Commit graph

7 commits

Author SHA1 Message Date
Mark Brown
65349d60d2 mfd: Convert MFD drivers to use module_platform_driver
Factors out some boilerplate code for drivers doing the default thing
for platform driver registration. Drivers using platform_driver_probe
or an initcall other than module_init can't be converted.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2012-01-09 00:37:31 +01:00
Kyle Manna
3d6271f92e mfd: Turn on the twl4030-madc MADC clock
Without turning the MADC clock on, no MADC conversions occur.

$ cat /sys/class/hwmon/hwmon0/device/in8_input
[   53.428436] twl4030_madc twl4030_madc: conversion timeout!
cat: read error: Resource temporarily unavailable

Signed-off-by: Kyle Manna <kyle@kylemanna.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-10-24 14:09:10 +02:00
Kyle Manna
d0e84caeb4 mfd: Check for twl4030-madc NULL pointer
If the twl4030-madc device wasn't registered, and another device, such
as twl4030-madc-hwmon, calls twl4030_madc_conversion() a NULL pointer is
dereferenced.

Signed-off-by: Kyle Manna <kyle@kylemanna.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-09-06 16:37:59 +02:00
Kyle Manna
66cc5b8e50 mfd: Copy the device pointer to the twl4030-madc structure
Worst case this fixes the following error:
[   72.086212] (NULL device *): conversion timeout!

Best case it prevents a crash

Signed-off-by: Kyle Manna <kyle@kylemanna.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-09-06 16:37:59 +02:00
Sanjeev Premi
e178ccb335 mfd: Fix mismatch in twl4030 mutex lock-unlock
A mutex is locked on entry into twl4030_madc_conversion().
Immediate return on some error conditions leaves the
mutex locked.

This patch ensures that mutex is always unlocked before
leaving the function.

Signed-off-by: Sanjeev Premi <premi@ti.com>
Cc: Keerthy <j-keerthy@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-07-31 23:28:27 +02:00
Axel Lin
0ea3e83bd8 mfd: Add "platform:" prefix for twl4030-madc platform modalias
Since 43cc71eed1 (platform: prefix MODALIAS
with "platform:"), the platform modalias is prefixed with "platform:".

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-23 10:42:05 +01:00
Keerthy
f99c1d4f94 mfd: Add twl4030 madc driver
Introducing a driver for MADC on TWL4030 powerIC. MADC stands for monitoring
ADC. This driver monitors the real time conversion of analog signals like
battery temperature, battery cuurent etc.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2011-03-23 10:42:00 +01:00