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drm: dp helper: extract drm_dp_channel_eq_ok

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radeon and intel use the exact same definition.

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
2012-10-18 10:15:24 +02:00
parent 00ae9a456d
commit 1ffdff134e
4 changed files with 59 additions and 55 deletions
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24
drivers/gpu/drm/radeon/atombios_dp.c
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@@ -34,7 +34,6 @@
/* move these to drm_dp_helper.c/h */
#define DP_LINK_CONFIGURATION_SIZE 9
#define DP_LINK_STATUS_SIZE 6
#define DP_DPCD_SIZE 8
static char *voltage_names[] = {
@@ -318,25 +317,6 @@ static bool dp_clock_recovery_ok(u8 link_status[DP_LINK_STATUS_SIZE],
return true;
}
static bool dp_channel_eq_ok(u8 link_status[DP_LINK_STATUS_SIZE],
int lane_count)
{
u8 lane_align;
u8 lane_status;
int lane;
lane_align = dp_link_status(link_status,
DP_LANE_ALIGN_STATUS_UPDATED);
if ((lane_align & DP_INTERLANE_ALIGN_DONE) == 0)
return false;
for (lane = 0; lane < lane_count; lane++) {
lane_status = dp_get_lane_status(link_status, lane);
if ((lane_status & DP_CHANNEL_EQ_BITS) != DP_CHANNEL_EQ_BITS)
return false;
}
return true;
}
static u8 dp_get_adjust_request_voltage(u8 link_status[DP_LINK_STATUS_SIZE],
int lane)
@@ -664,7 +644,7 @@ bool radeon_dp_needs_link_train(struct radeon_connector *radeon_connector)
if (!radeon_dp_get_link_status(radeon_connector, link_status))
return false;
if (dp_channel_eq_ok(link_status, dig->dp_lane_count))
if (drm_dp_channel_eq_ok(link_status, dig->dp_lane_count))
return false;
return true;
}
@@ -896,7 +876,7 @@ static int radeon_dp_link_train_ce(struct radeon_dp_link_train_info *dp_info)
break;
}
if (dp_channel_eq_ok(dp_info->link_status, dp_info->dp_lane_count)) {
if (drm_dp_channel_eq_ok(dp_info->link_status, dp_info->dp_lane_count)) {
channel_eq = true;
break;
}