--- /dev/null
- POWER_SUPPLY_PROP_CAPACITY
+/*
+ * HID driver for Nintendo Wiimote devices
+ * Copyright (c) 2011 David Herrmann
+ */
+
+/*
+ * 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.
+ */
+
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/input.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/power_supply.h>
+#include <linux/spinlock.h>
+#include "hid-ids.h"
+#include "hid-wiimote.h"
+
+enum wiiproto_keys {
+ WIIPROTO_KEY_LEFT,
+ WIIPROTO_KEY_RIGHT,
+ WIIPROTO_KEY_UP,
+ WIIPROTO_KEY_DOWN,
+ WIIPROTO_KEY_PLUS,
+ WIIPROTO_KEY_MINUS,
+ WIIPROTO_KEY_ONE,
+ WIIPROTO_KEY_TWO,
+ WIIPROTO_KEY_A,
+ WIIPROTO_KEY_B,
+ WIIPROTO_KEY_HOME,
+ WIIPROTO_KEY_COUNT
+};
+
+static __u16 wiiproto_keymap[] = {
+ KEY_LEFT, /* WIIPROTO_KEY_LEFT */
+ KEY_RIGHT, /* WIIPROTO_KEY_RIGHT */
+ KEY_UP, /* WIIPROTO_KEY_UP */
+ KEY_DOWN, /* WIIPROTO_KEY_DOWN */
+ KEY_NEXT, /* WIIPROTO_KEY_PLUS */
+ KEY_PREVIOUS, /* WIIPROTO_KEY_MINUS */
+ BTN_1, /* WIIPROTO_KEY_ONE */
+ BTN_2, /* WIIPROTO_KEY_TWO */
+ BTN_A, /* WIIPROTO_KEY_A */
+ BTN_B, /* WIIPROTO_KEY_B */
+ BTN_MODE, /* WIIPROTO_KEY_HOME */
+};
+
+static enum power_supply_property wiimote_battery_props[] = {
++ POWER_SUPPLY_PROP_CAPACITY,
++ POWER_SUPPLY_PROP_SCOPE,
+};
+
+static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
+ size_t count)
+{
+ __u8 *buf;
+ ssize_t ret;
+
+ if (!hdev->hid_output_raw_report)
+ return -ENODEV;
+
+ buf = kmemdup(buffer, count, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ret = hdev->hid_output_raw_report(hdev, buf, count, HID_OUTPUT_REPORT);
+
+ kfree(buf);
+ return ret;
+}
+
+static void wiimote_worker(struct work_struct *work)
+{
+ struct wiimote_data *wdata = container_of(work, struct wiimote_data,
+ worker);
+ unsigned long flags;
+
+ spin_lock_irqsave(&wdata->qlock, flags);
+
+ while (wdata->head != wdata->tail) {
+ spin_unlock_irqrestore(&wdata->qlock, flags);
+ wiimote_hid_send(wdata->hdev, wdata->outq[wdata->tail].data,
+ wdata->outq[wdata->tail].size);
+ spin_lock_irqsave(&wdata->qlock, flags);
+
+ wdata->tail = (wdata->tail + 1) % WIIMOTE_BUFSIZE;
+ }
+
+ spin_unlock_irqrestore(&wdata->qlock, flags);
+}
+
+static void wiimote_queue(struct wiimote_data *wdata, const __u8 *buffer,
+ size_t count)
+{
+ unsigned long flags;
+ __u8 newhead;
+
+ if (count > HID_MAX_BUFFER_SIZE) {
+ hid_warn(wdata->hdev, "Sending too large output report\n");
+ return;
+ }
+
+ /*
+ * Copy new request into our output queue and check whether the
+ * queue is full. If it is full, discard this request.
+ * If it is empty we need to start a new worker that will
+ * send out the buffer to the hid device.
+ * If the queue is not empty, then there must be a worker
+ * that is currently sending out our buffer and this worker
+ * will reschedule itself until the queue is empty.
+ */
+
+ spin_lock_irqsave(&wdata->qlock, flags);
+
+ memcpy(wdata->outq[wdata->head].data, buffer, count);
+ wdata->outq[wdata->head].size = count;
+ newhead = (wdata->head + 1) % WIIMOTE_BUFSIZE;
+
+ if (wdata->head == wdata->tail) {
+ wdata->head = newhead;
+ schedule_work(&wdata->worker);
+ } else if (newhead != wdata->tail) {
+ wdata->head = newhead;
+ } else {
+ hid_warn(wdata->hdev, "Output queue is full");
+ }
+
+ spin_unlock_irqrestore(&wdata->qlock, flags);
+}
+
+/*
+ * This sets the rumble bit on the given output report if rumble is
+ * currently enabled.
+ * \cmd1 must point to the second byte in the output report => &cmd[1]
+ * This must be called on nearly every output report before passing it
+ * into the output queue!
+ */
+static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
+{
+ if (wdata->state.flags & WIIPROTO_FLAG_RUMBLE)
+ *cmd1 |= 0x01;
+}
+
+static void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
+{
+ __u8 cmd[2];
+
+ rumble = !!rumble;
+ if (rumble == !!(wdata->state.flags & WIIPROTO_FLAG_RUMBLE))
+ return;
+
+ if (rumble)
+ wdata->state.flags |= WIIPROTO_FLAG_RUMBLE;
+ else
+ wdata->state.flags &= ~WIIPROTO_FLAG_RUMBLE;
+
+ cmd[0] = WIIPROTO_REQ_RUMBLE;
+ cmd[1] = 0;
+
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+static void wiiproto_req_leds(struct wiimote_data *wdata, int leds)
+{
+ __u8 cmd[2];
+
+ leds &= WIIPROTO_FLAGS_LEDS;
+ if ((wdata->state.flags & WIIPROTO_FLAGS_LEDS) == leds)
+ return;
+ wdata->state.flags = (wdata->state.flags & ~WIIPROTO_FLAGS_LEDS) | leds;
+
+ cmd[0] = WIIPROTO_REQ_LED;
+ cmd[1] = 0;
+
+ if (leds & WIIPROTO_FLAG_LED1)
+ cmd[1] |= 0x10;
+ if (leds & WIIPROTO_FLAG_LED2)
+ cmd[1] |= 0x20;
+ if (leds & WIIPROTO_FLAG_LED3)
+ cmd[1] |= 0x40;
+ if (leds & WIIPROTO_FLAG_LED4)
+ cmd[1] |= 0x80;
+
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+/*
+ * Check what peripherals of the wiimote are currently
+ * active and select a proper DRM that supports all of
+ * the requested data inputs.
+ */
+static __u8 select_drm(struct wiimote_data *wdata)
+{
+ __u8 ir = wdata->state.flags & WIIPROTO_FLAGS_IR;
+ bool ext = wiiext_active(wdata);
+
+ if (ir == WIIPROTO_FLAG_IR_BASIC) {
+ if (wdata->state.flags & WIIPROTO_FLAG_ACCEL)
+ return WIIPROTO_REQ_DRM_KAIE;
+ else
+ return WIIPROTO_REQ_DRM_KIE;
+ } else if (ir == WIIPROTO_FLAG_IR_EXT) {
+ return WIIPROTO_REQ_DRM_KAI;
+ } else if (ir == WIIPROTO_FLAG_IR_FULL) {
+ return WIIPROTO_REQ_DRM_SKAI1;
+ } else {
+ if (wdata->state.flags & WIIPROTO_FLAG_ACCEL) {
+ if (ext)
+ return WIIPROTO_REQ_DRM_KAE;
+ else
+ return WIIPROTO_REQ_DRM_KA;
+ } else {
+ if (ext)
+ return WIIPROTO_REQ_DRM_KE;
+ else
+ return WIIPROTO_REQ_DRM_K;
+ }
+ }
+}
+
+void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm)
+{
+ __u8 cmd[3];
+
+ if (drm == WIIPROTO_REQ_NULL)
+ drm = select_drm(wdata);
+
+ cmd[0] = WIIPROTO_REQ_DRM;
+ cmd[1] = 0;
+ cmd[2] = drm;
+
+ wdata->state.drm = drm;
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+static void wiiproto_req_status(struct wiimote_data *wdata)
+{
+ __u8 cmd[2];
+
+ cmd[0] = WIIPROTO_REQ_SREQ;
+ cmd[1] = 0;
+
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+static void wiiproto_req_accel(struct wiimote_data *wdata, __u8 accel)
+{
+ accel = !!accel;
+ if (accel == !!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
+ return;
+
+ if (accel)
+ wdata->state.flags |= WIIPROTO_FLAG_ACCEL;
+ else
+ wdata->state.flags &= ~WIIPROTO_FLAG_ACCEL;
+
+ wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
+}
+
+static void wiiproto_req_ir1(struct wiimote_data *wdata, __u8 flags)
+{
+ __u8 cmd[2];
+
+ cmd[0] = WIIPROTO_REQ_IR1;
+ cmd[1] = flags;
+
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+static void wiiproto_req_ir2(struct wiimote_data *wdata, __u8 flags)
+{
+ __u8 cmd[2];
+
+ cmd[0] = WIIPROTO_REQ_IR2;
+ cmd[1] = flags;
+
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+#define wiiproto_req_wreg(wdata, os, buf, sz) \
+ wiiproto_req_wmem((wdata), false, (os), (buf), (sz))
+
+#define wiiproto_req_weeprom(wdata, os, buf, sz) \
+ wiiproto_req_wmem((wdata), true, (os), (buf), (sz))
+
+static void wiiproto_req_wmem(struct wiimote_data *wdata, bool eeprom,
+ __u32 offset, const __u8 *buf, __u8 size)
+{
+ __u8 cmd[22];
+
+ if (size > 16 || size == 0) {
+ hid_warn(wdata->hdev, "Invalid length %d wmem request\n", size);
+ return;
+ }
+
+ memset(cmd, 0, sizeof(cmd));
+ cmd[0] = WIIPROTO_REQ_WMEM;
+ cmd[2] = (offset >> 16) & 0xff;
+ cmd[3] = (offset >> 8) & 0xff;
+ cmd[4] = offset & 0xff;
+ cmd[5] = size;
+ memcpy(&cmd[6], buf, size);
+
+ if (!eeprom)
+ cmd[1] |= 0x04;
+
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+void wiiproto_req_rmem(struct wiimote_data *wdata, bool eeprom, __u32 offset,
+ __u16 size)
+{
+ __u8 cmd[7];
+
+ if (size == 0) {
+ hid_warn(wdata->hdev, "Invalid length %d rmem request\n", size);
+ return;
+ }
+
+ cmd[0] = WIIPROTO_REQ_RMEM;
+ cmd[1] = 0;
+ cmd[2] = (offset >> 16) & 0xff;
+ cmd[3] = (offset >> 8) & 0xff;
+ cmd[4] = offset & 0xff;
+ cmd[5] = (size >> 8) & 0xff;
+ cmd[6] = size & 0xff;
+
+ if (!eeprom)
+ cmd[1] |= 0x04;
+
+ wiiproto_keep_rumble(wdata, &cmd[1]);
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+/* requries the cmd-mutex to be held */
+int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
+ const __u8 *wmem, __u8 size)
+{
+ unsigned long flags;
+ int ret;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wiimote_cmd_set(wdata, WIIPROTO_REQ_WMEM, 0);
+ wiiproto_req_wreg(wdata, offset, wmem, size);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ ret = wiimote_cmd_wait(wdata);
+ if (!ret && wdata->state.cmd_err)
+ ret = -EIO;
+
+ return ret;
+}
+
+/* requries the cmd-mutex to be held */
+ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset, __u8 *rmem,
+ __u8 size)
+{
+ unsigned long flags;
+ ssize_t ret;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wdata->state.cmd_read_size = size;
+ wdata->state.cmd_read_buf = rmem;
+ wiimote_cmd_set(wdata, WIIPROTO_REQ_RMEM, offset & 0xffff);
+ wiiproto_req_rreg(wdata, offset, size);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ ret = wiimote_cmd_wait(wdata);
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wdata->state.cmd_read_buf = NULL;
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ if (!ret) {
+ if (wdata->state.cmd_read_size == 0)
+ ret = -EIO;
+ else
+ ret = wdata->state.cmd_read_size;
+ }
+
+ return ret;
+}
+
+static int wiimote_battery_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct wiimote_data *wdata = container_of(psy,
+ struct wiimote_data, battery);
+ int ret = 0, state;
+ unsigned long flags;
+
++ if (psp == POWER_SUPPLY_PROP_SCOPE) {
++ val->intval = POWER_SUPPLY_SCOPE_DEVICE;
++ return 0;
++ }
++
+ ret = wiimote_cmd_acquire(wdata);
+ if (ret)
+ return ret;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wiimote_cmd_set(wdata, WIIPROTO_REQ_SREQ, 0);
+ wiiproto_req_status(wdata);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ ret = wiimote_cmd_wait(wdata);
+ state = wdata->state.cmd_battery;
+ wiimote_cmd_release(wdata);
+
+ if (ret)
+ return ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_CAPACITY:
+ val->intval = state * 100 / 255;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int wiimote_init_ir(struct wiimote_data *wdata, __u16 mode)
+{
+ int ret;
+ unsigned long flags;
+ __u8 format = 0;
+ static const __u8 data_enable[] = { 0x01 };
+ static const __u8 data_sens1[] = { 0x02, 0x00, 0x00, 0x71, 0x01,
+ 0x00, 0xaa, 0x00, 0x64 };
+ static const __u8 data_sens2[] = { 0x63, 0x03 };
+ static const __u8 data_fin[] = { 0x08 };
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+
+ if (mode == (wdata->state.flags & WIIPROTO_FLAGS_IR)) {
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+ return 0;
+ }
+
+ if (mode == 0) {
+ wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
+ wiiproto_req_ir1(wdata, 0);
+ wiiproto_req_ir2(wdata, 0);
+ wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+ return 0;
+ }
+
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ ret = wiimote_cmd_acquire(wdata);
+ if (ret)
+ return ret;
+
+ /* send PIXEL CLOCK ENABLE cmd first */
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wiimote_cmd_set(wdata, WIIPROTO_REQ_IR1, 0);
+ wiiproto_req_ir1(wdata, 0x06);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ ret = wiimote_cmd_wait(wdata);
+ if (ret)
+ goto unlock;
+ if (wdata->state.cmd_err) {
+ ret = -EIO;
+ goto unlock;
+ }
+
+ /* enable IR LOGIC */
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wiimote_cmd_set(wdata, WIIPROTO_REQ_IR2, 0);
+ wiiproto_req_ir2(wdata, 0x06);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ ret = wiimote_cmd_wait(wdata);
+ if (ret)
+ goto unlock;
+ if (wdata->state.cmd_err) {
+ ret = -EIO;
+ goto unlock;
+ }
+
+ /* enable IR cam but do not make it send data, yet */
+ ret = wiimote_cmd_write(wdata, 0xb00030, data_enable,
+ sizeof(data_enable));
+ if (ret)
+ goto unlock;
+
+ /* write first sensitivity block */
+ ret = wiimote_cmd_write(wdata, 0xb00000, data_sens1,
+ sizeof(data_sens1));
+ if (ret)
+ goto unlock;
+
+ /* write second sensitivity block */
+ ret = wiimote_cmd_write(wdata, 0xb0001a, data_sens2,
+ sizeof(data_sens2));
+ if (ret)
+ goto unlock;
+
+ /* put IR cam into desired state */
+ switch (mode) {
+ case WIIPROTO_FLAG_IR_FULL:
+ format = 5;
+ break;
+ case WIIPROTO_FLAG_IR_EXT:
+ format = 3;
+ break;
+ case WIIPROTO_FLAG_IR_BASIC:
+ format = 1;
+ break;
+ }
+ ret = wiimote_cmd_write(wdata, 0xb00033, &format, sizeof(format));
+ if (ret)
+ goto unlock;
+
+ /* make IR cam send data */
+ ret = wiimote_cmd_write(wdata, 0xb00030, data_fin, sizeof(data_fin));
+ if (ret)
+ goto unlock;
+
+ /* request new DRM mode compatible to IR mode */
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wdata->state.flags &= ~WIIPROTO_FLAGS_IR;
+ wdata->state.flags |= mode & WIIPROTO_FLAGS_IR;
+ wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+unlock:
+ wiimote_cmd_release(wdata);
+ return ret;
+}
+
+static enum led_brightness wiimote_leds_get(struct led_classdev *led_dev)
+{
+ struct wiimote_data *wdata;
+ struct device *dev = led_dev->dev->parent;
+ int i;
+ unsigned long flags;
+ bool value = false;
+
+ wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
+
+ for (i = 0; i < 4; ++i) {
+ if (wdata->leds[i] == led_dev) {
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ value = wdata->state.flags & WIIPROTO_FLAG_LED(i + 1);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+ break;
+ }
+ }
+
+ return value ? LED_FULL : LED_OFF;
+}
+
+static void wiimote_leds_set(struct led_classdev *led_dev,
+ enum led_brightness value)
+{
+ struct wiimote_data *wdata;
+ struct device *dev = led_dev->dev->parent;
+ int i;
+ unsigned long flags;
+ __u8 state, flag;
+
+ wdata = hid_get_drvdata(container_of(dev, struct hid_device, dev));
+
+ for (i = 0; i < 4; ++i) {
+ if (wdata->leds[i] == led_dev) {
+ flag = WIIPROTO_FLAG_LED(i + 1);
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ state = wdata->state.flags;
+ if (value == LED_OFF)
+ wiiproto_req_leds(wdata, state & ~flag);
+ else
+ wiiproto_req_leds(wdata, state | flag);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+ break;
+ }
+ }
+}
+
+static int wiimote_ff_play(struct input_dev *dev, void *data,
+ struct ff_effect *eff)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+ __u8 value;
+ unsigned long flags;
+
+ /*
+ * The wiimote supports only a single rumble motor so if any magnitude
+ * is set to non-zero then we start the rumble motor. If both are set to
+ * zero, we stop the rumble motor.
+ */
+
+ if (eff->u.rumble.strong_magnitude || eff->u.rumble.weak_magnitude)
+ value = 1;
+ else
+ value = 0;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wiiproto_req_rumble(wdata, value);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ return 0;
+}
+
+static int wiimote_input_open(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+
+ return hid_hw_open(wdata->hdev);
+}
+
+static void wiimote_input_close(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+
+ hid_hw_close(wdata->hdev);
+}
+
+static int wiimote_accel_open(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+ int ret;
+ unsigned long flags;
+
+ ret = hid_hw_open(wdata->hdev);
+ if (ret)
+ return ret;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wiiproto_req_accel(wdata, true);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ return 0;
+}
+
+static void wiimote_accel_close(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+ wiiproto_req_accel(wdata, false);
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ hid_hw_close(wdata->hdev);
+}
+
+static int wiimote_ir_open(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+ int ret;
+
+ ret = hid_hw_open(wdata->hdev);
+ if (ret)
+ return ret;
+
+ ret = wiimote_init_ir(wdata, WIIPROTO_FLAG_IR_BASIC);
+ if (ret) {
+ hid_hw_close(wdata->hdev);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void wiimote_ir_close(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+
+ wiimote_init_ir(wdata, 0);
+ hid_hw_close(wdata->hdev);
+}
+
+static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
+{
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_LEFT],
+ !!(payload[0] & 0x01));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_RIGHT],
+ !!(payload[0] & 0x02));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_DOWN],
+ !!(payload[0] & 0x04));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_UP],
+ !!(payload[0] & 0x08));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_PLUS],
+ !!(payload[0] & 0x10));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_TWO],
+ !!(payload[1] & 0x01));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_ONE],
+ !!(payload[1] & 0x02));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_B],
+ !!(payload[1] & 0x04));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_A],
+ !!(payload[1] & 0x08));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_MINUS],
+ !!(payload[1] & 0x10));
+ input_report_key(wdata->input, wiiproto_keymap[WIIPROTO_KEY_HOME],
+ !!(payload[1] & 0x80));
+ input_sync(wdata->input);
+}
+
+static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
+{
+ __u16 x, y, z;
+
+ if (!(wdata->state.flags & WIIPROTO_FLAG_ACCEL))
+ return;
+
+ /*
+ * payload is: BB BB XX YY ZZ
+ * Accelerometer data is encoded into 3 10bit values. XX, YY and ZZ
+ * contain the upper 8 bits of each value. The lower 2 bits are
+ * contained in the buttons data BB BB.
+ * Bits 6 and 7 of the first buttons byte BB is the lower 2 bits of the
+ * X accel value. Bit 5 of the second buttons byte is the 2nd bit of Y
+ * accel value and bit 6 is the second bit of the Z value.
+ * The first bit of Y and Z values is not available and always set to 0.
+ * 0x200 is returned on no movement.
+ */
+
+ x = payload[2] << 2;
+ y = payload[3] << 2;
+ z = payload[4] << 2;
+
+ x |= (payload[0] >> 5) & 0x3;
+ y |= (payload[1] >> 4) & 0x2;
+ z |= (payload[1] >> 5) & 0x2;
+
+ input_report_abs(wdata->accel, ABS_RX, x - 0x200);
+ input_report_abs(wdata->accel, ABS_RY, y - 0x200);
+ input_report_abs(wdata->accel, ABS_RZ, z - 0x200);
+ input_sync(wdata->accel);
+}
+
+#define ir_to_input0(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT0X, ABS_HAT0Y)
+#define ir_to_input1(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT1X, ABS_HAT1Y)
+#define ir_to_input2(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT2X, ABS_HAT2Y)
+#define ir_to_input3(wdata, ir, packed) __ir_to_input((wdata), (ir), (packed), \
+ ABS_HAT3X, ABS_HAT3Y)
+
+static void __ir_to_input(struct wiimote_data *wdata, const __u8 *ir,
+ bool packed, __u8 xid, __u8 yid)
+{
+ __u16 x, y;
+
+ if (!(wdata->state.flags & WIIPROTO_FLAGS_IR))
+ return;
+
+ /*
+ * Basic IR data is encoded into 3 bytes. The first two bytes are the
+ * upper 8 bit of the X/Y data, the 3rd byte contains the lower 2 bits
+ * of both.
+ * If data is packed, then the 3rd byte is put first and slightly
+ * reordered. This allows to interleave packed and non-packed data to
+ * have two IR sets in 5 bytes instead of 6.
+ * The resulting 10bit X/Y values are passed to the ABS_HATXY input dev.
+ */
+
+ if (packed) {
+ x = ir[1] << 2;
+ y = ir[2] << 2;
+
+ x |= ir[0] & 0x3;
+ y |= (ir[0] >> 2) & 0x3;
+ } else {
+ x = ir[0] << 2;
+ y = ir[1] << 2;
+
+ x |= (ir[2] >> 4) & 0x3;
+ y |= (ir[2] >> 6) & 0x3;
+ }
+
+ input_report_abs(wdata->ir, xid, x);
+ input_report_abs(wdata->ir, yid, y);
+}
+
+static void handler_status(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+
+ /* on status reports the drm is reset so we need to resend the drm */
+ wiiproto_req_drm(wdata, WIIPROTO_REQ_NULL);
+
+ wiiext_event(wdata, payload[2] & 0x02);
+
+ if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_SREQ, 0)) {
+ wdata->state.cmd_battery = payload[5];
+ wiimote_cmd_complete(wdata);
+ }
+}
+
+static void handler_data(struct wiimote_data *wdata, const __u8 *payload)
+{
+ __u16 offset = payload[3] << 8 | payload[4];
+ __u8 size = (payload[2] >> 4) + 1;
+ __u8 err = payload[2] & 0x0f;
+
+ handler_keys(wdata, payload);
+
+ if (wiimote_cmd_pending(wdata, WIIPROTO_REQ_RMEM, offset)) {
+ if (err)
+ size = 0;
+ else if (size > wdata->state.cmd_read_size)
+ size = wdata->state.cmd_read_size;
+
+ wdata->state.cmd_read_size = size;
+ if (wdata->state.cmd_read_buf)
+ memcpy(wdata->state.cmd_read_buf, &payload[5], size);
+ wiimote_cmd_complete(wdata);
+ }
+}
+
+static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
+{
+ __u8 err = payload[3];
+ __u8 cmd = payload[2];
+
+ handler_keys(wdata, payload);
+
+ if (wiimote_cmd_pending(wdata, cmd, 0)) {
+ wdata->state.cmd_err = err;
+ wiimote_cmd_complete(wdata);
+ } else if (err) {
+ hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
+ cmd);
+ }
+}
+
+static void handler_drm_KA(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ handler_accel(wdata, payload);
+}
+
+static void handler_drm_KE(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ wiiext_handle(wdata, &payload[2]);
+}
+
+static void handler_drm_KAI(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ handler_accel(wdata, payload);
+ ir_to_input0(wdata, &payload[5], false);
+ ir_to_input1(wdata, &payload[8], false);
+ ir_to_input2(wdata, &payload[11], false);
+ ir_to_input3(wdata, &payload[14], false);
+ input_sync(wdata->ir);
+}
+
+static void handler_drm_KEE(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ wiiext_handle(wdata, &payload[2]);
+}
+
+static void handler_drm_KIE(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ ir_to_input0(wdata, &payload[2], false);
+ ir_to_input1(wdata, &payload[4], true);
+ ir_to_input2(wdata, &payload[7], false);
+ ir_to_input3(wdata, &payload[9], true);
+ input_sync(wdata->ir);
+ wiiext_handle(wdata, &payload[12]);
+}
+
+static void handler_drm_KAE(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ handler_accel(wdata, payload);
+ wiiext_handle(wdata, &payload[5]);
+}
+
+static void handler_drm_KAIE(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+ handler_accel(wdata, payload);
+ ir_to_input0(wdata, &payload[5], false);
+ ir_to_input1(wdata, &payload[7], true);
+ ir_to_input2(wdata, &payload[10], false);
+ ir_to_input3(wdata, &payload[12], true);
+ input_sync(wdata->ir);
+ wiiext_handle(wdata, &payload[15]);
+}
+
+static void handler_drm_E(struct wiimote_data *wdata, const __u8 *payload)
+{
+ wiiext_handle(wdata, payload);
+}
+
+static void handler_drm_SKAI1(struct wiimote_data *wdata, const __u8 *payload)
+{
+ handler_keys(wdata, payload);
+
+ wdata->state.accel_split[0] = payload[2];
+ wdata->state.accel_split[1] = (payload[0] >> 1) & (0x10 | 0x20);
+ wdata->state.accel_split[1] |= (payload[1] << 1) & (0x40 | 0x80);
+
+ ir_to_input0(wdata, &payload[3], false);
+ ir_to_input1(wdata, &payload[12], false);
+ input_sync(wdata->ir);
+}
+
+static void handler_drm_SKAI2(struct wiimote_data *wdata, const __u8 *payload)
+{
+ __u8 buf[5];
+
+ handler_keys(wdata, payload);
+
+ wdata->state.accel_split[1] |= (payload[0] >> 5) & (0x01 | 0x02);
+ wdata->state.accel_split[1] |= (payload[1] >> 3) & (0x04 | 0x08);
+
+ buf[0] = 0;
+ buf[1] = 0;
+ buf[2] = wdata->state.accel_split[0];
+ buf[3] = payload[2];
+ buf[4] = wdata->state.accel_split[1];
+ handler_accel(wdata, buf);
+
+ ir_to_input2(wdata, &payload[3], false);
+ ir_to_input3(wdata, &payload[12], false);
+ input_sync(wdata->ir);
+}
+
+struct wiiproto_handler {
+ __u8 id;
+ size_t size;
+ void (*func)(struct wiimote_data *wdata, const __u8 *payload);
+};
+
+static struct wiiproto_handler handlers[] = {
+ { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
+ { .id = WIIPROTO_REQ_DATA, .size = 21, .func = handler_data },
+ { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
+ { .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
+ { .id = WIIPROTO_REQ_DRM_KA, .size = 5, .func = handler_drm_KA },
+ { .id = WIIPROTO_REQ_DRM_KE, .size = 10, .func = handler_drm_KE },
+ { .id = WIIPROTO_REQ_DRM_KAI, .size = 17, .func = handler_drm_KAI },
+ { .id = WIIPROTO_REQ_DRM_KEE, .size = 21, .func = handler_drm_KEE },
+ { .id = WIIPROTO_REQ_DRM_KAE, .size = 21, .func = handler_drm_KAE },
+ { .id = WIIPROTO_REQ_DRM_KIE, .size = 21, .func = handler_drm_KIE },
+ { .id = WIIPROTO_REQ_DRM_KAIE, .size = 21, .func = handler_drm_KAIE },
+ { .id = WIIPROTO_REQ_DRM_E, .size = 21, .func = handler_drm_E },
+ { .id = WIIPROTO_REQ_DRM_SKAI1, .size = 21, .func = handler_drm_SKAI1 },
+ { .id = WIIPROTO_REQ_DRM_SKAI2, .size = 21, .func = handler_drm_SKAI2 },
+ { .id = 0 }
+};
+
+static int wiimote_hid_event(struct hid_device *hdev, struct hid_report *report,
+ u8 *raw_data, int size)
+{
+ struct wiimote_data *wdata = hid_get_drvdata(hdev);
+ struct wiiproto_handler *h;
+ int i;
+ unsigned long flags;
+ bool handled = false;
+
+ if (size < 1)
+ return -EINVAL;
+
+ spin_lock_irqsave(&wdata->state.lock, flags);
+
+ for (i = 0; handlers[i].id; ++i) {
+ h = &handlers[i];
+ if (h->id == raw_data[0] && h->size < size) {
+ h->func(wdata, &raw_data[1]);
+ handled = true;
+ }
+ }
+
+ if (!handled)
+ hid_warn(hdev, "Unhandled report %hhu size %d\n", raw_data[0],
+ size);
+
+ spin_unlock_irqrestore(&wdata->state.lock, flags);
+
+ return 0;
+}
+
+static void wiimote_leds_destroy(struct wiimote_data *wdata)
+{
+ int i;
+ struct led_classdev *led;
+
+ for (i = 0; i < 4; ++i) {
+ if (wdata->leds[i]) {
+ led = wdata->leds[i];
+ wdata->leds[i] = NULL;
+ led_classdev_unregister(led);
+ kfree(led);
+ }
+ }
+}
+
+static int wiimote_leds_create(struct wiimote_data *wdata)
+{
+ int i, ret;
+ struct device *dev = &wdata->hdev->dev;
+ size_t namesz = strlen(dev_name(dev)) + 9;
+ struct led_classdev *led;
+ char *name;
+
+ for (i = 0; i < 4; ++i) {
+ led = kzalloc(sizeof(struct led_classdev) + namesz, GFP_KERNEL);
+ if (!led) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ name = (void*)&led[1];
+ snprintf(name, namesz, "%s:blue:p%d", dev_name(dev), i);
+ led->name = name;
+ led->brightness = 0;
+ led->max_brightness = 1;
+ led->brightness_get = wiimote_leds_get;
+ led->brightness_set = wiimote_leds_set;
+
+ ret = led_classdev_register(dev, led);
+ if (ret) {
+ kfree(led);
+ goto err;
+ }
+ wdata->leds[i] = led;
+ }
+
+ return 0;
+
+err:
+ wiimote_leds_destroy(wdata);
+ return ret;
+}
+
+static struct wiimote_data *wiimote_create(struct hid_device *hdev)
+{
+ struct wiimote_data *wdata;
+ int i;
+
+ wdata = kzalloc(sizeof(*wdata), GFP_KERNEL);
+ if (!wdata)
+ return NULL;
+
+ wdata->input = input_allocate_device();
+ if (!wdata->input)
+ goto err;
+
+ wdata->hdev = hdev;
+ hid_set_drvdata(hdev, wdata);
+
+ input_set_drvdata(wdata->input, wdata);
+ wdata->input->open = wiimote_input_open;
+ wdata->input->close = wiimote_input_close;
+ wdata->input->dev.parent = &wdata->hdev->dev;
+ wdata->input->id.bustype = wdata->hdev->bus;
+ wdata->input->id.vendor = wdata->hdev->vendor;
+ wdata->input->id.product = wdata->hdev->product;
+ wdata->input->id.version = wdata->hdev->version;
+ wdata->input->name = WIIMOTE_NAME;
+
+ set_bit(EV_KEY, wdata->input->evbit);
+ for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
+ set_bit(wiiproto_keymap[i], wdata->input->keybit);
+
+ set_bit(FF_RUMBLE, wdata->input->ffbit);
+ if (input_ff_create_memless(wdata->input, NULL, wiimote_ff_play))
+ goto err_input;
+
+ wdata->accel = input_allocate_device();
+ if (!wdata->accel)
+ goto err_input;
+
+ input_set_drvdata(wdata->accel, wdata);
+ wdata->accel->open = wiimote_accel_open;
+ wdata->accel->close = wiimote_accel_close;
+ wdata->accel->dev.parent = &wdata->hdev->dev;
+ wdata->accel->id.bustype = wdata->hdev->bus;
+ wdata->accel->id.vendor = wdata->hdev->vendor;
+ wdata->accel->id.product = wdata->hdev->product;
+ wdata->accel->id.version = wdata->hdev->version;
+ wdata->accel->name = WIIMOTE_NAME " Accelerometer";
+
+ set_bit(EV_ABS, wdata->accel->evbit);
+ set_bit(ABS_RX, wdata->accel->absbit);
+ set_bit(ABS_RY, wdata->accel->absbit);
+ set_bit(ABS_RZ, wdata->accel->absbit);
+ input_set_abs_params(wdata->accel, ABS_RX, -500, 500, 2, 4);
+ input_set_abs_params(wdata->accel, ABS_RY, -500, 500, 2, 4);
+ input_set_abs_params(wdata->accel, ABS_RZ, -500, 500, 2, 4);
+
+ wdata->ir = input_allocate_device();
+ if (!wdata->ir)
+ goto err_ir;
+
+ input_set_drvdata(wdata->ir, wdata);
+ wdata->ir->open = wiimote_ir_open;
+ wdata->ir->close = wiimote_ir_close;
+ wdata->ir->dev.parent = &wdata->hdev->dev;
+ wdata->ir->id.bustype = wdata->hdev->bus;
+ wdata->ir->id.vendor = wdata->hdev->vendor;
+ wdata->ir->id.product = wdata->hdev->product;
+ wdata->ir->id.version = wdata->hdev->version;
+ wdata->ir->name = WIIMOTE_NAME " IR";
+
+ set_bit(EV_ABS, wdata->ir->evbit);
+ set_bit(ABS_HAT0X, wdata->ir->absbit);
+ set_bit(ABS_HAT0Y, wdata->ir->absbit);
+ set_bit(ABS_HAT1X, wdata->ir->absbit);
+ set_bit(ABS_HAT1Y, wdata->ir->absbit);
+ set_bit(ABS_HAT2X, wdata->ir->absbit);
+ set_bit(ABS_HAT2Y, wdata->ir->absbit);
+ set_bit(ABS_HAT3X, wdata->ir->absbit);
+ set_bit(ABS_HAT3Y, wdata->ir->absbit);
+ input_set_abs_params(wdata->ir, ABS_HAT0X, 0, 1023, 2, 4);
+ input_set_abs_params(wdata->ir, ABS_HAT0Y, 0, 767, 2, 4);
+ input_set_abs_params(wdata->ir, ABS_HAT1X, 0, 1023, 2, 4);
+ input_set_abs_params(wdata->ir, ABS_HAT1Y, 0, 767, 2, 4);
+ input_set_abs_params(wdata->ir, ABS_HAT2X, 0, 1023, 2, 4);
+ input_set_abs_params(wdata->ir, ABS_HAT2Y, 0, 767, 2, 4);
+ input_set_abs_params(wdata->ir, ABS_HAT3X, 0, 1023, 2, 4);
+ input_set_abs_params(wdata->ir, ABS_HAT3Y, 0, 767, 2, 4);
+
+ spin_lock_init(&wdata->qlock);
+ INIT_WORK(&wdata->worker, wiimote_worker);
+
+ spin_lock_init(&wdata->state.lock);
+ init_completion(&wdata->state.ready);
+ mutex_init(&wdata->state.sync);
+ wdata->state.drm = WIIPROTO_REQ_DRM_K;
+
+ return wdata;
+
+err_ir:
+ input_free_device(wdata->accel);
+err_input:
+ input_free_device(wdata->input);
+err:
+ kfree(wdata);
+ return NULL;
+}
+
+static void wiimote_destroy(struct wiimote_data *wdata)
+{
+ wiidebug_deinit(wdata);
+ wiiext_deinit(wdata);
+ wiimote_leds_destroy(wdata);
+
+ power_supply_unregister(&wdata->battery);
+ input_unregister_device(wdata->accel);
+ input_unregister_device(wdata->ir);
+ input_unregister_device(wdata->input);
+ cancel_work_sync(&wdata->worker);
+ hid_hw_stop(wdata->hdev);
+
+ kfree(wdata);
+}
+
+static int wiimote_hid_probe(struct hid_device *hdev,
+ const struct hid_device_id *id)
+{
+ struct wiimote_data *wdata;
+ int ret;
+
+ hdev->quirks |= HID_QUIRK_NO_INIT_REPORTS;
+
+ wdata = wiimote_create(hdev);
+ if (!wdata) {
+ hid_err(hdev, "Can't alloc device\n");
+ return -ENOMEM;
+ }
+
+ ret = hid_parse(hdev);
+ if (ret) {
+ hid_err(hdev, "HID parse failed\n");
+ goto err;
+ }
+
+ ret = hid_hw_start(hdev, HID_CONNECT_HIDRAW);
+ if (ret) {
+ hid_err(hdev, "HW start failed\n");
+ goto err;
+ }
+
+ ret = input_register_device(wdata->accel);
+ if (ret) {
+ hid_err(hdev, "Cannot register input device\n");
+ goto err_stop;
+ }
+
+ ret = input_register_device(wdata->ir);
+ if (ret) {
+ hid_err(hdev, "Cannot register input device\n");
+ goto err_ir;
+ }
+
+ ret = input_register_device(wdata->input);
+ if (ret) {
+ hid_err(hdev, "Cannot register input device\n");
+ goto err_input;
+ }
+
+ wdata->battery.properties = wiimote_battery_props;
+ wdata->battery.num_properties = ARRAY_SIZE(wiimote_battery_props);
+ wdata->battery.get_property = wiimote_battery_get_property;
+ wdata->battery.name = "wiimote_battery";
+ wdata->battery.type = POWER_SUPPLY_TYPE_BATTERY;
+ wdata->battery.use_for_apm = 0;
+
++ power_supply_powers(&wdata->battery, &hdev->dev);
++
+ ret = power_supply_register(&wdata->hdev->dev, &wdata->battery);
+ if (ret) {
+ hid_err(hdev, "Cannot register battery device\n");
+ goto err_battery;
+ }
+
+ ret = wiimote_leds_create(wdata);
+ if (ret)
+ goto err_free;
+
+ ret = wiiext_init(wdata);
+ if (ret)
+ goto err_free;
+
+ ret = wiidebug_init(wdata);
+ if (ret)
+ goto err_free;
+
+ hid_info(hdev, "New device registered\n");
+
+ /* by default set led1 after device initialization */
+ spin_lock_irq(&wdata->state.lock);
+ wiiproto_req_leds(wdata, WIIPROTO_FLAG_LED1);
+ spin_unlock_irq(&wdata->state.lock);
+
+ return 0;
+
+err_free:
+ wiimote_destroy(wdata);
+ return ret;
+
+err_battery:
+ input_unregister_device(wdata->input);
+ wdata->input = NULL;
+err_input:
+ input_unregister_device(wdata->ir);
+ wdata->ir = NULL;
+err_ir:
+ input_unregister_device(wdata->accel);
+ wdata->accel = NULL;
+err_stop:
+ hid_hw_stop(hdev);
+err:
+ input_free_device(wdata->ir);
+ input_free_device(wdata->accel);
+ input_free_device(wdata->input);
+ kfree(wdata);
+ return ret;
+}
+
+static void wiimote_hid_remove(struct hid_device *hdev)
+{
+ struct wiimote_data *wdata = hid_get_drvdata(hdev);
+
+ hid_info(hdev, "Device removed\n");
+ wiimote_destroy(wdata);
+}
+
+static const struct hid_device_id wiimote_hid_devices[] = {
+ { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO,
+ USB_DEVICE_ID_NINTENDO_WIIMOTE) },
+ { }
+};
+MODULE_DEVICE_TABLE(hid, wiimote_hid_devices);
+
+static struct hid_driver wiimote_hid_driver = {
+ .name = "wiimote",
+ .id_table = wiimote_hid_devices,
+ .probe = wiimote_hid_probe,
+ .remove = wiimote_hid_remove,
+ .raw_event = wiimote_hid_event,
+};
+
+static int __init wiimote_init(void)
+{
+ int ret;
+
+ ret = hid_register_driver(&wiimote_hid_driver);
+ if (ret)
+ pr_err("Can't register wiimote hid driver\n");
+
+ return ret;
+}
+
+static void __exit wiimote_exit(void)
+{
+ hid_unregister_driver(&wiimote_hid_driver);
+}
+
+module_init(wiimote_init);
+module_exit(wiimote_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Herrmann <dh.herrmann@gmail.com>");
+MODULE_DESCRIPTION(WIIMOTE_NAME " Device Driver");
projects / cascardo / linux.git / commitdiff