/*
- *
* This is an abbreviated parser for the HID Report Descriptor. We
* know what devices we are talking to, so this is by no means meant
* to be generic. We can make some safe assumptions:
static void parse_hid_report_descriptor(struct gtco *device, char * report,
int length)
{
- int x,i=0;
+ int x, i = 0;
/* Tag primitive vars */
__u8 prefix;
__u16 data16 = 0;
__u32 data32 = 0;
-
/* For parsing logic */
int inputnum = 0;
__u32 usage = 0;
/* Debug stuff */
char maintype='x';
char globtype[12];
- int indent=0;
- char indentstr[10]="";
-
+ int indent = 0;
+ char indentstr[10] = "";
dbg("======>>>>>>PARSE<<<<<<======");
/* Walk this report and pull out the info we need */
- while (i<length){
- prefix=report[i];
+ while (i < length) {
+ prefix = report[i];
/* Skip over prefix */
i++;
/* Determine data size and save the data in the proper variable */
size = PREF_SIZE(prefix);
- switch(size){
+ switch (size) {
case 1:
data = report[i];
break;
case 2:
- data16 = le16_to_cpu(get_unaligned((__le16*)(&(report[i]))));
+ data16 = le16_to_cpu(get_unaligned((__le16 *)&report[i]));
break;
case 3:
size = 4;
- data32 = le32_to_cpu(get_unaligned((__le32*)(&(report[i]))));
+ data32 = le32_to_cpu(get_unaligned((__le32 *)&report[i]));
+ break;
}
/* Skip size of data */
- i+=size;
+ i += size;
/* What we do depends on the tag type */
tag = PREF_TAG(prefix);
type = PREF_TYPE(prefix);
- switch(type){
+ switch (type) {
case TYPE_MAIN:
- strcpy(globtype,"");
- switch(tag){
+ strcpy(globtype, "");
+ switch (tag) {
case TAG_MAIN_INPUT:
/*
* min/max values
*/
- maintype='I';
- if (data==2){
- strcpy(globtype,"Variable");
- }
- if (data==3){
- strcpy(globtype,"Var|Const");
- }
+ maintype = 'I';
+ if (data == 2)
+ strcpy(globtype, "Variable");
+ 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]));
+ 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]);
/*
that, we look for everything else by
local usage value
*/
- switch (inputnum){
+ switch (inputnum) {
case 0: /* X coord */
- dbg("GER: X Usage: 0x%x",usage);
- if (device->max_X == 0){
+ dbg("GER: X Usage: 0x%x", usage);
+ if (device->max_X == 0) {
device->max_X = globalval[TAG_GLOB_LOG_MAX];
device->min_X = globalval[TAG_GLOB_LOG_MIN];
}
-
break;
+
case 1: /* Y coord */
- dbg("GER: Y Usage: 0x%x",usage);
- if (device->max_Y == 0){
+ dbg("GER: Y Usage: 0x%x", usage);
+ if (device->max_Y == 0) {
device->max_Y = globalval[TAG_GLOB_LOG_MAX];
device->min_Y = globalval[TAG_GLOB_LOG_MIN];
}
break;
+
default:
/* Tilt X */
- if (usage == DIGITIZER_USAGE_TILT_X){
- if (device->maxtilt_X == 0){
+ if (usage == DIGITIZER_USAGE_TILT_X) {
+ if (device->maxtilt_X == 0) {
device->maxtilt_X = globalval[TAG_GLOB_LOG_MAX];
device->mintilt_X = globalval[TAG_GLOB_LOG_MIN];
}
}
/* Tilt Y */
- if (usage == DIGITIZER_USAGE_TILT_Y){
- if (device->maxtilt_Y == 0){
+ if (usage == DIGITIZER_USAGE_TILT_Y) {
+ if (device->maxtilt_Y == 0) {
device->maxtilt_Y = globalval[TAG_GLOB_LOG_MAX];
device->mintilt_Y = globalval[TAG_GLOB_LOG_MIN];
}
}
-
/* Pressure */
- if (usage == DIGITIZER_USAGE_TIP_PRESSURE){
- if (device->maxpressure == 0){
+ if (usage == DIGITIZER_USAGE_TIP_PRESSURE) {
+ if (device->maxpressure == 0) {
device->maxpressure = globalval[TAG_GLOB_LOG_MAX];
device->minpressure = globalval[TAG_GLOB_LOG_MIN];
}
}
inputnum++;
-
-
break;
+
case TAG_MAIN_OUTPUT:
- maintype='O';
+ maintype = 'O';
break;
+
case TAG_MAIN_FEATURE:
- maintype='F';
+ maintype = 'F';
break;
+
case TAG_MAIN_COL_START:
- maintype='S';
+ maintype = 'S';
- if (data==0){
+ if (data == 0) {
dbg("======>>>>>> Physical");
- strcpy(globtype,"Physical");
- }else{
+ strcpy(globtype, "Physical");
+ } else
dbg("======>>>>>>");
- }
/* Indent the debug output */
indent++;
- for (x=0;x<indent;x++){
- indentstr[x]='-';
- }
- indentstr[x]=0;
+ for (x = 0; x < indent; x++)
+ indentstr[x] = '-';
+ indentstr[x] = 0;
/* Save global tags */
- for (x=0;x<TAG_GLOB_MAX;x++){
+ for (x = 0; x < TAG_GLOB_MAX; x++)
oldval[x] = globalval[x];
- }
break;
+
case TAG_MAIN_COL_END:
dbg("<<<<<<======");
- maintype='E';
+ maintype = 'E';
indent--;
- for (x=0;x<indent;x++){
- indentstr[x]='-';
- }
- indentstr[x]=0;
+ for (x = 0; x < indent; x++)
+ indentstr[x] = '-';
+ indentstr[x] = 0;
/* Copy global tags back */
- for (x=0;x<TAG_GLOB_MAX;x++){
+ for (x = 0; x < TAG_GLOB_MAX; x++)
globalval[x] = oldval[x];
- }
break;
}
- switch (size){
+ switch (size) {
case 1:
dbg("%sMAINTAG:(%d) %c SIZE: %d Data: %s 0x%x",
- indentstr,tag,maintype,size,globtype,data);
+ 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);
+ 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);
+ indentstr, tag, maintype, size, globtype, data32);
break;
}
break;
+
case TYPE_GLOBAL:
- switch(tag){
+ switch (tag) {
case TAG_GLOB_USAGE:
/*
* First time we hit the global usage tag,
* it should tell us the type of device
*/
- if (device->usage == 0){
+ if (device->usage == 0)
device->usage = data;
- }
- strcpy(globtype,"USAGE");
+
+ strcpy(globtype, "USAGE");
break;
- case TAG_GLOB_LOG_MIN :
- strcpy(globtype,"LOG_MIN");
+
+ case TAG_GLOB_LOG_MIN:
+ strcpy(globtype, "LOG_MIN");
break;
- case TAG_GLOB_LOG_MAX :
- strcpy(globtype,"LOG_MAX");
+
+ case TAG_GLOB_LOG_MAX:
+ strcpy(globtype, "LOG_MAX");
break;
- case TAG_GLOB_PHYS_MIN :
- strcpy(globtype,"PHYS_MIN");
+
+ case TAG_GLOB_PHYS_MIN:
+ strcpy(globtype, "PHYS_MIN");
break;
- case TAG_GLOB_PHYS_MAX :
- strcpy(globtype,"PHYS_MAX");
+
+ case TAG_GLOB_PHYS_MAX:
+ strcpy(globtype, "PHYS_MAX");
break;
- case TAG_GLOB_UNIT_EXP :
- strcpy(globtype,"EXP");
+
+ case TAG_GLOB_UNIT_EXP:
+ strcpy(globtype, "EXP");
break;
- case TAG_GLOB_UNIT :
- strcpy(globtype,"UNIT");
+
+ case TAG_GLOB_UNIT:
+ strcpy(globtype, "UNIT");
break;
- case TAG_GLOB_REPORT_SZ :
- strcpy(globtype,"REPORT_SZ");
+
+ case TAG_GLOB_REPORT_SZ:
+ strcpy(globtype, "REPORT_SZ");
break;
- case TAG_GLOB_REPORT_ID :
- strcpy(globtype,"REPORT_ID");
+
+ case TAG_GLOB_REPORT_ID:
+ strcpy(globtype, "REPORT_ID");
/* New report, restart numbering */
- inputnum=0;
+ inputnum = 0;
break;
+
case TAG_GLOB_REPORT_CNT:
- strcpy(globtype,"REPORT_CNT");
+ strcpy(globtype, "REPORT_CNT");
break;
- case TAG_GLOB_PUSH :
- strcpy(globtype,"PUSH");
+
+ case TAG_GLOB_PUSH:
+ strcpy(globtype, "PUSH");
break;
+
case TAG_GLOB_POP:
- strcpy(globtype,"POP");
+ strcpy(globtype, "POP");
break;
}
-
/* Check to make sure we have a good tag number
so we don't overflow array */
- if (tag < TAG_GLOB_MAX){
- switch (size){
+ if (tag < TAG_GLOB_MAX) {
+ switch (size) {
case 1:
- dbg("%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x",indentstr,globtype,tag,size,data);
- globalval[tag]=data;
+ dbg("%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x",
+ 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);
- globalval[tag]=data16;
+ dbg("%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x",
+ 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);
- globalval[tag]=data32;
+ dbg("%sGLOBALTAG:%s(%d) SIZE: %d Data: 0x%x",
+ indentstr, globtype, tag, size, data32);
+ globalval[tag] = data32;
break;
}
- }else{
+ } else {
dbg("%sGLOBALTAG: ILLEGAL TAG:%d SIZE: %d ",
- indentstr,tag,size);
+ indentstr, tag, size);
}
-
-
break;
case TYPE_LOCAL:
- switch(tag){
+ switch (tag) {
case TAG_GLOB_USAGE:
- strcpy(globtype,"USAGE");
+ strcpy(globtype, "USAGE");
/* Always 1 byte */
usage = data;
break;
- case TAG_GLOB_LOG_MIN :
- strcpy(globtype,"MIN");
+
+ case TAG_GLOB_LOG_MIN:
+ strcpy(globtype, "MIN");
break;
- case TAG_GLOB_LOG_MAX :
- strcpy(globtype,"MAX");
+
+ case TAG_GLOB_LOG_MAX:
+ strcpy(globtype, "MAX");
break;
+
default:
- strcpy(globtype,"UNKNOWN");
+ strcpy(globtype, "UNKNOWN");
+ break;
}
- switch (size){
+ switch (size) {
case 1:
dbg("%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x",
- indentstr,tag,globtype,size,data);
+ indentstr, tag, globtype, size, data);
break;
+
case 2:
dbg("%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x",
- indentstr,tag,globtype,size,data16);
+ indentstr, tag, globtype, size, data16);
break;
+
case 4:
dbg("%sLOCALTAG:(%d) %s SIZE: %d Data: 0x%x",
- indentstr,tag,globtype,size,data32);
+ indentstr, tag, globtype, size, data32);
break;
}
break;
}
-
}
-
}
-
-
/* INPUT DRIVER Routines */
-
/*
- * Called when opening the input device. This will submit the URB to
- * the usb system so we start getting reports
+ * Called when opening the input device. This will submit the URB to
+ * the usb system so we start getting reports
*/
static int gtco_input_open(struct input_dev *inputdev)
{
device = inputdev->private;
device->urbinfo->dev = device->usbdev;
- if (usb_submit_urb(device->urbinfo, GFP_KERNEL)) {
+ if (usb_submit_urb(device->urbinfo, GFP_KERNEL))
return -EIO;
- }
+
return 0;
}
-/**
- Called when closing the input device. This will unlink the URB
-*/
+/*
+ * Called when closing the input device. This will unlink the URB
+ */
static void gtco_input_close(struct input_dev *inputdev)
{
struct gtco *device = inputdev->private;
usb_kill_urb(device->urbinfo);
-
}
{
struct gtco *device = inputdev->private;
-
/* Which events */
inputdev->evbit[0] = BIT(EV_KEY) | BIT(EV_ABS) | BIT(EV_MSC);
-
/* Misc event menu block */
inputdev->mscbit[0] = BIT(MSC_SCAN)|BIT(MSC_SERIAL)|BIT(MSC_RAW) ;
-
/* Absolute values based on HID report info */
input_set_abs_params(inputdev, ABS_X, device->min_X, device->max_X,
0, 0);
input_set_abs_params(inputdev, ABS_PRESSURE, device->minpressure,
device->maxpressure, 0, 0);
-
/* Transducer */
- input_set_abs_params(inputdev, ABS_MISC, 0,0xFF, 0, 0);
-
+ input_set_abs_params(inputdev, ABS_MISC, 0, 0xFF, 0, 0);
}
-
-
/* USB Routines */
-
/*
* URB callback routine. Called when we get IRQ reports from the
* digitizer.
*/
static void gtco_urb_callback(struct urb *urbinfo)
{
-
-
- struct gtco *device = urbinfo->context;
+ struct gtco *device = urbinfo->context;
struct input_dev *inputdev;
int rc;
u32 val = 0;
inputdev = device->inputdevice;
-
/* Was callback OK? */
- if ((urbinfo->status == -ECONNRESET ) ||
- (urbinfo->status == -ENOENT ) ||
- (urbinfo->status == -ESHUTDOWN )){
+ if (urbinfo->status == -ECONNRESET ||
+ urbinfo->status == -ENOENT ||
+ urbinfo->status == -ESHUTDOWN) {
/* Shutdown is occurring. Return and don't queue up any more */
return;
}
- if (urbinfo->status != 0 ) {
- /* Some unknown error. Hopefully temporary. Just go and */
- /* requeue an URB */
+ if (urbinfo->status != 0) {
+ /*
+ * Some unknown error. Hopefully temporary. Just go and
+ * requeue an URB
+ */
goto resubmit;
}
*/
/* PID dependent when we interpret the report */
- if ((inputdev->id.product == PID_1000 )||
- (inputdev->id.product == PID_1001 )||
- (inputdev->id.product == PID_1002 ))
- {
+ if (inputdev->id.product == PID_1000 ||
+ inputdev->id.product == PID_1001 ||
+ inputdev->id.product == PID_1002) {
/*
* Switch on the report ID
* the report number. We can just fall through the case
* statements if we start with the highest number report
*/
- switch(device->buffer[0]){
+ switch (device->buffer[0]) {
case 5:
/* Pressure is 9 bits */
- val = ((u16)(device->buffer[8]) << 1);
+ val = ((u16)(device->buffer[8]) << 1);
val |= (u16)(device->buffer[7] >> 7);
input_report_abs(inputdev, ABS_PRESSURE,
device->buffer[8]);
/* Mask out the Y tilt value used for pressure */
device->buffer[7] = (u8)((device->buffer[7]) & 0x7F);
-
/* Fall thru */
case 4:
/* Tilt */
input_report_abs(inputdev, ABS_TILT_Y, (s32)valsigned);
/* Fall thru */
-
case 2:
case 3:
/* Convert buttons, only 5 bits possible */
- val = (device->buffer[5])&MASK_BUTTON;
+ val = (device->buffer[5]) & MASK_BUTTON;
/* We don't apply any meaning to the bitmask,
just report */
/* 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 = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[1]));
input_report_abs(inputdev, ABS_X, val);
- val = le16_to_cpu(get_unaligned((__le16 *) &(device->buffer[3])));
+ val = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[3]));
input_report_abs(inputdev, ABS_Y, val);
-
/* Ditto for proximity bit */
- if (device->buffer[5]& MASK_INRANGE){
- val = 1;
- }else{
- val=0;
- }
+ val = device->buffer[5] & MASK_INRANGE ? 1 : 0;
input_report_abs(inputdev, ABS_DISTANCE, val);
-
/* Report 1 is an exception to how we handle buttons */
/* Buttons are an index, not a bitmask */
- if (device->buffer[0] == 1){
+ if (device->buffer[0] == 1) {
- /* Convert buttons, 5 bit index */
- /* Report value of index set as one,
- the rest as 0 */
- val = device->buffer[5]& MASK_BUTTON;
+ /*
+ * Convert buttons, 5 bit index
+ * Report value of index set as one,
+ * the rest as 0
+ */
+ val = device->buffer[5] & MASK_BUTTON;
dbg("======>>>>>>REPORT 1: val 0x%X(%d)",
- val,val);
+ val, val);
/*
* We don't apply any meaning to the button
* index, just report it
*/
input_event(inputdev, EV_MSC, MSC_SERIAL, val);
-
-
}
-
break;
+
case 7:
/* Menu blocks */
input_event(inputdev, EV_MSC, MSC_SCAN,
device->buffer[1]);
-
-
break;
-
}
-
-
}
+
/* Other pid class */
- if ((inputdev->id.product == PID_400 )||
- (inputdev->id.product == PID_401 ))
- {
+ if (inputdev->id.product == PID_400 ||
+ inputdev->id.product == PID_401) {
/* Report 2 */
- if (device->buffer[0] == 2){
+ if (device->buffer[0] == 2) {
/* Menu blocks */
- input_event(inputdev, EV_MSC, MSC_SCAN,
- device->buffer[1]);
+ input_event(inputdev, EV_MSC, MSC_SCAN, device->buffer[1]);
}
/* Report 1 */
- if (device->buffer[0] == 1){
+ if (device->buffer[0] == 1) {
char buttonbyte;
-
/* IF X max > 64K, we still a bit from the y report */
- if (device->max_X > 0x10000){
+ if (device->max_X > 0x10000) {
- val = (u16)(((u16)(device->buffer[2]<<8))|((u8)(device->buffer[1])));
- val |= (u32)(((u8)device->buffer[3]&0x1)<< 16);
+ val = (u16)(((u16)(device->buffer[2] << 8)) | (u8)device->buffer[1]);
+ val |= (u32)(((u8)device->buffer[3] & 0x1) << 16);
input_report_abs(inputdev, ABS_X, val);
- le_buffer[0] = (u8)((u8)(device->buffer[3])>>1);
- le_buffer[0] |= (u8)((device->buffer[3]&0x1)<<7);
-
- le_buffer[1] = (u8)(device->buffer[4]>>1);
- le_buffer[1] |= (u8)((device->buffer[5]&0x1)<<7);
+ le_buffer[0] = (u8)((u8)(device->buffer[3]) >> 1);
+ le_buffer[0] |= (u8)((device->buffer[3] & 0x1) << 7);
- val = le16_to_cpu(get_unaligned((__le16 *)(le_buffer)));
+ 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));
input_report_abs(inputdev, ABS_Y, val);
-
/*
* Shift the button byte right by one to
* make it look like the standard report
*/
- buttonbyte = (device->buffer[5])>>1;
- }else{
+ buttonbyte = device->buffer[5] >> 1;
+ } else {
- val = le16_to_cpu(get_unaligned((__le16 *) (&(device->buffer[1]))));
+ val = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[1]));
input_report_abs(inputdev, ABS_X, val);
- val = le16_to_cpu(get_unaligned((__le16 *) (&(device->buffer[3]))));
+ val = le16_to_cpu(get_unaligned((__le16 *)&device->buffer[3]));
input_report_abs(inputdev, ABS_Y, val);
buttonbyte = device->buffer[5];
-
}
-
/* BUTTONS and PROXIMITY */
- if (buttonbyte& MASK_INRANGE){
- val = 1;
- }else{
- val=0;
- }
+ val = buttonbyte & MASK_INRANGE ? 1 : 0;
input_report_abs(inputdev, ABS_DISTANCE, val);
/* Convert buttons, only 4 bits possible */
- val = buttonbyte&0x0F;
+ val = buttonbyte & 0x0F;
#ifdef USE_BUTTONS
- for ( i=0;i<5;i++){
- input_report_key(inputdev, BTN_DIGI+i,val&(1<<i));
- }
+ for (i = 0; i < 5; i++)
+ input_report_key(inputdev, BTN_DIGI + i, val & (1 << i));
#else
/* We don't apply any meaning to the bitmask, just report */
input_event(inputdev, EV_MSC, MSC_SERIAL, val);
#endif
+
/* TRANSDUCER */
input_report_abs(inputdev, ABS_MISC, device->buffer[6]);
-
}
}
resubmit:
rc = usb_submit_urb(urbinfo, GFP_ATOMIC);
- if (rc != 0) {
- err("usb_submit_urb failed rc=0x%x",rc);
- }
-
+ if (rc != 0)
+ err("usb_submit_urb failed rc=0x%x", rc);
}
/*
const struct usb_device_id *id)
{
- struct gtco *device = NULL;
- char path[PATHLENGTH];
- struct input_dev *inputdev;
+ struct gtco *gtco;
+ struct input_dev *input_dev;
struct hid_descriptor *hid_desc;
- char *report;
- int result=0, retry;
+ char *report = NULL;
+ int result = 0, retry;
+ int error;
struct usb_endpoint_descriptor *endpoint;
/* Allocate memory for device structure */
- device = kzalloc(sizeof(struct gtco), GFP_KERNEL);
- if (device == NULL) {
+ gtco = kzalloc(sizeof(struct gtco), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!gtco || !input_dev) {
err("No more memory");
- return -ENOMEM;
+ error = -ENOMEM;
+ goto err_free_devs;
}
-
- device->inputdevice = input_allocate_device();
- if (!device->inputdevice){
- kfree(device);
- err("No more memory");
- return -ENOMEM;
- }
-
- /* Get pointer to the input device */
- inputdev = device->inputdevice;
+ /* Set pointer to the input device */
+ gtco->inputdevice = input_dev;
/* Save interface information */
- device->usbdev = usb_get_dev(interface_to_usbdev(usbinterface));
-
+ gtco->usbdev = usb_get_dev(interface_to_usbdev(usbinterface));
/* Allocate some data for incoming reports */
- device->buffer = usb_buffer_alloc(device->usbdev, REPORT_MAX_SIZE,
- GFP_KERNEL, &(device->buf_dma));
- if (!device->buffer){
- input_free_device(device->inputdevice);
- kfree(device);
- err("No more memory");
- return -ENOMEM;
+ gtco->buffer = usb_buffer_alloc(gtco->usbdev, REPORT_MAX_SIZE,
+ GFP_KERNEL, >co->buf_dma);
+ if (!gtco->buffer) {
+ err("No more memory for us buffers");
+ error = -ENOMEM;
+ goto err_free_devs;
}
/* Allocate URB for reports */
- device->urbinfo = usb_alloc_urb(0, GFP_KERNEL);
- if (!device->urbinfo) {
- usb_buffer_free(device->usbdev, REPORT_MAX_SIZE,
- device->buffer, device->buf_dma);
- input_free_device(device->inputdevice);
- kfree(device);
- err("No more memory");
+ gtco->urbinfo = usb_alloc_urb(0, GFP_KERNEL);
+ if (!gtco->urbinfo) {
+ err("Failed to allocate URB");
return -ENOMEM;
+ goto err_free_buf;
}
-
/*
* The endpoint is always altsetting 0, we know this since we know
* this device only has one interrupt endpoint
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);
+ 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");
- dbg("endpoint extra len:%d ",usbinterface->altsetting[0].extralen);
-
-
+ dbg("endpoint extra len:%d ", usbinterface->altsetting[0].extralen);
/*
* Find the HID descriptor so we can find out the size of the
* HID report descriptor
*/
if (usb_get_extra_descriptor(usbinterface->cur_altsetting,
- HID_DEVICE_TYPE,&hid_desc) != 0){
+ HID_DEVICE_TYPE, &hid_desc) != 0){
err("Can't retrieve exta USB descriptor to get hid report descriptor length");
- usb_buffer_free(device->usbdev, REPORT_MAX_SIZE,
- device->buffer, device->buf_dma);
- input_free_device(device->inputdevice);
- kfree(device);
- return -EIO;
+ error = -EIO;
+ goto err_free_urb;
}
dbg("Extra descriptor success: type:%d len:%d",
hid_desc->bDescriptorType, hid_desc->wDescriptorLength);
- if (!(report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL))) {
- usb_buffer_free(device->usbdev, REPORT_MAX_SIZE,
- device->buffer, device->buf_dma);
-
- input_free_device(device->inputdevice);
- kfree(device);
- err("No more memory");
- return -ENOMEM;
+ report = kzalloc(hid_desc->wDescriptorLength, GFP_KERNEL);
+ if (!report) {
+ err("No more memory for report");
+ error = -ENOMEM;
+ goto err_free_urb;
}
/* Couple of tries to get reply */
- for (retry=0;retry<3;retry++) {
- result = usb_control_msg(device->usbdev,
- usb_rcvctrlpipe(device->usbdev, 0),
+ for (retry = 0; retry < 3; retry++) {
+ result = usb_control_msg(gtco->usbdev,
+ usb_rcvctrlpipe(gtco->usbdev, 0),
USB_REQ_GET_DESCRIPTOR,
USB_RECIP_INTERFACE | USB_DIR_IN,
- (REPORT_DEVICE_TYPE << 8),
+ REPORT_DEVICE_TYPE << 8,
0, /* interface */
report,
hid_desc->wDescriptorLength,
/* If we didn't get the report, fail */
dbg("usb_control_msg result: :%d", result);
- if (result != hid_desc->wDescriptorLength){
- kfree(report);
- usb_buffer_free(device->usbdev, REPORT_MAX_SIZE,
- device->buffer, device->buf_dma);
- input_free_device(device->inputdevice);
- kfree(device);
+ if (result != hid_desc->wDescriptorLength) {
err("Failed to get HID Report Descriptor of size: %d",
hid_desc->wDescriptorLength);
- return -EIO;
+ error = -EIO;
+ goto err_free_urb;
}
-
/* Now we parse the report */
- parse_hid_report_descriptor(device,report,result);
+ parse_hid_report_descriptor(gtco, report, result);
/* Now we delete it */
kfree(report);
/* Create a device file node */
- usb_make_path(device->usbdev, path, PATHLENGTH);
- sprintf(device->usbpath, "%s/input0", path);
-
+ usb_make_path(gtco->usbdev, gtco->usbpath, sizeof(gtco->usbpath));
+ strlcat(gtco->usbpath, "/input0", sizeof(gtco->usbpath));
/* Set Input device functions */
- inputdev->open = gtco_input_open;
- inputdev->close = gtco_input_close;
+ input_dev->open = gtco_input_open;
+ input_dev->close = gtco_input_close;
/* Set input device information */
- inputdev->name = "GTCO_CalComp";
- inputdev->phys = device->usbpath;
- inputdev->private = device;
-
+ input_dev->name = "GTCO_CalComp";
+ input_dev->phys = gtco->usbpath;
+ input_dev->private = gtco;
/* Now set up all the input device capabilities */
- gtco_setup_caps(inputdev);
+ gtco_setup_caps(input_dev);
/* Set input device required ID information */
- usb_to_input_id(device->usbdev, &device->inputdevice->id);
- inputdev->cdev.dev = &usbinterface->dev;
+ usb_to_input_id(gtco->usbdev, &input_dev->id);
+ input_dev->cdev.dev = &usbinterface->dev;
/* Setup the URB, it will be posted later on open of input device */
endpoint = &usbinterface->altsetting[0].endpoint[0].desc;
- usb_fill_int_urb(device->urbinfo,
- device->usbdev,
- usb_rcvintpipe(device->usbdev,
+ usb_fill_int_urb(gtco->urbinfo,
+ gtco->usbdev,
+ usb_rcvintpipe(gtco->usbdev,
endpoint->bEndpointAddress),
- device->buffer,
+ gtco->buffer,
REPORT_MAX_SIZE,
gtco_urb_callback,
- device,
+ gtco,
endpoint->bInterval);
- device->urbinfo->transfer_dma = device->buf_dma;
- device->urbinfo->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
-
+ gtco->urbinfo->transfer_dma = gtco->buf_dma;
+ gtco->urbinfo->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
- /* Save device pointer in USB interface device */
- usb_set_intfdata(usbinterface, device);
+ /* Save gtco pointer in USB interface gtco */
+ usb_set_intfdata(usbinterface, gtco);
/* All done, now register the input device */
- input_register_device(inputdev);
+ error = input_register_device(input_dev);
+ if (error)
+ goto err_free_urb;
- info( "gtco driver created usb: %s\n", path);
return 0;
+ err_free_urb:
+ usb_free_urb(gtco->urbinfo);
+ err_free_buf:
+ usb_buffer_free(gtco->usbdev, REPORT_MAX_SIZE,
+ gtco->buffer, gtco->buf_dma);
+ err_free_devs:
+ kfree(report);
+ input_free_device(input_dev);
+ kfree(gtco);
+ return error;
}
/*
*/
static void gtco_disconnect(struct usb_interface *interface)
{
-
/* Grab private device ptr */
- struct gtco *device = usb_get_intfdata (interface);
- struct input_dev *inputdev;
-
- inputdev = device->inputdevice;
+ struct gtco *gtco = usb_get_intfdata(interface);
/* Now reverse all the registration stuff */
- if (device) {
- input_unregister_device(inputdev);
- usb_kill_urb(device->urbinfo);
- usb_free_urb(device->urbinfo);
- usb_buffer_free(device->usbdev, REPORT_MAX_SIZE,
- device->buffer, device->buf_dma);
- kfree(device);
+ if (gtco) {
+ 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);
+ kfree(gtco);
}
info("gtco driver disconnected");
}
-
/* STANDARD MODULE LOAD ROUTINES */
static struct usb_driver gtco_driverinfo_table = {
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,16))
- .owner = THIS_MODULE,
-#endif
- .name = "gtco",
- .id_table = gtco_usbid_table,
- .probe = gtco_probe,
- .disconnect = gtco_disconnect,
+ .name = "gtco",
+ .id_table = gtco_usbid_table,
+ .probe = gtco_probe,
+ .disconnect = gtco_disconnect,
};
+
/*
* Register this module with the USB subsystem
*/
static int __init gtco_init(void)
{
- int rc;
- rc = usb_register(>co_driverinfo_table);
- if (rc) {
- err("usb_register() failed rc=0x%x", rc);
+ int error;
+
+ error = usb_register(>co_driverinfo_table);
+ if (error) {
+ err("usb_register() failed rc=0x%x", error);
+ return error;
}
- printk("GTCO usb driver version: %s",GTCO_VERSION);
- return rc;
+
+ printk("GTCO usb driver version: %s", GTCO_VERSION);
+ return 0;
}
/*
usb_deregister(>co_driverinfo_table);
}
-module_init (gtco_init);
-module_exit (gtco_exit);
+module_init(gtco_init);
+module_exit(gtco_exit);
MODULE_LICENSE("GPL");
projects / linux-2.6 / commitdiff