--- /dev/null
+/*
+ * drivers/gpu/drm/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 "drm_flip_work.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;
+ int id; /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */
+ const char *name;
+ struct omap_overlay_info info;
+ struct omap_drm_apply apply;
+
+ /* position/orientation of scanout within the fb: */
+ struct omap_drm_window win;
+ bool enabled;
+
+ /* last fb that we pinned: */
+ struct drm_framebuffer *pinned_fb;
+
+ uint32_t nformats;
+ uint32_t formats[32];
+
+ struct omap_drm_irq error_irq;
+
+ /* for deferring bo unpin's until next post_apply(): */
+ struct drm_flip_work unpin_work;
+
+ // XXX maybe get rid of this and handle vblank in crtc too?
+ struct callback apply_done_cb;
+};
+
+static void omap_plane_unpin_worker(struct drm_flip_work *work, void *val)
+{
+ struct omap_plane *omap_plane =
+ container_of(work, struct omap_plane, unpin_work);
+ struct drm_device *dev = omap_plane->base.dev;
+
+ /*
+ * omap_framebuffer_pin/unpin are always called from priv->wq,
+ * so there's no need for locking here.
+ */
+ omap_framebuffer_unpin(val);
+ mutex_lock(&dev->mode_config.mutex);
+ drm_framebuffer_unreference(val);
+ mutex_unlock(&dev->mode_config.mutex);
+}
+
+/* update which fb (if any) is pinned for scanout */
+static int omap_plane_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 = 0;
+
+ DBG("%p -> %p", pinned_fb, fb);
+
+ if (fb) {
+ drm_framebuffer_reference(fb);
+ ret = omap_framebuffer_pin(fb);
+ }
+
+ if (pinned_fb)
+ drm_flip_work_queue(&omap_plane->unpin_work, pinned_fb);
+
+ if (ret) {
+ dev_err(plane->dev->dev, "could not swap %p -> %p\n",
+ omap_plane->pinned_fb, fb);
+ drm_framebuffer_unreference(fb);
+ omap_plane->pinned_fb = NULL;
+ return ret;
+ }
+
+ omap_plane->pinned_fb = fb;
+ }
+
+ return 0;
+}
+
+static void omap_plane_pre_apply(struct omap_drm_apply *apply)
+{
+ struct omap_plane *omap_plane =
+ container_of(apply, struct omap_plane, apply);
+ struct omap_drm_window *win = &omap_plane->win;
+ struct drm_plane *plane = &omap_plane->base;
+ struct drm_device *dev = plane->dev;
+ struct omap_overlay_info *info = &omap_plane->info;
+ struct drm_crtc *crtc = plane->crtc;
+ enum omap_channel channel;
+ bool enabled = omap_plane->enabled && crtc;
+ int ret;
+
+ DBG("%s, enabled=%d", omap_plane->name, enabled);
+
+ /* if fb has changed, pin new fb: */
+ omap_plane_update_pin(plane, enabled ? plane->fb : NULL);
+
+ if (!enabled) {
+ dispc_ovl_enable(omap_plane->id, false);
+ return;
+ }
+
+ channel = omap_crtc_channel(crtc);
+
+ /* update scanout: */
+ omap_framebuffer_update_scanout(plane->fb, win, info);
+
+ DBG("%dx%d -> %dx%d (%d)", info->width, info->height,
+ info->out_width, info->out_height,
+ info->screen_width);
+ DBG("%d,%d %pad %pad", info->pos_x, info->pos_y,
+ &info->paddr, &info->p_uv_addr);
+
+ dispc_ovl_set_channel_out(omap_plane->id, channel);
+
+ /* and finally, update omapdss: */
+ ret = dispc_ovl_setup(omap_plane->id, info, false,
+ omap_crtc_timings(crtc), false);
+ if (ret) {
+ dev_err(dev->dev, "dispc_ovl_setup failed: %d\n", ret);
+ return;
+ }
+
+ dispc_ovl_enable(omap_plane->id, true);
+}
+
+static void omap_plane_post_apply(struct omap_drm_apply *apply)
+{
+ struct omap_plane *omap_plane =
+ container_of(apply, struct omap_plane, apply);
+ struct drm_plane *plane = &omap_plane->base;
+ struct omap_drm_private *priv = plane->dev->dev_private;
+ struct callback cb;
+
+ cb = omap_plane->apply_done_cb;
+ omap_plane->apply_done_cb.fxn = NULL;
+
+ drm_flip_work_commit(&omap_plane->unpin_work, priv->wq);
+
+ if (cb.fxn)
+ cb.fxn(cb.arg);
+}
+
+static int omap_plane_apply(struct drm_plane *plane)
+{
+ if (plane->crtc) {
+ struct omap_plane *omap_plane = to_omap_plane(plane);
+ return omap_crtc_apply(plane->crtc, &omap_plane->apply);
+ }
+ return 0;
+}
+
+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,
+ unsigned int src_x, unsigned int src_y,
+ unsigned int src_w, unsigned int src_h,
+ void (*fxn)(void *), void *arg)
+{
+ 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;
+
+ win->src_x = src_x;
+ win->src_y = src_y;
+ win->src_w = src_w;
+ win->src_h = src_h;
+
+ if (fxn) {
+ /* omap_crtc should ensure that a new page flip
+ * isn't permitted while there is one pending:
+ */
+ BUG_ON(omap_plane->apply_done_cb.fxn);
+
+ omap_plane->apply_done_cb.fxn = fxn;
+ omap_plane->apply_done_cb.arg = arg;
+ }
+
+ return omap_plane_apply(plane);
+}
+
+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)
+{
+ struct omap_plane *omap_plane = to_omap_plane(plane);
+ omap_plane->enabled = true;
+
+ /* omap_plane_mode_set() takes adjusted src */
+ switch (omap_plane->win.rotation & 0xf) {
+ case BIT(DRM_ROTATE_90):
+ case BIT(DRM_ROTATE_270):
+ swap(src_w, src_h);
+ break;
+ }
+
+ /*
+ * We don't need to take a reference to the framebuffer as the DRM core
+ * has already done so for the purpose of setting plane->fb.
+ */
+ plane->fb = fb;
+ plane->crtc = crtc;
+
+ /* src values are in Q16 fixed point, convert to integer: */
+ return omap_plane_mode_set(plane, crtc, fb,
+ crtc_x, crtc_y, crtc_w, crtc_h,
+ src_x >> 16, src_y >> 16, src_w >> 16, src_h >> 16,
+ NULL, NULL);
+}
+
+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);
+ omap_plane->info.zorder = plane->type == DRM_PLANE_TYPE_PRIMARY
+ ? 0 : omap_plane->id;
+
+ return omap_plane_set_enable(plane, false);
+}
+
+static void omap_plane_destroy(struct drm_plane *plane)
+{
+ struct omap_plane *omap_plane = to_omap_plane(plane);
+
+ DBG("%s", omap_plane->name);
+
+ omap_irq_unregister(plane->dev, &omap_plane->error_irq);
+
+ drm_plane_cleanup(plane);
+
+ drm_flip_work_cleanup(&omap_plane->unpin_work);
+
+ kfree(omap_plane);
+}
+
+int omap_plane_set_enable(struct drm_plane *plane, bool enable)
+{
+ struct omap_plane *omap_plane = to_omap_plane(plane);
+
+ if (enable == omap_plane->enabled)
+ return 0;
+
+ omap_plane->enabled = enable;
+ return omap_plane_apply(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) {
+ prop = drm_mode_create_rotation_property(dev,
+ BIT(DRM_ROTATE_0) |
+ BIT(DRM_ROTATE_90) |
+ BIT(DRM_ROTATE_180) |
+ BIT(DRM_ROTATE_270) |
+ BIT(DRM_REFLECT_X) |
+ BIT(DRM_REFLECT_Y));
+ 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) {
+ DBG("%s: rotation: %02x", omap_plane->name, (uint32_t)val);
+ omap_plane->win.rotation = val;
+ ret = omap_plane_apply(plane);
+ } else if (property == priv->zorder_prop) {
+ DBG("%s: zorder: %02x", omap_plane->name, (uint32_t)val);
+ omap_plane->info.zorder = val;
+ ret = omap_plane_apply(plane);
+ }
+
+ 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,
+};
+
+static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus)
+{
+ struct omap_plane *omap_plane =
+ container_of(irq, struct omap_plane, error_irq);
+ DRM_ERROR_RATELIMITED("%s: errors: %08x\n", omap_plane->name,
+ irqstatus);
+}
+
+static const char *plane_names[] = {
+ [OMAP_DSS_GFX] = "gfx",
+ [OMAP_DSS_VIDEO1] = "vid1",
+ [OMAP_DSS_VIDEO2] = "vid2",
+ [OMAP_DSS_VIDEO3] = "vid3",
+};
+
+static const uint32_t error_irqs[] = {
+ [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW,
+ [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW,
+ [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW,
+ [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW,
+};
+
+/* initialize plane */
+struct drm_plane *omap_plane_init(struct drm_device *dev,
+ int id, enum drm_plane_type type)
+{
+ struct omap_drm_private *priv = dev->dev_private;
+ struct drm_plane *plane;
+ struct omap_plane *omap_plane;
+ struct omap_overlay_info *info;
+ int ret;
+
+ DBG("%s: type=%d", plane_names[id], type);
+
+ omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL);
+ if (!omap_plane)
+ return ERR_PTR(-ENOMEM);
+
+ drm_flip_work_init(&omap_plane->unpin_work,
+ "unpin", omap_plane_unpin_worker);
+
+ omap_plane->nformats = omap_framebuffer_get_formats(
+ omap_plane->formats, ARRAY_SIZE(omap_plane->formats),
+ dss_feat_get_supported_color_modes(id));
+ omap_plane->id = id;
+ omap_plane->name = plane_names[id];
+
+ plane = &omap_plane->base;
+
+ omap_plane->apply.pre_apply = omap_plane_pre_apply;
+ omap_plane->apply.post_apply = omap_plane_post_apply;
+
+ omap_plane->error_irq.irqmask = error_irqs[id];
+ omap_plane->error_irq.irq = omap_plane_error_irq;
+ omap_irq_register(dev, &omap_plane->error_irq);
+
+ ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1,
+ &omap_plane_funcs, omap_plane->formats,
+ omap_plane->nformats, type);
+ if (ret < 0)
+ goto error;
+
+ omap_plane_install_properties(plane, &plane->base);
+
+ /* get our starting configuration, set defaults for parameters
+ * we don't currently use, etc:
+ */
+ info = &omap_plane->info;
+ info->rotation_type = OMAP_DSS_ROT_DMA;
+ info->rotation = OMAP_DSS_ROT_0;
+ info->global_alpha = 0xff;
+ 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 (type == DRM_PLANE_TYPE_PRIMARY)
+ omap_plane->info.zorder = 0;
+ else
+ omap_plane->info.zorder = id;
+
+ return plane;
+
+error:
+ omap_irq_unregister(plane->dev, &omap_plane->error_irq);
+ kfree(omap_plane);
+ return NULL;
+}
Code Review / kvmfornfv.git / blobdiff