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From 8d0697f8962ef52e06012101efdea7713e0e5055 Mon Sep 17 00:00:00 2001
From: Joel A Fernandes <joelagnel@ti.com>
Date: Sat, 22 Oct 2011 12:56:44 -0500
Subject: [PATCH 2/3] at24: Add ability to dynamically reconfigure chip information
As some EEPROMs are used for board name detection, it is not possible to detect
in advance which EEPROM type is connected without detecting the board first.
In board-a335xevm.c, we use a trial and error approach and this requires for us
to reconfigure the driver with a new 'eeprom_info' structure different from any
earlier ones that were passed.
We add new accessor functions to the at24 driver to help with this.
Signed-off-by: Joel A Fernandes <joelagnel@ti.com>
---
drivers/misc/eeprom/at24.c | 11 +++++++++++
include/linux/i2c/at24.h | 3 +++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c
index ab1ad41..41ebc1f 100644
--- a/drivers/misc/eeprom/at24.c
+++ b/drivers/misc/eeprom/at24.c
@@ -456,6 +456,17 @@ static ssize_t at24_macc_write(struct memory_accessor *macc, const char *buf,
return at24_write(at24, buf, offset, count);
}
+struct at24_platform_data *at24_macc_getpdata(struct memory_accessor *macc)
+{
+ struct at24_data *at24 = container_of(macc, struct at24_data, macc);
+ return &at24->chip;
+}
+
+void at24_macc_setpdata(struct memory_accessor *macc, struct at24_platform_data *chip)
+{
+ struct at24_data *at24 = container_of(macc, struct at24_data, macc);
+ at24->chip = *chip;
+}
/*-------------------------------------------------------------------------*/
#ifdef CONFIG_OF
diff --git a/include/linux/i2c/at24.h b/include/linux/i2c/at24.h
index 8ace930..7872912 100644
--- a/include/linux/i2c/at24.h
+++ b/include/linux/i2c/at24.h
@@ -29,4 +29,7 @@ struct at24_platform_data {
void *context;
};
+struct at24_platform_data *at24_macc_getpdata(struct memory_accessor *macc);
+void at24_macc_setpdata(struct memory_accessor *macc, struct at24_platform_data *chip);
+
#endif /* _LINUX_AT24_H */
--
1.7.4.1
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