/*
* linux/arch/arm/mach-omap2/gpmc-smsc911x.c
*
* Copyright (C) 2009 Li-Pro.Net
* Stephan Linz <linz@li-pro.net>
*
* Modified from linux/arch/arm/mach-omap2/gpmc-smc91x.c
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/smsc911x.h>
#include <plat/board.h>
#include <plat/gpmc.h>
#include <plat/gpmc-smsc911x.h>
static struct omap_smsc911x_platform_data *gpmc_cfg;
static struct resource gpmc_smsc911x_resources[] = {
[0] = {
.flags = IORESOURCE_MEM,
},
[1] = {
.flags = IORESOURCE_IRQ,
},
};
static struct smsc911x_platform_config gpmc_smsc911x_config = {
.phy_interface = PHY_INTERFACE_MODE_MII,
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
.flags = SMSC911X_USE_16BIT,
};
static struct platform_device gpmc_smsc911x_device = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(gpmc_smsc911x_resources),
.resource = gpmc_smsc911x_resources,
.dev = {
.platform_data = &gpmc_smsc911x_config,
},
};
/*
* Initialize smsc911x device connected to the GPMC. Note that we
* assume that pin multiplexing is done in the board-*.c file,
* or in the bootloader.
*/
void __init gpmc_smsc911x_init(struct omap_smsc911x_platform_data *board_data)
{
unsigned long cs_mem_base;
int ret;
gpmc_cfg = board_data;
if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
printk(KERN_ERR "Failed to request GPMC mem for smsc911x\n");
return;
}
gpmc_smsc911x_resources[0].start = cs_mem_base + 0x0;
gpmc_smsc911x_resources[0].end = cs_mem_base + 0xff;
if (gpio_request(gpmc_cfg->gpio_irq, "smsc911x irq") < 0) {
printk(KERN_ERR "Failed to request GPIO%d for smsc911x IRQ\n",
gpmc_cfg->gpio_irq);
goto free1;
}
gpio_direction_input(gpmc_cfg->gpio_irq);
gpmc_smsc911x_resources[1].start = gpio_to_irq(gpmc_cfg->gpio_irq);
gpmc_smsc911x_resources[1].flags |=
(gpmc_cfg->flags & IRQF_TRIGGER_MASK);
if (gpio_is_valid(gpmc_cfg->gpio_reset)) {
ret = gpio_request(gpmc_cfg->gpio_reset, "smsc911x reset");
if (ret) {
printk(KERN_ERR "Failed to request GPIO%d for smsc911x reset\n",
gpmc_cfg->gpio_reset);
goto free2;
}
gpio_direction_output(gpmc_cfg->gpio_reset, 1);
gpio_set_value(gpmc_cfg->gpio_reset, 0);
msleep(100);
gpio_set_value(gpmc_cfg->gpio_reset, 1);
}
if (platform_device_register(&gpmc_smsc911x_device) < 0) {
printk(KERN_ERR "Unable to register smsc911x device\n");
gpio_free(gpmc_cfg->gpio_reset);
goto free2;
}
return;
free2:
gpio_free(gpmc_cfg->gpio_irq);
free1:
gpmc_cs_free(gpmc_cfg->cs);
printk(KERN_ERR "Could not initialize smsc911x\n");
}
