diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c index 2c6db379afae..ef41b287cbe2 100644 --- a/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c +++ b/drivers/gpu/drm/amd/display/dc/calcs/dce_calcs.c @@ -1364,13 +1364,10 @@ static void calculate_bandwidth( /*if stutter and dram clock state change are gated before cursor then the cursor latency hiding does not limit stutter or dram clock state change*/ for (i = 0; i <= maximum_number_of_surfaces - 1; i++) { if (data->enable[i]) { - if (dceip->graphics_lb_nodownscaling_multi_line_prefetching == 1) { - data->maximum_latency_hiding[i] = bw_add(data->minimum_latency_hiding[i], bw_mul(bw_frc_to_fixed(5, 10), data->total_dmifmc_urgent_latency)); - } - else { - /*maximum_latency_hiding(i) = minimum_latency_hiding(i) + 1 / vsr(i) * h_total(i) / pixel_rate(i) + 0.5 * total_dmifmc_urgent_latency*/ - data->maximum_latency_hiding[i] = bw_add(data->minimum_latency_hiding[i], bw_mul(bw_frc_to_fixed(5, 10), data->total_dmifmc_urgent_latency)); - } + /*maximum_latency_hiding(i) = minimum_latency_hiding(i) + 1 / vsr(i) **/ + /* h_total(i) / pixel_rate(i) + 0.5 * total_dmifmc_urgent_latency*/ + data->maximum_latency_hiding[i] = bw_add(data->minimum_latency_hiding[i], + bw_mul(bw_frc_to_fixed(5, 10), data->total_dmifmc_urgent_latency)); data->maximum_latency_hiding_with_cursor[i] = bw_min2(data->maximum_latency_hiding[i], data->cursor_latency_hiding[i]); } } @@ -1980,7 +1977,7 @@ static void calculate_bandwidth( else { data->latency_for_non_mcifwr_clients = bw_int_to_fixed(0); } - /*dmif mc urgent latency suppported in high sclk and yclk*/ + /*dmif mc urgent latency supported in high sclk and yclk*/ data->dmifmc_urgent_latency_supported_in_high_sclk_and_yclk = bw_div((bw_sub(data->min_read_buffer_size_in_time, data->dmif_burst_time[high][s_high])), data->total_dmifmc_urgent_trips); /*dram speed/p-state change margin*/ /*in the multi-display case the nb p-state change watermark cannot exceed the average lb size plus the dmif size or the cursor dcp buffer size*/ |