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authorHeiner Kallweit <hkallweit1@gmail.com>2017-11-28 21:51:45 +0100
committerBartosz Golaszewski <brgl@bgdev.pl>2018-01-01 19:40:46 +0100
commit8e5888e17f48d983eee27bd3ebf36fd03c8bb1e5 (patch)
tree423689ef63df72770a785150862debece470230f /drivers
parent4604948641384555da3ad5fc9f012e939e622c37 (diff)
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')
-rw-r--r--drivers/misc/eeprom/at24.c27
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);

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