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| author |  Ville Syrjälä <ville.syrjala@linux.intel.com>
| 2014-04-09 13:29:02 +0300 |
|---|---|---|
| committer |  Daniel Vetter <daniel.vetter@ffwll.ch>
| 2014-05-20 15:48:58 +0200 |
| commit | 97fd4d5c81af7976b4ec9971a93bf3c361066c65 (patch) | |
| tree | 0adbfae41574e1366b48f2e564eec85507d026c0 /drivers/gpu/drm/i915/intel_hdmi.c | |
| parent | drm/i915/chv: Set soft reset override bit for data lane resets (diff) | |
| download | linux-97fd4d5c81af7976b4ec9971a93bf3c361066c65.tar.gz linux-97fd4d5c81af7976b4ec9971a93bf3c361066c65.tar.bz2 linux-97fd4d5c81af7976b4ec9971a93bf3c361066c65.zip | |
drm/i915/chv: Don't use PCS group access reads
All PCS groups access reads return 0xffffffff, so we can't use group
access for RMW cycles. Instead target each spline separately.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
[danvet: Fight conflict with misplaced ; .... ARGH!]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_hdmi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_hdmi.c | 32 |
1 files changed, 24 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index f66c7a2ebd9a..b976255f7961 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1259,13 +1259,21 @@ static void chv_hdmi_post_disable(struct intel_encoder *encoder) mutex_lock(&dev_priv->dpio_lock); /* Propagate soft reset to data lane reset */ - val = vlv_dpio_read(dev_priv, pipe, VLV_PCS_DW1(ch)); + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); val |= CHV_PCS_REQ_SOFTRESET_EN; - vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(ch), val); + vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); - val = vlv_dpio_read(dev_priv, pipe, VLV_PCS_DW0(ch)); + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); + val |= CHV_PCS_REQ_SOFTRESET_EN; + vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); + + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); + val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); + vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); + + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); val &= ~(DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); - vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(ch), val); + vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); mutex_unlock(&dev_priv->dpio_lock); } @@ -1285,13 +1293,21 @@ static void chv_hdmi_pre_enable(struct intel_encoder *encoder) mutex_lock(&dev_priv->dpio_lock); /* Deassert soft data lane reset*/ - val = vlv_dpio_read(dev_priv, pipe, VLV_PCS_DW1(ch)); + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW1(ch)); val |= CHV_PCS_REQ_SOFTRESET_EN; - vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW1(ch), val); + vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW1(ch), val); + + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW1(ch)); + val |= CHV_PCS_REQ_SOFTRESET_EN; + vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW1(ch), val); + + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS01_DW0(ch)); + val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); + vlv_dpio_write(dev_priv, pipe, VLV_PCS01_DW0(ch), val); - val = vlv_dpio_read(dev_priv, pipe, VLV_PCS_DW0(ch)); + val = vlv_dpio_read(dev_priv, pipe, VLV_PCS23_DW0(ch)); val |= (DPIO_PCS_TX_LANE2_RESET | DPIO_PCS_TX_LANE1_RESET); - vlv_dpio_write(dev_priv, pipe, VLV_PCS_DW0(ch), val); + vlv_dpio_write(dev_priv, pipe, VLV_PCS23_DW0(ch), val); /* Program Tx latency optimal setting */ for (i = 0; i < 4; i++) { |