From: Patrik Jakobsson Date: Wed, 10 Jul 2013 21:43:01 +0000 (+0200) Subject: drm/gma500: Add generic cursor functions X-Git-Tag: firefly_0821_release~176^2~5263^2~60^2~15 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=38945be630a5848ffc75f2f9027cbb211dec3982;p=firefly-linux-kernel-4.4.55.git drm/gma500: Add generic cursor functions Signed-off-by: Patrik Jakobsson --- diff --git a/drivers/gpu/drm/gma500/gma_display.c b/drivers/gpu/drm/gma500/gma_display.c index 7a0888a64a33..40894c206098 100644 --- a/drivers/gpu/drm/gma500/gma_display.c +++ b/drivers/gpu/drm/gma500/gma_display.c @@ -327,6 +327,157 @@ void gma_crtc_dpms(struct drm_crtc *crtc, int mode) REG_WRITE(DSPARB, 0x3F3E); } +int gma_crtc_cursor_set(struct drm_crtc *crtc, + struct drm_file *file_priv, + uint32_t handle, + uint32_t width, uint32_t height) +{ + struct drm_device *dev = crtc->dev; + struct drm_psb_private *dev_priv = dev->dev_private; + struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc); + int pipe = psb_intel_crtc->pipe; + uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR; + uint32_t base = (pipe == 0) ? CURABASE : CURBBASE; + uint32_t temp; + size_t addr = 0; + struct gtt_range *gt; + struct gtt_range *cursor_gt = psb_intel_crtc->cursor_gt; + struct drm_gem_object *obj; + void *tmp_dst, *tmp_src; + int ret = 0, i, cursor_pages; + + /* If we didn't get a handle then turn the cursor off */ + if (!handle) { + temp = CURSOR_MODE_DISABLE; + + if (gma_power_begin(dev, false)) { + REG_WRITE(control, temp); + REG_WRITE(base, 0); + gma_power_end(dev); + } + + /* Unpin the old GEM object */ + if (psb_intel_crtc->cursor_obj) { + gt = container_of(psb_intel_crtc->cursor_obj, + struct gtt_range, gem); + psb_gtt_unpin(gt); + drm_gem_object_unreference(psb_intel_crtc->cursor_obj); + psb_intel_crtc->cursor_obj = NULL; + } + + return 0; + } + + /* Currently we only support 64x64 cursors */ + if (width != 64 || height != 64) { + dev_dbg(dev->dev, "We currently only support 64x64 cursors\n"); + return -EINVAL; + } + + obj = drm_gem_object_lookup(dev, file_priv, handle); + if (!obj) + return -ENOENT; + + if (obj->size < width * height * 4) { + dev_dbg(dev->dev, "Buffer is too small\n"); + ret = -ENOMEM; + goto unref_cursor; + } + + gt = container_of(obj, struct gtt_range, gem); + + /* Pin the memory into the GTT */ + ret = psb_gtt_pin(gt); + if (ret) { + dev_err(dev->dev, "Can not pin down handle 0x%x\n", handle); + goto unref_cursor; + } + + if (dev_priv->ops->cursor_needs_phys) { + if (cursor_gt == NULL) { + dev_err(dev->dev, "No hardware cursor mem available"); + ret = -ENOMEM; + goto unref_cursor; + } + + /* Prevent overflow */ + if (gt->npage > 4) + cursor_pages = 4; + else + cursor_pages = gt->npage; + + /* Copy the cursor to cursor mem */ + tmp_dst = dev_priv->vram_addr + cursor_gt->offset; + for (i = 0; i < cursor_pages; i++) { + tmp_src = kmap(gt->pages[i]); + memcpy(tmp_dst, tmp_src, PAGE_SIZE); + kunmap(gt->pages[i]); + tmp_dst += PAGE_SIZE; + } + + addr = psb_intel_crtc->cursor_addr; + } else { + addr = gt->offset; + psb_intel_crtc->cursor_addr = addr; + } + + temp = 0; + /* set the pipe for the cursor */ + temp |= (pipe << 28); + temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE; + + if (gma_power_begin(dev, false)) { + REG_WRITE(control, temp); + REG_WRITE(base, addr); + gma_power_end(dev); + } + + /* unpin the old bo */ + if (psb_intel_crtc->cursor_obj) { + gt = container_of(psb_intel_crtc->cursor_obj, + struct gtt_range, gem); + psb_gtt_unpin(gt); + drm_gem_object_unreference(psb_intel_crtc->cursor_obj); + } + + psb_intel_crtc->cursor_obj = obj; + return ret; + +unref_cursor: + drm_gem_object_unreference(obj); + return ret; +} + +int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) +{ + struct drm_device *dev = crtc->dev; + struct psb_intel_crtc *psb_intel_crtc = to_psb_intel_crtc(crtc); + int pipe = psb_intel_crtc->pipe; + uint32_t temp = 0; + uint32_t addr; + + if (x < 0) { + temp |= (CURSOR_POS_SIGN << CURSOR_X_SHIFT); + x = -x; + } + if (y < 0) { + temp |= (CURSOR_POS_SIGN << CURSOR_Y_SHIFT); + y = -y; + } + + temp |= ((x & CURSOR_POS_MASK) << CURSOR_X_SHIFT); + temp |= ((y & CURSOR_POS_MASK) << CURSOR_Y_SHIFT); + + addr = psb_intel_crtc->cursor_addr; + + if (gma_power_begin(dev, false)) { + REG_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp); + REG_WRITE((pipe == 0) ? CURABASE : CURBBASE, addr); + gma_power_end(dev); + } + return 0; +} + bool gma_crtc_mode_fixup(struct drm_crtc *crtc, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) diff --git a/drivers/gpu/drm/gma500/gma_display.h b/drivers/gpu/drm/gma500/gma_display.h index 665164d41224..0d3b6074ca99 100644 --- a/drivers/gpu/drm/gma500/gma_display.h +++ b/drivers/gpu/drm/gma500/gma_display.h @@ -64,6 +64,11 @@ extern bool gma_pipe_has_type(struct drm_crtc *crtc, int type); extern void gma_wait_for_vblank(struct drm_device *dev); extern int gma_pipe_set_base(struct drm_crtc *crtc, int x, int y, struct drm_framebuffer *old_fb); +extern int gma_crtc_cursor_set(struct drm_crtc *crtc, + struct drm_file *file_priv, + uint32_t handle, + uint32_t width, uint32_t height); +extern int gma_crtc_cursor_move(struct drm_crtc *crtc, int x, int y); extern void gma_crtc_load_lut(struct drm_crtc *crtc); extern void gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, u16 *blue, u32 start, u32 size);