diff options
Diffstat (limited to 'drivers/input/joystick/iforce/iforce-packets.c')
| -rw-r--r-- | drivers/input/joystick/iforce/iforce-packets.c | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/drivers/input/joystick/iforce/iforce-packets.c b/drivers/input/joystick/iforce/iforce-packets.c new file mode 100644 index 000000000000..58728ebaaf80 --- /dev/null +++ b/drivers/input/joystick/iforce/iforce-packets.c @@ -0,0 +1,319 @@ +/* + * $Id: iforce-packets.c,v 1.16 2002/07/07 10:22:50 jdeneux Exp $ + * + * Copyright (c) 2000-2002 Vojtech Pavlik <vojtech@ucw.cz> + * Copyright (c) 2001-2002 Johann Deneux <deneux@ifrance.com> + * + * USB/RS232 I-Force joysticks and wheels. + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Should you need to contact me, the author, you can do so either by + * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: + * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic + */ + +#include "iforce.h" + +static struct { + __s32 x; + __s32 y; +} iforce_hat_to_axis[16] = {{ 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; + + +void iforce_dump_packet(char *msg, u16 cmd, unsigned char *data) +{ + int i; + + printk(KERN_DEBUG "iforce.c: %s ( cmd = %04x, data = ", msg, cmd); + for (i = 0; i < LO(cmd); i++) + printk("%02x ", data[i]); + printk(")\n"); +} + +/* + * Send a packet of bytes to the device + */ +int iforce_send_packet(struct iforce *iforce, u16 cmd, unsigned char* data) +{ + /* Copy data to buffer */ + int n = LO(cmd); + int c; + int empty; + int head, tail; + unsigned long flags; + +/* + * Update head and tail of xmit buffer + */ + spin_lock_irqsave(&iforce->xmit_lock, flags); + + head = iforce->xmit.head; + tail = iforce->xmit.tail; + + if (CIRC_SPACE(head, tail, XMIT_SIZE) < n+2) { + printk(KERN_WARNING "iforce.c: not enough space in xmit buffer to send new packet\n"); + spin_unlock_irqrestore(&iforce->xmit_lock, flags); + return -1; + } + + empty = head == tail; + XMIT_INC(iforce->xmit.head, n+2); + +/* + * Store packet in xmit buffer + */ + iforce->xmit.buf[head] = HI(cmd); + XMIT_INC(head, 1); + iforce->xmit.buf[head] = LO(cmd); + XMIT_INC(head, 1); + + c = CIRC_SPACE_TO_END(head, tail, XMIT_SIZE); + if (n < c) c=n; + + memcpy(&iforce->xmit.buf[head], + data, + c); + if (n != c) { + memcpy(&iforce->xmit.buf[0], + data + c, + n - c); + } + XMIT_INC(head, n); + + spin_unlock_irqrestore(&iforce->xmit_lock, flags); +/* + * If necessary, start the transmission + */ + switch (iforce->bus) { + +#ifdef CONFIG_JOYSTICK_IFORCE_232 + case IFORCE_232: + if (empty) + iforce_serial_xmit(iforce); + break; +#endif +#ifdef CONFIG_JOYSTICK_IFORCE_USB + case IFORCE_USB: + + if (iforce->usbdev && empty && + !test_and_set_bit(IFORCE_XMIT_RUNNING, iforce->xmit_flags)) { + + iforce_usb_xmit(iforce); + } + break; +#endif + } + return 0; +} + +/* Start or stop an effect */ +int iforce_control_playback(struct iforce* iforce, u16 id, unsigned int value) +{ + unsigned char data[3]; + +printk(KERN_DEBUG "iforce-packets.c: control_playback %d %d\n", id, value); + + data[0] = LO(id); + data[1] = (value > 0) ? ((value > 1) ? 0x41 : 0x01) : 0; + data[2] = LO(value); + return iforce_send_packet(iforce, FF_CMD_PLAY, data); +} + +/* Mark an effect that was being updated as ready. That means it can be updated + * again */ +static int mark_core_as_ready(struct iforce *iforce, unsigned short addr) +{ + int i; + for (i=0; i<iforce->dev.ff_effects_max; ++i) { + if (test_bit(FF_CORE_IS_USED, iforce->core_effects[i].flags) && + (iforce->core_effects[i].mod1_chunk.start == addr || + iforce->core_effects[i].mod2_chunk.start == addr)) { + clear_bit(FF_CORE_UPDATE, iforce->core_effects[i].flags); + return 0; + } + } + printk(KERN_WARNING "iforce-packets.c: unused effect %04x updated !!!\n", addr); + return -1; +} + +void iforce_process_packet(struct iforce *iforce, u16 cmd, unsigned char *data, struct pt_regs *regs) +{ + struct input_dev *dev = &iforce->dev; + int i; + static int being_used = 0; + + if (being_used) + printk(KERN_WARNING "iforce-packets.c: re-entrant call to iforce_process %d\n", being_used); + being_used++; + +#ifdef CONFIG_JOYSTICK_IFORCE_232 + if (HI(iforce->expect_packet) == HI(cmd)) { + iforce->expect_packet = 0; + iforce->ecmd = cmd; + memcpy(iforce->edata, data, IFORCE_MAX_LENGTH); + wake_up(&iforce->wait); + } +#endif + + if (!iforce->type) { + being_used--; + return; + } + + switch (HI(cmd)) { + + case 0x01: /* joystick position data */ + case 0x03: /* wheel position data */ + + input_regs(dev, regs); + + if (HI(cmd) == 1) { + input_report_abs(dev, ABS_X, (__s16) (((__s16)data[1] << 8) | data[0])); + input_report_abs(dev, ABS_Y, (__s16) (((__s16)data[3] << 8) | data[2])); + input_report_abs(dev, ABS_THROTTLE, 255 - data[4]); + if (LO(cmd) >= 8 && test_bit(ABS_RUDDER ,dev->absbit)) + input_report_abs(dev, ABS_RUDDER, (__s8)data[7]); + } else { + input_report_abs(dev, ABS_WHEEL, (__s16) (((__s16)data[1] << 8) | data[0])); + input_report_abs(dev, ABS_GAS, 255 - data[2]); + input_report_abs(dev, ABS_BRAKE, 255 - data[3]); + } + + input_report_abs(dev, ABS_HAT0X, iforce_hat_to_axis[data[6] >> 4].x); + input_report_abs(dev, ABS_HAT0Y, iforce_hat_to_axis[data[6] >> 4].y); + + for (i = 0; iforce->type->btn[i] >= 0; i++) + input_report_key(dev, iforce->type->btn[i], data[(i >> 3) + 5] & (1 << (i & 7))); + + /* If there are untouched bits left, interpret them as the second hat */ + if (i <= 8) { + int btns = data[6]; + if (test_bit(ABS_HAT1X, dev->absbit)) { + if (btns & 8) input_report_abs(dev, ABS_HAT1X, -1); + else if (btns & 2) input_report_abs(dev, ABS_HAT1X, 1); + else input_report_abs(dev, ABS_HAT1X, 0); + } + if (test_bit(ABS_HAT1Y, dev->absbit)) { + if (btns & 1) input_report_abs(dev, ABS_HAT1Y, -1); + else if (btns & 4) input_report_abs(dev, ABS_HAT1Y, 1); + else input_report_abs(dev, ABS_HAT1Y, 0); + } + } + + input_sync(dev); + + break; + + case 0x02: /* status report */ + input_regs(dev, regs); + input_report_key(dev, BTN_DEAD, data[0] & 0x02); + input_sync(dev); + + /* Check if an effect was just started or stopped */ + i = data[1] & 0x7f; + if (data[1] & 0x80) { + if (!test_and_set_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) { + /* Report play event */ + input_report_ff_status(dev, i, FF_STATUS_PLAYING); + } + } + else if (test_and_clear_bit(FF_CORE_IS_PLAYED, iforce->core_effects[i].flags)) { + /* Report stop event */ + input_report_ff_status(dev, i, FF_STATUS_STOPPED); + } + if (LO(cmd) > 3) { + int j; + for (j=3; j<LO(cmd); j+=2) { + mark_core_as_ready(iforce, data[j] | (data[j+1]<<8)); + } + } + break; + } + being_used--; +} + +int iforce_get_id_packet(struct iforce *iforce, char *packet) +{ + DECLARE_WAITQUEUE(wait, current); + int timeout = HZ; /* 1 second */ + + switch (iforce->bus) { + + case IFORCE_USB: + +#ifdef CONFIG_JOYSTICK_IFORCE_USB + iforce->cr.bRequest = packet[0]; + iforce->ctrl->dev = iforce->usbdev; + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&iforce->wait, &wait); + + if (usb_submit_urb(iforce->ctrl, GFP_ATOMIC)) { + set_current_state(TASK_RUNNING); + remove_wait_queue(&iforce->wait, &wait); + return -1; + } + + while (timeout && iforce->ctrl->status == -EINPROGRESS) + timeout = schedule_timeout(timeout); + + set_current_state(TASK_RUNNING); + remove_wait_queue(&iforce->wait, &wait); + + if (!timeout) { + usb_unlink_urb(iforce->ctrl); + return -1; + } +#else + printk(KERN_ERR "iforce_get_id_packet: iforce->bus = USB!\n"); +#endif + break; + + case IFORCE_232: + +#ifdef CONFIG_JOYSTICK_IFORCE_232 + iforce->expect_packet = FF_CMD_QUERY; + iforce_send_packet(iforce, FF_CMD_QUERY, packet); + + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&iforce->wait, &wait); + + while (timeout && iforce->expect_packet) + timeout = schedule_timeout(timeout); + + set_current_state(TASK_RUNNING); + remove_wait_queue(&iforce->wait, &wait); + + if (!timeout) { + iforce->expect_packet = 0; + return -1; + } +#else + printk(KERN_ERR "iforce_get_id_packet: iforce->bus = SERIO!\n"); +#endif + break; + + default: + printk(KERN_ERR "iforce_get_id_packet: iforce->bus = %d\n", + iforce->bus); + break; + } + + return -(iforce->edata[0] != packet[0]); +} + |