diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2017-11-28 21:51:45 +0100 |
|---|---|---|
| committer | Bartosz Golaszewski <brgl@bgdev.pl> | 2018-01-01 19:40:46 +0100 |
| commit | 8e5888e17f48d983eee27bd3ebf36fd03c8bb1e5 (patch) | |
| tree | 423689ef63df72770a785150862debece470230f /drivers/misc | |
| parent | eeprom: at24: change at24_translate_offset return type (diff) | |
| download | linux-8e5888e17f48d983eee27bd3ebf36fd03c8bb1e5.tar.xz linux-8e5888e17f48d983eee27bd3ebf36fd03c8bb1e5.zip | |
eeprom: at24: add regmap-based write function
Add a regmap-based write function.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/eeprom/at24.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index d00e9b509546..fa712279183b 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -538,6 +538,31 @@ static ssize_t at24_eeprom_write_smbus_byte(struct at24_data *at24, return -ETIMEDOUT; } +static ssize_t at24_regmap_write(struct at24_data *at24, const char *buf, + unsigned int offset, size_t count) +{ + unsigned long timeout, write_time; + struct at24_client *at24_client; + struct i2c_client *client; + struct regmap *regmap; + int ret; + + at24_client = at24_translate_offset(at24, &offset); + regmap = at24_client->regmap; + client = at24_client->client; + count = at24_adjust_write_count(at24, offset, count); + + loop_until_timeout(timeout, write_time) { + ret = regmap_bulk_write(regmap, offset, buf, count); + dev_dbg(&client->dev, "write %zu@%d --> %d (%ld)\n", + count, offset, ret, jiffies); + if (!ret) + return count; + } + + return -ETIMEDOUT; +} + static ssize_t at24_eeprom_write_i2c(struct at24_data *at24, const char *buf, unsigned int offset, size_t count) { @@ -653,7 +678,7 @@ static int at24_write(void *priv, unsigned int off, void *val, size_t count) while (count) { int status; - status = at24->write_func(at24, buf, off, count); + status = at24_regmap_write(at24, buf, off, count); if (status < 0) { mutex_unlock(&at24->lock); pm_runtime_put(dev); |