Commit 72b236d6 authored by Aaron Skomra's avatar Aaron Skomra Committed by Jiri Kosina

HID: wacom: Add support for Express Key Remote.

This device is pad (buttons) only, there is no stylus or touch. Up to
five remotes can pair with the device's associated USB dongle.
Signed-off-by: default avatarAaron Skomra <aaron.skomra@wacom.com>
Reviewed-by: default avatarJason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 70ee06c5
......@@ -77,3 +77,22 @@ Description:
The format is also scrambled, like in the USB mode, and it can
be summarized by converting 76543210 into GECA6420.
HGFEDCBA HFDB7531
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_remote/unpair_remote
Date: July 2015
Contact: linux-input@vger.kernel.org
Description:
Writing the character sequence '*' followed by a newline to
this file will delete all of the current pairings on the
device. Other character sequences are reserved. This file is
write only.
What: /sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_remote/<serial_number>/remote_mode
Date: July 2015
Contact: linux-input@vger.kernel.org
Description:
Reading from this file reports the mode status of the
remote as indicated by the LED lights on the device. If no
reports have been received from the paired device, reading
from this file will report '-1'. The mode is read-only
and cannot be set through the driver.
......@@ -113,7 +113,7 @@ struct wacom {
struct mutex lock;
struct work_struct work;
struct wacom_led {
u8 select[2]; /* status led selector (0..3) */
u8 select[5]; /* status led selector (0..3) */
u8 llv; /* status led brightness no button (1..127) */
u8 hlv; /* status led brightness button pressed (1..127) */
u8 img_lum; /* OLED matrix display brightness */
......@@ -123,6 +123,8 @@ struct wacom {
struct power_supply *ac;
struct power_supply_desc battery_desc;
struct power_supply_desc ac_desc;
struct kobject *remote_dir;
struct attribute_group remote_group[5];
};
static inline void wacom_schedule_work(struct wacom_wac *wacom_wac)
......@@ -147,4 +149,7 @@ int wacom_wac_event(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value);
void wacom_wac_report(struct hid_device *hdev, struct hid_report *report);
void wacom_battery_work(struct work_struct *work);
int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial,
int index);
void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial);
#endif
......@@ -23,9 +23,13 @@
#define WAC_CMD_ICON_XFER 0x23
#define WAC_CMD_ICON_BT_XFER 0x26
#define WAC_CMD_RETRIES 10
#define WAC_CMD_DELETE_PAIRING 0x20
#define WAC_CMD_UNPAIR_ALL 0xFF
#define WAC_REMOTE_SERIAL_MAX_STRLEN 9
#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
#define DEV_ATTR_RO_PERM (S_IRUSR | S_IRGRP)
static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
size_t size, unsigned int retries)
......@@ -1119,6 +1123,189 @@ static ssize_t wacom_store_speed(struct device *dev,
static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
wacom_show_speed, wacom_store_speed);
static ssize_t wacom_show_remote_mode(struct kobject *kobj,
struct kobj_attribute *kattr,
char *buf, int index)
{
struct device *dev = container_of(kobj->parent, struct device, kobj);
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct wacom *wacom = hid_get_drvdata(hdev);
u8 mode;
mode = wacom->led.select[index];
if (mode >= 0 && mode < 3)
return snprintf(buf, PAGE_SIZE, "%d\n", mode);
else
return snprintf(buf, PAGE_SIZE, "%d\n", -1);
}
#define DEVICE_EKR_ATTR_GROUP(SET_ID) \
static ssize_t wacom_show_remote##SET_ID##_mode(struct kobject *kobj, \
struct kobj_attribute *kattr, char *buf) \
{ \
return wacom_show_remote_mode(kobj, kattr, buf, SET_ID); \
} \
static struct kobj_attribute remote##SET_ID##_mode_attr = { \
.attr = {.name = "remote_mode", \
.mode = DEV_ATTR_RO_PERM}, \
.show = wacom_show_remote##SET_ID##_mode, \
}; \
static struct attribute *remote##SET_ID##_serial_attrs[] = { \
&remote##SET_ID##_mode_attr.attr, \
NULL \
}; \
static struct attribute_group remote##SET_ID##_serial_group = { \
.name = NULL, \
.attrs = remote##SET_ID##_serial_attrs, \
}
DEVICE_EKR_ATTR_GROUP(0);
DEVICE_EKR_ATTR_GROUP(1);
DEVICE_EKR_ATTR_GROUP(2);
DEVICE_EKR_ATTR_GROUP(3);
DEVICE_EKR_ATTR_GROUP(4);
int wacom_remote_create_attr_group(struct wacom *wacom, __u32 serial, int index)
{
int error = 0;
char *buf;
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
wacom_wac->serial[index] = serial;
buf = kzalloc(WAC_REMOTE_SERIAL_MAX_STRLEN, GFP_KERNEL);
if (!buf)
return -ENOMEM;
snprintf(buf, WAC_REMOTE_SERIAL_MAX_STRLEN, "%d", serial);
wacom->remote_group[index].name = buf;
error = sysfs_create_group(wacom->remote_dir,
&wacom->remote_group[index]);
if (error) {
hid_err(wacom->hdev,
"cannot create sysfs group err: %d\n", error);
kobject_put(wacom->remote_dir);
return error;
}
return 0;
}
void wacom_remote_destroy_attr_group(struct wacom *wacom, __u32 serial)
{
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
int i;
if (!serial)
return;
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
if (wacom_wac->serial[i] == serial) {
wacom_wac->serial[i] = 0;
wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
if (wacom->remote_group[i].name) {
sysfs_remove_group(wacom->remote_dir,
&wacom->remote_group[i]);
kfree(wacom->remote_group[i].name);
wacom->remote_group[i].name = NULL;
}
}
}
}
static int wacom_cmd_unpair_remote(struct wacom *wacom, unsigned char selector)
{
const size_t buf_size = 2;
unsigned char *buf;
int retval;
buf = kzalloc(buf_size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
buf[0] = WAC_CMD_DELETE_PAIRING;
buf[1] = selector;
retval = wacom_set_report(wacom->hdev, HID_OUTPUT_REPORT, buf,
buf_size, WAC_CMD_RETRIES);
kfree(buf);
return retval;
}
static ssize_t wacom_store_unpair_remote(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t count)
{
unsigned char selector = 0;
struct device *dev = container_of(kobj->parent, struct device, kobj);
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct wacom *wacom = hid_get_drvdata(hdev);
int err;
if (!strncmp(buf, "*\n", 2)) {
selector = WAC_CMD_UNPAIR_ALL;
} else {
hid_info(wacom->hdev, "remote: unrecognized unpair code: %s\n",
buf);
return -1;
}
mutex_lock(&wacom->lock);
err = wacom_cmd_unpair_remote(wacom, selector);
mutex_unlock(&wacom->lock);
return err < 0 ? err : count;
}
static struct kobj_attribute unpair_remote_attr = {
.attr = {.name = "unpair_remote", .mode = 0200},
.store = wacom_store_unpair_remote,
};
static const struct attribute *remote_unpair_attrs[] = {
&unpair_remote_attr.attr,
NULL
};
static int wacom_initialize_remote(struct wacom *wacom)
{
int error = 0;
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
int i;
if (wacom->wacom_wac.features.type != REMOTE)
return 0;
wacom->remote_group[0] = remote0_serial_group;
wacom->remote_group[1] = remote1_serial_group;
wacom->remote_group[2] = remote2_serial_group;
wacom->remote_group[3] = remote3_serial_group;
wacom->remote_group[4] = remote4_serial_group;
wacom->remote_dir = kobject_create_and_add("wacom_remote",
&wacom->hdev->dev.kobj);
if (!wacom->remote_dir)
return -ENOMEM;
error = sysfs_create_files(wacom->remote_dir, remote_unpair_attrs);
if (error) {
hid_err(wacom->hdev,
"cannot create sysfs group err: %d\n", error);
return error;
}
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
wacom->led.select[i] = WACOM_STATUS_UNKNOWN;
wacom_wac->serial[i] = 0;
}
return 0;
}
static struct input_dev *wacom_allocate_input(struct wacom *wacom)
{
struct input_dev *input_dev;
......@@ -1164,6 +1351,8 @@ static void wacom_clean_inputs(struct wacom *wacom)
else
input_free_device(wacom->wacom_wac.pad_input);
}
if (wacom->remote_dir)
kobject_put(wacom->remote_dir);
wacom->wacom_wac.pen_input = NULL;
wacom->wacom_wac.touch_input = NULL;
wacom->wacom_wac.pad_input = NULL;
......@@ -1243,10 +1432,16 @@ static int wacom_register_inputs(struct wacom *wacom)
error = wacom_initialize_leds(wacom);
if (error)
goto fail_leds;
error = wacom_initialize_remote(wacom);
if (error)
goto fail_remote;
}
return 0;
fail_remote:
wacom_destroy_leds(wacom);
fail_leds:
input_unregister_device(pad_input_dev);
pad_input_dev = NULL;
......
......@@ -631,6 +631,130 @@ static int wacom_intuos_inout(struct wacom_wac *wacom)
return 0;
}
static int wacom_remote_irq(struct wacom_wac *wacom_wac, size_t len)
{
unsigned char *data = wacom_wac->data;
struct input_dev *input = wacom_wac->pad_input;
struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
struct wacom_features *features = &wacom_wac->features;
int bat_charging, bat_percent, touch_ring_mode;
__u32 serial;
int i;
if (data[0] != WACOM_REPORT_REMOTE) {
dev_dbg(input->dev.parent,
"%s: received unknown report #%d", __func__, data[0]);
return 0;
}
serial = data[3] + (data[4] << 8) + (data[5] << 16);
wacom_wac->id[0] = PAD_DEVICE_ID;
input_report_key(input, BTN_0, (data[9] & 0x01));
input_report_key(input, BTN_1, (data[9] & 0x02));
input_report_key(input, BTN_2, (data[9] & 0x04));
input_report_key(input, BTN_3, (data[9] & 0x08));
input_report_key(input, BTN_4, (data[9] & 0x10));
input_report_key(input, BTN_5, (data[9] & 0x20));
input_report_key(input, BTN_6, (data[9] & 0x40));
input_report_key(input, BTN_7, (data[9] & 0x80));
input_report_key(input, BTN_8, (data[10] & 0x01));
input_report_key(input, BTN_9, (data[10] & 0x02));
input_report_key(input, BTN_A, (data[10] & 0x04));
input_report_key(input, BTN_B, (data[10] & 0x08));
input_report_key(input, BTN_C, (data[10] & 0x10));
input_report_key(input, BTN_X, (data[10] & 0x20));
input_report_key(input, BTN_Y, (data[10] & 0x40));
input_report_key(input, BTN_Z, (data[10] & 0x80));
input_report_key(input, BTN_BASE, (data[11] & 0x01));
input_report_key(input, BTN_BASE2, (data[11] & 0x02));
if (data[12] & 0x80)
input_report_abs(input, ABS_WHEEL, (data[12] & 0x7f));
else
input_report_abs(input, ABS_WHEEL, 0);
bat_percent = data[7] & 0x7f;
bat_charging = !!(data[7] & 0x80);
if (data[9] | data[10] | (data[11] & 0x03) | data[12])
input_report_abs(input, ABS_MISC, PAD_DEVICE_ID);
else
input_report_abs(input, ABS_MISC, 0);
input_event(input, EV_MSC, MSC_SERIAL, serial);
/*Which mode select (LED light) is currently on?*/
touch_ring_mode = (data[11] & 0xC0) >> 6;
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
if (wacom_wac->serial[i] == serial)
wacom->led.select[i] = touch_ring_mode;
}
if (!wacom->battery &&
!(features->quirks & WACOM_QUIRK_BATTERY)) {
features->quirks |= WACOM_QUIRK_BATTERY;
INIT_WORK(&wacom->work, wacom_battery_work);
wacom_schedule_work(wacom_wac);
}
wacom_notify_battery(wacom_wac, bat_percent, bat_charging, 1,
bat_charging);
return 1;
}
static int wacom_remote_status_irq(struct wacom_wac *wacom_wac, size_t len)
{
struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac);
unsigned char *data = wacom_wac->data;
int i;
if (data[0] != WACOM_REPORT_DEVICE_LIST)
return 0;
for (i = 0; i < WACOM_MAX_REMOTES; i++) {
int j = i * 6;
int serial = (data[j+6] << 16) + (data[j+5] << 8) + data[j+4];
bool connected = data[j+2];
if (connected) {
int k;
if (wacom_wac->serial[i] == serial)
continue;
if (wacom_wac->serial[i]) {
wacom_remote_destroy_attr_group(wacom,
wacom_wac->serial[i]);
}
/* A remote can pair more than once with an EKR,
* check to make sure this serial isn't already paired.
*/
for (k = 0; k < WACOM_MAX_REMOTES; k++) {
if (wacom_wac->serial[k] == serial)
break;
}
if (k < WACOM_MAX_REMOTES) {
wacom_wac->serial[i] = serial;
continue;
}
wacom_remote_create_attr_group(wacom, serial, i);
} else if (wacom_wac->serial[i]) {
wacom_remote_destroy_attr_group(wacom,
wacom_wac->serial[i]);
}
}
return 0;
}
static void wacom_intuos_general(struct wacom_wac *wacom)
{
struct wacom_features *features = &wacom->features;
......@@ -2191,6 +2315,13 @@ void wacom_wac_irq(struct wacom_wac *wacom_wac, size_t len)
sync = wacom_wireless_irq(wacom_wac, len);
break;
case REMOTE:
if (wacom_wac->data[0] == WACOM_REPORT_DEVICE_LIST)
sync = wacom_remote_status_irq(wacom_wac, len);
else
sync = wacom_remote_irq(wacom_wac, len);
break;
default:
sync = false;
break;
......@@ -2298,6 +2429,9 @@ void wacom_setup_device_quirks(struct wacom *wacom)
if (features->type == BAMBOO_PAD)
features->device_type = WACOM_DEVICETYPE_TOUCH;
if (features->type == REMOTE)
features->device_type = WACOM_DEVICETYPE_PAD;
if (wacom->hdev->bus == BUS_BLUETOOTH)
features->quirks |= WACOM_QUIRK_BATTERY;
......@@ -2717,6 +2851,11 @@ int wacom_setup_pad_input_capabilities(struct input_dev *input_dev,
break;
case REMOTE:
input_set_capability(input_dev, EV_MSC, MSC_SERIAL);
input_set_abs_params(input_dev, ABS_WHEEL, 0, 71, 0, 0);
break;
default:
/* no pad supported */
return -ENODEV;
......@@ -3186,6 +3325,10 @@ static const struct wacom_features wacom_features_0x323 =
{ "Wacom Intuos P M", 21600, 13500, 1023, 31,
INTUOSHT, WACOM_INTUOS_RES, WACOM_INTUOS_RES,
.check_for_hid_type = true, .hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_0x331 =
{ "Wacom Express Key Remote", 0, 0, 0, 0,
REMOTE, 0, 0, 18, .check_for_hid_type = true,
.hid_type = HID_TYPE_USBNONE };
static const struct wacom_features wacom_features_HID_ANY_ID =
{ "Wacom HID", .type = HID_GENERIC };
......@@ -3341,6 +3484,7 @@ const struct hid_device_id wacom_ids[] = {
{ USB_DEVICE_WACOM(0x32B) },
{ USB_DEVICE_WACOM(0x32C) },
{ USB_DEVICE_WACOM(0x32F) },
{ USB_DEVICE_WACOM(0x331) },
{ USB_DEVICE_WACOM(0x333) },
{ USB_DEVICE_WACOM(0x335) },
{ USB_DEVICE_WACOM(0x336) },
......
......@@ -16,6 +16,8 @@
#define WACOM_PKGLEN_MAX 192
#define WACOM_NAME_MAX 64
#define WACOM_MAX_REMOTES 5
#define WACOM_STATUS_UNKNOWN 255
/* packet length for individual models */
#define WACOM_PKGLEN_BBFUN 9
......@@ -65,6 +67,8 @@
#define WACOM_REPORT_USB 192
#define WACOM_REPORT_BPAD_PEN 3
#define WACOM_REPORT_BPAD_TOUCH 16
#define WACOM_REPORT_DEVICE_LIST 16
#define WACOM_REPORT_REMOTE 17
/* device quirks */
#define WACOM_QUIRK_BBTOUCH_LOWRES 0x0001
......@@ -129,6 +133,7 @@ enum {
WACOM_24HDT,
WACOM_27QHDT,
BAMBOO_PAD,
REMOTE,
TABLETPC, /* add new TPC below */
TABLETPCE,
TABLETPC2FG,
......@@ -208,7 +213,7 @@ struct wacom_wac {
unsigned char data[WACOM_PKGLEN_MAX];
int tool[2];
int id[2];
__u32 serial[2];
__u32 serial[5];
bool reporting_data;
struct wacom_features features;
struct wacom_shared *shared;
......
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