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// SPDX-License-Identifier: GPL-2.0-or-later
/* exynos_drm_crtc.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Authors:
* Inki Dae <inki.dae@samsung.com>
* Joonyoung Shim <jy0922.shim@samsung.com>
* Seung-Woo Kim <sw0312.kim@samsung.com>
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_encoder.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
#include "exynos_drm_crtc.h"
#include "exynos_drm_drv.h"
#include "exynos_drm_plane.h"
static void exynos_drm_crtc_atomic_enable(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->atomic_enable)
exynos_crtc->ops->atomic_enable(exynos_crtc);
drm_crtc_vblank_on(crtc);
}
static void exynos_drm_crtc_atomic_disable(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
drm_crtc_vblank_off(crtc);
if (exynos_crtc->ops->atomic_disable)
exynos_crtc->ops->atomic_disable(exynos_crtc);
spin_lock_irq(&crtc->dev->event_lock);
if (crtc->state->event && !crtc->state->active) {
drm_crtc_send_vblank_event(crtc, crtc->state->event);
crtc->state->event = NULL;
}
spin_unlock_irq(&crtc->dev->event_lock);
}
static int exynos_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (!state->enable)
return 0;
if (exynos_crtc->ops->atomic_check)
return exynos_crtc->ops->atomic_check(exynos_crtc, state);
return 0;
}
static void exynos_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->atomic_begin)
exynos_crtc->ops->atomic_begin(exynos_crtc);
}
static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_crtc_state)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->atomic_flush)
exynos_crtc->ops->atomic_flush(exynos_crtc);
}
static enum drm_mode_status exynos_crtc_mode_valid(struct drm_crtc *crtc,
const struct drm_display_mode *mode)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->mode_valid)
return exynos_crtc->ops->mode_valid(exynos_crtc, mode);
return MODE_OK;
}
static bool exynos_crtc_mode_fixup(struct drm_crtc *crtc,
const struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->mode_fixup)
return exynos_crtc->ops->mode_fixup(exynos_crtc, mode,
adjusted_mode);
return true;
}
static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
.mode_valid = exynos_crtc_mode_valid,
.mode_fixup = exynos_crtc_mode_fixup,
.atomic_check = exynos_crtc_atomic_check,
.atomic_begin = exynos_crtc_atomic_begin,
.atomic_flush = exynos_crtc_atomic_flush,
.atomic_enable = exynos_drm_crtc_atomic_enable,
.atomic_disable = exynos_drm_crtc_atomic_disable,
};
void exynos_crtc_handle_event(struct exynos_drm_crtc *exynos_crtc)
{
struct drm_crtc *crtc = &exynos_crtc->base;
struct drm_pending_vblank_event *event = crtc->state->event;
unsigned long flags;
if (!event)
return;
crtc->state->event = NULL;
WARN_ON(drm_crtc_vblank_get(crtc) != 0);
spin_lock_irqsave(&crtc->dev->event_lock, flags);
drm_crtc_arm_vblank_event(crtc, event);
spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
}
static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
drm_crtc_cleanup(crtc);
kfree(exynos_crtc);
}
static int exynos_drm_crtc_enable_vblank(struct drm_crtc *crtc)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->enable_vblank)
return exynos_crtc->ops->enable_vblank(exynos_crtc);
return 0;
}
static void exynos_drm_crtc_disable_vblank(struct drm_crtc *crtc)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->disable_vblank)
exynos_crtc->ops->disable_vblank(exynos_crtc);
}
static const struct drm_crtc_funcs exynos_crtc_funcs = {
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
.destroy = exynos_drm_crtc_destroy,
.reset = drm_atomic_helper_crtc_reset,
.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
.enable_vblank = exynos_drm_crtc_enable_vblank,
.disable_vblank = exynos_drm_crtc_disable_vblank,
};
struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
struct drm_plane *plane,
enum exynos_drm_output_type type,
const struct exynos_drm_crtc_ops *ops,
void *ctx)
{
struct exynos_drm_crtc *exynos_crtc;
struct drm_crtc *crtc;
int ret;
exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
if (!exynos_crtc)
return ERR_PTR(-ENOMEM);
exynos_crtc->type = type;
exynos_crtc->ops = ops;
exynos_crtc->ctx = ctx;
crtc = &exynos_crtc->base;
ret = drm_crtc_init_with_planes(drm_dev, crtc, plane, NULL,
&exynos_crtc_funcs, NULL);
if (ret < 0)
goto err_crtc;
drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
return exynos_crtc;
err_crtc:
plane->funcs->destroy(plane);
kfree(exynos_crtc);
return ERR_PTR(ret);
}
struct exynos_drm_crtc *exynos_drm_crtc_get_by_type(struct drm_device *drm_dev,
enum exynos_drm_output_type out_type)
{
struct drm_crtc *crtc;
drm_for_each_crtc(crtc, drm_dev)
if (to_exynos_crtc(crtc)->type == out_type)
return to_exynos_crtc(crtc);
return ERR_PTR(-ENODEV);
}
int exynos_drm_set_possible_crtcs(struct drm_encoder *encoder,
enum exynos_drm_output_type out_type)
{
struct exynos_drm_crtc *crtc = exynos_drm_crtc_get_by_type(encoder->dev,
out_type);
if (IS_ERR(crtc))
return PTR_ERR(crtc);
encoder->possible_crtcs = drm_crtc_mask(&crtc->base);
return 0;
}
void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
{
struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
if (exynos_crtc->ops->te_handler)
exynos_crtc->ops->te_handler(exynos_crtc);
}
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