linux-kernel - [PATCH 0/5] staging: Destage VCHIQ interface and MMAL

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Message-Id: <20250827-vchiq-destage-v1-0-5052a0d81c42@ideasonboard.com>
Date: Wed, 27 Aug 2025 11:54:07 +0530
From: Jai Luthra <jai.luthra@...asonboard.com>
To: Florian Fainelli <florian.fainelli@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>
Cc: linux-rpi-kernel@...ts.infradead.org, 
 linux-arm-kernel@...ts.infradead.org, linux-staging@...ts.linux.dev, 
 linux-kernel@...r.kernel.org, kernel-list@...pberrypi.com, 
 Stefan Wahren <wahrenst@....net>, 
 Dave Stevenson <dave.stevenson@...pberrypi.com>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Jai Luthra <jai.luthra@...asonboard.com>, 
 Umang Jain <umang.jain@...asonboard.com>
Subject: [PATCH 0/5] staging: Destage VCHIQ interface and MMAL

Hi,

The goal of this series is to begin the destaging and upstreaming
process for various Raspberry Pi peripherals that currently interact
with the firmware using the VCHIQ interface present in the staging tree.

While destaging the interface to drivers/platform/broadcom, also move
the VCHIQ memory abstraction layer (MMAL) driver. Secondly, drop the
bcm2835-camera driver, as the bcm2835-unicam driver using V4L2 framework
is the recommended way to capture from CSI sensors on this platform.

The bcm2835-audio driver is left as-is in the staging tree, as I am not
an expert on ALSA. Volunteers are welcome :)

In (a) subsequent series, I will upstream the following components that
use VCHIQ interface:
- vc-sm-cma driver
- bcm2835-isp driver

Thanks,
	Jai

Signed-off-by: Jai Luthra <jai.luthra@...asonboard.com>
---
Jai Luthra (4):
      staging: vc04_services: Cleanup formatting TODO entry
      platform/broadcom: Destage VCHIQ interface
      media: staging: Drop bcm2835-camera driver
      platform/broadcom: Destage VCHIQ MMAL driver

Umang Jain (1):
      include: linux: Destage VCHIQ interface headers

 MAINTAINERS                                        |    2 +
 drivers/platform/Kconfig                           |    2 +
 drivers/platform/Makefile                          |    1 +
 drivers/platform/broadcom/Kconfig                  |   39 +
 drivers/platform/broadcom/Makefile                 |   15 +
 .../broadcom/vchiq-interface}/TESTING              |    0
 .../broadcom/vchiq-interface}/TODO                 |    6 -
 .../broadcom/vchiq-interface}/vchiq_arm.c          |    9 +-
 .../broadcom/vchiq-interface}/vchiq_bus.c          |    4 +-
 .../broadcom/vchiq-interface}/vchiq_core.c         |    4 +-
 .../broadcom/vchiq-interface}/vchiq_debugfs.c      |    6 +-
 .../broadcom/vchiq-interface}/vchiq_dev.c          |    7 +-
 .../broadcom/vchiq-interface}/vchiq_ioctl.h        |    3 +-
 .../broadcom}/vchiq-mmal/Kconfig                   |    0
 .../broadcom}/vchiq-mmal/Makefile                  |    0
 .../broadcom}/vchiq-mmal/mmal-common.h             |    0
 .../broadcom}/vchiq-mmal/mmal-encodings.h          |    0
 .../broadcom}/vchiq-mmal/mmal-msg-common.h         |    0
 .../broadcom}/vchiq-mmal/mmal-msg-format.h         |    0
 .../broadcom}/vchiq-mmal/mmal-msg-port.h           |    0
 .../broadcom}/vchiq-mmal/mmal-msg.h                |    0
 .../broadcom}/vchiq-mmal/mmal-parameters.h         |    0
 .../broadcom}/vchiq-mmal/mmal-vchiq.c              |    5 +-
 .../broadcom}/vchiq-mmal/mmal-vchiq.h              |    0
 drivers/staging/vc04_services/Kconfig              |   39 -
 drivers/staging/vc04_services/Makefile             |   14 -
 .../vc04_services/bcm2835-audio/bcm2835-vchiq.c    |    5 +-
 .../staging/vc04_services/bcm2835-audio/bcm2835.c  |    3 +-
 .../staging/vc04_services/bcm2835-audio/bcm2835.h  |    3 +-
 .../staging/vc04_services/bcm2835-camera/Kconfig   |   13 -
 .../staging/vc04_services/bcm2835-camera/Makefile  |    6 -
 drivers/staging/vc04_services/bcm2835-camera/TODO  |   17 -
 .../vc04_services/bcm2835-camera/bcm2835-camera.c  | 2011 --------------------
 .../vc04_services/bcm2835-camera/bcm2835-camera.h  |  142 --
 .../vc04_services/bcm2835-camera/controls.c        | 1399 --------------
 .../raspberrypi => include/linux/vchiq}/vchiq.h    |    0
 .../vchiq_arm => include/linux/vchiq}/vchiq_arm.h  |    0
 .../vchiq_arm => include/linux/vchiq}/vchiq_bus.h  |    0
 .../vchiq_arm => include/linux/vchiq}/vchiq_cfg.h  |    0
 .../vchiq_arm => include/linux/vchiq}/vchiq_core.h |    2 +-
 .../linux/vchiq}/vchiq_debugfs.h                   |    0
 41 files changed, 86 insertions(+), 3671 deletions(-)
---
base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
change-id: 20250827-vchiq-destage-39de1e67557d

Best regards,
-- 
Jai Luthra <jai.luthra@...asonboard.com>