linux-kernel - [PATCH v8 07/14] USB: typec: tps6598x: Apply patch again after power resume

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Message-Id: <20230929143055.31360-8-alkuor@gmail.com>
Date:   Fri, 29 Sep 2023 10:30:48 -0400
From:   Abdel Alkuor <alkuor@...il.com>
To:     heikki.krogerus@...ux.intel.com, krzysztof.kozlowski+dt@...aro.org,
        bryan.odonoghue@...aro.org
Cc:     gregkh@...uxfoundation.org, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, ryan.eleceng@...il.com,
        robh+dt@...nel.org, conor+dt@...nel.org,
        devicetree@...r.kernel.org, Abdel Alkuor <abdelalkuor@...tab.com>
Subject: [PATCH v8 07/14] USB: typec: tps6598x: Apply patch again after power resume

From: Abdel Alkuor <abdelalkuor@...tab.com>

TPS25750 PD controller might be powered off externally at power suspend,
after resuming PD controller power back, apply the patch again.

Signed-off-by: Abdel Alkuor <abdelalkuor@...tab.com>
---
Changes in v8:
  - Use device_is_compatible instead of of_device_is_compatible
Changes in v7:
  - Add driver name to commit subject
Changes in v6:
  - Check tps25750 using is_compatiable device node
Changes in v5:
  - Incorporating tps25750 into tps6598x driver

 drivers/usb/typec/tipd/core.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index 2598433a69cf..32e42798688f 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -1203,6 +1203,17 @@ static int __maybe_unused tps6598x_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct tps6598x *tps = i2c_get_clientdata(client);
+	int ret;
+
+	ret = tps6598x_check_mode(tps);
+	if (ret < 0)
+		return ret;
+
+	if (device_is_compatible(tps->dev, "ti,tps25750") && ret == TPS_MODE_PTCH) {
+		ret = tps25750_apply_patch(tps);
+		if (ret)
+			return ret;
+	}
 
 	if (tps->wakeup) {
 		disable_irq_wake(client->irq);
-- 
2.34.1