drm/i915/tgl+: Make sure TypeC FIA is powered up when initializing it
The TypeC FIA can be powered down if the TC-COLD power state is allowed, so block the TC-COLD state when initializing the FIA. Note that this isn't needed on ICL where the FIA is never modular and which has no generic way to block TC-COLD (except for platforms with a legacy TypeC port and on those too only via these legacy ports, not via a DP-alt/TBT port). Cc: <stable@vger.kernel.org> # v5.10+ Cc: José Roberto de Souza <jose.souza@intel.com> Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3027 Signed-off-by: Imre Deak <imre.deak@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210208154303.6839-1-imre.deak@intel.com Reviewed-by: Jos� Roberto de Souza <jose.souza@intel.com> (cherry picked from commit f48993e5d26b079e8c80fff002499a213dbdb1b4) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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@ -23,36 +23,6 @@ static const char *tc_port_mode_name(enum tc_port_mode mode)
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return names[mode];
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}
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static void
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tc_port_load_fia_params(struct drm_i915_private *i915,
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struct intel_digital_port *dig_port)
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{
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enum port port = dig_port->base.port;
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enum tc_port tc_port = intel_port_to_tc(i915, port);
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u32 modular_fia;
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if (INTEL_INFO(i915)->display.has_modular_fia) {
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modular_fia = intel_uncore_read(&i915->uncore,
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PORT_TX_DFLEXDPSP(FIA1));
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drm_WARN_ON(&i915->drm, modular_fia == 0xffffffff);
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modular_fia &= MODULAR_FIA_MASK;
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} else {
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modular_fia = 0;
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}
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/*
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* Each Modular FIA instance houses 2 TC ports. In SOC that has more
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* than two TC ports, there are multiple instances of Modular FIA.
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*/
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if (modular_fia) {
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dig_port->tc_phy_fia = tc_port / 2;
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dig_port->tc_phy_fia_idx = tc_port % 2;
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} else {
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dig_port->tc_phy_fia = FIA1;
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dig_port->tc_phy_fia_idx = tc_port;
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}
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}
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static enum intel_display_power_domain
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tc_cold_get_power_domain(struct intel_digital_port *dig_port)
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{
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@ -646,6 +616,43 @@ void intel_tc_port_put_link(struct intel_digital_port *dig_port)
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mutex_unlock(&dig_port->tc_lock);
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}
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static bool
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tc_has_modular_fia(struct drm_i915_private *i915, struct intel_digital_port *dig_port)
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{
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intel_wakeref_t wakeref;
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u32 val;
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if (!INTEL_INFO(i915)->display.has_modular_fia)
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return false;
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wakeref = tc_cold_block(dig_port);
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val = intel_uncore_read(&i915->uncore, PORT_TX_DFLEXDPSP(FIA1));
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tc_cold_unblock(dig_port, wakeref);
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drm_WARN_ON(&i915->drm, val == 0xffffffff);
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return val & MODULAR_FIA_MASK;
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}
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static void
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tc_port_load_fia_params(struct drm_i915_private *i915, struct intel_digital_port *dig_port)
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{
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enum port port = dig_port->base.port;
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enum tc_port tc_port = intel_port_to_tc(i915, port);
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/*
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* Each Modular FIA instance houses 2 TC ports. In SOC that has more
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* than two TC ports, there are multiple instances of Modular FIA.
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*/
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if (tc_has_modular_fia(i915, dig_port)) {
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dig_port->tc_phy_fia = tc_port / 2;
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dig_port->tc_phy_fia_idx = tc_port % 2;
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} else {
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dig_port->tc_phy_fia = FIA1;
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dig_port->tc_phy_fia_idx = tc_port;
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}
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}
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void intel_tc_port_init(struct intel_digital_port *dig_port, bool is_legacy)
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{
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struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
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