[Intel-gfx] [PATCH v2 16/16] drm/i915: Round TMDS clock to nearest

[Ville Syrjala]

From: Ville Syrjälä <ville.syrj...@linux.intel.com>

Use round-to-nearest behavour when calculating the TMDS clock.
Matches what we do for most other clock related things.

Acked-by: Jani Nikula <jani.nik...@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 3 ++-
 drivers/gpu/drm/i915/display/intel_hdmi.c    | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
b/drivers/gpu/drm/i915/display/intel_display.c
index 7e45dd99d03c..1ec9f3d54031 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4585,7 +4585,8 @@ int intel_crtc_dotclock(const struct intel_crtc_state 
*pipe_config)
                dotclock = intel_dotclock_calculate(pipe_config->port_clock,
                                                    &pipe_config->dp_m_n);
        else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp > 24)
-               dotclock = pipe_config->port_clock * 24 / pipe_config->pipe_bpp;
+               dotclock = DIV_ROUND_CLOSEST(pipe_config->port_clock * 24,
+                                            pipe_config->pipe_bpp);
        else
                dotclock = pipe_config->port_clock;
 
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c 
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 1ae09431f53a..0b04b3800cd4 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -1891,7 +1891,7 @@ int intel_hdmi_tmds_clock(int clock, int bpc, bool 
ycbcr420_output)
         *  1.5x for 12bpc
         *  1.25x for 10bpc
         */
-       return clock * bpc / 8;
+       return DIV_ROUND_CLOSEST(clock * bpc, 8);
 }
 
 static bool intel_hdmi_source_bpc_possible(struct drm_i915_private *i915, int 
bpc)
-- 
2.35.1