diff options
| author | Zhao Yakui <yakui.zhao@intel.com> | 2010-01-04 16:29:31 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-01-18 10:19:25 -0800 |
| commit | c04fd308e3d6148c3c8bcba688c668569759b29c (patch) | |
| tree | c1c44551a0d8661b8651ee25dff449d38e378be7 /drivers | |
| parent | cba0270924c7a6be1f30abd854ebdb3e0df6fb81 (diff) | |
drm/i915: Make the BPC in FDI rx/transcoder be consistent with that in pipeconf on Ironlake
commit 8faf3b317471179c02db339aa80955a2e88c036d upstream.
Make the BPC in FDI rx/transcoder be consistent with that in pipeconf on Ironlake.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2e7e521ac4d..d02016dc77d 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1473,6 +1473,10 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode) int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B; u32 temp; int tries = 5, j, n; + u32 pipe_bpc; + + temp = I915_READ(pipeconf_reg); + pipe_bpc = temp & PIPE_BPC_MASK; /* XXX: When our outputs are all unaware of DPMS modes other than off * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC. @@ -1504,6 +1508,12 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode) /* enable PCH FDI RX PLL, wait warmup plus DMI latency */ temp = I915_READ(fdi_rx_reg); + /* + * make the BPC in FDI Rx be consistent with that in + * pipeconf reg. + */ + temp &= ~(0x7 << 16); + temp |= (pipe_bpc << 11); I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE | FDI_SEL_PCDCLK | FDI_DP_PORT_WIDTH_X4); /* default 4 lanes */ @@ -1644,6 +1654,12 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode) /* enable PCH transcoder */ temp = I915_READ(transconf_reg); + /* + * make the BPC in transcoder be consistent with + * that in pipeconf reg. + */ + temp &= ~PIPE_BPC_MASK; + temp |= pipe_bpc; I915_WRITE(transconf_reg, temp | TRANS_ENABLE); I915_READ(transconf_reg); @@ -1722,6 +1738,9 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode) I915_READ(fdi_tx_reg); temp = I915_READ(fdi_rx_reg); + /* BPC in FDI rx is consistent with that in pipeconf */ + temp &= ~(0x07 << 16); + temp |= (pipe_bpc << 11); I915_WRITE(fdi_rx_reg, temp & ~FDI_RX_ENABLE); I915_READ(fdi_rx_reg); @@ -1765,7 +1784,12 @@ static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode) } } } - + temp = I915_READ(transconf_reg); + /* BPC in transcoder is consistent with that in pipeconf */ + temp &= ~PIPE_BPC_MASK; + temp |= pipe_bpc; + I915_WRITE(transconf_reg, temp); + I915_READ(transconf_reg); udelay(100); /* disable PCH DPLL */ |