Re: [PATCH v2 2/2] Input: wacom - add support for three new Intuos devices

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On Thu, Nov 07, 2013 at 08:25:40PM -0600, Chris Bagwell wrote:
> On Thu, Oct 10, 2013 at 4:17 PM, Ping Cheng <pinglinux@xxxxxxxxx> wrote:
> > This series of models added a hardware switch to turn touch
> > data on/off. To report the state of the switch, SW_TOUCH
> > is added in include/uapi/linux/input.h.
> 
> So I guess the big point is this patch can't go in until a SW_TOUCH
> goes in first.
> 
> Since the 1/2 or this 2/2 series has already gone in, would you mind
> breaking this
> remaining patch up into the basic support for new Intuos (without the
> SW_TOUCH) and
> then a separate patch to add SW_TOUCH support on top of that?  Then
> the basic support can go in ASAP.
> 
> I only have comments on this patch related to the SW_TOUCH part... things like:
> 
>  * should the SW_TOUCH be reported against the wireless interface or
> the touch interface... userland apps may have an opinion on which is
> best.

against the touch device. from userspace, seeing that something is a touch
device but SW_TOUCH is off is a lot easier to deal with than having a
separate device report SW_TOUCH and we'll have to find the matching
userspace device this applies to.
(unless I'm misreading something here)

>  * the part with updating SW_TOUCH from unrelated interfaces could use
> a review by someone like Dmitry for possible issues.
>  * It would be better if you didn't add that EV_SW for HW that will
> not report the SW_TOUCH.

definitely agree here.

I still don't think that changing the INTUOS naming convention to use
underscores is a good idea given that in a year's time no-one will care that
some intuos used to be bamboos but we'll be stuck with the mismatched naming
scheme for a while.

Acked-by: Peter Hutterer <peter.hutterer@xxxxxxxxx> otherwise though

Cheers,
   Peter

> If you break the patch into 2, you can add my line for the basic
> support without SW_TOUCH:
> 
> Reviewed-by: Chris Bagwell <chris@xxxxxxxxxxxxxx>
> 
> Chris
> 
> >
> > The driver is also updated to process wireless devices that do
> > not support touch interface.
> >
> > Tested-by: Jason Gerecke <killertofu@xxxxxxxxx>
> > Signed-off-by: Ping Cheng <pingc@xxxxxxxxx>
> > ---
> > v2: Change SW_TOUCH_ENABLED to SW_TOUCH and clear BTN_TOUCH bit
> > for button only interfaces as suggested by Peter Hutterer.
> > ---
> >  drivers/input/tablet/wacom_sys.c | 16 +++++++-
> >  drivers/input/tablet/wacom_wac.c | 87 ++++++++++++++++++++++++++++++++--------
> >  drivers/input/tablet/wacom_wac.h |  7 ++++
> >  include/uapi/linux/input.h       |  1 +
> >  4 files changed, 93 insertions(+), 18 deletions(-)
> >
> > diff --git a/drivers/input/tablet/wacom_sys.c b/drivers/input/tablet/wacom_sys.c
> > index 7bdb5e9..efd9729 100644
> > --- a/drivers/input/tablet/wacom_sys.c
> > +++ b/drivers/input/tablet/wacom_sys.c
> > @@ -1190,12 +1190,15 @@ static void wacom_wireless_work(struct work_struct *work)
> >                 wacom_wac1->features.device_type = BTN_TOOL_PEN;
> >                 snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
> >                          wacom_wac1->features.name);
> > +               wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
> > +               wacom_wac1->shared->type = wacom_wac1->features.type;
> >                 error = wacom_register_input(wacom1);
> >                 if (error)
> >                         goto fail;
> >
> >                 /* Touch interface */
> > -               if (wacom_wac1->features.touch_max) {
> > +               if (wacom_wac1->features.touch_max ||
> > +                   wacom_wac1->features.type == INTUOS_HT) {
> >                         wacom_wac2->features =
> >                                 *((struct wacom_features *)id->driver_info);
> >                         wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
> > @@ -1210,6 +1213,10 @@ static void wacom_wireless_work(struct work_struct *work)
> >                         error = wacom_register_input(wacom2);
> >                         if (error)
> >                                 goto fail;
> > +
> > +                       if (wacom_wac1->features.type == INTUOS_HT &&
> > +                           wacom_wac1->features.touch_max)
> > +                               wacom_wac->shared->touch_input = wacom_wac2->input;
> >                 }
> >
> >                 error = wacom_initialize_battery(wacom);
> > @@ -1318,7 +1325,7 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
> >          * HID descriptor. If this is the touch interface (wMaxPacketSize
> >          * of WACOM_PKGLEN_BBTOUCH3), override the table values.
> >          */
> > -       if (features->type >= INTUOS5S && features->type <= INTUOSPL) {
> > +       if (features->type >= INTUOS5S && features->type <= INTUOS_HT) {
> >                 if (endpoint->wMaxPacketSize == WACOM_PKGLEN_BBTOUCH3) {
> >                         features->device_type = BTN_TOOL_FINGER;
> >                         features->pktlen = WACOM_PKGLEN_BBTOUCH3;
> > @@ -1390,6 +1397,11 @@ static int wacom_probe(struct usb_interface *intf, const struct usb_device_id *i
> >                 }
> >         }
> >
> > +       if (wacom_wac->features.type == INTUOS_HT && wacom_wac->features.touch_max) {
> > +               if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
> > +                       wacom_wac->shared->touch_input = wacom_wac->input;
> > +       }
> > +
> >         return 0;
> >
> >   fail5: wacom_destroy_leds(wacom);
> > diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c
> > index 9c8eded..4cbea85 100644
> > --- a/drivers/input/tablet/wacom_wac.c
> > +++ b/drivers/input/tablet/wacom_wac.c
> > @@ -1176,10 +1176,17 @@ static void wacom_bpt3_touch_msg(struct wacom_wac *wacom, unsigned char *data)
> >  static void wacom_bpt3_button_msg(struct wacom_wac *wacom, unsigned char *data)
> >  {
> >         struct input_dev *input = wacom->input;
> > +       struct wacom_features *features = &wacom->features;
> >
> > -       input_report_key(input, BTN_LEFT, (data[1] & 0x08) != 0);
> > +       if (features->type == INTUOS_HT) {
> > +               input_report_key(input, BTN_LEFT, (data[1] & 0x02) != 0);
> > +               input_report_key(input, BTN_BACK, (data[1] & 0x08) != 0);
> > +       } else {
> > +
> > +               input_report_key(input, BTN_BACK, (data[1] & 0x02) != 0);
> > +               input_report_key(input, BTN_LEFT, (data[1] & 0x08) != 0);
> > +       }
> >         input_report_key(input, BTN_FORWARD, (data[1] & 0x04) != 0);
> > -       input_report_key(input, BTN_BACK, (data[1] & 0x02) != 0);
> >         input_report_key(input, BTN_RIGHT, (data[1] & 0x01) != 0);
> >  }
> >
> > @@ -1213,13 +1220,23 @@ static int wacom_bpt3_touch(struct wacom_wac *wacom)
> >
> >  static int wacom_bpt_pen(struct wacom_wac *wacom)
> >  {
> > +       struct wacom_features *features = &wacom->features;
> >         struct input_dev *input = wacom->input;
> >         unsigned char *data = wacom->data;
> >         int prox = 0, x = 0, y = 0, p = 0, d = 0, pen = 0, btn1 = 0, btn2 = 0;
> >
> > -       if (data[0] != 0x02)
> > +       if (data[0] != WACOM_REPORT_PENABLED && data[0] != WACOM_REPORT_USB_MODE)
> >             return 0;
> >
> > +       if (data[0] == WACOM_REPORT_USB_MODE) {
> > +               if ((features->type == INTUOS_HT) && features->touch_max) {
> > +                       input_report_switch(wacom->shared->touch_input,
> > +                                           SW_TOUCH, data[8] & 0x40);
> > +                       input_sync(wacom->shared->touch_input);
> > +               }
> > +               return 0;
> > +       }
> > +
> >         prox = (data[1] & 0x20) == 0x20;
> >
> >         /*
> > @@ -1297,13 +1314,20 @@ static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len)
> >         unsigned char *data = wacom->data;
> >         int connected;
> >
> > -       if (len != WACOM_PKGLEN_WIRELESS || data[0] != 0x80)
> > +       if (len != WACOM_PKGLEN_WIRELESS || data[0] != WACOM_REPORT_WL_MODE)
> >                 return 0;
> >
> >         connected = data[1] & 0x01;
> >         if (connected) {
> >                 int pid, battery;
> >
> > +               if ((wacom->shared->type == INTUOS_HT) &&
> > +                               wacom->shared->touch_max) {
> > +                       input_report_switch(wacom->shared->touch_input,
> > +                                       SW_TOUCH, data[5] & 0x40);
> > +                       input_sync(wacom->shared->touch_input);
> > +               }
> > +
> >                 pid = get_unaligned_be16(&data[6]);
> >                 battery = data[5] & 0x3f;
> >                 if (wacom->pid != pid) {
> > @@ -1391,6 +1415,7 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
> >                 break;
> >
> >         case BAMBOO_PT:
> > +       case INTUOS_HT:
> >                 sync = wacom_bpt_irq(wacom_wac, len);
> >                 break;
> >
> > @@ -1459,7 +1484,7 @@ void wacom_setup_device_quirks(struct wacom_features *features)
> >
> >         /* these device have multiple inputs */
> >         if (features->type >= WIRELESS ||
> > -           (features->type >= INTUOS5S && features->type <= INTUOSPL) ||
> > +           (features->type >= INTUOS5S && features->type <= INTUOS_HT) ||
> >             (features->oVid && features->oPid))
> >                 features->quirks |= WACOM_QUIRK_MULTI_INPUT;
> >
> > @@ -1531,7 +1556,8 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
> >         struct wacom_features *features = &wacom_wac->features;
> >         int i;
> >
> > -       input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
> > +       input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) |
> > +                              BIT_MASK(EV_SW);
> >
> >         __set_bit(BTN_TOUCH, input_dev->keybit);
> >         __set_bit(ABS_MISC, input_dev->absbit);
> > @@ -1771,33 +1797,48 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
> >                 __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
> >                 break;
> >
> > +       case INTUOS_HT:
> > +               if (features->touch_max &&
> > +                   (features->device_type == BTN_TOOL_FINGER))
> > +                       __set_bit(SW_TOUCH, input_dev->swbit);
> > +               /* fall through */
> > +
> >         case BAMBOO_PT:
> >                 __clear_bit(ABS_MISC, input_dev->absbit);
> >
> > -               __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
> > -
> >                 if (features->device_type == BTN_TOOL_FINGER) {
> > -                       unsigned int flags = INPUT_MT_POINTER;
> >
> >                         __set_bit(BTN_LEFT, input_dev->keybit);
> >                         __set_bit(BTN_FORWARD, input_dev->keybit);
> >                         __set_bit(BTN_BACK, input_dev->keybit);
> >                         __set_bit(BTN_RIGHT, input_dev->keybit);
> >
> > -                       if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
> > -                               input_set_abs_params(input_dev,
> > +                       if (features->touch_max) {
> > +                               /* touch interface */
> > +                               unsigned int flags = INPUT_MT_POINTER;
> > +
> > +                               __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
> > +                               if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
> > +                                       input_set_abs_params(input_dev,
> >                                                      ABS_MT_TOUCH_MAJOR,
> >                                                      0, features->x_max, 0, 0);
> > -                               input_set_abs_params(input_dev,
> > +                                       input_set_abs_params(input_dev,
> >                                                      ABS_MT_TOUCH_MINOR,
> >                                                      0, features->y_max, 0, 0);
> > +                               } else {
> > +                                       __set_bit(BTN_TOOL_FINGER, input_dev->keybit);
> > +                                       __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
> > +                                       flags = 0;
> > +                               }
> > +                               input_mt_init_slots(input_dev, features->touch_max, flags);
> >                         } else {
> > -                               __set_bit(BTN_TOOL_FINGER, input_dev->keybit);
> > -                               __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit);
> > -                               flags = 0;
> > +                               /* buttons/keys only interface */
> > +                               __clear_bit(ABS_X, input_dev->absbit);
> > +                               __clear_bit(ABS_Y, input_dev->absbit);
> > +                               __clear_bit(BTN_TOUCH, input_dev->keybit);
> >                         }
> > -                       input_mt_init_slots(input_dev, features->touch_max, flags);
> >                 } else if (features->device_type == BTN_TOOL_PEN) {
> > +                       __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
> >                         __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
> >                         __set_bit(BTN_TOOL_PEN, input_dev->keybit);
> >                         __set_bit(BTN_STYLUS, input_dev->keybit);
> > @@ -2194,6 +2235,17 @@ static const struct wacom_features wacom_features_0x300 =
> >  static const struct wacom_features wacom_features_0x301 =
> >         { "Wacom Bamboo One M",    WACOM_PKGLEN_BBPEN,    21648, 13530, 1023,
> >           31, BAMBOO_PT, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
> > +static const struct wacom_features wacom_features_0x302 =
> > +       { "Wacom Intuos PT S",     WACOM_PKGLEN_BBPEN,    15200,  9500, 1023,
> > +         31, INTUOS_HT, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
> > +         .touch_max = 16 };
> > +static const struct wacom_features wacom_features_0x303 =
> > +       { "Wacom Intuos PT M",     WACOM_PKGLEN_BBPEN,    21600, 13500, 1023,
> > +         31, INTUOS_HT, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
> > +         .touch_max = 16 };
> > +static const struct wacom_features wacom_features_0x30E =
> > +       { "Wacom Intuos S",        WACOM_PKGLEN_BBPEN,    15200,  9500, 1023,
> > +         31, INTUOS_HT, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
> >  static const struct wacom_features wacom_features_0x6004 =
> >         { "ISD-V4",               WACOM_PKGLEN_GRAPHIRE,  12800,  8000,  255,
> >           0, TABLETPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES };
> > @@ -2329,6 +2381,9 @@ const struct usb_device_id wacom_ids[] = {
> >         { USB_DEVICE_WACOM(0x10D) },
> >         { USB_DEVICE_WACOM(0x300) },
> >         { USB_DEVICE_WACOM(0x301) },
> > +       { USB_DEVICE_WACOM(0x302) },
> > +       { USB_DEVICE_DETAILED(0x303, USB_CLASS_HID, 0, 0) },
> > +       { USB_DEVICE_DETAILED(0x30E, USB_CLASS_HID, 0, 0) },
> >         { USB_DEVICE_WACOM(0x304) },
> >         { USB_DEVICE_DETAILED(0x314, USB_CLASS_HID, 0, 0) },
> >         { USB_DEVICE_DETAILED(0x315, USB_CLASS_HID, 0, 0) },
> > diff --git a/drivers/input/tablet/wacom_wac.h b/drivers/input/tablet/wacom_wac.h
> > index fd23a37..ba9e335 100644
> > --- a/drivers/input/tablet/wacom_wac.h
> > +++ b/drivers/input/tablet/wacom_wac.h
> > @@ -54,6 +54,8 @@
> >  #define WACOM_REPORT_TPCST             16
> >  #define WACOM_REPORT_TPC1FGE           18
> >  #define WACOM_REPORT_24HDT             1
> > +#define WACOM_REPORT_WL_MODE           128
> > +#define WACOM_REPORT_USB_MODE          192
> >
> >  /* device quirks */
> >  #define WACOM_QUIRK_MULTI_INPUT                0x0001
> > @@ -81,6 +83,7 @@ enum {
> >         INTUOSPS,
> >         INTUOSPM,
> >         INTUOSPL,
> > +       INTUOS_HT,
> >         WACOM_21UX2,
> >         WACOM_22HD,
> >         DTK,
> > @@ -129,6 +132,10 @@ struct wacom_features {
> >  struct wacom_shared {
> >         bool stylus_in_proximity;
> >         bool touch_down;
> > +       /* for wireless device to access USB interfaces */
> > +       unsigned touch_max;
> > +       int type;
> > +       struct input_dev *touch_input;
> >  };
> >
> >  struct wacom_wac {
> > diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
> > index d08abf9..70e53e8 100644
> > --- a/include/uapi/linux/input.h
> > +++ b/include/uapi/linux/input.h
> > @@ -855,6 +855,7 @@ struct input_keymap_entry {
> >  #define SW_FRONT_PROXIMITY     0x0b  /* set = front proximity sensor active */
> >  #define SW_ROTATE_LOCK         0x0c  /* set = rotate locked/disabled */
> >  #define SW_LINEIN_INSERT       0x0d  /* set = inserted */
> > +#define SW_TOUCH               0x0e  /* set = touch switch turned on (touch events off) */
> >  #define SW_MAX                 0x0f
> >  #define SW_CNT                 (SW_MAX+1)
> >
> > --
> > 1.8.1.2
> >
> --
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