diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_alpm.c | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c index dfdde8e4eabe..e48a4218c163 100644 --- a/drivers/gpu/drm/i915/display/intel_alpm.c +++ b/drivers/gpu/drm/i915/display/intel_alpm.c @@ -16,6 +16,12 @@ #include "intel_psr.h" #include "intel_psr_regs.h" +#define SILENCE_PERIOD_MIN_TIME 80 +#define SILENCE_PERIOD_MAX_TIME 180 +#define SILENCE_PERIOD_TIME (SILENCE_PERIOD_MIN_TIME + \ + (SILENCE_PERIOD_MAX_TIME - \ + SILENCE_PERIOD_MIN_TIME) / 2) + bool intel_alpm_aux_wake_supported(struct intel_dp *intel_dp) { return intel_dp->alpm_dpcd & DP_ALPM_CAP; @@ -44,11 +50,15 @@ void intel_alpm_init(struct intel_dp *intel_dp) mutex_init(&intel_dp->alpm_parameters.lock); } +static int get_silence_period_symbols(const struct intel_crtc_state *crtc_state) +{ + return SILENCE_PERIOD_TIME * intel_dp_link_symbol_clock(crtc_state->port_clock) / + 1000 / 1000; +} + /* * See Bspec: 71632 for the table * - * Silence_period = tSilence,Min + ((tSilence,Max - tSilence,Min) / 2) - * * Half cycle duration: * * Link rates 1.62 - 4.32 and tLFPS_Cycle = 70 ns @@ -60,53 +70,41 @@ void intel_alpm_init(struct intel_dp *intel_dp) * FLOOR( LFPS Period in Symbol clocks / * (2 * PORT_ALPM_LFPS_CTL[ LFPS Cycle Count ]) ) */ -static bool _lnl_get_silence_period_and_lfps_half_cycle(int link_rate, - int *silence_period, - int *lfps_half_cycle) +static bool _lnl_get_lfps_half_cycle(int link_rate, int *lfps_half_cycle) { switch (link_rate) { case 162000: - *silence_period = 20; *lfps_half_cycle = 5; break; case 216000: - *silence_period = 27; *lfps_half_cycle = 7; break; case 243000: - *silence_period = 31; *lfps_half_cycle = 8; break; case 270000: - *silence_period = 34; *lfps_half_cycle = 9; break; case 324000: - *silence_period = 41; *lfps_half_cycle = 11; break; case 432000: - *silence_period = 56; *lfps_half_cycle = 15; break; case 540000: - *silence_period = 69; *lfps_half_cycle = 12; break; case 648000: - *silence_period = 84; *lfps_half_cycle = 15; break; case 675000: - *silence_period = 87; *lfps_half_cycle = 15; break; case 810000: - *silence_period = 104; *lfps_half_cycle = 19; break; default: - *silence_period = *lfps_half_cycle = -1; + *lfps_half_cycle = -1; return false; } return true; @@ -160,10 +158,9 @@ _lnl_compute_aux_less_alpm_params(struct intel_dp *intel_dp, _lnl_compute_aux_less_wake_time(crtc_state->port_clock); aux_less_wake_lines = intel_usecs_to_scanlines(&crtc_state->hw.adjusted_mode, aux_less_wake_time); - - if (!_lnl_get_silence_period_and_lfps_half_cycle(crtc_state->port_clock, - &silence_period, - &lfps_half_cycle)) + silence_period = get_silence_period_symbols(crtc_state); + if (!_lnl_get_lfps_half_cycle(crtc_state->port_clock, + &lfps_half_cycle)) return false; if (aux_less_wake_lines > ALPM_CTL_AUX_LESS_WAKE_TIME_MASK || |