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Message-ID: <f6baa415-b078-4308-e31d-6b44e748c1c5@molgen.mpg.de>
Date: Wed, 22 Dec 2021 15:24:58 +0100
From: Paul Menzel <pmenzel@...gen.mpg.de>
To: Sean Wang <sean.wang@...iatek.com>,
Marcel Holtmann <marcel@...tmann.org>,
Johan Hedberg <johan.hedberg@...il.com>
Cc: Mark-YW.Chen@...iatek.com, Soul.Huang@...iatek.com,
YN.Chen@...iatek.com, Leon.Yen@...iatek.com,
Eric-SY.Chang@...iatek.com, Deren.Wu@...iatek.com,
km.lin@...iatek.com, robin.chiu@...iatek.com,
Eddie.Chen@...iatek.com, ch.yeh@...iatek.com,
posh.sun@...iatek.com, ted.huang@...iatek.com,
Eric.Liang@...iatek.com, Stella.Chang@...iatek.com,
Tom.Chou@...iatek.com, steve.lee@...iatek.com, jsiuda@...gle.com,
frankgor@...gle.com, jemele@...gle.com, abhishekpandit@...gle.com,
michaelfsun@...gle.com, mcchou@...omium.org, shawnku@...gle.com,
linux-bluetooth@...r.kernel.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/3] Bluetooth: mt7921s: Support wake on bluetooth
Dear Sean,
Am 22.12.21 um 04:11 schrieb sean.wang@...iatek.com:
> From: Mark Chen <mark-yw.chen@...iatek.com>
>
> Enable wake on bluetooth on mt7921s that can be supported since the
> firmware with version 20211129211059 was added, and the patch would
> not cause any harm even when the old firmware is applied.
Maybe print a notice level message, if the firmware is too old, and the
feature cannot be supported?
> The patch was tested by setting up an HID or HOGP profile to connect a
> Bluetooth keyboard and mouse, then putting the system to suspend, then
> trying to wake up the system by moving the Bluetooth keyboard or mouse,
> and then checking if the system can wake up and be brought back to
> the normal state.
I’d still would like to see the datasheet name, revision, and section in
the commit message, even though the datasheet is not public.
> Co-developed-by: Sean Wang <sean.wang@...iatek.com>
> Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> Signed-off-by: Mark Chen <mark-yw.chen@...iatek.com>
> ---
> v2: refine the git message
> ---
> drivers/bluetooth/btmtk.h | 8 ++++++++
> drivers/bluetooth/btmtksdio.c | 31 ++++++++++++++++++++++++++++++-
> 2 files changed, 38 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
> index 6e7b0c7567c0..2be1d2680ad8 100644
> --- a/drivers/bluetooth/btmtk.h
> +++ b/drivers/bluetooth/btmtk.h
> @@ -68,6 +68,14 @@ struct btmtk_tci_sleep {
> u8 time_compensation;
> } __packed;
>
> +struct btmtk_wakeon {
> + u8 mode;
> + u8 gpo;
> + u8 active_high;
> + __le16 enable_delay;
> + __le16 wakeup_delay;
> +} __packed;
> +
> struct btmtk_hci_wmt_params {
> u8 op;
> u8 flag;
> diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
> index b5ea8d3bffaa..771733ce362b 100644
> --- a/drivers/bluetooth/btmtksdio.c
> +++ b/drivers/bluetooth/btmtksdio.c
> @@ -958,6 +958,30 @@ static int btmtksdio_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
> return 0;
> }
>
> +static bool btmtk_sdio_wakeup(struct hci_dev *hdev)
> +{
> + struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
> + bool may_wakeup = device_may_wakeup(bdev->dev);
> + struct btmtk_wakeon bt_awake = {
> + .mode = 0x1,
> + .gpo = 0,
> + .active_high = 0x1,
> + .enable_delay = cpu_to_le16(0xc80),
> + .wakeup_delay = cpu_to_le16(0x20)
> + };
> + struct sk_buff *skb;
> +
> + if (may_wakeup &&
> + bdev->data->chipid == 0x7921) {
> + skb = __hci_cmd_sync(hdev, 0xfc27, sizeof(bt_awake),
> + &bt_awake, HCI_CMD_TIMEOUT);
> + if (IS_ERR(skb))
> + may_wakeup = false;
> + }
> +
> + return may_wakeup;
> +}
> +
> static int btmtksdio_probe(struct sdio_func *func,
> const struct sdio_device_id *id)
> {
> @@ -998,6 +1022,7 @@ static int btmtksdio_probe(struct sdio_func *func,
> hdev->shutdown = btmtksdio_shutdown;
> hdev->send = btmtksdio_send_frame;
> hdev->set_bdaddr = btmtk_set_bdaddr;
> + hdev->wakeup = btmtk_sdio_wakeup;
Just a nit, that two and three lines above, the equal signs are aligned.
> SET_HCIDEV_DEV(hdev, &func->dev);
>
> @@ -1032,7 +1057,11 @@ static int btmtksdio_probe(struct sdio_func *func,
> */
> pm_runtime_put_noidle(bdev->dev);
>
> - return 0;
> + err = device_init_wakeup(bdev->dev, true);
> + if (err)
> + bt_dev_err(hdev, "%s: failed to init_wakeup", __func__);
> +
> + return err;
> }
>
> static void btmtksdio_remove(struct sdio_func *func)
Kind regards,
Paul
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