diff options
| author | Gaurav K Singh <gaurav.k.singh@intel.com> | 2014-12-05 11:46:58 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-12-05 17:28:56 +0300 |
| commit | 3770f0eec40cb9f1fb7af6453f7bcb420a8a86bc (patch) | |
| tree | 9778a9bc6fc8d715ceaade29c64bb6ce6567e7d5 /drivers/gpu/drm/i915/intel_dsi_pll.c | |
| parent | 58cf8887c94d8dfe42206af7de57163ce0f46cf2 (diff) | |
| download | linux-3770f0eec40cb9f1fb7af6453f7bcb420a8a86bc.tar.xz | |
drm/i915: cck reg used for checking DSI Pll locked
Instead of pipe configuration reg, cck reg to be used for checking whether
DSI Pll is getting locked or not.
v2: dpio_lock unlocked now in case DSI PLL lock fails
Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com>
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_pll.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dsi_pll.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c index 636d72f7dd42..8957f1099a1f 100644 --- a/drivers/gpu/drm/i915/intel_dsi_pll.c +++ b/drivers/gpu/drm/i915/intel_dsi_pll.c @@ -272,12 +272,14 @@ void vlv_enable_dsi_pll(struct intel_encoder *encoder) tmp |= DSI_PLL_VCO_EN; vlv_cck_write(dev_priv, CCK_REG_DSI_PLL_CONTROL, tmp); - mutex_unlock(&dev_priv->dpio_lock); + if (wait_for(vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL) & + DSI_PLL_LOCK, 20)) { - if (wait_for(I915_READ(PIPECONF(PIPE_A)) & PIPECONF_DSI_PLL_LOCKED, 20)) { + mutex_unlock(&dev_priv->dpio_lock); DRM_ERROR("DSI PLL lock failed\n"); return; } + mutex_unlock(&dev_priv->dpio_lock); DRM_DEBUG_KMS("DSI PLL locked\n"); } |