linux-toradex.git/drivers/mfd/lpc_ich.c, branch v4.10

mfd: lpc_ich: Use gpio-ich driver for 8-series and 9-series Intel PCH devices

2016-11-21T13:00:17+00:00

The Intel 8-series and 9-series PCH devices, described by the descriptors
LPC_LPT and LPC_9S although codenamed 'lynxpoint' do not use the same GPIO
register layout which is used by the gpio-lynxpoint driver.  They use the
same ICH_V5_GPIO layout as the gpio-ich driver.

See:
http://www.intel.com/content/www/us/en/chipsets/8-series-chipset-pch-datasheet.html
http://www.intel.com/content/www/us/en/chipsets/9-series-chipset-pch-datasheet.html

The devices described by "Mobile 4th Generation Intel Core Processor
Family I/O" manual use the gpio-lynxpoint driver and are described by the
LPC_LPT_LP descriptor.

See:
http://www.intel.com/content/www/us/en/processors/core/4th-gen-core-family-mobile-i-o-datasheet.html

Signed-off-by: Dan Gora 
Signed-off-by: Lee Jones

mfd: lpc_ich: Do not create iTCO watchdog when WDAT table exists

2016-09-28T21:07:20+00:00

ACPI WDAT table is the preferred way to use hardware watchdog over the
native iTCO_wdt. Windows only uses this table for its hardware watchdog
implementation so we should be relatively safe to trust it has been
validated by OEMs

Prevent iTCO watchdog creation if we detect that there is ACPI WDAT table.

Signed-off-by: Mika Westerberg 
Reviewed-by: Guenter Roeck 
Acked-by: Lee Jones 
Signed-off-by: Rafael J. Wysocki

mfd: lpc_ich: Intel device IDs for PCH

2015-11-24T11:10:46+00:00

Adding Intel codename Lewisburg platform device IDs for PCH.

Signed-off-by: Alexandra Yates 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Lee Jones

mfd: lpc_ich: Separate device cells for clarity

2015-10-30T17:18:50+00:00

The lpc_ich_cells array gives the wrong impression about the
relationship between the watchdog and GPIO devices. They are
completely distinct devices, so this patch separates the
array into distinct mfd_cell structs per device.

A side effect of removing the array, is that the lpc_cells enum
is no longer needed.

Signed-off-by: Aaron Sierra 
Acked-by: Andy Shevchenko 
Signed-off-by: Lee Jones

mfd: watchdog: iTCO_wdt: Expose watchdog properties using platform data

2015-08-11T14:03:21+00:00

Intel Sunrisepoint (Skylake PCH) has the iTCO watchdog accessible across
the SMBus, unlike previous generations of PCH/ICH where it was on the
LPC bus. Because it's on the SMBus, it doesn't make sense to pass around
a 'struct lpc_ich_info', and leaking the type of bus into the iTCO
watchdog driver is kind of backwards anyway.

This change introduces a new 'struct itco_wdt_platform_data' for use
inside the iTCO watchdog driver and by the upcoming Intel Sunrisepoint
code, which neatly avoids having to include lpc_ich headers in the i801
i2c driver.

This change is overdue because lpc_ich_info has already found its way
into other TCO watchdog users, notably the intel_pmc_ipc driver where
the watchdog actually isn't on the LPC bus as far as I can see.

A simple translation layer is provided for converting from the existing
'struct lpc_ich_info' inside the lpc_ich mfd driver.

Signed-off-by: Matt Fleming 
Acked-by: Darren Hart  [drivers/x86 refactoring]
Reviewed-by: Guenter Roeck 
Signed-off-by: Lee Jones

mfd: lpc_ich: Assign subdevice ids automatically

2015-06-22T11:25:30+00:00

Using -1 as platform device id means that the platform driver core will not
assign any id to the device (the device name will not have id at all). This
results problems on systems that have multiple PCHs (Platform Controller
HUBs) because all of them also include their own copy of LPC device.

All the subsequent device creations will fail because there already exists
platform device with the same name.

Fix this by passing PLATFORM_DEVID_AUTO as platform device id. This makes
the platform device core to allocate new ids automatically.

Signed-off-by: Mika Westerberg 
Signed-off-by: Lee Jones

mfd: lpc_ich: Sort IDs

2015-04-09T09:25:54+00:00

The patch sorts IDs in the table for easier maintenance. There is no
functional change.

Signed-off-by: Andy Shevchenko 
Signed-off-by: Lee Jones

mfd: lpc_ich: Sort IDs

2015-03-30T09:06:16+00:00

This patch just sorts IDs in the table for better maintenance. There is no
functional change.

Signed-off-by: Andy Shevchenko 
Signed-off-by: Lee Jones

mfd: lpc_ich: Add Device IDs for Intel 9 Series PCH

2014-09-26T07:15:44+00:00

This patch adds the LPC Device IDs for the Intel 9 Series PCH.

Signed-off-by: James Ralston 
Signed-off-by: Lee Jones

mfd: lpc_ich: Add PCI ID for Intel Braswell

2014-09-26T07:15:42+00:00

This is the same as used in Baytrail so add the new PCI ID to the driver's
list of supported IDs.

Signed-off-by: Alan Cox 
Signed-off-by: Mika Westerberg 
Signed-off-by: Lee Jones