Add a regmap-based write function.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
---
v2:
- rebased
v3:
- improve readability
- re-introduce debug message
v4:
- no changes
v5:
- no changes
---
drivers/misc/eeprom/at24.c | 27 ++++++++++++++++++++++++++-
1 file changed, 26 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index e4bace389..ca80424f3 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -537,6 +537,31 @@ 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)
{
@@ -660,7 +685,7 @@ 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(&client->dev);
--
2.15.0
