redonkable/remarkable-linux
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mfd: Register WM8400 codec device

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Register a child device for the codec in the WM8400.

Also switch the unregistration of the MFD devices to use the MFD core
since the current code is hand rolling the same thing.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
Mark Brown 2008-12-18 10:54:22 +01:00 committed by Samuel Ortiz
parent 44faac3155
commit b8380c1a66
2 changed files with 26 additions and 6 deletions
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1
drivers/mfd/Kconfig
View file

@ -116,6 +116,7 @@ config PMIC_DA903X
config MFD_WM8400
tristate "Support Wolfson Microelectronics WM8400"
select MFD_CORE
depends on I2C
help
Support for the Wolfson Microelecronics WM8400 PMIC and audio

31
drivers/mfd/wm8400-core.c
View file

@ -15,6 +15,7 @@
#include <linux/bug.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/mfd/core.h>
#include <linux/mfd/wm8400-private.h>
#include <linux/mfd/wm8400-audio.h>
@ -239,6 +240,16 @@ void wm8400_reset_codec_reg_cache(struct wm8400 *wm8400)
}
EXPORT_SYMBOL_GPL(wm8400_reset_codec_reg_cache);
static int wm8400_register_codec(struct wm8400 *wm8400)
{
struct mfd_cell cell = {
.name = "wm8400-codec",
.driver_data = wm8400,
};
return mfd_add_devices(wm8400->dev, -1, &cell, 1, NULL, 0);
}
/*
* wm8400_init - Generic initialisation
*
@ -296,24 +307,32 @@ static int wm8400_init(struct wm8400 *wm8400,
reg = (reg & WM8400_CHIP_REV_MASK) >> WM8400_CHIP_REV_SHIFT;
dev_info(wm8400->dev, "WM8400 revision %x\n", reg);
ret = wm8400_register_codec(wm8400);
if (ret != 0) {
dev_err(wm8400->dev, "Failed to register codec\n");
goto err_children;
}
if (pdata && pdata->platform_init) {
ret = pdata->platform_init(wm8400->dev);
if (ret != 0)
if (ret != 0) {
dev_err(wm8400->dev, "Platform init failed: %d\n",
ret);
goto err_children;
}
} else
dev_warn(wm8400->dev, "No platform initialisation supplied\n");
return 0;
err_children:
mfd_remove_devices(wm8400->dev);
return ret;
}
static void wm8400_release(struct wm8400 *wm8400)
{
int i;
for (i = 0; i < ARRAY_SIZE(wm8400->regulators); i++)
if (wm8400->regulators[i].name)
platform_device_unregister(&wm8400->regulators[i]);
mfd_remove_devices(wm8400->dev);
}
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)