diff options
Diffstat (limited to 'drivers/staging/omapdrm/omap_plane.c')
| -rw-r--r-- | drivers/staging/omapdrm/omap_plane.c | 558 |
1 files changed, 0 insertions, 558 deletions
diff --git a/drivers/staging/omapdrm/omap_plane.c b/drivers/staging/omapdrm/omap_plane.c deleted file mode 100644 index 2a8e5bab49c9..000000000000 --- a/drivers/staging/omapdrm/omap_plane.c +++ /dev/null @@ -1,558 +0,0 @@ -/* - * drivers/staging/omapdrm/omap_plane.c - * - * Copyright (C) 2011 Texas Instruments - * Author: Rob Clark <rob.clark@linaro.org> - * - * 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 <linux/kfifo.h> - -#include "omap_drv.h" -#include "omap_dmm_tiler.h" - -/* some hackery because omapdss has an 'enum omap_plane' (which would be - * better named omap_plane_id).. and compiler seems unhappy about having - * both a 'struct omap_plane' and 'enum omap_plane' - */ -#define omap_plane _omap_plane - -/* - * plane funcs - */ - -struct callback { - void (*fxn)(void *); - void *arg; -}; - -#define to_omap_plane(x) container_of(x, struct omap_plane, base) - -struct omap_plane { - struct drm_plane base; - struct omap_overlay *ovl; - struct omap_overlay_info info; - - /* position/orientation of scanout within the fb: */ - struct omap_drm_window win; - - - /* last fb that we pinned: */ - struct drm_framebuffer *pinned_fb; - - uint32_t nformats; - uint32_t formats[32]; - - /* for synchronizing access to unpins fifo */ - struct mutex unpin_mutex; - - /* set of bo's pending unpin until next END_WIN irq */ - DECLARE_KFIFO_PTR(unpin_fifo, struct drm_gem_object *); - int num_unpins, pending_num_unpins; - - /* for deferred unpin when we need to wait for scanout complete irq */ - struct work_struct work; - - /* callback on next endwin irq */ - struct callback endwin; -}; - -/* map from ovl->id to the irq we are interested in for scanout-done */ -static const uint32_t id2irq[] = { - [OMAP_DSS_GFX] = DISPC_IRQ_GFX_END_WIN, - [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_END_WIN, - [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_END_WIN, - [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_END_WIN, -}; - -static void dispc_isr(void *arg, uint32_t mask) -{ - struct drm_plane *plane = arg; - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_drm_private *priv = plane->dev->dev_private; - - omap_dispc_unregister_isr(dispc_isr, plane, - id2irq[omap_plane->ovl->id]); - - queue_work(priv->wq, &omap_plane->work); -} - -static void unpin_worker(struct work_struct *work) -{ - struct omap_plane *omap_plane = - container_of(work, struct omap_plane, work); - struct callback endwin; - - mutex_lock(&omap_plane->unpin_mutex); - DBG("unpinning %d of %d", omap_plane->num_unpins, - omap_plane->num_unpins + omap_plane->pending_num_unpins); - while (omap_plane->num_unpins > 0) { - struct drm_gem_object *bo = NULL; - int ret = kfifo_get(&omap_plane->unpin_fifo, &bo); - WARN_ON(!ret); - omap_gem_put_paddr(bo); - drm_gem_object_unreference_unlocked(bo); - omap_plane->num_unpins--; - } - endwin = omap_plane->endwin; - omap_plane->endwin.fxn = NULL; - mutex_unlock(&omap_plane->unpin_mutex); - - if (endwin.fxn) - endwin.fxn(endwin.arg); -} - -static void install_irq(struct drm_plane *plane) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_overlay *ovl = omap_plane->ovl; - int ret; - - ret = omap_dispc_register_isr(dispc_isr, plane, id2irq[ovl->id]); - - /* - * omapdss has upper limit on # of registered irq handlers, - * which we shouldn't hit.. but if we do the limit should - * be raised or bad things happen: - */ - WARN_ON(ret == -EBUSY); -} - -/* push changes down to dss2 */ -static int commit(struct drm_plane *plane) -{ - struct drm_device *dev = plane->dev; - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_overlay *ovl = omap_plane->ovl; - struct omap_overlay_info *info = &omap_plane->info; - int ret; - - DBG("%s", 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 %08x", info->pos_x, info->pos_y, - info->paddr, info->p_uv_addr); - - /* 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; - } - - mutex_lock(&omap_plane->unpin_mutex); - omap_plane->num_unpins += omap_plane->pending_num_unpins; - omap_plane->pending_num_unpins = 0; - mutex_unlock(&omap_plane->unpin_mutex); - - /* 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; - } - - /* - * NOTE: really this should be atomic w/ mgr->apply() but - * omapdss does not expose such an API - */ - if (omap_plane->num_unpins > 0) - install_irq(plane); - - } else { - struct omap_drm_private *priv = dev->dev_private; - queue_work(priv->wq, &omap_plane->work); - } - - - if (ovl->is_enabled(ovl)) { - omap_framebuffer_flush(plane->fb, info->pos_x, info->pos_y, - info->out_width, info->out_height); - } - - return 0; -} - -/* when CRTC that we are attached to has potentially changed, this checks - * if we are attached to proper manager, and if necessary updates. - */ -static void update_manager(struct drm_plane *plane) -{ - struct omap_drm_private *priv = plane->dev->dev_private; - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_overlay *ovl = omap_plane->ovl; - struct omap_overlay_manager *mgr = NULL; - int i; - - if (plane->crtc) { - for (i = 0; i < priv->num_encoders; i++) { - struct drm_encoder *encoder = priv->encoders[i]; - if (encoder->crtc == plane->crtc) { - mgr = omap_encoder_get_manager(encoder); - break; - } - } - } - - if (ovl->manager != mgr) { - bool enabled = ovl->is_enabled(ovl); - - /* don't switch things around with enabled overlays: */ - if (enabled) - omap_plane_dpms(plane, DRM_MODE_DPMS_OFF); - - if (ovl->manager) { - DBG("disconnecting %s from %s", ovl->name, - ovl->manager->name); - ovl->unset_manager(ovl); - } - - if (mgr) { - DBG("connecting %s to %s", ovl->name, mgr->name); - ovl->set_manager(ovl, mgr); - } - - if (enabled && mgr) - omap_plane_dpms(plane, DRM_MODE_DPMS_ON); - } -} - -static void unpin(void *arg, struct drm_gem_object *bo) -{ - struct drm_plane *plane = arg; - struct omap_plane *omap_plane = to_omap_plane(plane); - - if (kfifo_put(&omap_plane->unpin_fifo, - (const struct drm_gem_object **)&bo)) { - omap_plane->pending_num_unpins++; - /* also hold a ref so it isn't free'd while pinned */ - drm_gem_object_reference(bo); - } else { - dev_err(plane->dev->dev, "unpin fifo full!\n"); - omap_gem_put_paddr(bo); - } -} - -/* update which fb (if any) is pinned for scanout */ -static int update_pin(struct drm_plane *plane, struct drm_framebuffer *fb) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - struct drm_framebuffer *pinned_fb = omap_plane->pinned_fb; - - if (pinned_fb != fb) { - int ret; - - DBG("%p -> %p", pinned_fb, fb); - - mutex_lock(&omap_plane->unpin_mutex); - ret = omap_framebuffer_replace(pinned_fb, fb, plane, unpin); - mutex_unlock(&omap_plane->unpin_mutex); - - if (ret) { - dev_err(plane->dev->dev, "could not swap %p -> %p\n", - omap_plane->pinned_fb, fb); - omap_plane->pinned_fb = NULL; - return ret; - } - - omap_plane->pinned_fb = fb; - } - - return 0; -} - -/* update parameters that are dependent on the framebuffer dimensions and - * position within the fb that this plane scans out from. This is called - * when framebuffer or x,y base may have changed. - */ -static void update_scanout(struct drm_plane *plane) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_overlay_info *info = &omap_plane->info; - struct omap_drm_window *win = &omap_plane->win; - int ret; - - ret = update_pin(plane, plane->fb); - if (ret) { - dev_err(plane->dev->dev, - "could not pin fb: %d\n", ret); - omap_plane_dpms(plane, DRM_MODE_DPMS_OFF); - return; - } - - omap_framebuffer_update_scanout(plane->fb, win, info); - - DBG("%s: %d,%d: %08x %08x (%d)", omap_plane->ovl->name, - win->src_x, win->src_y, - (u32)info->paddr, (u32)info->p_uv_addr, - info->screen_width); -} - -int omap_plane_mode_set(struct drm_plane *plane, - struct drm_crtc *crtc, struct drm_framebuffer *fb, - int crtc_x, int crtc_y, - unsigned int crtc_w, unsigned int crtc_h, - uint32_t src_x, uint32_t src_y, - uint32_t src_w, uint32_t src_h) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_drm_window *win = &omap_plane->win; - - win->crtc_x = crtc_x; - win->crtc_y = crtc_y; - win->crtc_w = crtc_w; - win->crtc_h = crtc_h; - - /* src values are in Q16 fixed point, convert to integer: */ - win->src_x = src_x >> 16; - win->src_y = src_y >> 16; - win->src_w = src_w >> 16; - win->src_h = src_h >> 16; - - /* note: this is done after this fxn returns.. but if we need - * to do a commit/update_scanout, etc before this returns we - * need the current value. - */ - plane->fb = fb; - plane->crtc = crtc; - - update_scanout(plane); - update_manager(plane); - - return 0; -} - -static int omap_plane_update(struct drm_plane *plane, - struct drm_crtc *crtc, struct drm_framebuffer *fb, - int crtc_x, int crtc_y, - unsigned int crtc_w, unsigned int crtc_h, - uint32_t src_x, uint32_t src_y, - uint32_t src_w, uint32_t src_h) -{ - omap_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y, crtc_w, crtc_h, - src_x, src_y, src_w, src_h); - return omap_plane_dpms(plane, DRM_MODE_DPMS_ON); -} - -static int omap_plane_disable(struct drm_plane *plane) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - omap_plane->win.rotation = BIT(DRM_ROTATE_0); - return omap_plane_dpms(plane, DRM_MODE_DPMS_OFF); -} - -static void omap_plane_destroy(struct drm_plane *plane) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - DBG("%s", omap_plane->ovl->name); - omap_plane_disable(plane); - drm_plane_cleanup(plane); - WARN_ON(omap_plane->pending_num_unpins + omap_plane->num_unpins > 0); - kfifo_free(&omap_plane->unpin_fifo); - kfree(omap_plane); -} - -int omap_plane_dpms(struct drm_plane *plane, int mode) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_overlay *ovl = omap_plane->ovl; - int r; - - DBG("%s: %d", omap_plane->ovl->name, mode); - - if (mode == DRM_MODE_DPMS_ON) { - update_scanout(plane); - r = commit(plane); - if (!r) - r = ovl->enable(ovl); - } else { - struct omap_drm_private *priv = plane->dev->dev_private; - r = ovl->disable(ovl); - update_pin(plane, NULL); - queue_work(priv->wq, &omap_plane->work); - } - - return r; -} - -void omap_plane_on_endwin(struct drm_plane *plane, - void (*fxn)(void *), void *arg) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - - mutex_lock(&omap_plane->unpin_mutex); - omap_plane->endwin.fxn = fxn; - omap_plane->endwin.arg = arg; - mutex_unlock(&omap_plane->unpin_mutex); - - install_irq(plane); -} - -/* helper to install properties which are common to planes and crtcs */ -void omap_plane_install_properties(struct drm_plane *plane, - struct drm_mode_object *obj) -{ - struct drm_device *dev = plane->dev; - struct omap_drm_private *priv = dev->dev_private; - struct drm_property *prop; - - if (priv->has_dmm) { - prop = priv->rotation_prop; - if (!prop) { - const struct drm_prop_enum_list props[] = { - { DRM_ROTATE_0, "rotate-0" }, - { DRM_ROTATE_90, "rotate-90" }, - { DRM_ROTATE_180, "rotate-180" }, - { DRM_ROTATE_270, "rotate-270" }, - { DRM_REFLECT_X, "reflect-x" }, - { DRM_REFLECT_Y, "reflect-y" }, - }; - prop = drm_property_create_bitmask(dev, 0, "rotation", - props, ARRAY_SIZE(props)); - if (prop == NULL) - return; - priv->rotation_prop = prop; - } - drm_object_attach_property(obj, prop, 0); - } - - prop = priv->zorder_prop; - if (!prop) { - prop = drm_property_create_range(dev, 0, "zorder", 0, 3); - if (prop == NULL) - return; - priv->zorder_prop = prop; - } - drm_object_attach_property(obj, prop, 0); -} - -int omap_plane_set_property(struct drm_plane *plane, - struct drm_property *property, uint64_t val) -{ - struct omap_plane *omap_plane = to_omap_plane(plane); - struct omap_drm_private *priv = plane->dev->dev_private; - int ret = -EINVAL; - - if (property == priv->rotation_prop) { - struct omap_overlay *ovl = omap_plane->ovl; - - DBG("%s: rotation: %02x", ovl->name, (uint32_t)val); - omap_plane->win.rotation = val; - - if (ovl->is_enabled(ovl)) - ret = omap_plane_dpms(plane, DRM_MODE_DPMS_ON); - else - ret = 0; - } else if (property == priv->zorder_prop) { - struct omap_overlay *ovl = omap_plane->ovl; - - DBG("%s: zorder: %d", ovl->name, (uint32_t)val); - omap_plane->info.zorder = val; - - if (ovl->is_enabled(ovl)) - ret = omap_plane_dpms(plane, DRM_MODE_DPMS_ON); - else - ret = 0; - } - - return ret; -} - -static const struct drm_plane_funcs omap_plane_funcs = { - .update_plane = omap_plane_update, - .disable_plane = omap_plane_disable, - .destroy = omap_plane_destroy, - .set_property = omap_plane_set_property, -}; - -/* initialize plane */ -struct drm_plane *omap_plane_init(struct drm_device *dev, - struct omap_overlay *ovl, unsigned int possible_crtcs, - bool priv) -{ - struct drm_plane *plane = NULL; - struct omap_plane *omap_plane; - int ret; - - DBG("%s: possible_crtcs=%08x, priv=%d", ovl->name, - possible_crtcs, priv); - - /* friendly reminder to update table for future hw: */ - WARN_ON(ovl->id >= ARRAY_SIZE(id2irq)); - - omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL); - if (!omap_plane) { - dev_err(dev->dev, "could not allocate plane\n"); - goto fail; - } - - mutex_init(&omap_plane->unpin_mutex); - - ret = kfifo_alloc(&omap_plane->unpin_fifo, 16, GFP_KERNEL); - if (ret) { - dev_err(dev->dev, "could not allocate unpin FIFO\n"); - goto fail; - } - - INIT_WORK(&omap_plane->work, unpin_worker); - - omap_plane->nformats = omap_framebuffer_get_formats( - omap_plane->formats, ARRAY_SIZE(omap_plane->formats), - ovl->supported_modes); - omap_plane->ovl = ovl; - plane = &omap_plane->base; - - drm_plane_init(dev, plane, possible_crtcs, &omap_plane_funcs, - omap_plane->formats, omap_plane->nformats, priv); - - omap_plane_install_properties(plane, &plane->base); - - /* get our starting configuration, set defaults for parameters - * we don't currently use, etc: - */ - ovl->get_overlay_info(ovl, &omap_plane->info); - omap_plane->info.rotation_type = OMAP_DSS_ROT_DMA; - omap_plane->info.rotation = OMAP_DSS_ROT_0; - omap_plane->info.global_alpha = 0xff; - omap_plane->info.mirror = 0; - - /* Set defaults depending on whether we are a CRTC or overlay - * layer. - * TODO add ioctl to give userspace an API to change this.. this - * will come in a subsequent patch. - */ - if (priv) - omap_plane->info.zorder = 0; - else - omap_plane->info.zorder = ovl->id; - - update_manager(plane); - - return plane; - -fail: - if (plane) - omap_plane_destroy(plane); - - return NULL; -} |