joystick/iforce/iforce-ff.c

12  * Set the magnitude of a constant force effect
45  * Upload the component of an effect dealing with the period, phase and magnitude
83  * Uploads the part of an effect setting the envelope of the force
178  * Analyse the changes in an effect, and tell if we need to send an condition
189 		dev_warn(&iforce->dev->dev, "bad effect type in %s\n",
206  * Analyse the changes in an effect, and tell if we need to send a magnitude
211 				   struct ff_effect *effect)
213 	if (effect->type != FF_CONSTANT) {
214 		dev_warn(&iforce->dev->dev, "bad effect type in %s\n",
219 	return old->u.constant.level != effect->u.constant.level;
223  * Analyse the changes in an effect, and tell if we need to send an envelope
227 				  struct ff_effect *effect)
229 	switch (effect->type) {
231 		if (old->u.constant.envelope.attack_length != effect->u.constant.envelope.attack_length
232 		|| old->u.constant.envelope.attack_level != effect->u.constant.envelope.attack_level
233 		|| old->u.constant.envelope.fade_length != effect->u.constant.envelope.fade_length
234 		|| old->u.constant.envelope.fade_level != effect->u.constant.envelope.fade_level)
239 		if (old->u.periodic.envelope.attack_length != effect->u.periodic.envelope.attack_length
240 		|| old->u.periodic.envelope.attack_level != effect->u.periodic.envelope.attack_level
241 		|| old->u.periodic.envelope.fade_length != effect->u.periodic.envelope.fade_length
242 		|| old->u.periodic.envelope.fade_level != effect->u.periodic.envelope.fade_level)
247 		dev_warn(&iforce->dev->dev, "bad effect type in %s\n",
255  * Analyse the changes in an effect, and tell if we need to send a periodic
256  * parameter effect
262 		dev_warn(&iforce->dev->dev, "bad effect type in %s\n",
273  * Analyse the changes in an effect, and tell if we need to send an effect
320 	/* Stop effect */
325 	/* If needed, restart effect */
335  * Upload a periodic effect to the device
338 int iforce_upload_periodic(struct iforce *iforce, struct ff_effect *effect, struct ff_effect *old)
341 	int core_id = effect->id;
349 	if (!old || need_period_modifier(iforce, old, effect)) {
352 			effect->u.periodic.magnitude, effect->u.periodic.offset,
353 			effect->u.periodic.period, effect->u.periodic.phase);
359 	if (!old || need_envelope_modifier(iforce, old, effect)) {
362 			effect->u.periodic.envelope.attack_length,
363 			effect->u.periodic.envelope.attack_level,
364 			effect->u.periodic.envelope.fade_length,
365 			effect->u.periodic.envelope.fade_level);
371 	switch (effect->u.periodic.waveform) {
380 	if (!old || need_core(old, effect)) {
381 		core_err = make_core(iforce, effect->id,
386 			effect->replay.length,
387 			effect->replay.delay,
388 			effect->trigger.button,
389 			effect->trigger.interval,
390 			effect->direction);
403  * Upload a constant force effect
406  *  0 Ok, effect created or updated
407  *  1 effect did not change since last upload, and no packet was therefore sent
409 int iforce_upload_constant(struct iforce *iforce, struct ff_effect *effect, struct ff_effect *old)
411 	int core_id = effect->id;
419 	if (!old || need_magnitude_modifier(iforce, old, effect)) {
422 			effect->u.constant.level);
428 	if (!old || need_envelope_modifier(iforce, old, effect)) {
431 			effect->u.constant.envelope.attack_length,
432 			effect->u.constant.envelope.attack_level,
433 			effect->u.constant.envelope.fade_length,
434 			effect->u.constant.envelope.fade_level);
440 	if (!old || need_core(old, effect)) {
441 		core_err = make_core(iforce, effect->id,
446 			effect->replay.length,
447 			effect->replay.delay,
448 			effect->trigger.button,
449 			effect->trigger.interval,
450 			effect->direction);
463  * Upload an condition effect. Those are for example friction, inertia, springs...
465 int iforce_upload_condition(struct iforce *iforce, struct ff_effect *effect, struct ff_effect *old)
467 	int core_id = effect->id;
475 	switch (effect->type) {
481 	if (!old || need_condition_modifier(iforce, old, effect)) {
484 			effect->u.condition[0].right_saturation,
485 			effect->u.condition[0].left_saturation,
486 			effect->u.condition[0].right_coeff,
487 			effect->u.condition[0].left_coeff,
488 			effect->u.condition[0].deadband,
489 			effect->u.condition[0].center);
496 			effect->u.condition[1].right_saturation,
497 			effect->u.condition[1].left_saturation,
498 			effect->u.condition[1].right_coeff,
499 			effect->u.condition[1].left_coeff,
500 			effect->u.condition[1].deadband,
501 			effect->u.condition[1].center);
508 	if (!old || need_core(old, effect)) {
509 		core_err = make_core(iforce, effect->id,
512 			effect->replay.length, effect->replay.delay,
513 			effect->trigger.button, effect->trigger.interval,
514 			effect->direction);