383 lines
11 KiB
C
383 lines
11 KiB
C
#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/usb/input.h>
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#include <asm/unaligned.h>
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#define DRIVER_VERSION "0.6"
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#define DRIVER_AUTHOR "Ondra Havel <ondra.havel@gmail.com>"
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#define DRIVER_DESC "USB Hanvon tablet driver"
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#define DRIVER_LICENSE "GPL"
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE(DRIVER_LICENSE);
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#define USB_VENDOR_ID_HANVON 0x0b57
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#define USB_PRODUCT_ID_AM3M 0x8528
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#define USB_PRODUCT_ID_AM0806 0x8502
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#define USB_PRODUCT_ID_AM0605 0x8503
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#define USB_PRODUCT_ID_AM1107 0x8505
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#define USB_PRODUCT_ID_AM1209 0x8501
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#define USB_PRODUCT_ID_RL0604 0x851f
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#define USB_PRODUCT_ID_RL0504 0x851d
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#define USB_PRODUCT_ID_GP0806 0x8039
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#define USB_PRODUCT_ID_GP0806B 0x8511
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#define USB_PRODUCT_ID_GP0605 0x8512
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#define USB_PRODUCT_ID_GP0605A 0x803a
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#define USB_PRODUCT_ID_GP0504 0x8037
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#define USB_PRODUCT_ID_NXS1513 0x8030
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#define USB_PRODUCT_ID_GP0906 0x8521
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#define USB_PRODUCT_ID_APPIV0906 0x8532
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#define USB_AM_PACKET_LEN 10
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static int lbuttons[]={BTN_0,BTN_1,BTN_2,BTN_3}; /* reported on all AMs */
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static int rbuttons[]={BTN_4,BTN_5,BTN_6,BTN_7}; /* reported on AM1107+ */
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#define AM_WHEEL_THRESHOLD 4
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#define AM_MAX_TILT_X 0x3f
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#define AM_MAX_TILT_Y 0x7f
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#define AM_MAX_PRESSURE 0x400
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struct hanvon {
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unsigned char *data;
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dma_addr_t data_dma;
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struct input_dev *dev;
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struct usb_device *usbdev;
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struct urb *irq;
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int old_wheel_pos;
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char phys[32];
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};
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static void report_buttons(struct hanvon *hanvon, int buttons[], unsigned char dta)
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{
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struct input_dev *dev = hanvon->dev;
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if((dta & 0xf0) == 0xa0) {
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input_report_key(dev, buttons[1], dta & 0x02);
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input_report_key(dev, buttons[2], dta & 0x04);
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input_report_key(dev, buttons[3], dta & 0x08);
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} else {
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if(dta <= 0x3f) { /* slider area active */
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int diff = dta - hanvon->old_wheel_pos;
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if(abs(diff) < AM_WHEEL_THRESHOLD)
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input_report_rel(dev, REL_WHEEL, diff);
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hanvon->old_wheel_pos = dta;
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}
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}
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}
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static inline void handle_default(struct hanvon *hanvon)
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{
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unsigned char *data = hanvon->data;
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struct input_dev *dev = hanvon->dev;
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#define AM_MAX_ABS_X 0x27de
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#define AM_MAX_ABS_Y 0x1cfe
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switch(data[0]) {
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case 0x01: /* button press */
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if(data[1]==0x55) /* left side */
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report_buttons(hanvon, lbuttons,data[2]);
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if(data[3]==0xaa) /* right side (am1107, am1209) */
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report_buttons(hanvon, rbuttons,data[4]);
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break;
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case 0x02: /* position change */
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if((data[1] & 0xf0) != 0) {
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input_report_abs(dev, ABS_X, get_unaligned_be16(&data[2]) * 0xffff / AM_MAX_ABS_X);
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input_report_abs(dev, ABS_Y, get_unaligned_be16(&data[4]) * 0xffff / AM_MAX_ABS_Y);
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input_report_abs(dev, ABS_TILT_X, data[7] & 0x3f);
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input_report_abs(dev, ABS_TILT_Y, data[8]);
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input_report_abs(dev, ABS_PRESSURE, get_unaligned_be16(&data[6])>>6);
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}
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input_report_key(dev, BTN_LEFT, data[1] & 0x01); /* pen touches the surface */
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input_report_key(dev, BTN_RIGHT, data[1] & 0x02); /* stylus button pressed (right click) */
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input_report_key(dev, lbuttons[0], data[1] & 0x20); /* 'eraser' button */
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break;
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}
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}
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static inline void handle_gp0906(struct hanvon *hanvon)
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{
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unsigned char *data = hanvon->data;
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struct input_dev *dev = hanvon->dev;
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/*
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hanvon graphic pal 3, gp0906!
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- data definition. this is not official...
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[header, 1Byte][event type, 1Byte][x, 2Bytes][y, 2Bytes][pressure, 2Bytes][tilt, 2Bytes]
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*/
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switch( data[0] ) {
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case 0x02: /* pen event */
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if( ( data[1] & 0xe0) == 0xe0 ) {
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if( data[1] & 0x01 ) /* pressure change */
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input_report_abs(dev, ABS_PRESSURE, get_unaligned_be16(&data[6])>>6);
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if( data[1] & 0x04 )
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input_report_key(dev, BTN_RIGHT, data[1] & 0x2); /* stylus button pressed (right click) */
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input_report_abs(dev, ABS_X, get_unaligned_be16(&data[2]) * 0xffff / AM_MAX_ABS_X);
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input_report_abs(dev, ABS_Y, get_unaligned_be16(&data[4]) * 0xffff / AM_MAX_ABS_Y);
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input_report_key(dev, lbuttons[0], data[6]);
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} else {
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if( data[1] == 0xc2) /* pen enters */
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{}
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if( data[1] == 0x80) /* pen leaves */
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{}
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}
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break;
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case 0x0c: /* key press on the tablet */
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input_report_key(dev, lbuttons[0], data[3] & 0x01);
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input_report_key(dev, lbuttons[1], data[3] & 0x02);
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input_report_key(dev, lbuttons[2], data[3] & 0x04);
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input_report_key(dev, lbuttons[3], data[3] & 0x08);
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break;
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}
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}
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static inline void handle_appiv0906(struct hanvon *hanvon)
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{
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unsigned char *data = hanvon->data;
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struct input_dev *dev = hanvon->dev;
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#define APPIV_XMAX 0x5750
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#define APPIV_YMAX 0x3692
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switch(data[0]) {
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case 0x01: /* pen button event */
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input_report_abs(dev, ABS_X, get_unaligned_le16(&data[2]) * 0xffff / APPIV_XMAX);
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input_report_abs(dev, ABS_Y, get_unaligned_le16(&data[4]) * 0xffff / APPIV_YMAX);
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input_report_key(dev, BTN_LEFT, data[1] & 0x01); /* pen touches the surface */
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input_report_key(dev, BTN_RIGHT, data[1] & 0x02); /* stylus button pressed (right click) */
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input_report_key(dev, BTN_MIDDLE, data[1] & 0x04); /* stylus button pressed (right click) */
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input_report_key(dev, BTN_0, data[1] & 0x08); /* stylus button pressed (right click) */
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break;
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case 0x02: /* pen event */
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input_report_abs(dev, ABS_X, get_unaligned_be16(&data[2]) * 0xffff / APPIV_XMAX);
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input_report_abs(dev, ABS_Y, get_unaligned_be16(&data[4]) * 0xffff / APPIV_YMAX);
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if(data[1] & 1)
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input_report_abs(dev, ABS_PRESSURE, get_unaligned_be16(&data[6])>>6);
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break;
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case 0x0c: /* tablet button event */
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input_report_key(dev, BTN_1, data[3] & 0x01);
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input_report_key(dev, BTN_2, data[3] & 0x02);
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input_report_key(dev, BTN_3, data[3] & 0x04);
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input_report_key(dev, BTN_4, data[3] & 0x08);
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input_report_key(dev, BTN_5, data[3] & 0x10);
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input_report_key(dev, BTN_6, data[3] & 0x20);
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input_report_key(dev, BTN_7, data[3] & 0x40);
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break;
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}
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}
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static void hanvon_irq(struct urb *urb)
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{
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struct hanvon *hanvon = urb->context;
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int retval;
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switch (urb->status) {
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case 0:
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/* success */
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switch( hanvon->usbdev->descriptor.idProduct ) {
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case USB_PRODUCT_ID_GP0906:
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handle_gp0906(hanvon);
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break;
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case USB_PRODUCT_ID_APPIV0906:
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handle_appiv0906(hanvon);
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break;
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default:
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handle_default(hanvon);
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break;
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}
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break;
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case -ECONNRESET:
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case -ENOENT:
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case -ESHUTDOWN:
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/* this urb is terminated, clean up */
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printk("%s - urb shutting down with status: %d", __func__, urb->status);
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return;
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default:
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printk("%s - nonzero urb status received: %d", __func__, urb->status);
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break;
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}
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input_sync(hanvon->dev);
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retval = usb_submit_urb (urb, GFP_ATOMIC);
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if (retval)
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printk("%s - usb_submit_urb failed with result %d", __func__, retval);
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}
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static struct usb_device_id hanvon_ids[] = {
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM3M) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM1209) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM1107) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM0806) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_AM0605) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_RL0604) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_RL0504) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0806) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0806B) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0605) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0605A) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0504) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_NXS1513) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_GP0906) },
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{ USB_DEVICE(USB_VENDOR_ID_HANVON, USB_PRODUCT_ID_APPIV0906)},
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{}
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};
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MODULE_DEVICE_TABLE(usb, hanvon_ids);
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static int hanvon_open(struct input_dev *dev)
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{
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struct hanvon *hanvon = input_get_drvdata(dev);
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hanvon->old_wheel_pos = -AM_WHEEL_THRESHOLD-1;
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hanvon->irq->dev = hanvon->usbdev;
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if (usb_submit_urb(hanvon->irq, GFP_KERNEL))
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return -EIO;
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return 0;
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}
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static void hanvon_close(struct input_dev *dev)
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{
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struct hanvon *hanvon = input_get_drvdata(dev);
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usb_kill_urb(hanvon->irq);
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}
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static int hanvon_probe(struct usb_interface *intf, const struct usb_device_id *id)
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{
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struct usb_device *dev = interface_to_usbdev(intf);
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struct usb_endpoint_descriptor *endpoint;
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struct hanvon *hanvon;
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struct input_dev *input_dev;
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int error = -ENOMEM, i;
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hanvon = kzalloc(sizeof(struct hanvon), GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!hanvon || !input_dev)
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goto fail1;
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hanvon->data = (unsigned char *)usb_alloc_coherent(dev, USB_AM_PACKET_LEN, GFP_KERNEL, &hanvon->data_dma);
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if (!hanvon->data)
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goto fail1;
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hanvon->irq = usb_alloc_urb(0, GFP_KERNEL);
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if (!hanvon->irq)
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goto fail2;
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hanvon->usbdev = dev;
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hanvon->dev = input_dev;
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usb_make_path(dev, hanvon->phys, sizeof(hanvon->phys));
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strlcat(hanvon->phys, "/input0", sizeof(hanvon->phys));
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input_dev->name = "Hanvon tablet";
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input_dev->phys = hanvon->phys;
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usb_to_input_id(dev, &input_dev->id);
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input_dev->dev.parent = &intf->dev;
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input_set_drvdata(input_dev, hanvon);
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input_dev->open = hanvon_open;
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input_dev->close = hanvon_close;
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input_dev->evbit[0] |= BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS) | BIT_MASK(EV_REL);
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input_dev->keybit[BIT_WORD(BTN_DIGI)] |= BIT_MASK(BTN_TOOL_PEN) | BIT_MASK(BTN_TOUCH);
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input_dev->keybit[BIT_WORD(BTN_LEFT)] |= BIT_MASK(BTN_LEFT) | BIT_MASK(BTN_RIGHT) | BIT_MASK(BTN_MIDDLE);
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for(i=0;i<sizeof(lbuttons)/sizeof(lbuttons[0]);i++)
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__set_bit(lbuttons[i], input_dev->keybit);
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for(i=0;i<sizeof(rbuttons)/sizeof(rbuttons[0]);i++)
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__set_bit(rbuttons[i], input_dev->keybit);
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input_set_abs_params(input_dev, ABS_X, 0, 0xffff, 4, 0);
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input_set_abs_params(input_dev, ABS_Y, 0, 0xffff, 4, 0);
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input_set_abs_params(input_dev, ABS_TILT_X, 0, AM_MAX_TILT_X, 0, 0);
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input_set_abs_params(input_dev, ABS_TILT_Y, 0, AM_MAX_TILT_Y, 0, 0);
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input_set_abs_params(input_dev, ABS_PRESSURE, 0, AM_MAX_PRESSURE, 0, 0);
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input_set_capability(input_dev, EV_REL, REL_WHEEL);
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endpoint = &intf->cur_altsetting->endpoint[0].desc;
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usb_fill_int_urb(hanvon->irq, dev,
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usb_rcvintpipe(dev, endpoint->bEndpointAddress),
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hanvon->data, USB_AM_PACKET_LEN,
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hanvon_irq, hanvon, endpoint->bInterval);
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hanvon->irq->transfer_dma = hanvon->data_dma;
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hanvon->irq->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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error = input_register_device(hanvon->dev);
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if (error)
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goto fail3;
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usb_set_intfdata(intf, hanvon);
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return 0;
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fail3: usb_free_urb(hanvon->irq);
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fail2: usb_free_coherent(dev, USB_AM_PACKET_LEN, hanvon->data, hanvon->data_dma);
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fail1: input_free_device(input_dev);
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kfree(hanvon);
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return error;
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}
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static void hanvon_disconnect(struct usb_interface *intf)
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{
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struct hanvon *hanvon = usb_get_intfdata(intf);
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usb_set_intfdata(intf, NULL);
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if (hanvon) {
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usb_kill_urb(hanvon->irq);
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input_unregister_device(hanvon->dev);
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usb_free_urb(hanvon->irq);
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usb_free_coherent(interface_to_usbdev(intf), USB_AM_PACKET_LEN, hanvon->data, hanvon->data_dma);
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kfree(hanvon);
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}
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}
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static struct usb_driver hanvon_driver = {
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.name = "hanvon",
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.probe = hanvon_probe,
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.disconnect = hanvon_disconnect,
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.id_table = hanvon_ids,
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};
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static int __init hanvon_init(void)
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{
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int rv;
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if((rv = usb_register(&hanvon_driver)) != 0)
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return rv;
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printk(DRIVER_DESC " " DRIVER_VERSION "\n");
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return 0;
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}
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static void __exit hanvon_exit(void)
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{
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usb_deregister(&hanvon_driver);
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}
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module_init(hanvon_init);
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module_exit(hanvon_exit);
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