linux-kernel - [PATCH v2 03/25] ARM: davinci: dm365-evm: use cell nvmem lookup for mac address

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Message-Id: <20181113140133.17385-4-brgl@bgdev.pl>
Date:   Tue, 13 Nov 2018 15:01:11 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>,
        Russell King <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Boris Brezillon <boris.brezillon@...tlin.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        "David S . Miller" <davem@...emloft.net>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Wolfram Sang <wsa@...-dreams.de>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-i2c@...r.kernel.org, linux-mtd@...ts.infradead.org,
        netdev@...r.kernel.org, linux-omap@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: [PATCH v2 03/25] ARM: davinci: dm365-evm: use cell nvmem lookup for mac address

From: Bartosz Golaszewski <bgolaszewski@...libre.com>

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@...libre.com>
---
 arch/arm/mach-davinci/board-dm365-evm.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm/mach-davinci/board-dm365-evm.c b/arch/arm/mach-davinci/board-dm365-evm.c
index 8143756ff38b..8703fc18dd3b 100644
--- a/arch/arm/mach-davinci/board-dm365-evm.c
+++ b/arch/arm/mach-davinci/board-dm365-evm.c
@@ -24,6 +24,7 @@
 #include <linux/mtd/partitions.h>
 #include <linux/slab.h>
 #include <linux/mtd/rawnand.h>
+#include <linux/nvmem-provider.h>
 #include <linux/input.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/eeprom.h>
@@ -203,6 +204,27 @@ static struct platform_device davinci_aemif_device = {
 	.num_resources		= ARRAY_SIZE(davinci_aemif_resources),
 };
 
+static struct nvmem_cell_info davinci_nvmem_cells[] = {
+	{
+		.name		= "macaddr",
+		.offset		= 0x7f00,
+		.bytes		= ETH_ALEN,
+	}
+};
+
+static struct nvmem_cell_table davinci_nvmem_cell_table = {
+	.nvmem_name	= "1-00500",
+	.cells		= davinci_nvmem_cells,
+	.ncells		= ARRAY_SIZE(davinci_nvmem_cells),
+};
+
+static struct nvmem_cell_lookup davinci_nvmem_cell_lookup = {
+	.nvmem_name	= "1-00500",
+	.cell_name	= "macaddr",
+	.dev_id		= "davinci_emac.1",
+	.con_id		= "mac-address",
+};
+
 static struct at24_platform_data eeprom_info = {
 	.byte_len       = (256*1024) / 8,
 	.page_size      = 64,
@@ -781,6 +803,9 @@ static __init void dm365_evm_init(void)
 	if (ret)
 		pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
 
+	nvmem_add_cell_table(&davinci_nvmem_cell_table);
+	nvmem_add_cell_lookups(&davinci_nvmem_cell_lookup, 1);
+
 	evm_init_i2c();
 	davinci_serial_init(dm365_serial_device);
 
-- 
2.19.1