Divide the auxless wake time calculation in parts which will help later to add Xe3p related modification.
v2: Refactor first existing calculation. [Jani] v3: Cosmetic changes. [Jani, Suraj] Bspec: 71477 Cc: Jouni Högander <[email protected]> Signed-off-by: Animesh Manna <[email protected]> --- drivers/gpu/drm/i915/display/intel_alpm.c | 31 ++++++++++++++++------- 1 file changed, 22 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_alpm.c b/drivers/gpu/drm/i915/display/intel_alpm.c index 3e271de5504b..b4b874dd3725 100644 --- a/drivers/gpu/drm/i915/display/intel_alpm.c +++ b/drivers/gpu/drm/i915/display/intel_alpm.c @@ -98,6 +98,25 @@ static int get_lfps_half_cycle_clocks(const struct intel_crtc_state *crtc_state) 1000 / (2 * LFPS_CYCLE_COUNT); } +static int get_tphy2_p2_to_p0(const struct intel_crtc_state *crtc_state) +{ + return 12 * 1000; +} + +static int get_establishment_period(const struct intel_crtc_state *crtc_state) +{ + int t1 = 50 * 1000; + int tps4 = 252; + /* port_clock is link rate in 10kbit/s units */ + int tml_phy_lock = 1000 * 1000 * tps4 / crtc_state->port_clock; + int tcds, establishment_period; + + tcds = (7 + DIV_ROUND_UP(6500, tml_phy_lock) + 1) * tml_phy_lock; + establishment_period = (SILENCE_PERIOD_TIME + t1 + tcds); + + return establishment_period; +} + /* * AUX-Less Wake Time = CEILING( ((PHY P2 to P0) + tLFPS_Period, Max+ * tSilence, Max+ tPHY Establishment + tCDS) / tline) @@ -119,17 +138,11 @@ static int get_lfps_half_cycle_clocks(const struct intel_crtc_state *crtc_state) */ static int _lnl_compute_aux_less_wake_time(const struct intel_crtc_state *crtc_state) { - int tphy2_p2_to_p0 = 12 * 1000; - int t1 = 50 * 1000; - int tps4 = 252; - /* port_clock is link rate in 10kbit/s units */ - int tml_phy_lock = 1000 * 1000 * tps4 / crtc_state->port_clock; - int num_ml_phy_lock = 7 + DIV_ROUND_UP(6500, tml_phy_lock) + 1; - int t2 = num_ml_phy_lock * tml_phy_lock; - int tcds = 1 * t2; + int tphy2_p2_to_p0 = get_tphy2_p2_to_p0(crtc_state); + int establishment_period = get_establishment_period(crtc_state); return DIV_ROUND_UP(tphy2_p2_to_p0 + get_lfps_cycle_time(crtc_state) + - SILENCE_PERIOD_TIME + t1 + tcds, 1000); + establishment_period, 1000); } static int -- 2.29.0
