Enable Bluetooth on Tinker Board

0001-Bluetooth-hci_h5-Add-device-tree-support.patch

From 9ac9831e38b3e816431ae371f4dc429dc2213129 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Sun, 17 Feb 2019 11:46:01 +0100
Subject: [PATCH 1/2] Bluetooth: hci_h5: Add device tree support

This adds support for device tree probing of Realtek chipset 8723bs
(e.g. used on Asus Tinker Board).

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 drivers/bluetooth/Kconfig  |  2 +-
 drivers/bluetooth/hci_h5.c | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
index 7b2e76e..8392add 100644
--- a/drivers/bluetooth/Kconfig
+++ b/drivers/bluetooth/Kconfig
@@ -200,7 +200,7 @@ config BT_HCIUART_RTL
 	depends on BT_HCIUART
 	depends on BT_HCIUART_SERDEV
 	depends on GPIOLIB
-	depends on ACPI
+	depends on (!ACPI || SERIAL_DEV_CTRL_TTYPORT)
 	select BT_HCIUART_3WIRE
 	select BT_RTL
 	help
diff --git a/drivers/bluetooth/hci_h5.c b/drivers/bluetooth/hci_h5.c
index 069d1c8..5dbaff4 100644
--- a/drivers/bluetooth/hci_h5.c
+++ b/drivers/bluetooth/hci_h5.c
@@ -26,6 +26,7 @@
 #include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
 #include <linux/mod_devicetable.h>
+#include <linux/of_device.h>
 #include <linux/serdev.h>
 #include <linux/skbuff.h>
 
@@ -822,6 +823,8 @@ static int h5_serdev_probe(struct serdev_device *serdev)
 		if (h5->vnd->acpi_gpio_map)
 			devm_acpi_dev_add_driver_gpios(dev,
 						       h5->vnd->acpi_gpio_map);
+	} else {
+		h5->vnd = of_device_get_match_data(&serdev->dev);
 	}
 
 	h5->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
@@ -1011,6 +1014,16 @@ static const struct acpi_device_id h5_acpi_match[] = {
 MODULE_DEVICE_TABLE(acpi, h5_acpi_match);
 #endif
 
+#ifdef CONFIG_OF
+static const struct of_device_id h5_of_match[] = {
+#ifdef CONFIG_BT_HCIUART_RTL
+	{ .compatible = "realtek,rtl8723bs-bt", .data = &rtl_vnd },
+#endif
+	{ },
+};
+MODULE_DEVICE_TABLE(of, h5_of_match);
+#endif
+
 static const struct dev_pm_ops h5_serdev_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(h5_serdev_suspend, h5_serdev_resume)
 };
@@ -1020,6 +1033,7 @@ static struct serdev_device_driver h5_serdev_driver = {
 	.remove = h5_serdev_remove,
 	.driver = {
 		.name = "hci_uart_h5",
+		.of_match_table = of_match_ptr(h5_of_match),
 		.acpi_match_table = ACPI_PTR(h5_acpi_match),
 		.pm = &h5_serdev_pm_ops,
 	},
-- 
2.7.4

0002-dt-bindings-Add-support-for-Realtek-Bluetooth-serial.patch

From d71e4a00f42040895901168fe80aa17957ae7a75 Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Sun, 17 Feb 2019 11:50:59 +0100
Subject: [PATCH 2/2] dt-bindings: Add support for Realtek Bluetooth serial
 devices

This adds support for Realtek Bluetooth serial devices.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
---
 .../devicetree/bindings/net/realtek-bluetooth.txt      | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/realtek-bluetooth.txt

diff --git a/Documentation/devicetree/bindings/net/realtek-bluetooth.txt b/Documentation/devicetree/bindings/net/realtek-bluetooth.txt
new file mode 100644
index 0000000..4002ca1
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/realtek-bluetooth.txt
@@ -0,0 +1,18 @@
+Realtek Bluetooth devices connected via a UART
+
+These devices typically also have a WI-FI connected via SDIO - the
+compatible described here is used just for referencing the Bluetooth.
+
+- compatible: should be "realtek,rtl8723bs-bt" 
+
+Example:
+
+&uart0 {
+	pinctrl-0 = <&uart0_pins>;
+
+	bluetooth {
+		compatible = "realtek,rtl8723bs-bt";
+		enable-gpios = <&gpio4 29 GPIO_ACTIVE_HIGH>;
+		devive-wake-gpios = <&gpio4 26 GPIO_ACTIVE_HIGH>;
+	};
+};
-- 
2.7.4