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OpenCloudOS-Kernel/drivers/hid/wacom_sys.c

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/*
* drivers/input/tablet/wacom_sys.c
*
* USB Wacom tablet support - system specific code
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include "wacom_wac.h"
#include "wacom.h"
#include <linux/input/mt.h>
#define WAC_MSG_RETRIES 5
#define WAC_CMD_WL_LED_CONTROL 0x03
#define WAC_CMD_LED_CONTROL 0x20
#define WAC_CMD_ICON_START 0x21
#define WAC_CMD_ICON_XFER 0x23
#define WAC_CMD_ICON_BT_XFER 0x26
#define WAC_CMD_RETRIES 10
#define DEV_ATTR_RW_PERM (S_IRUGO | S_IWUSR | S_IWGRP)
#define DEV_ATTR_WO_PERM (S_IWUSR | S_IWGRP)
static int wacom_get_report(struct hid_device *hdev, u8 type, u8 *buf,
size_t size, unsigned int retries)
{
int retval;
do {
retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
HID_REQ_GET_REPORT);
} while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
return retval;
}
static int wacom_set_report(struct hid_device *hdev, u8 type, u8 *buf,
size_t size, unsigned int retries)
{
int retval;
do {
retval = hid_hw_raw_request(hdev, buf[0], buf, size, type,
HID_REQ_SET_REPORT);
} while ((retval == -ETIMEDOUT || retval == -EPIPE) && --retries);
return retval;
}
static int wacom_raw_event(struct hid_device *hdev, struct hid_report *report,
u8 *raw_data, int size)
{
struct wacom *wacom = hid_get_drvdata(hdev);
if (size > WACOM_PKGLEN_MAX)
return 1;
memcpy(wacom->wacom_wac.data, raw_data, size);
wacom_wac_irq(&wacom->wacom_wac, size);
return 0;
}
static int wacom_open(struct input_dev *dev)
{
struct wacom *wacom = input_get_drvdata(dev);
return hid_hw_open(wacom->hdev);
}
static void wacom_close(struct input_dev *dev)
{
struct wacom *wacom = input_get_drvdata(dev);
hid_hw_close(wacom->hdev);
}
/*
* Calculate the resolution of the X or Y axis using hidinput_calc_abs_res.
*/
static int wacom_calc_hid_res(int logical_extents, int physical_extents,
unsigned unit, int exponent)
{
struct hid_field field = {
.logical_maximum = logical_extents,
.physical_maximum = physical_extents,
.unit = unit,
.unit_exponent = exponent,
};
return hidinput_calc_abs_res(&field, ABS_X);
}
static void wacom_feature_mapping(struct hid_device *hdev,
struct hid_field *field, struct hid_usage *usage)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_features *features = &wacom->wacom_wac.features;
struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
u8 *data;
int ret;
switch (usage->hid) {
case HID_DG_CONTACTMAX:
/* leave touch_max as is if predefined */
if (!features->touch_max) {
/* read manually */
data = kzalloc(2, GFP_KERNEL);
if (!data)
break;
data[0] = field->report->id;
ret = wacom_get_report(hdev, HID_FEATURE_REPORT,
data, 2, 0);
if (ret == 2)
features->touch_max = data[1];
kfree(data);
}
break;
case HID_DG_INPUTMODE:
/* Ignore if value index is out of bounds. */
if (usage->usage_index >= field->report_count) {
dev_err(&hdev->dev, "HID_DG_INPUTMODE out of range\n");
break;
}
hid_data->inputmode = field->report->id;
hid_data->inputmode_index = usage->usage_index;
break;
}
}
/*
* Interface Descriptor of wacom devices can be incomplete and
* inconsistent so wacom_features table is used to store stylus
* device's packet lengths, various maximum values, and tablet
* resolution based on product ID's.
*
* For devices that contain 2 interfaces, wacom_features table is
* inaccurate for the touch interface. Since the Interface Descriptor
* for touch interfaces has pretty complete data, this function exists
* to query tablet for this missing information instead of hard coding in
* an additional table.
*
* A typical Interface Descriptor for a stylus will contain a
* boot mouse application collection that is not of interest and this
* function will ignore it.
*
* It also contains a digitizer application collection that also is not
* of interest since any information it contains would be duplicate
* of what is in wacom_features. Usually it defines a report of an array
* of bytes that could be used as max length of the stylus packet returned.
* If it happens to define a Digitizer-Stylus Physical Collection then
* the X and Y logical values contain valid data but it is ignored.
*
* A typical Interface Descriptor for a touch interface will contain a
* Digitizer-Finger Physical Collection which will define both logical
* X/Y maximum as well as the physical size of tablet. Since touch
* interfaces haven't supported pressure or distance, this is enough
* information to override invalid values in the wacom_features table.
*
* Intuos5 touch interface and 3rd gen Bamboo Touch do not contain useful
* data. We deal with them after returning from this function.
*/
static void wacom_usage_mapping(struct hid_device *hdev,
struct hid_field *field, struct hid_usage *usage)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_features *features = &wacom->wacom_wac.features;
bool finger = WACOM_FINGER_FIELD(field);
bool pen = WACOM_PEN_FIELD(field);
/*
* Requiring Stylus Usage will ignore boot mouse
* X/Y values and some cases of invalid Digitizer X/Y
* values commonly reported.
*/
if (!pen && !finger)
return;
/*
* Bamboo models do not support HID_DG_CONTACTMAX.
* And, Bamboo Pen only descriptor contains touch.
*/
if (features->type != BAMBOO_PT) {
/* ISDv4 touch devices at least supports one touch point */
if (finger && !features->touch_max)
features->touch_max = 1;
}
switch (usage->hid) {
case HID_GD_X:
features->x_max = field->logical_maximum;
if (finger) {
features->device_type = BTN_TOOL_FINGER;
features->x_phy = field->physical_maximum;
if (features->type != BAMBOO_PT) {
features->unit = field->unit;
features->unitExpo = field->unit_exponent;
}
} else {
features->device_type = BTN_TOOL_PEN;
}
break;
case HID_GD_Y:
features->y_max = field->logical_maximum;
if (finger) {
features->y_phy = field->physical_maximum;
if (features->type != BAMBOO_PT) {
features->unit = field->unit;
features->unitExpo = field->unit_exponent;
}
}
break;
case HID_DG_TIPPRESSURE:
if (pen)
features->pressure_max = field->logical_maximum;
break;
}
if (features->type == HID_GENERIC)
wacom_wac_usage_mapping(hdev, field, usage);
}
static void wacom_post_parse_hid(struct hid_device *hdev,
struct wacom_features *features)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
if (features->type == HID_GENERIC) {
/* Any last-minute generic device setup */
if (features->touch_max > 1) {
input_mt_init_slots(wacom_wac->input, wacom_wac->features.touch_max,
INPUT_MT_DIRECT);
}
}
}
static void wacom_parse_hid(struct hid_device *hdev,
struct wacom_features *features)
{
struct hid_report_enum *rep_enum;
struct hid_report *hreport;
int i, j;
/* check features first */
rep_enum = &hdev->report_enum[HID_FEATURE_REPORT];
list_for_each_entry(hreport, &rep_enum->report_list, list) {
for (i = 0; i < hreport->maxfield; i++) {
/* Ignore if report count is out of bounds. */
if (hreport->field[i]->report_count < 1)
continue;
for (j = 0; j < hreport->field[i]->maxusage; j++) {
wacom_feature_mapping(hdev, hreport->field[i],
hreport->field[i]->usage + j);
}
}
}
/* now check the input usages */
rep_enum = &hdev->report_enum[HID_INPUT_REPORT];
list_for_each_entry(hreport, &rep_enum->report_list, list) {
if (!hreport->maxfield)
continue;
for (i = 0; i < hreport->maxfield; i++)
for (j = 0; j < hreport->field[i]->maxusage; j++)
wacom_usage_mapping(hdev, hreport->field[i],
hreport->field[i]->usage + j);
}
wacom_post_parse_hid(hdev, features);
}
static int wacom_hid_set_device_mode(struct hid_device *hdev)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct hid_data *hid_data = &wacom->wacom_wac.hid_data;
struct hid_report *r;
struct hid_report_enum *re;
if (hid_data->inputmode < 0)
return 0;
re = &(hdev->report_enum[HID_FEATURE_REPORT]);
r = re->report_id_hash[hid_data->inputmode];
if (r) {
r->field[0]->value[hid_data->inputmode_index] = 2;
hid_hw_request(hdev, r, HID_REQ_SET_REPORT);
}
return 0;
}
static int wacom_set_device_mode(struct hid_device *hdev, int report_id,
int length, int mode)
{
unsigned char *rep_data;
int error = -ENOMEM, limit = 0;
rep_data = kzalloc(length, GFP_KERNEL);
if (!rep_data)
return error;
do {
rep_data[0] = report_id;
rep_data[1] = mode;
error = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data,
length, 1);
if (error >= 0)
error = wacom_get_report(hdev, HID_FEATURE_REPORT,
rep_data, length, 1);
} while ((error < 0 || rep_data[1] != mode) && limit++ < WAC_MSG_RETRIES);
kfree(rep_data);
return error < 0 ? error : 0;
}
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 ret;
u8 rep_data[2];
switch (features->type) {
case GRAPHIRE_BT:
rep_data[0] = 0x03;
rep_data[1] = 0x00;
ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
3);
if (ret >= 0) {
rep_data[0] = speed == 0 ? 0x05 : 0x06;
rep_data[1] = 0x00;
ret = wacom_set_report(hdev, HID_FEATURE_REPORT,
rep_data, 2, 3);
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;
case INTUOS4WL:
if (speed == 1)
wacom->wacom_wac.bt_features &= ~0x20;
else
wacom->wacom_wac.bt_features |= 0x20;
rep_data[0] = 0x03;
rep_data[1] = wacom->wacom_wac.bt_features;
ret = wacom_set_report(hdev, HID_FEATURE_REPORT, rep_data, 2,
1);
if (ret >= 0)
wacom->wacom_wac.bt_high_speed = speed;
break;
}
return 0;
}
/*
* Switch the tablet into its most-capable mode. Wacom tablets are
* typically configured to power-up in a mode which sends mouse-like
* reports to the OS. To get absolute position, pressure data, etc.
* from the tablet, it is necessary to switch the tablet out of this
* mode and into one which sends the full range of tablet data.
*/
static int wacom_query_tablet_data(struct hid_device *hdev,
struct wacom_features *features)
{
if (hdev->bus == BUS_BLUETOOTH)
return wacom_bt_query_tablet_data(hdev, 1, features);
if (features->type == HID_GENERIC)
return wacom_hid_set_device_mode(hdev);
if (features->device_type == BTN_TOOL_FINGER) {
if (features->type > TABLETPC) {
/* MT Tablet PC touch */
return wacom_set_device_mode(hdev, 3, 4, 4);
}
else if (features->type == WACOM_24HDT || features->type == CINTIQ_HYBRID) {
return wacom_set_device_mode(hdev, 18, 3, 2);
}
else if (features->type == WACOM_27QHDT) {
return wacom_set_device_mode(hdev, 131, 3, 2);
}
} else if (features->device_type == BTN_TOOL_PEN) {
if (features->type <= BAMBOO_PT && features->type != WIRELESS) {
return wacom_set_device_mode(hdev, 2, 2, 2);
}
}
return 0;
}
static void wacom_retrieve_hid_descriptor(struct hid_device *hdev,
struct wacom_features *features)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct usb_interface *intf = wacom->intf;
/* default features */
features->device_type = BTN_TOOL_PEN;
features->x_fuzz = 4;
features->y_fuzz = 4;
features->pressure_fuzz = 0;
features->distance_fuzz = 0;
/*
* The wireless device HID is basic and layout conflicts with
* other tablets (monitor and touch interface can look like pen).
* Skip the query for this type and modify defaults based on
* interface number.
*/
if (features->type == WIRELESS) {
if (intf->cur_altsetting->desc.bInterfaceNumber == 0) {
features->device_type = 0;
} else if (intf->cur_altsetting->desc.bInterfaceNumber == 2) {
features->device_type = BTN_TOOL_FINGER;
features->pktlen = WACOM_PKGLEN_BBTOUCH3;
}
}
/* only devices that support touch need to retrieve the info */
if (features->type < BAMBOO_PT)
return;
wacom_parse_hid(hdev, features);
}
struct wacom_hdev_data {
struct list_head list;
struct kref kref;
struct hid_device *dev;
struct wacom_shared shared;
};
static LIST_HEAD(wacom_udev_list);
static DEFINE_MUTEX(wacom_udev_list_lock);
static bool wacom_are_sibling(struct hid_device *hdev,
struct hid_device *sibling)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_features *features = &wacom->wacom_wac.features;
int vid = features->oVid;
int pid = features->oPid;
int n1,n2;
if (vid == 0 && pid == 0) {
vid = hdev->vendor;
pid = hdev->product;
}
if (vid != sibling->vendor || pid != sibling->product)
return false;
/* Compare the physical path. */
n1 = strrchr(hdev->phys, '.') - hdev->phys;
n2 = strrchr(sibling->phys, '.') - sibling->phys;
if (n1 != n2 || n1 <= 0 || n2 <= 0)
return false;
return !strncmp(hdev->phys, sibling->phys, n1);
}
static struct wacom_hdev_data *wacom_get_hdev_data(struct hid_device *hdev)
{
struct wacom_hdev_data *data;
list_for_each_entry(data, &wacom_udev_list, list) {
if (wacom_are_sibling(hdev, data->dev)) {
kref_get(&data->kref);
return data;
}
}
return NULL;
}
static int wacom_add_shared_data(struct hid_device *hdev)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
struct wacom_hdev_data *data;
int retval = 0;
mutex_lock(&wacom_udev_list_lock);
data = wacom_get_hdev_data(hdev);
if (!data) {
data = kzalloc(sizeof(struct wacom_hdev_data), GFP_KERNEL);
if (!data) {
retval = -ENOMEM;
goto out;
}
kref_init(&data->kref);
data->dev = hdev;
list_add_tail(&data->list, &wacom_udev_list);
}
wacom_wac->shared = &data->shared;
out:
mutex_unlock(&wacom_udev_list_lock);
return retval;
}
static void wacom_release_shared_data(struct kref *kref)
{
struct wacom_hdev_data *data =
container_of(kref, struct wacom_hdev_data, kref);
mutex_lock(&wacom_udev_list_lock);
list_del(&data->list);
mutex_unlock(&wacom_udev_list_lock);
kfree(data);
}
static void wacom_remove_shared_data(struct wacom_wac *wacom)
{
struct wacom_hdev_data *data;
if (wacom->shared) {
data = container_of(wacom->shared, struct wacom_hdev_data, shared);
kref_put(&data->kref, wacom_release_shared_data);
wacom->shared = NULL;
}
}
static int wacom_led_control(struct wacom *wacom)
{
unsigned char *buf;
int retval;
unsigned char report_id = WAC_CMD_LED_CONTROL;
int buf_size = 9;
if (wacom->wacom_wac.pid) { /* wireless connected */
report_id = WAC_CMD_WL_LED_CONTROL;
buf_size = 13;
}
buf = kzalloc(buf_size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
if (wacom->wacom_wac.features.type >= INTUOS5S &&
wacom->wacom_wac.features.type <= INTUOSPL) {
/*
* Touch Ring and crop mark LED luminance may take on
* one of four values:
* 0 = Low; 1 = Medium; 2 = High; 3 = Off
*/
int ring_led = wacom->led.select[0] & 0x03;
int ring_lum = (((wacom->led.llv & 0x60) >> 5) - 1) & 0x03;
int crop_lum = 0;
unsigned char led_bits = (crop_lum << 4) | (ring_lum << 2) | (ring_led);
buf[0] = report_id;
if (wacom->wacom_wac.pid) {
wacom_get_report(wacom->hdev, HID_FEATURE_REPORT,
buf, buf_size, WAC_CMD_RETRIES);
buf[0] = report_id;
buf[4] = led_bits;
} else
buf[1] = led_bits;
}
else {
int led = wacom->led.select[0] | 0x4;
if (wacom->wacom_wac.features.type == WACOM_21UX2 ||
wacom->wacom_wac.features.type == WACOM_24HD)
led |= (wacom->led.select[1] << 4) | 0x40;
buf[0] = report_id;
buf[1] = led;
buf[2] = wacom->led.llv;
buf[3] = wacom->led.hlv;
buf[4] = wacom->led.img_lum;
}
retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, buf_size,
WAC_CMD_RETRIES);
kfree(buf);
return retval;
}
static int wacom_led_putimage(struct wacom *wacom, int button_id, u8 xfer_id,
const unsigned len, const void *img)
{
unsigned char *buf;
int i, retval;
const unsigned chunk_len = len / 4; /* 4 chunks are needed to be sent */
buf = kzalloc(chunk_len + 3 , GFP_KERNEL);
if (!buf)
return -ENOMEM;
/* Send 'start' command */
buf[0] = WAC_CMD_ICON_START;
buf[1] = 1;
retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
WAC_CMD_RETRIES);
if (retval < 0)
goto out;
buf[0] = xfer_id;
buf[1] = button_id & 0x07;
for (i = 0; i < 4; i++) {
buf[2] = i;
memcpy(buf + 3, img + i * chunk_len, chunk_len);
retval = wacom_set_report(wacom->hdev, HID_FEATURE_REPORT,
buf, chunk_len + 3, WAC_CMD_RETRIES);
if (retval < 0)
break;
}
/* Send 'stop' */
buf[0] = WAC_CMD_ICON_START;
buf[1] = 0;
wacom_set_report(wacom->hdev, HID_FEATURE_REPORT, buf, 2,
WAC_CMD_RETRIES);
out:
kfree(buf);
return retval;
}
static ssize_t wacom_led_select_store(struct device *dev, int set_id,
const char *buf, size_t count)
{
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct wacom *wacom = hid_get_drvdata(hdev);
unsigned int id;
int err;
err = kstrtouint(buf, 10, &id);
if (err)
return err;
mutex_lock(&wacom->lock);
wacom->led.select[set_id] = id & 0x3;
err = wacom_led_control(wacom);
mutex_unlock(&wacom->lock);
return err < 0 ? err : count;
}
#define DEVICE_LED_SELECT_ATTR(SET_ID) \
static ssize_t wacom_led##SET_ID##_select_store(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
{ \
return wacom_led_select_store(dev, SET_ID, buf, count); \
} \
static ssize_t wacom_led##SET_ID##_select_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
struct wacom *wacom = hid_get_drvdata(hdev); \
return scnprintf(buf, PAGE_SIZE, "%d\n", \
wacom->led.select[SET_ID]); \
} \
static DEVICE_ATTR(status_led##SET_ID##_select, DEV_ATTR_RW_PERM, \
wacom_led##SET_ID##_select_show, \
wacom_led##SET_ID##_select_store)
DEVICE_LED_SELECT_ATTR(0);
DEVICE_LED_SELECT_ATTR(1);
static ssize_t wacom_luminance_store(struct wacom *wacom, u8 *dest,
const char *buf, size_t count)
{
unsigned int value;
int err;
err = kstrtouint(buf, 10, &value);
if (err)
return err;
mutex_lock(&wacom->lock);
*dest = value & 0x7f;
err = wacom_led_control(wacom);
mutex_unlock(&wacom->lock);
return err < 0 ? err : count;
}
#define DEVICE_LUMINANCE_ATTR(name, field) \
static ssize_t wacom_##name##_luminance_store(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
{ \
struct hid_device *hdev = container_of(dev, struct hid_device, dev);\
struct wacom *wacom = hid_get_drvdata(hdev); \
\
return wacom_luminance_store(wacom, &wacom->led.field, \
buf, count); \
} \
static ssize_t wacom_##name##_luminance_show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
struct wacom *wacom = dev_get_drvdata(dev); \
return scnprintf(buf, PAGE_SIZE, "%d\n", wacom->led.field); \
} \
static DEVICE_ATTR(name##_luminance, DEV_ATTR_RW_PERM, \
wacom_##name##_luminance_show, \
wacom_##name##_luminance_store)
DEVICE_LUMINANCE_ATTR(status0, llv);
DEVICE_LUMINANCE_ATTR(status1, hlv);
DEVICE_LUMINANCE_ATTR(buttons, img_lum);
static ssize_t wacom_button_image_store(struct device *dev, int button_id,
const char *buf, size_t count)
{
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct wacom *wacom = hid_get_drvdata(hdev);
int err;
unsigned len;
u8 xfer_id;
if (hdev->bus == BUS_BLUETOOTH) {
len = 256;
xfer_id = WAC_CMD_ICON_BT_XFER;
} else {
len = 1024;
xfer_id = WAC_CMD_ICON_XFER;
}
if (count != len)
return -EINVAL;
mutex_lock(&wacom->lock);
err = wacom_led_putimage(wacom, button_id, xfer_id, len, buf);
mutex_unlock(&wacom->lock);
return err < 0 ? err : count;
}
#define DEVICE_BTNIMG_ATTR(BUTTON_ID) \
static ssize_t wacom_btnimg##BUTTON_ID##_store(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
{ \
return wacom_button_image_store(dev, BUTTON_ID, buf, count); \
} \
static DEVICE_ATTR(button##BUTTON_ID##_rawimg, DEV_ATTR_WO_PERM, \
NULL, wacom_btnimg##BUTTON_ID##_store)
DEVICE_BTNIMG_ATTR(0);
DEVICE_BTNIMG_ATTR(1);
DEVICE_BTNIMG_ATTR(2);
DEVICE_BTNIMG_ATTR(3);
DEVICE_BTNIMG_ATTR(4);
DEVICE_BTNIMG_ATTR(5);
DEVICE_BTNIMG_ATTR(6);
DEVICE_BTNIMG_ATTR(7);
static struct attribute *cintiq_led_attrs[] = {
&dev_attr_status_led0_select.attr,
&dev_attr_status_led1_select.attr,
NULL
};
static struct attribute_group cintiq_led_attr_group = {
.name = "wacom_led",
.attrs = cintiq_led_attrs,
};
static struct attribute *intuos4_led_attrs[] = {
&dev_attr_status0_luminance.attr,
&dev_attr_status1_luminance.attr,
&dev_attr_status_led0_select.attr,
&dev_attr_buttons_luminance.attr,
&dev_attr_button0_rawimg.attr,
&dev_attr_button1_rawimg.attr,
&dev_attr_button2_rawimg.attr,
&dev_attr_button3_rawimg.attr,
&dev_attr_button4_rawimg.attr,
&dev_attr_button5_rawimg.attr,
&dev_attr_button6_rawimg.attr,
&dev_attr_button7_rawimg.attr,
NULL
};
static struct attribute_group intuos4_led_attr_group = {
.name = "wacom_led",
.attrs = intuos4_led_attrs,
};
static struct attribute *intuos5_led_attrs[] = {
&dev_attr_status0_luminance.attr,
&dev_attr_status_led0_select.attr,
NULL
};
static struct attribute_group intuos5_led_attr_group = {
.name = "wacom_led",
.attrs = intuos5_led_attrs,
};
static int wacom_initialize_leds(struct wacom *wacom)
{
int error;
/* Initialize default values */
switch (wacom->wacom_wac.features.type) {
case INTUOS4S:
case INTUOS4:
case INTUOS4WL:
case INTUOS4L:
wacom->led.select[0] = 0;
wacom->led.select[1] = 0;
wacom->led.llv = 10;
wacom->led.hlv = 20;
wacom->led.img_lum = 10;
error = sysfs_create_group(&wacom->hdev->dev.kobj,
&intuos4_led_attr_group);
break;
case WACOM_24HD:
case WACOM_21UX2:
wacom->led.select[0] = 0;
wacom->led.select[1] = 0;
wacom->led.llv = 0;
wacom->led.hlv = 0;
wacom->led.img_lum = 0;
error = sysfs_create_group(&wacom->hdev->dev.kobj,
&cintiq_led_attr_group);
break;
case INTUOS5S:
case INTUOS5:
case INTUOS5L:
case INTUOSPS:
case INTUOSPM:
case INTUOSPL:
if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN) {
wacom->led.select[0] = 0;
wacom->led.select[1] = 0;
wacom->led.llv = 32;
wacom->led.hlv = 0;
wacom->led.img_lum = 0;
error = sysfs_create_group(&wacom->hdev->dev.kobj,
&intuos5_led_attr_group);
} else
return 0;
break;
default:
return 0;
}
if (error) {
hid_err(wacom->hdev,
"cannot create sysfs group err: %d\n", error);
return error;
}
wacom_led_control(wacom);
wacom->led_initialized = true;
return 0;
}
static void wacom_destroy_leds(struct wacom *wacom)
{
if (!wacom->led_initialized)
return;
wacom->led_initialized = false;
switch (wacom->wacom_wac.features.type) {
case INTUOS4S:
case INTUOS4:
case INTUOS4WL:
case INTUOS4L:
sysfs_remove_group(&wacom->hdev->dev.kobj,
&intuos4_led_attr_group);
break;
case WACOM_24HD:
case WACOM_21UX2:
sysfs_remove_group(&wacom->hdev->dev.kobj,
&cintiq_led_attr_group);
break;
case INTUOS5S:
case INTUOS5:
case INTUOS5L:
case INTUOSPS:
case INTUOSPM:
case INTUOSPL:
if (wacom->wacom_wac.features.device_type == BTN_TOOL_PEN)
sysfs_remove_group(&wacom->hdev->dev.kobj,
&intuos5_led_attr_group);
break;
}
}
static enum power_supply_property wacom_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_SCOPE,
POWER_SUPPLY_PROP_CAPACITY
};
static enum power_supply_property wacom_ac_props[] = {
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_ONLINE,
POWER_SUPPLY_PROP_SCOPE,
};
static int wacom_battery_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct wacom *wacom = power_supply_get_drvdata(psy);
int ret = 0;
switch (psp) {
case POWER_SUPPLY_PROP_SCOPE:
val->intval = POWER_SUPPLY_SCOPE_DEVICE;
break;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval =
wacom->wacom_wac.battery_capacity;
break;
case POWER_SUPPLY_PROP_STATUS:
if (wacom->wacom_wac.bat_charging)
val->intval = POWER_SUPPLY_STATUS_CHARGING;
else if (wacom->wacom_wac.battery_capacity == 100 &&
wacom->wacom_wac.ps_connected)
val->intval = POWER_SUPPLY_STATUS_FULL;
else
val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int wacom_ac_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct wacom *wacom = power_supply_get_drvdata(psy);
int ret = 0;
switch (psp) {
case POWER_SUPPLY_PROP_PRESENT:
/* fall through */
case POWER_SUPPLY_PROP_ONLINE:
val->intval = wacom->wacom_wac.ps_connected;
break;
case POWER_SUPPLY_PROP_SCOPE:
val->intval = POWER_SUPPLY_SCOPE_DEVICE;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
static int wacom_initialize_battery(struct wacom *wacom)
{
static atomic_t battery_no = ATOMIC_INIT(0);
struct power_supply_config psy_cfg = { .drv_data = wacom, };
unsigned long n;
if (wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) {
struct power_supply_desc *bat_desc = &wacom->battery_desc;
struct power_supply_desc *ac_desc = &wacom->ac_desc;
n = atomic_inc_return(&battery_no) - 1;
bat_desc->properties = wacom_battery_props;
bat_desc->num_properties = ARRAY_SIZE(wacom_battery_props);
bat_desc->get_property = wacom_battery_get_property;
sprintf(wacom->wacom_wac.bat_name, "wacom_battery_%ld", n);
bat_desc->name = wacom->wacom_wac.bat_name;
bat_desc->type = POWER_SUPPLY_TYPE_BATTERY;
bat_desc->use_for_apm = 0;
ac_desc->properties = wacom_ac_props;
ac_desc->num_properties = ARRAY_SIZE(wacom_ac_props);
ac_desc->get_property = wacom_ac_get_property;
sprintf(wacom->wacom_wac.ac_name, "wacom_ac_%ld", n);
ac_desc->name = wacom->wacom_wac.ac_name;
ac_desc->type = POWER_SUPPLY_TYPE_MAINS;
ac_desc->use_for_apm = 0;
wacom->battery = power_supply_register(&wacom->hdev->dev,
&wacom->battery_desc, &psy_cfg);
if (IS_ERR(wacom->battery))
return PTR_ERR(wacom->battery);
power_supply_powers(wacom->battery, &wacom->hdev->dev);
wacom->ac = power_supply_register(&wacom->hdev->dev,
&wacom->ac_desc,
&psy_cfg);
if (IS_ERR(wacom->ac)) {
power_supply_unregister(wacom->battery);
return PTR_ERR(wacom->ac);
}
power_supply_powers(wacom->ac, &wacom->hdev->dev);
}
return 0;
}
static void wacom_destroy_battery(struct wacom *wacom)
{
if ((wacom->wacom_wac.features.quirks & WACOM_QUIRK_BATTERY) &&
wacom->battery) {
power_supply_unregister(wacom->battery);
wacom->battery = NULL;
power_supply_unregister(wacom->ac);
wacom->ac = NULL;
}
}
static ssize_t wacom_show_speed(struct device *dev,
struct device_attribute
*attr, char *buf)
{
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct wacom *wacom = hid_get_drvdata(hdev);
return snprintf(buf, PAGE_SIZE, "%i\n", wacom->wacom_wac.bt_high_speed);
}
static ssize_t wacom_store_speed(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct hid_device *hdev = container_of(dev, struct hid_device, dev);
struct wacom *wacom = hid_get_drvdata(hdev);
u8 new_speed;
if (kstrtou8(buf, 0, &new_speed))
return -EINVAL;
if (new_speed != 0 && new_speed != 1)
return -EINVAL;
wacom_bt_query_tablet_data(hdev, new_speed, &wacom->wacom_wac.features);
return count;
}
static DEVICE_ATTR(speed, DEV_ATTR_RW_PERM,
wacom_show_speed, wacom_store_speed);
static struct input_dev *wacom_allocate_input(struct wacom *wacom)
{
struct input_dev *input_dev;
struct hid_device *hdev = wacom->hdev;
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
input_dev = input_allocate_device();
if (!input_dev)
return NULL;
input_dev->name = wacom_wac->name;
input_dev->phys = hdev->phys;
input_dev->dev.parent = &hdev->dev;
input_dev->open = wacom_open;
input_dev->close = wacom_close;
input_dev->uniq = hdev->uniq;
input_dev->id.bustype = hdev->bus;
input_dev->id.vendor = hdev->vendor;
input_dev->id.product = wacom_wac->pid ? wacom_wac->pid : hdev->product;
input_dev->id.version = hdev->version;
input_set_drvdata(input_dev, wacom);
return input_dev;
}
static void wacom_free_inputs(struct wacom *wacom)
{
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
if (wacom_wac->input)
input_free_device(wacom_wac->input);
if (wacom_wac->pad_input)
input_free_device(wacom_wac->pad_input);
wacom_wac->input = NULL;
wacom_wac->pad_input = NULL;
}
static int wacom_allocate_inputs(struct wacom *wacom)
{
struct input_dev *input_dev, *pad_input_dev;
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
input_dev = wacom_allocate_input(wacom);
pad_input_dev = wacom_allocate_input(wacom);
if (!input_dev || !pad_input_dev) {
wacom_free_inputs(wacom);
return -ENOMEM;
}
wacom_wac->input = input_dev;
wacom_wac->pad_input = pad_input_dev;
wacom_wac->pad_input->name = wacom_wac->pad_name;
return 0;
}
static void wacom_clean_inputs(struct wacom *wacom)
{
if (wacom->wacom_wac.input) {
if (wacom->wacom_wac.input_registered)
input_unregister_device(wacom->wacom_wac.input);
else
input_free_device(wacom->wacom_wac.input);
}
if (wacom->wacom_wac.pad_input) {
if (wacom->wacom_wac.pad_registered)
input_unregister_device(wacom->wacom_wac.pad_input);
else
input_free_device(wacom->wacom_wac.pad_input);
}
wacom->wacom_wac.input = NULL;
wacom->wacom_wac.pad_input = NULL;
wacom_destroy_leds(wacom);
}
static int wacom_register_inputs(struct wacom *wacom)
{
struct input_dev *input_dev, *pad_input_dev;
struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
int error;
input_dev = wacom_wac->input;
pad_input_dev = wacom_wac->pad_input;
if (!input_dev || !pad_input_dev)
return -EINVAL;
error = wacom_setup_pentouch_input_capabilities(input_dev, wacom_wac);
if (!error) {
error = input_register_device(input_dev);
if (error)
return error;
wacom_wac->input_registered = true;
}
error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
if (error) {
/* no pad in use on this interface */
input_free_device(pad_input_dev);
wacom_wac->pad_input = NULL;
pad_input_dev = NULL;
} else {
error = input_register_device(pad_input_dev);
if (error)
goto fail_register_pad_input;
wacom_wac->pad_registered = true;
error = wacom_initialize_leds(wacom);
if (error)
goto fail_leds;
}
return 0;
fail_leds:
input_unregister_device(pad_input_dev);
pad_input_dev = NULL;
wacom_wac->pad_registered = false;
fail_register_pad_input:
input_unregister_device(input_dev);
wacom_wac->input = NULL;
wacom_wac->input_registered = false;
return error;
}
static void wacom_wireless_work(struct work_struct *work)
{
struct wacom *wacom = container_of(work, struct wacom, work);
struct usb_device *usbdev = wacom->usbdev;
struct wacom_wac *wacom_wac = &wacom->wacom_wac;
struct hid_device *hdev1, *hdev2;
struct wacom *wacom1, *wacom2;
struct wacom_wac *wacom_wac1, *wacom_wac2;
int error;
/*
* Regardless if this is a disconnect or a new tablet,
* remove any existing input and battery devices.
*/
wacom_destroy_battery(wacom);
/* Stylus interface */
hdev1 = usb_get_intfdata(usbdev->config->interface[1]);
wacom1 = hid_get_drvdata(hdev1);
wacom_wac1 = &(wacom1->wacom_wac);
wacom_clean_inputs(wacom1);
/* Touch interface */
hdev2 = usb_get_intfdata(usbdev->config->interface[2]);
wacom2 = hid_get_drvdata(hdev2);
wacom_wac2 = &(wacom2->wacom_wac);
wacom_clean_inputs(wacom2);
if (wacom_wac->pid == 0) {
hid_info(wacom->hdev, "wireless tablet disconnected\n");
wacom_wac1->shared->type = 0;
} else {
const struct hid_device_id *id = wacom_ids;
hid_info(wacom->hdev, "wireless tablet connected with PID %x\n",
wacom_wac->pid);
while (id->bus) {
if (id->vendor == USB_VENDOR_ID_WACOM &&
id->product == wacom_wac->pid)
break;
id++;
}
if (!id->bus) {
hid_info(wacom->hdev, "ignoring unknown PID.\n");
return;
}
/* Stylus interface */
wacom_wac1->features =
*((struct wacom_features *)id->driver_data);
wacom_wac1->features.device_type = BTN_TOOL_PEN;
snprintf(wacom_wac1->name, WACOM_NAME_MAX, "%s (WL) Pen",
wacom_wac1->features.name);
snprintf(wacom_wac1->pad_name, WACOM_NAME_MAX, "%s (WL) Pad",
wacom_wac1->features.name);
wacom_wac1->shared->touch_max = wacom_wac1->features.touch_max;
wacom_wac1->shared->type = wacom_wac1->features.type;
wacom_wac1->pid = wacom_wac->pid;
error = wacom_allocate_inputs(wacom1) ||
wacom_register_inputs(wacom1);
if (error)
goto fail;
/* Touch interface */
if (wacom_wac1->features.touch_max ||
wacom_wac1->features.type == INTUOSHT) {
wacom_wac2->features =
*((struct wacom_features *)id->driver_data);
wacom_wac2->features.pktlen = WACOM_PKGLEN_BBTOUCH3;
wacom_wac2->features.device_type = BTN_TOOL_FINGER;
wacom_wac2->features.x_max = wacom_wac2->features.y_max = 4096;
if (wacom_wac2->features.touch_max)
snprintf(wacom_wac2->name, WACOM_NAME_MAX,
"%s (WL) Finger",wacom_wac2->features.name);
else
snprintf(wacom_wac2->name, WACOM_NAME_MAX,
"%s (WL) Pad",wacom_wac2->features.name);
snprintf(wacom_wac2->pad_name, WACOM_NAME_MAX,
"%s (WL) Pad", wacom_wac2->features.name);
wacom_wac2->pid = wacom_wac->pid;
error = wacom_allocate_inputs(wacom2) ||
wacom_register_inputs(wacom2);
if (error)
goto fail;
if (wacom_wac1->features.type == INTUOSHT &&
wacom_wac1->features.touch_max)
wacom_wac->shared->touch_input = wacom_wac2->input;
}
error = wacom_initialize_battery(wacom);
if (error)
goto fail;
}
return;
fail:
wacom_clean_inputs(wacom1);
wacom_clean_inputs(wacom2);
return;
}
/*
* Not all devices report physical dimensions from HID.
* Compute the default from hardcoded logical dimension
* and resolution before driver overwrites them.
*/
static void wacom_set_default_phy(struct wacom_features *features)
{
if (features->x_resolution) {
features->x_phy = (features->x_max * 100) /
features->x_resolution;
features->y_phy = (features->y_max * 100) /
features->y_resolution;
}
}
static void wacom_calculate_res(struct wacom_features *features)
{
features->x_resolution = wacom_calc_hid_res(features->x_max,
features->x_phy,
features->unit,
features->unitExpo);
features->y_resolution = wacom_calc_hid_res(features->y_max,
features->y_phy,
features->unit,
features->unitExpo);
}
static size_t wacom_compute_pktlen(struct hid_device *hdev)
{
struct hid_report_enum *report_enum;
struct hid_report *report;
size_t size = 0;
report_enum = hdev->report_enum + HID_INPUT_REPORT;
list_for_each_entry(report, &report_enum->report_list, list) {
size_t report_size = hid_report_len(report);
if (report_size > size)
size = report_size;
}
return size;
}
static int wacom_probe(struct hid_device *hdev,
const struct hid_device_id *id)
{
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
struct usb_device *dev = interface_to_usbdev(intf);
struct wacom *wacom;
struct wacom_wac *wacom_wac;
struct wacom_features *features;
int error;
unsigned int connect_mask = HID_CONNECT_HIDRAW;
if (!id->driver_data)
return -EINVAL;
hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
wacom = kzalloc(sizeof(struct wacom), GFP_KERNEL);
if (!wacom)
return -ENOMEM;
hid_set_drvdata(hdev, wacom);
wacom->hdev = hdev;
/* ask for the report descriptor to be loaded by HID */
error = hid_parse(hdev);
if (error) {
hid_err(hdev, "parse failed\n");
goto fail_parse;
}
wacom_wac = &wacom->wacom_wac;
wacom_wac->features = *((struct wacom_features *)id->driver_data);
features = &wacom_wac->features;
features->pktlen = wacom_compute_pktlen(hdev);
if (features->pktlen > WACOM_PKGLEN_MAX) {
error = -EINVAL;
goto fail_pktlen;
}
if (features->check_for_hid_type && features->hid_type != hdev->type) {
error = -ENODEV;
goto fail_type;
}
wacom->usbdev = dev;
wacom->intf = intf;
mutex_init(&wacom->lock);
INIT_WORK(&wacom->work, wacom_wireless_work);
if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
error = wacom_allocate_inputs(wacom);
if (error)
goto fail_allocate_inputs;
}
/* set the default size in case we do not get them from hid */
wacom_set_default_phy(features);
/* Retrieve the physical and logical size for touch devices */
wacom_retrieve_hid_descriptor(hdev, features);
/*
* Intuos5 has no useful data about its touch interface in its
* HID descriptor. If this is the touch interface (PacketSize
* of WACOM_PKGLEN_BBTOUCH3), override the table values.
*/
if (features->type >= INTUOS5S && features->type <= INTUOSHT) {
if (features->pktlen == WACOM_PKGLEN_BBTOUCH3) {
features->device_type = BTN_TOOL_FINGER;
features->x_max = 4096;
features->y_max = 4096;
} else {
features->device_type = BTN_TOOL_PEN;
}
}
/*
* Same thing for Bamboo 3rd gen.
*/
if ((features->type == BAMBOO_PT) &&
(features->pktlen == WACOM_PKGLEN_BBTOUCH3) &&
(features->device_type == BTN_TOOL_PEN)) {
features->device_type = BTN_TOOL_FINGER;
features->x_max = 4096;
features->y_max = 4096;
}
if (hdev->bus == BUS_BLUETOOTH)
features->quirks |= WACOM_QUIRK_BATTERY;
wacom_setup_device_quirks(features);
/* set unit to "100th of a mm" for devices not reported by HID */
if (!features->unit) {
features->unit = 0x11;
features->unitExpo = -3;
}
wacom_calculate_res(features);
strlcpy(wacom_wac->name, features->name, sizeof(wacom_wac->name));
snprintf(wacom_wac->pad_name, sizeof(wacom_wac->pad_name),
"%s Pad", features->name);
if (features->quirks & WACOM_QUIRK_MULTI_INPUT) {
/* Append the device type to the name */
if (features->device_type != BTN_TOOL_FINGER)
strlcat(wacom_wac->name, " Pen", WACOM_NAME_MAX);
else if (features->touch_max)
strlcat(wacom_wac->name, " Finger", WACOM_NAME_MAX);
else
strlcat(wacom_wac->name, " Pad", WACOM_NAME_MAX);
error = wacom_add_shared_data(hdev);
if (error)
goto fail_shared_data;
}
if (!(features->quirks & WACOM_QUIRK_MONITOR) &&
(features->quirks & WACOM_QUIRK_BATTERY)) {
error = wacom_initialize_battery(wacom);
if (error)
goto fail_battery;
}
if (!(features->quirks & WACOM_QUIRK_NO_INPUT)) {
error = wacom_register_inputs(wacom);
if (error)
goto fail_register_inputs;
}
if (hdev->bus == BUS_BLUETOOTH) {
error = device_create_file(&hdev->dev, &dev_attr_speed);
if (error)
hid_warn(hdev,
"can't create sysfs speed attribute err: %d\n",
error);
}
if (features->type == HID_GENERIC)
connect_mask |= HID_CONNECT_DRIVER;
/* Regular HID work starts now */
error = hid_hw_start(hdev, connect_mask);
if (error) {
hid_err(hdev, "hw start failed\n");
goto fail_hw_start;
}
/* Note that if query fails it is not a hard failure */
wacom_query_tablet_data(hdev, features);
if (features->quirks & WACOM_QUIRK_MONITOR)
error = hid_hw_open(hdev);
if (wacom_wac->features.type == INTUOSHT && wacom_wac->features.touch_max) {
if (wacom_wac->features.device_type == BTN_TOOL_FINGER)
wacom_wac->shared->touch_input = wacom_wac->input;
}
return 0;
fail_hw_start:
if (hdev->bus == BUS_BLUETOOTH)
device_remove_file(&hdev->dev, &dev_attr_speed);
fail_register_inputs:
wacom_clean_inputs(wacom);
wacom_destroy_battery(wacom);
fail_battery:
wacom_remove_shared_data(wacom_wac);
fail_shared_data:
wacom_clean_inputs(wacom);
fail_allocate_inputs:
fail_type:
fail_pktlen:
fail_parse:
kfree(wacom);
hid_set_drvdata(hdev, NULL);
return error;
}
static void wacom_remove(struct hid_device *hdev)
{
struct wacom *wacom = hid_get_drvdata(hdev);
hid_hw_stop(hdev);
cancel_work_sync(&wacom->work);
wacom_clean_inputs(wacom);
if (hdev->bus == BUS_BLUETOOTH)
device_remove_file(&hdev->dev, &dev_attr_speed);
wacom_destroy_battery(wacom);
wacom_remove_shared_data(&wacom->wacom_wac);
hid_set_drvdata(hdev, NULL);
kfree(wacom);
}
#ifdef CONFIG_PM
static int wacom_resume(struct hid_device *hdev)
{
struct wacom *wacom = hid_get_drvdata(hdev);
struct wacom_features *features = &wacom->wacom_wac.features;
mutex_lock(&wacom->lock);
/* switch to wacom mode first */
wacom_query_tablet_data(hdev, features);
wacom_led_control(wacom);
mutex_unlock(&wacom->lock);
return 0;
}
static int wacom_reset_resume(struct hid_device *hdev)
{
return wacom_resume(hdev);
}
#endif /* CONFIG_PM */
static struct hid_driver wacom_driver = {
.name = "wacom",
.id_table = wacom_ids,
.probe = wacom_probe,
.remove = wacom_remove,
.event = wacom_wac_event,
.report = wacom_wac_report,
#ifdef CONFIG_PM
.resume = wacom_resume,
.reset_resume = wacom_reset_resume,
#endif
.raw_event = wacom_raw_event,
};
module_hid_driver(wacom_driver);
MODULE_VERSION(DRIVER_VERSION);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
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