[PATCH v2 08/25] ARM: davinci: dm850-evm: use cell nvmem lookup for mac address

Bartosz Golaszewski
2018-11-13T14:05:00Z

We now support nvmem lookups and cell definitions for machine code.
Add relevant data structures for the mac-address stored in at24 EEPROM.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
arch/arm/mach-davinci/board-da850-evm.c | 29 +++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index e1a949b47306..bac2162e2153 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -28,6 +28,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/rawnand.h>
#include <linux/mtd/partitions.h>
+#include <linux/nvmem-provider.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/platform_data/gpio-davinci.h>
@@ -100,6 +101,31 @@ static struct mtd_partition da850evm_spiflash_part[] = {
},
};

+static struct nvmem_cell_info da850evm_nvmem_cells[] = {
+ {
+ .name = "macaddr",
+ .offset = 0x0,
+ .bytes = ETH_ALEN,
+ }
+};
+
+static struct nvmem_cell_table da850evm_nvmem_cell_table = {
+ /*
+ * The nvmem name differs from the partition name because of the
+ * internal works of the nvmem framework.
+ */
+ .nvmem_name = "MAC-Address0",
+ .cells = da850evm_nvmem_cells,
+ .ncells = ARRAY_SIZE(da850evm_nvmem_cells),
+};
+
+static struct nvmem_cell_lookup da850evm_nvmem_cell_lookup = {
+ .nvmem_name = "MAC-Address0",
+ .cell_name = "macaddr",
+ .dev_id = "davinci_emac.1",
+ .con_id = "mac-address",
+};
+
static struct flash_platform_data da850evm_spiflash_data = {
.name = "m25p80",
.parts = da850evm_spiflash_part,
@@ -1395,6 +1421,9 @@ static __init void da850_evm_init(void)

davinci_serial_init(da8xx_serial_device);

+ nvmem_add_cell_table(&da850evm_nvmem_cell_table);
+ nvmem_add_cell_lookups(&da850evm_nvmem_cell_lookup, 1);
+
i2c_register_board_info(1, da850_evm_i2c_devices,
ARRAY_SIZE(da850_evm_i2c_devices));

--
2.19.1