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drm/i915: Fix scanline counter fixup on BDW

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The display interrupts changed on BDW, so the current ILK-HSW specific
code in ilk_pipe_in_vblank_locked() doesn't work there. Add the required
bits for BDW, and while at it, change the existing code to use nicer
looking vblank status bit macros.

Also remove the now stale __raw_i915_read16() definition which was
left over from the failed gen2 ISR experiment.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73962
Tested-by: Lu Hua <huax.lu@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2014-03-11 12:58:46 +02:00 committed by Jani Nikula
parent fcb818231f
commit 2430262493
1 changed files with 10 additions and 18 deletions
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28
drivers/gpu/drm/i915/i915_irq.c
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@ -618,33 +618,25 @@ static u32 gm45_get_vblank_counter(struct drm_device *dev, int pipe)
/* raw reads, only for fast reads of display block, no need for forcewake etc. */
#define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__))
#define __raw_i915_read16(dev_priv__, reg__) readw((dev_priv__)->regs + (reg__))
static bool ilk_pipe_in_vblank_locked(struct drm_device *dev, enum pipe pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t status;
int reg;
if (INTEL_INFO(dev)->gen < 7) {
status = pipe == PIPE_A ?
DE_PIPEA_VBLANK :
DE_PIPEB_VBLANK;
if (INTEL_INFO(dev)->gen >= 8) {
status = GEN8_PIPE_VBLANK;
reg = GEN8_DE_PIPE_ISR(pipe);
} else if (INTEL_INFO(dev)->gen >= 7) {
status = DE_PIPE_VBLANK_IVB(pipe);
reg = DEISR;
} else {
switch (pipe) {
default:
case PIPE_A:
status = DE_PIPEA_VBLANK_IVB;
break;
case PIPE_B:
status = DE_PIPEB_VBLANK_IVB;
break;
case PIPE_C:
status = DE_PIPEC_VBLANK_IVB;
break;
}
status = DE_PIPE_VBLANK(pipe);
reg = DEISR;
}
return __raw_i915_read32(dev_priv, DEISR) & status;
return __raw_i915_read32(dev_priv, reg) & status;
}
static int i915_get_crtc_scanoutpos(struct drm_device *dev, int pipe,