diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_dp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 39 |
1 files changed, 3 insertions, 36 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 84652ca3b16..b2130bc6c29 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -790,39 +790,6 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, return false; } -struct intel_dp_m_n { - uint32_t tu; - uint32_t gmch_m; - uint32_t gmch_n; - uint32_t link_m; - uint32_t link_n; -}; - -static void -intel_reduce_ratio(uint32_t *num, uint32_t *den) -{ - while (*num > 0xffffff || *den > 0xffffff) { - *num >>= 1; - *den >>= 1; - } -} - -static void -intel_dp_compute_m_n(int bpp, - int nlanes, - int pixel_clock, - int link_clock, - struct intel_dp_m_n *m_n) -{ - m_n->tu = 64; - m_n->gmch_m = (pixel_clock * bpp) >> 3; - m_n->gmch_n = link_clock * nlanes; - intel_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n); - m_n->link_m = pixel_clock; - m_n->link_n = link_clock; - intel_reduce_ratio(&m_n->link_m, &m_n->link_n); -} - void intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) @@ -833,7 +800,7 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, struct drm_i915_private *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); int lane_count = 4; - struct intel_dp_m_n m_n; + struct intel_link_m_n m_n; int pipe = intel_crtc->pipe; enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder; @@ -856,8 +823,8 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, * the number of bytes_per_pixel post-LUT, which we always * set up for 8-bits of R/G/B, or 3 bytes total. */ - intel_dp_compute_m_n(intel_crtc->bpp, lane_count, - mode->clock, adjusted_mode->clock, &m_n); + intel_link_compute_m_n(intel_crtc->bpp, lane_count, + mode->clock, adjusted_mode->clock, &m_n); if (IS_HASWELL(dev)) { I915_WRITE(PIPE_DATA_M1(cpu_transcoder), |