Lines Matching full:ts
100 static bool mxs_lradc_check_touch_event(struct mxs_lradc_ts *ts) in mxs_lradc_check_touch_event() argument
102 return !!(readl(ts->base + LRADC_STATUS) & in mxs_lradc_check_touch_event()
106 static void mxs_lradc_map_ts_channel(struct mxs_lradc_ts *ts, unsigned int vch, in mxs_lradc_map_ts_channel() argument
110 ts->base + LRADC_CTRL4 + STMP_OFFSET_REG_CLR); in mxs_lradc_map_ts_channel()
112 ts->base + LRADC_CTRL4 + STMP_OFFSET_REG_SET); in mxs_lradc_map_ts_channel()
115 static void mxs_lradc_setup_ts_channel(struct mxs_lradc_ts *ts, unsigned int ch) in mxs_lradc_setup_ts_channel() argument
126 LRADC_CH_NUM_SAMPLES(ts->over_sample_cnt - 1), in mxs_lradc_setup_ts_channel()
127 ts->base + LRADC_CH(ch)); in mxs_lradc_setup_ts_channel()
134 ts->base + LRADC_CH(ch) + STMP_OFFSET_REG_CLR); in mxs_lradc_setup_ts_channel()
145 LRADC_DELAY_LOOP(ts->over_sample_cnt - 1) | in mxs_lradc_setup_ts_channel()
146 LRADC_DELAY_DELAY(ts->over_sample_delay - 1), in mxs_lradc_setup_ts_channel()
147 ts->base + LRADC_DELAY(3)); in mxs_lradc_setup_ts_channel()
150 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_setup_ts_channel()
159 LRADC_DELAY_KICK | LRADC_DELAY_DELAY(ts->settling_delay), in mxs_lradc_setup_ts_channel()
160 ts->base + LRADC_DELAY(2)); in mxs_lradc_setup_ts_channel()
169 static void mxs_lradc_setup_ts_pressure(struct mxs_lradc_ts *ts, in mxs_lradc_setup_ts_pressure() argument
183 LRADC_CH_NUM_SAMPLES(ts->over_sample_cnt - 1); in mxs_lradc_setup_ts_pressure()
184 writel(reg, ts->base + LRADC_CH(ch1)); in mxs_lradc_setup_ts_pressure()
185 writel(reg, ts->base + LRADC_CH(ch2)); in mxs_lradc_setup_ts_pressure()
192 ts->base + LRADC_CH(ch1) + STMP_OFFSET_REG_CLR); in mxs_lradc_setup_ts_pressure()
194 ts->base + LRADC_CH(ch2) + STMP_OFFSET_REG_CLR); in mxs_lradc_setup_ts_pressure()
199 LRADC_DELAY_LOOP(ts->over_sample_cnt - 1) | in mxs_lradc_setup_ts_pressure()
200 LRADC_DELAY_DELAY(ts->over_sample_delay - 1), in mxs_lradc_setup_ts_pressure()
201 ts->base + LRADC_DELAY(3)); in mxs_lradc_setup_ts_pressure()
204 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_setup_ts_pressure()
213 LRADC_DELAY_KICK | LRADC_DELAY_DELAY(ts->settling_delay), in mxs_lradc_setup_ts_pressure()
214 ts->base + LRADC_DELAY(2)); in mxs_lradc_setup_ts_pressure()
217 static unsigned int mxs_lradc_ts_read_raw_channel(struct mxs_lradc_ts *ts, in mxs_lradc_ts_read_raw_channel() argument
223 reg = readl(ts->base + LRADC_CH(channel)); in mxs_lradc_ts_read_raw_channel()
225 num_samples = ts->over_sample_cnt; in mxs_lradc_ts_read_raw_channel()
233 static unsigned int mxs_lradc_read_ts_pressure(struct mxs_lradc_ts *ts, in mxs_lradc_read_ts_pressure() argument
240 reg = readl(ts->base + LRADC_CTRL1) & mask; in mxs_lradc_read_ts_pressure()
243 reg = readl(ts->base + LRADC_CTRL1) & mask; in mxs_lradc_read_ts_pressure()
244 dev_dbg(ts->dev, "One channel is still busy: %X\n", reg); in mxs_lradc_read_ts_pressure()
247 m1 = mxs_lradc_ts_read_raw_channel(ts, ch1); in mxs_lradc_read_ts_pressure()
248 m2 = mxs_lradc_ts_read_raw_channel(ts, ch2); in mxs_lradc_read_ts_pressure()
251 dev_warn(ts->dev, "Cannot calculate pressure\n"); in mxs_lradc_read_ts_pressure()
260 dev_dbg(ts->dev, "Pressure = %u\n", pressure); in mxs_lradc_read_ts_pressure()
281 static void mxs_lradc_setup_touch_detection(struct mxs_lradc_ts *ts) in mxs_lradc_setup_touch_detection() argument
283 struct mxs_lradc *lradc = ts->lradc; in mxs_lradc_setup_touch_detection()
292 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR); in mxs_lradc_setup_touch_detection()
294 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET); in mxs_lradc_setup_touch_detection()
309 static void mxs_lradc_prepare_x_pos(struct mxs_lradc_ts *ts) in mxs_lradc_prepare_x_pos() argument
311 struct mxs_lradc *lradc = ts->lradc; in mxs_lradc_prepare_x_pos()
314 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR); in mxs_lradc_prepare_x_pos()
316 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET); in mxs_lradc_prepare_x_pos()
318 ts->cur_plate = LRADC_SAMPLE_X; in mxs_lradc_prepare_x_pos()
319 mxs_lradc_map_ts_channel(ts, TOUCHSCREEN_VCHANNEL1, TS_CH_YP); in mxs_lradc_prepare_x_pos()
320 mxs_lradc_setup_ts_channel(ts, TOUCHSCREEN_VCHANNEL1); in mxs_lradc_prepare_x_pos()
335 static void mxs_lradc_prepare_y_pos(struct mxs_lradc_ts *ts) in mxs_lradc_prepare_y_pos() argument
337 struct mxs_lradc *lradc = ts->lradc; in mxs_lradc_prepare_y_pos()
340 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR); in mxs_lradc_prepare_y_pos()
342 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET); in mxs_lradc_prepare_y_pos()
344 ts->cur_plate = LRADC_SAMPLE_Y; in mxs_lradc_prepare_y_pos()
345 mxs_lradc_map_ts_channel(ts, TOUCHSCREEN_VCHANNEL1, TS_CH_XM); in mxs_lradc_prepare_y_pos()
346 mxs_lradc_setup_ts_channel(ts, TOUCHSCREEN_VCHANNEL1); in mxs_lradc_prepare_y_pos()
361 static void mxs_lradc_prepare_pressure(struct mxs_lradc_ts *ts) in mxs_lradc_prepare_pressure() argument
363 struct mxs_lradc *lradc = ts->lradc; in mxs_lradc_prepare_pressure()
366 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR); in mxs_lradc_prepare_pressure()
368 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET); in mxs_lradc_prepare_pressure()
370 ts->cur_plate = LRADC_SAMPLE_PRESSURE; in mxs_lradc_prepare_pressure()
371 mxs_lradc_map_ts_channel(ts, TOUCHSCREEN_VCHANNEL1, TS_CH_YM); in mxs_lradc_prepare_pressure()
372 mxs_lradc_map_ts_channel(ts, TOUCHSCREEN_VCHANNEL2, TS_CH_XP); in mxs_lradc_prepare_pressure()
373 mxs_lradc_setup_ts_pressure(ts, TOUCHSCREEN_VCHANNEL2, in mxs_lradc_prepare_pressure()
377 static void mxs_lradc_enable_touch_detection(struct mxs_lradc_ts *ts) in mxs_lradc_enable_touch_detection() argument
379 mxs_lradc_setup_touch_detection(ts); in mxs_lradc_enable_touch_detection()
381 ts->cur_plate = LRADC_TOUCH; in mxs_lradc_enable_touch_detection()
383 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_enable_touch_detection()
385 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_SET); in mxs_lradc_enable_touch_detection()
388 static void mxs_lradc_start_touch_event(struct mxs_lradc_ts *ts) in mxs_lradc_start_touch_event() argument
391 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_start_touch_event()
393 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_SET); in mxs_lradc_start_touch_event()
398 mxs_lradc_prepare_y_pos(ts); in mxs_lradc_start_touch_event()
401 static void mxs_lradc_report_ts_event(struct mxs_lradc_ts *ts) in mxs_lradc_report_ts_event() argument
403 input_report_abs(ts->ts_input, ABS_X, ts->ts_x_pos); in mxs_lradc_report_ts_event()
404 input_report_abs(ts->ts_input, ABS_Y, ts->ts_y_pos); in mxs_lradc_report_ts_event()
405 input_report_abs(ts->ts_input, ABS_PRESSURE, ts->ts_pressure); in mxs_lradc_report_ts_event()
406 input_report_key(ts->ts_input, BTN_TOUCH, 1); in mxs_lradc_report_ts_event()
407 input_sync(ts->ts_input); in mxs_lradc_report_ts_event()
410 static void mxs_lradc_complete_touch_event(struct mxs_lradc_ts *ts) in mxs_lradc_complete_touch_event() argument
412 mxs_lradc_setup_touch_detection(ts); in mxs_lradc_complete_touch_event()
413 ts->cur_plate = LRADC_SAMPLE_VALID; in mxs_lradc_complete_touch_event()
418 writel(0, ts->base + LRADC_CH(TOUCHSCREEN_VCHANNEL1)); in mxs_lradc_complete_touch_event()
421 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_complete_touch_event()
424 ts->base + LRADC_DELAY(2)); in mxs_lradc_complete_touch_event()
431 static void mxs_lradc_finish_touch_event(struct mxs_lradc_ts *ts, bool valid) in mxs_lradc_finish_touch_event() argument
434 if (valid && mxs_lradc_check_touch_event(ts)) { in mxs_lradc_finish_touch_event()
435 ts->ts_valid = true; in mxs_lradc_finish_touch_event()
436 mxs_lradc_report_ts_event(ts); in mxs_lradc_finish_touch_event()
440 if (mxs_lradc_check_touch_event(ts)) { in mxs_lradc_finish_touch_event()
441 mxs_lradc_prepare_y_pos(ts); in mxs_lradc_finish_touch_event()
445 if (ts->ts_valid) { in mxs_lradc_finish_touch_event()
447 ts->ts_valid = false; in mxs_lradc_finish_touch_event()
448 input_report_key(ts->ts_input, BTN_TOUCH, 0); in mxs_lradc_finish_touch_event()
449 input_sync(ts->ts_input); in mxs_lradc_finish_touch_event()
453 ts->cur_plate = LRADC_TOUCH; in mxs_lradc_finish_touch_event()
454 writel(0, ts->base + LRADC_DELAY(2)); in mxs_lradc_finish_touch_event()
455 writel(0, ts->base + LRADC_DELAY(3)); in mxs_lradc_finish_touch_event()
459 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_finish_touch_event()
461 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_SET); in mxs_lradc_finish_touch_event()
465 static void mxs_lradc_handle_touch(struct mxs_lradc_ts *ts) in mxs_lradc_handle_touch() argument
467 switch (ts->cur_plate) { in mxs_lradc_handle_touch()
469 if (mxs_lradc_check_touch_event(ts)) in mxs_lradc_handle_touch()
470 mxs_lradc_start_touch_event(ts); in mxs_lradc_handle_touch()
472 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_handle_touch()
476 ts->ts_y_pos = in mxs_lradc_handle_touch()
477 mxs_lradc_ts_read_raw_channel(ts, TOUCHSCREEN_VCHANNEL1); in mxs_lradc_handle_touch()
478 mxs_lradc_prepare_x_pos(ts); in mxs_lradc_handle_touch()
482 ts->ts_x_pos = in mxs_lradc_handle_touch()
483 mxs_lradc_ts_read_raw_channel(ts, TOUCHSCREEN_VCHANNEL1); in mxs_lradc_handle_touch()
484 mxs_lradc_prepare_pressure(ts); in mxs_lradc_handle_touch()
488 ts->ts_pressure = in mxs_lradc_handle_touch()
489 mxs_lradc_read_ts_pressure(ts, in mxs_lradc_handle_touch()
492 mxs_lradc_complete_touch_event(ts); in mxs_lradc_handle_touch()
496 mxs_lradc_finish_touch_event(ts, 1); in mxs_lradc_handle_touch()
504 struct mxs_lradc_ts *ts = data; in mxs_lradc_ts_handle_irq() local
505 struct mxs_lradc *lradc = ts->lradc; in mxs_lradc_ts_handle_irq()
506 unsigned long reg = readl(ts->base + LRADC_CTRL1); in mxs_lradc_ts_handle_irq()
518 spin_lock_irqsave(&ts->lock, flags); in mxs_lradc_ts_handle_irq()
519 mxs_lradc_handle_touch(ts); in mxs_lradc_ts_handle_irq()
520 spin_unlock_irqrestore(&ts->lock, flags); in mxs_lradc_ts_handle_irq()
525 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_ts_handle_irq()
533 struct mxs_lradc_ts *ts = input_get_drvdata(dev); in mxs_lradc_ts_open() local
536 mxs_lradc_enable_touch_detection(ts); in mxs_lradc_ts_open()
541 static void mxs_lradc_ts_stop(struct mxs_lradc_ts *ts) in mxs_lradc_ts_stop() argument
544 struct mxs_lradc *lradc = ts->lradc; in mxs_lradc_ts_stop()
550 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_ts_stop()
554 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR); in mxs_lradc_ts_stop()
557 ts->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR); in mxs_lradc_ts_stop()
560 writel(0, ts->base + LRADC_DELAY(i)); in mxs_lradc_ts_stop()
565 struct mxs_lradc_ts *ts = input_get_drvdata(dev); in mxs_lradc_ts_close() local
567 mxs_lradc_ts_stop(ts); in mxs_lradc_ts_close()
570 static void mxs_lradc_ts_hw_init(struct mxs_lradc_ts *ts) in mxs_lradc_ts_hw_init() argument
572 struct mxs_lradc *lradc = ts->lradc; in mxs_lradc_ts_hw_init()
577 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR); in mxs_lradc_ts_hw_init()
581 ts->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET); in mxs_lradc_ts_hw_init()
585 static int mxs_lradc_ts_register(struct mxs_lradc_ts *ts) in mxs_lradc_ts_register() argument
588 struct device *dev = ts->dev; in mxs_lradc_ts_register()
594 input->name = "mxs-lradc-ts"; in mxs_lradc_ts_register()
606 ts->ts_input = input; in mxs_lradc_ts_register()
607 input_set_drvdata(input, ts); in mxs_lradc_ts_register()
617 struct mxs_lradc_ts *ts; in mxs_lradc_ts_probe() local
622 ts = devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL); in mxs_lradc_ts_probe()
623 if (!ts) in mxs_lradc_ts_probe()
626 platform_set_drvdata(pdev, ts); in mxs_lradc_ts_probe()
628 ts->lradc = lradc; in mxs_lradc_ts_probe()
629 ts->dev = dev; in mxs_lradc_ts_probe()
630 spin_lock_init(&ts->lock); in mxs_lradc_ts_probe()
635 ts->base = devm_ioremap(dev, iores->start, resource_size(iores)); in mxs_lradc_ts_probe()
636 if (!ts->base) in mxs_lradc_ts_probe()
645 ts->over_sample_cnt = 4; in mxs_lradc_ts_probe()
648 ts->over_sample_cnt = adapt; in mxs_lradc_ts_probe()
650 dev_err(ts->dev, "Invalid sample count (%u)\n", in mxs_lradc_ts_probe()
657 ts->over_sample_delay = 2; in mxs_lradc_ts_probe()
660 ts->over_sample_delay = adapt; in mxs_lradc_ts_probe()
662 dev_err(ts->dev, "Invalid sample delay (%u)\n", in mxs_lradc_ts_probe()
669 ts->settling_delay = 10; in mxs_lradc_ts_probe()
672 ts->settling_delay = adapt; in mxs_lradc_ts_probe()
674 dev_err(ts->dev, "Invalid settling delay (%u)\n", in mxs_lradc_ts_probe()
680 ret = stmp_reset_block(ts->base); in mxs_lradc_ts_probe()
684 mxs_lradc_ts_hw_init(ts); in mxs_lradc_ts_probe()
693 mxs_lradc_ts_stop(ts); in mxs_lradc_ts_probe()
697 0, mxs_lradc_ts_irq_names[i], ts); in mxs_lradc_ts_probe()
702 return mxs_lradc_ts_register(ts); in mxs_lradc_ts_probe()
707 .name = "mxs-lradc-ts",
716 MODULE_ALIAS("platform:mxs-lradc-ts");