diff options
| author | Charles Keepax <ckeepax@opensource.wolfsonmicro.com> | 2017-03-17 11:05:18 +0100 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2017-03-23 12:45:50 +0100 |
| commit | f6dd8449cd50de25881b76cecf1086bebeb11fe8 (patch) | |
| tree | fa757139b73dc9a8e79e46952d93db19dd5e8068 /drivers/mfd/wm831x-i2c.c | |
| parent | Linux 4.11-rc1 (diff) | |
| download | linux-f6dd8449cd50de25881b76cecf1086bebeb11fe8.tar.xz linux-f6dd8449cd50de25881b76cecf1086bebeb11fe8.zip | |
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-i2c.c')
| -rw-r--r-- | drivers/mfd/wm831x-i2c.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/mfd/wm831x-i2c.c b/drivers/mfd/wm831x-i2c.c index 824bcbaa9624..781af060f32d 100644 --- a/drivers/mfd/wm831x-i2c.c +++ b/drivers/mfd/wm831x-i2c.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/regmap.h> #include <linux/mfd/wm831x/core.h> @@ -27,15 +29,26 @@ static int wm831x_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { + struct wm831x_pdata *pdata = dev_get_platdata(&i2c->dev); + const struct of_device_id *of_id; struct wm831x *wm831x; + enum wm831x_parent type; int ret; + if (i2c->dev.of_node) { + of_id = of_match_device(wm831x_of_match, &i2c->dev); + type = (enum wm831x_parent)of_id->data; + } else { + type = (enum wm831x_parent)id->driver_data; + } + wm831x = devm_kzalloc(&i2c->dev, sizeof(struct wm831x), GFP_KERNEL); if (wm831x == NULL) return -ENOMEM; i2c_set_clientdata(i2c, wm831x); wm831x->dev = &i2c->dev; + wm831x->type = type; wm831x->regmap = devm_regmap_init_i2c(i2c, &wm831x_regmap_config); if (IS_ERR(wm831x->regmap)) { @@ -45,7 +58,10 @@ static int wm831x_i2c_probe(struct i2c_client *i2c, return ret; } - return wm831x_device_init(wm831x, id->driver_data, i2c->irq); + if (pdata) + memcpy(&wm831x->pdata, pdata, sizeof(*pdata)); + + return wm831x_device_init(wm831x, i2c->irq); } static int wm831x_i2c_remove(struct i2c_client *i2c) @@ -94,6 +110,7 @@ static struct i2c_driver wm831x_i2c_driver = { .driver = { .name = "wm831x", .pm = &wm831x_pm_ops, + .of_match_table = of_match_ptr(wm831x_of_match), }, .probe = wm831x_i2c_probe, .remove = wm831x_i2c_remove, |