linux-kernel - [PATCH v4 0/3] iTCO_wdt: Add support for Intel Sunrisepoint

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Message-Id: <1438865186-25794-1-git-send-email-matt@codeblueprint.co.uk>
Date:	Thu,  6 Aug 2015 13:46:23 +0100
From:	Matt Fleming <matt@...eblueprint.co.uk>
To:	Wim Van Sebroeck <wim@...ana.be>
Cc:	linux-kernel@...r.kernel.org, linux-watchdog@...r.kernel.org,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Jean Delvare <jdelvare@...e.com>,
	Wolfram Sang <wsa@...-dreams.de>,
	Lee Jones <lee.jones@...aro.org>,
	Guenter Roeck <linux@...ck-us.net>,
	Darren Hart <dvhart@...radead.org>,
	Matt Fleming <matt.fleming@...el.com>
Subject: [PATCH v4 0/3] iTCO_wdt: Add support for Intel Sunrisepoint

From: Matt Fleming <matt.fleming@...el.com>

Starting with Intel Sunrisepoint (Skylake PCH) the TCO watchdog device
is now on the SMBUS, whereas for previous ICH/PCH it was on the LPC bus.

Because iTCO_wdt devices may now appear on either the LPC bus or the
SMBUS we need to abstract the bus information into an agnostic structure
instead of the existing 'lpc_ich_info' which tightly integrates both the
lpc_ich and iTCO_wdt drivers.

The first patch introduces a platform data structure to handle this and
shuffles the existing code around. The other patches add the
device-specific information to the i2c-i801 and iTCO_wdt drivers.

Patches based against v4.2-rc4, if there's some other tree I should base
this on, please let me know.

Comments welcome!

Changes in v4:

 - Added Darren's ACK for PATCH 1
 - Explicitly list versions in iTCO_wdt_probe()
 - Delete superfluous 'ret' variable in iTCO_wdt_unset_NO_REBOOT_bit()

Changes in v3:

 - Added Ack/Review tags to patches

Changes in v2:

 - Use lowercase for all new files and data structures
 - Allocate platform data with devm_kzalloc()
 - Move Kconfig changes to final patch and use 'select', not 'depends'
 - Swap strcpy() for strlcpy()
 - Fixup use of lpc_ich_info in intel_pmc_ipc which was missed in v1
 - Don't use bitops in i2c-i801
 - Remove superfluous NULL checks in i2c-i801
 - Explicitly list reboot bit versions in no_reboot_bit()
 - Use switch/case construst instead of crazy if else
 - Fold original fixups from PATCH 4 and 5 into PATCH 1 and 2

Matt Fleming (2):
  iTCO_wdt: Expose watchdog properties using platform data
  iTCO_wdt: Add support for TCO on Intel Sunrisepoint

Mika Westerberg (1):
  i2c: i801: Create iTCO device on newer Intel PCHs

 drivers/i2c/busses/i2c-i801.c          | 120 ++++++++++++++++++++++++++++++++-
 drivers/mfd/lpc_ich.c                  |  32 ++++++++-
 drivers/platform/x86/intel_pmc_ipc.c   |   9 ++-
 drivers/watchdog/Kconfig               |   3 +-
 drivers/watchdog/iTCO_wdt.c            |  82 +++++++++++++---------
 include/linux/mfd/lpc_ich.h            |   6 --
 include/linux/platform_data/itco_wdt.h |  19 ++++++
 7 files changed, 222 insertions(+), 49 deletions(-)
 create mode 100644 include/linux/platform_data/itco_wdt.h

-- 
2.1.0

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