android_kernel_xiaomi_sm8350/drivers/usb/input/acecad.c
Pekka Enberg 7b842b6e37 [PATCH] USB: convert kcalloc to kzalloc
This patch converts kcalloc(1, ...) calls to use the new kzalloc() function.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-07 16:57:46 -07:00

284 lines
7.6 KiB
C

/*
* Copyright (c) 2001-2005 Edouard TISSERANT <edouard.tisserant@wanadoo.fr>
* Copyright (c) 2004-2005 Stephane VOLTZ <svoltz@numericable.fr>
*
* USB Acecad "Acecad Flair" tablet support
*
* Changelog:
* v3.2 - Added sysfs support
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/input.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/usb.h>
#include <linux/usb_input.h>
/*
* Version Information
*/
#define DRIVER_VERSION "v3.2"
#define DRIVER_DESC "USB Acecad Flair tablet driver"
#define DRIVER_LICENSE "GPL"
#define DRIVER_AUTHOR "Edouard TISSERANT <edouard.tisserant@wanadoo.fr>"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
#define USB_VENDOR_ID_ACECAD 0x0460
#define USB_DEVICE_ID_FLAIR 0x0004
#define USB_DEVICE_ID_302 0x0008
struct usb_acecad {
char name[128];
char phys[64];
struct usb_device *usbdev;
struct input_dev dev;
struct urb *irq;
signed char *data;
dma_addr_t data_dma;
};
static void usb_acecad_irq(struct urb *urb, struct pt_regs *regs)
{
struct usb_acecad *acecad = urb->context;
unsigned char *data = acecad->data;
struct input_dev *dev = &acecad->dev;
int prox, status;
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
goto resubmit;
}
prox = (data[0] & 0x04) >> 2;
input_report_key(dev, BTN_TOOL_PEN, prox);
if (prox) {
int x = data[1] | (data[2] << 8);
int y = data[3] | (data[4] << 8);
/* Pressure should compute the same way for flair and 302 */
int pressure = data[5] | (data[6] << 8);
int touch = data[0] & 0x01;
int stylus = (data[0] & 0x10) >> 4;
int stylus2 = (data[0] & 0x20) >> 5;
input_report_abs(dev, ABS_X, x);
input_report_abs(dev, ABS_Y, y);
input_report_abs(dev, ABS_PRESSURE, pressure);
input_report_key(dev, BTN_TOUCH, touch);
input_report_key(dev, BTN_STYLUS, stylus);
input_report_key(dev, BTN_STYLUS2, stylus2);
}
/* event termination */
input_sync(dev);
resubmit:
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status)
err("can't resubmit intr, %s-%s/input0, status %d",
acecad->usbdev->bus->bus_name, acecad->usbdev->devpath, status);
}
static int usb_acecad_open(struct input_dev *dev)
{
struct usb_acecad *acecad = dev->private;
acecad->irq->dev = acecad->usbdev;
if (usb_submit_urb(acecad->irq, GFP_KERNEL))
return -EIO;
return 0;
}
static void usb_acecad_close(struct input_dev *dev)
{
struct usb_acecad *acecad = dev->private;
usb_kill_urb(acecad->irq);
}
static int usb_acecad_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
struct usb_host_interface *interface = intf->cur_altsetting;
struct usb_endpoint_descriptor *endpoint;
struct usb_acecad *acecad;
int pipe, maxp;
char path[64];
if (interface->desc.bNumEndpoints != 1)
return -ENODEV;
endpoint = &interface->endpoint[0].desc;
if (!(endpoint->bEndpointAddress & 0x80))
return -ENODEV;
if ((endpoint->bmAttributes & 3) != 3)
return -ENODEV;
pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(dev, pipe, usb_pipeout(pipe));
acecad = kzalloc(sizeof(struct usb_acecad), GFP_KERNEL);
if (!acecad)
return -ENOMEM;
acecad->data = usb_buffer_alloc(dev, 8, SLAB_KERNEL, &acecad->data_dma);
if (!acecad->data)
goto fail1;
acecad->irq = usb_alloc_urb(0, GFP_KERNEL);
if (!acecad->irq)
goto fail2;
if (dev->manufacturer)
strlcpy(acecad->name, dev->manufacturer, sizeof(acecad->name));
if (dev->product) {
if (dev->manufacturer)
strlcat(acecad->name, " ", sizeof(acecad->name));
strlcat(acecad->name, dev->product, sizeof(acecad->name));
}
usb_make_path(dev, path, sizeof(path));
snprintf(acecad->phys, sizeof(acecad->phys), "%s/input0", path);
acecad->usbdev = dev;
acecad->dev.evbit[0] = BIT(EV_KEY) | BIT(EV_ABS);
acecad->dev.absbit[0] = BIT(ABS_X) | BIT(ABS_Y) | BIT(ABS_PRESSURE);
acecad->dev.keybit[LONG(BTN_LEFT)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT) | BIT(BTN_MIDDLE);
acecad->dev.keybit[LONG(BTN_DIGI)] = BIT(BTN_TOOL_PEN) |BIT(BTN_TOUCH) | BIT(BTN_STYLUS) | BIT(BTN_STYLUS2);
switch (id->driver_info) {
case 0:
acecad->dev.absmax[ABS_X] = 5000;
acecad->dev.absmax[ABS_Y] = 3750;
acecad->dev.absmax[ABS_PRESSURE] = 512;
if (!strlen(acecad->name))
snprintf(acecad->name, sizeof(acecad->name),
"USB Acecad Flair Tablet %04x:%04x",
dev->descriptor.idVendor, dev->descriptor.idProduct);
break;
case 1:
acecad->dev.absmax[ABS_X] = 3000;
acecad->dev.absmax[ABS_Y] = 2250;
acecad->dev.absmax[ABS_PRESSURE] = 1024;
if (!strlen(acecad->name))
snprintf(acecad->name, sizeof(acecad->name),
"USB Acecad 302 Tablet %04x:%04x",
dev->descriptor.idVendor, dev->descriptor.idProduct);
break;
}
acecad->dev.absfuzz[ABS_X] = 4;
acecad->dev.absfuzz[ABS_Y] = 4;
acecad->dev.private = acecad;
acecad->dev.open = usb_acecad_open;
acecad->dev.close = usb_acecad_close;
acecad->dev.name = acecad->name;
acecad->dev.phys = acecad->phys;
usb_to_input_id(dev, &acecad->dev.id);
acecad->dev.dev = &intf->dev;
usb_fill_int_urb(acecad->irq, dev, pipe,
acecad->data, maxp > 8 ? 8 : maxp,
usb_acecad_irq, acecad, endpoint->bInterval);
acecad->irq->transfer_dma = acecad->data_dma;
acecad->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
input_register_device(&acecad->dev);
printk(KERN_INFO "input: %s with packet size %d on %s\n",
acecad->name, maxp, path);
usb_set_intfdata(intf, acecad);
return 0;
fail2: usb_buffer_free(dev, 8, acecad->data, acecad->data_dma);
fail1: kfree(acecad);
return -ENOMEM;
}
static void usb_acecad_disconnect(struct usb_interface *intf)
{
struct usb_acecad *acecad = usb_get_intfdata(intf);
usb_set_intfdata(intf, NULL);
if (acecad) {
usb_kill_urb(acecad->irq);
input_unregister_device(&acecad->dev);
usb_free_urb(acecad->irq);
usb_buffer_free(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma);
kfree(acecad);
}
}
static struct usb_device_id usb_acecad_id_table [] = {
{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_FLAIR), .driver_info = 0 },
{ USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_302), .driver_info = 1 },
{ }
};
MODULE_DEVICE_TABLE(usb, usb_acecad_id_table);
static struct usb_driver usb_acecad_driver = {
.owner = THIS_MODULE,
.name = "usb_acecad",
.probe = usb_acecad_probe,
.disconnect = usb_acecad_disconnect,
.id_table = usb_acecad_id_table,
};
static int __init usb_acecad_init(void)
{
int result = usb_register(&usb_acecad_driver);
if (result == 0)
info(DRIVER_VERSION ":" DRIVER_DESC);
return result;
}
static void __exit usb_acecad_exit(void)
{
usb_deregister(&usb_acecad_driver);
}
module_init(usb_acecad_init);
module_exit(usb_acecad_exit);