1/* 2 * linux/arch/arm/mach-omap2/gpmc-smsc911x.c 3 * 4 * Copyright (C) 2009 Li-Pro.Net 5 * Stephan Linz <linz@li-pro.net> 6 * 7 * Modified from linux/arch/arm/mach-omap2/gpmc-smc91x.c 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License version 2 as 11 * published by the Free Software Foundation. 12 */ 13#define pr_fmt(fmt) "%s: " fmt, __func__ 14 15#include <linux/kernel.h> 16#include <linux/platform_device.h> 17#include <linux/gpio.h> 18#include <linux/delay.h> 19#include <linux/interrupt.h> 20#include <linux/io.h> 21#include <linux/smsc911x.h> 22 23#include <plat/board.h> 24#include <plat/gpmc.h> 25#include <plat/gpmc-smsc911x.h> 26 27static struct resource gpmc_smsc911x_resources[] = { 28 [0] = { 29 .flags = IORESOURCE_MEM, 30 }, 31 [1] = { 32 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL, 33 }, 34}; 35 36static struct smsc911x_platform_config gpmc_smsc911x_config = { 37 .phy_interface = PHY_INTERFACE_MODE_MII, 38 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, 39 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, 40}; 41 42/* 43 * Initialize smsc911x device connected to the GPMC. Note that we 44 * assume that pin multiplexing is done in the board-*.c file, 45 * or in the bootloader. 46 */ 47void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *gpmc_cfg) 48{ 49 struct platform_device *pdev; 50 unsigned long cs_mem_base; 51 int ret; 52 53 if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) { 54 pr_err("Failed to request GPMC mem region\n"); 55 return; 56 } 57 58 gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0; 59 gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff; 60 61 if (gpio_request_one(gpmc_cfg->gpio_irq, GPIOF_IN, "smsc911x irq")) { 62 pr_err("Failed to request IRQ GPIO%d\n", gpmc_cfg->gpio_irq); 63 goto free1; 64 } 65 66 gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq); 67 68 if (gpio_is_valid(gpmc_cfg->gpio_reset)) { 69 ret = gpio_request_one(gpmc_cfg->gpio_reset, 70 GPIOF_OUT_INIT_HIGH, "smsc911x reset"); 71 if (ret) { 72 pr_err("Failed to request reset GPIO%d\n", 73 gpmc_cfg->gpio_reset); 74 goto free2; 75 } 76 77 gpio_set_value(gpmc_cfg->gpio_reset, 0); 78 msleep(100); 79 gpio_set_value(gpmc_cfg->gpio_reset, 1); 80 } 81 82 gpmc_smsc911x_config.flags = gpmc_cfg->flags ? : SMSC911X_USE_16BIT; 83 84 pdev = platform_device_register_resndata(NULL, "smsc911x", gpmc_cfg->id, 85 gpmc_smsc911x_resources, ARRAY_SIZE(gpmc_smsc911x_resources), 86 &gpmc_smsc911x_config, sizeof(gpmc_smsc911x_config)); 87 if (!pdev) { 88 pr_err("Unable to register platform device\n"); 89 gpio_free(gpmc_cfg->gpio_reset); 90 goto free2; 91 } 92 93 return; 94 95free2: 96 gpio_free(gpmc_cfg->gpio_irq); 97free1: 98 gpmc_cs_free(gpmc_cfg->cs); 99 100 pr_err("Could not initialize smsc911x device\n"); 101} 102