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SubjectRe: [PATCH v3] Bluetooth: hci_qca: Add qca_power_on() API to support both wcn399x and Rome power up
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@codeaurora.org>
>> ---
>>
>> 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@chromium.org>

Makes sense will do that

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