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Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rydberg/input-mt into next

This commit is contained in:
Dmitry Torokhov 2010-12-27 17:33:20 -08:00
parent ef11e701f3 4f56ce929c
commit 5c461b913a
11 changed files with 168 additions and 24 deletions
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44
Documentation/input/multi-touch-protocol.txt
View File

@ -1,6 +1,6 @@
Multi-touch (MT) Protocol
-------------------------
Copyright (C) 2009 Henrik Rydberg <rydberg@euromail.se>
Copyright (C) 2009-2010 Henrik Rydberg <rydberg@euromail.se>
Introduction
@ -169,12 +169,16 @@ described by adding the MINOR parameters, such that MAJOR and MINOR are the
major and minor axis of an ellipse. Finally, the orientation of the oval
shape can be describe with the ORIENTATION parameter.
For type A devices, further specification of the touch shape is possible
via ABS_MT_BLOB_ID.
The ABS_MT_TOOL_TYPE may be used to specify whether the touching tool is a
contact or a pen or something else. Devices with more granular information
may specify general shapes as blobs, i.e., as a sequence of rectangular
shapes grouped together by an ABS_MT_BLOB_ID. Finally, for the few devices
that currently support it, the ABS_MT_TRACKING_ID event may be used to
report contact tracking from hardware [5].
finger or a pen or something else. Finally, the ABS_MT_TRACKING_ID event
may be used to track identified contacts over time [5].
In the type B protocol, ABS_MT_TOOL_TYPE and ABS_MT_TRACKING_ID are
implicitly handled by input core; drivers should instead call
input_mt_report_slot_state().
Event Semantics
@ -247,21 +251,24 @@ ABS_MT_TOOL_TYPE
The type of approaching tool. A lot of kernel drivers cannot distinguish
between different tool types, such as a finger or a pen. In such cases, the
event should be omitted. The protocol currently supports MT_TOOL_FINGER and
MT_TOOL_PEN [2].
MT_TOOL_PEN [2]. For type B devices, this event is handled by input core;
drivers should instead use input_mt_report_slot_state().
ABS_MT_BLOB_ID
The BLOB_ID groups several packets together into one arbitrarily shaped
contact. This is a low-level anonymous grouping for type A devices, and
contact. The sequence of points forms a polygon which defines the shape of
the contact. This is a low-level anonymous grouping for type A devices, and
should not be confused with the high-level trackingID [5]. Most type A
devices do not have blob capability, so drivers can safely omit this event.
ABS_MT_TRACKING_ID
The TRACKING_ID identifies an initiated contact throughout its life cycle
[5]. This event is mandatory for type B devices. The value range of the
TRACKING_ID should be large enough to ensure unique identification of a
contact maintained over an extended period of time.
[5]. The value range of the TRACKING_ID should be large enough to ensure
unique identification of a contact maintained over an extended period of
time. For type B devices, this event is handled by input core; drivers
should instead use input_mt_report_slot_state().
Event Computation
@ -308,18 +315,19 @@ and with ORIENTATION, one can detect twisting of fingers.
Notes
-----
In order to stay compatible with existing applications, the data
reported in a finger packet must not be recognized as single-touch
events. In addition, all finger data must bypass input filtering,
since subsequent events of the same type refer to different fingers.
In order to stay compatible with existing applications, the data reported
in a finger packet must not be recognized as single-touch events.
The first kernel driver to utilize the MT protocol is the bcm5974 driver,
where examples can be found.
For type A devices, all finger data bypasses input filtering, since
subsequent events of the same type refer to different fingers.
For example usage of the type A protocol, see the bcm5974 driver. For
example usage of the type B protocol, see the hid-egalax driver.
[1] With the extension ABS_MT_APPROACH_X and ABS_MT_APPROACH_Y, the
difference between the contact position and the approaching tool position
could be used to derive tilt.
[2] The list can of course be extended.
[3] Multitouch X driver project: http://bitmath.org/code/multitouch/.
[3] The mtdev project: http://bitmath.org/code/mtdev/.
[4] See the section on event computation.
[5] See the section on finger tracking.

1
drivers/hid/hid-core.c
View File

@ -1302,6 +1302,7 @@ static const struct hid_device_id hid_blacklist[] = {
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV, USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },

2
drivers/hid/hid-egalax.c
View File

@ -242,6 +242,8 @@ static const struct hid_device_id egalax_devices[] = {
USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3) },
{ HID_USB_DEVICE(USB_VENDOR_ID_DWAV,
USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4) },
{ }
};
MODULE_DEVICE_TABLE(hid, egalax_devices);

1
drivers/hid/hid-ids.h
View File

@ -198,6 +198,7 @@
#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH1 0x720c
#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH2 0x72a1
#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH3 0x480e
#define USB_DEVICE_ID_DWAV_EGALAX_MULTITOUCH4 0x726b
#define USB_VENDOR_ID_ELECOM 0x056e
#define USB_DEVICE_ID_ELECOM_BM084 0x0061

4
drivers/input/evdev.c
View File

@ -678,6 +678,10 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd,
#define EVIOC_MASK_SIZE(nr) ((nr) & ~(_IOC_SIZEMASK << _IOC_SIZESHIFT))
switch (EVIOC_MASK_SIZE(cmd)) {
case EVIOCGPROP(0):
return bits_to_user(dev->propbit, INPUT_PROP_MAX,
size, p, compat_mode);
case EVIOCGKEY(0):
return bits_to_user(dev->key, KEY_MAX, size, p, compat_mode);

21
drivers/input/input.c
View File

@ -1110,6 +1110,8 @@ static int input_devices_seq_show(struct seq_file *seq, void *v)
seq_printf(seq, "%s ", handle->name);
seq_putc(seq, '\n');
input_seq_print_bitmap(seq, "PROP", dev->propbit, INPUT_PROP_MAX);
input_seq_print_bitmap(seq, "EV", dev->evbit, EV_MAX);
if (test_bit(EV_KEY, dev->evbit))
input_seq_print_bitmap(seq, "KEY", dev->keybit, KEY_MAX);
@ -1333,11 +1335,26 @@ static ssize_t input_dev_show_modalias(struct device *dev,
}
static DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
static int input_print_bitmap(char *buf, int buf_size, unsigned long *bitmap,
int max, int add_cr);
static ssize_t input_dev_show_properties(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct input_dev *input_dev = to_input_dev(dev);
int len = input_print_bitmap(buf, PAGE_SIZE, input_dev->propbit,
INPUT_PROP_MAX, true);
return min_t(int, len, PAGE_SIZE);
}
static DEVICE_ATTR(properties, S_IRUGO, input_dev_show_properties, NULL);
static struct attribute *input_dev_attrs[] = {
&dev_attr_name.attr,
&dev_attr_phys.attr,
&dev_attr_uniq.attr,
&dev_attr_modalias.attr,
&dev_attr_properties.attr,
NULL
};
@ -1471,7 +1488,7 @@ static int input_add_uevent_bm_var(struct kobj_uevent_env *env,
{
int len;
if (add_uevent_var(env, "%s=", name))
if (add_uevent_var(env, "%s", name))
return -ENOMEM;
len = input_print_bitmap(&env->buf[env->buflen - 1],
@ -1537,6 +1554,8 @@ static int input_dev_uevent(struct device *device, struct kobj_uevent_env *env)
if (dev->uniq)
INPUT_ADD_HOTPLUG_VAR("UNIQ=\"%s\"", dev->uniq);
INPUT_ADD_HOTPLUG_BM_VAR("PROP=", dev->propbit, INPUT_PROP_MAX);
INPUT_ADD_HOTPLUG_BM_VAR("EV=", dev->evbit, EV_MAX);
if (test_bit(EV_KEY, dev->evbit))
INPUT_ADD_HOTPLUG_BM_VAR("KEY=", dev->keybit, KEY_MAX);

4
drivers/input/misc/uinput.c
View File

@ -680,6 +680,10 @@ static long uinput_ioctl_handler(struct file *file, unsigned int cmd,
retval = uinput_set_bit(arg, swbit, SW_MAX);
break;
case UI_SET_PROPBIT:
retval = uinput_set_bit(arg, propbit, INPUT_PROP_MAX);
break;
case UI_SET_PHYS:
if (udev->state == UIST_CREATED) {
retval = -EINVAL;

95
drivers/input/mouse/synaptics.c
View File

@ -25,7 +25,7 @@
#include <linux/module.h>
#include <linux/dmi.h>
#include <linux/input.h>
#include <linux/input/mt.h>
#include <linux/serio.h>
#include <linux/libps2.h>
#include <linux/slab.h>
@ -279,6 +279,25 @@ static void synaptics_set_rate(struct psmouse *psmouse, unsigned int rate)
synaptics_mode_cmd(psmouse, priv->mode);
}
static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse)
{
static unsigned char param = 0xc8;
struct synaptics_data *priv = psmouse->private;
if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
return 0;
if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL))
return -1;
if (ps2_command(&psmouse->ps2dev, &param, PSMOUSE_CMD_SETRATE))
return -1;
/* Advanced gesture mode also sends multi finger data */
priv->capabilities |= BIT(1);
return 0;
}
/*****************************************************************************
* Synaptics pass-through PS/2 port support
****************************************************************************/
@ -380,7 +399,9 @@ static void synaptics_pt_create(struct psmouse *psmouse)
* Functions to interpret the absolute mode packets
****************************************************************************/
static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data *priv, struct synaptics_hw_state *hw)
static int synaptics_parse_hw_state(const unsigned char buf[],
struct synaptics_data *priv,
struct synaptics_hw_state *hw)
{
memset(hw, 0, sizeof(struct synaptics_hw_state));
@ -397,6 +418,14 @@ static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data
((buf[0] & 0x04) >> 1) |
((buf[3] & 0x04) >> 2));
if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) && hw->w == 2) {
/* Gesture packet: (x, y, z) at half resolution */
priv->mt.x = (((buf[4] & 0x0f) << 8) | buf[1]) << 1;
priv->mt.y = (((buf[4] & 0xf0) << 4) | buf[2]) << 1;
priv->mt.z = ((buf[3] & 0x30) | (buf[5] & 0x0f)) << 1;
return 1;
}
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
@ -452,6 +481,36 @@ static void synaptics_parse_hw_state(unsigned char buf[], struct synaptics_data
hw->left = (buf[0] & 0x01) ? 1 : 0;
hw->right = (buf[0] & 0x02) ? 1 : 0;
}
return 0;
}
static void set_slot(struct input_dev *dev, int slot, bool active, int x, int y)
{
input_mt_slot(dev, slot);
input_mt_report_slot_state(dev, MT_TOOL_FINGER, active);
if (active) {
input_report_abs(dev, ABS_MT_POSITION_X, x);
input_report_abs(dev, ABS_MT_POSITION_Y,
YMAX_NOMINAL + YMIN_NOMINAL - y);
}
}
static void synaptics_report_semi_mt_data(struct input_dev *dev,
const struct synaptics_hw_state *a,
const struct synaptics_hw_state *b,
int num_fingers)
{
if (num_fingers >= 2) {
set_slot(dev, 0, true, min(a->x, b->x), min(a->y, b->y));
set_slot(dev, 1, true, max(a->x, b->x), max(a->y, b->y));
} else if (num_fingers == 1) {
set_slot(dev, 0, true, a->x, a->y);
set_slot(dev, 1, false, 0, 0);
} else {
set_slot(dev, 0, false, 0, 0);
set_slot(dev, 1, false, 0, 0);
}
}
/*
@ -466,7 +525,8 @@ static void synaptics_process_packet(struct psmouse *psmouse)
int finger_width;
int i;
synaptics_parse_hw_state(psmouse->packet, priv, &hw);
if (synaptics_parse_hw_state(psmouse->packet, priv, &hw))
return;
if (hw.scroll) {
priv->scroll += hw.scroll;
@ -488,7 +548,7 @@ static void synaptics_process_packet(struct psmouse *psmouse)
return;
}
if (hw.z > 0) {
if (hw.z > 0 && hw.x > 1) {
num_fingers = 1;
finger_width = 5;
if (SYN_CAP_EXTENDED(priv->capabilities)) {
@ -512,6 +572,9 @@ static void synaptics_process_packet(struct psmouse *psmouse)
finger_width = 0;
}
if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c))
synaptics_report_semi_mt_data(dev, &hw, &priv->mt, num_fingers);
/* Post events
* BTN_TOUCH has to be first as mousedev relies on it when doing
* absolute -> relative conversion
@ -519,7 +582,7 @@ static void synaptics_process_packet(struct psmouse *psmouse)
if (hw.z > 30) input_report_key(dev, BTN_TOUCH, 1);
if (hw.z < 25) input_report_key(dev, BTN_TOUCH, 0);
if (hw.z > 0) {
if (num_fingers > 0) {
input_report_abs(dev, ABS_X, hw.x);
input_report_abs(dev, ABS_Y, YMAX_NOMINAL + YMIN_NOMINAL - hw.y);
}
@ -622,6 +685,8 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
{
int i;
__set_bit(INPUT_PROP_POINTER, dev->propbit);
__set_bit(EV_ABS, dev->evbit);
input_set_abs_params(dev, ABS_X,
XMIN_NOMINAL, priv->x_max ?: XMAX_NOMINAL, 0, 0);
@ -629,6 +694,15 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
YMIN_NOMINAL, priv->y_max ?: YMAX_NOMINAL, 0, 0);
input_set_abs_params(dev, ABS_PRESSURE, 0, 255, 0, 0);
if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
input_mt_init_slots(dev, 2);
input_set_abs_params(dev, ABS_MT_POSITION_X, XMIN_NOMINAL,
priv->x_max ?: XMAX_NOMINAL, 0, 0);
input_set_abs_params(dev, ABS_MT_POSITION_Y, YMIN_NOMINAL,
priv->y_max ?: YMAX_NOMINAL, 0, 0);
}
if (SYN_CAP_PALMDETECT(priv->capabilities))
input_set_abs_params(dev, ABS_TOOL_WIDTH, 0, 15, 0, 0);
@ -663,6 +737,7 @@ static void set_input_params(struct input_dev *dev, struct synaptics_data *priv)
input_abs_set_res(dev, ABS_Y, priv->y_res);
if (SYN_CAP_CLICKPAD(priv->ext_cap_0c)) {
__set_bit(INPUT_PROP_BUTTONPAD, dev->propbit);
/* Clickpads report only left button */
__clear_bit(BTN_RIGHT, dev->keybit);
__clear_bit(BTN_MIDDLE, dev->keybit);
@ -702,6 +777,11 @@ static int synaptics_reconnect(struct psmouse *psmouse)
return -1;
}
if (synaptics_set_advanced_gesture_mode(psmouse)) {
printk(KERN_ERR "Advanced gesture mode reconnect failed.\n");
return -1;
}
return 0;
}
@ -799,6 +879,11 @@ int synaptics_init(struct psmouse *psmouse)
goto init_fail;
}
if (synaptics_set_advanced_gesture_mode(psmouse)) {
printk(KERN_ERR "Advanced gesture mode init failed.\n");
goto init_fail;
}
priv->pkt_type = SYN_MODEL_NEWABS(priv->model_id) ? SYN_NEWABS : SYN_OLDABS;
printk(KERN_INFO "Synaptics Touchpad, model: %ld, fw: %ld.%ld, id: %#lx, caps: %#lx/%#lx/%#lx\n",

3
drivers/input/mouse/synaptics.h
View File

@ -53,6 +53,7 @@
#define SYN_CAP_PRODUCT_ID(ec) (((ec) & 0xff0000) >> 16)
#define SYN_CAP_CLICKPAD(ex0c) ((ex0c) & 0x100100)
#define SYN_CAP_MAX_DIMENSIONS(ex0c) ((ex0c) & 0x020000)
#define SYN_CAP_ADV_GESTURE(ex0c) ((ex0c) & 0x080000)
/* synaptics modes query bits */
#define SYN_MODE_ABSOLUTE(m) ((m) & (1 << 7))
@ -112,6 +113,8 @@ struct synaptics_data {
int scroll;
struct serio *pt_port; /* Pass-through serio port */
struct synaptics_hw_state mt; /* current gesture packet */
};
void synaptics_module_init(void);

16
include/linux/input.h
View File

@ -91,6 +91,7 @@ struct input_keymap_entry {
#define EVIOCGNAME(len) _IOC(_IOC_READ, 'E', 0x06, len) /* get device name */
#define EVIOCGPHYS(len) _IOC(_IOC_READ, 'E', 0x07, len) /* get physical location */
#define EVIOCGUNIQ(len) _IOC(_IOC_READ, 'E', 0x08, len) /* get unique identifier */
#define EVIOCGPROP(len) _IOC(_IOC_READ, 'E', 0x09, len) /* get device properties */
#define EVIOCGKEY(len) _IOC(_IOC_READ, 'E', 0x18, len) /* get global key state */
#define EVIOCGLED(len) _IOC(_IOC_READ, 'E', 0x19, len) /* get all LEDs */
@ -107,6 +108,18 @@ struct input_keymap_entry {
#define EVIOCGRAB _IOW('E', 0x90, int) /* Grab/Release device */
/*
* Device properties and quirks
*/
#define INPUT_PROP_POINTER 0x00 /* needs a pointer */
#define INPUT_PROP_DIRECT 0x01 /* direct input devices */
#define INPUT_PROP_BUTTONPAD 0x02 /* has button(s) under pad */
#define INPUT_PROP_SEMI_MT 0x03 /* touch rectangle only */
#define INPUT_PROP_MAX 0x1f
#define INPUT_PROP_CNT (INPUT_PROP_MAX + 1)
/*
* Event types
*/
@ -1090,6 +1103,7 @@ struct ff_effect {
* @phys: physical path to the device in the system hierarchy
* @uniq: unique identification code for the device (if device has it)
* @id: id of the device (struct input_id)
* @propbit: bitmap of device properties and quirks
* @evbit: bitmap of types of events supported by the device (EV_KEY,
* EV_REL, etc.)
* @keybit: bitmap of keys/buttons this device has
@ -1173,6 +1187,8 @@ struct input_dev {
const char *uniq;
struct input_id id;
unsigned long propbit[BITS_TO_LONGS(INPUT_PROP_CNT)];
unsigned long evbit[BITS_TO_LONGS(EV_CNT)];
unsigned long keybit[BITS_TO_LONGS(KEY_CNT)];
unsigned long relbit[BITS_TO_LONGS(REL_CNT)];

1
include/linux/uinput.h
View File

@ -104,6 +104,7 @@ struct uinput_ff_erase {
#define UI_SET_FFBIT _IOW(UINPUT_IOCTL_BASE, 107, int)
#define UI_SET_PHYS _IOW(UINPUT_IOCTL_BASE, 108, char*)
#define UI_SET_SWBIT _IOW(UINPUT_IOCTL_BASE, 109, int)
#define UI_SET_PROPBIT _IOW(UINPUT_IOCTL_BASE, 110, int)
#define UI_BEGIN_FF_UPLOAD _IOWR(UINPUT_IOCTL_BASE, 200, struct uinput_ff_upload)
#define UI_END_FF_UPLOAD _IOW(UINPUT_IOCTL_BASE, 201, struct uinput_ff_upload)