255 lines
6.6 KiB
C
255 lines
6.6 KiB
C
/* exynos_drm_crtc.c
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* Authors:
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* Inki Dae <inki.dae@samsung.com>
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* Joonyoung Shim <jy0922.shim@samsung.com>
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* Seung-Woo Kim <sw0312.kim@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_crtc_helper.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_encoder.h>
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#include "exynos_drm_crtc.h"
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#include "exynos_drm_drv.h"
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#include "exynos_drm_plane.h"
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static void exynos_drm_crtc_atomic_enable(struct drm_crtc *crtc,
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struct drm_crtc_state *old_state)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->enable)
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exynos_crtc->ops->enable(exynos_crtc);
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drm_crtc_vblank_on(crtc);
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}
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static void exynos_drm_crtc_atomic_disable(struct drm_crtc *crtc,
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struct drm_crtc_state *old_state)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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drm_crtc_vblank_off(crtc);
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if (exynos_crtc->ops->disable)
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exynos_crtc->ops->disable(exynos_crtc);
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if (crtc->state->event && !crtc->state->active) {
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spin_lock_irq(&crtc->dev->event_lock);
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drm_crtc_send_vblank_event(crtc, crtc->state->event);
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spin_unlock_irq(&crtc->dev->event_lock);
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crtc->state->event = NULL;
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}
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}
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static int exynos_crtc_atomic_check(struct drm_crtc *crtc,
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struct drm_crtc_state *state)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (!state->enable)
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return 0;
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if (exynos_crtc->ops->atomic_check)
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return exynos_crtc->ops->atomic_check(exynos_crtc, state);
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return 0;
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}
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static void exynos_crtc_atomic_begin(struct drm_crtc *crtc,
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struct drm_crtc_state *old_crtc_state)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->atomic_begin)
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exynos_crtc->ops->atomic_begin(exynos_crtc);
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}
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static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
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struct drm_crtc_state *old_crtc_state)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->atomic_flush)
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exynos_crtc->ops->atomic_flush(exynos_crtc);
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}
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static enum drm_mode_status exynos_crtc_mode_valid(struct drm_crtc *crtc,
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const struct drm_display_mode *mode)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->mode_valid)
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return exynos_crtc->ops->mode_valid(exynos_crtc, mode);
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return MODE_OK;
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}
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static bool exynos_crtc_mode_fixup(struct drm_crtc *crtc,
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const struct drm_display_mode *mode,
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struct drm_display_mode *adjusted_mode)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->mode_fixup)
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return exynos_crtc->ops->mode_fixup(exynos_crtc, mode,
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adjusted_mode);
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return true;
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}
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static const struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
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.mode_valid = exynos_crtc_mode_valid,
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.mode_fixup = exynos_crtc_mode_fixup,
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.atomic_check = exynos_crtc_atomic_check,
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.atomic_begin = exynos_crtc_atomic_begin,
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.atomic_flush = exynos_crtc_atomic_flush,
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.atomic_enable = exynos_drm_crtc_atomic_enable,
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.atomic_disable = exynos_drm_crtc_atomic_disable,
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};
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void exynos_crtc_handle_event(struct exynos_drm_crtc *exynos_crtc)
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{
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struct drm_crtc *crtc = &exynos_crtc->base;
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struct drm_pending_vblank_event *event = crtc->state->event;
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unsigned long flags;
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if (!event)
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return;
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crtc->state->event = NULL;
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WARN_ON(drm_crtc_vblank_get(crtc) != 0);
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spin_lock_irqsave(&crtc->dev->event_lock, flags);
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drm_crtc_arm_vblank_event(crtc, event);
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spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
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}
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static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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drm_crtc_cleanup(crtc);
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kfree(exynos_crtc);
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}
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static int exynos_drm_crtc_enable_vblank(struct drm_crtc *crtc)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->enable_vblank)
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return exynos_crtc->ops->enable_vblank(exynos_crtc);
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return 0;
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}
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static void exynos_drm_crtc_disable_vblank(struct drm_crtc *crtc)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->disable_vblank)
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exynos_crtc->ops->disable_vblank(exynos_crtc);
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}
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static u32 exynos_drm_crtc_get_vblank_counter(struct drm_crtc *crtc)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->get_vblank_counter)
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return exynos_crtc->ops->get_vblank_counter(exynos_crtc);
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return 0;
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}
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static const struct drm_crtc_funcs exynos_crtc_funcs = {
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.set_config = drm_atomic_helper_set_config,
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.page_flip = drm_atomic_helper_page_flip,
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.destroy = exynos_drm_crtc_destroy,
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.reset = drm_atomic_helper_crtc_reset,
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.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
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.enable_vblank = exynos_drm_crtc_enable_vblank,
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.disable_vblank = exynos_drm_crtc_disable_vblank,
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.get_vblank_counter = exynos_drm_crtc_get_vblank_counter,
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};
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struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
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struct drm_plane *plane,
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enum exynos_drm_output_type type,
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const struct exynos_drm_crtc_ops *ops,
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void *ctx)
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{
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struct exynos_drm_crtc *exynos_crtc;
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struct drm_crtc *crtc;
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int ret;
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exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
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if (!exynos_crtc)
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return ERR_PTR(-ENOMEM);
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exynos_crtc->type = type;
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exynos_crtc->ops = ops;
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exynos_crtc->ctx = ctx;
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crtc = &exynos_crtc->base;
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ret = drm_crtc_init_with_planes(drm_dev, crtc, plane, NULL,
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&exynos_crtc_funcs, NULL);
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if (ret < 0)
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goto err_crtc;
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drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
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return exynos_crtc;
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err_crtc:
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plane->funcs->destroy(plane);
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kfree(exynos_crtc);
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return ERR_PTR(ret);
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}
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struct exynos_drm_crtc *exynos_drm_crtc_get_by_type(struct drm_device *drm_dev,
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enum exynos_drm_output_type out_type)
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{
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struct drm_crtc *crtc;
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drm_for_each_crtc(crtc, drm_dev)
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if (to_exynos_crtc(crtc)->type == out_type)
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return to_exynos_crtc(crtc);
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return ERR_PTR(-EPERM);
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}
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int exynos_drm_set_possible_crtcs(struct drm_encoder *encoder,
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enum exynos_drm_output_type out_type)
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{
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struct exynos_drm_crtc *crtc = exynos_drm_crtc_get_by_type(encoder->dev,
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out_type);
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if (IS_ERR(crtc))
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return PTR_ERR(crtc);
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encoder->possible_crtcs = drm_crtc_mask(&crtc->base);
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return 0;
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}
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void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
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{
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struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
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if (exynos_crtc->ops->te_handler)
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exynos_crtc->ops->te_handler(exynos_crtc);
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}
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