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drm/gma500: Add generic cursor functions

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Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
This commit is contained in:
Patrik Jakobsson 2013-07-10 23:43:01 +02:00
parent b1255b8849
commit 38945be630
2 changed files with 156 additions and 0 deletions
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151
drivers/gpu/drm/gma500/gma_display.c
View File

@ -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)

5
drivers/gpu/drm/gma500/gma_display.h
View File

@ -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);