Add new BSP submodule for Atmel Processors.5.3.0b5.3.0a

1 files changed, 114 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-3.12.70/mtrv1/linux-3.12-eeprom-setup-mtr.patch b/recipes-kernel/linux/linux-3.12.70/mtrv1/linux-3.12-eeprom-setup-mtr.patch
new file mode 100644
index 0000000..9c77e7f
--- /dev/null
+++ b/recipes-kernel/linux/linux-3.12.70/mtrv1/linux-3.12-eeprom-setup-mtr.patch
@@ -0,0 +1,114 @@
+Index: linux-3.12.27/arch/arm/mach-at91/board-dt-sam9.c
+===================================================================
+--- linux-3.12.27.orig/arch/arm/mach-at91/board-dt-sam9.c	2014-08-26 07:12:26.000000000 -0500
++++ linux-3.12.27/arch/arm/mach-at91/board-dt-sam9.c	2014-09-24 09:56:17.283867487 -0500
+@@ -25,6 +25,36 @@
+ #include "board.h"
+ #include "generic.h"
+ 
++#include <linux/mts_at24.h>
++
++uint8_t mts_id_eeprom[512];
++
++EXPORT_SYMBOL(mts_id_eeprom);
++
++static void mts_id_eeprom_load(struct memory_accessor *macc, void *context)
++{
++	int tmp;
++
++	memset(mts_id_eeprom, 0, sizeof(mts_id_eeprom));
++
++	tmp = macc->read(macc, mts_id_eeprom, 0, sizeof(mts_id_eeprom));
++	if (tmp != sizeof(mts_id_eeprom)) {
++		printk(KERN_ERR "sam9x5: id eeprom read failed: %d\n", tmp);
++	} else {
++		printk(KERN_INFO "sam9x5: read %d bytes from id eeprom\n", tmp);
++	}
++}
++
++struct mts_eeprom_callback id_eeprom_callback = {
++	.address = 0x56,
++	.index = -1,
++	.setup = mts_id_eeprom_load,
++};
++
++struct mts_eeprom_callback* mts_eeprom_callback_lookup[] = {
++	&id_eeprom_callback,
++	NULL
++};
+ 
+ static const struct of_device_id irq_of_match[] __initconst = {
+ 
+Index: linux-3.12.27/drivers/misc/eeprom/at24.c
+===================================================================
+--- linux-3.12.27.orig/drivers/misc/eeprom/at24.c	2014-08-26 07:12:26.000000000 -0500
++++ linux-3.12.27/drivers/misc/eeprom/at24.c	2014-09-23 11:41:52.470331651 -0500
+@@ -24,6 +24,8 @@
+ #include <linux/i2c.h>
+ #include <linux/i2c/at24.h>
+ 
++#include <linux/mts_at24.h>
++
+ /*
+  * I2C EEPROMs from most vendors are inexpensive and mostly interchangeable.
+  * Differences between different vendor product lines (like Atmel AT24C or
+@@ -473,6 +475,23 @@
+ 			chip->page_size = be32_to_cpup(val);
+ 	}
+ }
++
++static void at24_get_setup(struct i2c_client *client,
++		struct at24_platform_data *chip)
++{
++	int i;
++
++	for (i = 0; mts_eeprom_callback_lookup[i] != NULL; i++) {
++		if (mts_eeprom_callback_lookup[i]->address == client->addr) {
++			printk(KERN_INFO "%s: found a match for eeprom at %X\n", __func__, client->addr);
++			chip->setup = mts_eeprom_callback_lookup[i]->setup;
++			if (mts_eeprom_callback_lookup[i]->index > -1) {
++				chip->context = (void*)&mts_eeprom_callback_lookup[i]->index;
++			}
++			break;
++		}
++	}
++}
+ #else
+ static void at24_get_ofdata(struct i2c_client *client,
+ 		struct at24_platform_data *chip)
+@@ -505,12 +524,14 @@
+ 		 * is recommended anyhow.
+ 		 */
+ 		chip.page_size = 1;
++		chip.setup = NULL;
++		chip.context = NULL;
+ 
+ 		/* update chipdata if OF is present */
+ 		at24_get_ofdata(client, &chip);
+ 
+-		chip.setup = NULL;
+-		chip.context = NULL;
++		/* see if we have a setup callback */
++		at24_get_setup(client, &chip);
+ 	}
+ 
+ 	if (!is_power_of_2(chip.byte_len))
+Index: linux-3.12.27/include/linux/mts_at24.h
+===================================================================
+--- /dev/null	1970-01-01 00:00:00.000000000 +0000
++++ linux-3.12.27/include/linux/mts_at24.h	2014-09-23 11:41:52.470331651 -0500
+@@ -0,0 +1,14 @@
++#ifndef _LINUX_MTSAT24_H
++#define _LINUX_MTSAT24_H
++
++#include <linux/memory.h>
++
++struct mts_eeprom_callback {
++    unsigned short      address;
++    int         index;
++    void		(*setup)(struct memory_accessor *, void *context);
++};
++
++extern struct mts_eeprom_callback* mts_eeprom_callback_lookup[];
++
++#endif /* _LINUX_MTSAT24_H */