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/*
* arch/arm/mach-tegra/board-harmony-sdhci.c
*
* Copyright (C) 2010 Google, Inc.
*
* 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 VENTANA_WLAN_PWR TEGRA_GPIO_PK5
#define VENTANA_WLAN_RST TEGRA_GPIO_PK6
static void (*wifi_status_cb)(int card_present, void *dev_id);
static void *wifi_status_cb_devid;
static int ventana_wifi_status_register(void (*callback)(int , void *), void *);
static struct clk *wifi_32k_clk;
static int ventana_wifi_reset(int on);
static int ventana_wifi_power(int on);
static int ventana_wifi_set_carddetect(int val);
static struct wifi_platform_data ventana_wifi_control = {
.set_power = ventana_wifi_power,
.set_reset = ventana_wifi_reset,
.set_carddetect = ventana_wifi_set_carddetect,
};
static struct platform_device ventana_wifi_device = {
.name = "bcm4329_wlan",
.id = 1,
.dev = {
.platform_data = &ventana_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 = ventana_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,
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
.clk_id = NULL,
.force_hs = 1,
.cd_gpio = TEGRA_GPIO_PI5,
.wp_gpio = TEGRA_GPIO_PH1,
.power_gpio = TEGRA_GPIO_PT3,
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data3 = {
.clk_id = NULL,
.force_hs = 0,
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = TEGRA_GPIO_PI6,
};
static struct platform_device tegra_sdhci_device0 = {
.name = "sdhci-tegra",
.id = 0,
.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 ventana_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 ventana_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 ventana_wifi_power(int on)
{
pr_debug("%s: %d\n", __func__, on);
gpio_set_value(VENTANA_WLAN_PWR, on);
mdelay(100);
gpio_set_value(VENTANA_WLAN_RST, on);
mdelay(200);
if (on)
clk_enable(wifi_32k_clk);
else
clk_disable(wifi_32k_clk);
return 0;
}
static int ventana_wifi_reset(int on)
{
pr_debug("%s: do nothing\n", __func__);
return 0;
}
static int __init ventana_wifi_init(void)
{
wifi_32k_clk = clk_get_sys(NULL, "blink");
if (IS_ERR(wifi_32k_clk)) {
pr_err("%s: unable to get blink clock\n", __func__);
return PTR_ERR(wifi_32k_clk);
}
gpio_request(VENTANA_WLAN_PWR, "wlan_power");
gpio_request(VENTANA_WLAN_RST, "wlan_rst");
tegra_gpio_enable(VENTANA_WLAN_PWR);
tegra_gpio_enable(VENTANA_WLAN_RST);
gpio_direction_output(VENTANA_WLAN_PWR, 0);
gpio_direction_output(VENTANA_WLAN_RST, 0);
platform_device_register(&ventana_wifi_device);
device_init_wakeup(&ventana_wifi_device.dev, 1);
device_set_wakeup_enable(&ventana_wifi_device.dev, 0);
return 0;
}
int __init ventana_sdhci_init(void)
{
gpio_request(tegra_sdhci_platform_data2.power_gpio, "sdhci2_power");
gpio_request(tegra_sdhci_platform_data2.cd_gpio, "sdhci2_cd");
gpio_request(tegra_sdhci_platform_data2.wp_gpio, "sdhci2_wp");
gpio_request(tegra_sdhci_platform_data3.power_gpio, "sdhci3_power");
tegra_gpio_enable(tegra_sdhci_platform_data2.power_gpio);
tegra_gpio_enable(tegra_sdhci_platform_data2.cd_gpio);
tegra_gpio_enable(tegra_sdhci_platform_data2.wp_gpio);
tegra_gpio_enable(tegra_sdhci_platform_data3.power_gpio);
gpio_direction_output(tegra_sdhci_platform_data2.power_gpio, 1);
gpio_direction_output(tegra_sdhci_platform_data3.power_gpio, 1);
gpio_set_value(tegra_sdhci_platform_data3.power_gpio, 1);
platform_device_register(&tegra_sdhci_device3);
platform_device_register(&tegra_sdhci_device2);
platform_device_register(&tegra_sdhci_device0);
ventana_wifi_init();
return 0;
}
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