diff mbox series

[2/6] Bluetooth: hci_qca: schedule a devm action for disabling the clock

Message ID 20240705-hci_qca_refactor-v1-2-e2442121c13e@linaro.org
State Superseded
Headers show
Series Bluetooth: hci_qca: use the power sequencer for wcn7850 | expand

Commit Message

Bartosz Golaszewski July 5, 2024, 8:26 p.m. UTC 
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

In preparation for unduplicating the hci_uart registration code,
schedule a devres action for disabling the SUSCLK rather than doing it
manually.

We cannot really use devm_clk_get_enabled() as we also set the rate
before enabling the clock. While this should in theory work, I don't
want to risk breaking existing users. One solution for the future is to
add devm_clk_get_enabled_with_rate() to the clock framework.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 drivers/bluetooth/hci_qca.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index bc6a49ba26f9..895ce8e11da8 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -2295,6 +2295,13 @@  static int qca_init_regulators(struct qca_power *qca,
 	return 0;
 }
 
+static void qca_clk_disable_unprepare(void *data)
+{
+	struct clk *clk = data;
+
+	clk_disable_unprepare(clk);
+}
+
 static int qca_serdev_probe(struct serdev_device *serdev)
 {
 	struct qca_serdev *qcadev;
@@ -2434,10 +2441,15 @@  static int qca_serdev_probe(struct serdev_device *serdev)
 		if (err)
 			return err;
 
+		err = devm_add_action_or_reset(&serdev->dev,
+					       qca_clk_disable_unprepare,
+					       qcadev->susclk);
+		if (err)
+			return err;
+
 		err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto);
 		if (err) {
 			BT_ERR("Rome serdev registration failed");
-			clk_disable_unprepare(qcadev->susclk);
 			return err;
 		}
 	}
@@ -2484,8 +2496,6 @@  static void qca_serdev_remove(struct serdev_device *serdev)
 		fallthrough;
 
 	default:
-		if (qcadev->susclk)
-			clk_disable_unprepare(qcadev->susclk);
 	}
 
 	hci_uart_unregister_device(&qcadev->serdev_hu);