mirror of
https://github.com/torvalds/linux.git
synced 2024-12-29 14:21:47 +00:00
cdd280b995
Introduce of a generic way to setup smsc911x based Ethernet controller connected to GPMC similar to gpmc-smc91x but without timing setup. Signed-off-by: Tim Nordell <tim.nordell@logicpd.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/*
|
|
* 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");
|
|
}
|