linux-kernel - [RFCv3 0/7] OMAP SSI driver

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Message-Id: <1381091235-18293-1-git-send-email-sre@debian.org>
Date:	Sun,  6 Oct 2013 22:27:08 +0200
From:	Sebastian Reichel <sre@...ian.org>
To:	Sebastian Reichel <sre@...g0.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Shubhrajyoti Datta <omaplinuxkernel@...il.com>,
	Carlos Chinea <cch.devel@...il.com>,
	Paul Walmsley <paul@...an.com>
Cc:	Kevin Hilman <khilman@...prootsystems.com>,
	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	'Benoît Cousson' <bcousson@...libre.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-omap@...r.kernel.org,
	'Pali Rohár' <pali.rohar@...il.com>,
	'Ивайло Димитров' 
	<freemangordon@....bg>,
	Joni Lapilainen <joni.lapilainen@...il.com>,
	Sebastian Reichel <sre@...ian.org>
Subject: [RFCv3 0/7] OMAP SSI driver

Hi,

Here is the third round of the OMAP SSI driver patches.

Changes since RFCv2:
* Move DT data from omap34xx.dtsi to omap3.dtsi
  Nokia N9 uses an omap3630 and ssi for modem connection, thus SSI
  seems to be part of all OMAP3 SoCs.
* Move DT documentation to the driver patch
* Update wording in DT documentation
  I just applied Stephen Warrens suggestions
* Removal of omap_pm_get_dev_context_loss_count as demanded by Tony Lindgren
  For now there is no context loss support in the driver, since I do not
  have enough information about the chip to support this via registers.
* Dropped useless "default n" from KConfig
* Add support for HSI client registration via DT
* Register hsi-char as ssi client for Nokia N900
  Currently only hsi-char client is available in the mainline kernel,
  but for the Nokia N900 two more clients will be needed: ssi-protocol
  and cmt-speech. Those will be added with their own patchset.
* Use ida_simple_get for device id, since DT does not setup pd->id
* Fixed SSI interrupt numbers in omap3.dtsi
  I subtracted OMAP_INTC_START before, but the original patch did
  not yet have OMAP_INTC_START added.
* Fixed compilation as kernel modules
* Fixed reload of kernel modules
* Added module dependency: omap_ssi_port needs omap_port

TODO:
* Central Message Queue
  I did not yet implement a central message queue in the HSI framework.
  I will do this after Nokia N900 modem is working in the mainline kernel,
  since that makes testing easier.
* Get clock data from DT
  This depends on a patchset, which is not yet part of any kernel tree.
  Apart from that I don't know which clocks will be needed. That depends
  on the implementation of the hwmod DTification (see next point)
* Remove the hwmod DT hack
  This depends on some future work merging hwmod data into DT.

Version 2 of the patchset: https://lkml.org/lkml/2013/9/15/98

-- Sebastian

Sebastian Reichel (7):
  ARM: OMAP2+: hwmod-data: Add SSI information
  HSI: add Device Tree support for HSI clients
  HSI: method to unregister clients from an hsi port
  HSI: hsi-char: add Device Tree support
  HSI: hsi-char: fix driver for multiport scenarios
  ARM: OMAP2+: HSI: Introduce OMAP SSI driver
  ARM: dts: N900: Add SSI information

 Documentation/devicetree/bindings/hsi/omap_ssi.txt |   69 +
 .../devicetree/bindings/hsi/trivial-devices.txt    |   36 +
 arch/arm/boot/dts/omap3-n900.dts                   |   12 +
 arch/arm/boot/dts/omap3.dtsi                       |   47 +
 arch/arm/mach-omap2/omap_hwmod_3xxx_data.c         |   48 +
 drivers/hsi/Kconfig                                |    1 +
 drivers/hsi/Makefile                               |    1 +
 drivers/hsi/clients/hsi_char.c                     |   15 +-
 drivers/hsi/controllers/Kconfig                    |   19 +
 drivers/hsi/controllers/Makefile                   |    6 +
 drivers/hsi/controllers/omap_ssi.c                 |  618 +++++++++
 drivers/hsi/controllers/omap_ssi.h                 |  166 +++
 drivers/hsi/controllers/omap_ssi_port.c            | 1400 ++++++++++++++++++++
 drivers/hsi/controllers/omap_ssi_regs.h            |  171 +++
 drivers/hsi/hsi.c                                  |   80 +-
 include/dt-bindings/hsi/hsi.h                      |   17 +
 include/linux/hsi/hsi.h                            |    3 +
 17 files changed, 2707 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/hsi/omap_ssi.txt
 create mode 100644 Documentation/devicetree/bindings/hsi/trivial-devices.txt
 create mode 100644 drivers/hsi/controllers/Kconfig
 create mode 100644 drivers/hsi/controllers/Makefile
 create mode 100644 drivers/hsi/controllers/omap_ssi.c
 create mode 100644 drivers/hsi/controllers/omap_ssi.h
 create mode 100644 drivers/hsi/controllers/omap_ssi_port.c
 create mode 100644 drivers/hsi/controllers/omap_ssi_regs.h
 create mode 100644 include/dt-bindings/hsi/hsi.h

-- 
1.8.4.rc3

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