diff options
| author | Jesse Barnes | 2014-05-23 22:16:42 +0200 |
|---|---|---|
| committer | Daniel Vetter | 2014-06-05 08:52:36 +0200 |
| commit | b00f025cf8242a4c91402abeaac6c2b589fcb263 (patch) | |
| tree | d269b275c6b18e45dcf3ed8807484a2b3b08ac7b /drivers/gpu/drm/i915/intel_pm.c | |
| parent | drm/i915/vlv: drop power well enable in uncore_sanitize (diff) | |
| download | kernel-qcow2-linux-b00f025cf8242a4c91402abeaac6c2b589fcb263.tar.gz kernel-qcow2-linux-b00f025cf8242a4c91402abeaac6c2b589fcb263.tar.xz kernel-qcow2-linux-b00f025cf8242a4c91402abeaac6c2b589fcb263.zip | |
drm/i915/vlv: move CRI refclk enable into __vlv_set_power_well
This needs to be done before we power back on the CMN_BC well so the PHY
can calibrate properly.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 25caf8fb6656..813afac04ddf 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5715,6 +5715,17 @@ void __vlv_set_power_well(struct drm_i915_private *dev_priv, u32 state; u32 ctrl; + if (power_well_id == PUNIT_POWER_WELL_DPIO_CMN_BC && enable) { + /* + * Enable the CRI clock source so we can get at the display + * and the reference clock for VGA hotplug / manual detection. + */ + I915_WRITE(DPLL(PIPE_B), I915_READ(DPLL(PIPE_B)) | + DPLL_REFA_CLK_ENABLE_VLV | + DPLL_INTEGRATED_CRI_CLK_VLV); + udelay(1); /* >10ns for cmnreset, >0ns for sidereset */ + } + mask = PUNIT_PWRGT_MASK(power_well_id); state = enable ? PUNIT_PWRGT_PWR_ON(power_well_id) : PUNIT_PWRGT_PWR_GATE(power_well_id); |