From a8cbf80e9fb175feb40cb56af93b3504f3c68551 Mon Sep 17 00:00:00 2001 From: "Daniel G. Morse" Date: Tue, 26 May 2020 02:55:50 +0100 Subject: HID: Wiimote: Treat the d-pad as an analogue stick The controllers from the Super Nintendo Classic Edition (AKA the SNES Mini) appear as a Classic Controller Pro when connected to a Wii Remote. All the buttons work as the same, with the d-pad being mapped the same as the d-pad on the Classic Controller Pro. This differs from the behaviour of most controllers with d-pads and no analogue sticks, where the d-pad maps to ABS_HAT1X for left and right, and ABS_HAT1Y for up and down. This patch adds an option to the hid-wiimote module to make the Super Nintendo Classic Controller behave this way. The patch has been tested with a Super Nintendo Classic Controller plugged into a Wii Remote in both with the option both enabled and disabled. When enabled the d-pad acts as the analogue control, and when disabled it acts as it did before the patch was applied. This patch has not been tested with e Wii Classic Controller (either the original or the pro version) as I do not have one of these controllers. Although I have not tested it with these controllers, I think it is likely this patch will also work with the NES Classic Edition Controllers. Signed-off-by: Daniel G. Morse Reviewed-by: David Rheinsberg Signed-off-by: Jiri Kosina --- drivers/hid/hid-wiimote-core.c | 5 +++ drivers/hid/hid-wiimote-modules.c | 67 +++++++++++++++++++++++++-------------- drivers/hid/hid-wiimote.h | 2 ++ 3 files changed, 50 insertions(+), 24 deletions(-) (limited to 'drivers/hid') diff --git a/drivers/hid/hid-wiimote-core.c b/drivers/hid/hid-wiimote-core.c index 92874dbe4d4a..679e142fc850 100644 --- a/drivers/hid/hid-wiimote-core.c +++ b/drivers/hid/hid-wiimote-core.c @@ -1870,6 +1870,11 @@ static const struct hid_device_id wiimote_hid_devices[] = { USB_DEVICE_ID_NINTENDO_WIIMOTE2) }, { } }; + +bool wiimote_dpad_as_analog = false; +module_param_named(dpad_as_analog, wiimote_dpad_as_analog, bool, 0644); +MODULE_PARM_DESC(dpad_as_analog, "Use D-Pad as main analog input"); + MODULE_DEVICE_TABLE(hid, wiimote_hid_devices); static struct hid_driver wiimote_hid_driver = { diff --git a/drivers/hid/hid-wiimote-modules.c b/drivers/hid/hid-wiimote-modules.c index 2c3925357857..213c58bf2495 100644 --- a/drivers/hid/hid-wiimote-modules.c +++ b/drivers/hid/hid-wiimote-modules.c @@ -1088,12 +1088,28 @@ static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext) * is the same as before. */ + static const s8 digital_to_analog[3] = {0x20, 0, -0x20}; + if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) { - lx = ext[0] & 0x3e; - ly = ext[1] & 0x3e; + if (wiimote_dpad_as_analog) { + lx = digital_to_analog[1 - !(ext[4] & 0x80) + + !(ext[1] & 0x01)]; + ly = digital_to_analog[1 - !(ext[4] & 0x40) + + !(ext[0] & 0x01)]; + } else { + lx = (ext[0] & 0x3e) - 0x20; + ly = (ext[1] & 0x3e) - 0x20; + } } else { - lx = ext[0] & 0x3f; - ly = ext[1] & 0x3f; + if (wiimote_dpad_as_analog) { + lx = digital_to_analog[1 - !(ext[4] & 0x80) + + !(ext[5] & 0x02)]; + ly = digital_to_analog[1 - !(ext[4] & 0x40) + + !(ext[5] & 0x01)]; + } else { + lx = (ext[0] & 0x3f) - 0x20; + ly = (ext[1] & 0x3f) - 0x20; + } } rx = (ext[0] >> 3) & 0x18; @@ -1110,19 +1126,13 @@ static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext) rt <<= 1; lt <<= 1; - input_report_abs(wdata->extension.input, ABS_HAT1X, lx - 0x20); - input_report_abs(wdata->extension.input, ABS_HAT1Y, ly - 0x20); + input_report_abs(wdata->extension.input, ABS_HAT1X, lx); + input_report_abs(wdata->extension.input, ABS_HAT1Y, ly); input_report_abs(wdata->extension.input, ABS_HAT2X, rx - 0x20); input_report_abs(wdata->extension.input, ABS_HAT2Y, ry - 0x20); input_report_abs(wdata->extension.input, ABS_HAT3X, rt); input_report_abs(wdata->extension.input, ABS_HAT3Y, lt); - input_report_key(wdata->extension.input, - wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT], - !(ext[4] & 0x80)); - input_report_key(wdata->extension.input, - wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN], - !(ext[4] & 0x40)); input_report_key(wdata->extension.input, wiimod_classic_map[WIIMOD_CLASSIC_KEY_LT], !(ext[4] & 0x20)); @@ -1157,20 +1167,29 @@ static void wiimod_classic_in_ext(struct wiimote_data *wdata, const __u8 *ext) wiimod_classic_map[WIIMOD_CLASSIC_KEY_ZR], !(ext[5] & 0x04)); - if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) { - input_report_key(wdata->extension.input, - wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT], - !(ext[1] & 0x01)); - input_report_key(wdata->extension.input, - wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP], - !(ext[0] & 0x01)); - } else { + if (!wiimote_dpad_as_analog) { input_report_key(wdata->extension.input, - wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT], - !(ext[5] & 0x02)); + wiimod_classic_map[WIIMOD_CLASSIC_KEY_RIGHT], + !(ext[4] & 0x80)); input_report_key(wdata->extension.input, - wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP], - !(ext[5] & 0x01)); + wiimod_classic_map[WIIMOD_CLASSIC_KEY_DOWN], + !(ext[4] & 0x40)); + + if (wdata->state.flags & WIIPROTO_FLAG_MP_ACTIVE) { + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT], + !(ext[1] & 0x01)); + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP], + !(ext[0] & 0x01)); + } else { + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_LEFT], + !(ext[5] & 0x02)); + input_report_key(wdata->extension.input, + wiimod_classic_map[WIIMOD_CLASSIC_KEY_UP], + !(ext[5] & 0x01)); + } } input_sync(wdata->extension.input); diff --git a/drivers/hid/hid-wiimote.h b/drivers/hid/hid-wiimote.h index b2a26a0a8f12..ad4ff837f43e 100644 --- a/drivers/hid/hid-wiimote.h +++ b/drivers/hid/hid-wiimote.h @@ -162,6 +162,8 @@ struct wiimote_data { struct work_struct init_worker; }; +extern bool wiimote_dpad_as_analog; + /* wiimote modules */ enum wiimod_module { -- cgit v1.2.3