diff options
Diffstat (limited to 'drivers/mfd/tc3589x.c')
| -rw-r--r-- | drivers/mfd/tc3589x.c | 84 |
1 files changed, 59 insertions, 25 deletions
diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c index 2cf636c267d9..bd83accc0f6d 100644 --- a/drivers/mfd/tc3589x.c +++ b/drivers/mfd/tc3589x.c @@ -13,8 +13,10 @@ #include <linux/slab.h> #include <linux/i2c.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/mfd/core.h> #include <linux/mfd/tc3589x.h> +#include <linux/err.h> /** * enum tc3589x_version - indicates the TC3589x version @@ -160,7 +162,7 @@ static const struct mfd_cell tc3589x_dev_gpio[] = { .name = "tc3589x-gpio", .num_resources = ARRAY_SIZE(gpio_resources), .resources = &gpio_resources[0], - .of_compatible = "tc3589x-gpio", + .of_compatible = "toshiba,tc3589x-gpio", }, }; @@ -169,7 +171,7 @@ static const struct mfd_cell tc3589x_dev_keypad[] = { .name = "tc3589x-keypad", .num_resources = ARRAY_SIZE(keypad_resources), .resources = &keypad_resources[0], - .of_compatible = "tc3589x-keypad", + .of_compatible = "toshiba,tc3589x-keypad", }, }; @@ -318,45 +320,74 @@ static int tc3589x_device_init(struct tc3589x *tc3589x) return ret; } -static int tc3589x_of_probe(struct device_node *np, - struct tc3589x_platform_data *pdata) +#ifdef CONFIG_OF +static const struct of_device_id tc3589x_match[] = { + /* Legacy compatible string */ + { .compatible = "tc3589x", .data = (void *) TC3589X_UNKNOWN }, + { .compatible = "toshiba,tc35890", .data = (void *) TC3589X_TC35890 }, + { .compatible = "toshiba,tc35892", .data = (void *) TC3589X_TC35892 }, + { .compatible = "toshiba,tc35893", .data = (void *) TC3589X_TC35893 }, + { .compatible = "toshiba,tc35894", .data = (void *) TC3589X_TC35894 }, + { .compatible = "toshiba,tc35895", .data = (void *) TC3589X_TC35895 }, + { .compatible = "toshiba,tc35896", .data = (void *) TC3589X_TC35896 }, + { } +}; + +MODULE_DEVICE_TABLE(of, tc3589x_match); + +static struct tc3589x_platform_data * +tc3589x_of_probe(struct device *dev, enum tc3589x_version *version) { + struct device_node *np = dev->of_node; + struct tc3589x_platform_data *pdata; struct device_node *child; + const struct of_device_id *of_id; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return ERR_PTR(-ENOMEM); + + of_id = of_match_device(tc3589x_match, dev); + if (!of_id) + return ERR_PTR(-ENODEV); + *version = (enum tc3589x_version) of_id->data; for_each_child_of_node(np, child) { - if (!strcmp(child->name, "tc3589x_gpio")) { + if (of_device_is_compatible(child, "toshiba,tc3589x-gpio")) pdata->block |= TC3589x_BLOCK_GPIO; - } - if (!strcmp(child->name, "tc3589x_keypad")) { + if (of_device_is_compatible(child, "toshiba,tc3589x-keypad")) pdata->block |= TC3589x_BLOCK_KEYPAD; - } } - return 0; + return pdata; } +#else +static inline struct tc3589x_platform_data * +tc3589x_of_probe(struct device *dev, enum tc3589x_version *version) +{ + dev_err(dev, "no device tree support\n"); + return ERR_PTR(-ENODEV); +} +#endif static int tc3589x_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { - struct tc3589x_platform_data *pdata = dev_get_platdata(&i2c->dev); struct device_node *np = i2c->dev.of_node; + struct tc3589x_platform_data *pdata = dev_get_platdata(&i2c->dev); struct tc3589x *tc3589x; + enum tc3589x_version version; int ret; if (!pdata) { - if (np) { - pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL); - if (!pdata) - return -ENOMEM; - - ret = tc3589x_of_probe(np, pdata); - if (ret) - return ret; - } - else { + pdata = tc3589x_of_probe(&i2c->dev, &version); + if (IS_ERR(pdata)) { dev_err(&i2c->dev, "No platform data or DT found\n"); - return -EINVAL; + return PTR_ERR(pdata); } + } else { + /* When not probing from device tree we have this ID */ + version = id->driver_data; } if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA @@ -375,7 +406,7 @@ static int tc3589x_probe(struct i2c_client *i2c, tc3589x->pdata = pdata; tc3589x->irq_base = pdata->irq_base; - switch (id->driver_data) { + switch (version) { case TC3589X_TC35893: case TC3589X_TC35895: case TC3589X_TC35896: @@ -471,9 +502,12 @@ static const struct i2c_device_id tc3589x_id[] = { MODULE_DEVICE_TABLE(i2c, tc3589x_id); static struct i2c_driver tc3589x_driver = { - .driver.name = "tc3589x", - .driver.owner = THIS_MODULE, - .driver.pm = &tc3589x_dev_pm_ops, + .driver = { + .name = "tc3589x", + .owner = THIS_MODULE, + .pm = &tc3589x_dev_pm_ops, + .of_match_table = of_match_ptr(tc3589x_match), + }, .probe = tc3589x_probe, .remove = tc3589x_remove, .id_table = tc3589x_id, |