arm: tegra: kai: add support for bluetooth and wifi

1) Enable TEGRA_GPIO_PU0 for Bluetooth
2) Add platform device wl128x_device and btwilink_device for Bluetooth
3) Set platform data kai_wlan_data for WiFi

Bug 926128
Reviewed-on: http://git-master/r/75929

Change-Id: I3bbe48899358106a299728e924e5a893f68ac60c
Signed-off-by: Om Prakash Singh <omp@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Reviewed-on: http://git-master/r/78437
Reviewed-by: Automatic_Commit_Validation_User

1 files changed, 117 insertions, 1 deletions

diff --git a/arch/arm/mach-tegra/board-kai-sdhci.c b/arch/arm/mach-tegra/board-kai-sdhci.c
index 99f7736b14e7..7f320fab1011 100644
--- a/arch/arm/mach-tegra/board-kai-sdhci.c
+++ b/arch/arm/mach-tegra/board-kai-sdhci.c
@@ -22,6 +22,8 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/mmc/host.h>
+#include <linux/wl12xx.h>
+#include <linux/regulator/consumer.h>
 
 #include <asm/mach-types.h>
 #include <mach/irqs.h>
@@ -33,6 +35,30 @@
 #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_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 regulator *vdd_com = NULL;
+
+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,
+};
 
 static struct resource sdhci_resource0[] = {
 	[0] = {
@@ -73,9 +99,26 @@ static struct resource sdhci_resource3[] = {
 	},
 };
 
+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 = {
-		.built_in = 1,
+		.register_status_notify	= kai_wifi_status_register,
+		/* .embedded_sdio = &embedded_sdio_data2, */
+		.built_in = 0,
 	},
 	.cd_gpio = -1,
 	.wp_gpio = -1,
@@ -88,6 +131,7 @@ static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
 	.vdd_min_uv = -1,
 	.max_clk = 0,
 	.is_8bit_supported = false, */
+	/* .max_clk = 25000000, */
 };
 
 static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
@@ -153,11 +197,83 @@ static struct platform_device tegra_sdhci_device3 = {
 	},
 };
 
+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;
+}
+EXPORT_SYMBOL(kai_wifi_set_carddetect);
+
+int kai_wifi_power(int power_on)
+{
+	pr_err("Powering %s wifi\n", (power_on ? "on" : "off"));
+
+	if (vdd_com == NULL) {
+		vdd_com = regulator_get(NULL, "vdd_com_bd");
+		if (WARN_ON(IS_ERR(vdd_com))) {
+			pr_err("%s: couldn't get regulator vdd_com: %ld\n",
+				__func__, PTR_ERR(vdd_com));
+			return -ENODEV;
+		}
+	}
+
+	if (power_on) {
+		regulator_enable(vdd_com);
+		mdelay(100);
+		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);
+		regulator_disable(vdd_com);
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(kai_wifi_power);
+
+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;
 }