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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/input/joystick/db9.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/input/joystick/db9.c')
-rw-r--r-- | drivers/input/joystick/db9.c | 708 |
1 files changed, 708 insertions, 0 deletions
diff --git a/drivers/input/joystick/db9.c b/drivers/input/joystick/db9.c new file mode 100644 index 000000000..4fba28b1a --- /dev/null +++ b/drivers/input/joystick/db9.c @@ -0,0 +1,708 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (c) 1999-2001 Vojtech Pavlik + * + * Based on the work of: + * Andree Borrmann Mats Sjövall + */ + +/* + * Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver for Linux + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/parport.h> +#include <linux/input.h> +#include <linux/mutex.h> +#include <linux/slab.h> + +MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); +MODULE_DESCRIPTION("Atari, Amstrad, Commodore, Amiga, Sega, etc. joystick driver"); +MODULE_LICENSE("GPL"); + +struct db9_config { + int args[2]; + unsigned int nargs; +}; + +#define DB9_MAX_PORTS 3 +static struct db9_config db9_cfg[DB9_MAX_PORTS]; + +module_param_array_named(dev, db9_cfg[0].args, int, &db9_cfg[0].nargs, 0); +MODULE_PARM_DESC(dev, "Describes first attached device (<parport#>,<type>)"); +module_param_array_named(dev2, db9_cfg[1].args, int, &db9_cfg[1].nargs, 0); +MODULE_PARM_DESC(dev2, "Describes second attached device (<parport#>,<type>)"); +module_param_array_named(dev3, db9_cfg[2].args, int, &db9_cfg[2].nargs, 0); +MODULE_PARM_DESC(dev3, "Describes third attached device (<parport#>,<type>)"); + +#define DB9_ARG_PARPORT 0 +#define DB9_ARG_MODE 1 + +#define DB9_MULTI_STICK 0x01 +#define DB9_MULTI2_STICK 0x02 +#define DB9_GENESIS_PAD 0x03 +#define DB9_GENESIS5_PAD 0x05 +#define DB9_GENESIS6_PAD 0x06 +#define DB9_SATURN_PAD 0x07 +#define DB9_MULTI_0802 0x08 +#define DB9_MULTI_0802_2 0x09 +#define DB9_CD32_PAD 0x0A +#define DB9_SATURN_DPP 0x0B +#define DB9_SATURN_DPP_2 0x0C +#define DB9_MAX_PAD 0x0D + +#define DB9_UP 0x01 +#define DB9_DOWN 0x02 +#define DB9_LEFT 0x04 +#define DB9_RIGHT 0x08 +#define DB9_FIRE1 0x10 +#define DB9_FIRE2 0x20 +#define DB9_FIRE3 0x40 +#define DB9_FIRE4 0x80 + +#define DB9_NORMAL 0x0a +#define DB9_NOSELECT 0x08 + +#define DB9_GENESIS6_DELAY 14 +#define DB9_REFRESH_TIME HZ/100 + +#define DB9_MAX_DEVICES 2 + +struct db9_mode_data { + const char *name; + const short *buttons; + int n_buttons; + int n_pads; + int n_axis; + int bidirectional; + int reverse; +}; + +struct db9 { + struct input_dev *dev[DB9_MAX_DEVICES]; + struct timer_list timer; + struct pardevice *pd; + int mode; + int used; + int parportno; + struct mutex mutex; + char phys[DB9_MAX_DEVICES][32]; +}; + +static struct db9 *db9_base[3]; + +static const short db9_multi_btn[] = { BTN_TRIGGER, BTN_THUMB }; +static const short db9_genesis_btn[] = { BTN_START, BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_MODE }; +static const short db9_cd32_btn[] = { BTN_A, BTN_B, BTN_C, BTN_X, BTN_Y, BTN_Z, BTN_TL, BTN_TR, BTN_START }; +static const short db9_abs[] = { ABS_X, ABS_Y, ABS_RX, ABS_RY, ABS_RZ, ABS_Z, ABS_HAT0X, ABS_HAT0Y, ABS_HAT1X, ABS_HAT1Y }; + +static const struct db9_mode_data db9_modes[] = { + { NULL, NULL, 0, 0, 0, 0, 0 }, + { "Multisystem joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, + { "Multisystem joystick (2 fire)", db9_multi_btn, 2, 1, 2, 1, 1 }, + { "Genesis pad", db9_genesis_btn, 4, 1, 2, 1, 1 }, + { NULL, NULL, 0, 0, 0, 0, 0 }, + { "Genesis 5 pad", db9_genesis_btn, 6, 1, 2, 1, 1 }, + { "Genesis 6 pad", db9_genesis_btn, 8, 1, 2, 1, 1 }, + { "Saturn pad", db9_cd32_btn, 9, 6, 7, 0, 1 }, + { "Multisystem (0.8.0.2) joystick", db9_multi_btn, 1, 1, 2, 1, 1 }, + { "Multisystem (0.8.0.2-dual) joystick", db9_multi_btn, 1, 2, 2, 1, 1 }, + { "Amiga CD-32 pad", db9_cd32_btn, 7, 1, 2, 1, 1 }, + { "Saturn dpp", db9_cd32_btn, 9, 6, 7, 0, 0 }, + { "Saturn dpp dual", db9_cd32_btn, 9, 12, 7, 0, 0 }, +}; + +/* + * Saturn controllers + */ +#define DB9_SATURN_DELAY 300 +static const int db9_saturn_byte[] = { 1, 1, 1, 2, 2, 2, 2, 2, 1 }; +static const unsigned char db9_saturn_mask[] = { 0x04, 0x01, 0x02, 0x40, 0x20, 0x10, 0x08, 0x80, 0x08 }; + +/* + * db9_saturn_write_sub() writes 2 bit data. + */ +static void db9_saturn_write_sub(struct parport *port, int type, unsigned char data, int powered, int pwr_sub) +{ + unsigned char c; + + switch (type) { + case 1: /* DPP1 */ + c = 0x80 | 0x30 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | data; + parport_write_data(port, c); + break; + case 2: /* DPP2 */ + c = 0x40 | data << 4 | (powered ? 0x08 : 0) | (pwr_sub ? 0x04 : 0) | 0x03; + parport_write_data(port, c); + break; + case 0: /* DB9 */ + c = ((((data & 2) ? 2 : 0) | ((data & 1) ? 4 : 0)) ^ 0x02) | !powered; + parport_write_control(port, c); + break; + } +} + +/* + * gc_saturn_read_sub() reads 4 bit data. + */ +static unsigned char db9_saturn_read_sub(struct parport *port, int type) +{ + unsigned char data; + + if (type) { + /* DPP */ + data = parport_read_status(port) ^ 0x80; + return (data & 0x80 ? 1 : 0) | (data & 0x40 ? 2 : 0) + | (data & 0x20 ? 4 : 0) | (data & 0x10 ? 8 : 0); + } else { + /* DB9 */ + data = parport_read_data(port) & 0x0f; + return (data & 0x8 ? 1 : 0) | (data & 0x4 ? 2 : 0) + | (data & 0x2 ? 4 : 0) | (data & 0x1 ? 8 : 0); + } +} + +/* + * db9_saturn_read_analog() sends clock and reads 8 bit data. + */ +static unsigned char db9_saturn_read_analog(struct parport *port, int type, int powered) +{ + unsigned char data; + + db9_saturn_write_sub(port, type, 0, powered, 0); + udelay(DB9_SATURN_DELAY); + data = db9_saturn_read_sub(port, type) << 4; + db9_saturn_write_sub(port, type, 2, powered, 0); + udelay(DB9_SATURN_DELAY); + data |= db9_saturn_read_sub(port, type); + return data; +} + +/* + * db9_saturn_read_packet() reads whole saturn packet at connector + * and returns device identifier code. + */ +static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char *data, int type, int powered) +{ + int i, j; + unsigned char tmp; + + db9_saturn_write_sub(port, type, 3, powered, 0); + data[0] = db9_saturn_read_sub(port, type); + switch (data[0] & 0x0f) { + case 0xf: + /* 1111 no pad */ + return data[0] = 0xff; + case 0x4: case 0x4 | 0x8: + /* ?100 : digital controller */ + db9_saturn_write_sub(port, type, 0, powered, 1); + data[2] = db9_saturn_read_sub(port, type) << 4; + db9_saturn_write_sub(port, type, 2, powered, 1); + data[1] = db9_saturn_read_sub(port, type) << 4; + db9_saturn_write_sub(port, type, 1, powered, 1); + data[1] |= db9_saturn_read_sub(port, type); + db9_saturn_write_sub(port, type, 3, powered, 1); + /* data[2] |= db9_saturn_read_sub(port, type); */ + data[2] |= data[0]; + return data[0] = 0x02; + case 0x1: + /* 0001 : analog controller or multitap */ + db9_saturn_write_sub(port, type, 2, powered, 0); + udelay(DB9_SATURN_DELAY); + data[0] = db9_saturn_read_analog(port, type, powered); + if (data[0] != 0x41) { + /* read analog controller */ + for (i = 0; i < (data[0] & 0x0f); i++) + data[i + 1] = db9_saturn_read_analog(port, type, powered); + db9_saturn_write_sub(port, type, 3, powered, 0); + return data[0]; + } else { + /* read multitap */ + if (db9_saturn_read_analog(port, type, powered) != 0x60) + return data[0] = 0xff; + for (i = 0; i < 60; i += 10) { + data[i] = db9_saturn_read_analog(port, type, powered); + if (data[i] != 0xff) + /* read each pad */ + for (j = 0; j < (data[i] & 0x0f); j++) + data[i + j + 1] = db9_saturn_read_analog(port, type, powered); + } + db9_saturn_write_sub(port, type, 3, powered, 0); + return 0x41; + } + case 0x0: + /* 0000 : mouse */ + db9_saturn_write_sub(port, type, 2, powered, 0); + udelay(DB9_SATURN_DELAY); + tmp = db9_saturn_read_analog(port, type, powered); + if (tmp == 0xff) { + for (i = 0; i < 3; i++) + data[i + 1] = db9_saturn_read_analog(port, type, powered); + db9_saturn_write_sub(port, type, 3, powered, 0); + return data[0] = 0xe3; + } + fallthrough; + default: + return data[0]; + } +} + +/* + * db9_saturn_report() analyzes packet and reports. + */ +static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads) +{ + struct input_dev *dev; + int tmp, i, j; + + tmp = (id == 0x41) ? 60 : 10; + for (j = 0; j < tmp && n < max_pads; j += 10, n++) { + dev = devs[n]; + switch (data[j]) { + case 0x16: /* multi controller (analog 4 axis) */ + input_report_abs(dev, db9_abs[5], data[j + 6]); + fallthrough; + case 0x15: /* mission stick (analog 3 axis) */ + input_report_abs(dev, db9_abs[3], data[j + 4]); + input_report_abs(dev, db9_abs[4], data[j + 5]); + fallthrough; + case 0x13: /* racing controller (analog 1 axis) */ + input_report_abs(dev, db9_abs[2], data[j + 3]); + fallthrough; + case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ + case 0x02: /* digital pad (digital 2 axis + buttons) */ + input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); + input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); + for (i = 0; i < 9; i++) + input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); + break; + case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ + input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); + input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); + for (i = 0; i < 9; i++) + input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); + input_report_abs(dev, db9_abs[2], data[j + 3]); + input_report_abs(dev, db9_abs[3], data[j + 4]); + input_report_abs(dev, db9_abs[4], data[j + 5]); + /* + input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); + input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); + */ + input_report_abs(dev, db9_abs[6], data[j + 7]); + input_report_abs(dev, db9_abs[7], data[j + 8]); + input_report_abs(dev, db9_abs[5], data[j + 9]); + break; + case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ + input_report_key(dev, BTN_A, data[j + 3] & 0x80); + input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f); + break; + case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ + input_report_key(dev, BTN_START, data[j + 1] & 0x08); + input_report_key(dev, BTN_A, data[j + 1] & 0x04); + input_report_key(dev, BTN_C, data[j + 1] & 0x02); + input_report_key(dev, BTN_B, data[j + 1] & 0x01); + input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80); + input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ + break; + case 0xff: + default: /* no pad */ + input_report_abs(dev, db9_abs[0], 0); + input_report_abs(dev, db9_abs[1], 0); + for (i = 0; i < 9; i++) + input_report_key(dev, db9_cd32_btn[i], 0); + break; + } + } + return n; +} + +static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[]) +{ + unsigned char id, data[60]; + int type, n, max_pads; + int tmp, i; + + switch (mode) { + case DB9_SATURN_PAD: + type = 0; + n = 1; + break; + case DB9_SATURN_DPP: + type = 1; + n = 1; + break; + case DB9_SATURN_DPP_2: + type = 1; + n = 2; + break; + default: + return -1; + } + max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); + for (tmp = 0, i = 0; i < n; i++) { + id = db9_saturn_read_packet(port, data, type + i, 1); + tmp = db9_saturn_report(id, data, devs, tmp, max_pads); + } + return 0; +} + +static void db9_timer(struct timer_list *t) +{ + struct db9 *db9 = from_timer(db9, t, timer); + struct parport *port = db9->pd->port; + struct input_dev *dev = db9->dev[0]; + struct input_dev *dev2 = db9->dev[1]; + int data, i; + + switch (db9->mode) { + case DB9_MULTI_0802_2: + + data = parport_read_data(port) >> 3; + + input_report_abs(dev2, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev2, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + input_report_key(dev2, BTN_TRIGGER, ~data & DB9_FIRE1); + fallthrough; + + case DB9_MULTI_0802: + + data = parport_read_status(port) >> 3; + + input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + input_report_key(dev, BTN_TRIGGER, data & DB9_FIRE1); + break; + + case DB9_MULTI_STICK: + + data = parport_read_data(port); + + input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); + break; + + case DB9_MULTI2_STICK: + + data = parport_read_data(port); + + input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + input_report_key(dev, BTN_TRIGGER, ~data & DB9_FIRE1); + input_report_key(dev, BTN_THUMB, ~data & DB9_FIRE2); + break; + + case DB9_GENESIS_PAD: + + parport_write_control(port, DB9_NOSELECT); + data = parport_read_data(port); + + input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + input_report_key(dev, BTN_B, ~data & DB9_FIRE1); + input_report_key(dev, BTN_C, ~data & DB9_FIRE2); + + parport_write_control(port, DB9_NORMAL); + data = parport_read_data(port); + + input_report_key(dev, BTN_A, ~data & DB9_FIRE1); + input_report_key(dev, BTN_START, ~data & DB9_FIRE2); + break; + + case DB9_GENESIS5_PAD: + + parport_write_control(port, DB9_NOSELECT); + data = parport_read_data(port); + + input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + input_report_key(dev, BTN_B, ~data & DB9_FIRE1); + input_report_key(dev, BTN_C, ~data & DB9_FIRE2); + + parport_write_control(port, DB9_NORMAL); + data = parport_read_data(port); + + input_report_key(dev, BTN_A, ~data & DB9_FIRE1); + input_report_key(dev, BTN_X, ~data & DB9_FIRE2); + input_report_key(dev, BTN_Y, ~data & DB9_LEFT); + input_report_key(dev, BTN_START, ~data & DB9_RIGHT); + break; + + case DB9_GENESIS6_PAD: + + parport_write_control(port, DB9_NOSELECT); /* 1 */ + udelay(DB9_GENESIS6_DELAY); + data = parport_read_data(port); + + input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + input_report_key(dev, BTN_B, ~data & DB9_FIRE1); + input_report_key(dev, BTN_C, ~data & DB9_FIRE2); + + parport_write_control(port, DB9_NORMAL); + udelay(DB9_GENESIS6_DELAY); + data = parport_read_data(port); + + input_report_key(dev, BTN_A, ~data & DB9_FIRE1); + input_report_key(dev, BTN_START, ~data & DB9_FIRE2); + + parport_write_control(port, DB9_NOSELECT); /* 2 */ + udelay(DB9_GENESIS6_DELAY); + parport_write_control(port, DB9_NORMAL); + udelay(DB9_GENESIS6_DELAY); + parport_write_control(port, DB9_NOSELECT); /* 3 */ + udelay(DB9_GENESIS6_DELAY); + data=parport_read_data(port); + + input_report_key(dev, BTN_X, ~data & DB9_LEFT); + input_report_key(dev, BTN_Y, ~data & DB9_DOWN); + input_report_key(dev, BTN_Z, ~data & DB9_UP); + input_report_key(dev, BTN_MODE, ~data & DB9_RIGHT); + + parport_write_control(port, DB9_NORMAL); + udelay(DB9_GENESIS6_DELAY); + parport_write_control(port, DB9_NOSELECT); /* 4 */ + udelay(DB9_GENESIS6_DELAY); + parport_write_control(port, DB9_NORMAL); + break; + + case DB9_SATURN_PAD: + case DB9_SATURN_DPP: + case DB9_SATURN_DPP_2: + + db9_saturn(db9->mode, port, db9->dev); + break; + + case DB9_CD32_PAD: + + data = parport_read_data(port); + + input_report_abs(dev, ABS_X, (data & DB9_RIGHT ? 0 : 1) - (data & DB9_LEFT ? 0 : 1)); + input_report_abs(dev, ABS_Y, (data & DB9_DOWN ? 0 : 1) - (data & DB9_UP ? 0 : 1)); + + parport_write_control(port, 0x0a); + + for (i = 0; i < 7; i++) { + data = parport_read_data(port); + parport_write_control(port, 0x02); + parport_write_control(port, 0x0a); + input_report_key(dev, db9_cd32_btn[i], ~data & DB9_FIRE2); + } + + parport_write_control(port, 0x00); + break; + } + + input_sync(dev); + + mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); +} + +static int db9_open(struct input_dev *dev) +{ + struct db9 *db9 = input_get_drvdata(dev); + struct parport *port = db9->pd->port; + int err; + + err = mutex_lock_interruptible(&db9->mutex); + if (err) + return err; + + if (!db9->used++) { + parport_claim(db9->pd); + parport_write_data(port, 0xff); + if (db9_modes[db9->mode].reverse) { + parport_data_reverse(port); + parport_write_control(port, DB9_NORMAL); + } + mod_timer(&db9->timer, jiffies + DB9_REFRESH_TIME); + } + + mutex_unlock(&db9->mutex); + return 0; +} + +static void db9_close(struct input_dev *dev) +{ + struct db9 *db9 = input_get_drvdata(dev); + struct parport *port = db9->pd->port; + + mutex_lock(&db9->mutex); + if (!--db9->used) { + del_timer_sync(&db9->timer); + parport_write_control(port, 0x00); + parport_data_forward(port); + parport_release(db9->pd); + } + mutex_unlock(&db9->mutex); +} + +static void db9_attach(struct parport *pp) +{ + struct db9 *db9; + const struct db9_mode_data *db9_mode; + struct pardevice *pd; + struct input_dev *input_dev; + int i, j, port_idx; + int mode; + struct pardev_cb db9_parport_cb; + + for (port_idx = 0; port_idx < DB9_MAX_PORTS; port_idx++) { + if (db9_cfg[port_idx].nargs == 0 || + db9_cfg[port_idx].args[DB9_ARG_PARPORT] < 0) + continue; + + if (db9_cfg[port_idx].args[DB9_ARG_PARPORT] == pp->number) + break; + } + + if (port_idx == DB9_MAX_PORTS) { + pr_debug("Not using parport%d.\n", pp->number); + return; + } + + mode = db9_cfg[port_idx].args[DB9_ARG_MODE]; + + if (mode < 1 || mode >= DB9_MAX_PAD || !db9_modes[mode].n_buttons) { + printk(KERN_ERR "db9.c: Bad device type %d\n", mode); + return; + } + + db9_mode = &db9_modes[mode]; + + if (db9_mode->bidirectional && !(pp->modes & PARPORT_MODE_TRISTATE)) { + printk(KERN_ERR "db9.c: specified parport is not bidirectional\n"); + return; + } + + memset(&db9_parport_cb, 0, sizeof(db9_parport_cb)); + db9_parport_cb.flags = PARPORT_FLAG_EXCL; + + pd = parport_register_dev_model(pp, "db9", &db9_parport_cb, port_idx); + if (!pd) { + printk(KERN_ERR "db9.c: parport busy already - lp.o loaded?\n"); + return; + } + + db9 = kzalloc(sizeof(struct db9), GFP_KERNEL); + if (!db9) + goto err_unreg_pardev; + + mutex_init(&db9->mutex); + db9->pd = pd; + db9->mode = mode; + db9->parportno = pp->number; + timer_setup(&db9->timer, db9_timer, 0); + + for (i = 0; i < (min(db9_mode->n_pads, DB9_MAX_DEVICES)); i++) { + + db9->dev[i] = input_dev = input_allocate_device(); + if (!input_dev) { + printk(KERN_ERR "db9.c: Not enough memory for input device\n"); + goto err_unreg_devs; + } + + snprintf(db9->phys[i], sizeof(db9->phys[i]), + "%s/input%d", db9->pd->port->name, i); + + input_dev->name = db9_mode->name; + input_dev->phys = db9->phys[i]; + input_dev->id.bustype = BUS_PARPORT; + input_dev->id.vendor = 0x0002; + input_dev->id.product = mode; + input_dev->id.version = 0x0100; + + input_set_drvdata(input_dev, db9); + + input_dev->open = db9_open; + input_dev->close = db9_close; + + input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS); + for (j = 0; j < db9_mode->n_buttons; j++) + set_bit(db9_mode->buttons[j], input_dev->keybit); + for (j = 0; j < db9_mode->n_axis; j++) { + if (j < 2) + input_set_abs_params(input_dev, db9_abs[j], -1, 1, 0, 0); + else + input_set_abs_params(input_dev, db9_abs[j], 1, 255, 0, 0); + } + + if (input_register_device(input_dev)) + goto err_free_dev; + } + + db9_base[port_idx] = db9; + return; + + err_free_dev: + input_free_device(db9->dev[i]); + err_unreg_devs: + while (--i >= 0) + input_unregister_device(db9->dev[i]); + kfree(db9); + err_unreg_pardev: + parport_unregister_device(pd); +} + +static void db9_detach(struct parport *port) +{ + int i; + struct db9 *db9; + + for (i = 0; i < DB9_MAX_PORTS; i++) { + if (db9_base[i] && db9_base[i]->parportno == port->number) + break; + } + + if (i == DB9_MAX_PORTS) + return; + + db9 = db9_base[i]; + db9_base[i] = NULL; + + for (i = 0; i < min(db9_modes[db9->mode].n_pads, DB9_MAX_DEVICES); i++) + input_unregister_device(db9->dev[i]); + parport_unregister_device(db9->pd); + kfree(db9); +} + +static struct parport_driver db9_parport_driver = { + .name = "db9", + .match_port = db9_attach, + .detach = db9_detach, + .devmodel = true, +}; + +static int __init db9_init(void) +{ + int i; + int have_dev = 0; + + for (i = 0; i < DB9_MAX_PORTS; i++) { + if (db9_cfg[i].nargs == 0 || db9_cfg[i].args[DB9_ARG_PARPORT] < 0) + continue; + + if (db9_cfg[i].nargs < 2) { + printk(KERN_ERR "db9.c: Device type must be specified.\n"); + return -EINVAL; + } + + have_dev = 1; + } + + if (!have_dev) + return -ENODEV; + + return parport_register_driver(&db9_parport_driver); +} + +static void __exit db9_exit(void) +{ + parport_unregister_driver(&db9_parport_driver); +} + +module_init(db9_init); +module_exit(db9_exit); |