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hid-tmt300rs.c
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hid-tmt300rs.c
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#include "hid-tmt300rs.h"
static void t300rs_int_callback(struct urb *urb){
if(urb->status){
hid_warn(urb->dev, "urb status %i received\n", urb->status);
}
usb_free_urb(urb);
}
static struct t300rs_device_entry *t300rs_get_device(struct hid_device *hdev){
struct t300rs_data *drv_data;
struct t300rs_device_entry *t300rs;
spin_lock_irqsave(&lock, lock_flags);
drv_data = hid_get_drvdata(hdev);
if(!drv_data){
hid_err(hdev, "private data not found\n");
return NULL;
}
t300rs = drv_data->device_props;
if(!t300rs){
hid_err(hdev, "device properties not found\n");
return NULL;
}
spin_unlock_irqrestore(&lock, lock_flags);
return t300rs;
}
static int t300rs_send_int(struct input_dev *dev, u8 *send_buffer, int *trans){
struct hid_device *hdev = input_get_drvdata(dev);
struct t300rs_device_entry *t300rs;
struct usb_device *usbdev;
struct usb_interface *usbif;
struct usb_host_endpoint *ep;
struct urb *urb = usb_alloc_urb(0, GFP_ATOMIC);
t300rs = t300rs_get_device(hdev);
if(!t300rs){
hid_err(hdev, "could not get device\n");
}
usbdev = t300rs->usbdev;
usbif = t300rs->usbif;
ep = &usbif->cur_altsetting->endpoint[1];
usb_fill_int_urb(
urb,
usbdev,
usb_sndintpipe(usbdev, 1),
send_buffer,
T300RS_BUFFER_LENGTH,
t300rs_int_callback,
hdev,
ep->desc.bInterval
);
return usb_submit_urb(urb, GFP_ATOMIC);
}
static int t300rs_play_effect(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
u8 *send_buffer = kzalloc(T300RS_BUFFER_LENGTH, GFP_ATOMIC);
int ret, trans;
send_buffer[0] = 0x60;
send_buffer[2] = state->effect.id + 1;
send_buffer[3] = 0x89;
send_buffer[4] = 0x01;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed starting effect play\n");
}
kfree(send_buffer);
return ret;
}
static int t300rs_stop_effect(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
u8 *send_buffer = kzalloc(T300RS_BUFFER_LENGTH, GFP_ATOMIC);
int ret, trans;
send_buffer[0] = 0x60;
send_buffer[2] = state->effect.id + 1;
send_buffer[3] = 0x89;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed stopping effect play\n");
}
kfree(send_buffer);
return ret;
}
static void t300rs_fill_envelope(u8 *send_buffer, int i, s16 level, u16 duration, struct ff_envelope *envelope){
u16 le_attack_level, le_attack_length, le_fade_level, le_fade_length;
u16 attack_length = (duration * envelope->attack_length) / 0x7fff;
u16 attack_level = (level * envelope->attack_level) / 0x7fff;
u16 fade_length = (duration * envelope->fade_length) / 0x7fff;
u16 fade_level = (level * envelope->fade_level) / 0x7fff;
le_attack_length = cpu_to_le16(attack_length);
le_attack_level = cpu_to_le16(attack_level);
le_fade_length = cpu_to_le16(fade_length);
le_fade_level = cpu_to_le16(fade_level);
send_buffer[i ] = le_attack_length & 0xff;
send_buffer[i + 1] = le_attack_length >> 8;
send_buffer[i + 2] = le_attack_level & 0xff;
send_buffer[i + 3] = le_attack_level >> 8;
send_buffer[i + 4] = le_fade_length & 0xff;
send_buffer[i + 5] = le_fade_length >> 8;
send_buffer[i + 6] = le_fade_level & 0xff;
send_buffer[i + 7] = le_fade_level >> 8;
}
static int t300rs_modify_envelope(struct t300rs_device_entry *t300rs,
struct t300rs_effect_state *state,
u8 *send_buffer,
s16 level,
u16 duration,
u8 id,
struct ff_envelope envelope,
struct ff_envelope envelope_old
){
u16 attack_length, attack_level, fade_length, fade_level;
u16 le_attack_length, le_attack_level, le_fade_length, le_fade_level;
int ret = 0, trans;
if(duration == 0){
duration = 0xffff;
}
attack_length = (duration * envelope.attack_length) / 0x7fff;
attack_level = (level * envelope.attack_level) / 0x7fff;
fade_length = (duration * envelope.fade_length) / 0x7fff;
fade_level = (level * envelope.fade_level) / 0x7fff;
le_attack_length = cpu_to_le16(attack_length);
le_attack_level = cpu_to_le16(attack_level);
le_fade_length = cpu_to_le16(fade_length);
le_fade_level = cpu_to_le16(fade_level);
send_buffer[0] = 0x60;
send_buffer[2] = id + 1;
send_buffer[3] = 0x31;
if(envelope.attack_length != envelope_old.attack_length){
send_buffer[4] = 0x81;
send_buffer[5] = le_attack_length & 0xff;
send_buffer[6] = le_attack_length >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying effect envelope\n");
goto error;
}
}
if(envelope.attack_level != envelope_old.attack_level){
send_buffer[4] = 0x82;
send_buffer[5] = le_attack_level & 0xff;
send_buffer[6] = le_attack_level >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying effect envelope\n");
goto error;
}
}
if(envelope.fade_length != envelope_old.fade_length){
send_buffer[4] = 0x84;
send_buffer[5] = le_fade_length & 0xff;
send_buffer[6] = le_fade_length >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying effect envelope\n");
goto error;
}
}
if(envelope.fade_level != envelope_old.fade_level){
send_buffer[4] = 0x88;
send_buffer[5] = le_fade_level & 0xff;
send_buffer[6] = le_fade_level >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying effect envelope\n");
goto error;
}
}
error:
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
return ret;
}
static int t300rs_modify_duration(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state, u8 *send_buffer){
struct ff_effect effect = state->effect;
struct ff_effect old = state->old;
u16 duration, le_duration;
int ret = 0, trans;
if(effect.replay.length == 0){
duration = 0xffff;
} else {
duration = effect.replay.length;
}
le_duration = cpu_to_le16(duration);
if(effect.replay.length != old.replay.length){
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x49;
send_buffer[5] = 0x41;
send_buffer[6] = le_duration & 0xff;
send_buffer[7] = le_duration >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying duration\n");
goto error;
}
}
error:
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
return ret;
}
static int t300rs_modify_constant(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state, u8 *send_buffer){
struct ff_effect effect = state->effect;
struct ff_effect old = state->old;
struct ff_constant_effect constant = effect.u.constant;
struct ff_constant_effect constant_old = old.u.constant;
int ret, trans;
s16 level, le_level;
level = (constant.level * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
le_level = cpu_to_le16(level);
if(constant.level != constant_old.level){
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0a;
send_buffer[4] = le_level & 0xff;
send_buffer[5] = le_level >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying constant effect\n");
goto error;
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
ret = t300rs_modify_envelope(t300rs,
state,
send_buffer,
level,
effect.replay.length,
effect.id,
constant.envelope,
constant_old.envelope
);
if(ret){
hid_err(t300rs->hdev, "failed modifying constant envelope\n");
goto error;
}
ret = t300rs_modify_duration(t300rs, state, send_buffer);
if(ret){
hid_err(t300rs->hdev, "failed modifying constant duration\n");
goto error;
}
error:
kfree(send_buffer);
return ret;
}
static int t300rs_modify_ramp(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state, u8 *send_buffer){
struct ff_effect effect = state->effect;
struct ff_effect old = state->old;
struct ff_ramp_effect ramp = effect.u.ramp;
struct ff_ramp_effect ramp_old = old.u.ramp;
int ret, trans;
u16 difference, le_difference, top, bottom;
s16 level, le_level;
top = ramp.end_level > ramp.start_level ? ramp.end_level : ramp.start_level;
bottom = ramp.end_level > ramp.start_level ? ramp.start_level : ramp.end_level;
difference = ((top - bottom) * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
le_difference = cpu_to_le16(difference);
level = (top * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
le_level = cpu_to_le16(level);
if(ramp.start_level != ramp_old.start_level || ramp.end_level != ramp_old.end_level){
send_buffer[0] = 0x60;
send_buffer[1] = effect.id + 1;
send_buffer[2] = 0x0e;
send_buffer[3] = 0x03;
send_buffer[4] = le_difference & 0xff;
send_buffer[5] = le_difference >> 8;
send_buffer[6] = le_level & 0xff;
send_buffer[7] = le_level >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying ramp effect\n");
goto error;
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
ret = t300rs_modify_envelope(t300rs,
state,
send_buffer,
level,
effect.replay.length,
effect.id,
ramp.envelope,
ramp_old.envelope
);
if(ret){
hid_err(t300rs->hdev, "failed modifying ramp envelope\n");
goto error;
}
ret = t300rs_modify_duration(t300rs, state, send_buffer);
if(ret){
hid_err(t300rs->hdev, "failed modifying ramp duration\n");
goto error;
}
error:
kfree(send_buffer);
return ret;
}
static int t300rs_modify_damper(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state, u8 *send_buffer){
struct ff_effect effect = state->effect;
struct ff_effect old = state->old;
struct ff_condition_effect damper = effect.u.condition[0];
struct ff_condition_effect damper_old = old.u.condition[0];
int ret, trans;
if(damper.right_coeff != damper_old.right_coeff){
s16 le_coeff = cpu_to_le16(damper.right_coeff);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0e;
send_buffer[4] = 0x41;
send_buffer[5] = le_coeff & 0xff;
send_buffer[6] = le_coeff >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying damper rc\n");
goto error;
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
if(damper.left_coeff != damper_old.left_coeff){
s16 le_coeff = cpu_to_le16(damper.left_coeff);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0e;
send_buffer[4] = 0x42;
send_buffer[5] = le_coeff & 0xff;
send_buffer[6] = le_coeff >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying damper lc\n");
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
if((damper.deadband != damper_old.deadband) ||
(damper.center != damper_old.center)){
u16 le_deadband_right = cpu_to_le16(0xfffe - damper.deadband - damper.center);
u16 le_deadband_left = cpu_to_le16(0xfffe - damper.deadband + damper.center);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0e;
send_buffer[4] = 0x4c;
send_buffer[5] = le_deadband_right & 0xff;
send_buffer[6] = le_deadband_right >> 8;
send_buffer[7] = le_deadband_left & 0xff;
send_buffer[8] = le_deadband_left >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying damper deadband\n");
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
ret = t300rs_modify_duration(t300rs, state, send_buffer);
if(ret){
hid_err(t300rs->hdev, "failed modifying damper duration\n");
goto error;
}
error:
kfree(send_buffer);
return ret;
}
static int t300rs_modify_periodic(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state, u8 *send_buffer){
struct ff_effect effect = state->effect;
struct ff_effect old = state->old;
struct ff_periodic_effect periodic = effect.u.periodic;
struct ff_periodic_effect periodic_old = old.u.periodic;
int ret, trans;
s16 level, le_level;
level = (periodic.magnitude * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
le_level = cpu_to_le16(level);
if(periodic.magnitude != periodic_old.magnitude){
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0e;
send_buffer[4] = 0x01;
send_buffer[5] = le_level & 0xff;
send_buffer[6] = le_level >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying periodic magnitude\n");
goto error;
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
if(periodic.offset != periodic_old.offset){
s16 le_offset = cpu_to_le16(periodic.offset);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0e;
send_buffer[4] = 0x04;
send_buffer[5] = le_offset & 0xff;
send_buffer[6] = le_offset >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying periodic offset\n");
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
if(periodic.phase != periodic_old.phase){
s16 le_phase = cpu_to_le16(periodic.phase);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0e;
send_buffer[4] = 0x02;
send_buffer[5] = le_phase & 0xff;
send_buffer[6] = le_phase >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying periodic phase\n");
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
if(periodic.period != periodic_old.period){
s16 le_period = cpu_to_le16(periodic.period);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x0e;
send_buffer[4] = 0x08;
send_buffer[5] = le_period & 0xff;
send_buffer[6] = le_period >> 8;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed modifying periodic period\n");
}
memset(send_buffer, 0, T300RS_BUFFER_LENGTH);
}
ret = t300rs_modify_envelope(t300rs,
state,
send_buffer,
level,
effect.replay.length,
effect.id,
periodic.envelope,
periodic_old.envelope);
if(ret){
hid_err(t300rs->hdev, "failed modifying periodic envelope\n");
goto error;
}
ret = t300rs_modify_duration(t300rs, state, send_buffer);
if(ret){
hid_err(t300rs->hdev, "failed modifying periodic duration\n");
goto error;
}
error:
kfree(send_buffer);
return ret;
}
static int t300rs_upload_constant(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
u8 *send_buffer = kzalloc(T300RS_BUFFER_LENGTH, GFP_ATOMIC);
struct ff_effect effect = state->effect;
struct ff_constant_effect constant = state->effect.u.constant;
s16 level, le_level;
u16 duration, le_offset, le_duration;
int ret, trans;
/* some games, such as DiRT Rally 2 have a weird feeling to them, sort of
* like the wheel pulls just a bit to the right or left and then it just
* stops. I wouldn't be surprised if it's got something to do with the
* constant envelope, but right now I don't know. */
if(test_bit(FF_EFFECT_PLAYING, &state->flags) &&
test_bit(FF_EFFECT_QUEUE_UPDATE, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_UPLOAD, &state->flags);
return t300rs_modify_constant(t300rs, state, send_buffer);
}
level = (constant.level * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
if(effect.replay.length == 0){
duration = 0xffff;
} else {
duration = effect.replay.length;
}
le_level = cpu_to_le16(level);
le_offset = cpu_to_le16(effect.replay.delay);
le_duration = cpu_to_le16(duration);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x6a;
send_buffer[4] = le_level & 0xff;
send_buffer[5] = le_level >> 8;
t300rs_fill_envelope(send_buffer, 6, level,
duration, &constant.envelope);
send_buffer[15] = 0x4f;
send_buffer[16] = le_duration & 0xff;
send_buffer[17] = le_duration >> 8;
send_buffer[20] = le_offset & 0xff;
send_buffer[21] = le_offset >> 8;
send_buffer[23] = 0xff;
send_buffer[24] = 0xff;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed uploading constant effect\n");
}
kfree(send_buffer);
return ret;
}
static int t300rs_upload_ramp(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
u8 *send_buffer = kzalloc(T300RS_BUFFER_LENGTH, GFP_ATOMIC);
struct ff_effect effect = state->effect;
struct ff_ramp_effect ramp = state->effect.u.ramp;
int ret, trans;
u16 difference, le_difference, top, bottom, duration, le_duration, le_offset;
s16 level, le_level;
if(test_bit(FF_EFFECT_PLAYING, &state->flags) &&
test_bit(FF_EFFECT_QUEUE_UPDATE, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_UPLOAD, &state->flags);
return t300rs_modify_ramp(t300rs, state, send_buffer);
}
if(effect.replay.length == 0){
duration = 0xffff;
} else {
duration = effect.replay.length;
}
top = ramp.end_level > ramp.start_level ? ramp.end_level : ramp.start_level;
bottom = ramp.end_level > ramp.start_level ? ramp.start_level : ramp.end_level;
difference = ((top - bottom) * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
level = (top * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
le_difference = cpu_to_le16(difference);
le_level = cpu_to_le16(level);
le_duration = cpu_to_le16(duration);
le_offset = cpu_to_le16(effect.replay.delay);
send_buffer[0] = 0x60;
send_buffer[1] = effect.id + 1;
send_buffer[2] = 0x6b;
send_buffer[3] = le_difference & 0xff;
send_buffer[4] = le_difference >> 8;
send_buffer[5] = le_level & 0xff;
send_buffer[6] = le_level >> 8;
send_buffer[9] = le_duration & 0xff;
send_buffer[10] = le_duration >> 8;
send_buffer[12] = 0x80;
t300rs_fill_envelope(send_buffer, 14, level,
effect.replay.length, &ramp.envelope);
send_buffer[22] = ramp.end_level > ramp.start_level ? 0x04 : 0x05;
send_buffer[23] = 0x4f;
send_buffer[24] = le_duration & 0xff;
send_buffer[25] = le_duration >> 8;
send_buffer[28] = le_offset & 0xff;
send_buffer[29] = le_offset >> 8;
send_buffer[31] = 0xff;
send_buffer[32] = 0xff;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed uploading ramp");
}
if(test_bit(FF_EFFECT_PLAYING, &state->flags)){
t300rs_play_effect(t300rs, state);
}
kfree(send_buffer);
return ret;
}
static int t300rs_upload_spring(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
u8 *send_buffer = kzalloc(T300RS_BUFFER_LENGTH, GFP_ATOMIC);
struct ff_effect effect = state->effect;
/* we only care about the first axis */
struct ff_condition_effect spring = state->effect.u.condition[0];
int ret, trans;
u16 duration, le_right_coeff, le_left_coeff, le_deadband_right, le_deadband_left,
le_duration, le_offset;
if(test_bit(FF_EFFECT_PLAYING, &state->flags) &&
test_bit(FF_EFFECT_QUEUE_UPDATE, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_UPLOAD, &state->flags);
return t300rs_modify_damper(t300rs, state, send_buffer);
}
if(effect.replay.length == 0){
duration = 0xffff;
} else {
duration = effect.replay.length;
}
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x64;
le_right_coeff = cpu_to_le16(spring.right_coeff);
le_left_coeff = cpu_to_le16(spring.left_coeff);
le_deadband_right = cpu_to_le16(0xfffe - spring.deadband - spring.center);
le_deadband_left = cpu_to_le16(0xfffe - spring.deadband + spring.center);
le_duration = cpu_to_le16(duration);
le_offset = cpu_to_le16(effect.replay.delay);
send_buffer[4] = le_right_coeff & 0xff;
send_buffer[5] = le_right_coeff >> 8;
send_buffer[6] = le_left_coeff & 0xff;
send_buffer[7] = le_left_coeff >> 8;
send_buffer[8] = le_deadband_right & 0xff;
send_buffer[9] = le_deadband_right >> 8;
send_buffer[10] = le_deadband_left & 0xff;
send_buffer[11] = le_deadband_left >> 8;
memcpy(&send_buffer[12], spring_values, ARRAY_SIZE(spring_values));
send_buffer[29] = 0x4f;
send_buffer[30] = le_duration & 0xff;
send_buffer[31] = le_duration >> 8;
send_buffer[34] = le_offset & 0xff;
send_buffer[35] = le_offset >> 8;
send_buffer[37] = 0xff;
send_buffer[38] = 0xff;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed uploading spring\n");
}
kfree(send_buffer);
return ret;
}
static int t300rs_upload_damper(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
u8 *send_buffer = kzalloc(T300RS_BUFFER_LENGTH, GFP_ATOMIC);
struct ff_effect effect = state->effect;
/* we only care about the first axis */
struct ff_condition_effect spring = state->effect.u.condition[0];
int ret, trans;
u16 duration, le_right_coeff, le_left_coeff, le_deadband_right, le_deadband_left,
le_duration, le_offset;
if(test_bit(FF_EFFECT_PLAYING, &state->flags) &&
test_bit(FF_EFFECT_QUEUE_UPDATE, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_UPLOAD, &state->flags);
return t300rs_modify_damper(t300rs, state, send_buffer);
}
if(effect.replay.length == 0){
duration = 0xffff;
} else {
duration = effect.replay.length;
}
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x64;
le_right_coeff = cpu_to_le16(spring.right_coeff);
le_left_coeff = cpu_to_le16(spring.left_coeff);
le_deadband_right = cpu_to_le16(0xfffe - spring.deadband - spring.center);
le_deadband_left = cpu_to_le16(0xfffe - spring.deadband + spring.center);
le_duration = cpu_to_le16(duration);
le_offset = cpu_to_le16(effect.replay.delay);
send_buffer[4] = le_right_coeff & 0xff;
send_buffer[5] = le_right_coeff >> 8;
send_buffer[6] = le_left_coeff & 0xff;
send_buffer[7] = le_left_coeff >> 8;
send_buffer[8] = le_deadband_right & 0xff;
send_buffer[9] = le_deadband_right >> 8;
send_buffer[10] = le_deadband_left & 0xff;
send_buffer[11] = le_deadband_left >> 8;
memcpy(&send_buffer[12], damper_values, ARRAY_SIZE(damper_values));
send_buffer[29] = 0x4f;
send_buffer[30] = le_duration & 0xff;
send_buffer[31] = le_duration >> 8;
send_buffer[34] = le_offset & 0xff;
send_buffer[35] = le_offset >> 8;
send_buffer[37] = 0xff;
send_buffer[38] = 0xff;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed uploading spring\n");
}
kfree(send_buffer);
return ret;
}
static int t300rs_upload_periodic(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
u8 *send_buffer = kzalloc(T300RS_BUFFER_LENGTH, GFP_ATOMIC);
struct ff_effect effect = state->effect;
struct ff_periodic_effect periodic = state->effect.u.periodic;
int ret, trans;
u16 duration, magnitude, le_magnitude, le_phase, le_period, le_offset, le_duration;
s16 le_periodic_offset;
if(test_bit(FF_EFFECT_PLAYING, &state->flags) &&
test_bit(FF_EFFECT_QUEUE_UPDATE, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_UPLOAD, &state->flags);
return t300rs_modify_periodic(t300rs, state, send_buffer);
}
if(effect.replay.length == 0){
duration = 0xffff;
} else {
duration = effect.replay.length;
}
magnitude = (periodic.magnitude * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
le_magnitude = cpu_to_le16(magnitude);
le_phase = cpu_to_le16(periodic.phase);
le_periodic_offset = cpu_to_le16(periodic.offset);
le_period = cpu_to_le16(periodic.period);
le_offset = cpu_to_le16(effect.replay.delay);
le_duration = cpu_to_le16(duration);
send_buffer[0] = 0x60;
send_buffer[2] = effect.id + 1;
send_buffer[3] = 0x6b;
send_buffer[4] = le_magnitude & 0xff;
send_buffer[5] = le_magnitude >> 8;
send_buffer[6] = le_phase & 0xff;
send_buffer[7] = le_phase >> 8;
send_buffer[8] = le_periodic_offset & 0xff;
send_buffer[9] = le_periodic_offset >> 8;
send_buffer[10] = le_period & 0xff;
send_buffer[11] = le_period >> 8;
send_buffer[13] = 0x80;
t300rs_fill_envelope(send_buffer, 14, magnitude,
effect.replay.length, &periodic.envelope);
send_buffer[22] = periodic.waveform - 0x57;
send_buffer[23] = 0x4f;
send_buffer[24] = le_duration & 0xff;
send_buffer[25] = le_duration >> 8;
send_buffer[28] = le_offset & 0xff;
send_buffer[29] = le_offset >> 8;
send_buffer[31] = 0xff;
send_buffer[32] = 0xff;
ret = t300rs_send_int(t300rs->input_dev, send_buffer, &trans);
if(ret){
hid_err(t300rs->hdev, "failed uploading periodic effect");
}
kfree(send_buffer);
return ret;
}
static int t300rs_upload_effect(struct t300rs_device_entry *t300rs, struct t300rs_effect_state *state){
switch(state->effect.type){
case FF_CONSTANT:
return t300rs_upload_constant(t300rs, state);
case FF_RAMP:
return t300rs_upload_ramp(t300rs, state);
case FF_SPRING:
return t300rs_upload_spring(t300rs, state);
case FF_DAMPER:
case FF_FRICTION:
case FF_INERTIA:
return t300rs_upload_damper(t300rs, state);
case FF_PERIODIC:
return t300rs_upload_periodic(t300rs, state);
default:
hid_err(t300rs->hdev, "invalid effect type: %x", state->effect.type);
return -1;
}
}
static int t300rs_timer_helper(struct t300rs_device_entry *t300rs){
struct t300rs_effect_state *state;
unsigned long jiffies_now = JIFFIES2MS(jiffies);
int max_count = 0, effect_id, ret;
for(effect_id = 0; effect_id < T300RS_MAX_EFFECTS; ++effect_id){
state = &t300rs->states[effect_id];
if(test_bit(FF_EFFECT_PLAYING, &state->flags) && state->effect.replay.length){
if((jiffies_now - state->start_time) >= state->effect.replay.length){
__clear_bit(FF_EFFECT_PLAYING, &state->flags);
/* lazy bum fix? */
__clear_bit(FF_EFFECT_QUEUE_UPDATE, &state->flags);
if(state->count){
__set_bit(FF_EFFECT_QUEUE_START, &state->flags);
}
}
}
if(test_bit(FF_EFFECT_QUEUE_UPLOAD, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_UPLOAD, &state->flags);
ret = t300rs_upload_effect(t300rs, state);
if(ret){
hid_err(t300rs->hdev, "failed uploading effects");
return ret;
}
}
if(test_bit(FF_EFFECT_QUEUE_START, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_START, &state->flags);
__set_bit(FF_EFFECT_PLAYING, &state->flags);
ret = t300rs_play_effect(t300rs, state);
if(ret){
hid_err(t300rs->hdev, "failed starting effects\n");
return ret;
}
if(state->count){
state->count--;
}
}
if(test_bit(FF_EFFECT_QUEUE_STOP, &state->flags)){
__clear_bit(FF_EFFECT_QUEUE_STOP, &state->flags);
__clear_bit(FF_EFFECT_PLAYING, &state->flags);
ret = t300rs_stop_effect(t300rs, state);
if(ret){
hid_err(t300rs->hdev, "failed stopping effect\n");
return ret;
}
}
if(state->count > max_count){
max_count = state->count;
}
}
return max_count;
}
static enum hrtimer_restart t300rs_timer(struct hrtimer *t){
struct t300rs_device_entry *t300rs = container_of(t, struct t300rs_device_entry, hrtimer);
int max_count;
max_count = t300rs_timer_helper(t300rs);
if(max_count > 0){
hrtimer_forward_now(&t300rs->hrtimer, ms_to_ktime(timer_msecs));
return HRTIMER_RESTART;
} else {
return HRTIMER_NORESTART;
}
}
static int t300rs_upload(struct input_dev *dev, struct ff_effect *effect, struct ff_effect *old){
struct hid_device *hdev = input_get_drvdata(dev);
struct t300rs_device_entry *t300rs;
struct t300rs_effect_state *state;