drm/komeda: Attach komeda_dev to DRM-KMS
Add komeda_kms abstracton to attach komeda_dev to DRM-KMS CRTC: according to the komeda_pipeline PLANE: according to komeda_layer (layer input pipeline) PRIVATE_OBJS: komeda_pipeline/component all will be treat as private_objs komeda_kms is for connecting DRM-KMS and komeda_dev, like reporting the kms object properties according to the komeda_dev, and pass/convert KMS's requirement to komeda_dev. Changes in v4: - Set drm_atomic_helper_check as mode_config->atomic_check. Changes in v3: - Fixed style problem found by checkpatch.pl --strict. Changes in v2: - Unified abbreviation of "pipeline" to "pipe". Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
james qian wang (Arm Technology China)
Liviu Dudau
Родитель
c46c24bb6b
Коммит
61f1c4a8ab
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@ -9,7 +9,11 @@ komeda-y := \
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komeda_dev.o \
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komeda_format_caps.o \
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komeda_pipeline.o \
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komeda_framebuffer.o
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komeda_framebuffer.o \
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komeda_kms.o \
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komeda_crtc.o \
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komeda_plane.o \
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komeda_private_obj.o
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komeda-y += \
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d71/d71_dev.o
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@ -0,0 +1,106 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
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* Author: James.Qian.Wang <james.qian.wang@arm.com>
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*
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*/
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#include <linux/clk.h>
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#include <linux/spinlock.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_plane_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <linux/pm_runtime.h>
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#include "komeda_dev.h"
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#include "komeda_kms.h"
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struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
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};
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static const struct drm_crtc_funcs komeda_crtc_funcs = {
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};
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int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
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struct komeda_dev *mdev)
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{
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struct komeda_crtc *crtc;
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struct komeda_pipeline *master;
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char str[16];
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int i;
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kms->n_crtcs = 0;
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for (i = 0; i < mdev->n_pipelines; i++) {
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crtc = &kms->crtcs[kms->n_crtcs];
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master = mdev->pipelines[i];
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crtc->master = master;
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crtc->slave = NULL;
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if (crtc->slave)
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sprintf(str, "pipe-%d", crtc->slave->id);
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else
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sprintf(str, "None");
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DRM_INFO("crtc%d: master(pipe-%d) slave(%s) output: %s.\n",
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kms->n_crtcs, master->id, str,
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master->of_output_dev ?
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master->of_output_dev->full_name : "None");
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kms->n_crtcs++;
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}
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return 0;
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}
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static struct drm_plane *
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get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc)
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{
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struct komeda_plane *kplane;
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struct drm_plane *plane;
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drm_for_each_plane(plane, &kms->base) {
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if (plane->type != DRM_PLANE_TYPE_PRIMARY)
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continue;
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kplane = to_kplane(plane);
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/* only master can be primary */
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if (kplane->layer->base.pipeline == crtc->master)
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return plane;
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}
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return NULL;
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}
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static int komeda_crtc_add(struct komeda_kms_dev *kms,
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struct komeda_crtc *kcrtc)
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{
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struct drm_crtc *crtc = &kcrtc->base;
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int err;
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err = drm_crtc_init_with_planes(&kms->base, crtc,
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get_crtc_primary(kms, kcrtc), NULL,
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&komeda_crtc_funcs, NULL);
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if (err)
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return err;
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drm_crtc_helper_add(crtc, &komeda_crtc_helper_funcs);
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drm_crtc_vblank_reset(crtc);
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crtc->port = kcrtc->master->of_output_port;
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return 0;
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}
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int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
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{
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int i, err;
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for (i = 0; i < kms->n_crtcs; i++) {
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err = komeda_crtc_add(kms, &kms->crtcs[i]);
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if (err)
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return err;
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}
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return 0;
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}
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@ -10,9 +10,11 @@
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#include <linux/component.h>
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#include <drm/drm_of.h>
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#include "komeda_dev.h"
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#include "komeda_kms.h"
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struct komeda_drv {
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struct komeda_dev *mdev;
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struct komeda_kms_dev *kms;
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};
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static void komeda_unbind(struct device *dev)
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@ -22,6 +24,7 @@ static void komeda_unbind(struct device *dev)
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if (!mdrv)
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return;
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komeda_kms_detach(mdrv->kms);
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komeda_dev_destroy(mdrv->mdev);
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dev_set_drvdata(dev, NULL);
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@ -43,10 +46,19 @@ static int komeda_bind(struct device *dev)
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goto free_mdrv;
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}
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mdrv->kms = komeda_kms_attach(mdrv->mdev);
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if (IS_ERR(mdrv->kms)) {
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err = PTR_ERR(mdrv->kms);
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goto destroy_mdev;
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}
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dev_set_drvdata(dev, mdrv);
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return 0;
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destroy_mdev:
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komeda_dev_destroy(mdrv->mdev);
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free_mdrv:
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devm_kfree(dev, mdrv);
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return err;
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@ -0,0 +1,169 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
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* Author: James.Qian.Wang <james.qian.wang@arm.com>
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*
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*/
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#include <linux/component.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_gem_framebuffer_helper.h>
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#include <drm/drm_gem_cma_helper.h>
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#include <drm/drm_fb_helper.h>
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#include <linux/interrupt.h>
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#include "komeda_dev.h"
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#include "komeda_kms.h"
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#include "komeda_framebuffer.h"
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DEFINE_DRM_GEM_CMA_FOPS(komeda_cma_fops);
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static int komeda_gem_cma_dumb_create(struct drm_file *file,
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struct drm_device *dev,
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struct drm_mode_create_dumb *args)
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{
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u32 alignment = 16; /* TODO get alignment from dev */
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args->pitch = ALIGN(DIV_ROUND_UP(args->width * args->bpp, 8),
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alignment);
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return drm_gem_cma_dumb_create_internal(file, dev, args);
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}
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static struct drm_driver komeda_kms_driver = {
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.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC |
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DRIVER_PRIME,
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.lastclose = drm_fb_helper_lastclose,
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.gem_free_object_unlocked = drm_gem_cma_free_object,
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.gem_vm_ops = &drm_gem_cma_vm_ops,
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.dumb_create = komeda_gem_cma_dumb_create,
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_export = drm_gem_prime_export,
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.gem_prime_import = drm_gem_prime_import,
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.gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
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.gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
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.gem_prime_vmap = drm_gem_cma_prime_vmap,
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.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
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.gem_prime_mmap = drm_gem_cma_prime_mmap,
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.fops = &komeda_cma_fops,
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.name = "komeda",
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.desc = "Arm Komeda Display Processor driver",
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.date = "20181101",
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.major = 0,
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.minor = 1,
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};
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static void komeda_kms_commit_tail(struct drm_atomic_state *old_state)
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{
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struct drm_device *dev = old_state->dev;
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drm_atomic_helper_commit_modeset_disables(dev, old_state);
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drm_atomic_helper_commit_planes(dev, old_state, 0);
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drm_atomic_helper_commit_modeset_enables(dev, old_state);
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drm_atomic_helper_wait_for_flip_done(dev, old_state);
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drm_atomic_helper_commit_hw_done(old_state);
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drm_atomic_helper_cleanup_planes(dev, old_state);
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}
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static const struct drm_mode_config_helper_funcs komeda_mode_config_helpers = {
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.atomic_commit_tail = komeda_kms_commit_tail,
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};
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static const struct drm_mode_config_funcs komeda_mode_config_funcs = {
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.fb_create = komeda_fb_create,
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.atomic_check = drm_atomic_helper_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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static void komeda_kms_mode_config_init(struct komeda_kms_dev *kms,
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struct komeda_dev *mdev)
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{
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struct drm_mode_config *config = &kms->base.mode_config;
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drm_mode_config_init(&kms->base);
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komeda_kms_setup_crtcs(kms, mdev);
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/* Get value from dev */
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config->min_width = 0;
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config->min_height = 0;
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config->max_width = 4096;
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config->max_height = 4096;
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config->allow_fb_modifiers = false;
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config->funcs = &komeda_mode_config_funcs;
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config->helper_private = &komeda_mode_config_helpers;
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}
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struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
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{
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struct komeda_kms_dev *kms = kzalloc(sizeof(*kms), GFP_KERNEL);
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struct drm_device *drm;
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int err;
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if (!kms)
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return ERR_PTR(-ENOMEM);
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drm = &kms->base;
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err = drm_dev_init(drm, &komeda_kms_driver, mdev->dev);
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if (err)
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goto free_kms;
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drm->dev_private = mdev;
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komeda_kms_mode_config_init(kms, mdev);
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err = komeda_kms_add_private_objs(kms, mdev);
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if (err)
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goto cleanup_mode_config;
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err = komeda_kms_add_planes(kms, mdev);
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if (err)
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goto cleanup_mode_config;
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err = drm_vblank_init(drm, kms->n_crtcs);
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if (err)
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goto cleanup_mode_config;
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err = komeda_kms_add_crtcs(kms, mdev);
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if (err)
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goto cleanup_mode_config;
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err = component_bind_all(mdev->dev, kms);
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if (err)
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goto cleanup_mode_config;
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drm_mode_config_reset(drm);
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err = drm_dev_register(drm, 0);
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if (err)
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goto uninstall_irq;
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return kms;
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uninstall_irq:
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drm_irq_uninstall(drm);
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cleanup_mode_config:
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drm_mode_config_cleanup(drm);
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free_kms:
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kfree(kms);
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return ERR_PTR(err);
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}
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void komeda_kms_detach(struct komeda_kms_dev *kms)
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{
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struct drm_device *drm = &kms->base;
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struct komeda_dev *mdev = drm->dev_private;
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drm_dev_unregister(drm);
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component_unbind_all(mdev->dev, drm);
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komeda_kms_cleanup_private_objs(mdev);
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drm_mode_config_cleanup(drm);
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drm->dev_private = NULL;
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drm_dev_put(drm);
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}
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@ -0,0 +1,113 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
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* Author: James.Qian.Wang <james.qian.wang@arm.com>
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*
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*/
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#ifndef _KOMEDA_KMS_H_
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#define _KOMEDA_KMS_H_
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_writeback.h>
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/** struct komeda_plane - komeda instance of drm_plane */
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struct komeda_plane {
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/** @base: &drm_plane */
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struct drm_plane base;
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/**
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* @layer:
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*
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* represents available layer input pipelines for this plane.
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*
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* NOTE:
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* the layer is not for a specific Layer, but indicate a group of
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* Layers with same capabilities.
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*/
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struct komeda_layer *layer;
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};
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/**
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* struct komeda_plane_state
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*
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* The plane_state can be split into two data flow (left/right) and handled
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* by two layers &komeda_plane.layer and &komeda_plane.layer.right
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*/
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struct komeda_plane_state {
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/** @base: &drm_plane_state */
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struct drm_plane_state base;
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/* private properties */
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};
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/**
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* struct komeda_wb_connector
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*/
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struct komeda_wb_connector {
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/** @base: &drm_writeback_connector */
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struct drm_writeback_connector base;
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/** @wb_layer: represents associated writeback pipeline of komeda */
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struct komeda_layer *wb_layer;
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};
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/**
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* struct komeda_crtc
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*/
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struct komeda_crtc {
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/** @base: &drm_crtc */
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struct drm_crtc base;
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/** @master: only master has display output */
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struct komeda_pipeline *master;
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/**
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* @slave: optional
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*
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* Doesn't have its own display output, the handled data flow will
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* merge into the master.
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*/
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struct komeda_pipeline *slave;
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};
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/** struct komeda_crtc_state */
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struct komeda_crtc_state {
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/** @base: &drm_crtc_state */
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struct drm_crtc_state base;
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/* private properties */
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/* computed state which are used by validate/check */
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u32 affected_pipes;
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u32 active_pipes;
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};
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/** struct komeda_kms_dev - for gather KMS related things */
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struct komeda_kms_dev {
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/** @base: &drm_device */
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struct drm_device base;
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/** @n_crtcs: valid numbers of crtcs in &komeda_kms_dev.crtcs */
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int n_crtcs;
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/** @crtcs: crtcs list */
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struct komeda_crtc crtcs[KOMEDA_MAX_PIPELINES];
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};
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#define to_kplane(p) container_of(p, struct komeda_plane, base)
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#define to_kplane_st(p) container_of(p, struct komeda_plane_state, base)
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#define to_kconn(p) container_of(p, struct komeda_wb_connector, base)
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#define to_kcrtc(p) container_of(p, struct komeda_crtc, base)
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#define to_kcrtc_st(p) container_of(p, struct komeda_crtc_state, base)
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#define to_kdev(p) container_of(p, struct komeda_kms_dev, base)
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int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
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int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
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int komeda_kms_add_planes(struct komeda_kms_dev *kms, struct komeda_dev *mdev);
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int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
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struct komeda_dev *mdev);
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void komeda_kms_cleanup_private_objs(struct komeda_dev *mdev);
|
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struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev);
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void komeda_kms_detach(struct komeda_kms_dev *kms);
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#endif /*_KOMEDA_KMS_H_*/
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@ -331,6 +331,9 @@ struct komeda_pipeline_state {
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#define to_improc_st(c) container_of(c, struct komeda_improc_state, base)
|
||||
#define to_ctrlr_st(c) container_of(c, struct komeda_timing_ctrlr_state, base)
|
||||
|
||||
#define priv_to_comp_st(o) container_of(o, struct komeda_component_state, obj)
|
||||
#define priv_to_pipe_st(o) container_of(o, struct komeda_pipeline_state, obj)
|
||||
|
||||
/* pipeline APIs */
|
||||
struct komeda_pipeline *
|
||||
komeda_pipeline_add(struct komeda_dev *mdev, size_t size,
|
||||
|
|
|
|||
|
|
@ -0,0 +1,109 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
|
||||
* Author: James.Qian.Wang <james.qian.wang@arm.com>
|
||||
*
|
||||
*/
|
||||
#include <drm/drm_atomic.h>
|
||||
#include <drm/drm_atomic_helper.h>
|
||||
#include <drm/drm_plane_helper.h>
|
||||
#include "komeda_dev.h"
|
||||
#include "komeda_kms.h"
|
||||
|
||||
static const struct drm_plane_helper_funcs komeda_plane_helper_funcs = {
|
||||
};
|
||||
|
||||
static void komeda_plane_destroy(struct drm_plane *plane)
|
||||
{
|
||||
drm_plane_cleanup(plane);
|
||||
|
||||
kfree(to_kplane(plane));
|
||||
}
|
||||
|
||||
static const struct drm_plane_funcs komeda_plane_funcs = {
|
||||
};
|
||||
|
||||
/* for komeda, which is pipeline can be share between crtcs */
|
||||
static u32 get_possible_crtcs(struct komeda_kms_dev *kms,
|
||||
struct komeda_pipeline *pipe)
|
||||
{
|
||||
struct komeda_crtc *crtc;
|
||||
u32 possible_crtcs = 0;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < kms->n_crtcs; i++) {
|
||||
crtc = &kms->crtcs[i];
|
||||
|
||||
if ((pipe == crtc->master) || (pipe == crtc->slave))
|
||||
possible_crtcs |= BIT(i);
|
||||
}
|
||||
|
||||
return possible_crtcs;
|
||||
}
|
||||
|
||||
/* use Layer0 as primary */
|
||||
static u32 get_plane_type(struct komeda_kms_dev *kms,
|
||||
struct komeda_component *c)
|
||||
{
|
||||
bool is_primary = (c->id == KOMEDA_COMPONENT_LAYER0);
|
||||
|
||||
return is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
|
||||
}
|
||||
|
||||
static int komeda_plane_add(struct komeda_kms_dev *kms,
|
||||
struct komeda_layer *layer)
|
||||
{
|
||||
struct komeda_dev *mdev = kms->base.dev_private;
|
||||
struct komeda_component *c = &layer->base;
|
||||
struct komeda_plane *kplane;
|
||||
struct drm_plane *plane;
|
||||
u32 *formats, n_formats = 0;
|
||||
int err;
|
||||
|
||||
kplane = kzalloc(sizeof(*kplane), GFP_KERNEL);
|
||||
if (!kplane)
|
||||
return -ENOMEM;
|
||||
|
||||
plane = &kplane->base;
|
||||
kplane->layer = layer;
|
||||
|
||||
formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl,
|
||||
layer->layer_type, &n_formats);
|
||||
|
||||
err = drm_universal_plane_init(&kms->base, plane,
|
||||
get_possible_crtcs(kms, c->pipeline),
|
||||
&komeda_plane_funcs,
|
||||
formats, n_formats, NULL,
|
||||
get_plane_type(kms, c),
|
||||
"%s", c->name);
|
||||
|
||||
komeda_put_fourcc_list(formats);
|
||||
|
||||
if (err)
|
||||
goto cleanup;
|
||||
|
||||
drm_plane_helper_add(plane, &komeda_plane_helper_funcs);
|
||||
|
||||
return 0;
|
||||
cleanup:
|
||||
komeda_plane_destroy(plane);
|
||||
return err;
|
||||
}
|
||||
|
||||
int komeda_kms_add_planes(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
|
||||
{
|
||||
struct komeda_pipeline *pipe;
|
||||
int i, j, err;
|
||||
|
||||
for (i = 0; i < mdev->n_pipelines; i++) {
|
||||
pipe = mdev->pipelines[i];
|
||||
|
||||
for (j = 0; j < pipe->n_layers; j++) {
|
||||
err = komeda_plane_add(kms, pipe->layers[j]);
|
||||
if (err)
|
||||
return err;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -0,0 +1,88 @@
|
|||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
|
||||
* Author: James.Qian.Wang <james.qian.wang@arm.com>
|
||||
*
|
||||
*/
|
||||
#include "komeda_dev.h"
|
||||
#include "komeda_kms.h"
|
||||
|
||||
static struct drm_private_state *
|
||||
komeda_pipeline_atomic_duplicate_state(struct drm_private_obj *obj)
|
||||
{
|
||||
struct komeda_pipeline_state *st;
|
||||
|
||||
st = kmemdup(obj->state, sizeof(*st), GFP_KERNEL);
|
||||
if (!st)
|
||||
return NULL;
|
||||
|
||||
st->active_comps = 0;
|
||||
|
||||
__drm_atomic_helper_private_obj_duplicate_state(obj, &st->obj);
|
||||
|
||||
return &st->obj;
|
||||
}
|
||||
|
||||
static void
|
||||
komeda_pipeline_atomic_destroy_state(struct drm_private_obj *obj,
|
||||
struct drm_private_state *state)
|
||||
{
|
||||
kfree(priv_to_pipe_st(state));
|
||||
}
|
||||
|
||||
static const struct drm_private_state_funcs komeda_pipeline_obj_funcs = {
|
||||
.atomic_duplicate_state = komeda_pipeline_atomic_duplicate_state,
|
||||
.atomic_destroy_state = komeda_pipeline_atomic_destroy_state,
|
||||
};
|
||||
|
||||
static int komeda_pipeline_obj_add(struct komeda_kms_dev *kms,
|
||||
struct komeda_pipeline *pipe)
|
||||
{
|
||||
struct komeda_pipeline_state *st;
|
||||
|
||||
st = kzalloc(sizeof(*st), GFP_KERNEL);
|
||||
if (!st)
|
||||
return -ENOMEM;
|
||||
|
||||
st->pipe = pipe;
|
||||
drm_atomic_private_obj_init(&pipe->obj, &st->obj,
|
||||
&komeda_pipeline_obj_funcs);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int komeda_kms_add_private_objs(struct komeda_kms_dev *kms,
|
||||
struct komeda_dev *mdev)
|
||||
{
|
||||
struct komeda_pipeline *pipe;
|
||||
int i, err;
|
||||
|
||||
for (i = 0; i < mdev->n_pipelines; i++) {
|
||||
pipe = mdev->pipelines[i];
|
||||
|
||||
err = komeda_pipeline_obj_add(kms, pipe);
|
||||
if (err)
|
||||
return err;
|
||||
|
||||
/* Add component */
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void komeda_kms_cleanup_private_objs(struct komeda_dev *mdev)
|
||||
{
|
||||
struct komeda_pipeline *pipe;
|
||||
struct komeda_component *c;
|
||||
int i, id;
|
||||
|
||||
for (i = 0; i < mdev->n_pipelines; i++) {
|
||||
pipe = mdev->pipelines[i];
|
||||
dp_for_each_set_bit(id, pipe->avail_comps) {
|
||||
c = komeda_pipeline_get_component(pipe, id);
|
||||
|
||||
drm_atomic_private_obj_fini(&c->obj);
|
||||
}
|
||||
drm_atomic_private_obj_fini(&pipe->obj);
|
||||
}
|
||||
}
|
||||
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