[Intel-gfx] [PATCH v2] drm/i915: Audio N value computed for pixel doubled modes

[clinton.a.taylor at intel.com]

From: Clint Taylor <clinton.a.taylor at intel.com>

HDMI audio clock config was incorrectly choosing the default for
pixel doubled interlaced modes. The table was missing pixel clock
values 13.500 (27.000) and 13.513 (27.027). Luckily the default N
value for 25.200 is the same N value for both 27MHz pixel clocks,
a warning message was being printed with drm.debug set.

ver2: Use 13500 * 1001 / 1000 instead of 13513 constant.

Cc: Jani Nikula <jani.nikula at intel.com>

Signed-off-by: Clint Taylor <clinton.a.taylor at intel.com>
---
 drivers/gpu/drm/i915/intel_display.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 858011d..e76a4106 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7872,6 +7872,8 @@ static struct {
 	{ 74250, AUD_CONFIG_PIXEL_CLOCK_HDMI_74250 },
 	{ DIV_ROUND_UP(148500 * 1000, 1001), AUD_CONFIG_PIXEL_CLOCK_HDMI_148352 },
 	{ 148500, AUD_CONFIG_PIXEL_CLOCK_HDMI_148500 },
+	{ 13500, AUD_CONFIG_PIXEL_CLOCK_HDMI_27000 },
+	{ 13500 * 1001 / 1000, AUD_CONFIG_PIXEL_CLOCK_HDMI_27027 },
 };
 
 /* get AUD_CONFIG_PIXEL_CLOCK_HDMI_* value for mode */
-- 
1.7.9.5