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drm/i915: Drop the broken cursor base==0 special casing 

The cursor code tries to treat base==0 to mean disabled. That fails
when the cursor bo gets bound at ggtt offset 0, and the user is left
looking at an invisible cursor.

We lose the disabled->disabled optimization, but that seems like
something better handled at a slightly higher level.

Cc: drm-intel-fixes@lists.freedesktop.org
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450091808-32607-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Ville Syrjälä 2015-12-14 13:16:48 +02:00
parent 1264859d64
commit 663f3122d0
1 changed files with 12 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
drivers/gpu/drm/i915/intel_display.c
View File

@ -10013,14 +10013,14 @@ static bool haswell_get_pipe_config(struct intel_crtc *crtc,
return true;
}
static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
static void i845_update_cursor(struct drm_crtc *crtc, u32 base, bool on)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
uint32_t cntl = 0, size = 0;
if (base) {
if (on) {
unsigned int width = intel_crtc->base.cursor->state->crtc_w;
unsigned int height = intel_crtc->base.cursor->state->crtc_h;
unsigned int stride = roundup_pow_of_two(width) * 4;
@ -10075,16 +10075,15 @@ static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
}
}
static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base, bool on)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
uint32_t cntl;
uint32_t cntl = 0;
cntl = 0;
if (base) {
if (on) {
cntl = MCURSOR_GAMMA_ENABLE;
switch (intel_crtc->base.cursor->state->crtc_w) {
case 64:
@ -10135,18 +10134,17 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
int y = cursor_state->crtc_y;
u32 base = 0, pos = 0;
if (on)
base = intel_crtc->cursor_addr;
if (x >= intel_crtc->config->pipe_src_w)
base = 0;
on = false;
if (y >= intel_crtc->config->pipe_src_h)
base = 0;
on = false;
if (x < 0) {
if (x + cursor_state->crtc_w <= 0)
base = 0;
on = false;
pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
x = -x;
@ -10155,16 +10153,13 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
if (y < 0) {
if (y + cursor_state->crtc_h <= 0)
base = 0;
on = false;
pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
y = -y;
}
pos |= y << CURSOR_Y_SHIFT;
if (base == 0 && intel_crtc->cursor_base == 0)
return;
I915_WRITE(CURPOS(pipe), pos);
/* ILK+ do this automagically */
@ -10175,9 +10170,9 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
}
if (IS_845G(dev) || IS_I865G(dev))
i845_update_cursor(crtc, base);
i845_update_cursor(crtc, base, on);
else
i9xx_update_cursor(crtc, base);
i9xx_update_cursor(crtc, base, on);
}
static bool cursor_size_ok(struct drm_device *dev,