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drm/i915: Show cursor status in debugfs/i915_display_info 

I have the occasional absent cursor on i845 and I want to know why.
This should help by revealing the last known cursor state.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2014-03-12 09:13:13 +00:00 committed by Daniel Vetter
parent 8ac36ec1e3
commit 065f2ec2af
1 changed files with 50 additions and 7 deletions
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57
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -2248,24 +2248,67 @@ static void intel_connector_info(struct seq_file *m,
intel_seq_print_mode(m, 2, mode);
}
static bool cursor_active(struct drm_device *dev, int pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 state;
if (IS_845G(dev) || IS_I865G(dev))
state = I915_READ(_CURACNTR) & CURSOR_ENABLE;
else if (INTEL_INFO(dev)->gen <= 6 || IS_VALLEYVIEW(dev))
state = I915_READ(CURCNTR(pipe)) & CURSOR_MODE;
else
state = I915_READ(CURCNTR_IVB(pipe)) & CURSOR_MODE;
return state;
}
static bool cursor_position(struct drm_device *dev, int pipe, int *x, int *y)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 pos;
if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev) || IS_BROADWELL(dev))
pos = I915_READ(CURPOS_IVB(pipe));
else
pos = I915_READ(CURPOS(pipe));
*x = (pos >> CURSOR_X_SHIFT) & CURSOR_POS_MASK;
if (pos & (CURSOR_POS_SIGN << CURSOR_X_SHIFT))
*x = -*x;
*y = (pos >> CURSOR_Y_SHIFT) & CURSOR_POS_MASK;
if (pos & (CURSOR_POS_SIGN << CURSOR_Y_SHIFT))
*y = -*y;
return cursor_active(dev, pipe);
}
static int i915_display_info(struct seq_file *m, void *unused)
{
struct drm_info_node *node = (struct drm_info_node *) m->private;
struct drm_device *dev = node->minor->dev;
struct drm_crtc *crtc;
struct intel_crtc *crtc;
struct drm_connector *connector;
drm_modeset_lock_all(dev);
seq_printf(m, "CRTC info\n");
seq_printf(m, "---------\n");
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
bool active;
int x, y;
seq_printf(m, "CRTC %d: pipe: %c, active: %s\n",
crtc->base.id, pipe_name(intel_crtc->pipe),
intel_crtc->active ? "yes" : "no");
if (intel_crtc->active)
intel_crtc_info(m, intel_crtc);
crtc->base.base.id, pipe_name(crtc->pipe),
yesno(crtc->active));
if (crtc->active)
intel_crtc_info(m, crtc);
active = cursor_position(dev, crtc->pipe, &x, &y);
seq_printf(m, "\tcursor visible? %s, position (%d, %d), addr 0x%08x, active? %s\n",
yesno(crtc->cursor_visible),
x, y, crtc->cursor_addr,
yesno(active));
}
seq_printf(m, "\n");