i2c_eeprom: Add reading support

[u-boot] / drivers / misc / i2c_eeprom.c

diff --git a/drivers/misc/i2c_eeprom.c b/drivers/misc/i2c_eeprom.c
index 814134a2cb1e076747464098e50fc06a160d10bf..c9f4174bad42f928e707e7a2570e24a827bca536 100644 (file)
--- a/drivers/misc/i2c_eeprom.c
+++ b/drivers/misc/i2c_eeprom.c
@@ -13,7 +13,7 @@
 static int i2c_eeprom_read(struct udevice *dev, int offset, uint8_t *buf,
                           int size)
 {
-       return -ENODEV;
+       return dm_i2c_read(dev, offset, buf, size);
 }
 
 static int i2c_eeprom_write(struct udevice *dev, int offset,
@@ -27,23 +27,46 @@ struct i2c_eeprom_ops i2c_eeprom_std_ops = {
        .write  = i2c_eeprom_write,
 };
 
+static int i2c_eeprom_std_ofdata_to_platdata(struct udevice *dev)
+{
+       struct i2c_eeprom *priv = dev_get_priv(dev);
+       u64 data = dev_get_driver_data(dev);
+
+       /* 6 bit -> page size of up to 2^63 (should be sufficient) */
+       priv->pagewidth = data & 0x3F;
+       priv->pagesize = (1 << priv->pagewidth);
+
+       return 0;
+}
+
 int i2c_eeprom_std_probe(struct udevice *dev)
 {
        return 0;
 }
 
 static const struct udevice_id i2c_eeprom_std_ids[] = {
-       { .compatible = "i2c-eeprom" },
+       { .compatible = "i2c-eeprom", .data = 0 },
+       { .compatible = "atmel,24c01a", .data = 3 },
+       { .compatible = "atmel,24c02", .data = 3 },
+       { .compatible = "atmel,24c04", .data = 4 },
+       { .compatible = "atmel,24c08a", .data = 4 },
+       { .compatible = "atmel,24c16a", .data = 4 },
+       { .compatible = "atmel,24c32", .data = 5 },
+       { .compatible = "atmel,24c64", .data = 5 },
+       { .compatible = "atmel,24c128", .data = 6 },
+       { .compatible = "atmel,24c256", .data = 6 },
+       { .compatible = "atmel,24c512", .data = 6 },
        { }
 };
 
 U_BOOT_DRIVER(i2c_eeprom_std) = {
-       .name           = "i2c_eeprom",
-       .id             = UCLASS_I2C_EEPROM,
-       .of_match       = i2c_eeprom_std_ids,
-       .probe          = i2c_eeprom_std_probe,
-       .priv_auto_alloc_size = sizeof(struct i2c_eeprom),
-       .ops            = &i2c_eeprom_std_ops,
+       .name                   = "i2c_eeprom",
+       .id                     = UCLASS_I2C_EEPROM,
+       .of_match               = i2c_eeprom_std_ids,
+       .probe                  = i2c_eeprom_std_probe,
+       .ofdata_to_platdata     = i2c_eeprom_std_ofdata_to_platdata,
+       .priv_auto_alloc_size   = sizeof(struct i2c_eeprom),
+       .ops                    = &i2c_eeprom_std_ops,
 };
 
 UCLASS_DRIVER(i2c_eeprom) = {