diff options
Diffstat (limited to 'drivers/misc/ds1682.c')
| -rw-r--r-- | drivers/misc/ds1682.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/misc/ds1682.c b/drivers/misc/ds1682.c index 21fc5bc85c5c..5f8dcd0e3848 100644 --- a/drivers/misc/ds1682.c +++ b/drivers/misc/ds1682.c @@ -32,6 +32,7 @@ #include <linux/i2c.h> #include <linux/string.h> #include <linux/list.h> +#include <linux/nvmem-provider.h> #include <linux/sysfs.h> #include <linux/ctype.h> #include <linux/hwmon-sysfs.h> @@ -197,11 +198,43 @@ static const struct bin_attribute ds1682_eeprom_attr = { .write = ds1682_eeprom_write, }; +static int ds1682_nvmem_read(void *priv, unsigned int offset, void *val, + size_t bytes) +{ + struct i2c_client *client = priv; + int ret; + + ret = i2c_smbus_read_i2c_block_data(client, DS1682_REG_EEPROM + offset, + bytes, val); + return ret < 0 ? ret : 0; +} + +static int ds1682_nvmem_write(void *priv, unsigned int offset, void *val, + size_t bytes) +{ + struct i2c_client *client = priv; + int ret; + + ret = i2c_smbus_write_i2c_block_data(client, DS1682_REG_EEPROM + offset, + bytes, val); + return ret < 0 ? ret : 0; +} + /* * Called when a ds1682 device is matched with this driver */ static int ds1682_probe(struct i2c_client *client) { + struct nvmem_config config = { + .dev = &client->dev, + .owner = THIS_MODULE, + .type = NVMEM_TYPE_EEPROM, + .reg_read = ds1682_nvmem_read, + .reg_write = ds1682_nvmem_write, + .size = DS1682_EEPROM_SIZE, + .priv = client, + }; + struct nvmem_device *nvmem; int rc; if (!i2c_check_functionality(client->adapter, @@ -211,6 +244,10 @@ static int ds1682_probe(struct i2c_client *client) goto exit; } + nvmem = devm_nvmem_register(&client->dev, &config); + if (IS_ENABLED(CONFIG_NVMEM) && IS_ERR(nvmem)) + return PTR_ERR(nvmem); + rc = sysfs_create_group(&client->dev.kobj, &ds1682_group); if (rc) goto exit; |