From 46b527d19c4327897197d09748a8b332e322a1d7 Mon Sep 17 00:00:00 2001 From: Manasi Navare Date: Mon, 11 Jun 2018 15:26:54 -0700 Subject: drm/i915/icl: Add allowed DP rates for Icelake For ICL, on Combo PHY the allowed max rates are: - HBR3 8.1 eDP (DDIA) - HBR2 5.4 DisplayPort (DDIB) and for MG PHY/TC DDI Ports allowed DP rates are: - HBR3 8.1 DisplayPort (DP alternate mode, DP over TBT, - DP on legacy connector - DDIC/D/E/F) v2 (from Paulo): Remove misleading comment (Ville). Cc: Rodrigo Vivi Cc: Jani Nikula Reviewed-by: James Ausmus Signed-off-by: Manasi Navare Signed-off-by: James Ausmus [Paulo: bikeshed to keep future platforms on "else", v2.] Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180611222655.5696-1-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/intel_dp.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/i915/intel_dp.c') diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 67875b00c8df..af5314229ffe 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -256,6 +256,17 @@ static int cnl_max_source_rate(struct intel_dp *intel_dp) return 810000; } +static int icl_max_source_rate(struct intel_dp *intel_dp) +{ + struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp); + enum port port = dig_port->base.port; + + if (port == PORT_B) + return 540000; + + return 810000; +} + static void intel_dp_set_source_rates(struct intel_dp *intel_dp) { @@ -285,10 +296,13 @@ intel_dp_set_source_rates(struct intel_dp *intel_dp) /* This should only be done once */ WARN_ON(intel_dp->source_rates || intel_dp->num_source_rates); - if (IS_CANNONLAKE(dev_priv)) { + if (INTEL_GEN(dev_priv) >= 10) { source_rates = cnl_rates; size = ARRAY_SIZE(cnl_rates); - max_rate = cnl_max_source_rate(intel_dp); + if (INTEL_GEN(dev_priv) == 10) + max_rate = cnl_max_source_rate(intel_dp); + else + max_rate = icl_max_source_rate(intel_dp); } else if (IS_GEN9_LP(dev_priv)) { source_rates = bxt_rates; size = ARRAY_SIZE(bxt_rates); -- cgit v1.2.3-59-g8ed1b