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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2017-03-17 10:05:18 +0000
committerLee Jones <lee.jones@linaro.org>2017-03-23 11:45:50 +0000
commitf6dd8449cd50de25881b76cecf1086bebeb11fe8 (patch)
treefa757139b73dc9a8e79e46952d93db19dd5e8068 /drivers/mfd/wm831x-core.c
parentc1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201 (diff)
mfd: wm831x: Add basic device tree binding
Add the basic ability to register the device through device tree, more work is needed to get each individual sub-driver functioning correctly but this is enough to get the device to probe from device tree. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd/wm831x-core.c')
-rw-r--r--drivers/mfd/wm831x-core.c29
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index 3e0e99ec5836..13a4c1190dca 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -19,6 +19,8 @@
#include <linux/mfd/core.h>
#include <linux/slab.h>
#include <linux/err.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/mfd/wm831x/core.h>
#include <linux/mfd/wm831x/pdata.h>
@@ -1613,12 +1615,24 @@ struct regmap_config wm831x_regmap_config = {
};
EXPORT_SYMBOL_GPL(wm831x_regmap_config);
+const struct of_device_id wm831x_of_match[] = {
+ { .compatible = "wlf,wm8310", .data = (void *)WM8310 },
+ { .compatible = "wlf,wm8311", .data = (void *)WM8311 },
+ { .compatible = "wlf,wm8312", .data = (void *)WM8312 },
+ { .compatible = "wlf,wm8320", .data = (void *)WM8320 },
+ { .compatible = "wlf,wm8321", .data = (void *)WM8321 },
+ { .compatible = "wlf,wm8325", .data = (void *)WM8325 },
+ { .compatible = "wlf,wm8326", .data = (void *)WM8326 },
+ { },
+};
+EXPORT_SYMBOL_GPL(wm831x_of_match);
+
/*
* Instantiate the generic non-control parts of the device.
*/
-int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
+int wm831x_device_init(struct wm831x *wm831x, int irq)
{
- struct wm831x_pdata *pdata = dev_get_platdata(wm831x->dev);
+ struct wm831x_pdata *pdata = &wm831x->pdata;
int rev, wm831x_num;
enum wm831x_parent parent;
int ret, i;
@@ -1627,8 +1641,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
mutex_init(&wm831x->key_lock);
dev_set_drvdata(wm831x->dev, wm831x);
- if (pdata)
- wm831x->soft_shutdown = pdata->soft_shutdown;
+ wm831x->soft_shutdown = pdata->soft_shutdown;
ret = wm831x_reg_read(wm831x, WM831X_PARENT_ID);
if (ret < 0) {
@@ -1663,7 +1676,7 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
*/
if (ret == 0) {
dev_info(wm831x->dev, "Device is an engineering sample\n");
- ret = id;
+ ret = wm831x->type;
}
switch (ret) {
@@ -1736,9 +1749,9 @@ int wm831x_device_init(struct wm831x *wm831x, unsigned long id, int irq)
/* This will need revisiting in future but is OK for all
* current parts.
*/
- if (parent != id)
- dev_warn(wm831x->dev, "Device was registered as a WM%lx\n",
- id);
+ if (parent != wm831x->type)
+ dev_warn(wm831x->dev, "Device was registered as a WM%x\n",
+ wm831x->type);
/* Bootstrap the user key */
ret = wm831x_reg_read(wm831x, WM831X_SECURITY_KEY);