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path: root/drivers/input/joystick/iforce/iforce-packets.c
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Diffstat (limited to 'drivers/input/joystick/iforce/iforce-packets.c')
-rw-r--r--drivers/input/joystick/iforce/iforce-packets.c319
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]);
+}
+