linux-toradex.git/drivers/mfd/wm8350-core.c, branch v2.6.30.6

mfd: Keep a cache of WM8350 volatile values

2009-05-19T20:22:28+00:00

Due to the way that the WM8350 audio driver handles CODEC_ENA many of
the WM8350 audio registers are marked as volatile when they aren't
actually so. Allow the audio driver to see a cache of these values for
inspection during interrupt context.

To do this we need to stop satisfying any bits from volatile registers
from cache - there's no real benefit from doing so anyway, we did the
read already.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz

mfd: Use the value of the final spin when reading the AUXADC

2009-04-04T22:32:24+00:00

Reverse the order of the tests for loop exit so we use a valid value
before we time out.  Vanishingly unlikely to happen since we retry for
several times the expected conversion time.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz

mfd: Support active high IRQs on WM835x

2009-04-04T22:32:20+00:00

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz

mfd: Use bulk read to fill WM8350 register cache

2009-04-04T22:32:19+00:00

Some I2C controllers have high overheads for setting up I2C operations
which makes the register cache setup on startup excessively slow since
it does a lot of small transactions. Reduce this overhead by doing a
bulk read of the entire register bank and filtering out what we don't
need later.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz

mfd: add support for WM8351 revision B

2009-03-12T23:20:24+00:00

No software visible difference from revision A.

Signed-off-by: Mark Brown 
Cc: Samuel Ortiz 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mfd: Ensure all WM8350 IRQs are masked at startup

2009-02-17T08:00:14+00:00

The IRQs might have been left enabled in hardware, generating spurious
IRQs before the drivers have registered.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz

mfd: wm8350 tries reaches -1

2009-02-17T08:00:13+00:00

With a postfix decrement tries will reach -1 rather than 0,
so the warning will not be issued even upon timeout.

Signed-off-by: Roel Kluin 
Acked-by: Mark Brown 
Signed-off-by: Samuel Ortiz

mfd: Improve diagnostics for WM8350 ID register probe

2009-02-17T08:00:12+00:00

Check the return value of the device I/O functions when reading the
ID registers so we can provide a more useful diagnostic when we're
having trouble talking to the device.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz

mfd: Initialise WM8350 interrupts earlier

2009-02-17T08:00:11+00:00

Ensure that the interrupt handling is configured before we do platform
specific init. This allows the platform specific initialisation to
configure things which use interrupts safely.

Signed-off-by: Mark Brown 
Signed-off-by: Samuel Ortiz

leds: Add WM8350 LED driver

2009-01-08T12:38:58+00:00

The voltage and current regulators on the WM8350 AudioPlus PMIC can be
used in concert to provide a power efficient LED driver.  This driver
implements support for this within the standard LED class.

Platform initialisation code should configure the LED hardware in the
init callback provided by the WM8350 core driver.  The callback should
use wm8350_isink_set_flash(), wm8350_dcdc25_set_mode() and
wm8350_dcdc_set_slot() to configure the operating parameters of the
regulators for their hardware and then then use wm8350_register_led() to
instantiate the LED driver.

This driver was originally written by Liam Girdwood, though it has been
extensively modified since then.

Signed-off-by: Mark Brown 
Signed-off-by: Richard Purdie