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HID: wiimote: convert KEYS and RUMBLE to modules

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This introduces the first sub-device modules by converting the KEYS and
RUMBLE sub-devices into wiimote modules. Both must be converted at once
because they depend on the built-in shared input device.

This mostly moves code from wiimote-core to wiimote-modules and doesn't
change any semantics or ABI.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
David Herrmann 2013-05-05 23:12:52 +02:00 committed by Jiri Kosina
parent 27f0694214
commit 20cef813b4
3 changed files with 172 additions and 114 deletions
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134
drivers/hid/hid-wiimote-core.c
View File

@ -22,35 +22,6 @@
#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,
@ -166,7 +137,7 @@ static inline void wiiproto_keep_rumble(struct wiimote_data *wdata, __u8 *cmd1)
*cmd1 |= 0x01;
}
static void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble)
{
__u8 cmd[2];
@ -654,31 +625,6 @@ static void wiimote_leds_set(struct led_classdev *led_dev,
}
}
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_accel_open(struct input_dev *dev)
{
struct wiimote_data *wdata = input_get_drvdata(dev);
@ -725,12 +671,18 @@ static const __u8 * const wiimote_devtype_mods[WIIMOTE_DEV_NUM] = {
WIIMOD_NULL,
},
[WIIMOTE_DEV_GENERIC] = (const __u8[]){
WIIMOD_KEYS,
WIIMOD_RUMBLE,
WIIMOD_NULL,
},
[WIIMOTE_DEV_GEN10] = (const __u8[]){
WIIMOD_KEYS,
WIIMOD_RUMBLE,
WIIMOD_NULL,
},
[WIIMOTE_DEV_GEN20] = (const __u8[]){
WIIMOD_KEYS,
WIIMOD_RUMBLE,
WIIMOD_NULL,
},
};
@ -933,29 +885,17 @@ static void wiimote_init_worker(struct work_struct *work)
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);
const __u8 *iter, *mods;
const struct wiimod_ops *ops;
mods = wiimote_devtype_mods[wdata->state.devtype];
for (iter = mods; *iter != WIIMOD_NULL; ++iter) {
ops = wiimod_table[*iter];
if (ops->in_keys) {
ops->in_keys(wdata, payload);
break;
}
}
}
static void handler_accel(struct wiimote_data *wdata, const __u8 *payload)
@ -1319,38 +1259,17 @@ err:
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->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;
goto err;
input_set_drvdata(wdata->accel, wdata);
wdata->accel->open = wiimote_accel_open;
@ -1417,8 +1336,6 @@ static struct wiimote_data *wiimote_create(struct hid_device *hdev)
err_ir:
input_free_device(wdata->accel);
err_input:
input_free_device(wdata->input);
err:
kfree(wdata);
return NULL;
@ -1430,13 +1347,12 @@ static void wiimote_destroy(struct wiimote_data *wdata)
wiiext_deinit(wdata);
wiimote_leds_destroy(wdata);
cancel_work_sync(&wdata->init_worker);
wiimote_modules_unload(wdata);
power_supply_unregister(&wdata->battery);
kfree(wdata->battery.name);
input_unregister_device(wdata->accel);
input_unregister_device(wdata->ir);
input_unregister_device(wdata->input);
cancel_work_sync(&wdata->init_worker);
cancel_work_sync(&wdata->queue.worker);
hid_hw_close(wdata->hdev);
hid_hw_stop(wdata->hdev);
@ -1488,12 +1404,6 @@ static int wiimote_hid_probe(struct hid_device *hdev,
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;
@ -1545,9 +1455,6 @@ err_free:
err_battery:
kfree(wdata->battery.name);
err_battery_name:
input_unregister_device(wdata->input);
wdata->input = NULL;
err_input:
input_unregister_device(wdata->ir);
wdata->ir = NULL;
err_ir:
@ -1560,7 +1467,6 @@ err_stop:
err:
input_free_device(wdata->ir);
input_free_device(wdata->accel);
input_free_device(wdata->input);
kfree(wdata);
return ret;
}

134
drivers/hid/hid-wiimote-modules.c
View File

@ -39,7 +39,141 @@
#include <linux/spinlock.h>
#include "hid-wiimote.h"
/*
* Keys
* The initial Wii Remote provided a bunch of buttons that are reported as
* part of the core protocol. Many later devices dropped these and report
* invalid data in the core button reports. Load this only on devices which
* correctly send button reports.
* It uses the shared input device.
*/
static const __u16 wiimod_keys_map[] = {
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 void wiimod_keys_in_keys(struct wiimote_data *wdata, const __u8 *keys)
{
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_LEFT],
!!(keys[0] & 0x01));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_RIGHT],
!!(keys[0] & 0x02));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_DOWN],
!!(keys[0] & 0x04));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_UP],
!!(keys[0] & 0x08));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_PLUS],
!!(keys[0] & 0x10));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_TWO],
!!(keys[1] & 0x01));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_ONE],
!!(keys[1] & 0x02));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_B],
!!(keys[1] & 0x04));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_A],
!!(keys[1] & 0x08));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_MINUS],
!!(keys[1] & 0x10));
input_report_key(wdata->input, wiimod_keys_map[WIIPROTO_KEY_HOME],
!!(keys[1] & 0x80));
input_sync(wdata->input);
}
static int wiimod_keys_probe(const struct wiimod_ops *ops,
struct wiimote_data *wdata)
{
unsigned int i;
set_bit(EV_KEY, wdata->input->evbit);
for (i = 0; i < WIIPROTO_KEY_COUNT; ++i)
set_bit(wiimod_keys_map[i], wdata->input->keybit);
return 0;
}
static const struct wiimod_ops wiimod_keys = {
.flags = WIIMOD_FLAG_INPUT,
.arg = 0,
.probe = wiimod_keys_probe,
.remove = NULL,
.in_keys = wiimod_keys_in_keys,
};
/*
* Rumble
* Nearly all devices provide a rumble feature. A small motor for
* force-feedback effects. We provide an FF_RUMBLE memless ff device on the
* shared input device if this module is loaded.
* The rumble motor is controlled via a flag on almost every output report so
* the wiimote core handles the rumble flag. But if a device doesn't provide
* the rumble motor, this flag shouldn't be set.
*/
static int wiimod_rumble_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 wiimod_rumble_probe(const struct wiimod_ops *ops,
struct wiimote_data *wdata)
{
set_bit(FF_RUMBLE, wdata->input->ffbit);
if (input_ff_create_memless(wdata->input, NULL, wiimod_rumble_play))
return -ENOMEM;
return 0;
}
static void wiimod_rumble_remove(const struct wiimod_ops *ops,
struct wiimote_data *wdata)
{
unsigned long flags;
spin_lock_irqsave(&wdata->state.lock, flags);
wiiproto_req_rumble(wdata, 0);
spin_unlock_irqrestore(&wdata->state.lock, flags);
}
static const struct wiimod_ops wiimod_rumble = {
.flags = WIIMOD_FLAG_INPUT,
.arg = 0,
.probe = wiimod_rumble_probe,
.remove = wiimod_rumble_remove,
};
/* module table */
const struct wiimod_ops *wiimod_table[WIIMOD_NUM] = {
[WIIMOD_KEYS] = &wiimod_keys,
[WIIMOD_RUMBLE] = &wiimod_rumble,
};

18
drivers/hid/hid-wiimote.h
View File

@ -45,6 +45,21 @@
/* return flag for led \num */
#define WIIPROTO_FLAG_LED(num) (WIIPROTO_FLAG_LED1 << (num - 1))
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
};
enum wiimote_devtype {
WIIMOTE_DEV_PENDING,
WIIMOTE_DEV_UNKNOWN,
@ -111,6 +126,8 @@ struct wiimote_data {
/* wiimote modules */
enum wiimod_module {
WIIMOD_KEYS,
WIIMOD_RUMBLE,
WIIMOD_NUM,
WIIMOD_NULL = WIIMOD_NUM,
};
@ -166,6 +183,7 @@ enum wiiproto_reqs {
dev))
extern void wiiproto_req_drm(struct wiimote_data *wdata, __u8 drm);
extern void wiiproto_req_rumble(struct wiimote_data *wdata, __u8 rumble);
extern int wiimote_cmd_write(struct wiimote_data *wdata, __u32 offset,
const __u8 *wmem, __u8 size);
extern ssize_t wiimote_cmd_read(struct wiimote_data *wdata, __u32 offset,