tegra bluesleep: creating a bluesleep platform device.

Based on CONFIG_BT_BLUESLEEP configuration variable, a bluesleep device
will be created and used to actively manage the BT device power.

Bug 791669, 773186

(cherry picked from commit 011a705248274804c80c12af5366693e6662829b)
Reviewed-on: http://git-master/r/6851

Original-Change-Id: If5275ecfc920a038ec96928ea7f7f739f5051e33
(cherry picked from commit ae1bf987d38b15d6688cd2152ee4b4624211c113)
Reviewed-on: http://git-master/r/19868
Reviewed-by: Anantha Idapalapati <aidapalapati@nvidia.com>
Tested-by: Anantha Idapalapati <aidapalapati@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

Rebase-Id: R5e8a80983a7d22f608176224ca4d8295b96fa931

1 files changed, 57 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/board-ventana.c b/arch/arm/mach-tegra/board-ventana.c
index 89a27cb229e9..c9bcae3faf62 100644
--- a/arch/arm/mach-tegra/board-ventana.c
+++ b/arch/arm/mach-tegra/board-ventana.c
@@ -126,6 +126,60 @@ static noinline void __init ventana_bt_rfkill(void)
 static inline void ventana_bt_rfkill(void) { }
 #endif
 
+#ifdef CONFIG_BT_BLUESLEEP
+static noinline void __init tegra_setup_bluesleep(void)
+{
+	struct platform_device *pdev = NULL;
+	struct resource *res;
+
+	pdev = platform_device_alloc("bluesleep", 0);
+	if (!pdev) {
+		pr_err("unable to allocate platform device for bluesleep");
+		return;
+	}
+
+	res = kzalloc(sizeof(struct resource) * 3, GFP_KERNEL);
+	if (!res) {
+		pr_err("unable to allocate resource for bluesleep\n");
+		goto err_free_dev;
+	}
+
+	res[0].name   = "gpio_host_wake";
+	res[0].start  = TEGRA_GPIO_PU6;
+	res[0].end    = TEGRA_GPIO_PU6;
+	res[0].flags  = IORESOURCE_IO;
+
+	res[1].name   = "gpio_ext_wake";
+	res[1].start  = TEGRA_GPIO_PU1;
+	res[1].end    = TEGRA_GPIO_PU1;
+	res[1].flags  = IORESOURCE_IO;
+
+	res[2].name   = "host_wake";
+	res[2].start  = gpio_to_irq(TEGRA_GPIO_PU6);
+	res[2].end    = gpio_to_irq(TEGRA_GPIO_PU6);
+	res[2].flags  = IORESOURCE_IRQ;
+
+	if (platform_device_add_resources(pdev, res, 3)) {
+		pr_err("unable to add resources to bluesleep device\n");
+		goto err_free_res;
+	}
+
+	if (platform_device_add(pdev)) {
+		pr_err("unable to add bluesleep device\n");
+		goto err_free_res;
+	}
+	return;
+
+err_free_res:
+	kfree(res);
+err_free_dev:
+	platform_device_put(pdev);
+	return;
+}
+#else
+static inline void tegra_setup_bluesleep(void) { }
+#endif
+
 static __initdata struct tegra_clk_init_table ventana_clk_init_table[] = {
 	/* name		parent		rate		enabled */
 	{ "blink",	"clk_32k",	32768,		false},
@@ -619,6 +673,9 @@ static void __init tegra_ventana_init(void)
 	ventana_power_off_init();
 	ventana_emc_init();
 
+#ifdef CONFIG_BT_BLUESLEEP
+	tegra_setup_bluesleep();
+#endif
 	tegra_release_bootloader_fb();
 }