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Date:   Mon, 01 Apr 2019 13:16:07 +0530
From:   Balakrishna Godavarthi <bgodavar@codeaurora.org>
To:     Matthias Kaehlcke <mka@chromium.org>
Cc:     Marcel Holtmann <marcel@holtmann.org>,
        Johan Hedberg <johan.hedberg@gmail.com>,
        linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org,
        Hemantg <hemantg@codeaurora.org>,
        Rocky Liao <rjliao@codeaurora.org>,
        Harish Bandi <c-hbandi@codeaurora.org>
Subject: Re: [PATCH v2 1/2] Bluetooth: hci_qca: Rename STATE_<flags> to
 QCA_<flags>
In-Reply-To: <CAG5bF+RLTaYbrn8uSpoU+W=PBmNawR6Ov0EOEcfuSymzuini5w@mail.gmail.com>
References: <20190312204217.73296-1-mka@chromium.org>
 <CAG5bF+RLTaYbrn8uSpoU+W=PBmNawR6Ov0EOEcfuSymzuini5w@mail.gmail.com>
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Hi Matthias,

On 2019-03-13 02:12, Matthias Kaehlcke wrote:
> Rename STATE_IN_BAND_SLEEP_ENABLED to QCA_IN_BAND_SLEEP_ENABLED.
> The constant represents a flag (multiple flags can be set at once),
> not a unique state of the controller or driver.
> 
> Also make the flag an enum value instead of a pre-processor constant
> (more flags will be added to the enum group by another patch).
> 
> Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
> ---
> Changes in v2:
> - don't use BIT()
> - change to enum type
> - updated commit message
> ---
>  drivers/bluetooth/hci_qca.c | 15 ++++++++-------
>  1 file changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/bluetooth/hci_qca.c b/drivers/bluetooth/hci_qca.c
> index 237aea34b69f..1b7ba9e9e08a 100644
> --- a/drivers/bluetooth/hci_qca.c
> +++ b/drivers/bluetooth/hci_qca.c
> @@ -54,9 +54,6 @@
>  #define HCI_IBS_WAKE_ACK	0xFC
>  #define HCI_MAX_IBS_SIZE	10
> 
> -/* Controller states */
> -#define STATE_IN_BAND_SLEEP_ENABLED	1
> -
>  #define IBS_WAKE_RETRANS_TIMEOUT_MS	100
>  #define IBS_TX_IDLE_TIMEOUT_MS		2000
>  #define CMD_TRANS_TIMEOUT_MS		100
> @@ -67,6 +64,10 @@
>  /* Controller debug log header */
>  #define QCA_DEBUG_HANDLE	0x2EDC
> 
> +enum qca_flags {
> +	QCA_IN_BAND_SLEEP_ENABLED,
> +};
> +

[Bala]: I would recommend to go with QCA_IBS_ENABLED as IBS is 
abbreviated as In band sleep.

>  /* HCI_IBS transmit side sleep protocol states */
>  enum tx_ibs_states {
>  	HCI_IBS_TX_ASLEEP,
> @@ -775,7 +776,7 @@ static int qca_enqueue(struct hci_uart *hu, struct
> sk_buff *skb)
>  	/* Don't go to sleep in middle of patch download or
>  	 * Out-Of-Band(GPIOs control) sleep is selected.
>  	 */
> -	if (!test_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags)) {
> +	if (!test_bit(QCA_IN_BAND_SLEEP_ENABLED, &qca->flags)) {
>  		skb_queue_tail(&qca->txq, skb);
>  		spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);
>  		return 0;
> @@ -1192,7 +1193,7 @@ static int qca_setup(struct hci_uart *hu)
>  		return ret;
> 
>  	/* Patch downloading has to be done without IBS mode */
> -	clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> +	clear_bit(QCA_IN_BAND_SLEEP_ENABLED, &qca->flags);
> 
>  	if (qcadev->btsoc_type == QCA_WCN3990) {
>  		bt_dev_info(hdev, "setting up wcn3990");
> @@ -1236,7 +1237,7 @@ static int qca_setup(struct hci_uart *hu)
>  	/* Setup patch / NVM configurations */
>  	ret = qca_uart_setup(hdev, qca_baudrate, qcadev->btsoc_type, 
> soc_ver);
>  	if (!ret) {
> -		set_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> +		set_bit(QCA_IN_BAND_SLEEP_ENABLED, &qca->flags);
>  		qca_debugfs_init(hdev);
>  	} else if (ret == -ENOENT) {
>  		/* No patch/nvm-config found, run with original fw/config */
> @@ -1294,7 +1295,7 @@ static void qca_power_shutdown(struct hci_uart 
> *hu)
>  	 * data in skb's.
>  	 */
>  	spin_lock_irqsave(&qca->hci_ibs_lock, flags);
> -	clear_bit(STATE_IN_BAND_SLEEP_ENABLED, &qca->flags);
> +	clear_bit(QCA_IN_BAND_SLEEP_ENABLED, &qca->flags);
>  	qca_flush(hu);
>  	spin_unlock_irqrestore(&qca->hci_ibs_lock, flags);

-- 
Regards
Balakrishna.