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author | james qian wang (Arm Technology China) <james.qian.wang@arm.com> | 2019-01-03 14:41:30 +0300 |
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committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2019-01-14 14:20:11 +0300 |
commit | 61f1c4a8ab7575c0147ae6c0d220f9719fdc741e (patch) | |
tree | 3ab5eeed9de51d000ce5d072dc0c78aece67dd05 /drivers/gpu/drm/arm/display/komeda/komeda_crtc.c | |
parent | c46c24bb6b115b0d74789cf089894384875189c7 (diff) | |
download | linux-61f1c4a8ab7575c0147ae6c0d220f9719fdc741e.tar.xz |
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>
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_crtc.c')
-rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_crtc.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c new file mode 100644 index 000000000000..5bb5a55f6b31 --- /dev/null +++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c @@ -0,0 +1,106 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) COPYRIGHT 2018 ARM Limited. All rights reserved. + * Author: James.Qian.Wang <james.qian.wang@arm.com> + * + */ +#include <linux/clk.h> +#include <linux/spinlock.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_plane_helper.h> +#include <drm/drm_crtc_helper.h> +#include <linux/pm_runtime.h> +#include "komeda_dev.h" +#include "komeda_kms.h" + +struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = { +}; + +static const struct drm_crtc_funcs komeda_crtc_funcs = { +}; + +int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms, + struct komeda_dev *mdev) +{ + struct komeda_crtc *crtc; + struct komeda_pipeline *master; + char str[16]; + int i; + + kms->n_crtcs = 0; + + for (i = 0; i < mdev->n_pipelines; i++) { + crtc = &kms->crtcs[kms->n_crtcs]; + master = mdev->pipelines[i]; + + crtc->master = master; + crtc->slave = NULL; + + if (crtc->slave) + sprintf(str, "pipe-%d", crtc->slave->id); + else + sprintf(str, "None"); + + DRM_INFO("crtc%d: master(pipe-%d) slave(%s) output: %s.\n", + kms->n_crtcs, master->id, str, + master->of_output_dev ? + master->of_output_dev->full_name : "None"); + + kms->n_crtcs++; + } + + return 0; +} + +static struct drm_plane * +get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc) +{ + struct komeda_plane *kplane; + struct drm_plane *plane; + + drm_for_each_plane(plane, &kms->base) { + if (plane->type != DRM_PLANE_TYPE_PRIMARY) + continue; + + kplane = to_kplane(plane); + /* only master can be primary */ + if (kplane->layer->base.pipeline == crtc->master) + return plane; + } + + return NULL; +} + +static int komeda_crtc_add(struct komeda_kms_dev *kms, + struct komeda_crtc *kcrtc) +{ + struct drm_crtc *crtc = &kcrtc->base; + int err; + + err = drm_crtc_init_with_planes(&kms->base, crtc, + get_crtc_primary(kms, kcrtc), NULL, + &komeda_crtc_funcs, NULL); + if (err) + return err; + + drm_crtc_helper_add(crtc, &komeda_crtc_helper_funcs); + drm_crtc_vblank_reset(crtc); + + crtc->port = kcrtc->master->of_output_port; + + return 0; +} + +int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev) +{ + int i, err; + + for (i = 0; i < kms->n_crtcs; i++) { + err = komeda_crtc_add(kms, &kms->crtcs[i]); + if (err) + return err; + } + + return 0; +} |