diff options
Diffstat (limited to 'drivers/mfd/tps65910.c')
| -rw-r--r-- | drivers/mfd/tps65910.c | 80 |
1 files changed, 79 insertions, 1 deletions
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c index 7dffbe1a50c6..a00c09ea0793 100644 --- a/drivers/mfd/tps65910.c +++ b/drivers/mfd/tps65910.c @@ -23,6 +23,7 @@ #include <linux/mfd/core.h> #include <linux/regmap.h> #include <linux/mfd/tps65910.h> +#include <linux/of_device.h> static struct mfd_cell tps65910s[] = { { @@ -129,6 +130,77 @@ err_sleep_init: return ret; } +#ifdef CONFIG_OF +static struct of_device_id tps65910_of_match[] = { + { .compatible = "ti,tps65910", .data = (void *)TPS65910}, + { .compatible = "ti,tps65911", .data = (void *)TPS65911}, + { }, +}; +MODULE_DEVICE_TABLE(of, tps65910_of_match); + +static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client, + int *chip_id) +{ + struct device_node *np = client->dev.of_node; + struct tps65910_board *board_info; + unsigned int prop; + const struct of_device_id *match; + unsigned int prop_array[TPS6591X_MAX_NUM_GPIO]; + int ret = 0; + int idx; + + match = of_match_device(tps65910_of_match, &client->dev); + if (!match) { + dev_err(&client->dev, "Failed to find matching dt id\n"); + return NULL; + } + + *chip_id = (int)match->data; + + board_info = devm_kzalloc(&client->dev, sizeof(*board_info), + GFP_KERNEL); + if (!board_info) { + dev_err(&client->dev, "Failed to allocate pdata\n"); + return NULL; + } + + ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop); + if (!ret) + board_info->vmbch_threshold = prop; + else if (*chip_id == TPS65911) + dev_warn(&client->dev, "VMBCH-Threshold not specified"); + + ret = of_property_read_u32(np, "ti,vmbch2-threshold", &prop); + if (!ret) + board_info->vmbch2_threshold = prop; + else if (*chip_id == TPS65911) + dev_warn(&client->dev, "VMBCH2-Threshold not specified"); + + ret = of_property_read_u32_array(np, "ti,en-gpio-sleep", + prop_array, TPS6591X_MAX_NUM_GPIO); + if (!ret) + for (idx = 0; idx < ARRAY_SIZE(prop_array); idx++) + board_info->en_gpio_sleep[idx] = (prop_array[idx] != 0); + else if (ret != -EINVAL) { + dev_err(&client->dev, + "error reading property ti,en-gpio-sleep: %d\n.", ret); + return NULL; + } + + + board_info->irq = client->irq; + board_info->irq_base = -1; + board_info->gpio_base = -1; + + return board_info; +} +#else +static inline struct tps65910_board *tps65910_parse_dt( + struct i2c_client *client) +{ + return NULL; +} +#endif static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) @@ -137,8 +209,13 @@ static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, struct tps65910_board *pmic_plat_data; struct tps65910_platform_data *init_data; int ret = 0; + int chip_id = id->driver_data; pmic_plat_data = dev_get_platdata(&i2c->dev); + + if (!pmic_plat_data && i2c->dev.of_node) + pmic_plat_data = tps65910_parse_dt(i2c, &chip_id); + if (!pmic_plat_data) return -EINVAL; @@ -155,7 +232,7 @@ static __devinit int tps65910_i2c_probe(struct i2c_client *i2c, i2c_set_clientdata(i2c, tps65910); tps65910->dev = &i2c->dev; tps65910->i2c_client = i2c; - tps65910->id = id->driver_data; + tps65910->id = chip_id; mutex_init(&tps65910->io_mutex); tps65910->regmap = regmap_init_i2c(i2c, &tps65910_regmap_config); @@ -215,6 +292,7 @@ static struct i2c_driver tps65910_i2c_driver = { .driver = { .name = "tps65910", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(tps65910_of_match), }, .probe = tps65910_i2c_probe, .remove = __devexit_p(tps65910_i2c_remove), |