From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
lpt_program_iclkip() wants to know the pixel clock. It should get that
information from adjusted_mode, not crtc->mode.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_display.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 2c450fe..fd67758 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2875,6 +2875,7 @@ static void lpt_program_iclkip(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ int clock = to_intel_crtc(crtc)->config.adjusted_mode.clock;
u32 divsel, phaseinc, auxdiv, phasedir = 0;
u32 temp;
@@ -2892,13 +2893,13 @@ static void lpt_program_iclkip(struct drm_crtc *crtc)
SBI_ICLK);
/* 20MHz is a corner case which is out of range for the 7-bit divisor */
- if (crtc->mode.clock == 20000) {
+ if (clock == 20000) {
auxdiv = 1;
divsel = 0x41;
phaseinc = 0x20;
} else {
/* The iCLK virtual clock root frequency is in MHz,
- * but the crtc->mode.clock in in KHz. To get the divisors,
+ * but the adjusted_mode->clock in in KHz. To get the divisors,
* it is necessary to divide one by another, so we
* convert the virtual clock precision to KHz here for higher
* precision.
@@ -2907,7 +2908,7 @@ static void lpt_program_iclkip(struct drm_crtc *crtc)
u32 iclk_pi_range = 64;
u32 desired_divisor, msb_divisor_value, pi_value;
- desired_divisor = (iclk_virtual_root_freq / crtc->mode.clock);
+ desired_divisor = (iclk_virtual_root_freq / clock);
msb_divisor_value = desired_divisor / iclk_pi_range;
pi_value = desired_divisor % iclk_pi_range;
@@ -2923,7 +2924,7 @@ static void lpt_program_iclkip(struct drm_crtc *crtc)
~SBI_SSCDIVINTPHASE_INCVAL_MASK);
DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
- crtc->mode.clock,
+ clock,
auxdiv,
divsel,
phasedir,
--
1.8.1.5
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