
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#define ZYNQMP_DPSUB_NUM_LAYERS 2
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@ -35,23 +31,19 @@ enum zynqmp_dpsub_format {
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/**
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* struct zynqmp_dpsub - ZynqMP DisplayPort Subsystem
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* @drm: The DRM/KMS device
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* @dev: The physical device
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* @apb_clk: The APB clock
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* @vid_clk: Video clock
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* @vid_clk_from_ps: True of the video clock comes from PS, false from PL
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* @aud_clk: Audio clock
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* @aud_clk_from_ps: True of the audio clock comes from PS, false from PL
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* @planes: The DRM planes
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* @crtc: The DRM CRTC
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* @encoder: The dummy DRM encoder
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* @drm: The DRM/KMS device data
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* @bridge: The DP encoder bridge
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* @disp: The display controller
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* @dp: The DisplayPort controller
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* @dma_align: DMA alignment constraint (must be a power of 2)
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*/
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struct zynqmp_dpsub {
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struct drm_device drm;
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struct device *dev;
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struct clk *apb_clk;
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@ -60,9 +52,7 @@ struct zynqmp_dpsub {
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struct clk *aud_clk;
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bool aud_clk_from_ps;
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struct drm_plane planes[ZYNQMP_DPSUB_NUM_LAYERS];
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struct drm_crtc crtc;
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struct drm_encoder encoder;
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struct zynqmp_dpsub_drm *drm;
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struct drm_bridge *bridge;
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struct zynqmp_disp *disp;
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@ -75,4 +65,6 @@ struct zynqmp_dpsub {
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bool zynqmp_dpsub_audio_enabled(struct zynqmp_dpsub *dpsub);
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unsigned int zynqmp_dpsub_get_audio_clk_rate(struct zynqmp_dpsub *dpsub);
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void zynqmp_dpsub_release(struct zynqmp_dpsub *dpsub);
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#endif /* _ZYNQMP_DPSUB_H_ */
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@ -44,7 +44,7 @@
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static inline struct zynqmp_dpsub *to_zynqmp_dpsub(struct drm_device *drm)
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{
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return container_of(drm, struct zynqmp_dpsub, drm);
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return container_of(drm, struct zynqmp_dpsub_drm, dev)->dpsub;
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}
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/* -----------------------------------------------------------------------------
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@ -146,9 +146,9 @@ static int zynqmp_dpsub_create_planes(struct zynqmp_dpsub *dpsub)
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unsigned int i;
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int ret;
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for (i = 0; i < ARRAY_SIZE(dpsub->planes); i++) {
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for (i = 0; i < ARRAY_SIZE(dpsub->drm->planes); i++) {
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struct zynqmp_disp_layer *layer = dpsub->layers[i];
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struct drm_plane *plane = &dpsub->planes[i];
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struct drm_plane *plane = &dpsub->drm->planes[i];
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enum drm_plane_type type;
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unsigned int num_formats;
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u32 *formats;
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@ -160,7 +160,7 @@ static int zynqmp_dpsub_create_planes(struct zynqmp_dpsub *dpsub)
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/* Graphics layer is primary, and video layer is overlay. */
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type = i == ZYNQMP_DPSUB_LAYER_VID
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? DRM_PLANE_TYPE_OVERLAY : DRM_PLANE_TYPE_PRIMARY;
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ret = drm_universal_plane_init(&dpsub->drm, plane, 0,
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ret = drm_universal_plane_init(&dpsub->drm->dev, plane, 0,
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&zynqmp_dpsub_plane_funcs,
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formats, num_formats,
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NULL, type, NULL);
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@ -184,7 +184,7 @@ static int zynqmp_dpsub_create_planes(struct zynqmp_dpsub *dpsub)
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static inline struct zynqmp_dpsub *crtc_to_dpsub(struct drm_crtc *crtc)
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{
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return container_of(crtc, struct zynqmp_dpsub, crtc);
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return container_of(crtc, struct zynqmp_dpsub_drm, crtc)->dpsub;
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}
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static void zynqmp_dpsub_crtc_atomic_enable(struct drm_crtc *crtc,
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@ -312,11 +312,11 @@ static const struct drm_crtc_funcs zynqmp_dpsub_crtc_funcs = {
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static int zynqmp_dpsub_create_crtc(struct zynqmp_dpsub *dpsub)
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{
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struct drm_plane *plane = &dpsub->planes[ZYNQMP_DPSUB_LAYER_GFX];
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struct drm_crtc *crtc = &dpsub->crtc;
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struct drm_plane *plane = &dpsub->drm->planes[ZYNQMP_DPSUB_LAYER_GFX];
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struct drm_crtc *crtc = &dpsub->drm->crtc;
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int ret;
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ret = drm_crtc_init_with_planes(&dpsub->drm, crtc, plane,
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ret = drm_crtc_init_with_planes(&dpsub->drm->dev, crtc, plane,
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NULL, &zynqmp_dpsub_crtc_funcs, NULL);
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if (ret < 0)
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return ret;
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@ -331,11 +331,11 @@ static int zynqmp_dpsub_create_crtc(struct zynqmp_dpsub *dpsub)
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static void zynqmp_dpsub_map_crtc_to_plane(struct zynqmp_dpsub *dpsub)
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{
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u32 possible_crtcs = drm_crtc_mask(&dpsub->crtc);
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u32 possible_crtcs = drm_crtc_mask(&dpsub->drm->crtc);
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(dpsub->planes); i++)
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dpsub->planes[i].possible_crtcs = possible_crtcs;
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for (i = 0; i < ARRAY_SIZE(dpsub->drm->planes); i++)
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dpsub->drm->planes[i].possible_crtcs = possible_crtcs;
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}
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/**
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@ -347,7 +347,7 @@ static void zynqmp_dpsub_map_crtc_to_plane(struct zynqmp_dpsub *dpsub)
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*/
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void zynqmp_dpsub_handle_vblank(struct zynqmp_dpsub *dpsub)
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{
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drm_crtc_handle_vblank(&dpsub->crtc);
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drm_crtc_handle_vblank(&dpsub->drm->crtc);
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}
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/* -----------------------------------------------------------------------------
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@ -394,7 +394,7 @@ static const struct drm_mode_config_funcs zynqmp_dpsub_mode_config_funcs = {
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DEFINE_DRM_GEM_DMA_FOPS(zynqmp_dpsub_drm_fops);
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const struct drm_driver zynqmp_dpsub_drm_driver = {
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static const struct drm_driver zynqmp_dpsub_drm_driver = {
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.driver_features = DRIVER_MODESET | DRIVER_GEM |
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DRIVER_ATOMIC,
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@ -411,7 +411,7 @@ const struct drm_driver zynqmp_dpsub_drm_driver = {
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static int zynqmp_dpsub_kms_init(struct zynqmp_dpsub *dpsub)
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{
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struct drm_encoder *encoder = &dpsub->encoder;
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struct drm_encoder *encoder = &dpsub->drm->encoder;
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struct drm_connector *connector;
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int ret;
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@ -427,8 +427,8 @@ static int zynqmp_dpsub_kms_init(struct zynqmp_dpsub *dpsub)
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zynqmp_dpsub_map_crtc_to_plane(dpsub);
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/* Create the encoder and attach the bridge. */
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encoder->possible_crtcs |= drm_crtc_mask(&dpsub->crtc);
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drm_simple_encoder_init(&dpsub->drm, encoder, DRM_MODE_ENCODER_NONE);
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encoder->possible_crtcs |= drm_crtc_mask(&dpsub->drm->crtc);
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drm_simple_encoder_init(&dpsub->drm->dev, encoder, DRM_MODE_ENCODER_NONE);
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ret = drm_bridge_attach(encoder, dpsub->bridge, NULL,
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DRM_BRIDGE_ATTACH_NO_CONNECTOR);
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@ -438,7 +438,7 @@ static int zynqmp_dpsub_kms_init(struct zynqmp_dpsub *dpsub)
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}
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/* Create the connector for the chain of bridges. */
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connector = drm_bridge_connector_init(&dpsub->drm, encoder);
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connector = drm_bridge_connector_init(&dpsub->drm->dev, encoder);
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if (IS_ERR(connector)) {
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dev_err(dpsub->dev, "failed to created connector\n");
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return PTR_ERR(connector);
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@ -453,11 +453,39 @@ static int zynqmp_dpsub_kms_init(struct zynqmp_dpsub *dpsub)
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return 0;
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}
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static void zynqmp_dpsub_drm_release(struct drm_device *drm, void *res)
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{
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struct zynqmp_dpsub_drm *dpdrm = res;
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zynqmp_dpsub_release(dpdrm->dpsub);
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}
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int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
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{
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struct drm_device *drm = &dpsub->drm;
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struct zynqmp_dpsub_drm *dpdrm;
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struct drm_device *drm;
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int ret;
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/*
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* Allocate the drm_device and immediately add a cleanup action to
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* release the zynqmp_dpsub instance. If any of those operations fail,
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* dpsub->drm will remain NULL, which tells the caller that it must
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* cleanup manually.
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*/
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dpdrm = devm_drm_dev_alloc(dpsub->dev, &zynqmp_dpsub_drm_driver,
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struct zynqmp_dpsub_drm, dev);
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if (IS_ERR(dpdrm))
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return PTR_ERR(dpdrm);
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dpdrm->dpsub = dpsub;
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drm = &dpdrm->dev;
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ret = drmm_add_action(drm, zynqmp_dpsub_drm_release, dpdrm);
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if (ret < 0)
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return ret;
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dpsub->drm = dpdrm;
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/* Initialize mode config, vblank and the KMS poll helper. */
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ret = drmm_mode_config_init(drm);
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if (ret < 0)
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@ -498,7 +526,7 @@ err_poll_fini:
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void zynqmp_dpsub_drm_cleanup(struct zynqmp_dpsub *dpsub)
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{
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struct drm_device *drm = &dpsub->drm;
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struct drm_device *drm = &dpsub->drm->dev;
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drm_dev_unregister(drm);
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drm_atomic_helper_shutdown(drm);
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@ -12,9 +12,31 @@
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#ifndef _ZYNQMP_KMS_H_
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#define _ZYNQMP_KMS_H_
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#include <drm/drm_crtc.h>
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#include <drm/drm_device.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_plane.h>
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#include "zynqmp_dpsub.h"
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struct zynqmp_dpsub;
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extern const struct drm_driver zynqmp_dpsub_drm_driver;
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/**
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* struct zynqmp_dpsub - ZynqMP DisplayPort Subsystem DRM/KMS data
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* @dpsub: Backpointer to the DisplayPort subsystem
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* @drm: The DRM/KMS device
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* @planes: The DRM planes
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* @crtc: The DRM CRTC
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* @encoder: The dummy DRM encoder
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*/
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struct zynqmp_dpsub_drm {
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struct zynqmp_dpsub *dpsub;
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struct drm_device dev;
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struct drm_plane planes[ZYNQMP_DPSUB_NUM_LAYERS];
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struct drm_crtc crtc;
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struct drm_encoder encoder;
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};
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void zynqmp_dpsub_handle_vblank(struct zynqmp_dpsub *dpsub);
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