linux-kernel - Re: [PATCH 0/3] usb: typec: ucsi: continue rework of command interface

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Message-ID: <Z5iU0xQWm01XObEI@kuha.fi.intel.com>
Date: Tue, 28 Jan 2025 10:26:59 +0200
From: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] usb: typec: ucsi: continue rework of command
 interface

On Fri, Jan 17, 2025 at 12:49:40PM +0200, Dmitry Baryshkov wrote:
> There are cases when UCSI drivers either want to mangle UCSI commands or
> its response or to completely emulate some of the commands in software.
> Currently code to handle such situations is split between sync_control(),
> read_cci() and read_message_in() callbacks.
> 
> Make sync_control() also return CCI and MESSAGE_IN data, simplifying
> this kind of handling. This series reworks CCG driver and LG Gram
> quirks. If the approach is considered to be acceptable, it will be used
> to emulate AltMode support in the GLINK and Yoga C630 drivers: on these
> platforms DisplayPort AltMode is handled via the non-UCSI messages,
> however in the past reviewers suggested reusing UCSI displayport driver
> and just emulate necessary commands (mostly GET_CURRENT_CAM).

This is okay by me. For the lot:

Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> ---
> Dmitry Baryshkov (3):
>       usb: typec: ucsi: return CCI and message from sync_control callback
>       usb: typec: ucsi: ccg: move command quirks to ucsi_ccg_sync_control()
>       usb: typec: ucsi: acpi: move LG Gram quirk to ucsi_gram_sync_control()
> 
>  drivers/usb/typec/ucsi/ucsi.c      | 19 ++++++-----
>  drivers/usb/typec/ucsi/ucsi.h      |  6 ++--
>  drivers/usb/typec/ucsi/ucsi_acpi.c | 29 +++++------------
>  drivers/usb/typec/ucsi/ucsi_ccg.c  | 67 ++++++++++++++++++--------------------
>  4 files changed, 56 insertions(+), 65 deletions(-)
> ---
> base-commit: e7bb221a638962d487231ac45a6699fb9bb8f9fa
> change-id: 20250116-ucsi-merge-commands-f2f6f5c93466
> 
> Best regards,
> -- 
> Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
heikki