linux-kernel - [RFC 0/2] [media] si4713 DT binding

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Message-Id: <1396785125-8759-1-git-send-email-sre@kernel.org>
Date:	Sun,  6 Apr 2014 13:52:03 +0200
From:	Sebastian Reichel <sre@...nel.org>
To:	linux-media@...r.kernel.org
Cc:	Tony Lindgren <tony@...mide.com>,
	Eduardo Valentin <edubezval@...il.com>,
	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Dinesh Ram <Dinesh.Ram@...n.ch>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	Sebastian Reichel <sre@...nel.org>
Subject: [RFC 0/2] [media] si4713 DT binding

Hi,

This is an RFC patch adding DT support to the si4713 radio transmitter i2c
driver. The changes can be summarized as follows:

 * Move regulator information back into the driver. The regulators needed are
   documented in the chip and have nothing to do with boarddata. Instead
   devm_regulator_get_optional and errors are handled quite loosely now.
   Maybe the USB driver should provide dummy regulators.
 * GPIO handling is updated to gpiod consumer interface, resulting in a driver
   cleanup and easy DT handling
 * The driver is updated to use managed resources wherever possible

So much about the nice stuff. But there is also

 * Instantiation of the platform device from the i2c (sub-)device. Since DT
   is not supposed to contain linuxisms the device is a simple i2c node
   resulting in the i2c probe function being called. Thus registering the main
   v4l device must happen from there.

Tested:
 * Compilation on torvalds/linux.git:master
 * Booting in DT mode
 * Some simply driver queries using v4l2-ctl

Not tested:
 * The USB driver, since I do not own the USB dongle
 * The legacy platform code (only DT boot has been tested).
   (The legacy platform code is supposed to removed in the near future anyways)

-- Sebastian

Sebastian Reichel (2):
  [media] si4713: add Device Tree support
  [media] Ad DT binding documentation for si4713

 Documentation/devicetree/bindings/media/si4713.txt |  30 ++++
 arch/arm/mach-omap2/board-rx51-peripherals.c       |  67 ++++-----
 drivers/media/radio/si4713/radio-platform-si4713.c |  28 +---
 drivers/media/radio/si4713/si4713.c                | 166 +++++++++++++--------
 drivers/media/radio/si4713/si4713.h                |  15 +-
 include/media/radio-si4713.h                       |  30 ----
 include/media/si4713.h                             |   4 +-
 7 files changed, 183 insertions(+), 157 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/media/si4713.txt
 delete mode 100644 include/media/radio-si4713.h

-- 
1.9.1

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