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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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de3748f66f
The input_free_device() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
568 lines
14 KiB
C
568 lines
14 KiB
C
/*
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* Copyright (c) 1998-2005 Vojtech Pavlik
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*/
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/*
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* Logitech ADI joystick family 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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* Should you need to contact me, the author, you can do so either by
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* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
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* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
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*/
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/gameport.h>
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#include <linux/jiffies.h>
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#define DRIVER_DESC "Logitech ADI joystick family 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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/*
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* Times, array sizes, flags, ids.
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*/
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#define ADI_MAX_START 200 /* Trigger to packet timeout [200us] */
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#define ADI_MAX_STROBE 40 /* Single bit timeout [40us] */
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#define ADI_INIT_DELAY 10 /* Delay after init packet [10ms] */
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#define ADI_DATA_DELAY 4 /* Delay after data packet [4ms] */
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#define ADI_MAX_LENGTH 256
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#define ADI_MIN_LENGTH 8
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#define ADI_MIN_LEN_LENGTH 10
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#define ADI_MIN_ID_LENGTH 66
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#define ADI_MAX_NAME_LENGTH 64
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#define ADI_MAX_CNAME_LENGTH 16
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#define ADI_MAX_PHYS_LENGTH 64
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#define ADI_FLAG_HAT 0x04
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#define ADI_FLAG_10BIT 0x08
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#define ADI_ID_TPD 0x01
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#define ADI_ID_WGP 0x06
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#define ADI_ID_WGPE 0x08
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#define ADI_ID_MAX 0x0a
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/*
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* Names, buttons, axes ...
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*/
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static char *adi_names[] = { "WingMan Extreme Digital", "ThunderPad Digital", "SideCar", "CyberMan 2",
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"WingMan Interceptor", "WingMan Formula", "WingMan GamePad",
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"WingMan Extreme Digital 3D", "WingMan GamePad Extreme",
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"WingMan GamePad USB", "Unknown Device %#x" };
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static char adi_wmgpe_abs[] = { ABS_X, ABS_Y, ABS_HAT0X, ABS_HAT0Y };
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static char adi_wmi_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
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static char adi_wmed3d_abs[] = { ABS_X, ABS_Y, ABS_THROTTLE, ABS_RZ, ABS_HAT0X, ABS_HAT0Y };
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static char adi_cm2_abs[] = { ABS_X, ABS_Y, ABS_Z, ABS_RX, ABS_RY, ABS_RZ };
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static char adi_wmf_abs[] = { ABS_WHEEL, ABS_GAS, ABS_BRAKE, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y, ABS_HAT2X, ABS_HAT2Y };
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static short adi_wmgpe_key[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START, BTN_MODE, BTN_SELECT };
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static short adi_wmi_key[] = { BTN_TRIGGER, BTN_TOP, BTN_THUMB, BTN_TOP2, BTN_BASE, BTN_BASE2, BTN_BASE3, BTN_BASE4, BTN_EXTRA };
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static short adi_wmed3d_key[] = { BTN_TRIGGER, BTN_THUMB, BTN_THUMB2, BTN_TOP, BTN_TOP2, BTN_BASE, BTN_BASE2 };
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static short adi_cm2_key[] = { BTN_1, BTN_2, BTN_3, BTN_4, BTN_5, BTN_6, BTN_7, BTN_8 };
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static char* adi_abs[] = { adi_wmi_abs, adi_wmgpe_abs, adi_wmf_abs, adi_cm2_abs, adi_wmi_abs, adi_wmf_abs,
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adi_wmgpe_abs, adi_wmed3d_abs, adi_wmgpe_abs, adi_wmgpe_abs, adi_wmi_abs };
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static short* adi_key[] = { adi_wmi_key, adi_wmgpe_key, adi_cm2_key, adi_cm2_key, adi_wmi_key, adi_cm2_key,
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adi_wmgpe_key, adi_wmed3d_key, adi_wmgpe_key, adi_wmgpe_key, adi_wmi_key };
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/*
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* Hat to axis conversion arrays.
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*/
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static struct {
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int x;
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int y;
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} adi_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
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/*
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* Per-port information.
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*/
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struct adi {
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struct input_dev *dev;
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int length;
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int ret;
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int idx;
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unsigned char id;
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char buttons;
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char axes10;
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char axes8;
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signed char pad;
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char hats;
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char *abs;
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short *key;
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char name[ADI_MAX_NAME_LENGTH];
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char cname[ADI_MAX_CNAME_LENGTH];
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char phys[ADI_MAX_PHYS_LENGTH];
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unsigned char data[ADI_MAX_LENGTH];
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};
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struct adi_port {
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struct gameport *gameport;
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struct adi adi[2];
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int bad;
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int reads;
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};
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/*
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* adi_read_packet() reads a Logitech ADI packet.
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*/
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static void adi_read_packet(struct adi_port *port)
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{
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struct adi *adi = port->adi;
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struct gameport *gameport = port->gameport;
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unsigned char u, v, w, x, z;
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int t[2], s[2], i;
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unsigned long flags;
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for (i = 0; i < 2; i++) {
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adi[i].ret = -1;
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t[i] = gameport_time(gameport, ADI_MAX_START);
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s[i] = 0;
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}
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local_irq_save(flags);
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gameport_trigger(gameport);
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v = z = gameport_read(gameport);
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do {
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u = v;
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w = u ^ (v = x = gameport_read(gameport));
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for (i = 0; i < 2; i++, w >>= 2, x >>= 2) {
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t[i]--;
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if ((w & 0x30) && s[i]) {
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if ((w & 0x30) < 0x30 && adi[i].ret < ADI_MAX_LENGTH && t[i] > 0) {
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adi[i].data[++adi[i].ret] = w;
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t[i] = gameport_time(gameport, ADI_MAX_STROBE);
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} else t[i] = 0;
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} else if (!(x & 0x30)) s[i] = 1;
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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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return;
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}
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/*
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* adi_move_bits() detects a possible 2-stream mode, and moves
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* the bits accordingly.
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*/
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static void adi_move_bits(struct adi_port *port, int length)
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{
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int i;
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struct adi *adi = port->adi;
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adi[0].idx = adi[1].idx = 0;
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if (adi[0].ret <= 0 || adi[1].ret <= 0) return;
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if (adi[0].data[0] & 0x20 || ~adi[1].data[0] & 0x20) return;
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for (i = 1; i <= adi[1].ret; i++)
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adi[0].data[((length - 1) >> 1) + i + 1] = adi[1].data[i];
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adi[0].ret += adi[1].ret;
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adi[1].ret = -1;
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}
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/*
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* adi_get_bits() gathers bits from the data packet.
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*/
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static inline int adi_get_bits(struct adi *adi, int count)
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{
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int bits = 0;
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int i;
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if ((adi->idx += count) > adi->ret) return 0;
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for (i = 0; i < count; i++)
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bits |= ((adi->data[adi->idx - i] >> 5) & 1) << i;
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return bits;
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}
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/*
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* adi_decode() decodes Logitech joystick data into input events.
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*/
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static int adi_decode(struct adi *adi)
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{
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struct input_dev *dev = adi->dev;
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char *abs = adi->abs;
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short *key = adi->key;
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int i, t;
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if (adi->ret < adi->length || adi->id != (adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4)))
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return -1;
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for (i = 0; i < adi->axes10; i++)
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input_report_abs(dev, *abs++, adi_get_bits(adi, 10));
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for (i = 0; i < adi->axes8; i++)
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input_report_abs(dev, *abs++, adi_get_bits(adi, 8));
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for (i = 0; i < adi->buttons && i < 63; i++) {
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if (i == adi->pad) {
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t = adi_get_bits(adi, 4);
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input_report_abs(dev, *abs++, ((t >> 2) & 1) - ( t & 1));
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input_report_abs(dev, *abs++, ((t >> 1) & 1) - ((t >> 3) & 1));
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}
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input_report_key(dev, *key++, adi_get_bits(adi, 1));
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}
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for (i = 0; i < adi->hats; i++) {
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if ((t = adi_get_bits(adi, 4)) > 8) t = 0;
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input_report_abs(dev, *abs++, adi_hat_to_axis[t].x);
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input_report_abs(dev, *abs++, adi_hat_to_axis[t].y);
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}
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for (i = 63; i < adi->buttons; i++)
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input_report_key(dev, *key++, adi_get_bits(adi, 1));
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input_sync(dev);
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return 0;
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}
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/*
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* adi_read() reads the data packet and decodes it.
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*/
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static int adi_read(struct adi_port *port)
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{
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int i;
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int result = 0;
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adi_read_packet(port);
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adi_move_bits(port, port->adi[0].length);
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for (i = 0; i < 2; i++)
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if (port->adi[i].length)
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result |= adi_decode(port->adi + i);
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return result;
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}
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/*
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* adi_poll() repeatedly polls the Logitech joysticks.
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*/
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static void adi_poll(struct gameport *gameport)
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{
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struct adi_port *port = gameport_get_drvdata(gameport);
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port->bad -= adi_read(port);
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port->reads++;
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}
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/*
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* adi_open() is a callback from the input open routine.
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*/
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static int adi_open(struct input_dev *dev)
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{
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struct adi_port *port = input_get_drvdata(dev);
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gameport_start_polling(port->gameport);
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return 0;
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}
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/*
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* adi_close() is a callback from the input close routine.
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*/
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static void adi_close(struct input_dev *dev)
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{
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struct adi_port *port = input_get_drvdata(dev);
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gameport_stop_polling(port->gameport);
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}
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/*
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* adi_init_digital() sends a trigger & delay sequence
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* to reset and initialize a Logitech joystick into digital mode.
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*/
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static void adi_init_digital(struct gameport *gameport)
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{
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int seq[] = { 4, -2, -3, 10, -6, -11, -7, -9, 11, 0 };
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int i;
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for (i = 0; seq[i]; i++) {
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gameport_trigger(gameport);
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if (seq[i] > 0)
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msleep(seq[i]);
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if (seq[i] < 0) {
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mdelay(-seq[i]);
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udelay(-seq[i]*14); /* It looks like mdelay() is off by approx 1.4% */
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}
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}
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}
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static void adi_id_decode(struct adi *adi, struct adi_port *port)
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{
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int i, t;
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if (adi->ret < ADI_MIN_ID_LENGTH) /* Minimum ID packet length */
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return;
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if (adi->ret < (t = adi_get_bits(adi, 10))) {
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printk(KERN_WARNING "adi: Short ID packet: reported: %d != read: %d\n", t, adi->ret);
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return;
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}
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adi->id = adi_get_bits(adi, 4) | (adi_get_bits(adi, 4) << 4);
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if ((t = adi_get_bits(adi, 4)) & ADI_FLAG_HAT) adi->hats++;
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adi->length = adi_get_bits(adi, 10);
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if (adi->length >= ADI_MAX_LENGTH || adi->length < ADI_MIN_LENGTH) {
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printk(KERN_WARNING "adi: Bad data packet length (%d).\n", adi->length);
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adi->length = 0;
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return;
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}
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adi->axes8 = adi_get_bits(adi, 4);
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adi->buttons = adi_get_bits(adi, 6);
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if (adi_get_bits(adi, 6) != 8 && adi->hats) {
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printk(KERN_WARNING "adi: Other than 8-dir POVs not supported yet.\n");
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adi->length = 0;
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return;
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}
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adi->buttons += adi_get_bits(adi, 6);
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adi->hats += adi_get_bits(adi, 4);
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i = adi_get_bits(adi, 4);
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if (t & ADI_FLAG_10BIT) {
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adi->axes10 = adi->axes8 - i;
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adi->axes8 = i;
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}
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t = adi_get_bits(adi, 4);
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for (i = 0; i < t; i++)
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adi->cname[i] = adi_get_bits(adi, 8);
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adi->cname[i] = 0;
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t = 8 + adi->buttons + adi->axes10 * 10 + adi->axes8 * 8 + adi->hats * 4;
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if (adi->length != t && adi->length != t + (t & 1)) {
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printk(KERN_WARNING "adi: Expected length %d != data length %d\n", t, adi->length);
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adi->length = 0;
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return;
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}
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switch (adi->id) {
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case ADI_ID_TPD:
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adi->pad = 4;
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adi->buttons -= 4;
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break;
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case ADI_ID_WGP:
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adi->pad = 0;
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adi->buttons -= 4;
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break;
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default:
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adi->pad = -1;
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break;
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}
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}
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static int adi_init_input(struct adi *adi, struct adi_port *port, int half)
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{
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struct input_dev *input_dev;
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char buf[ADI_MAX_NAME_LENGTH];
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int i, t;
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adi->dev = input_dev = input_allocate_device();
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if (!input_dev)
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return -ENOMEM;
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t = adi->id < ADI_ID_MAX ? adi->id : ADI_ID_MAX;
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snprintf(buf, ADI_MAX_PHYS_LENGTH, adi_names[t], adi->id);
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snprintf(adi->name, ADI_MAX_NAME_LENGTH, "Logitech %s [%s]", buf, adi->cname);
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snprintf(adi->phys, ADI_MAX_PHYS_LENGTH, "%s/input%d", port->gameport->phys, half);
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adi->abs = adi_abs[t];
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adi->key = adi_key[t];
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input_dev->name = adi->name;
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input_dev->phys = adi->phys;
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input_dev->id.bustype = BUS_GAMEPORT;
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input_dev->id.vendor = GAMEPORT_ID_VENDOR_LOGITECH;
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input_dev->id.product = adi->id;
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input_dev->id.version = 0x0100;
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input_dev->dev.parent = &port->gameport->dev;
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input_set_drvdata(input_dev, port);
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input_dev->open = adi_open;
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input_dev->close = adi_close;
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input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
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for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++)
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set_bit(adi->abs[i], input_dev->absbit);
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for (i = 0; i < adi->buttons; i++)
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set_bit(adi->key[i], input_dev->keybit);
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return 0;
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}
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static void adi_init_center(struct adi *adi)
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{
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int i, t, x;
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if (!adi->length)
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return;
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for (i = 0; i < adi->axes10 + adi->axes8 + (adi->hats + (adi->pad != -1)) * 2; i++) {
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t = adi->abs[i];
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x = input_abs_get_val(adi->dev, t);
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if (t == ABS_THROTTLE || t == ABS_RUDDER || adi->id == ADI_ID_WGPE)
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x = i < adi->axes10 ? 512 : 128;
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if (i < adi->axes10)
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input_set_abs_params(adi->dev, t, 64, x * 2 - 64, 2, 16);
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else if (i < adi->axes10 + adi->axes8)
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input_set_abs_params(adi->dev, t, 48, x * 2 - 48, 1, 16);
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else
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|
input_set_abs_params(adi->dev, t, -1, 1, 0, 0);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* adi_connect() probes for Logitech ADI joysticks.
|
|
*/
|
|
|
|
static int adi_connect(struct gameport *gameport, struct gameport_driver *drv)
|
|
{
|
|
struct adi_port *port;
|
|
int i;
|
|
int err;
|
|
|
|
port = kzalloc(sizeof(struct adi_port), GFP_KERNEL);
|
|
if (!port)
|
|
return -ENOMEM;
|
|
|
|
port->gameport = gameport;
|
|
|
|
gameport_set_drvdata(gameport, port);
|
|
|
|
err = gameport_open(gameport, drv, GAMEPORT_MODE_RAW);
|
|
if (err)
|
|
goto fail1;
|
|
|
|
adi_init_digital(gameport);
|
|
adi_read_packet(port);
|
|
|
|
if (port->adi[0].ret >= ADI_MIN_LEN_LENGTH)
|
|
adi_move_bits(port, adi_get_bits(port->adi, 10));
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
adi_id_decode(port->adi + i, port);
|
|
|
|
if (!port->adi[i].length)
|
|
continue;
|
|
|
|
err = adi_init_input(port->adi + i, port, i);
|
|
if (err)
|
|
goto fail2;
|
|
}
|
|
|
|
if (!port->adi[0].length && !port->adi[1].length) {
|
|
err = -ENODEV;
|
|
goto fail2;
|
|
}
|
|
|
|
gameport_set_poll_handler(gameport, adi_poll);
|
|
gameport_set_poll_interval(gameport, 20);
|
|
|
|
msleep(ADI_INIT_DELAY);
|
|
if (adi_read(port)) {
|
|
msleep(ADI_DATA_DELAY);
|
|
adi_read(port);
|
|
}
|
|
|
|
for (i = 0; i < 2; i++)
|
|
if (port->adi[i].length > 0) {
|
|
adi_init_center(port->adi + i);
|
|
err = input_register_device(port->adi[i].dev);
|
|
if (err)
|
|
goto fail3;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail3: while (--i >= 0) {
|
|
if (port->adi[i].length > 0) {
|
|
input_unregister_device(port->adi[i].dev);
|
|
port->adi[i].dev = NULL;
|
|
}
|
|
}
|
|
fail2: for (i = 0; i < 2; i++)
|
|
input_free_device(port->adi[i].dev);
|
|
gameport_close(gameport);
|
|
fail1: gameport_set_drvdata(gameport, NULL);
|
|
kfree(port);
|
|
return err;
|
|
}
|
|
|
|
static void adi_disconnect(struct gameport *gameport)
|
|
{
|
|
int i;
|
|
struct adi_port *port = gameport_get_drvdata(gameport);
|
|
|
|
for (i = 0; i < 2; i++)
|
|
if (port->adi[i].length > 0)
|
|
input_unregister_device(port->adi[i].dev);
|
|
gameport_close(gameport);
|
|
gameport_set_drvdata(gameport, NULL);
|
|
kfree(port);
|
|
}
|
|
|
|
static struct gameport_driver adi_drv = {
|
|
.driver = {
|
|
.name = "adi",
|
|
},
|
|
.description = DRIVER_DESC,
|
|
.connect = adi_connect,
|
|
.disconnect = adi_disconnect,
|
|
};
|
|
|
|
module_gameport_driver(adi_drv);
|