--- /dev/null
+/* 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>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <drm/drmP.h>
+#include <drm/drm_crtc_helper.h>
+
+#include "exynos_drm_crtc.h"
+#include "exynos_drm_drv.h"
+#include "exynos_drm_encoder.h"
+#include "exynos_drm_plane.h"
+
+static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
+{
+ struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+
+ DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
+
+ if (exynos_crtc->dpms == mode) {
+ DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
+ return;
+ }
+
+ if (mode > DRM_MODE_DPMS_ON) {
+ /* wait for the completion of page flip. */
+ if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
+ (exynos_crtc->event == NULL), HZ/20))
+ exynos_crtc->event = NULL;
+ drm_crtc_vblank_off(crtc);
+ }
+
+ if (exynos_crtc->ops->dpms)
+ exynos_crtc->ops->dpms(exynos_crtc, mode);
+
+ exynos_crtc->dpms = mode;
+
+ if (mode == DRM_MODE_DPMS_ON)
+ drm_crtc_vblank_on(crtc);
+}
+
+static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
+{
+ /* drm framework doesn't check NULL. */
+}
+
+static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
+{
+ struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+ struct exynos_drm_plane *exynos_plane = to_exynos_plane(crtc->primary);
+
+ exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
+
+ if (exynos_crtc->ops->win_commit)
+ exynos_crtc->ops->win_commit(exynos_crtc, exynos_plane->zpos);
+
+ if (exynos_crtc->ops->commit)
+ exynos_crtc->ops->commit(exynos_crtc);
+}
+
+static bool
+exynos_drm_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 int
+exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
+ struct drm_display_mode *adjusted_mode, int x, int y,
+ struct drm_framebuffer *old_fb)
+{
+ struct drm_framebuffer *fb = crtc->primary->fb;
+ unsigned int crtc_w;
+ unsigned int crtc_h;
+ int ret;
+
+ /*
+ * copy the mode data adjusted by mode_fixup() into crtc->mode
+ * so that hardware can be seet to proper mode.
+ */
+ memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode));
+
+ ret = exynos_check_plane(crtc->primary, fb);
+ if (ret < 0)
+ return ret;
+
+ crtc_w = fb->width - x;
+ crtc_h = fb->height - y;
+ exynos_plane_mode_set(crtc->primary, crtc, fb, 0, 0,
+ crtc_w, crtc_h, x, y, crtc_w, crtc_h);
+
+ return 0;
+}
+
+static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
+ struct drm_framebuffer *old_fb)
+{
+ struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+ struct drm_framebuffer *fb = crtc->primary->fb;
+ unsigned int crtc_w;
+ unsigned int crtc_h;
+
+ /* when framebuffer changing is requested, crtc's dpms should be on */
+ if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
+ DRM_ERROR("failed framebuffer changing request.\n");
+ return -EPERM;
+ }
+
+ crtc_w = fb->width - x;
+ crtc_h = fb->height - y;
+
+ return exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
+ crtc_w, crtc_h, x, y, crtc_w, crtc_h);
+}
+
+static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
+{
+ struct drm_plane *plane;
+ int ret;
+
+ exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
+
+ drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) {
+ if (plane->crtc != crtc)
+ continue;
+
+ ret = plane->funcs->disable_plane(plane);
+ if (ret)
+ DRM_ERROR("Failed to disable plane %d\n", ret);
+ }
+}
+
+static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
+ .dpms = exynos_drm_crtc_dpms,
+ .prepare = exynos_drm_crtc_prepare,
+ .commit = exynos_drm_crtc_commit,
+ .mode_fixup = exynos_drm_crtc_mode_fixup,
+ .mode_set = exynos_drm_crtc_mode_set,
+ .mode_set_base = exynos_drm_crtc_mode_set_base,
+ .disable = exynos_drm_crtc_disable,
+};
+
+static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
+ struct drm_framebuffer *fb,
+ struct drm_pending_vblank_event *event,
+ uint32_t page_flip_flags)
+{
+ struct drm_device *dev = crtc->dev;
+ struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+ struct drm_framebuffer *old_fb = crtc->primary->fb;
+ unsigned int crtc_w, crtc_h;
+ int ret;
+
+ /* when the page flip is requested, crtc's dpms should be on */
+ if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
+ DRM_ERROR("failed page flip request.\n");
+ return -EINVAL;
+ }
+
+ if (!event)
+ return -EINVAL;
+
+ spin_lock_irq(&dev->event_lock);
+ if (exynos_crtc->event) {
+ ret = -EBUSY;
+ goto out;
+ }
+
+ ret = drm_vblank_get(dev, exynos_crtc->pipe);
+ if (ret) {
+ DRM_DEBUG("failed to acquire vblank counter\n");
+ goto out;
+ }
+
+ exynos_crtc->event = event;
+ spin_unlock_irq(&dev->event_lock);
+
+ /*
+ * the pipe from user always is 0 so we can set pipe number
+ * of current owner to event.
+ */
+ event->pipe = exynos_crtc->pipe;
+
+ crtc->primary->fb = fb;
+ crtc_w = fb->width - crtc->x;
+ crtc_h = fb->height - crtc->y;
+ ret = exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
+ crtc_w, crtc_h, crtc->x, crtc->y,
+ crtc_w, crtc_h);
+ if (ret) {
+ crtc->primary->fb = old_fb;
+ spin_lock_irq(&dev->event_lock);
+ exynos_crtc->event = NULL;
+ drm_vblank_put(dev, exynos_crtc->pipe);
+ spin_unlock_irq(&dev->event_lock);
+ return ret;
+ }
+
+ return 0;
+
+out:
+ spin_unlock_irq(&dev->event_lock);
+ return ret;
+}
+
+static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
+{
+ struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
+ struct exynos_drm_private *private = crtc->dev->dev_private;
+
+ private->crtc[exynos_crtc->pipe] = NULL;
+
+ drm_crtc_cleanup(crtc);
+ kfree(exynos_crtc);
+}
+
+static struct drm_crtc_funcs exynos_crtc_funcs = {
+ .set_config = drm_crtc_helper_set_config,
+ .page_flip = exynos_drm_crtc_page_flip,
+ .destroy = exynos_drm_crtc_destroy,
+};
+
+struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
+ struct drm_plane *plane,
+ int pipe,
+ enum exynos_drm_output_type type,
+ const struct exynos_drm_crtc_ops *ops,
+ void *ctx)
+{
+ struct exynos_drm_crtc *exynos_crtc;
+ struct exynos_drm_private *private = drm_dev->dev_private;
+ struct drm_crtc *crtc;
+ int ret;
+
+ exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
+ if (!exynos_crtc)
+ return ERR_PTR(-ENOMEM);
+
+ init_waitqueue_head(&exynos_crtc->pending_flip_queue);
+
+ exynos_crtc->dpms = DRM_MODE_DPMS_OFF;
+ exynos_crtc->pipe = pipe;
+ exynos_crtc->type = type;
+ exynos_crtc->ops = ops;
+ exynos_crtc->ctx = ctx;
+
+ crtc = &exynos_crtc->base;
+
+ private->crtc[pipe] = crtc;
+
+ ret = drm_crtc_init_with_planes(drm_dev, crtc, plane, NULL,
+ &exynos_crtc_funcs);
+ 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);
+}
+
+int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
+{
+ struct exynos_drm_private *private = dev->dev_private;
+ struct exynos_drm_crtc *exynos_crtc =
+ to_exynos_crtc(private->crtc[pipe]);
+
+ if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
+ return -EPERM;
+
+ if (exynos_crtc->ops->enable_vblank)
+ exynos_crtc->ops->enable_vblank(exynos_crtc);
+
+ return 0;
+}
+
+void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
+{
+ struct exynos_drm_private *private = dev->dev_private;
+ struct exynos_drm_crtc *exynos_crtc =
+ to_exynos_crtc(private->crtc[pipe]);
+
+ if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
+ return;
+
+ if (exynos_crtc->ops->disable_vblank)
+ exynos_crtc->ops->disable_vblank(exynos_crtc);
+}
+
+void exynos_drm_crtc_finish_pageflip(struct drm_device *dev, int pipe)
+{
+ struct exynos_drm_private *dev_priv = dev->dev_private;
+ struct drm_crtc *drm_crtc = dev_priv->crtc[pipe];
+ struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(drm_crtc);
+ unsigned long flags;
+
+ spin_lock_irqsave(&dev->event_lock, flags);
+ if (exynos_crtc->event) {
+
+ drm_send_vblank_event(dev, -1, exynos_crtc->event);
+ drm_vblank_put(dev, pipe);
+ wake_up(&exynos_crtc->pending_flip_queue);
+
+ }
+
+ exynos_crtc->event = NULL;
+ spin_unlock_irqrestore(&dev->event_lock, flags);
+}
+
+void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb)
+{
+ struct exynos_drm_crtc *exynos_crtc;
+ struct drm_device *dev = fb->dev;
+ struct drm_crtc *crtc;
+
+ /*
+ * make sure that overlay data are updated to real hardware
+ * for all encoders.
+ */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
+ exynos_crtc = to_exynos_crtc(crtc);
+
+ /*
+ * wait for vblank interrupt
+ * - this makes sure that overlay data are updated to
+ * real hardware.
+ */
+ if (exynos_crtc->ops->wait_for_vblank)
+ exynos_crtc->ops->wait_for_vblank(exynos_crtc);
+ }
+}
+
+int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
+ unsigned int out_type)
+{
+ struct drm_crtc *crtc;
+
+ list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
+ struct exynos_drm_crtc *exynos_crtc;
+
+ exynos_crtc = to_exynos_crtc(crtc);
+ if (exynos_crtc->type == out_type)
+ return exynos_crtc->pipe;
+ }
+
+ return -EPERM;
+}
+
+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);
+}
Code Review / kvmfornfv.git / blobdiff