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mfd: Add platform data to support multiple WM831x devices per board

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If a system contains multiple WM831x devices we need to pass a device
number through to the MFD so that we use unique device IDs when we
instantiate child devices. In order to get support for this into 2.6.39
add some platform data to support the configuration, but no implementation
as yet.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2011-03-01 20:12:46 +00:00 committed by Samuel Ortiz
parent d664f20020
commit 93619c2106
1 changed files with 3 additions and 0 deletions
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3
include/linux/mfd/wm831x/pdata.h
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@ -104,6 +104,9 @@ struct wm831x_watchdog_pdata {
#define WM831X_MAX_ISINK 2
struct wm831x_pdata {
/** Used to distinguish multiple WM831x chips */
int wm831x_num;
/** Called before subdevices are set up */
int (*pre_init)(struct wm831x *wm831x);
/** Called after subdevices are set up */