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path: root/drivers/input/tablet/gtco.c
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Diffstat (limited to 'drivers/input/tablet/gtco.c')
-rw-r--r--drivers/input/tablet/gtco.c198
1 files changed, 87 insertions, 111 deletions
diff --git a/drivers/input/tablet/gtco.c b/drivers/input/tablet/gtco.c
index d2c6da26472..858045694e9 100644
--- a/drivers/input/tablet/gtco.c
+++ b/drivers/input/tablet/gtco.c
@@ -2,8 +2,6 @@
GTCO digitizer USB driver
-Use the err(), dbg() and info() macros from usb.h for system logging
-
TO CHECK: Is pressure done right on report 5?
Copyright (C) 2006 GTCO CalComp
@@ -55,7 +53,6 @@ Scott Hill shill@gtcocalcomp.com
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/errno.h>
-#include <linux/init.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/usb.h>
@@ -64,7 +61,6 @@ Scott Hill shill@gtcocalcomp.com
#include <asm/byteorder.h>
-#include <linux/version.h>
#include <linux/usb/input.h>
/* Version with a Major number of 2 is for kernel inclusion only. */
@@ -93,7 +89,7 @@ Scott Hill shill@gtcocalcomp.com
/* DATA STRUCTURES */
/* Device table */
-static struct usb_device_id gtco_usbid_table [] = {
+static const struct usb_device_id gtco_usbid_table[] = {
{ USB_DEVICE(VENDOR_ID_GTCO, PID_400) },
{ USB_DEVICE(VENDOR_ID_GTCO, PID_401) },
{ USB_DEVICE(VENDOR_ID_GTCO, PID_1000) },
@@ -109,6 +105,7 @@ struct gtco {
struct input_dev *inputdevice; /* input device struct pointer */
struct usb_device *usbdev; /* the usb device for this device */
+ struct usb_interface *intf; /* the usb interface for this device */
struct urb *urbinfo; /* urb for incoming reports */
dma_addr_t buf_dma; /* dma addr of the data buffer*/
unsigned char * buffer; /* databuffer for reports */
@@ -203,6 +200,7 @@ struct hid_descriptor
static void parse_hid_report_descriptor(struct gtco *device, char * report,
int length)
{
+ struct device *ddev = &device->intf->dev;
int x, i = 0;
/* Tag primitive vars */
@@ -229,7 +227,7 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
char indentstr[10] = "";
- dbg("======>>>>>>PARSE<<<<<<======");
+ dev_dbg(ddev, "======>>>>>>PARSE<<<<<<======\n");
/* Walk this report and pull out the info we need */
while (i < length) {
@@ -245,11 +243,11 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
data = report[i];
break;
case 2:
- data16 = le16_to_cpu(get_unaligned((__le16 *)&report[i]));
+ data16 = get_unaligned_le16(&report[i]);
break;
case 3:
size = 4;
- data32 = le32_to_cpu(get_unaligned((__le32 *)&report[i]));
+ data32 = get_unaligned_le32(&report[i]);
break;
}
@@ -278,11 +276,11 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
else if (data == 3)
strcpy(globtype, "Var|Const");
- dbg("::::: Saving Report: %d input #%d Max: 0x%X(%d) Min:0x%X(%d) of %d bits",
- globalval[TAG_GLOB_REPORT_ID], inputnum,
- globalval[TAG_GLOB_LOG_MAX], globalval[TAG_GLOB_LOG_MAX],
- globalval[TAG_GLOB_LOG_MIN], globalval[TAG_GLOB_LOG_MIN],
- globalval[TAG_GLOB_REPORT_SZ] * globalval[TAG_GLOB_REPORT_CNT]);
+ dev_dbg(ddev, "::::: Saving Report: %d input #%d Max: 0x%X(%d) Min:0x%X(%d) of %d bits\n",
+ globalval[TAG_GLOB_REPORT_ID], inputnum,
+ globalval[TAG_GLOB_LOG_MAX], globalval[TAG_GLOB_LOG_MAX],
+ globalval[TAG_GLOB_LOG_MIN], globalval[TAG_GLOB_LOG_MIN],
+ globalval[TAG_GLOB_REPORT_SZ] * globalval[TAG_GLOB_REPORT_CNT]);
/*
@@ -293,7 +291,7 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
*/
switch (inputnum) {
case 0: /* X coord */
- dbg("GER: X Usage: 0x%x", usage);
+ dev_dbg(ddev, "GER: X Usage: 0x%x\n", usage);
if (device->max_X == 0) {
device->max_X = globalval[TAG_GLOB_LOG_MAX];
device->min_X = globalval[TAG_GLOB_LOG_MIN];
@@ -301,7 +299,7 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
break;
case 1: /* Y coord */
- dbg("GER: Y Usage: 0x%x", usage);
+ dev_dbg(ddev, "GER: Y Usage: 0x%x\n", usage);
if (device->max_Y == 0) {
device->max_Y = globalval[TAG_GLOB_LOG_MAX];
device->min_Y = globalval[TAG_GLOB_LOG_MIN];
@@ -351,10 +349,10 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
maintype = 'S';
if (data == 0) {
- dbg("======>>>>>> Physical");
+ dev_dbg(ddev, "======>>>>>> Physical\n");
strcpy(globtype, "Physical");
} else
- dbg("======>>>>>>");
+ dev_dbg(ddev, "======>>>>>>\n");
/* Indent the debug output */
indent++;
@@ -369,7 +367,7 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
break;
case TAG_MAIN_COL_END:
- dbg("<<<<<<======");
+ dev_dbg(ddev, "<<<<<<======\n");
maintype = 'E';
indent--;
for (x = 0; x < indent; x++)
@@ -385,18 +383,18 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
switch (size) {
case 1:
- dbg("%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x",
- indentstr, tag, maintype, size, globtype, data);
+ dev_dbg(ddev, "%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x\n",
+ indentstr, tag, maintype, size, globtype, data);
break;
case 2:
- dbg("%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x",
- indentstr, tag, maintype, size, globtype, data16);
+ dev_dbg(ddev, "%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x\n",
+ indentstr, tag, maintype, size, globtype, data16);
break;
case 4:
- dbg("%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x",
- indentstr, tag, maintype, size, globtype, data32);
+ dev_dbg(ddev, "%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x\n",
+ indentstr, tag, maintype, size, globtype, data32);
break;
}
break;
@@ -466,26 +464,26 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
if (tag < TAG_GLOB_MAX) {
switch (size) {
case 1:
- dbg("%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x",
- indentstr, globtype, tag, size, data);
+ dev_dbg(ddev, "%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x\n",
+ indentstr, globtype, tag, size, data);
globalval[tag] = data;
break;
case 2:
- dbg("%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x",
- indentstr, globtype, tag, size, data16);
+ dev_dbg(ddev, "%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x\n",
+ indentstr, globtype, tag, size, data16);
globalval[tag] = data16;
break;
case 4:
- dbg("%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x",
- indentstr, globtype, tag, size, data32);
+ dev_dbg(ddev, "%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x\n",
+ indentstr, globtype, tag, size, data32);
globalval[tag] = data32;
break;
}
} else {
- dbg("%sGLOBALTAG: ILLEGAL TAG:%d SIZE: %d ",
- indentstr, tag, size);
+ dev_dbg(ddev, "%sGLOBALTAG: ILLEGAL TAG:%d SIZE: %d\n",
+ indentstr, tag, size);
}
break;
@@ -512,18 +510,18 @@ static void parse_hid_report_descriptor(struct gtco *device, char * report,
switch (size) {
case 1:
- dbg("%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x",
- indentstr, tag, globtype, size, data);
+ dev_dbg(ddev, "%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x\n",
+ indentstr, tag, globtype, size, data);
break;
case 2:
- dbg("%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x",
- indentstr, tag, globtype, size, data16);
+ dev_dbg(ddev, "%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x\n",
+ indentstr, tag, globtype, size, data16);
break;
case 4:
- dbg("%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x",
- indentstr, tag, globtype, size, data32);
+ dev_dbg(ddev, "%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x\n",
+ indentstr, tag, globtype, size, data32);
break;
}
@@ -695,10 +693,10 @@ static void gtco_urb_callback(struct urb *urbinfo)
/* Fall thru */
case 1:
/* All reports have X and Y coords in the same place */
- val = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[1]));
+ val = get_unaligned_le16(&device->buffer[1]);
input_report_abs(inputdev, ABS_X, val);
- val = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[3]));
+ val = get_unaligned_le16(&device->buffer[3]);
input_report_abs(inputdev, ABS_Y, val);
/* Ditto for proximity bit */
@@ -715,8 +713,9 @@ static void gtco_urb_callback(struct urb *urbinfo)
* the rest as 0
*/
val = device->buffer[5] & MASK_BUTTON;
- dbg("======>>>>>>REPORT 1: val 0x%X(%d)",
- val, val);
+ dev_dbg(&device->intf->dev,
+ "======>>>>>>REPORT 1: val 0x%X(%d)\n",
+ val, val);
/*
* We don't apply any meaning to the button
@@ -762,7 +761,7 @@ static void gtco_urb_callback(struct urb *urbinfo)
le_buffer[1] = (u8)(device->buffer[4] >> 1);
le_buffer[1] |= (u8)((device->buffer[5] & 0x1) << 7);
- val = le16_to_cpu(get_unaligned((__le16 *)le_buffer));
+ val = get_unaligned_le16(le_buffer);
input_report_abs(inputdev, ABS_Y, val);
/*
@@ -772,10 +771,10 @@ static void gtco_urb_callback(struct urb *urbinfo)
buttonbyte = device->buffer[5] >> 1;
} else {
- val = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[1]));
+ val = get_unaligned_le16(&device->buffer[1]);
input_report_abs(inputdev, ABS_X, val);
- val = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[3]));
+ val = get_unaligned_le16(&device->buffer[3]);
input_report_abs(inputdev, ABS_Y, val);
buttonbyte = device->buffer[5];
@@ -809,7 +808,8 @@ static void gtco_urb_callback(struct urb *urbinfo)
resubmit:
rc = usb_submit_urb(urbinfo, GFP_ATOMIC);
if (rc != 0)
- err("usb_submit_urb failed rc=0x%x", rc);
+ dev_err(&device->intf->dev,
+ "usb_submit_urb failed rc=0x%x\n", rc);
}
/*
@@ -830,7 +830,7 @@ static int gtco_probe(struct usb_interface *usbinterface,
struct gtco *gtco;
struct input_dev *input_dev;
struct hid_descriptor *hid_desc;
- char *report = NULL;
+ char *report;
int result = 0, retry;
int error;
struct usb_endpoint_descriptor *endpoint;
@@ -839,7 +839,7 @@ static int gtco_probe(struct usb_interface *usbinterface,
gtco = kzalloc(sizeof(struct gtco), GFP_KERNEL);
input_dev = input_allocate_device();
if (!gtco || !input_dev) {
- err("No more memory");
+ dev_err(&usbinterface->dev, "No more memory\n");
error = -ENOMEM;
goto err_free_devs;
}
@@ -848,13 +848,14 @@ static int gtco_probe(struct usb_interface *usbinterface,
gtco->inputdevice = input_dev;
/* Save interface information */
- gtco->usbdev = usb_get_dev(interface_to_usbdev(usbinterface));
+ gtco->usbdev = interface_to_usbdev(usbinterface);
+ gtco->intf = usbinterface;
/* Allocate some data for incoming reports */
- gtco->buffer = usb_buffer_alloc(gtco->usbdev, REPORT_MAX_SIZE,
- GFP_KERNEL, &gtco->buf_dma);
+ gtco->buffer = usb_alloc_coherent(gtco->usbdev, REPORT_MAX_SIZE,
+ GFP_KERNEL, &gtco->buf_dma);
if (!gtco->buffer) {
- err("No more memory for us buffers");
+ dev_err(&usbinterface->dev, "No more memory for us buffers\n");
error = -ENOMEM;
goto err_free_devs;
}
@@ -862,8 +863,8 @@ static int gtco_probe(struct usb_interface *usbinterface,
/* Allocate URB for reports */
gtco->urbinfo = usb_alloc_urb(0, GFP_KERNEL);
if (!gtco->urbinfo) {
- err("Failed to allocate URB");
- return -ENOMEM;
+ dev_err(&usbinterface->dev, "Failed to allocate URB\n");
+ error = -ENOMEM;
goto err_free_buf;
}
@@ -874,14 +875,14 @@ static int gtco_probe(struct usb_interface *usbinterface,
endpoint = &usbinterface->altsetting[0].endpoint[0].desc;
/* Some debug */
- dbg("gtco # interfaces: %d", usbinterface->num_altsetting);
- dbg("num endpoints: %d", usbinterface->cur_altsetting->desc.bNumEndpoints);
- dbg("interface class: %d", usbinterface->cur_altsetting->desc.bInterfaceClass);
- dbg("endpoint: attribute:0x%x type:0x%x", endpoint->bmAttributes, endpoint->bDescriptorType);
- if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)
- dbg("endpoint: we have interrupt endpoint\n");
+ dev_dbg(&usbinterface->dev, "gtco # interfaces: %d\n", usbinterface->num_altsetting);
+ dev_dbg(&usbinterface->dev, "num endpoints: %d\n", usbinterface->cur_altsetting->desc.bNumEndpoints);
+ dev_dbg(&usbinterface->dev, "interface class: %d\n", usbinterface->cur_altsetting->desc.bInterfaceClass);
+ dev_dbg(&usbinterface->dev, "endpoint: attribute:0x%x type:0x%x\n", endpoint->bmAttributes, endpoint->bDescriptorType);
+ if (usb_endpoint_xfer_int(endpoint))
+ dev_dbg(&usbinterface->dev, "endpoint: we have interrupt endpoint\n");
- dbg("endpoint extra len:%d ", usbinterface->altsetting[0].extralen);
+ dev_dbg(&usbinterface->dev, "endpoint extra len:%d\n", usbinterface->altsetting[0].extralen);
/*
* Find the HID descriptor so we can find out the size of the
@@ -889,17 +890,19 @@ static int gtco_probe(struct usb_interface *usbinterface,
*/
if (usb_get_extra_descriptor(usbinterface->cur_altsetting,
HID_DEVICE_TYPE, &hid_desc) != 0){
- err("Can't retrieve exta USB descriptor to get hid report descriptor length");
+ dev_err(&usbinterface->dev,
+ "Can't retrieve exta USB descriptor to get hid report descriptor length\n");
error = -EIO;
goto err_free_urb;
}
- dbg("Extra descriptor success: type:%d len:%d",
- hid_desc->bDescriptorType, hid_desc->wDescriptorLength);
+ dev_dbg(&usbinterface->dev,
+ "Extra descriptor success: type:%d len:%d\n",
+ hid_desc->bDescriptorType, hid_desc->wDescriptorLength);
- report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
+ report = kzalloc(le16_to_cpu(hid_desc->wDescriptorLength), GFP_KERNEL);
if (!report) {
- err("No more memory for report");
+ dev_err(&usbinterface->dev, "No more memory for report\n");
error = -ENOMEM;
goto err_free_urb;
}
@@ -913,28 +916,27 @@ static int gtco_probe(struct usb_interface *usbinterface,
REPORT_DEVICE_TYPE << 8,
0, /* interface */
report,
- hid_desc->wDescriptorLength,
+ le16_to_cpu(hid_desc->wDescriptorLength),
5000); /* 5 secs */
- if (result == hid_desc->wDescriptorLength)
+ dev_dbg(&usbinterface->dev, "usb_control_msg result: %d\n", result);
+ if (result == le16_to_cpu(hid_desc->wDescriptorLength)) {
+ parse_hid_report_descriptor(gtco, report, result);
break;
+ }
}
+ kfree(report);
+
/* If we didn't get the report, fail */
- dbg("usb_control_msg result: :%d", result);
- if (result != hid_desc->wDescriptorLength) {
- err("Failed to get HID Report Descriptor of size: %d",
- hid_desc->wDescriptorLength);
+ if (result != le16_to_cpu(hid_desc->wDescriptorLength)) {
+ dev_err(&usbinterface->dev,
+ "Failed to get HID Report Descriptor of size: %d\n",
+ hid_desc->wDescriptorLength);
error = -EIO;
goto err_free_urb;
}
- /* Now we parse the report */
- parse_hid_report_descriptor(gtco, report, result);
-
- /* Now we delete it */
- kfree(report);
-
/* Create a device file node */
usb_make_path(gtco->usbdev, gtco->usbpath, sizeof(gtco->usbpath));
strlcat(gtco->usbpath, "/input0", sizeof(gtco->usbpath));
@@ -985,10 +987,9 @@ static int gtco_probe(struct usb_interface *usbinterface,
err_free_urb:
usb_free_urb(gtco->urbinfo);
err_free_buf:
- usb_buffer_free(gtco->usbdev, REPORT_MAX_SIZE,
- gtco->buffer, gtco->buf_dma);
+ usb_free_coherent(gtco->usbdev, REPORT_MAX_SIZE,
+ gtco->buffer, gtco->buf_dma);
err_free_devs:
- kfree(report);
input_free_device(input_dev);
kfree(gtco);
return error;
@@ -1009,12 +1010,12 @@ static void gtco_disconnect(struct usb_interface *interface)
input_unregister_device(gtco->inputdevice);
usb_kill_urb(gtco->urbinfo);
usb_free_urb(gtco->urbinfo);
- usb_buffer_free(gtco->usbdev, REPORT_MAX_SIZE,
- gtco->buffer, gtco->buf_dma);
+ usb_free_coherent(gtco->usbdev, REPORT_MAX_SIZE,
+ gtco->buffer, gtco->buf_dma);
kfree(gtco);
}
- info("gtco driver disconnected");
+ dev_info(&interface->dev, "gtco driver disconnected\n");
}
/* STANDARD MODULE LOAD ROUTINES */
@@ -1026,32 +1027,7 @@ static struct usb_driver gtco_driverinfo_table = {
.disconnect = gtco_disconnect,
};
-/*
- * Register this module with the USB subsystem
- */
-static int __init gtco_init(void)
-{
- int error;
-
- error = usb_register(&gtco_driverinfo_table);
- if (error) {
- err("usb_register() failed rc=0x%x", error);
- return error;
- }
-
- printk("GTCO usb driver version: %s", GTCO_VERSION);
- return 0;
-}
-
-/*
- * Deregister this module with the USB subsystem
- */
-static void __exit gtco_exit(void)
-{
- usb_deregister(&gtco_driverinfo_table);
-}
-
-module_init(gtco_init);
-module_exit(gtco_exit);
+module_usb_driver(gtco_driverinfo_table);
+MODULE_DESCRIPTION("GTCO digitizer USB driver");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 06:13:28 +0000