179909ecaf
I do not think Vojtech wants snail mail these days (and he mentioned that nobody has ever sent him snail mail), and the address is not even valid anymore, so let's remove snail-mail instructions from the sources. Acked-by: Vojtech Pavlik <vojtech@suse.cz> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
259 lines
6.2 KiB
C
259 lines
6.2 KiB
C
/*
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* Copyright (c) 1999-2001 Vojtech Pavlik
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*/
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/*
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* Creative Labs Blaster GamePad Cobra driver for Linux
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*/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/gameport.h>
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#include <linux/input.h>
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#include <linux/jiffies.h>
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#define DRIVER_DESC "Creative Labs Blaster GamePad Cobra driver"
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MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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#define COBRA_MAX_STROBE 45 /* 45 us max wait for first strobe */
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#define COBRA_LENGTH 36
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static int cobra_btn[] = { BTN_START, BTN_SELECT, BTN_TL, BTN_TR, BTN_X, BTN_Y, BTN_Z, BTN_A, BTN_B, BTN_C, BTN_TL2, BTN_TR2, 0 };
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struct cobra {
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struct gameport *gameport;
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struct input_dev *dev[2];
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int reads;
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int bads;
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unsigned char exists;
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char phys[2][32];
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};
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static unsigned char cobra_read_packet(struct gameport *gameport, unsigned int *data)
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{
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unsigned long flags;
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unsigned char u, v, w;
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__u64 buf[2];
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int r[2], t[2];
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int i, j, ret;
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int strobe = gameport_time(gameport, COBRA_MAX_STROBE);
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for (i = 0; i < 2; i++) {
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r[i] = buf[i] = 0;
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t[i] = COBRA_MAX_STROBE;
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}
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local_irq_save(flags);
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u = gameport_read(gameport);
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do {
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t[0]--; t[1]--;
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v = gameport_read(gameport);
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for (i = 0, w = u ^ v; i < 2 && w; i++, w >>= 2)
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if (w & 0x30) {
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if ((w & 0x30) < 0x30 && r[i] < COBRA_LENGTH && t[i] > 0) {
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buf[i] |= (__u64)((w >> 5) & 1) << r[i]++;
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t[i] = strobe;
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u = v;
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} else t[i] = 0;
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}
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} while (t[0] > 0 || t[1] > 0);
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local_irq_restore(flags);
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ret = 0;
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for (i = 0; i < 2; i++) {
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if (r[i] != COBRA_LENGTH) continue;
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for (j = 0; j < COBRA_LENGTH && (buf[i] & 0x04104107f) ^ 0x041041040; j++)
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buf[i] = (buf[i] >> 1) | ((__u64)(buf[i] & 1) << (COBRA_LENGTH - 1));
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if (j < COBRA_LENGTH) ret |= (1 << i);
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data[i] = ((buf[i] >> 7) & 0x000001f) | ((buf[i] >> 8) & 0x00003e0)
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| ((buf[i] >> 9) & 0x0007c00) | ((buf[i] >> 10) & 0x00f8000)
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| ((buf[i] >> 11) & 0x1f00000);
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}
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return ret;
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}
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static void cobra_poll(struct gameport *gameport)
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{
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struct cobra *cobra = gameport_get_drvdata(gameport);
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struct input_dev *dev;
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unsigned int data[2];
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int i, j, r;
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cobra->reads++;
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if ((r = cobra_read_packet(gameport, data)) != cobra->exists) {
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cobra->bads++;
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return;
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}
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for (i = 0; i < 2; i++)
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if (cobra->exists & r & (1 << i)) {
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dev = cobra->dev[i];
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input_report_abs(dev, ABS_X, ((data[i] >> 4) & 1) - ((data[i] >> 3) & 1));
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input_report_abs(dev, ABS_Y, ((data[i] >> 2) & 1) - ((data[i] >> 1) & 1));
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for (j = 0; cobra_btn[j]; j++)
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input_report_key(dev, cobra_btn[j], data[i] & (0x20 << j));
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input_sync(dev);
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}
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}
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static int cobra_open(struct input_dev *dev)
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{
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struct cobra *cobra = input_get_drvdata(dev);
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gameport_start_polling(cobra->gameport);
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return 0;
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}
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static void cobra_close(struct input_dev *dev)
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{
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struct cobra *cobra = input_get_drvdata(dev);
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gameport_stop_polling(cobra->gameport);
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}
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static int cobra_connect(struct gameport *gameport, struct gameport_driver *drv)
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{
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struct cobra *cobra;
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struct input_dev *input_dev;
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unsigned int data[2];
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int i, j;
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int err;
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cobra = kzalloc(sizeof(struct cobra), GFP_KERNEL);
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if (!cobra)
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return -ENOMEM;
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cobra->gameport = gameport;
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gameport_set_drvdata(gameport, cobra);
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err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
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if (err)
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goto fail1;
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cobra->exists = cobra_read_packet(gameport, data);
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for (i = 0; i < 2; i++)
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if ((cobra->exists >> i) & data[i] & 1) {
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printk(KERN_WARNING "cobra.c: Device %d on %s has the Ext bit set. ID is: %d"
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" Contact vojtech@ucw.cz\n", i, gameport->phys, (data[i] >> 2) & 7);
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cobra->exists &= ~(1 << i);
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}
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if (!cobra->exists) {
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err = -ENODEV;
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goto fail2;
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}
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gameport_set_poll_handler(gameport, cobra_poll);
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gameport_set_poll_interval(gameport, 20);
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for (i = 0; i < 2; i++) {
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if (~(cobra->exists >> i) & 1)
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continue;
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cobra->dev[i] = input_dev = input_allocate_device();
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if (!input_dev) {
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err = -ENOMEM;
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goto fail3;
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}
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snprintf(cobra->phys[i], sizeof(cobra->phys[i]),
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"%s/input%d", gameport->phys, i);
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input_dev->name = "Creative Labs Blaster GamePad Cobra";
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input_dev->phys = cobra->phys[i];
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input_dev->id.bustype = BUS_GAMEPORT;
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input_dev->id.vendor = GAMEPORT_ID_VENDOR_CREATIVE;
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input_dev->id.product = 0x0008;
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input_dev->id.version = 0x0100;
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input_dev->dev.parent = &gameport->dev;
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input_set_drvdata(input_dev, cobra);
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input_dev->open = cobra_open;
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input_dev->close = cobra_close;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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input_set_abs_params(input_dev, ABS_X, -1, 1, 0, 0);
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input_set_abs_params(input_dev, ABS_Y, -1, 1, 0, 0);
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for (j = 0; cobra_btn[j]; j++)
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set_bit(cobra_btn[j], input_dev->keybit);
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err = input_register_device(cobra->dev[i]);
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if (err)
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goto fail4;
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}
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return 0;
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fail4: input_free_device(cobra->dev[i]);
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fail3: while (--i >= 0)
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if (cobra->dev[i])
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input_unregister_device(cobra->dev[i]);
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fail2: gameport_close(gameport);
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fail1: gameport_set_drvdata(gameport, NULL);
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kfree(cobra);
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return err;
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}
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static void cobra_disconnect(struct gameport *gameport)
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{
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struct cobra *cobra = gameport_get_drvdata(gameport);
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int i;
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for (i = 0; i < 2; i++)
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if ((cobra->exists >> i) & 1)
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input_unregister_device(cobra->dev[i]);
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gameport_close(gameport);
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gameport_set_drvdata(gameport, NULL);
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kfree(cobra);
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}
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static struct gameport_driver cobra_drv = {
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.driver = {
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.name = "cobra",
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},
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.description = DRIVER_DESC,
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.connect = cobra_connect,
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.disconnect = cobra_disconnect,
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};
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module_gameport_driver(cobra_drv);
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