@@ -12,6 +12,7 @@
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
+#include <linux/of_device.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/mutex.h>
@@ -175,6 +176,68 @@ static const struct i2c_device_id at24_ids[] = {
};
MODULE_DEVICE_TABLE(i2c, at24_ids);
+static const struct of_device_id at24_of_match[] = {
+ {
+ .compatible = "atmel,24c00",
+ .data = (void *)AT24_DEVICE_MAGIC(128 / 8, AT24_FLAG_TAKE8ADDR)
+ },
+ {
+ .compatible = "atmel,24c01",
+ .data = (void *)AT24_DEVICE_MAGIC(1024 / 8, 0)
+ },
+ {
+ .compatible = "atmel,24c02",
+ .data = (void *)AT24_DEVICE_MAGIC(16,
+ AT24_FLAG_SERIAL | AT24_FLAG_READONLY)
+ },
+ {
+ .compatible = "at24,spd",
+ .data = (void *)AT24_DEVICE_MAGIC(2048 / 8,
+ AT24_FLAG_READONLY | AT24_FLAG_IRUGO)
+ },
+ {
+ .compatible = "atmel,24c04",
+ .data = (void *)AT24_DEVICE_MAGIC(4096 / 8, 0)
+ },
+ {
+ .compatible = "atmel,24c08",
+ .data = (void *)AT24_DEVICE_MAGIC(8192 / 8, 0)
+ },
+ {
+ .compatible = "atmel,24c16",
+ .data = (void *)AT24_DEVICE_MAGIC(16384 / 8, 0)
+ },
+ {
+ .compatible = "atmel,24c32",
+ .data = (void *)AT24_DEVICE_MAGIC(32768 / 8, AT24_FLAG_ADDR16)
+ },
+ {
+ .compatible = "atmel,24c64",
+ .data = (void *)AT24_DEVICE_MAGIC(16,
+ AT24_FLAG_ADDR16 |
+ AT24_FLAG_SERIAL |
+ AT24_FLAG_READONLY)
+ },
+ {
+ .compatible = "atmel,24c128",
+ .data = (void *)AT24_DEVICE_MAGIC(131072 / 8, AT24_FLAG_ADDR16)
+ },
+ {
+ .compatible = "atmel,24c256",
+ .data = (void *)AT24_DEVICE_MAGIC(262144 / 8, AT24_FLAG_ADDR16)
+ },
+ {
+ .compatible = "atmel,24c512",
+ .data = (void *)AT24_DEVICE_MAGIC(524288 / 8, AT24_FLAG_ADDR16)
+ },
+ {
+ .compatible = "atmel,24c1024",
+ .data = (void *)AT24_DEVICE_MAGIC(1048576 / 8, AT24_FLAG_ADDR16)
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, at24_of_match);
+
static const struct acpi_device_id at24_acpi_ids[] = {
{ "INT3499", AT24_DEVICE_MAGIC(8192 / 8, 0) },
{ }
@@ -598,7 +661,10 @@ static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
if (client->dev.platform_data) {
chip = *(struct at24_platform_data *)client->dev.platform_data;
} else {
- if (id) {
+ if (client->dev.of_node) {
+ magic = (kernel_ulong_t)
+ of_device_get_match_data(&client->dev);
+ } else if (id) {
magic = id->driver_data;
} else {
const struct acpi_device_id *aid;
@@ -814,6 +880,7 @@ static int at24_remove(struct i2c_client *client)
static struct i2c_driver at24_driver = {
.driver = {
.name = "at24",
+ .of_match_table = at24_of_match,
.acpi_match_table = ACPI_PTR(at24_acpi_ids),
},
.probe = at24_probe,
The driver doesn't have a struct of_device_id table but supported devices are registered via Device Trees. This is working on the assumption that a I2C device registered via OF will always match a legacy I2C device ID and that the MODALIAS reported will always be of the form i2c:<device>. But this could change in the future so the correct approach is to have an OF device ID table if the devices are registered via OF. Suggested-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> --- Changes in v2: - Only add a single OF device ID entry for each device type (Wolfram Sang). drivers/misc/eeprom/at24.c | 69 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 68 insertions(+), 1 deletion(-)