From 5e6a7c486b6542554e2599a5fdb031de76b95223 Mon Sep 17 00:00:00 2001
From: CTCaer <ctcaer@gmail.com>
Date: Sun, 16 Jan 2022 01:05:42 +0200
Subject: [PATCH] bdk: btn: enable HOME button as input

---
 bdk/soc/hw_init.c | 4 ++--
 bdk/utils/btn.c   | 5 +++++
 bdk/utils/btn.h   | 2 ++
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/bdk/soc/hw_init.c b/bdk/soc/hw_init.c
index 86345d7..1643876 100644
--- a/bdk/soc/hw_init.c
+++ b/bdk/soc/hw_init.c
@@ -138,8 +138,8 @@ static void _config_gpios(bool nx_hoag)
 	gpio_output_enable(GPIO_PORT_X, GPIO_PIN_7, GPIO_OUTPUT_DISABLE);
 
 	// Configure HOME as inputs.
-	// PINMUX_AUX(PINMUX_AUX_BUTTON_HOME) = PINMUX_INPUT_ENABLE | PINMUX_TRISTATE;
-	// gpio_config(GPIO_PORT_Y, GPIO_PIN_1, GPIO_MODE_GPIO);
+	PINMUX_AUX(PINMUX_AUX_BUTTON_HOME) = PINMUX_INPUT_ENABLE | PINMUX_TRISTATE;
+	gpio_config(GPIO_PORT_Y, GPIO_PIN_1, GPIO_MODE_GPIO);
 }
 
 static void _config_pmc_scratch()
diff --git a/bdk/utils/btn.c b/bdk/utils/btn.c
index cc36573..b06e1d5 100644
--- a/bdk/utils/btn.c
+++ b/bdk/utils/btn.c
@@ -44,6 +44,11 @@ u8 btn_read_vol()
 	return res;
 }
 
+u8 btn_read_home()
+{
+	return (!gpio_read(GPIO_PORT_Y, GPIO_PIN_1)) ? BTN_HOME : 0;
+}
+
 u8 btn_wait()
 {
 	u8 res = 0, btn = btn_read();
diff --git a/bdk/utils/btn.h b/bdk/utils/btn.h
index ac191fa..01f8fcb 100644
--- a/bdk/utils/btn.h
+++ b/bdk/utils/btn.h
@@ -23,10 +23,12 @@
 #define BTN_POWER    BIT(0)
 #define BTN_VOL_DOWN BIT(1)
 #define BTN_VOL_UP   BIT(2)
+#define BTN_HOME     BIT(3)
 #define BTN_SINGLE   BIT(7)
 
 u8 btn_read();
 u8 btn_read_vol();
+u8 btn_read_home();
 u8 btn_wait();
 u8 btn_wait_timeout(u32 time_ms, u8 mask);
 u8 btn_wait_timeout_single(u32 time_ms, u8 mask);