Re: [PATCH v3] Bluetooth: hci_qca: Add qca_power_on() API to support both wcn399x and Rome power up

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Matt,

在 2020-01-10 03:05,Matthias Kaehlcke 写道:
Hi Rocky,

On Thu, Jan 09, 2020 at 01:14:27PM +0800, Rocky Liao wrote:
This patch adds a unified API qca_power_on() to support both wcn399x and
Rome power on. For wcn399x it calls the qca_wcn3990_init() to init the
regulators, and for Rome it pulls up the bt_en GPIO to power up the btsoc.
It also moves all the power up operation from hdev->open() to
hdev->setup().

Signed-off-by: Rocky Liao <rjliao@xxxxxxxxxxxxxx>
---

Changes in v2: None
Changes in v3:
  -combined the changes of patch 2 and 3 into this patch

it would be better to actually describe what was done, "patch 2 and 3"
doesn't provide much useful information.

OK, will update that

  -updated the commit message

drivers/bluetooth/hci_qca.c | 46 ++++++++++++++++++++++++-------------
 1 file changed, 30 insertions(+), 16 deletions(-)

diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
index 82e4cd4b6663..427e381a08b4 100644
--- a/drivers/bluetooth/hci_qca.c
+++ b/drivers/bluetooth/hci_qca.c
@@ -541,7 +541,6 @@ static int qca_open(struct hci_uart *hu)
 {
 	struct qca_serdev *qcadev;
 	struct qca_data *qca;
-	int ret;

 	BT_DBG("hu %p qca_open", hu);

@@ -582,23 +581,10 @@ static int qca_open(struct hci_uart *hu)
 	hu->priv = qca;

 	if (hu->serdev) {
-
 		qcadev = serdev_device_get_drvdata(hu->serdev);
-		if (!qca_is_wcn399x(qcadev->btsoc_type)) {
-			gpiod_set_value_cansleep(qcadev->bt_en, 1);
-			/* Controller needs time to bootup. */
-			msleep(150);
-		} else {
+		if (qca_is_wcn399x(qcadev->btsoc_type)) {
 			hu->init_speed = qcadev->init_speed;
 			hu->oper_speed = qcadev->oper_speed;
-			ret = qca_regulator_enable(qcadev);
-			if (ret) {
-				destroy_workqueue(qca->workqueue);
-				kfree_skb(qca->rx_skb);
-				hu->priv = NULL;
-				kfree(qca);
-				return ret;
-			}
 		}
 	}

@@ -1531,6 +1517,31 @@ static int qca_wcn3990_init(struct hci_uart *hu)
 	return 0;
 }

+static int qca_power_on(struct hci_dev *hdev)
+{
+	struct hci_uart *hu = hci_get_drvdata(hdev);
+	enum qca_btsoc_type soc_type = qca_soc_type(hu);
+	struct qca_serdev *qcadev;
+	int ret = 0;
+
+	/* Non-serdev device usually is powered by external power
+	 * and don't need additional action in driver for power on
+	 */
+	if (!hu->serdev)
+		return 0;
+
+	if (qca_is_wcn399x(soc_type)) {
+		ret = qca_wcn3990_init(hu);

Since there is no real need to add the qca_regulator_enable() call from
qca_open() here qca_power_on() is now essentially a fancy wrapper for
qca_wcn3990_init(), but I guess that's ok.

+	} else {
+		qcadev = serdev_device_get_drvdata(hu->serdev);
+		gpiod_set_value_cansleep(qcadev->bt_en, 1);
+		/* Controller needs time to bootup. */
+		msleep(150);
+	}
+
+	return ret;
+}
+
 static int qca_setup(struct hci_uart *hu)
 {
 	struct hci_dev *hdev = hu->hdev;
@@ -1562,7 +1573,7 @@ static int qca_setup(struct hci_uart *hu)
 		set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks);
 		set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hdev->quirks);
 		hu->hdev->shutdown = qca_power_off;
-		ret = qca_wcn3990_init(hu);
+		ret = qca_power_on(hdev);
 		if (ret)
 			return ret;

@@ -1571,6 +1582,9 @@ static int qca_setup(struct hci_uart *hu)
 			return ret;
 	} else {
 		bt_dev_info(hdev, "ROME setup");
+		ret = qca_power_on(hdev);
+		if (ret)
+			return ret;
 		qca_set_speed(hu, QCA_INIT_SPEED);
 	}

It would be nice if we could get away with a single qca_power_on() call
for WCN399x and ROME. How about this before 'if (qca_is_wcn399x(soc_type))':

	bt_dev_info(hdev, "setting up %s",
		qca_is_wcn399x(soc_type)? "wcn399x" : "ROME");

	ret = qca_power_on(hdev);
	if (ret)
		return ret;


In any case:

Reviewed-by: Matthias Kaehlcke <mka@xxxxxxxxxxxx>

Makes sense will do that



[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [Linux for Sparc]     [IETF Annouce]     [Security]     [Bugtraq]     [Linux MIPS]     [ECOS]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux