Hi
On Fri, Jun 19, 2020 at 9:25 AM Jiri Kosina <jikos@xxxxxxxxxx> wrote:
>
>
> CCing David Hermann in case he has any review comments to this.
>
> Thanks.
Yes, all good!
Reviewed-by: David Herrmann <dh.herrmann@xxxxxxxxx>
(You want me to send an adjustment for `MAINTAINERS` to link to my new
email-address/name? Got married some time ago already, but forgot to
adjust the `MAINTAINERS` file.)
Thanks
David
> On Sat, 30 May 2020, Daniel Morse wrote:
>
> > 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.
> >
> > Changes from V1 to V2
> > * 3 if statements to control the behaviour, one to make the d-pad
> > register as button presses when the behaviour is disabled, and 2 to
> > make it act as an analog stick when enabled (once for each of the
> > motion plus states)
> > * the values for lx and ly are calculated and then passed to
> > input_report_abs() in one place, rather then calling
> > input_report_abs() from different places depending on how the values
> > are determined.
> > * using an array to map from button presses to analog value.
> > * reduced the values used to indicate the position of the analog stick
> >
> > Changes from V3 to V3
> > * Moved the definition of dpad_as_analog in hid-wiimote.h
> > * Renamed the dpad_as_analog vaiable to wiimote_dpad_as_analog
> > * changed digital_to_analog from an __s8 to static const s8
> > * Removed the unnecessary braces when getting values from digital_to_analog
> >
> > Note: I have also attached a patch file to this final version in
> > addition to the code in the body because gmail web client keeps
> > turning the tabs into spaces.
> >
> > Signed-off-by: Daniel G. Morse <dmorse@xxxxxxxxxxxxxx>
> > Reviewed-by: David Rheinsberg <david.rheinsberg@xxxxxxxxx>
> >
> > >From 8909feec10fda919d1ec46c95418d63ac52ee41f Mon Sep 17 00:00:00 2001
> > From: Speedfox <speedfox@xxxxxxxxxxxxxx>
> > Date: Tue, 26 May 2020 02:55:50 +0100
> > Subject: [PATCH] Added option to make d-pad analog
> >
> > Updates from code review
> > ---
> > 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(-)
> >
> > 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 {
> > --
> > 2.25.1
> >
>
> --
> Jiri Kosina
> SUSE Labs
>
