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Message-Id: <20240705-hci_qca_refactor-v1-2-e2442121c13e@linaro.org>
Date: Fri, 05 Jul 2024 22:26:36 +0200
From: Bartosz Golaszewski <brgl@...ev.pl>
To: Marcel Holtmann <marcel@...tmann.org>,
Luiz Augusto von Dentz <luiz.dentz@...il.com>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Balakrishna Godavarthi <quic_bgodavar@...cinc.com>,
Rocky Liao <quic_rjliao@...cinc.com>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>
Cc: linux-bluetooth@...r.kernel.org, netdev@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-msm@...r.kernel.org,
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH 2/6] Bluetooth: hci_qca: schedule a devm action for
disabling the clock
From: Bartosz Golaszewski <bartosz.golaszewski@...aro.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@...aro.org>
---
drivers/bluetooth/hci_qca.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
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);
--
2.43.0
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