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[v3,05/19] drm/i915: Pimp AUX CH names

Message ID 20201028213323.5423-6-ville.syrjala@linux.intel.com
State New, archived
Headers show
Series drm/i915: Futher cleanup around hpd pins and port identfiers | expand

Commit Message

Ville Syrjälä Oct. 28, 2020, 9:33 p.m. UTC
From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Let's make the AUX CH names match the spec (AUX A-F for pre-tgl,
AUX A-C or AUX USBC1-6 for tgl+). And while at it let's include
the full encoder name in the AUX CH name as well (as opposed to
just using port_name() which wouldn't give us the right thing on
tgl+).

Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index b4f824383fe0..cf09aca7607b 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1859,6 +1859,7 @@  intel_dp_aux_init(struct intel_dp *intel_dp)
 	struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
 	struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
 	struct intel_encoder *encoder = &dig_port->base;
+	enum aux_ch aux_ch = dig_port->aux_ch;
 
 	if (INTEL_GEN(dev_priv) >= 12) {
 		intel_dp->aux_ch_ctl_reg = tgl_aux_ctl_reg;
@@ -1891,9 +1892,15 @@  intel_dp_aux_init(struct intel_dp *intel_dp)
 	drm_dp_aux_init(&intel_dp->aux);
 
 	/* Failure to allocate our preferred name is not critical */
-	intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX %c/port %c",
-				       aux_ch_name(dig_port->aux_ch),
-				       port_name(encoder->port));
+	if (INTEL_GEN(dev_priv) >= 12 && aux_ch >= AUX_CH_USBC1)
+		intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX USBC%c/%s",
+					       aux_ch - AUX_CH_USBC1 + '1',
+					       encoder->base.name);
+	else
+		intel_dp->aux.name = kasprintf(GFP_KERNEL, "AUX %c/%s",
+					       aux_ch_name(aux_ch),
+					       encoder->base.name);
+
 	intel_dp->aux.transfer = intel_dp_aux_transfer;
 }