1 files changed, 267 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-kai-sdhci.c b/arch/arm/mach-tegra/board-kai-sdhci.c
new file mode 100644
index 00000000000..3e489927108
--- /dev/null
+++ b/arch/arm/mach-tegra/board-kai-sdhci.c
@@ -0,0 +1,267 @@
+/*
+ * 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;
+}