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Date: Thu, 24 Jul 2014 15:43:52 -0400
From: Benjamin Tissoires <benjamin.tissoires@...hat.com>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: Jiri Kosina <jkosina@...e.cz>, Ping Cheng <pinglinux@...il.com>,
Jason Gerecke <killertofu@...il.com>,
Przemo Firszt <przemo@...szt.eu>, linux-kernel@...r.kernel.org,
linux-input@...r.kernel.org
Subject: Re: [PATCH v2 07/10] Input - wacom: handle Graphire BT tablets in
wacom.ko
On Jul 24 2014 or thereabouts, Dmitry Torokhov wrote:
> Hi Benjamin,
>
> On Thu, Jul 24, 2014 at 02:14:02PM -0400, Benjamin Tissoires wrote:
> > First, merge the Graphire BT tablet.
> >
> > Signed-off-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
> > ---
> >
> > changes in v2:
> > - simplified because part of it has been splitted out in the previous commit.
> >
> > drivers/hid/hid-core.c | 1 -
> > drivers/hid/hid-wacom.c | 1 -
> > drivers/hid/wacom_sys.c | 42 +++++++++++++++++++++
> > drivers/hid/wacom_wac.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++-
> > drivers/hid/wacom_wac.h | 2 +
> > 5 files changed, 140 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
> > index 7cff1c2..4db6804 100644
> > --- a/drivers/hid/hid-core.c
> > +++ b/drivers/hid/hid-core.c
> > @@ -1920,7 +1920,6 @@ static const struct hid_device_id hid_have_special_driver[] = {
> > { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
> > { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
> > { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
> > - { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
> > { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
> > { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
> > { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
> > diff --git a/drivers/hid/hid-wacom.c b/drivers/hid/hid-wacom.c
> > index 4874f4e..967c457 100644
> > --- a/drivers/hid/hid-wacom.c
> > +++ b/drivers/hid/hid-wacom.c
> > @@ -952,7 +952,6 @@ static void wacom_remove(struct hid_device *hdev)
> > }
> >
> > static const struct hid_device_id wacom_devices[] = {
> > - { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE_BLUETOOTH) },
> > { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS4_BLUETOOTH) },
> >
> > { }
> > diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
> > index add76ec..8492177 100644
> > --- a/drivers/hid/wacom_sys.c
> > +++ b/drivers/hid/wacom_sys.c
> > @@ -265,6 +265,48 @@ static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
> > static int wacom_bt_query_tablet_data(struct hid_device *hdev, u8 speed,
> > struct wacom_features *features)
> > {
> > + struct wacom *wacom = hid_get_drvdata(hdev);
> > + int limit, ret;
> > + __u8 rep_data[2];
>
> I think just u8 in kerneli proper.
OK, I will adjust.
>
> > +
> > + switch (features->type) {
> > + case GRAPHIRE_BT:
> > + rep_data[0] = 0x03 ; rep_data[1] = 0x00;
> > + limit = 3;
> > + do {
> > + ret = hid_hw_raw_request(hdev, rep_data[0], rep_data, 2,
> > + HID_FEATURE_REPORT, HID_REQ_SET_REPORT);
> > + } while (ret < 0 && limit-- > 0);
> > +
> > + if (ret >= 0) {
> > + if (speed == 0)
> > + rep_data[0] = 0x05;
> > + else
> > + rep_data[0] = 0x06;
>
> I am a fan of
>
> rep_data[0] = speed == 0 ? 0x05 : 0x06;
>
> as it takes 1 line vs 3.
>
hehe
BTW, actually, I just copied/pasted the chunks from hid-wacom. But you
are right, a little cleanup is definitively better.
> > +
> > + rep_data[1] = 0x00;
> > + limit = 3;
> > + do {
> > + ret = hid_hw_raw_request(hdev, rep_data[0],
> > + rep_data, 2, HID_FEATURE_REPORT,
> > + HID_REQ_SET_REPORT);
> > + } while (ret < 0 && limit-- > 0);
> > +
> > + if (ret >= 0) {
> > + wacom->wacom_wac.bt_high_speed = speed;
> > + return 0;
> > + }
> > + }
> > +
> > + /*
> > + * Note that if the raw queries fail, it's not a hard failure
> > + * and it is safe to continue
> > + */
> > + hid_warn(hdev, "failed to poke device, command %d, err %d\n",
> > + rep_data[0], ret);
> > + break;
> > + }
> > +
> > return 0;
> > }
> >
> > diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
> > index 2c69326..06bc600 100644
> > --- a/drivers/hid/wacom_wac.c
> > +++ b/drivers/hid/wacom_wac.c
> > @@ -30,6 +30,10 @@
> > */
> > #define WACOM_CONTACT_AREA_SCALE 2607
> >
> > +/*percent of battery capacity for Graphire
> > + 8th value means AC online and show 100% capacity */
> > +static unsigned short batcap_gr[8] = { 1, 15, 25, 35, 50, 70, 100, 100 };
> > +
> > static int wacom_penpartner_irq(struct wacom_wac *wacom)
> > {
> > unsigned char *data = wacom->data;
> > @@ -263,11 +267,19 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
> > unsigned char *data = wacom->data;
> > struct input_dev *input = wacom->input;
> > struct input_dev *pad_input = wacom->pad_input;
> > + int battery_capacity, ps_connected;
> > int prox;
> > int rw = 0;
> > int retval = 0;
> >
> > - if (data[0] != WACOM_REPORT_PENABLED) {
> > + if (features->type == GRAPHIRE_BT) {
> > + if (data[0] != WACOM_REPORT_PENABLED_BT) {
> > + dev_dbg(input->dev.parent,
> > + "%s: received unknown report #%d\n", __func__,
> > + data[0]);
> > + goto exit;
> > + }
> > + } else if (data[0] != WACOM_REPORT_PENABLED) {
> > dev_dbg(input->dev.parent,
> > "%s: received unknown report #%d\n", __func__, data[0]);
> > goto exit;
> > @@ -301,7 +313,12 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
> > input_report_abs(input, ABS_X, le16_to_cpup((__le16 *)&data[2]));
> > input_report_abs(input, ABS_Y, le16_to_cpup((__le16 *)&data[4]));
> > if (wacom->tool[0] != BTN_TOOL_MOUSE) {
> > - input_report_abs(input, ABS_PRESSURE, data[6] | ((data[7] & 0x03) << 8));
> > + if (features->type == GRAPHIRE_BT)
> > + input_report_abs(input, ABS_PRESSURE, data[6] |
> > + (((__u16) (data[1] & 0x08)) << 5));
> > + else
> > + input_report_abs(input, ABS_PRESSURE, data[6] |
> > + ((data[7] & 0x03) << 8));
> > input_report_key(input, BTN_TOUCH, data[1] & 0x01);
> > input_report_key(input, BTN_STYLUS, data[1] & 0x02);
> > input_report_key(input, BTN_STYLUS2, data[1] & 0x04);
> > @@ -312,6 +329,23 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
> > features->type == WACOM_MO) {
> > input_report_abs(input, ABS_DISTANCE, data[6] & 0x3f);
> > rw = (data[7] & 0x04) - (data[7] & 0x03);
> > + } else if (features->type == GRAPHIRE_BT) {
> > + /* Compute distance between mouse and tablet */
> > + rw = 44 - (data[6] >> 2);
> > + if (rw < 0)
> > + rw = 0;
> > + else if (rw > 31)
> > + rw = 31;
>
> rw = clamp_val(rw, 0, 31);
>
> ?
could be...
I'll do the tests and resubmit later the v3. I'll wait a little in case
you have other comments on the other patches :)
Cheers,
Benjamin
>
> > + input_report_abs(input, ABS_DISTANCE, rw);
> > + if (((data[1] >> 5) & 3) == 2) {
> > + /* Mouse with wheel */
> > + input_report_key(input, BTN_MIDDLE,
> > + data[1] & 0x04);
> > + rw = (data[6] & 0x01) ? -1 :
> > + (data[6] & 0x02) ? 1 : 0;
> > + } else {
> > + rw = 0;
> > + }
> > } else {
> > input_report_abs(input, ABS_DISTANCE, data[7] & 0x3f);
> > rw = -(signed char)data[6];
> > @@ -358,6 +392,31 @@ static int wacom_graphire_irq(struct wacom_wac *wacom)
> > retval = 1;
> > }
> > break;
> > + case GRAPHIRE_BT:
> > + prox = data[7] & 0x03;
> > + if (prox || wacom->id[1]) {
> > + wacom->id[1] = PAD_DEVICE_ID;
> > + input_report_key(pad_input, BTN_0, (data[7] & 0x02));
> > + input_report_key(pad_input, BTN_1, (data[7] & 0x01));
> > + if (!prox)
> > + wacom->id[1] = 0;
> > + input_report_abs(pad_input, ABS_MISC, wacom->id[1]);
> > + retval = 1;
> > + }
> > + break;
> > + }
> > +
> > + /* Store current battery capacity and power supply state */
> > + if (features->type == GRAPHIRE_BT) {
> > + rw = (data[7] >> 2 & 0x07);
> > + battery_capacity = batcap_gr[rw];
> > + ps_connected = rw == 7;
> > + if ((wacom->battery_capacity != battery_capacity) ||
> > + (wacom->ps_connected != ps_connected)) {
> > + wacom->battery_capacity = battery_capacity;
> > + wacom->ps_connected = ps_connected;
> > + wacom_notify_battery(wacom);
> > + }
> > }
> > exit:
> > return retval;
> > @@ -1418,6 +1477,7 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
> >
> > case WACOM_G4:
> > case GRAPHIRE:
> > + case GRAPHIRE_BT:
> > case WACOM_MO:
> > sync = wacom_graphire_irq(wacom_wac);
> > break;
> > @@ -1654,6 +1714,27 @@ int wacom_setup_input_capabilities(struct input_dev *input_dev,
> > __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
> > break;
> >
> > + case GRAPHIRE_BT:
> > + __clear_bit(ABS_MISC, input_dev->absbit);
> > + input_set_abs_params(input_dev, ABS_DISTANCE, 0,
> > + features->distance_max,
> > + 0, 0);
> > +
> > + input_set_capability(input_dev, EV_REL, REL_WHEEL);
> > +
> > + __set_bit(BTN_LEFT, input_dev->keybit);
> > + __set_bit(BTN_RIGHT, input_dev->keybit);
> > + __set_bit(BTN_MIDDLE, input_dev->keybit);
> > +
> > + __set_bit(BTN_TOOL_RUBBER, input_dev->keybit);
> > + __set_bit(BTN_TOOL_PEN, input_dev->keybit);
> > + __set_bit(BTN_TOOL_MOUSE, input_dev->keybit);
> > + __set_bit(BTN_STYLUS, input_dev->keybit);
> > + __set_bit(BTN_STYLUS2, input_dev->keybit);
> > +
> > + __set_bit(INPUT_PROP_POINTER, input_dev->propbit);
> > + break;
> > +
> > case WACOM_24HD:
> > input_set_abs_params(input_dev, ABS_Z, -900, 899, 0, 0);
> > input_set_abs_params(input_dev, ABS_THROTTLE, 0, 71, 0, 0);
> > @@ -1848,6 +1929,11 @@ int wacom_setup_pad_input_capabilities(struct input_dev *input_dev,
> > input_set_abs_params(input_dev, ABS_Y, 0, 1, 0, 0);
> >
> > switch (features->type) {
> > + case GRAPHIRE_BT:
> > + __set_bit(BTN_0, input_dev->keybit);
> > + __set_bit(BTN_1, input_dev->keybit);
> > + break;
> > +
> > case WACOM_MO:
> > __set_bit(BTN_BACK, input_dev->keybit);
> > __set_bit(BTN_LEFT, input_dev->keybit);
> > @@ -2017,6 +2103,9 @@ static const struct wacom_features wacom_features_0x00 =
> > static const struct wacom_features wacom_features_0x10 =
> > { "Wacom Graphire", 10206, 7422, 511, 63,
> > GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
> > +static const struct wacom_features wacom_features_0x81 =
> > + { "Wacom Graphire BT", 16704, 12064, 511, 32,
> > + GRAPHIRE_BT, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
> > static const struct wacom_features wacom_features_0x11 =
> > { "Wacom Graphire2 4x5", 10206, 7422, 511, 63,
> > GRAPHIRE, WACOM_GRAPHIRE_RES, WACOM_GRAPHIRE_RES };
> > @@ -2412,6 +2501,10 @@ static const struct wacom_features wacom_features_0x309 =
> > HID_DEVICE(BUS_USB, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
> > .driver_data = (kernel_ulong_t)&wacom_features_##prod
> >
> > +#define BT_DEVICE_WACOM(prod) \
> > + HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_WACOM, USB_VENDOR_ID_WACOM, prod),\
> > + .driver_data = (kernel_ulong_t)&wacom_features_##prod
> > +
> > #define USB_DEVICE_LENOVO(prod) \
> > HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, prod), \
> > .driver_data = (kernel_ulong_t)&wacom_features_##prod
> > @@ -2469,6 +2562,7 @@ const struct hid_device_id wacom_ids[] = {
> > { USB_DEVICE_WACOM(0x69) },
> > { USB_DEVICE_WACOM(0x6A) },
> > { USB_DEVICE_WACOM(0x6B) },
> > + { BT_DEVICE_WACOM(0x81) },
> > { USB_DEVICE_WACOM(0x84) },
> > { USB_DEVICE_WACOM(0x90) },
> > { USB_DEVICE_WACOM(0x93) },
> > diff --git a/drivers/hid/wacom_wac.h b/drivers/hid/wacom_wac.h
> > index 3aa55d9..0f3df34 100644
> > --- a/drivers/hid/wacom_wac.h
> > +++ b/drivers/hid/wacom_wac.h
> > @@ -46,6 +46,7 @@
> >
> > /* wacom data packet report IDs */
> > #define WACOM_REPORT_PENABLED 2
> > +#define WACOM_REPORT_PENABLED_BT 3
> > #define WACOM_REPORT_INTUOSREAD 5
> > #define WACOM_REPORT_INTUOSWRITE 6
> > #define WACOM_REPORT_INTUOSPAD 12
> > @@ -73,6 +74,7 @@
> > enum {
> > PENPARTNER = 0,
> > GRAPHIRE,
> > + GRAPHIRE_BT,
> > WACOM_G4,
> > PTU,
> > PL,
> > --
> > 2.0.1
> >
>
> --
> Dmitry
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