From: kuibao zhang <kuibao.zhang@amlogic.com>
Date: Fri, 2 Feb 2018 13:28:39 +0000 (+0800)
Subject: BT: g12a_skt: initial host wake bt pin [1/1]
X-Git-Tag: khadas-vims-v0.9.6-release~2446
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c6ef988be4ab95f9e9dc4564bc7a4a81dfbbde7a;p=platform%2Fkernel%2Flinux-amlogic.git

BT: g12a_skt: initial host wake bt pin [1/1]

PD#156734: bt: g12a_skt: initial host wake bt pin

1.host wake bt pin (gpiox_19) should keep high when bt
lpm function is enabled, otherwise bt moudle would go
to sleep.
2.set this pin in dts

Change-Id: I401fa158bf11b60ef1a7727ea25e55f94cf273a8
Signed-off-by: kuibao zhang <kuibao.zhang@amlogic.com>
---

diff --git a/arch/arm64/boot/dts/amlogic/g12a_skt.dts b/arch/arm64/boot/dts/amlogic/g12a_skt.dts
index 038fc60..e65f555 100644
--- a/arch/arm64/boot/dts/amlogic/g12a_skt.dts
+++ b/arch/arm64/boot/dts/amlogic/g12a_skt.dts
@@ -234,6 +234,7 @@
 		dev_name = "bt-dev";
 		status = "okay";
 		gpio_reset = <&gpio       GPIOX_17       GPIO_ACTIVE_HIGH>;
+		gpio_hostwake = <&gpio       GPIOX_19       GPIO_ACTIVE_HIGH>;
 	};
 
 	wifi{
diff --git a/drivers/amlogic/bluetooth/bt_device.c b/drivers/amlogic/bluetooth/bt_device.c
index c18a676..af0ea21 100644
--- a/drivers/amlogic/bluetooth/bt_device.c
+++ b/drivers/amlogic/bluetooth/bt_device.c
@@ -57,6 +57,17 @@ static void bt_device_init(struct bt_dev_data *pdata)
 	if (pdata->gpio_en > 0)
 		gpio_request(pdata->gpio_en, BT_RFKILL);
 
+	if (pdata->gpio_hostwake > 0) {
+		gpio_request(pdata->gpio_hostwake, BT_RFKILL);
+
+	if ((pdata->power_on_pin_OD) && (!pdata->power_low_level)) {
+		gpio_direction_input(pdata->gpio_hostwake);
+		} else {
+			gpio_direction_output(pdata->gpio_hostwake,
+				!pdata->power_low_level);
+		}
+	}
+
 }
 
 static void bt_device_deinit(struct bt_dev_data *pdata)
@@ -67,6 +78,9 @@ static void bt_device_deinit(struct bt_dev_data *pdata)
 	if (pdata->gpio_en > 0)
 		gpio_free(pdata->gpio_en);
 
+	if (pdata->gpio_hostwake > 0)
+		gpio_free(pdata->gpio_hostwake);
+
 }
 
 static void bt_device_on(struct bt_dev_data *pdata)
@@ -133,6 +147,7 @@ static void bt_device_off(struct bt_dev_data *pdata)
 			set_usb_bt_power(0);
 		}
 	}
+
 	msleep(20);
 }
 
@@ -143,10 +158,10 @@ static int bt_set_block(void *data, bool blocked)
 	pr_info("BT_RADIO going: %s\n", blocked ? "off" : "on");
 
 	if (!blocked) {
-		pr_info("BCM_BT: going ON\n");
+		pr_info("AML_BT: going ON\n");
 		bt_device_on(pdata);
 	} else {
-		pr_info("BCM_BT: going OFF\n");
+		pr_info("AML_BT: going OFF\n");
 	bt_device_off(pdata);
 	}
 	return 0;
@@ -205,7 +220,7 @@ static int bt_probe(struct platform_device *pdev)
 			pdata->gpio_reset = desc_to_gpio(desc);
 		}
 
-	ret = of_property_read_string(pdev->dev.of_node,
+		ret = of_property_read_string(pdev->dev.of_node,
 		"gpio_en", &str);
 		if (ret) {
 			pr_warn("not get gpio_en\n");
@@ -215,6 +230,16 @@ static int bt_probe(struct platform_device *pdev)
 				"gpio_en", 0, NULL);
 			pdata->gpio_en = desc_to_gpio(desc);
 		}
+		ret = of_property_read_string(pdev->dev.of_node,
+		"gpio_hostwake", &str);
+		if (ret) {
+			pr_warn("not get gpio_hostwake\n");
+			pdata->gpio_hostwake = 0;
+		} else {
+			desc = of_get_named_gpiod_flags(pdev->dev.of_node,
+				"gpio_hostwake", 0, NULL);
+			pdata->gpio_hostwake = desc_to_gpio(desc);
+		}
 
 		prop = of_get_property(pdev->dev.of_node,
 		"power_low_level", NULL);
diff --git a/include/linux/amlogic/bt_device.h b/include/linux/amlogic/bt_device.h
index e0c6de1..f233dbe 100644
--- a/include/linux/amlogic/bt_device.h
+++ b/include/linux/amlogic/bt_device.h
@@ -21,6 +21,7 @@
 struct bt_dev_data {
 	int gpio_reset;
 	int gpio_en;
+	int gpio_hostwake;
 	int power_low_level;
 	int power_on_pin_OD;
 };