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/*
* Board support file for containing WiFi specific details for OMAP4430 SDP.
*
* Copyright (C) 2009 Texas Instruments
*
* Author: Pradeep Gurumath <pradeepgurumath@ti.com>
*
* Based on mach-omap2/board-3430sdp.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.
*/
/* linux/arch/arm/mach-omap2/board-4430sdp-wifi.c
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/mmc/host.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/err.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <plat/wifi_tiwlan.h>
#define SDP4430_WIFI_PMENA_GPIO 54
#define SDP4430_WIFI_IRQ_GPIO 53
static int sdp4430_wifi_cd; /* WIFI virtual 'card detect' status */
static void (*wifi_status_cb)(int card_present, void *dev_id);
static void *wifi_status_cb_devid;
int omap_wifi_status_register(void (*callback)(int card_present,
void *dev_id), void *dev_id)
{
if (wifi_status_cb)
return -EAGAIN;
wifi_status_cb = callback;
wifi_status_cb_devid = dev_id;
return 0;
}
int omap_wifi_status(int irq)
{
return sdp4430_wifi_cd;
}
int sdp4430_wifi_set_carddetect(int val)
{
printk(KERN_WARNING"%s: %d\n", __func__, val);
sdp4430_wifi_cd = val;
if (wifi_status_cb)
wifi_status_cb(val, wifi_status_cb_devid);
else
printk(KERN_WARNING "%s: Nobody to notify\n", __func__);
return 0;
}
#ifndef CONFIG_WIFI_CONTROL_FUNC
EXPORT_SYMBOL(sdp4430_wifi_set_carddetect);
#endif
static int sdp4430_wifi_power_state;
int sdp4430_wifi_power(int on)
{
printk(KERN_WARNING"%s: %d\n", __func__, on);
gpio_set_value(SDP4430_WIFI_PMENA_GPIO, on);
sdp4430_wifi_power_state = on;
return 0;
}
#ifndef CONFIG_WIFI_CONTROL_FUNC
EXPORT_SYMBOL(sdp4430_wifi_power);
#endif
static int sdp4430_wifi_reset_state;
int sdp4430_wifi_reset(int on)
{
printk(KERN_WARNING"%s: %d\n", __func__, on);
sdp4430_wifi_reset_state = on;
return 0;
}
#ifndef CONFIG_WIFI_CONTROL_FUNC
EXPORT_SYMBOL(sdp4430_wifi_reset);
#endif
struct wifi_platform_data sdp4430_wifi_control = {
.set_power = sdp4430_wifi_power,
.set_reset = sdp4430_wifi_reset,
.set_carddetect = sdp4430_wifi_set_carddetect,
};
#ifdef CONFIG_WIFI_CONTROL_FUNC
static struct resource sdp4430_wifi_resources[] = {
[0] = {
.name = "device_wifi_irq",
.start = OMAP_GPIO_IRQ(SDP4430_WIFI_IRQ_GPIO),
.end = OMAP_GPIO_IRQ(SDP4430_WIFI_IRQ_GPIO),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
},
};
static struct platform_device sdp4430_wifi_device = {
.name = "device_wifi",
.id = 1,
.num_resources = ARRAY_SIZE(sdp4430_wifi_resources),
.resource = sdp4430_wifi_resources,
.dev = {
.platform_data = &sdp4430_wifi_control,
},
};
#endif
static int __init sdp4430_wifi_init(void)
{
int ret;
printk(KERN_WARNING"%s: start\n", __func__);
ret = gpio_request(SDP4430_WIFI_IRQ_GPIO, "wifi_irq");
if (ret < 0) {
printk(KERN_ERR "%s: can't reserve GPIO: %d\n", __func__,
SDP4430_WIFI_IRQ_GPIO);
goto out;
}
gpio_direction_input(SDP4430_WIFI_IRQ_GPIO);
#ifdef CONFIG_WIFI_CONTROL_FUNC
ret = platform_device_register(&sdp4430_wifi_device);
#endif
out:
return ret;
}
device_initcall(sdp4430_wifi_init);
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