linux-kernel - [PATCH RFC 16/22] usb: typec: tipd: Use read_power

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Message-Id: <20250821-atcphy-6-17-v1-16-172beda182b8@kernel.org>
Date: Thu, 21 Aug 2025 15:39:08 +0000
From: Sven Peter <sven@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Felipe Balbi <balbi@...nel.org>, 
 Janne Grunau <j@...nau.net>, Alyssa Rosenzweig <alyssa@...enzweig.io>, 
 Neal Gompa <neal@...pa.dev>, Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>, 
 Heikki Krogerus <heikki.krogerus@...ux.intel.com>, 
 Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, asahi@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-phy@...ts.infradead.org, 
 Sven Peter <sven@...nel.org>, Hector Martin <marcan@...can.st>
Subject: [PATCH RFC 16/22] usb: typec: tipd: Use read_power_status function
 in probe

From: Hector Martin <marcan@...can.st>

We need the initial power status to be able to reliably detect connector
changes once we introduce de-bouncing for CD321x next. read_power_status
takes care of this and also forwards the status to the trace subsystem
so let's use that instead of open-coding it inside probe.

Signed-off-by: Hector Martin <marcan@...can.st>
Signed-off-by: Sven Peter <sven@...nel.org>
---
 drivers/usb/typec/tipd/core.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index b0fdd4dddd3a490dbc2a8ced21ea0803658f36a7..2b7c5017a347d153b50383b34123a2ecc424eb68 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -1552,11 +1552,8 @@ static int tps6598x_probe(struct i2c_client *client)
 		goto err_role_put;
 
 	if (status & TPS_STATUS_PLUG_PRESENT) {
-		ret = tps6598x_read16(tps, TPS_REG_POWER_STATUS, &tps->pwr_status);
-		if (ret < 0) {
-			dev_err(tps->dev, "failed to read power status: %d\n", ret);
+		if (!tps6598x_read_power_status(tps))
 			goto err_unregister_port;
-		}
 		ret = tps6598x_connect(tps, status);
 		if (ret)
 			dev_err(&client->dev, "failed to register partner\n");

-- 
2.34.1