davinci: MityDSP-L138/MityARM-1808 read MAC address from I2C Prom (2a7dae04) · Commits · 戴 / test

arch/arm/mach-davinci/board-mityomapl138.c

+62 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,8 @@
		#include <linux/mtd/partitions.h>
		#include <linux/regulator/machine.h>
		#include <linux/i2c.h>
		#include <linux/i2c/at24.h>
		#include <linux/etherdevice.h>

		#include <asm/mach-types.h>
		#include <asm/mach/arch.h>
		@@ -25,6 +27,65 @@
		#include <mach/mux.h>

		#define MITYOMAPL138_PHY_ID "0:03"

		#define FACTORY_CONFIG_MAGIC 0x012C0138
		#define FACTORY_CONFIG_VERSION 0x00010001

		/* Data Held in On-Board I2C device */
		struct factory_config {
		u32 magic;
		u32 version;
		u8 mac[6];
		u32 fpga_type;
		u32 spare;
		u32 serialnumber;
		char partnum[32];
		};

		static struct factory_config factory_config;

		static void read_factory_config(struct memory_accessor a, void context)
		{
		int ret;
		struct davinci_soc_info *soc_info = &davinci_soc_info;

		ret = a->read(a, (char *)&factory_config, 0, sizeof(factory_config));
		if (ret != sizeof(struct factory_config)) {
		pr_warning("MityOMAPL138: Read Factory Config Failed: %d\n",
		ret);
		return;
		}

		if (factory_config.magic != FACTORY_CONFIG_MAGIC) {
		pr_warning("MityOMAPL138: Factory Config Magic Wrong (%X)\n",
		factory_config.magic);
		return;
		}

		if (factory_config.version != FACTORY_CONFIG_VERSION) {
		pr_warning("MityOMAPL138: Factory Config Version Wrong (%X)\n",
		factory_config.version);
		return;
		}

		pr_info("MityOMAPL138: Found MAC = %pM\n", factory_config.mac);
		pr_info("MityOMAPL138: Part Number = %s\n", factory_config.partnum);
		if (is_valid_ether_addr(factory_config.mac))
		memcpy(soc_info->emac_pdata->mac_addr,
		factory_config.mac, ETH_ALEN);
		else
		pr_warning("MityOMAPL138: Invalid MAC found "
		"in factory config block\n");
		}

		static struct at24_platform_data mityomapl138_fd_chip = {
		.byte_len = 256,
		.page_size = 8,
		.flags = AT24_FLAG_READONLY \| AT24_FLAG_IRUGO,
		.setup = read_factory_config,
		.context = NULL,
		};

		static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {
		.bus_freq = 100, /* kHz */
		.bus_delay = 0, /* usec */
		@@ -151,6 +212,7 @@ static struct i2c_board_info __initdata mityomap_tps65023_info[] = {
		},
		{
		I2C_BOARD_INFO("24c02", 0x50),
		.platform_data = &mityomapl138_fd_chip,
		},
		};

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