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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>
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1 changed files with 19 additions and 1 deletions
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@ -5,6 +5,7 @@
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#include <common.h>
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#include <linux/err.h>
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#include <linux/kernel.h>
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#include <dm.h>
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#include <i2c.h>
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#include <i2c_eeprom.h>
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@ -38,7 +39,24 @@ static int i2c_eeprom_std_read(struct udevice *dev, int offset, uint8_t *buf,
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static int i2c_eeprom_std_write(struct udevice *dev, int offset,
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const uint8_t *buf, int size)
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{
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return -ENODEV;
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struct i2c_eeprom *priv = dev_get_priv(dev);
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int ret;
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while (size > 0) {
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int write_size = min_t(int, size, priv->pagesize);
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ret = dm_i2c_write(dev, offset, buf, write_size);
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if (ret)
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return ret;
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offset += write_size;
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buf += write_size;
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size -= write_size;
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udelay(10000);
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}
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return 0;
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}
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static const struct i2c_eeprom_ops i2c_eeprom_std_ops = {
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