misc: at24: replace memory_accessor with nvmem_device_read

Now that the AT24 uses the NVMEM framework, replace the
memory_accessor in the setup() callback with nvmem API calls.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 7 insertions, 18 deletions

diff --git a/include/linux/davinci_emac.h b/include/linux/davinci_emac.h
index 542888504994..05b97144d342 100644
--- a/include/linux/davinci_emac.h
+++ b/include/linux/davinci_emac.h
@@ -12,7 +12,7 @@
 #define _LINUX_DAVINCI_EMAC_H
 
 #include <linux/if_ether.h>
-#include <linux/memory.h>
+#include <linux/nvmem-consumer.h>
 
 struct mdio_platform_data {
 	unsigned long		bus_freq;
@@ -46,5 +46,5 @@ enum {
 	EMAC_VERSION_2,	/* DM646x */
 };
 
-void davinci_get_mac_addr(struct memory_accessor *mem_acc, void *context);
+void davinci_get_mac_addr(struct nvmem_device *nvmem, void *context);
 #endif
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 8b8d8d12348e..b723a686fc10 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -137,17 +137,6 @@ extern struct memory_block *find_memory_block(struct mem_section *);
 #endif
 
 /*
- * 'struct memory_accessor' is a generic interface to provide
- * in-kernel access to persistent memory such as i2c or SPI EEPROMs
- */
-struct memory_accessor {
-	ssize_t (*read)(struct memory_accessor *, char *buf, off_t offset,
-			size_t count);
-	ssize_t (*write)(struct memory_accessor *, const char *buf,
-			 off_t offset, size_t count);
-};
-
-/*
  * Kernel text modification mutex, used for code patching. Users of this lock
  * can sleep.
  */
diff --git a/include/linux/platform_data/at24.h b/include/linux/platform_data/at24.h
index c42aa89d34ee..dc9a13e5acda 100644
--- a/include/linux/platform_data/at24.h
+++ b/include/linux/platform_data/at24.h
@@ -9,7 +9,7 @@
 #define _LINUX_AT24_H
 
 #include <linux/types.h>
-#include <linux/memory.h>
+#include <linux/nvmem-consumer.h>
 
 /**
  * struct at24_platform_data - data to set up at24 (generic eeprom) driver
@@ -17,7 +17,7 @@
  * @page_size: number of byte which can be written in one go
  * @flags: tunable options, check AT24_FLAG_* defines
  * @setup: an optional callback invoked after eeprom is probed; enables kernel
-	code to access eeprom via memory_accessor, see example
+	code to access eeprom via nvmem, see example
  * @context: optional parameter passed to setup()
  *
  * If you set up a custom eeprom type, please double-check the parameters.
@@ -26,13 +26,13 @@
  *
  * An example in pseudo code for a setup() callback:
  *
- * void get_mac_addr(struct memory_accessor *mem_acc, void *context)
+ * void get_mac_addr(struct mvmem_device *nvmem, void *context)
  * {
  *	u8 *mac_addr = ethernet_pdata->mac_addr;
  *	off_t offset = context;
  *
  *	// Read MAC addr from EEPROM
- *	if (mem_acc->read(mem_acc, mac_addr, offset, ETH_ALEN) == ETH_ALEN)
+ *	if (nvmem_device_read(nvmem, offset, ETH_ALEN, mac_addr) == ETH_ALEN)
  *		pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr);
  * }
  *
@@ -48,7 +48,7 @@ struct at24_platform_data {
 #define AT24_FLAG_IRUGO		0x20	/* sysfs-entry will be world-readable */
 #define AT24_FLAG_TAKE8ADDR	0x10	/* take always 8 addresses (24c00) */
 
-	void		(*setup)(struct memory_accessor *, void *context);
+	void		(*setup)(struct nvmem_device *nvmem, void *context);
 	void		*context;
 };