/*
* arch/arm/mach-tegra/board-kai-sdhci.c
*
* Copyright (C) 2010 Google, Inc.
* Copyright (C) 2012 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/delay.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mmc/host.h>
#include <linux/wl12xx.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"
#include "board-kai.h"
#define KAI_SD_CD TEGRA_GPIO_PI5
#define KAI_WLAN_EN TEGRA_GPIO_PD3
#define KAI_WLAN_IRQ TEGRA_GPIO_PV1
static void (*wifi_status_cb)(int card_present, void *dev_id);
static void *wifi_status_cb_devid;
static int kai_wifi_power(int power_on);
static int kai_wifi_set_carddetect(int val);
static int kai_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 struct wl12xx_platform_data kai_wlan_data __initdata = {
.irq = TEGRA_GPIO_TO_IRQ(KAI_WLAN_IRQ),
.board_ref_clock = WL12XX_REFCLOCK_26,
.board_tcxo_clock = 1,
.set_power = kai_wifi_power,
.set_carddetect = kai_wifi_set_carddetect,
};
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 embedded_sdio_data embedded_sdio_data2 = {
.cccr = {
.sdio_vsn = 2,
.multi_block = 1,
.low_speed = 0,
.wide_bus = 0,
.high_power = 1,
.high_speed = 1,
},
.cis = {
.vendor = 0x0097,
.device = 0x4076,
},
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
.mmc_data = {
.register_status_notify = kai_wifi_status_register,
/* .embedded_sdio = &embedded_sdio_data2, */
.built_in = 1,
},
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = -1,
/* .tap_delay = 6,
.is_voltage_switch_supported = false,
.vdd_rail_name = NULL,
.slot_rail_name = NULL,
.vdd_max_uv = -1,
.vdd_min_uv = -1,
.max_clk = 0,
.is_8bit_supported = false, */
/* .max_clk = 25000000, */
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
.cd_gpio = KAI_SD_CD,
.wp_gpio = -1,
.power_gpio = -1,
/* .tap_delay = 6,
.is_voltage_switch_supported = true,
.vdd_rail_name = "vddio_sdmmc1",
.slot_rail_name = "vddio_sd_slot",
.vdd_max_uv = 3320000,
.vdd_min_uv = 3280000,
.max_clk = 208000000,
.is_8bit_supported = false, */
};
static struct tegra_sdhci_platform_data tegra_sdhci_platform_data3 = {
.cd_gpio = -1,
.wp_gpio = -1,
.power_gpio = -1,
.is_8bit = 1,
.tap_delay = 0x0F,
.mmc_data = {
.built_in = 1,
}
/* .tap_delay = 6,
.is_voltage_switch_supported = false,
.vdd_rail_name = NULL,
.slot_rail_name = NULL,
.vdd_max_uv = -1,
.vdd_min_uv = -1,
.max_clk = 48000000,
.is_8bit_supported = true, */
};
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 kai_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 kai_wifi_power(int power_on)
{
pr_err("Powering %s wifi\n", (power_on ? "on" : "off"));
if (power_on) {
gpio_set_value(KAI_WLAN_EN, 1);
mdelay(15);
gpio_set_value(KAI_WLAN_EN, 0);
mdelay(1);
gpio_set_value(KAI_WLAN_EN, 1);
mdelay(70);
} else {
gpio_set_value(KAI_WLAN_EN, 0);
}
return 0;
}
static int __init kai_wifi_init(void)
{
int rc;
rc = gpio_request(KAI_WLAN_EN, "wl12xx");
if (rc)
pr_err("WLAN_EN gpio request failed:%d\n", rc);
rc = gpio_request(KAI_WLAN_IRQ, "wl12xx");
if (rc)
pr_err("WLAN_IRQ gpio request failed:%d\n", rc);
tegra_gpio_enable(KAI_WLAN_EN);
tegra_gpio_enable(KAI_WLAN_IRQ);
rc = gpio_direction_output(KAI_WLAN_EN, 0);
if (rc)
pr_err("WLAN_EN gpio direction configuration failed:%d\n", rc);
rc = gpio_direction_input(KAI_WLAN_IRQ);
if (rc)
pr_err("WLAN_IRQ gpio direction configuration failed:%d\n", rc);
if (wl12xx_set_platform_data(&kai_wlan_data))
pr_err("Error setting wl12xx data\n");
return 0;
}
int __init kai_sdhci_init(void)
{
platform_device_register(&tegra_sdhci_device3);
platform_device_register(&tegra_sdhci_device2);
platform_device_register(&tegra_sdhci_device0);
kai_wifi_init();
return 0;
}
