提交 5d892665 编写于 作者: D Daniel Ritz 提交者: Greg Kroah-Hartman

usbtouchscreen: version 0.4

changes over 0.3:
- some more eGalax device IDs (from eGalax driver/spec)
- return the error code in probe()
- 3M/MTouch init fixes, tested by Don Alexander
- eGalax fixes for bugs in multi-packet handling, spottet by Pieter Grimmerink
- support for some eTurboTouch devices, mostly by Pieter Grimmerink
- support for Gunze AHL61 controller (untested, but simple enough)
Signed-off-by: NDaniel Ritz <daniel.ritz@gmx.ch>
Cc: Pieter Grimmerink <p.grimmerink@inepro.com>
Cc: Don Alexander <debug@roosoft.ltd.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 d388dab7
......@@ -205,10 +205,12 @@ config USB_TOUCHSCREEN
depends on USB && INPUT
---help---
USB Touchscreen driver for:
- eGalax Touchkit USB
- eGalax Touchkit USB (also includes eTurboTouch CT-410/510/700)
- PanJit TouchSet USB
- 3M MicroTouch USB
- 3M MicroTouch USB (EX II series)
- ITM
- some other eTurboTouch
- Gunze AHL61
Have a look at <http://linux.chapter7.ch/touchkit/> for
a usage description and the required user-space stuff.
......@@ -218,7 +220,7 @@ config USB_TOUCHSCREEN
config USB_TOUCHSCREEN_EGALAX
default y
bool "eGalax device support" if EMBEDDED
bool "eGalax, eTurboTouch CT-410/510/700 device support" if EMBEDDED
depends on USB_TOUCHSCREEN
config USB_TOUCHSCREEN_PANJIT
......@@ -228,7 +230,7 @@ config USB_TOUCHSCREEN_PANJIT
config USB_TOUCHSCREEN_3M
default y
bool "3M/Microtouch device support" if EMBEDDED
bool "3M/Microtouch EX II series device support" if EMBEDDED
depends on USB_TOUCHSCREEN
config USB_TOUCHSCREEN_ITM
......@@ -236,6 +238,16 @@ config USB_TOUCHSCREEN_ITM
bool "ITM device support" if EMBEDDED
depends on USB_TOUCHSCREEN
config USB_TOUCHSCREEN_ETURBO
default y
bool "eTurboTouch (non-eGalax compatible) device support" if EMBEDDED
depends on USB_TOUCHSCREEN
config USB_TOUCHSCREEN_GUNZE
default y
bool "Gunze AHL61 device support" if EMBEDDED
depends on USB_TOUCHSCREEN
config USB_YEALINK
tristate "Yealink usb-p1k voip phone"
depends on USB && INPUT && EXPERIMENTAL
......
......@@ -2,9 +2,12 @@
* usbtouchscreen.c
* Driver for USB Touchscreens, supporting those devices:
* - eGalax Touchkit
* - 3M/Microtouch
* includes eTurboTouch CT-410/510/700
* - 3M/Microtouch EX II series
* - ITM
* - PanJit TouchSet
* - eTurboTouch
* - Gunze AHL61
*
* Copyright (C) 2004-2006 by Daniel Ritz <daniel.ritz@gmx.ch>
* Copyright (C) by Todd E. Johnson (mtouchusb.c)
......@@ -42,7 +45,7 @@
#include <linux/usb/input.h>
#define DRIVER_VERSION "v0.3"
#define DRIVER_VERSION "v0.4"
#define DRIVER_AUTHOR "Daniel Ritz <daniel.ritz@gmx.ch>"
#define DRIVER_DESC "USB Touchscreen Driver"
......@@ -60,6 +63,7 @@ struct usbtouch_device_info {
int flags;
void (*process_pkt) (struct usbtouch_usb *usbtouch, struct pt_regs *regs, unsigned char *pkt, int len);
int (*get_pkt_len) (unsigned char *pkt, int len);
int (*read_data) (unsigned char *pkt, int *x, int *y, int *touch, int *press);
int (*init) (struct usbtouch_usb *usbtouch);
};
......@@ -81,8 +85,16 @@ struct usbtouch_usb {
char phys[64];
};
static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
struct pt_regs *regs, unsigned char *pkt, int len);
#if defined(CONFIG_USB_TOUCHSCREEN_EGALAX) || defined(CONFIG_USB_TOUCHSCREEN_ETURBO)
#define MULTI_PACKET
#endif
#ifdef MULTI_PACKET
static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
struct pt_regs *regs,
unsigned char *pkt, int len);
#endif
/* device types */
enum {
......@@ -91,14 +103,19 @@ enum {
DEVTYPE_PANJIT,
DEVTYPE_3M,
DEVTYPE_ITM,
DEVTYPE_ETURBO,
DEVTYPE_GUNZE,
};
static struct usb_device_id usbtouch_devices[] = {
#ifdef CONFIG_USB_TOUCHSCREEN_EGALAX
{USB_DEVICE(0x3823, 0x0001), .driver_info = DEVTYPE_EGALAX},
{USB_DEVICE(0x3823, 0x0002), .driver_info = DEVTYPE_EGALAX},
{USB_DEVICE(0x0123, 0x0001), .driver_info = DEVTYPE_EGALAX},
{USB_DEVICE(0x0eef, 0x0001), .driver_info = DEVTYPE_EGALAX},
{USB_DEVICE(0x0eef, 0x0002), .driver_info = DEVTYPE_EGALAX},
{USB_DEVICE(0x1234, 0x0001), .driver_info = DEVTYPE_EGALAX},
{USB_DEVICE(0x1234, 0x0002), .driver_info = DEVTYPE_EGALAX},
#endif
#ifdef CONFIG_USB_TOUCHSCREEN_PANJIT
......@@ -116,6 +133,14 @@ static struct usb_device_id usbtouch_devices[] = {
{USB_DEVICE(0x0403, 0xf9e9), .driver_info = DEVTYPE_ITM},
#endif
#ifdef CONFIG_USB_TOUCHSCREEN_ETURBO
{USB_DEVICE(0x1234, 0x5678), .driver_info = DEVTYPE_ETURBO},
#endif
#ifdef CONFIG_USB_TOUCHSCREEN_GUNZE
{USB_DEVICE(0x0637, 0x0001), .driver_info = DEVTYPE_GUNZE},
#endif
{}
};
......@@ -140,82 +165,23 @@ static int egalax_read_data(unsigned char *pkt, int *x, int *y, int *touch, int
*touch = pkt[0] & 0x01;
return 1;
}
static int egalax_get_pkt_len(unsigned char *buf)
static int egalax_get_pkt_len(unsigned char *buf, int len)
{
switch (buf[0] & EGALAX_PKT_TYPE_MASK) {
case EGALAX_PKT_TYPE_REPT:
return 5;
case EGALAX_PKT_TYPE_DIAG:
if (len < 2)
return -1;
return buf[1] + 2;
}
return 0;
}
static void egalax_process(struct usbtouch_usb *usbtouch, struct pt_regs *regs,
unsigned char *pkt, int len)
{
unsigned char *buffer;
int pkt_len, buf_len, pos;
/* if the buffer contains data, append */
if (unlikely(usbtouch->buf_len)) {
int tmp;
/* if only 1 byte in buffer, add another one to get length */
if (usbtouch->buf_len == 1)
usbtouch->buffer[1] = pkt[0];
pkt_len = egalax_get_pkt_len(usbtouch->buffer);
/* unknown packet: drop everything */
if (!pkt_len)
return;
/* append, process */
tmp = pkt_len - usbtouch->buf_len;
memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
usbtouch_process_pkt(usbtouch, regs, usbtouch->buffer, pkt_len);
buffer = pkt + tmp;
buf_len = len - tmp;
} else {
buffer = pkt;
buf_len = len;
}
/* only one byte left in buffer */
if (unlikely(buf_len == 1)) {
usbtouch->buffer[0] = buffer[0];
usbtouch->buf_len = 1;
return;
}
/* loop over the buffer */
pos = 0;
while (pos < buf_len) {
/* get packet len */
pkt_len = egalax_get_pkt_len(buffer + pos);
/* unknown packet: drop everything */
if (unlikely(!pkt_len))
return;
/* full packet: process */
if (likely(pkt_len <= buf_len)) {
usbtouch_process_pkt(usbtouch, regs, buffer + pos, pkt_len);
} else {
/* incomplete packet: save in buffer */
memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
usbtouch->buf_len = buf_len - pos;
}
pos += pkt_len;
}
}
#endif
......@@ -254,7 +220,7 @@ static int mtouch_read_data(unsigned char *pkt, int *x, int *y, int *touch, int
static int mtouch_init(struct usbtouch_usb *usbtouch)
{
int ret;
int ret, i;
ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
MTOUCHUSB_RESET,
......@@ -264,15 +230,20 @@ static int mtouch_init(struct usbtouch_usb *usbtouch)
__FUNCTION__, ret);
if (ret < 0)
return ret;
ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
MTOUCHUSB_ASYNC_REPORT,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
__FUNCTION__, ret);
if (ret < 0)
return ret;
msleep(150);
for (i = 0; i < 3; i++) {
ret = usb_control_msg(usbtouch->udev, usb_rcvctrlpipe(usbtouch->udev, 0),
MTOUCHUSB_ASYNC_REPORT,
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
1, 1, NULL, 0, USB_CTRL_SET_TIMEOUT);
dbg("%s - usb_control_msg - MTOUCHUSB_ASYNC_REPORT - bytes|err: %d",
__FUNCTION__, ret);
if (ret >= 0)
break;
if (ret != -EPIPE)
return ret;
}
return 0;
}
......@@ -295,6 +266,54 @@ static int itm_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *pr
#endif
/*****************************************************************************
* eTurboTouch part
*/
#ifdef CONFIG_USB_TOUCHSCREEN_ETURBO
static int eturbo_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press)
{
unsigned int shift;
/* packets should start with sync */
if (!(pkt[0] & 0x80))
return 0;
shift = (6 - (pkt[0] & 0x03));
*x = ((pkt[3] << 7) | pkt[4]) >> shift;
*y = ((pkt[1] << 7) | pkt[2]) >> shift;
*touch = (pkt[0] & 0x10) ? 1 : 0;
return 1;
}
static int eturbo_get_pkt_len(unsigned char *buf, int len)
{
if (buf[0] & 0x80)
return 5;
if (buf[0] == 0x01)
return 3;
return 0;
}
#endif
/*****************************************************************************
* Gunze part
*/
#ifdef CONFIG_USB_TOUCHSCREEN_GUNZE
static int gunze_read_data(unsigned char *pkt, int *x, int *y, int *touch, int *press)
{
if (!(pkt[0] & 0x80) || ((pkt[1] | pkt[2] | pkt[3]) & 0x80))
return 0;
*x = ((pkt[0] & 0x1F) << 7) | (pkt[2] & 0x7F);
*y = ((pkt[1] & 0x1F) << 7) | (pkt[3] & 0x7F);
*touch = pkt[0] & 0x20;
return 1;
}
#endif
/*****************************************************************************
* the different device descriptors
*/
......@@ -307,7 +326,8 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.max_yc = 0x07ff,
.rept_size = 16,
.flags = USBTOUCH_FLG_BUFFER,
.process_pkt = egalax_process,
.process_pkt = usbtouch_process_multi,
.get_pkt_len = egalax_get_pkt_len,
.read_data = egalax_read_data,
},
#endif
......@@ -346,6 +366,31 @@ static struct usbtouch_device_info usbtouch_dev_info[] = {
.read_data = itm_read_data,
},
#endif
#ifdef CONFIG_USB_TOUCHSCREEN_ETURBO
[DEVTYPE_ETURBO] = {
.min_xc = 0x0,
.max_xc = 0x07ff,
.min_yc = 0x0,
.max_yc = 0x07ff,
.rept_size = 8,
.flags = USBTOUCH_FLG_BUFFER,
.process_pkt = usbtouch_process_multi,
.get_pkt_len = eturbo_get_pkt_len,
.read_data = eturbo_read_data,
},
#endif
#ifdef CONFIG_USB_TOUCHSCREEN_GUNZE
[DEVTYPE_GUNZE] = {
.min_xc = 0x0,
.max_xc = 0x0fff,
.min_yc = 0x0,
.max_yc = 0x0fff,
.rept_size = 4,
.read_data = gunze_read_data,
},
#endif
};
......@@ -377,6 +422,83 @@ static void usbtouch_process_pkt(struct usbtouch_usb *usbtouch,
}
#ifdef MULTI_PACKET
static void usbtouch_process_multi(struct usbtouch_usb *usbtouch,
struct pt_regs *regs,
unsigned char *pkt, int len)
{
unsigned char *buffer;
int pkt_len, pos, buf_len, tmp;
/* process buffer */
if (unlikely(usbtouch->buf_len)) {
/* try to get size */
pkt_len = usbtouch->type->get_pkt_len(
usbtouch->buffer, usbtouch->buf_len);
/* drop? */
if (unlikely(!pkt_len))
goto out_flush_buf;
/* need to append -pkt_len bytes before able to get size */
if (unlikely(pkt_len < 0)) {
int append = -pkt_len;
if (unlikely(append > len))
append = len;
if (usbtouch->buf_len + append >= usbtouch->type->rept_size)
goto out_flush_buf;
memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, append);
usbtouch->buf_len += append;
pkt_len = usbtouch->type->get_pkt_len(
usbtouch->buffer, usbtouch->buf_len);
if (pkt_len < 0)
return;
}
/* append */
tmp = pkt_len - usbtouch->buf_len;
if (usbtouch->buf_len + tmp >= usbtouch->type->rept_size)
goto out_flush_buf;
memcpy(usbtouch->buffer + usbtouch->buf_len, pkt, tmp);
usbtouch_process_pkt(usbtouch, regs, usbtouch->buffer, pkt_len);
buffer = pkt + tmp;
buf_len = len - tmp;
} else {
buffer = pkt;
buf_len = len;
}
/* loop over the received packet, process */
pos = 0;
while (pos < buf_len) {
/* get packet len */
pkt_len = usbtouch->type->get_pkt_len(buffer + pos, len);
/* unknown packet: drop everything */
if (unlikely(!pkt_len))
goto out_flush_buf;
/* full packet: process */
if (likely((pkt_len > 0) && (pkt_len <= buf_len - pos))) {
usbtouch_process_pkt(usbtouch, regs, buffer + pos, pkt_len);
} else {
/* incomplete packet: save in buffer */
memcpy(usbtouch->buffer, buffer + pos, buf_len - pos);
usbtouch->buf_len = buf_len - pos;
return;
}
pos += pkt_len;
}
out_flush_buf:
usbtouch->buf_len = 0;
return;
}
#endif
static void usbtouch_irq(struct urb *urb, struct pt_regs *regs)
{
struct usbtouch_usb *usbtouch = urb->context;
......@@ -452,7 +574,7 @@ static int usbtouch_probe(struct usb_interface *intf,
struct usb_endpoint_descriptor *endpoint;
struct usb_device *udev = interface_to_usbdev(intf);
struct usbtouch_device_info *type;
int err;
int err = -ENOMEM;
interface = intf->cur_altsetting;
endpoint = &interface->endpoint[0].desc;
......@@ -526,6 +648,7 @@ static int usbtouch_probe(struct usb_interface *intf,
usbtouch->data, type->rept_size,
usbtouch_irq, usbtouch, endpoint->bInterval);
usbtouch->irq->dev = usbtouch->udev;
usbtouch->irq->transfer_dma = usbtouch->data_dma;
usbtouch->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
......@@ -553,7 +676,7 @@ static int usbtouch_probe(struct usb_interface *intf,
out_free:
input_free_device(input_dev);
kfree(usbtouch);
return -ENOMEM;
return err;
}
static void usbtouch_disconnect(struct usb_interface *intf)
......
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