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-rw-r--r--drivers/mfd/Kconfig1
-rw-r--r--drivers/mfd/wm8400-core.c31
2 files changed, 26 insertions, 6 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 8cd3dd9a69b..ddfb12b52f5 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -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
diff --git a/drivers/mfd/wm8400-core.c b/drivers/mfd/wm8400-core.c
index 6a0cedb5bb8..cf30d06a010 100644
--- a/drivers/mfd/wm8400-core.c
+++ b/drivers/mfd/wm8400-core.c
@@ -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)