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fix broken patch

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EvilOlaf 2026-01-08 13:04:03 +00:00 committed by Werner
parent e38d028214
commit 45aac305ac
1 changed files with 15 additions and 20 deletions
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29
patch/kernel/archive/sunxi-6.12/patches.megous/usb-typec-altmodes-displayport-Respect-DP_CAP_RECEPTACLE-bit.patch
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@ -1,4 +1,4 @@
From 4924272fe0385296f3e06d7f9aff5166815c86db Mon Sep 17 00:00:00 2001
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Ondrej Jirman <megi@xff.cz>
Date: Mon, 5 Sep 2022 00:56:07 +0200
Subject: usb: typec: altmodes: displayport: Respect DP_CAP_RECEPTACLE bit
@ -14,16 +14,13 @@ wrong VDO.
Signed-off-by: Ondrej Jirman <megi@xff.cz>
---
drivers/usb/typec/altmodes/displayport.c | 48 ++++++++++++++++++++++--
1 file changed, 44 insertions(+), 4 deletions(-)
drivers/usb/typec/altmodes/displayport.c | 50 ++++++++++++++++++++++++++++----
1 file changed, 45 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/typec/altmodes/displayport.c b/drivers/usb/typec/altmodes/displayport.c
index 6964f403a2d5..9af15469fc3a 100644
index 111111111111..222222222222 100644
--- a/drivers/usb/typec/altmodes/displayport.c
+++ b/drivers/usb/typec/altmodes/displayport.c
@@ -116,11 +116,29 @@ static int dp_altmode_configure(struct dp_altmode *dp, u8 con)
/* Account for active cable capabilities */
if (dp->plug_prime)
pin_assign &= DP_CAP_UFP_D_PIN_ASSIGN(dp->plug_prime->vdo);
+
+ /*
@ -45,21 +42,21 @@ index 6964f403a2d5..9af15469fc3a 100644
break;
}
+
+ dev_info(&dp->alt->dev, "con=%d pin_assign=%x (port=%x alt=%x)\n",
+ (int)con, (unsigned)pin_assign, dp->port->vdo, dp->alt->vdo);
+
/* Determining the initial pin assignment. */
if (!DP_CONF_GET_PIN_ASSIGN(dp->data.conf)) {
/* Is USB together with DP preferred */
@@ -729,15 +747,37 @@ int dp_altmode_probe(struct typec_altmode *alt)
struct typec_altmode *plug = typec_altmode_get_plug(alt, TYPEC_PLUG_SOP_P);
@@ -730,13 +749,35 @@
struct fwnode_handle *fwnode;
struct dp_altmode *dp;
+ u32 port_pins, alt_pins;
+ u32 port_pins, alt_pins;
/* FIXME: Port can only be DFP_U. */
+ /*
+/*
+ * When port is a receptacle DP_CAP_xFP_D_PIN_ASSIGN macros have the
+ * regular meaning. When the port is a plug, the meaning is swapped.
+ *
@ -77,6 +74,7 @@ index 6964f403a2d5..9af15469fc3a 100644
+ if (!(port->vdo & DP_CAP_RECEPTACLE) && !(alt->vdo & DP_CAP_RECEPTACLE)) {
+ dev_warn(&alt->dev, "Our Alt-DP VDO 0x%06x and peer port VDO 0x%06x are not compatible (both are reported as plugs!)\n",
+ port->vdo, alt->vdo);
+ typec_altmode_put_plug(plug);
+ return -ENODEV;
+ }
+
@ -84,15 +82,12 @@ index 6964f403a2d5..9af15469fc3a 100644
- if (!(DP_CAP_PIN_ASSIGN_DFP_D(port->vdo) &
- DP_CAP_PIN_ASSIGN_UFP_D(alt->vdo)) &&
- !(DP_CAP_PIN_ASSIGN_UFP_D(port->vdo) &
- DP_CAP_PIN_ASSIGN_DFP_D(alt->vdo)))
- DP_CAP_PIN_ASSIGN_DFP_D(alt->vdo))) {
+ if (!(port_pins & alt_pins)) {
+ dev_warn(&alt->dev, "Our Alt-DP VDO 0x%06x and peer port VDO 0x%06x are not compatible (no shared pinconf %04x<->%04x (UUDD))\n",
+ port->vdo, alt->vdo, port_pins, alt_pins);
typec_altmode_put_plug(plug);
return -ENODEV;
+ }
dp = devm_kzalloc(&alt->dev, sizeof(*dp), GFP_KERNEL);
if (!dp)
}
--
2.43.0