diff options
Diffstat (limited to 'drivers/staging/omapdrm/omap_crtc.c')
| -rw-r--r-- | drivers/staging/omapdrm/omap_crtc.c | 656 |
1 files changed, 0 insertions, 656 deletions
diff --git a/drivers/staging/omapdrm/omap_crtc.c b/drivers/staging/omapdrm/omap_crtc.c deleted file mode 100644 index 32109c09357c..000000000000 --- a/drivers/staging/omapdrm/omap_crtc.c +++ /dev/null @@ -1,656 +0,0 @@ -/* - * 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/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 drm_plane *plane; - - const char *name; - int pipe; - enum omap_channel channel; - struct omap_overlay_manager_info info; - - /* - * Temporary: eventually this will go away, but it is needed - * for now to keep the output's happy. (They only need - * mgr->id.) Eventually this will be replaced w/ something - * more common-panel-framework-y - */ - struct omap_overlay_manager mgr; - - struct omap_video_timings timings; - bool enabled; - bool full_update; - - struct omap_drm_apply apply; - - struct omap_drm_irq apply_irq; - struct omap_drm_irq error_irq; - - /* list of in-progress apply's: */ - struct list_head pending_applies; - - /* list of queued apply's: */ - struct list_head queued_applies; - - /* for handling queued and in-progress applies: */ - struct work_struct apply_work; - - /* if there is a pending flip, these will be non-null: */ - struct drm_pending_vblank_event *event; - struct drm_framebuffer *old_fb; - - /* for handling page flips without caring about what - * the callback is called from. Possibly we should just - * make omap_gem always call the cb from the worker so - * we don't have to care about this.. - * - * XXX maybe fold into apply_work?? - */ - struct work_struct page_flip_work; -}; - -/* - * Manager-ops, callbacks from output when they need to configure - * the upstream part of the video pipe. - * - * Most of these we can ignore until we add support for command-mode - * panels.. for video-mode the crtc-helpers already do an adequate - * job of sequencing the setup of the video pipe in the proper order - */ - -/* we can probably ignore these until we support command-mode panels: */ -static void omap_crtc_start_update(struct omap_overlay_manager *mgr) -{ -} - -static int omap_crtc_enable(struct omap_overlay_manager *mgr) -{ - return 0; -} - -static void omap_crtc_disable(struct omap_overlay_manager *mgr) -{ -} - -static void omap_crtc_set_timings(struct omap_overlay_manager *mgr, - const struct omap_video_timings *timings) -{ - struct omap_crtc *omap_crtc = container_of(mgr, struct omap_crtc, mgr); - DBG("%s", omap_crtc->name); - omap_crtc->timings = *timings; - omap_crtc->full_update = true; -} - -static void omap_crtc_set_lcd_config(struct omap_overlay_manager *mgr, - const struct dss_lcd_mgr_config *config) -{ - struct omap_crtc *omap_crtc = container_of(mgr, struct omap_crtc, mgr); - DBG("%s", omap_crtc->name); - dispc_mgr_set_lcd_config(omap_crtc->channel, config); -} - -static int omap_crtc_register_framedone_handler( - struct omap_overlay_manager *mgr, - void (*handler)(void *), void *data) -{ - return 0; -} - -static void omap_crtc_unregister_framedone_handler( - struct omap_overlay_manager *mgr, - void (*handler)(void *), void *data) -{ -} - -static const struct dss_mgr_ops mgr_ops = { - .start_update = omap_crtc_start_update, - .enable = omap_crtc_enable, - .disable = omap_crtc_disable, - .set_timings = omap_crtc_set_timings, - .set_lcd_config = omap_crtc_set_lcd_config, - .register_framedone_handler = omap_crtc_register_framedone_handler, - .unregister_framedone_handler = omap_crtc_unregister_framedone_handler, -}; - -/* - * CRTC funcs: - */ - -static void omap_crtc_destroy(struct drm_crtc *crtc) -{ - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - - DBG("%s", omap_crtc->name); - - WARN_ON(omap_crtc->apply_irq.registered); - omap_irq_unregister(crtc->dev, &omap_crtc->error_irq); - - omap_crtc->plane->funcs->destroy(omap_crtc->plane); - drm_crtc_cleanup(crtc); - - kfree(omap_crtc); -} - -static void omap_crtc_dpms(struct drm_crtc *crtc, int mode) -{ - struct omap_drm_private *priv = crtc->dev->dev_private; - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - bool enabled = (mode == DRM_MODE_DPMS_ON); - int i; - - DBG("%s: %d", omap_crtc->name, mode); - - if (enabled != omap_crtc->enabled) { - omap_crtc->enabled = enabled; - omap_crtc->full_update = true; - omap_crtc_apply(crtc, &omap_crtc->apply); - - /* also enable our private plane: */ - WARN_ON(omap_plane_dpms(omap_crtc->plane, mode)); - - /* and any attached overlay planes: */ - for (i = 0; i < priv->num_planes; i++) { - struct drm_plane *plane = priv->planes[i]; - if (plane->crtc == crtc) - WARN_ON(omap_plane_dpms(plane, mode)); - } - } -} - -static bool omap_crtc_mode_fixup(struct drm_crtc *crtc, - const struct drm_display_mode *mode, - struct drm_display_mode *adjusted_mode) -{ - 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); - - mode = adjusted_mode; - - DBG("%s: set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x", - omap_crtc->name, mode->base.id, mode->name, - mode->vrefresh, mode->clock, - mode->hdisplay, mode->hsync_start, - mode->hsync_end, mode->htotal, - mode->vdisplay, mode->vsync_start, - mode->vsync_end, mode->vtotal, - mode->type, mode->flags); - - copy_timings_drm_to_omap(&omap_crtc->timings, mode); - omap_crtc->full_update = true; - - return omap_plane_mode_set(omap_crtc->plane, crtc, crtc->fb, - 0, 0, mode->hdisplay, mode->vdisplay, - x << 16, y << 16, - mode->hdisplay << 16, mode->vdisplay << 16, - NULL, NULL); -} - -static void omap_crtc_prepare(struct drm_crtc *crtc) -{ - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - DBG("%s", omap_crtc->name); - 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->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); - struct drm_plane *plane = omap_crtc->plane; - struct drm_display_mode *mode = &crtc->mode; - - return omap_plane_mode_set(plane, crtc, crtc->fb, - 0, 0, mode->hdisplay, mode->vdisplay, - x << 16, y << 16, - mode->hdisplay << 16, mode->vdisplay << 16, - NULL, NULL); -} - -static void omap_crtc_load_lut(struct drm_crtc *crtc) -{ -} - -static void vblank_cb(void *arg) -{ - struct drm_crtc *crtc = arg; - struct drm_device *dev = crtc->dev; - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - unsigned long flags; - - spin_lock_irqsave(&dev->event_lock, flags); - - /* wakeup userspace */ - if (omap_crtc->event) - drm_send_vblank_event(dev, omap_crtc->pipe, omap_crtc->event); - - omap_crtc->event = NULL; - omap_crtc->old_fb = NULL; - - spin_unlock_irqrestore(&dev->event_lock, flags); -} - -static void page_flip_worker(struct work_struct *work) -{ - struct omap_crtc *omap_crtc = - container_of(work, struct omap_crtc, page_flip_work); - struct drm_crtc *crtc = &omap_crtc->base; - struct drm_device *dev = crtc->dev; - struct drm_display_mode *mode = &crtc->mode; - struct drm_gem_object *bo; - - mutex_lock(&dev->mode_config.mutex); - omap_plane_mode_set(omap_crtc->plane, crtc, crtc->fb, - 0, 0, mode->hdisplay, mode->vdisplay, - crtc->x << 16, crtc->y << 16, - mode->hdisplay << 16, mode->vdisplay << 16, - vblank_cb, crtc); - mutex_unlock(&dev->mode_config.mutex); - - bo = omap_framebuffer_bo(crtc->fb, 0); - drm_gem_object_unreference_unlocked(bo); -} - -static void page_flip_cb(void *arg) -{ - struct drm_crtc *crtc = arg; - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - struct omap_drm_private *priv = crtc->dev->dev_private; - - /* avoid assumptions about what ctxt we are called from: */ - queue_work(priv->wq, &omap_crtc->page_flip_work); -} - -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); - struct drm_gem_object *bo; - - DBG("%d -> %d (event=%p)", crtc->fb ? crtc->fb->base.id : -1, - fb->base.id, event); - - if (omap_crtc->old_fb) { - dev_err(dev->dev, "already a pending flip\n"); - return -EINVAL; - } - - omap_crtc->event = event; - crtc->fb = fb; - - /* - * Hold a reference temporarily until the crtc is updated - * and takes the reference to the bo. This avoids it - * getting freed from under us: - */ - bo = omap_framebuffer_bo(fb, 0); - drm_gem_object_reference(bo); - - omap_gem_op_async(bo, OMAP_GEM_READ, page_flip_cb, crtc); - - return 0; -} - -static int omap_crtc_set_property(struct drm_crtc *crtc, - struct drm_property *property, uint64_t val) -{ - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - struct omap_drm_private *priv = crtc->dev->dev_private; - - if (property == priv->rotation_prop) { - crtc->invert_dimensions = - !!(val & ((1LL << DRM_ROTATE_90) | (1LL << DRM_ROTATE_270))); - } - - return omap_plane_set_property(omap_crtc->plane, property, val); -} - -static const struct drm_crtc_funcs omap_crtc_funcs = { - .set_config = drm_crtc_helper_set_config, - .destroy = omap_crtc_destroy, - .page_flip = omap_crtc_page_flip_locked, - .set_property = omap_crtc_set_property, -}; - -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, -}; - -const struct omap_video_timings *omap_crtc_timings(struct drm_crtc *crtc) -{ - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - return &omap_crtc->timings; -} - -enum omap_channel omap_crtc_channel(struct drm_crtc *crtc) -{ - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - return omap_crtc->channel; -} - -static void omap_crtc_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus) -{ - struct omap_crtc *omap_crtc = - container_of(irq, struct omap_crtc, error_irq); - struct drm_crtc *crtc = &omap_crtc->base; - DRM_ERROR("%s: errors: %08x\n", omap_crtc->name, irqstatus); - /* avoid getting in a flood, unregister the irq until next vblank */ - omap_irq_unregister(crtc->dev, &omap_crtc->error_irq); -} - -static void omap_crtc_apply_irq(struct omap_drm_irq *irq, uint32_t irqstatus) -{ - struct omap_crtc *omap_crtc = - container_of(irq, struct omap_crtc, apply_irq); - struct drm_crtc *crtc = &omap_crtc->base; - - if (!omap_crtc->error_irq.registered) - omap_irq_register(crtc->dev, &omap_crtc->error_irq); - - if (!dispc_mgr_go_busy(omap_crtc->channel)) { - struct omap_drm_private *priv = - crtc->dev->dev_private; - DBG("%s: apply done", omap_crtc->name); - omap_irq_unregister(crtc->dev, &omap_crtc->apply_irq); - queue_work(priv->wq, &omap_crtc->apply_work); - } -} - -static void apply_worker(struct work_struct *work) -{ - struct omap_crtc *omap_crtc = - container_of(work, struct omap_crtc, apply_work); - struct drm_crtc *crtc = &omap_crtc->base; - struct drm_device *dev = crtc->dev; - struct omap_drm_apply *apply, *n; - bool need_apply; - - /* - * Synchronize everything on mode_config.mutex, to keep - * the callbacks and list modification all serialized - * with respect to modesetting ioctls from userspace. - */ - mutex_lock(&dev->mode_config.mutex); - dispc_runtime_get(); - - /* - * If we are still pending a previous update, wait.. when the - * pending update completes, we get kicked again. - */ - if (omap_crtc->apply_irq.registered) - goto out; - - /* finish up previous apply's: */ - list_for_each_entry_safe(apply, n, - &omap_crtc->pending_applies, pending_node) { - apply->post_apply(apply); - list_del(&apply->pending_node); - } - - need_apply = !list_empty(&omap_crtc->queued_applies); - - /* then handle the next round of of queued apply's: */ - list_for_each_entry_safe(apply, n, - &omap_crtc->queued_applies, queued_node) { - apply->pre_apply(apply); - list_del(&apply->queued_node); - apply->queued = false; - list_add_tail(&apply->pending_node, - &omap_crtc->pending_applies); - } - - if (need_apply) { - enum omap_channel channel = omap_crtc->channel; - - DBG("%s: GO", omap_crtc->name); - - if (dispc_mgr_is_enabled(channel)) { - omap_irq_register(dev, &omap_crtc->apply_irq); - dispc_mgr_go(channel); - } else { - struct omap_drm_private *priv = dev->dev_private; - queue_work(priv->wq, &omap_crtc->apply_work); - } - } - -out: - dispc_runtime_put(); - mutex_unlock(&dev->mode_config.mutex); -} - -int omap_crtc_apply(struct drm_crtc *crtc, - struct omap_drm_apply *apply) -{ - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - struct drm_device *dev = crtc->dev; - - WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); - - /* no need to queue it again if it is already queued: */ - if (apply->queued) - return 0; - - apply->queued = true; - list_add_tail(&apply->queued_node, &omap_crtc->queued_applies); - - /* - * If there are no currently pending updates, then go ahead and - * kick the worker immediately, otherwise it will run again when - * the current update finishes. - */ - if (list_empty(&omap_crtc->pending_applies)) { - struct omap_drm_private *priv = crtc->dev->dev_private; - queue_work(priv->wq, &omap_crtc->apply_work); - } - - return 0; -} - -/* called only from apply */ -static void set_enabled(struct drm_crtc *crtc, bool enable) -{ - struct drm_device *dev = crtc->dev; - struct omap_crtc *omap_crtc = to_omap_crtc(crtc); - enum omap_channel channel = omap_crtc->channel; - struct omap_irq_wait *wait = NULL; - - if (dispc_mgr_is_enabled(channel) == enable) - return; - - /* ignore sync-lost irqs during enable/disable */ - omap_irq_unregister(crtc->dev, &omap_crtc->error_irq); - - if (dispc_mgr_get_framedone_irq(channel)) { - if (!enable) { - wait = omap_irq_wait_init(dev, - dispc_mgr_get_framedone_irq(channel), 1); - } - } else { - /* - * When we disable digit output, we need to wait until fields - * are done. Otherwise the DSS is still working, and turning - * off the clocks prevents DSS from going to OFF mode. And when - * enabling, we need to wait for the extra sync losts - */ - wait = omap_irq_wait_init(dev, - dispc_mgr_get_vsync_irq(channel), 2); - } - - dispc_mgr_enable(channel, enable); - - if (wait) { - int ret = omap_irq_wait(dev, wait, msecs_to_jiffies(100)); - if (ret) { - dev_err(dev->dev, "%s: timeout waiting for %s\n", - omap_crtc->name, enable ? "enable" : "disable"); - } - } - - omap_irq_register(crtc->dev, &omap_crtc->error_irq); -} - -static void omap_crtc_pre_apply(struct omap_drm_apply *apply) -{ - struct omap_crtc *omap_crtc = - container_of(apply, struct omap_crtc, apply); - struct drm_crtc *crtc = &omap_crtc->base; - struct drm_encoder *encoder = NULL; - - DBG("%s: enabled=%d, full=%d", omap_crtc->name, - omap_crtc->enabled, omap_crtc->full_update); - - if (omap_crtc->full_update) { - struct omap_drm_private *priv = crtc->dev->dev_private; - int i; - for (i = 0; i < priv->num_encoders; i++) { - if (priv->encoders[i]->crtc == crtc) { - encoder = priv->encoders[i]; - break; - } - } - } - - if (!omap_crtc->enabled) { - set_enabled(&omap_crtc->base, false); - if (encoder) - omap_encoder_set_enabled(encoder, false); - } else { - if (encoder) { - omap_encoder_set_enabled(encoder, false); - omap_encoder_update(encoder, &omap_crtc->mgr, - &omap_crtc->timings); - omap_encoder_set_enabled(encoder, true); - omap_crtc->full_update = false; - } - - dispc_mgr_setup(omap_crtc->channel, &omap_crtc->info); - dispc_mgr_set_timings(omap_crtc->channel, - &omap_crtc->timings); - set_enabled(&omap_crtc->base, true); - } - - omap_crtc->full_update = false; -} - -static void omap_crtc_post_apply(struct omap_drm_apply *apply) -{ - /* nothing needed for post-apply */ -} - -static const char *channel_names[] = { - [OMAP_DSS_CHANNEL_LCD] = "lcd", - [OMAP_DSS_CHANNEL_DIGIT] = "tv", - [OMAP_DSS_CHANNEL_LCD2] = "lcd2", -}; - -/* initialize crtc */ -struct drm_crtc *omap_crtc_init(struct drm_device *dev, - struct drm_plane *plane, enum omap_channel channel, int id) -{ - struct drm_crtc *crtc = NULL; - struct omap_crtc *omap_crtc; - struct omap_overlay_manager_info *info; - - DBG("%s", channel_names[channel]); - - omap_crtc = kzalloc(sizeof(*omap_crtc), GFP_KERNEL); - if (!omap_crtc) - goto fail; - - crtc = &omap_crtc->base; - - INIT_WORK(&omap_crtc->page_flip_work, page_flip_worker); - INIT_WORK(&omap_crtc->apply_work, apply_worker); - - INIT_LIST_HEAD(&omap_crtc->pending_applies); - INIT_LIST_HEAD(&omap_crtc->queued_applies); - - omap_crtc->apply.pre_apply = omap_crtc_pre_apply; - omap_crtc->apply.post_apply = omap_crtc_post_apply; - - omap_crtc->apply_irq.irqmask = pipe2vbl(id); - omap_crtc->apply_irq.irq = omap_crtc_apply_irq; - - omap_crtc->error_irq.irqmask = - dispc_mgr_get_sync_lost_irq(channel); - omap_crtc->error_irq.irq = omap_crtc_error_irq; - omap_irq_register(dev, &omap_crtc->error_irq); - - omap_crtc->channel = channel; - omap_crtc->plane = plane; - omap_crtc->plane->crtc = crtc; - omap_crtc->name = channel_names[channel]; - omap_crtc->pipe = id; - - /* temporary: */ - omap_crtc->mgr.id = channel; - - dss_install_mgr_ops(&mgr_ops); - - /* TODO: fix hard-coded setup.. add properties! */ - info = &omap_crtc->info; - info->default_color = 0x00000000; - info->trans_key = 0x00000000; - info->trans_key_type = OMAP_DSS_COLOR_KEY_GFX_DST; - info->trans_enabled = false; - - drm_crtc_init(dev, crtc, &omap_crtc_funcs); - drm_crtc_helper_add(crtc, &omap_crtc_helper_funcs); - - omap_plane_install_properties(omap_crtc->plane, &crtc->base); - - return crtc; - -fail: - if (crtc) - omap_crtc_destroy(crtc); - - return NULL; -} |