* any later version.
*/
-#include <linux/atomic.h>
#include <linux/device.h>
#include <linux/hid.h>
#include <linux/input.h>
+#include <linux/leds.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include "hid-ids.h"
};
struct wiimote_data {
- atomic_t ready;
struct hid_device *hdev;
struct input_dev *input;
+ struct led_classdev *leds[4];
spinlock_t qlock;
__u8 head;
#define WIIPROTO_FLAGS_LEDS (WIIPROTO_FLAG_LED1 | WIIPROTO_FLAG_LED2 | \
WIIPROTO_FLAG_LED3 | WIIPROTO_FLAG_LED4)
+/* return flag for led \num */
+#define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1))
+
enum wiiproto_reqs {
+ WIIPROTO_REQ_NULL = 0x0,
WIIPROTO_REQ_LED = 0x11,
+ WIIPROTO_REQ_DRM = 0x12,
+ WIIPROTO_REQ_STATUS = 0x20,
+ WIIPROTO_REQ_RETURN = 0x22,
WIIPROTO_REQ_DRM_K = 0x30,
};
BTN_MODE, /* WIIPROTO_KEY_HOME */
};
-#define dev_to_wii(pdev) hid_get_drvdata(container_of(pdev, struct hid_device, \
- dev))
-
static ssize_t wiimote_hid_send(struct hid_device *hdev, __u8 *buffer,
size_t count)
{
wiimote_queue(wdata, cmd, sizeof(cmd));
}
-#define wiifs_led_show_set(num) \
-static ssize_t wiifs_led_show_##num(struct device *dev, \
- struct device_attribute *attr, char *buf) \
-{ \
- struct wiimote_data *wdata = dev_to_wii(dev); \
- unsigned long flags; \
- int state; \
- \
- if (!atomic_read(&wdata->ready)) \
- return -EBUSY; \
- \
- spin_lock_irqsave(&wdata->state.lock, flags); \
- state = !!(wdata->state.flags & WIIPROTO_FLAG_LED##num); \
- spin_unlock_irqrestore(&wdata->state.lock, flags); \
- \
- return sprintf(buf, "%d\n", state); \
-} \
-static ssize_t wiifs_led_set_##num(struct device *dev, \
- struct device_attribute *attr, const char *buf, size_t count) \
-{ \
- struct wiimote_data *wdata = dev_to_wii(dev); \
- int tmp = simple_strtoul(buf, NULL, 10); \
- unsigned long flags; \
- __u8 state; \
- \
- if (!atomic_read(&wdata->ready)) \
- return -EBUSY; \
- \
- spin_lock_irqsave(&wdata->state.lock, flags); \
- \
- state = wdata->state.flags; \
- \
- if (tmp) \
- wiiproto_req_leds(wdata, state | WIIPROTO_FLAG_LED##num);\
- else \
- wiiproto_req_leds(wdata, state & ~WIIPROTO_FLAG_LED##num);\
- \
- spin_unlock_irqrestore(&wdata->state.lock, flags); \
- \
- return count; \
-} \
-static DEVICE_ATTR(led##num, S_IRUGO | S_IWUSR, wiifs_led_show_##num, \
- wiifs_led_set_##num)
-
-wiifs_led_show_set(1);
-wiifs_led_show_set(2);
-wiifs_led_show_set(3);
-wiifs_led_show_set(4);
+/*
+ * 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)
+{
+ return WIIPROTO_REQ_DRM_K;
+}
+
+static 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;
+
+ wiimote_queue(wdata, cmd, sizeof(cmd));
+}
+
+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_input_event(struct input_dev *dev, unsigned int type,
unsigned int code, int value)
+{
+ return 0;
+}
+
+static int wiimote_input_open(struct input_dev *dev)
{
struct wiimote_data *wdata = input_get_drvdata(dev);
- if (!atomic_read(&wdata->ready))
- return -EBUSY;
- /* smp_rmb: Make sure wdata->xy is available when wdata->ready is 1 */
- smp_rmb();
+ return hid_hw_open(wdata->hdev);
+}
- return 0;
+static void wiimote_input_close(struct input_dev *dev)
+{
+ struct wiimote_data *wdata = input_get_drvdata(dev);
+
+ hid_hw_close(wdata->hdev);
}
static void handler_keys(struct wiimote_data *wdata, const __u8 *payload)
input_sync(wdata->input);
}
+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);
+}
+
+static void handler_return(struct wiimote_data *wdata, const __u8 *payload)
+{
+ __u8 err = payload[3];
+ __u8 cmd = payload[2];
+
+ handler_keys(wdata, payload);
+
+ if (err)
+ hid_warn(wdata->hdev, "Remote error %hhu on req %hhu\n", err,
+ cmd);
+}
+
struct wiiproto_handler {
__u8 id;
size_t size;
};
static struct wiiproto_handler handlers[] = {
+ { .id = WIIPROTO_REQ_STATUS, .size = 6, .func = handler_status },
+ { .id = WIIPROTO_REQ_RETURN, .size = 4, .func = handler_return },
{ .id = WIIPROTO_REQ_DRM_K, .size = 2, .func = handler_keys },
{ .id = 0 }
};
int i;
unsigned long flags;
- if (!atomic_read(&wdata->ready))
- return -EBUSY;
- /* smp_rmb: Make sure wdata->xy is available when wdata->ready is 1 */
- smp_rmb();
-
if (size < 1)
return -EINVAL;
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;
input_set_drvdata(wdata->input, wdata);
wdata->input->event = wiimote_input_event;
+ 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;
static void wiimote_destroy(struct wiimote_data *wdata)
{
+ wiimote_leds_destroy(wdata);
+
+ input_unregister_device(wdata->input);
+ cancel_work_sync(&wdata->worker);
+ hid_hw_stop(wdata->hdev);
+
kfree(wdata);
}
return -ENOMEM;
}
- ret = device_create_file(&hdev->dev, &dev_attr_led1);
- if (ret)
- goto err;
- ret = device_create_file(&hdev->dev, &dev_attr_led2);
- if (ret)
- goto err;
- ret = device_create_file(&hdev->dev, &dev_attr_led3);
- if (ret)
- goto err;
- ret = device_create_file(&hdev->dev, &dev_attr_led4);
- if (ret)
- goto err;
-
ret = hid_parse(hdev);
if (ret) {
hid_err(hdev, "HID parse failed\n");
goto err_stop;
}
- /* smp_wmb: Write wdata->xy first before wdata->ready is set to 1 */
- smp_wmb();
- atomic_set(&wdata->ready, 1);
+ ret = wiimote_leds_create(wdata);
+ if (ret)
+ goto err_free;
+
hid_info(hdev, "New device registered\n");
/* by default set led1 after device initialization */
return 0;
+err_free:
+ wiimote_destroy(wdata);
+ return ret;
+
err_stop:
hid_hw_stop(hdev);
err:
input_free_device(wdata->input);
- device_remove_file(&hdev->dev, &dev_attr_led1);
- device_remove_file(&hdev->dev, &dev_attr_led2);
- device_remove_file(&hdev->dev, &dev_attr_led3);
- device_remove_file(&hdev->dev, &dev_attr_led4);
- wiimote_destroy(wdata);
+ kfree(wdata);
return ret;
}
struct wiimote_data *wdata = hid_get_drvdata(hdev);
hid_info(hdev, "Device removed\n");
-
- device_remove_file(&hdev->dev, &dev_attr_led1);
- device_remove_file(&hdev->dev, &dev_attr_led2);
- device_remove_file(&hdev->dev, &dev_attr_led3);
- device_remove_file(&hdev->dev, &dev_attr_led4);
-
- hid_hw_stop(hdev);
- input_unregister_device(wdata->input);
-
- cancel_work_sync(&wdata->worker);
wiimote_destroy(wdata);
}
git.openpandora.org / pandora-kernel.git / commitdiff