diff options
| -rw-r--r-- | src/atombios_output.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/atombios_output.c b/src/atombios_output.c index 8d640be4..da766833 100644 --- a/src/atombios_output.c +++ b/src/atombios_output.c @@ -2547,6 +2547,11 @@ static int radeon_dp_link_required(int pixel_clock) return pixel_clock * 3; } +static int link_bw_avail(int max_link_clock, int max_lanes) +{ + return (max_link_clock * max_lanes * 8) / 10; +} + Bool radeon_dp_mode_fixup(xf86OutputPtr output, DisplayModePtr mode, DisplayModePtr adjusted_mode) { RADEONOutputPrivatePtr radeon_output = output->driver_private; @@ -2557,7 +2562,7 @@ Bool radeon_dp_mode_fixup(xf86OutputPtr output, DisplayModePtr mode, DisplayMode for (lane_count = 1; lane_count <= max_lane_count; lane_count <<= 1) { for (clock = 0; clock <= max_clock; clock++) { - int link_avail = radeon_dp_link_clock(bws[clock]) * lane_count; + int link_avail = link_bw_avail(radeon_dp_link_clock(bws[clock]), lane_count); if (radeon_dp_link_required(mode->Clock) <= link_avail) { radeon_output->dp_lane_count = lane_count; |