misc: i2c_eeprom: add eeprom write support
Write up to page size in each i2c transfer.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: Heiko Schocher <hs@denx.de>
diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c
index ce2cad4..f25d054 100644
--- a/drivers/misc/i2c_eeprom.c
+++ b/drivers/misc/i2c_eeprom.c
@@ -5,6 +5,7 @@
#include <common.h>
#include <linux/err.h>
+#include <linux/kernel.h>
#include <dm.h>
#include <i2c.h>
#include <i2c_eeprom.h>
@@ -38,7 +39,24 @@
static int i2c_eeprom_std_write(struct udevice *dev, int offset,
const uint8_t *buf, int size)
{
- return -ENODEV;
+ struct i2c_eeprom *priv = dev_get_priv(dev);
+ int ret;
+
+ while (size > 0) {
+ int write_size = min_t(int, size, priv->pagesize);
+
+ ret = dm_i2c_write(dev, offset, buf, write_size);
+ if (ret)
+ return ret;
+
+ offset += write_size;
+ buf += write_size;
+ size -= write_size;
+
+ udelay(10000);
+ }
+
+ return 0;
}
static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {