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| author | Shobhit Kumar <shobhit.kumar@intel.com> | 2014-04-09 13:59:30 +0530 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-04-09 21:54:27 +0200 |
| commit | 2095f9fc06f2222dd81866306f777cc5f52659ab (patch) | |
| tree | 75cb7d8df0ff101d0844acc0e3073e0c79cacdd0 /drivers/gpu/drm/i915/intel_dsi.c | |
| parent | 113a047633eb7ee2a1d14cc258d7e5bca9215f73 (diff) | |
| download | op-kernel-dev-2095f9fc06f2222dd81866306f777cc5f52659ab.zip op-kernel-dev-2095f9fc06f2222dd81866306f777cc5f52659ab.tar.gz | |
drm/i915: Program Rcomp and band gap reset everytime we resume from power gate
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dsi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c index 3365664..7ceb8c6 100644 --- a/drivers/gpu/drm/i915/intel_dsi.c +++ b/drivers/gpu/drm/i915/intel_dsi.c @@ -110,6 +110,15 @@ static void intel_dsi_device_ready(struct intel_encoder *encoder) DRM_DEBUG_KMS("\n"); + mutex_lock(&dev_priv->dpio_lock); + /* program rcomp for compliance, reduce from 50 ohms to 45 ohms + * needed everytime after power gate */ + vlv_flisdsi_write(dev_priv, 0x04, 0x0004); + mutex_unlock(&dev_priv->dpio_lock); + + /* bandgap reset is needed after everytime we do power gate */ + band_gap_reset(dev_priv); + val = I915_READ(MIPI_PORT_CTRL(pipe)); I915_WRITE(MIPI_PORT_CTRL(pipe), val | LP_OUTPUT_HOLD); usleep_range(1000, 1500); @@ -379,9 +388,6 @@ static void intel_dsi_mode_set(struct intel_encoder *intel_encoder) DRM_DEBUG_KMS("pipe %c\n", pipe_name(pipe)); - /* XXX: Location of the call */ - band_gap_reset(dev_priv); - /* escape clock divider, 20MHz, shared for A and C. device ready must be * off when doing this! txclkesc? */ tmp = I915_READ(MIPI_CTRL(0)); |
