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From: Sven Peter <sven@svenpeter.dev>
To: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: "Sven Peter" <sven@svenpeter.dev>,
	"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
	"Guido Günther" <agx@sigxcpu.org>,
	"Hector Martin" <marcan@marcan.st>,
	"Alyssa Rosenzweig" <alyssa@rosenzweig.io>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] usb: typec: tipd: Forward plug orientation to typec subsystem
Date: Sat, 26 Feb 2022 13:59:12 +0100	[thread overview]
Message-ID: <20220226125912.59828-1-sven@svenpeter.dev> (raw)

In order to bring up the USB3 PHY on the Apple M1 we need to know the
orientation of the Type-C cable. Extract it from the status register and
forward it to the typec subsystem.

Signed-off-by: Sven Peter <sven@svenpeter.dev>
---
 drivers/usb/typec/tipd/core.c     | 5 +++++
 drivers/usb/typec/tipd/tps6598x.h | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index 7ffcda94d323..16b4560216ba 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -256,6 +256,10 @@ static int tps6598x_connect(struct tps6598x *tps, u32 status)
 	typec_set_pwr_opmode(tps->port, mode);
 	typec_set_pwr_role(tps->port, TPS_STATUS_TO_TYPEC_PORTROLE(status));
 	typec_set_vconn_role(tps->port, TPS_STATUS_TO_TYPEC_VCONN(status));
+	if (TPS_STATUS_TO_UPSIDE_DOWN(status))
+		typec_set_orientation(tps->port, TYPEC_ORIENTATION_REVERSE);
+	else
+		typec_set_orientation(tps->port, TYPEC_ORIENTATION_NORMAL);
 	tps6598x_set_data_role(tps, TPS_STATUS_TO_TYPEC_DATAROLE(status), true);
 
 	tps->partner = typec_register_partner(tps->port, &desc);
@@ -278,6 +282,7 @@ static void tps6598x_disconnect(struct tps6598x *tps, u32 status)
 	typec_set_pwr_opmode(tps->port, TYPEC_PWR_MODE_USB);
 	typec_set_pwr_role(tps->port, TPS_STATUS_TO_TYPEC_PORTROLE(status));
 	typec_set_vconn_role(tps->port, TPS_STATUS_TO_TYPEC_VCONN(status));
+	typec_set_orientation(tps->port, TYPEC_ORIENTATION_NONE);
 	tps6598x_set_data_role(tps, TPS_STATUS_TO_TYPEC_DATAROLE(status), false);
 
 	power_supply_changed(tps->psy);
diff --git a/drivers/usb/typec/tipd/tps6598x.h b/drivers/usb/typec/tipd/tps6598x.h
index 3dae84c524fb..527857549d69 100644
--- a/drivers/usb/typec/tipd/tps6598x.h
+++ b/drivers/usb/typec/tipd/tps6598x.h
@@ -17,6 +17,7 @@
 /* TPS_REG_STATUS bits */
 #define TPS_STATUS_PLUG_PRESENT		BIT(0)
 #define TPS_STATUS_PLUG_UPSIDE_DOWN	BIT(4)
+#define TPS_STATUS_TO_UPSIDE_DOWN(s)	(!!((s) & TPS_STATUS_PLUG_UPSIDE_DOWN))
 #define TPS_STATUS_PORTROLE		BIT(5)
 #define TPS_STATUS_TO_TYPEC_PORTROLE(s) (!!((s) & TPS_STATUS_PORTROLE))
 #define TPS_STATUS_DATAROLE		BIT(6)
-- 
2.25.1


             reply	other threads:[~2022-02-26 13:06 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-02-26 12:59 Sven Peter [this message]
2022-03-02 12:06 ` [PATCH] usb: typec: tipd: Forward plug orientation to typec subsystem Heikki Krogerus

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