* 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)
#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"
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);
};
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 {
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
{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
+
{}
};
*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
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,
__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;
}
#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
*/
.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
.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
};
}
+#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;
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;
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;
out_free:
input_free_device(input_dev);
kfree(usbtouch);
- return -ENOMEM;
+ return err;
}
static void usbtouch_disconnect(struct usb_interface *intf)
projects / linux-2.6 / commitdiff