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[2/2] HID: nintendo: add parameter to swap face buttons

Message ID 20220512001500.16739-2-fletcher0max@gmail.com (mailing list archive)
State New
Delegated to: Jiri Kosina
Headers show
Series [1/2] HID: nintendo: fix face button mappings | expand

Commit Message

Maxwell Fletcher May 12, 2022, 12:15 a.m. UTC
Add the module parameter "faceswap" that swaps the face (ABXY) buttons to match the printed layout. This will be helpful for people who prefer to use the Nintendo layout over the Xbox layout.

Signed-off-by: Max Fletcher <fletcher0max@gmail.com>
---
 drivers/hid/hid-nintendo.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)
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Patch

diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c
index 7735971ede3f..925cdcd0ac77 100644
--- a/drivers/hid/hid-nintendo.c
+++ b/drivers/hid/hid-nintendo.c
@@ -32,6 +32,7 @@ 
 #include <linux/jiffies.h>
 #include <linux/leds.h>
 #include <linux/module.h>
+#include <linux/moduleparam.h>
 #include <linux/power_supply.h>
 #include <linux/spinlock.h>
 
@@ -320,6 +321,8 @@  struct joycon_imu_cal {
 	s16 scale[3];
 };
 
+bool faceswap;
+
 /*
  * All the controller's button values are stored in a u32.
  * They can be accessed with bitwise ANDs.
@@ -1351,10 +1354,17 @@  static void joycon_parse_report(struct joycon_ctlr *ctlr,
 		input_report_key(dev, BTN_START, btns & JC_BTN_PLUS);
 		input_report_key(dev, BTN_THUMBR, btns & JC_BTN_RSTICK);
 		input_report_key(dev, BTN_MODE, btns & JC_BTN_HOME);
-		input_report_key(dev, BTN_X, btns & JC_BTN_Y);
-		input_report_key(dev, BTN_Y, btns & JC_BTN_X);
-		input_report_key(dev, BTN_B, btns & JC_BTN_A);
-		input_report_key(dev, BTN_A, btns & JC_BTN_B);
+		if (!faceswap) {
+			input_report_key(dev, BTN_X, btns & JC_BTN_Y);
+			input_report_key(dev, BTN_Y, btns & JC_BTN_X);
+			input_report_key(dev, BTN_B, btns & JC_BTN_A);
+			input_report_key(dev, BTN_A, btns & JC_BTN_B);
+		} else {
+			input_report_key(dev, BTN_Y, btns & JC_BTN_Y);
+			input_report_key(dev, BTN_X, btns & JC_BTN_X);
+			input_report_key(dev, BTN_A, btns & JC_BTN_A);
+			input_report_key(dev, BTN_B, btns & JC_BTN_B);
+		}
 	}
 
 	input_sync(dev);
@@ -2313,6 +2323,10 @@  static const struct hid_device_id nintendo_hid_devices[] = {
 };
 MODULE_DEVICE_TABLE(hid, nintendo_hid_devices);
 
+module_param(faceswap, bool, 0440);
+MODULE_PARM_DESC(faceswap,
+		 "Swaps the face buttons to match the printed layout");
+
 static struct hid_driver nintendo_hid_driver = {
 	.name		= "nintendo",
 	.id_table	= nintendo_hid_devices,