If the slave eeprom has a "firmware-name" in devicetree, then
pre-load the data in the eeprom with this file.
Signed-off-by: Björn Ardö <bjorn.ardo@xxxxxxxx>
---
drivers/i2c/i2c-slave-eeprom.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c
index db9763c..40e7d48 100644
--- a/drivers/i2c/i2c-slave-eeprom.c
+++ b/drivers/i2c/i2c-slave-eeprom.c
@@ -18,6 +18,7 @@
*/
#include <linux/bitfield.h>
+#include <linux/firmware.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/module.h>
@@ -120,6 +121,21 @@ static ssize_t i2c_slave_eeprom_bin_write(struct file *filp, struct kobject *kob
return count;
}
+static int i2c_slave_preload_eeprom_data(struct eeprom_data *eeprom, struct i2c_client *client, unsigned int size)
+{
+ if (client->dev.of_node) {
+ const struct firmware *fw;
+ const char *eeprom_data;
+ if (!of_property_read_string(client->dev.of_node, "firmware-name", &eeprom_data)) {
+ int ret = request_firmware_into_buf(&fw, eeprom_data, &client->dev, eeprom->buffer, size);
+ if (ret)
+ return ret;
+ release_firmware(fw);
+ }
+ }
+ return 0;
+}
+
static int i2c_slave_eeprom_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct eeprom_data *eeprom;
@@ -138,6 +154,10 @@ static int i2c_slave_eeprom_probe(struct i2c_client *client, const struct i2c_de
spin_lock_init(&eeprom->buffer_lock);
i2c_set_clientdata(client, eeprom);
+ ret = i2c_slave_preload_eeprom_data(eeprom, client, size);
+ if (ret)
+ return ret;
+
sysfs_bin_attr_init(&eeprom->bin);
eeprom->bin.attr.name = "slave-eeprom";
eeprom->bin.attr.mode = S_IRUSR | S_IWUSR;
--
2.1.4
