Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8e5888e1 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Bartosz Golaszewski
Browse files

eeprom: at24: add regmap-based write function 



Add a regmap-based write function.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: default avatarBartosz Golaszewski <brgl@bgdev.pl>
parent 46049486

drivers/misc/eeprom/at24.c

+26 −1
Original line number Diff line number Diff line
@@ -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);