diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2008-10-10 15:58:13 +0100 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2008-10-13 21:51:56 +0100 |
| commit | bcdd4efc1b6b8b98f30e127115f4bc7bbcd6f7ce (patch) | |
| tree | 5f58a36bcfefb07cc9a44faf38c91b8bc7e3c1c1 | |
| parent | 0e7203933224cbe09b5a9125f55b177b8dd5b1bd (diff) | |
| download | linux-bcdd4efc1b6b8b98f30e127115f4bc7bbcd6f7ce.tar.bz2 | |
mfd: Add initialisation callback for WM8350
Some functions of the WM8350 require board-specific initialisation on
startup. Provide a callback to the WM8350 driver in platform data
for platforms to use to configure the chip. Use of a callback allows
platforms to control the ordering of initialisation which can be
important.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Samuel Ortiz <sameo@openedhand.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
| -rw-r--r-- | drivers/mfd/wm8350-core.c | 12 | ||||
| -rw-r--r-- | drivers/mfd/wm8350-i2c.c | 2 | ||||
| -rw-r--r-- | include/linux/mfd/wm8350/core.h | 14 |
3 files changed, 25 insertions, 3 deletions
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c index c7552c0b7797..071834ba6954 100644 --- a/drivers/mfd/wm8350-core.c +++ b/drivers/mfd/wm8350-core.c @@ -388,7 +388,8 @@ out: } EXPORT_SYMBOL_GPL(wm8350_create_cache); -int wm8350_device_init(struct wm8350 *wm8350) +int wm8350_device_init(struct wm8350 *wm8350, + struct wm8350_platform_data *pdata) { int ret = -EINVAL; u16 id1, id2, mask, mode; @@ -439,6 +440,15 @@ int wm8350_device_init(struct wm8350 *wm8350) return ret; } + if (pdata->init) { + ret = pdata->init(wm8350); + if (ret != 0) { + dev_err(wm8350->dev, "Platform init() failed: %d\n", + ret); + goto err; + } + } + return 0; err: diff --git a/drivers/mfd/wm8350-i2c.c b/drivers/mfd/wm8350-i2c.c index 2b0569cf9512..245b790961aa 100644 --- a/drivers/mfd/wm8350-i2c.c +++ b/drivers/mfd/wm8350-i2c.c @@ -65,7 +65,7 @@ static int wm8350_i2c_probe(struct i2c_client *i2c, wm8350->read_dev = wm8350_i2c_read_device; wm8350->write_dev = wm8350_i2c_write_device; - ret = wm8350_device_init(wm8350); + ret = wm8350_device_init(wm8350, i2c->dev.platform_data); if (ret < 0) goto err; diff --git a/include/linux/mfd/wm8350/core.h b/include/linux/mfd/wm8350/core.h index 94778c1669dc..8f2beae6278e 100644 --- a/include/linux/mfd/wm8350/core.h +++ b/include/linux/mfd/wm8350/core.h @@ -564,10 +564,22 @@ struct wm8350 { u16 *reg_cache; }; +/** + * Data to be supplied by the platform to initialise the WM8350. + * + * @init: Function called during driver initialisation. Should be + * used by the platform to configure GPIO functions and similar. + */ +struct wm8350_platform_data { + int (*init)(struct wm8350 *wm8350); +}; + + /* * WM8350 device initialisation and exit. */ -int wm8350_device_init(struct wm8350 *wm8350); +int wm8350_device_init(struct wm8350 *wm8350, + struct wm8350_platform_data *pdata); void wm8350_device_exit(struct wm8350 *wm8350); /* |