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SubjectRe: [PATCH v1] Bluetooth: Add hci_nxp BT submodule with controller Power Save feature for NXP BT chipsets.
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Dear Neeraj,


Thank you for your patch.


Am 16.11.22 um 17:42 schrieb Neeraj Sanjay Kale:

Please remove the dot/period at the end of the summary/subject line.

> Added proprietary hci_uart driver code to the linux hci uart sub-system as

Please use present tense: Add

“proprietary … code” sounds strange, as Linux is FLOSS. Please clarify.

> hci_nxp. This driver has Power Save feature that will put the NXP bluetooth
> chip into sleep state, whenever there is no activity for certain duration
> of time (2000ms), and will be woken up when any activity is to be
> initiated.
>
> This Power Save feature will be enabled by default and can be disabled and
> re-enabled by the following set of commands:
> hcitool -i hci0 cmd 3F 23 02 00 00 (disable Power Save)
> hcitool -i hci0 cmd 3F 23 03 00 00 (enable Power Save)
>
> The Power Save feature uses UART break signal by default as chip sleep and
> wake-up source, and can be set with the following set of commands:
> hcitool -i hci0 cmd 3F 53 03 14 01 FF (set UART break method)
> hcitool -i hci0 cmd 3F 53 03 14 02 15 (set chip's GPIO[20] method)

Please mention the datasheet, and how you tested the driver.

> Signed-off-by: Neeraj Sanjay Kale <neeraj.sanjaykale@nxp.com>
> ---
> MAINTAINERS | 6 +
> drivers/bluetooth/Kconfig | 10 +
> drivers/bluetooth/Makefile | 1 +
> drivers/bluetooth/hci_ldisc.c | 6 +
> drivers/bluetooth/hci_nxp.c | 763 ++++++++++++++++++++++++++++++++++++++++++
> drivers/bluetooth/hci_nxp.h | 118 +++++++
> drivers/bluetooth/hci_uart.h | 8 +-
> 7 files changed, 911 insertions(+), 1 deletion(-)
> create mode 100644 drivers/bluetooth/hci_nxp.c
> create mode 100644 drivers/bluetooth/hci_nxp.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index e55a4d4..6b2c264 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -22591,6 +22591,12 @@ L: linux-mm@kvack.org
> S: Maintained
> F: mm/zswap.c
>
> +NXP BLUETOOTH WIRELESS DRIVERS
> +M: amitkumar.karwar@nxp.com
> +M: neeraj.sanjaykale@nxp.com

Mentioning a mailing list, and maybe setting up a functional address,
would be nice (nxp-bluetooth-wireless-linux-driver@nxp.com).

> +S: Maintained
> +F: drivers/bluetooth/hci_nxp*
> +
> THE REST
> M: Linus Torvalds <torvalds@linux-foundation.org>
> L: linux-kernel@vger.kernel.org

[…]


Kind regards,

Paul

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