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path: root/drivers/mfd/bcm590xx.c
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Diffstat (limited to 'drivers/mfd/bcm590xx.c')
-rw-r--r--drivers/mfd/bcm590xx.c69
1 files changed, 54 insertions, 15 deletions
diff --git a/drivers/mfd/bcm590xx.c b/drivers/mfd/bcm590xx.c
index e9a33c79431b..e334de000e8c 100644
--- a/drivers/mfd/bcm590xx.c
+++ b/drivers/mfd/bcm590xx.c
@@ -28,42 +28,80 @@ static const struct mfd_cell bcm590xx_devs[] = {
},
};
-static const struct regmap_config bcm590xx_regmap_config = {
+static const struct regmap_config bcm590xx_regmap_config_pri = {
.reg_bits = 8,
.val_bits = 8,
- .max_register = BCM590XX_MAX_REGISTER,
+ .max_register = BCM590XX_MAX_REGISTER_PRI,
.cache_type = REGCACHE_RBTREE,
};
-static int bcm590xx_i2c_probe(struct i2c_client *i2c,
+static const struct regmap_config bcm590xx_regmap_config_sec = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = BCM590XX_MAX_REGISTER_SEC,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int bcm590xx_i2c_probe(struct i2c_client *i2c_pri,
const struct i2c_device_id *id)
{
struct bcm590xx *bcm590xx;
int ret;
- bcm590xx = devm_kzalloc(&i2c->dev, sizeof(*bcm590xx), GFP_KERNEL);
+ bcm590xx = devm_kzalloc(&i2c_pri->dev, sizeof(*bcm590xx), GFP_KERNEL);
if (!bcm590xx)
return -ENOMEM;
- i2c_set_clientdata(i2c, bcm590xx);
- bcm590xx->dev = &i2c->dev;
- bcm590xx->i2c_client = i2c;
+ i2c_set_clientdata(i2c_pri, bcm590xx);
+ bcm590xx->dev = &i2c_pri->dev;
+ bcm590xx->i2c_pri = i2c_pri;
- bcm590xx->regmap = devm_regmap_init_i2c(i2c, &bcm590xx_regmap_config);
- if (IS_ERR(bcm590xx->regmap)) {
- ret = PTR_ERR(bcm590xx->regmap);
- dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
+ bcm590xx->regmap_pri = devm_regmap_init_i2c(i2c_pri,
+ &bcm590xx_regmap_config_pri);
+ if (IS_ERR(bcm590xx->regmap_pri)) {
+ ret = PTR_ERR(bcm590xx->regmap_pri);
+ dev_err(&i2c_pri->dev, "primary regmap init failed: %d\n", ret);
return ret;
}
- ret = mfd_add_devices(&i2c->dev, -1, bcm590xx_devs,
+ /* Secondary I2C slave address is the base address with A(2) asserted */
+ bcm590xx->i2c_sec = i2c_new_dummy(i2c_pri->adapter,
+ i2c_pri->addr | BIT(2));
+ if (IS_ERR_OR_NULL(bcm590xx->i2c_sec)) {
+ dev_err(&i2c_pri->dev, "failed to add secondary I2C device\n");
+ return -ENODEV;
+ }
+ i2c_set_clientdata(bcm590xx->i2c_sec, bcm590xx);
+
+ bcm590xx->regmap_sec = devm_regmap_init_i2c(bcm590xx->i2c_sec,
+ &bcm590xx_regmap_config_sec);
+ if (IS_ERR(bcm590xx->regmap_sec)) {
+ ret = PTR_ERR(bcm590xx->regmap_sec);
+ dev_err(&bcm590xx->i2c_sec->dev,
+ "secondary regmap init failed: %d\n", ret);
+ goto err;
+ }
+
+ ret = mfd_add_devices(&i2c_pri->dev, -1, bcm590xx_devs,
ARRAY_SIZE(bcm590xx_devs), NULL, 0, NULL);
- if (ret < 0)
- dev_err(&i2c->dev, "failed to add sub-devices: %d\n", ret);
+ if (ret < 0) {
+ dev_err(&i2c_pri->dev, "failed to add sub-devices: %d\n", ret);
+ goto err;
+ }
+
+ return 0;
+err:
+ i2c_unregister_device(bcm590xx->i2c_sec);
return ret;
}
+static int bcm590xx_i2c_remove(struct i2c_client *i2c)
+{
+ mfd_remove_devices(&i2c->dev);
+ return 0;
+}
+
static const struct of_device_id bcm590xx_of_match[] = {
{ .compatible = "brcm,bcm59056" },
{ }
@@ -83,6 +121,7 @@ static struct i2c_driver bcm590xx_i2c_driver = {
.of_match_table = of_match_ptr(bcm590xx_of_match),
},
.probe = bcm590xx_i2c_probe,
+ .remove = bcm590xx_i2c_remove,
.id_table = bcm590xx_i2c_id,
};
module_i2c_driver(bcm590xx_i2c_driver);
@@ -90,4 +129,4 @@ module_i2c_driver(bcm590xx_i2c_driver);
MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
MODULE_DESCRIPTION("BCM590xx multi-function driver");
MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:bcm590xx");
+MODULE_ALIAS("i2c:bcm590xx");