ARM: tegra: whistler: enabling wifi for bcm4329

Enabling wifi for whistler by adding bcm platform device and changing
pinmux.

BUG 773541

Original-Change-Id: I3eb812516c8e7964352b400d2b08290ae070b640
Reviewed-on: http://git-master/r/15101
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>

Rebase-Id: R544e15c5a2a1c42297ef98b1b5260d2c01565584

1 files changed, 123 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-whistler-sdhci.c b/arch/arm/mach-tegra/board-whistler-sdhci.c
index 16003f1a6b6b..51d0f41e2530 100644
--- a/arch/arm/mach-tegra/board-whistler-sdhci.c
+++ b/arch/arm/mach-tegra/board-whistler-sdhci.c
@@ -17,8 +17,12 @@
 
 #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>
@@ -28,8 +32,80 @@
 #include "gpio-names.h"
 #include "board.h"
 
+#define WHISTLER_WLAN_PWR	TEGRA_GPIO_PK5
+#define WHISTLER_WLAN_RST	TEGRA_GPIO_PK6
+
 #define WHISTLER_EXT_SDCARD_DETECT	TEGRA_GPIO_PI5
 
+static void (*wifi_status_cb)(int card_present, void *dev_id);
+static void *wifi_status_cb_devid;
+
+static int whistler_wifi_status_register(
+		void (*sdhcicallback)(int card_present, void *dev_id),
+		void *dev_id)
+{
+	if (wifi_status_cb)
+		return -EAGAIN;
+	wifi_status_cb = sdhcicallback;
+	wifi_status_cb_devid = dev_id;
+	return 0;
+}
+
+static int whistler_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 whistler_wifi_power(int on)
+{
+	gpio_set_value(WHISTLER_WLAN_PWR, on);
+	mdelay(100);
+	gpio_set_value(WHISTLER_WLAN_RST, on);
+	mdelay(200);
+
+	return 0;
+}
+
+static int whistler_wifi_reset(int on)
+{
+	pr_debug("%s: do nothing\n", __func__);
+	return 0;
+}
+
+
+static struct wifi_platform_data whistler_wifi_control = {
+	.set_power      = whistler_wifi_power,
+	.set_reset      = whistler_wifi_reset,
+	.set_carddetect = whistler_wifi_set_carddetect,
+};
+
+static struct platform_device whistler_wifi_device = {
+	.name           = "bcm4329_wlan",
+	.id             = 1,
+	.dev            = {
+		.platform_data = &whistler_wifi_control,
+	},
+};
+
+static struct resource sdhci_resource1[] = {
+	[0] = {
+		.start  = INT_SDMMC2,
+		.end    = INT_SDMMC2,
+		.flags  = IORESOURCE_IRQ,
+	},
+	[1] = {
+		.start	= TEGRA_SDMMC2_BASE,
+		.end	= TEGRA_SDMMC2_BASE + TEGRA_SDMMC2_SIZE-1,
+		.flags	= IORESOURCE_MEM,
+	},
+};
+
+
 static struct resource sdhci_resource2[] = {
 	[0] = {
 		.start  = INT_SDMMC3,
@@ -56,6 +132,27 @@ static struct resource sdhci_resource3[] = {
 	},
 };
 
+static struct tegra_sdhci_platform_data tegra_sdhci_platform_data1 = {
+	.clk_id = NULL,
+	.force_hs = 0,
+	.register_status_notify	= whistler_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 = {
 	.cd_gpio = WHISTLER_EXT_SDCARD_DETECT,
 	.wp_gpio = -1,
@@ -68,6 +165,16 @@ static struct tegra_sdhci_platform_data tegra_sdhci_platform_data3 = {
 	.power_gpio = -1,
 };
 
+static struct platform_device tegra_sdhci_device1 = {
+	.name		= "sdhci-tegra",
+	.id		= 1,
+	.resource	= sdhci_resource1,
+	.num_resources	= ARRAY_SIZE(sdhci_resource1),
+	.dev = {
+		.platform_data = &tegra_sdhci_platform_data1,
+	},
+};
+
 static struct platform_device tegra_sdhci_device2 = {
 	.name		= "sdhci-tegra",
 	.id		= 2,
@@ -88,6 +195,20 @@ static struct platform_device tegra_sdhci_device3 = {
 	},
 };
 
+static int __init whistler_wifi_init(void)
+{
+	gpio_request(WHISTLER_WLAN_PWR, "wlan_power");
+	gpio_request(WHISTLER_WLAN_RST, "wlan_rst");
+
+	tegra_gpio_enable(WHISTLER_WLAN_PWR);
+	tegra_gpio_enable(WHISTLER_WLAN_RST);
+
+	gpio_direction_output(WHISTLER_WLAN_PWR, 0);
+	gpio_direction_output(WHISTLER_WLAN_RST, 0);
+
+	platform_device_register(&whistler_wifi_device);
+	return 0;
+}
 int __init whistler_sdhci_init(void)
 {
 	int ret;
@@ -96,6 +217,8 @@ int __init whistler_sdhci_init(void)
 
 	platform_device_register(&tegra_sdhci_device3);
 	platform_device_register(&tegra_sdhci_device2);
+	platform_device_register(&tegra_sdhci_device1);
 
+	whistler_wifi_init();
 	return 0;
 }