| /* |
| * drivers/staging/omapdrm/omap_crtc.c |
| * |
| * Copyright (C) 2011 Texas Instruments |
| * Author: Rob Clark <rob@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 as published by |
| * the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include "omap_drv.h" |
| |
| #include "drm_mode.h" |
| #include "drm_crtc.h" |
| #include "drm_crtc_helper.h" |
| |
| #define to_omap_crtc(x) container_of(x, struct omap_crtc, base) |
| |
| struct omap_crtc { |
| struct drm_crtc base; |
| struct omap_overlay *ovl; |
| struct omap_overlay_info info; |
| int id; |
| |
| /* if there is a pending flip, this will be non-null: */ |
| struct drm_pending_vblank_event *event; |
| }; |
| |
| /* push changes down to dss2 */ |
| static int commit(struct drm_crtc *crtc) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| struct omap_overlay *ovl = omap_crtc->ovl; |
| struct omap_overlay_info *info = &omap_crtc->info; |
| int ret; |
| |
| DBG("%s", omap_crtc->ovl->name); |
| DBG("%dx%d -> %dx%d (%d)", info->width, info->height, info->out_width, |
| info->out_height, info->screen_width); |
| DBG("%d,%d %08x", info->pos_x, info->pos_y, info->paddr); |
| |
| /* NOTE: do we want to do this at all here, or just wait |
| * for dpms(ON) since other CRTC's may not have their mode |
| * set yet, so fb dimensions may still change.. |
| */ |
| ret = ovl->set_overlay_info(ovl, info); |
| if (ret) { |
| dev_err(dev->dev, "could not set overlay info\n"); |
| return ret; |
| } |
| |
| /* our encoder doesn't necessarily get a commit() after this, in |
| * particular in the dpms() and mode_set_base() cases, so force the |
| * manager to update: |
| * |
| * could this be in the encoder somehow? |
| */ |
| if (ovl->manager) { |
| ret = ovl->manager->apply(ovl->manager); |
| if (ret) { |
| dev_err(dev->dev, "could not apply settings\n"); |
| return ret; |
| } |
| } |
| |
| if (info->enabled) { |
| omap_framebuffer_flush(crtc->fb, crtc->x, crtc->y, |
| crtc->fb->width, crtc->fb->height); |
| } |
| |
| return 0; |
| } |
| |
| /* update parameters that are dependent on the framebuffer dimensions and |
| * position within the fb that this crtc scans out from. This is called |
| * when framebuffer dimensions or x,y base may have changed, either due |
| * to our mode, or a change in another crtc that is scanning out of the |
| * same fb. |
| */ |
| static void update_scanout(struct drm_crtc *crtc) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| dma_addr_t paddr; |
| unsigned int screen_width; |
| |
| omap_framebuffer_get_buffer(crtc->fb, crtc->x, crtc->y, |
| NULL, &paddr, &screen_width); |
| |
| DBG("%s: %d,%d: %08x (%d)", omap_crtc->ovl->name, |
| crtc->x, crtc->y, (u32)paddr, screen_width); |
| |
| omap_crtc->info.paddr = paddr; |
| omap_crtc->info.screen_width = screen_width; |
| } |
| |
| static void omap_crtc_gamma_set(struct drm_crtc *crtc, |
| u16 *red, u16 *green, u16 *blue, uint32_t start, uint32_t size) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| DBG("%s", omap_crtc->ovl->name); |
| } |
| |
| static void omap_crtc_destroy(struct drm_crtc *crtc) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| DBG("%s", omap_crtc->ovl->name); |
| drm_crtc_cleanup(crtc); |
| kfree(omap_crtc); |
| } |
| |
| static void omap_crtc_dpms(struct drm_crtc *crtc, int mode) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| |
| DBG("%s: %d", omap_crtc->ovl->name, mode); |
| |
| if (mode == DRM_MODE_DPMS_ON) { |
| update_scanout(crtc); |
| omap_crtc->info.enabled = true; |
| } else { |
| omap_crtc->info.enabled = false; |
| } |
| |
| WARN_ON(commit(crtc)); |
| } |
| |
| static bool omap_crtc_mode_fixup(struct drm_crtc *crtc, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adjusted_mode) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| DBG("%s", omap_crtc->ovl->name); |
| return true; |
| } |
| |
| static int omap_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 omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| |
| DBG("%s: %d,%d: %dx%d", omap_crtc->ovl->name, x, y, |
| mode->hdisplay, mode->vdisplay); |
| |
| /* just use adjusted mode */ |
| mode = adjusted_mode; |
| |
| omap_crtc->info.width = mode->hdisplay; |
| omap_crtc->info.height = mode->vdisplay; |
| omap_crtc->info.out_width = mode->hdisplay; |
| omap_crtc->info.out_height = mode->vdisplay; |
| omap_crtc->info.color_mode = OMAP_DSS_COLOR_RGB24U; |
| omap_crtc->info.rotation_type = OMAP_DSS_ROT_DMA; |
| omap_crtc->info.rotation = OMAP_DSS_ROT_0; |
| omap_crtc->info.global_alpha = 0xff; |
| omap_crtc->info.mirror = 0; |
| omap_crtc->info.mirror = 0; |
| omap_crtc->info.pos_x = 0; |
| omap_crtc->info.pos_y = 0; |
| #if 0 /* re-enable when these are available in DSS2 driver */ |
| omap_crtc->info.zorder = 3; /* GUI in the front, video behind */ |
| omap_crtc->info.min_x_decim = 1; |
| omap_crtc->info.max_x_decim = 1; |
| omap_crtc->info.min_y_decim = 1; |
| omap_crtc->info.max_y_decim = 1; |
| #endif |
| |
| update_scanout(crtc); |
| |
| return 0; |
| } |
| |
| static void omap_crtc_prepare(struct drm_crtc *crtc) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| struct omap_overlay *ovl = omap_crtc->ovl; |
| |
| DBG("%s", omap_crtc->ovl->name); |
| |
| ovl->get_overlay_info(ovl, &omap_crtc->info); |
| |
| omap_crtc_dpms(crtc, DRM_MODE_DPMS_OFF); |
| } |
| |
| static void omap_crtc_commit(struct drm_crtc *crtc) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| DBG("%s", omap_crtc->ovl->name); |
| omap_crtc_dpms(crtc, DRM_MODE_DPMS_ON); |
| } |
| |
| static int omap_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, |
| struct drm_framebuffer *old_fb) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| |
| DBG("%s %d,%d: fb=%p", omap_crtc->ovl->name, x, y, old_fb); |
| |
| update_scanout(crtc); |
| |
| return commit(crtc); |
| } |
| |
| static void omap_crtc_load_lut(struct drm_crtc *crtc) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| DBG("%s", omap_crtc->ovl->name); |
| } |
| |
| static void page_flip_cb(void *arg) |
| { |
| struct drm_crtc *crtc = arg; |
| struct drm_device *dev = crtc->dev; |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| struct drm_pending_vblank_event *event = omap_crtc->event; |
| struct timeval now; |
| unsigned long flags; |
| |
| WARN_ON(!event); |
| |
| omap_crtc->event = NULL; |
| |
| update_scanout(crtc); |
| WARN_ON(commit(crtc)); |
| |
| /* wakeup userspace */ |
| /* TODO: this should happen *after* flip in vsync IRQ handler */ |
| if (event) { |
| spin_lock_irqsave(&dev->event_lock, flags); |
| event->event.sequence = drm_vblank_count_and_time( |
| dev, omap_crtc->id, &now); |
| event->event.tv_sec = now.tv_sec; |
| event->event.tv_usec = now.tv_usec; |
| list_add_tail(&event->base.link, |
| &event->base.file_priv->event_list); |
| wake_up_interruptible(&event->base.file_priv->event_wait); |
| spin_unlock_irqrestore(&dev->event_lock, flags); |
| } |
| } |
| |
| static int omap_crtc_page_flip_locked(struct drm_crtc *crtc, |
| struct drm_framebuffer *fb, |
| struct drm_pending_vblank_event *event) |
| { |
| struct drm_device *dev = crtc->dev; |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| |
| DBG("%d -> %d", crtc->fb ? crtc->fb->base.id : -1, fb->base.id); |
| |
| if (omap_crtc->event) { |
| dev_err(dev->dev, "already a pending flip\n"); |
| return -EINVAL; |
| } |
| |
| crtc->fb = fb; |
| omap_crtc->event = event; |
| |
| omap_gem_op_async(omap_framebuffer_bo(fb), OMAP_GEM_READ, |
| page_flip_cb, crtc); |
| |
| return 0; |
| } |
| |
| static const struct drm_crtc_funcs omap_crtc_funcs = { |
| .gamma_set = omap_crtc_gamma_set, |
| .set_config = drm_crtc_helper_set_config, |
| .destroy = omap_crtc_destroy, |
| .page_flip = omap_crtc_page_flip_locked, |
| }; |
| |
| static const struct drm_crtc_helper_funcs omap_crtc_helper_funcs = { |
| .dpms = omap_crtc_dpms, |
| .mode_fixup = omap_crtc_mode_fixup, |
| .mode_set = omap_crtc_mode_set, |
| .prepare = omap_crtc_prepare, |
| .commit = omap_crtc_commit, |
| .mode_set_base = omap_crtc_mode_set_base, |
| .load_lut = omap_crtc_load_lut, |
| }; |
| |
| struct omap_overlay *omap_crtc_get_overlay(struct drm_crtc *crtc) |
| { |
| struct omap_crtc *omap_crtc = to_omap_crtc(crtc); |
| return omap_crtc->ovl; |
| } |
| |
| /* initialize crtc */ |
| struct drm_crtc *omap_crtc_init(struct drm_device *dev, |
| struct omap_overlay *ovl, int id) |
| { |
| struct drm_crtc *crtc = NULL; |
| struct omap_crtc *omap_crtc = kzalloc(sizeof(*omap_crtc), GFP_KERNEL); |
| |
| DBG("%s", ovl->name); |
| |
| if (!omap_crtc) { |
| dev_err(dev->dev, "could not allocate CRTC\n"); |
| goto fail; |
| } |
| |
| omap_crtc->ovl = ovl; |
| omap_crtc->id = id; |
| crtc = &omap_crtc->base; |
| drm_crtc_init(dev, crtc, &omap_crtc_funcs); |
| drm_crtc_helper_add(crtc, &omap_crtc_helper_funcs); |
| |
| return crtc; |
| |
| fail: |
| if (crtc) { |
| omap_crtc_destroy(crtc); |
| } |
| return NULL; |
| } |