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/*
* arch/arm/mach-tegra/board-enterprise-sdhci.c
*
* Copyright (C) 2011 NVIDIA Corporation.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
*/
#include <linux/resource.h>
#include <linux/platform_device.h>
#include <linux/wlan_plat.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mmc/host.h>
#include <asm/mach-types.h>
#include <mach/irqs.h>
#include <mach/iomap.h>
#include <mach/sdhci.h>
#include "gpio-names.h"
#include "board.h"
#define ENTERPRISE_WLAN_PWR TEGRA_GPIO_PD4
#define ENTERPRISE_WLAN_RST TEGRA_GPIO_PD3
#define ENTERPRISE_SD_CD TEGRA_GPIO_PI5
static void (*wifi_status_cb)(int card_present, void *dev_id);
static void *wifi_status_cb_devid;
static int enterprise_wifi_status_register(void (*callback)(int , void *), void *);
static int enterprise_wifi_reset(int on);
static int enterprise_wifi_power(int on);
static int enterprise_wifi_set_carddetect(int val);
static struct wifi_platform_data enterprise_wifi_control = {
.set_power = enterprise_wifi_power,
.set_reset = enterprise_wifi_reset,
.set_carddetect = enterprise_wifi_set_carddetect,
};
static struct platform_device enterprise_wifi_device = {
.name = "bcm4329_wlan",
.id = 1,
.dev = {
.platform_data = &enterprise_wifi_control,
},
};
static struct resource sdhci_resource0[] = {
[0] = {
.start = INT_SDMMC1,
.end = INT_SDMMC1,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = TEGRA_SDMMC1_BASE,
.end = TEGRA_SDMMC1_BASE + TEGRA_SDMMC1_SIZE-1,
.flags = IORESOURCE_MEM,
},
};
static struct resource sdhci_resource2[] = {
[0] = {
.start = INT_SDMMC3,
.end = INT_SDMMC3,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = TEGRA_SDMMC3_BASE,
.end = TEGRA_SDMMC3_BASE + TEGRA_SDMMC3_SIZE-1,
.flags = IORESOURCE_MEM,
},
};
static struct resource sdhci_resource3[] = {
[0] = {
.start = INT_SDMMC4,
.end = INT_SDMMC4,
.flags = IORESOURCE_IRQ,
},
[1] = {
.start = TEGRA_SDMMC4_BASE,
.end = TEGRA_SDMMC4_BASE + TEGRA_SDMMC4_SIZE-1,
.flags = IORESOURCE_MEM,
},
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
.clk_id = NULL,
.force_hs = 0,
.register_status_notify = enterprise_wifi_status_register,
.cccr = {
.sdio_vsn = 2,
.multi_block = 1,
.low_speed = 0,
.wide_bus = 0,
.high_power = 1,
.high_speed = 1,
},
.cis = {
.vendor = 0x02d0,
.device = 0x4329,
},
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = -1,
.tap_delay = 6,
.is_voltage_switch_supported = false,
.vsd_name = NULL,
.vsd_slot_name = NULL,
.max_clk = 48000000,
.is_8bit_supported = false,
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = -1,
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data3 = {
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = -1,
.is_8bit = 1,
};
static struct platform_device tegra_sdhci_device0 = {
.name = "sdhci-tegra",
.id = 2,
.resource = sdhci_resource0,
.num_resources = ARRAY_SIZE(sdhci_resource0),
.dev = {
.platform_data = &tegra_sdhci_platform_data0,
},
};
static struct platform_device tegra_sdhci_device2 = {
.name = "sdhci-tegra",
.id = 2,
.resource = sdhci_resource2,
.num_resources = ARRAY_SIZE(sdhci_resource2),
.dev = {
.platform_data = &tegra_sdhci_platform_data2,
},
};
static struct platform_device tegra_sdhci_device3 = {
.name = "sdhci-tegra",
.id = 3,
.resource = sdhci_resource3,
.num_resources = ARRAY_SIZE(sdhci_resource3),
.dev = {
.platform_data = &tegra_sdhci_platform_data3,
},
};
static int enterprise_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;
}
static int enterprise_wifi_set_carddetect(int val)
{
pr_debug("%s: %d\n", __func__, val);
if (wifi_status_cb)
wifi_status_cb(val, wifi_status_cb_devid);
else
pr_warning("%s: Nobody to notify\n", __func__);
return 0;
}
static int enterprise_wifi_power(int on)
{
pr_debug("%s: %d\n", __func__, on);
gpio_set_value(ENTERPRISE_WLAN_PWR, on);
mdelay(100);
gpio_set_value(ENTERPRISE_WLAN_RST, on);
mdelay(200);
return 0;
}
static int enterprise_wifi_reset(int on)
{
pr_debug("%s: do nothing\n", __func__);
return 0;
}
static int __init enterprise_wifi_init(void)
{
int rc;
rc = gpio_request(ENTERPRISE_WLAN_PWR, "wlan_power");
if (rc)
pr_err("WLAN_PWR gpio request failed:%d\n", rc);
rc = gpio_request(ENTERPRISE_WLAN_RST, "wlan_rst");
if (rc)
pr_err("WLAN_RST gpio request failed:%d\n", rc);
tegra_gpio_enable(ENTERPRISE_WLAN_PWR);
tegra_gpio_enable(ENTERPRISE_WLAN_RST);
rc = gpio_direction_output(ENTERPRISE_WLAN_PWR, 0);
if (rc)
pr_err("WLAN_PWR gpio direction configuration failed:%d\n", rc);
gpio_direction_output(ENTERPRISE_WLAN_RST, 0);
if (rc)
pr_err("WLAN_RST gpio direction configuration failed:%d\n", rc);
platform_device_register(&enterprise_wifi_device);
return 0;
}
int __init enterprise_sdhci_init(void)
{
platform_device_register(&tegra_sdhci_device3);
platform_device_register(&tegra_sdhci_device0);
tegra_gpio_enable(ENTERPRISE_SD_CD);
tegra_sdhci_platform_data2.cd_gpio = ENTERPRISE_SD_CD;
platform_device_register(&tegra_sdhci_device2);
enterprise_wifi_init();
return 0;
}
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