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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-10-22 22:56:43 +0200 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2012-10-22 22:56:43 +0200 |
| commit | 397fe15715ef1457d89f52666d0e249eb5eae64c (patch) | |
| tree | 7948bc52fa7ac208ddf2d1261e5c485dbb25ae52 | |
| parent | drm: extract dp link bw helpers (diff) | |
| download | linux-397fe15715ef1457d89f52666d0e249eb5eae64c.tar.xz linux-397fe15715ef1457d89f52666d0e249eb5eae64c.zip | |
drm: extract drm_dp_max_lane_count helper
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 17 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_dp.c | 7 | ||||
| -rw-r--r-- | include/drm/drm_dp_helper.h | 7 |
3 files changed, 10 insertions, 21 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index f7b7bfc455e2..e0b91cb75d63 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -125,19 +125,6 @@ intel_edp_target_clock(struct intel_encoder *intel_encoder, } static int -intel_dp_max_lane_count(struct intel_dp *intel_dp) -{ - int max_lane_count = intel_dp->dpcd[DP_MAX_LANE_COUNT] & 0x1f; - switch (max_lane_count) { - case 1: case 2: case 4: - break; - default: - max_lane_count = 4; - } - return max_lane_count; -} - -static int intel_dp_max_link_bw(struct intel_dp *intel_dp) { int max_link_bw = intel_dp->dpcd[DP_MAX_LINK_RATE]; @@ -197,7 +184,7 @@ intel_dp_adjust_dithering(struct intel_dp *intel_dp, bool adjust_mode) { int max_link_clock = intel_dp_link_clock(intel_dp_max_link_bw(intel_dp)); - int max_lanes = intel_dp_max_lane_count(intel_dp); + int max_lanes = drm_dp_max_lane_count(intel_dp->dpcd); int max_rate, mode_rate; mode_rate = intel_dp_link_required(mode->clock, 24); @@ -699,7 +686,7 @@ intel_dp_mode_fixup(struct drm_encoder *encoder, struct intel_dp *intel_dp = enc_to_intel_dp(encoder); struct intel_connector *intel_connector = intel_dp->attached_connector; int lane_count, clock; - int max_lane_count = intel_dp_max_lane_count(intel_dp); + int max_lane_count = drm_dp_max_lane_count(intel_dp->dpcd); int max_clock = intel_dp_max_link_bw(intel_dp) == DP_LINK_BW_2_7 ? 1 : 0; int bpp, mode_rate; static int bws[2] = { DP_LINK_BW_1_62, DP_LINK_BW_2_7 }; diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 093e17d07574..064023bed480 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -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; diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h index 455f8e05ca3f..c09d36741c94 100644 --- a/include/drm/drm_dp_helper.h +++ b/include/drm/drm_dp_helper.h @@ -346,4 +346,11 @@ drm_dp_max_link_rate(u8 dpcd[DP_RECEIVER_CAP_SIZE]) { return drm_dp_bw_code_to_link_rate(dpcd[DP_MAX_LINK_RATE]); } + +static inline u8 +drm_dp_max_lane_count(u8 dpcd[DP_RECEIVER_CAP_SIZE]) +{ + return dpcd[DP_MAX_LANE_COUNT] & DP_MAX_LANE_COUNT_MASK; +} + #endif /* _DRM_DP_HELPER_H_ */ |