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drm: extract drm_dp_max_lane_count helper

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Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter
2012-10-22 22:56:43 +02:00
parent 3b5c662e8f
commit 397fe15715
3 changed files with 10 additions and 21 deletions
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7
drivers/gpu/drm/radeon/atombios_dp.c
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@@ -347,11 +347,6 @@ static int dp_get_max_dp_pix_clock(int link_rate,
return (link_rate * lane_num * 8) / bpp;
}
static u8 dp_get_max_lane_number(u8 dpcd[DP_DPCD_SIZE])
{
return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK;
}
/***** radeon specific DP functions *****/
/* First get the min lane# when low rate is used according to pixel clock
@@ -364,7 +359,7 @@ static int radeon_dp_get_dp_lane_number(struct drm_connector *connector,
{
int bpp = convert_bpc_to_bpp(radeon_get_monitor_bpc(connector));
int max_link_rate = drm_dp_max_link_rate(dpcd);
int max_lane_num = dp_get_max_lane_number(dpcd);
int max_lane_num = drm_dp_max_lane_count(dpcd);
int lane_num;
int max_dp_pix_clock;