diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/atombios_dp.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/atombios_dp.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c index 44ee72e04df9..afa9db1dc0e3 100644 --- a/drivers/gpu/drm/radeon/atombios_dp.c +++ b/drivers/gpu/drm/radeon/atombios_dp.c @@ -37,10 +37,10 @@ #define DP_DPCD_SIZE DP_RECEIVER_CAP_SIZE static char *voltage_names[] = { - "0.4V", "0.6V", "0.8V", "1.2V" + "0.4V", "0.6V", "0.8V", "1.2V" }; static char *pre_emph_names[] = { - "0dB", "3.5dB", "6dB", "9.5dB" + "0dB", "3.5dB", "6dB", "9.5dB" }; /***** radeon AUX functions *****/ @@ -315,15 +315,27 @@ int radeon_dp_get_dp_link_config(struct drm_connector *connector, unsigned max_lane_num = drm_dp_max_lane_count(dpcd); unsigned lane_num, i, max_pix_clock; - for (lane_num = 1; lane_num <= max_lane_num; lane_num <<= 1) { - for (i = 0; i < ARRAY_SIZE(link_rates) && link_rates[i] <= max_link_rate; i++) { - max_pix_clock = (lane_num * link_rates[i] * 8) / bpp; + if (radeon_connector_encoder_get_dp_bridge_encoder_id(connector) == + ENCODER_OBJECT_ID_NUTMEG) { + for (lane_num = 1; lane_num <= max_lane_num; lane_num <<= 1) { + max_pix_clock = (lane_num * 270000 * 8) / bpp; if (max_pix_clock >= pix_clock) { *dp_lanes = lane_num; - *dp_rate = link_rates[i]; + *dp_rate = 270000; return 0; } } + } else { + for (lane_num = 1; lane_num <= max_lane_num; lane_num <<= 1) { + for (i = 0; i < ARRAY_SIZE(link_rates) && link_rates[i] <= max_link_rate; i++) { + max_pix_clock = (lane_num * link_rates[i] * 8) / bpp; + if (max_pix_clock >= pix_clock) { + *dp_lanes = lane_num; + *dp_rate = link_rates[i]; + return 0; + } + } + } } return -EINVAL; |