arm: tegra: cardhu: enabling wifi

adding platform device for wifi

Original-Change-Id: I14a3f26098fd1c246a53e863ddab9a42efceb23d
Reviewed-on: http://git-master/r/16914
Reviewed-by: Rakesh Goyal <rgoyal@nvidia.com>
Tested-by: Rakesh Goyal <rgoyal@nvidia.com>
Reviewed-by: Rakesh Kumar <krakesh@nvidia.com>
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
Original-Change-Id: I22aeeef067eac9acac1383e6e472db93b1647c85

Rebase-Id: Redb775e37b73d27e16623de3cf00b0165dd1bcf0

1 files changed, 95 insertions, 2 deletions

diff --git a/arch/arm/mach-tegra/board-cardhu-sdhci.c b/arch/arm/mach-tegra/board-cardhu-sdhci.c
index fc1af6e67e35..5e205fda45a0 100644
--- a/arch/arm/mach-tegra/board-cardhu-sdhci.c
+++ b/arch/arm/mach-tegra/board-cardhu-sdhci.c
@@ -17,6 +17,7 @@
 
 #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>
@@ -32,10 +33,34 @@
 #include "board.h"
 #include "board-cardhu.h"
 
+#define CARDHU_WLAN_PWR	TEGRA_GPIO_PD4
+#define CARDHU_WLAN_RST	TEGRA_GPIO_PD3
 #define CARDHU_SD_CD TEGRA_GPIO_PI5
 #define CARDHU_SD_WP TEGRA_GPIO_PT3
 #define PM269_SD_WP -1
 
+static void (*wifi_status_cb)(int card_present, void *dev_id);
+static void *wifi_status_cb_devid;
+static int cardhu_wifi_status_register(void (*callback)(int , void *), void *);
+
+static int cardhu_wifi_reset(int on);
+static int cardhu_wifi_power(int on);
+static int cardhu_wifi_set_carddetect(int val);
+
+static struct wifi_platform_data cardhu_wifi_control = {
+	.set_power      = cardhu_wifi_power,
+	.set_reset      = cardhu_wifi_reset,
+	.set_carddetect = cardhu_wifi_set_carddetect,
+};
+
+static struct platform_device cardhu_wifi_device = {
+	.name           = "bcm4329_wlan",
+	.id             = 1,
+	.dev            = {
+		.platform_data = &cardhu_wifi_control,
+	},
+};
+
 static struct resource sdhci_resource0[] = {
 	[0] = {
 		.start  = INT_SDMMC1,
@@ -76,7 +101,20 @@ static struct resource sdhci_resource3[] = {
 };
 
 
-static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
+static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
+	.register_status_notify	= cardhu_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,
@@ -90,7 +128,7 @@ static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
 	.is_8bit_supported = false, */
 };
 
-static struct tegra_sdhci_platform_data tegra_sdhci_platform_data2 = {
+static struct tegra_sdhci_platform_data tegra_sdhci_platform_data0 = {
 	.cd_gpio = -1,
 	.wp_gpio = -1,
 	.power_gpio = -1,
@@ -212,6 +250,60 @@ static int pm269_sd_wp_gpio_init(void)
 	return 0;
 }
 
+static int cardhu_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 cardhu_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 cardhu_wifi_power(int on)
+{
+	pr_debug("%s: %d\n", __func__, on);
+	gpio_set_value(CARDHU_WLAN_PWR, on);
+	mdelay(100);
+	gpio_set_value(CARDHU_WLAN_RST, on);
+	mdelay(200);
+
+	return 0;
+}
+
+static int cardhu_wifi_reset(int on)
+{
+	pr_debug("%s: do nothing\n", __func__);
+	return 0;
+}
+
+static int __init cardhu_wifi_init(void)
+{
+
+	gpio_request(CARDHU_WLAN_PWR, "wlan_power");
+	gpio_request(CARDHU_WLAN_RST, "wlan_rst");
+
+	tegra_gpio_enable(CARDHU_WLAN_PWR);
+	tegra_gpio_enable(CARDHU_WLAN_RST);
+
+	gpio_direction_output(CARDHU_WLAN_PWR, 0);
+	gpio_direction_output(CARDHU_WLAN_RST, 0);
+
+	platform_device_register(&cardhu_wifi_device);
+	return 0;
+}
+
 int __init cardhu_sdhci_init(void)
 {
 #if 0
@@ -259,5 +351,6 @@ int __init cardhu_sdhci_init(void)
 	(void)pm269_sd_wp_gpio_init;
 #endif
 
+	cardhu_wifi_init();
 	return 0;
 }