Input: add driver for Acecad Flair USB tablets

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 285 insertions, 0 deletions

diff --git a/drivers/usb/input/acecad.c b/drivers/usb/input/acecad.c
new file mode 100644
index 000000000000..ebcf7c955800
--- /dev/null
+++ b/drivers/usb/input/acecad.c
@@ -0,0 +1,285 @@
+/*
+ *  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>
+
+/*
+ * 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] | ((int)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 = kcalloc(1, 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;
+	acecad->dev.id.bustype = BUS_USB;
+	acecad->dev.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
+	acecad->dev.id.product = le16_to_cpu(dev->descriptor.idProduct);
+	acecad->dev.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
+	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);