diff options
| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-10-13 02:01:33 +0400 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-10-21 10:21:55 +0400 |
| commit | d64311ab4bd8d1c1e984ce3f0e772266dde95380 (patch) | |
| tree | ed53347c191a944243317a9fc79a4b22f2822cb4 /drivers/gpu | |
| parent | 65a21cd65316145f9302594be8e69074369e1050 (diff) | |
| download | linux-d64311ab4bd8d1c1e984ce3f0e772266dde95380.tar.xz | |
drm/i915: fix transcoder PLL select masking
Transcoder A will always use PLL A and transcoder B will use PLL B. But
transcoder C could use either, so always mask the select bits off before
or'ing in a new value.
Reported-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-By: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-By: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2371a8e38047..ed5d4f4d702e 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2906,12 +2906,16 @@ static void ironlake_pch_enable(struct drm_crtc *crtc) /* Be sure PCH DPLL SEL is set */ temp = I915_READ(PCH_DPLL_SEL); - if (pipe == 0 && (temp & TRANSA_DPLL_ENABLE) == 0) + if (pipe == 0) { + temp &= ~(TRANSA_DPLLB_SEL); temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL); - else if (pipe == 1 && (temp & TRANSB_DPLL_ENABLE) == 0) + } else if (pipe == 1) { + temp &= ~(TRANSB_DPLLB_SEL); temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL); - else if (pipe == 2 && (temp & TRANSC_DPLL_ENABLE) == 0) + } else if (pipe == 2) { + temp &= ~(TRANSC_DPLLB_SEL); temp |= (TRANSC_DPLL_ENABLE | transc_sel); + } I915_WRITE(PCH_DPLL_SEL, temp); } @@ -3077,14 +3081,14 @@ static void ironlake_crtc_disable(struct drm_crtc *crtc) temp = I915_READ(PCH_DPLL_SEL); switch (pipe) { case 0: - temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL); + temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL); break; case 1: temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL); break; case 2: /* C shares PLL A or B */ - temp &= ~(TRANSC_DPLL_ENABLE | TRANSB_DPLLB_SEL); + temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL); break; default: BUG(); /* wtf */ @@ -5590,6 +5594,7 @@ static int ironlake_crtc_mode_set(struct drm_crtc *crtc, temp |= TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL; break; case 2: + temp &= ~(TRANSC_DPLLB_SEL); temp |= TRANSC_DPLL_ENABLE | transc_sel; break; default: |