Add support for emulating the following EEPROMs:
* 24c01 - 1024 bit
* 24c128 - 128k bit
* 24c256 - 256k bit
* 24c512 - 512k bit
The flag bits in the device id were shifted up 1 bit to make
room for saving the 24c512's size. 24c512 uses the full 16-bit
address space of a 2-byte addressable EEPROM.
Signed-off-by: Patrick Williams <alp...@amazon.com>
---
drivers/i2c/i2c-slave-eeprom.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c
index efee56106251..65419441313b 100644
--- a/drivers/i2c/i2c-slave-eeprom.c
+++ b/drivers/i2c/i2c-slave-eeprom.c
@@ -37,9 +37,9 @@ struct eeprom_data {
u8 buffer[];
};
-#define I2C_SLAVE_BYTELEN GENMASK(15, 0)
-#define I2C_SLAVE_FLAG_ADDR16 BIT(16)
-#define I2C_SLAVE_FLAG_RO BIT(17)
+#define I2C_SLAVE_BYTELEN GENMASK(16, 0)
+#define I2C_SLAVE_FLAG_ADDR16 BIT(17)
+#define I2C_SLAVE_FLAG_RO BIT(18)
#define I2C_SLAVE_DEVICE_MAGIC(_len, _flags) ((_flags) | (_len))
static int i2c_slave_eeprom_slave_cb(struct i2c_client *client,
@@ -171,12 +171,20 @@ static int i2c_slave_eeprom_remove(struct i2c_client
*client)
}
static const struct i2c_device_id i2c_slave_eeprom_id[] = {
+ { "slave-24c01", I2C_SLAVE_DEVICE_MAGIC(1024 / 8, 0) },
+ { "slave-24c01ro", I2C_SLAVE_DEVICE_MAGIC(1024 / 8, I2C_SLAVE_FLAG_RO)
},
{ "slave-24c02", I2C_SLAVE_DEVICE_MAGIC(2048 / 8, 0) },
{ "slave-24c02ro", I2C_SLAVE_DEVICE_MAGIC(2048 / 8, I2C_SLAVE_FLAG_RO)
},
{ "slave-24c32", I2C_SLAVE_DEVICE_MAGIC(32768 / 8,
I2C_SLAVE_FLAG_ADDR16) },
{ "slave-24c32ro", I2C_SLAVE_DEVICE_MAGIC(32768 / 8,
I2C_SLAVE_FLAG_ADDR16 | I2C_SLAVE_FLAG_RO) },
{ "slave-24c64", I2C_SLAVE_DEVICE_MAGIC(65536 / 8,
I2C_SLAVE_FLAG_ADDR16) },
{ "slave-24c64ro", I2C_SLAVE_DEVICE_MAGIC(65536 / 8,
I2C_SLAVE_FLAG_ADDR16 | I2C_SLAVE_FLAG_RO) },
+ { "slave-24c128", I2C_SLAVE_DEVICE_MAGIC(131072 / 8,
I2C_SLAVE_FLAG_ADDR16) },
+ { "slave-24c128ro", I2C_SLAVE_DEVICE_MAGIC(131072 / 8,
I2C_SLAVE_FLAG_ADDR16 | I2C_SLAVE_FLAG_RO) },
+ { "slave-24c256", I2C_SLAVE_DEVICE_MAGIC(262144 / 8,
I2C_SLAVE_FLAG_ADDR16) },
+ { "slave-24c256ro", I2C_SLAVE_DEVICE_MAGIC(262144 / 8,
I2C_SLAVE_FLAG_ADDR16 | I2C_SLAVE_FLAG_RO) },
+ { "slave-24c512", I2C_SLAVE_DEVICE_MAGIC(524288 / 8,
I2C_SLAVE_FLAG_ADDR16) },
+ { "slave-24c512ro", I2C_SLAVE_DEVICE_MAGIC(524288 / 8,
I2C_SLAVE_FLAG_ADDR16 | I2C_SLAVE_FLAG_RO) },
{ }
};
MODULE_DEVICE_TABLE(i2c, i2c_slave_eeprom_id);
--
2.17.2 (Apple Git-113)
