Lines Matching refs:st
137 #define AT91_ADC_CHAN(st, ch) \ argument
138 (st->registers->channel_base + (ch * 4))
139 #define at91_adc_readl(st, reg) \ argument
140 (readl_relaxed(st->reg_base + reg))
141 #define at91_adc_writel(st, reg, val) \ argument
142 (writel_relaxed(val, st->reg_base + reg))
247 struct at91_adc_state *st = iio_priv(idev); in at91_adc_trigger_handler() local
253 st->buffer[j] = at91_adc_readl(st, AT91_ADC_CHAN(st, i)); in at91_adc_trigger_handler()
257 iio_push_to_buffers_with_timestamp(idev, st->buffer, pf->timestamp); in at91_adc_trigger_handler()
262 at91_adc_readl(st, AT91_ADC_LCDR); in at91_adc_trigger_handler()
264 enable_irq(st->irq); in at91_adc_trigger_handler()
272 struct at91_adc_state *st = iio_priv(idev); in handle_adc_eoc_trigger() local
278 st->last_value = at91_adc_readl(st, AT91_ADC_CHAN(st, st->chnb)); in handle_adc_eoc_trigger()
279 st->done = true; in handle_adc_eoc_trigger()
280 wake_up_interruptible(&st->wq_data_avail); in handle_adc_eoc_trigger()
284 static int at91_ts_sample(struct at91_adc_state *st) in at91_ts_sample() argument
290 struct iio_dev *idev = iio_priv_to_dev(st); in at91_ts_sample()
292 unsigned int xyz_mask_bits = st->res; in at91_ts_sample()
297 reg = at91_adc_readl(st, AT91_ADC_TSXPOSR); in at91_ts_sample()
308 reg = at91_adc_readl(st, AT91_ADC_TSYPOSR); in at91_ts_sample()
319 reg = at91_adc_readl(st, AT91_ADC_TSPRESSR); in at91_ts_sample()
327 pres = st->ts_pressure_threshold; /* no pen contacted */ in at91_ts_sample()
332 if (pres < st->ts_pressure_threshold) { in at91_ts_sample()
335 input_report_abs(st->ts_input, ABS_X, x); in at91_ts_sample()
336 input_report_abs(st->ts_input, ABS_Y, y); in at91_ts_sample()
337 input_report_abs(st->ts_input, ABS_PRESSURE, pres); in at91_ts_sample()
338 input_report_key(st->ts_input, BTN_TOUCH, 1); in at91_ts_sample()
339 input_sync(st->ts_input); in at91_ts_sample()
350 struct at91_adc_state *st = iio_priv(idev); in at91_adc_rl_interrupt() local
351 u32 status = at91_adc_readl(st, st->registers->status_register); in at91_adc_rl_interrupt()
354 status &= at91_adc_readl(st, AT91_ADC_IMR); in at91_adc_rl_interrupt()
355 if (status & GENMASK(st->num_channels - 1, 0)) in at91_adc_rl_interrupt()
360 reg = at91_adc_readl(st, AT91_ADC_MR); in at91_adc_rl_interrupt()
362 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_adc_rl_interrupt()
364 at91_adc_writel(st, AT91_ADC_IDR, AT91RL_ADC_IER_PEN); in at91_adc_rl_interrupt()
365 at91_adc_writel(st, AT91_ADC_IER, AT91RL_ADC_IER_NOPEN in at91_adc_rl_interrupt()
368 at91_adc_writel(st, st->registers->trigger_register, in at91_adc_rl_interrupt()
370 AT91_ADC_TRGR_TRGPER_(st->ts_sample_period_val)); in at91_adc_rl_interrupt()
372 reg = at91_adc_readl(st, AT91_ADC_MR); in at91_adc_rl_interrupt()
373 reg |= AT91_ADC_PENDBC_(st->ts_pendbc) & AT91_ADC_PENDBC; in at91_adc_rl_interrupt()
374 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_adc_rl_interrupt()
375 at91_adc_writel(st, st->registers->trigger_register, in at91_adc_rl_interrupt()
378 at91_adc_writel(st, AT91_ADC_IDR, AT91RL_ADC_IER_NOPEN in at91_adc_rl_interrupt()
380 at91_adc_writel(st, AT91_ADC_IER, AT91RL_ADC_IER_PEN); in at91_adc_rl_interrupt()
381 st->ts_bufferedmeasure = false; in at91_adc_rl_interrupt()
382 input_report_key(st->ts_input, BTN_TOUCH, 0); in at91_adc_rl_interrupt()
383 input_sync(st->ts_input); in at91_adc_rl_interrupt()
386 if (st->ts_bufferedmeasure) { in at91_adc_rl_interrupt()
392 input_report_abs(st->ts_input, ABS_X, st->ts_prev_absx); in at91_adc_rl_interrupt()
393 input_report_abs(st->ts_input, ABS_Y, st->ts_prev_absy); in at91_adc_rl_interrupt()
394 input_report_key(st->ts_input, BTN_TOUCH, 1); in at91_adc_rl_interrupt()
395 input_sync(st->ts_input); in at91_adc_rl_interrupt()
397 st->ts_bufferedmeasure = true; in at91_adc_rl_interrupt()
400 st->ts_prev_absx = at91_adc_readl(st, AT91_ADC_CHAN(st, 3)) in at91_adc_rl_interrupt()
402 st->ts_prev_absx /= at91_adc_readl(st, AT91_ADC_CHAN(st, 2)); in at91_adc_rl_interrupt()
404 st->ts_prev_absy = at91_adc_readl(st, AT91_ADC_CHAN(st, 1)) in at91_adc_rl_interrupt()
406 st->ts_prev_absy /= at91_adc_readl(st, AT91_ADC_CHAN(st, 0)); in at91_adc_rl_interrupt()
415 struct at91_adc_state *st = iio_priv(idev); in at91_adc_9x5_interrupt() local
416 u32 status = at91_adc_readl(st, st->registers->status_register); in at91_adc_9x5_interrupt()
422 if (status & GENMASK(st->num_channels - 1, 0)) in at91_adc_9x5_interrupt()
426 at91_adc_writel(st, AT91_ADC_IDR, AT91_ADC_IER_PEN); in at91_adc_9x5_interrupt()
427 at91_adc_writel(st, AT91_ADC_IER, AT91_ADC_IER_NOPEN | in at91_adc_9x5_interrupt()
430 at91_adc_writel(st, st->registers->trigger_register, in at91_adc_9x5_interrupt()
432 AT91_ADC_TRGR_TRGPER_(st->ts_sample_period_val)); in at91_adc_9x5_interrupt()
434 at91_adc_writel(st, st->registers->trigger_register, 0); in at91_adc_9x5_interrupt()
435 at91_adc_writel(st, AT91_ADC_IDR, AT91_ADC_IER_NOPEN | in at91_adc_9x5_interrupt()
437 at91_adc_writel(st, AT91_ADC_IER, AT91_ADC_IER_PEN); in at91_adc_9x5_interrupt()
439 input_report_key(st->ts_input, BTN_TOUCH, 0); in at91_adc_9x5_interrupt()
440 input_sync(st->ts_input); in at91_adc_9x5_interrupt()
446 at91_ts_sample(st); in at91_adc_9x5_interrupt()
451 at91_adc_readl(st, AT91_ADC_TSXPOSR); in at91_adc_9x5_interrupt()
452 at91_adc_readl(st, AT91_ADC_TSYPOSR); in at91_adc_9x5_interrupt()
453 at91_adc_readl(st, AT91_ADC_TSPRESSR); in at91_adc_9x5_interrupt()
462 struct at91_adc_state *st = iio_priv(idev); in at91_adc_channel_init() local
468 if (st->touchscreen_type == ATMEL_ADC_TOUCHSCREEN_4WIRE) in at91_adc_channel_init()
470 else if (st->touchscreen_type == ATMEL_ADC_TOUCHSCREEN_5WIRE) in at91_adc_channel_init()
474 st->channels_mask &= ~rsvd_mask; in at91_adc_channel_init()
476 idev->num_channels = bitmap_weight(&st->channels_mask, in at91_adc_channel_init()
477 st->num_channels) + 1; in at91_adc_channel_init()
487 for_each_set_bit(bit, &st->channels_mask, st->num_channels) { in at91_adc_channel_init()
495 chan->scan_type.realbits = st->res; in at91_adc_channel_init()
518 struct at91_adc_state *st = iio_priv(idev); in at91_adc_get_trigger_value_by_name() local
521 for (i = 0; i < st->trigger_number; i++) { in at91_adc_get_trigger_value_by_name()
546 struct at91_adc_state *st = iio_priv(idev); in at91_adc_configure_trigger() local
547 struct at91_adc_reg_desc *reg = st->registers; in at91_adc_configure_trigger()
548 u32 status = at91_adc_readl(st, reg->trigger_register); in at91_adc_configure_trigger()
553 st->trigger_list, in at91_adc_configure_trigger()
559 st->buffer = kmalloc(idev->scan_bytes, GFP_KERNEL); in at91_adc_configure_trigger()
560 if (st->buffer == NULL) in at91_adc_configure_trigger()
563 at91_adc_writel(st, reg->trigger_register, in at91_adc_configure_trigger()
567 st->num_channels) { in at91_adc_configure_trigger()
569 at91_adc_writel(st, AT91_ADC_CHER, in at91_adc_configure_trigger()
573 at91_adc_writel(st, AT91_ADC_IER, reg->drdy_mask); in at91_adc_configure_trigger()
576 at91_adc_writel(st, AT91_ADC_IDR, reg->drdy_mask); in at91_adc_configure_trigger()
578 at91_adc_writel(st, reg->trigger_register, in at91_adc_configure_trigger()
582 st->num_channels) { in at91_adc_configure_trigger()
584 at91_adc_writel(st, AT91_ADC_CHDR, in at91_adc_configure_trigger()
587 kfree(st->buffer); in at91_adc_configure_trigger()
622 struct at91_adc_state *st = iio_priv(idev); in at91_adc_trigger_init() local
625 st->trig = devm_kzalloc(&idev->dev, in at91_adc_trigger_init()
626 st->trigger_number * sizeof(*st->trig), in at91_adc_trigger_init()
629 if (st->trig == NULL) { in at91_adc_trigger_init()
634 for (i = 0; i < st->trigger_number; i++) { in at91_adc_trigger_init()
635 if (st->trigger_list[i].is_external && !(st->use_external)) in at91_adc_trigger_init()
638 st->trig[i] = at91_adc_allocate_trigger(idev, in at91_adc_trigger_init()
639 st->trigger_list + i); in at91_adc_trigger_init()
640 if (st->trig[i] == NULL) { in at91_adc_trigger_init()
652 iio_trigger_unregister(st->trig[i]); in at91_adc_trigger_init()
653 iio_trigger_free(st->trig[i]); in at91_adc_trigger_init()
661 struct at91_adc_state *st = iio_priv(idev); in at91_adc_trigger_remove() local
664 for (i = 0; i < st->trigger_number; i++) { in at91_adc_trigger_remove()
665 iio_trigger_unregister(st->trig[i]); in at91_adc_trigger_remove()
666 iio_trigger_free(st->trig[i]); in at91_adc_trigger_remove()
685 struct at91_adc_state *st = iio_priv(idev); in at91_adc_read_raw() local
690 mutex_lock(&st->lock); in at91_adc_read_raw()
692 st->chnb = chan->channel; in at91_adc_read_raw()
693 at91_adc_writel(st, AT91_ADC_CHER, in at91_adc_read_raw()
695 at91_adc_writel(st, AT91_ADC_IER, BIT(chan->channel)); in at91_adc_read_raw()
696 at91_adc_writel(st, AT91_ADC_CR, AT91_ADC_START); in at91_adc_read_raw()
698 ret = wait_event_interruptible_timeout(st->wq_data_avail, in at91_adc_read_raw()
699 st->done, in at91_adc_read_raw()
704 mutex_unlock(&st->lock); in at91_adc_read_raw()
708 *val = st->last_value; in at91_adc_read_raw()
710 at91_adc_writel(st, AT91_ADC_CHDR, in at91_adc_read_raw()
712 at91_adc_writel(st, AT91_ADC_IDR, BIT(chan->channel)); in at91_adc_read_raw()
714 st->last_value = 0; in at91_adc_read_raw()
715 st->done = false; in at91_adc_read_raw()
716 mutex_unlock(&st->lock); in at91_adc_read_raw()
720 *val = st->vref_mv; in at91_adc_read_raw()
729 static int at91_adc_of_get_resolution(struct at91_adc_state *st, in at91_adc_of_get_resolution() argument
732 struct iio_dev *idev = iio_priv_to_dev(st); in at91_adc_of_get_resolution()
765 st->res = resolutions[i]; in at91_adc_of_get_resolution()
767 st->low_res = true; in at91_adc_of_get_resolution()
769 st->low_res = false; in at91_adc_of_get_resolution()
771 dev_info(&idev->dev, "Resolution used: %u bits\n", st->res); in at91_adc_of_get_resolution()
824 struct at91_adc_state *st, struct device *dev) in at91_adc_probe_dt_ts() argument
838 st->touchscreen_type = prop; in at91_adc_probe_dt_ts()
845 if (!st->caps->has_tsmr) in at91_adc_probe_dt_ts()
849 st->ts_pressure_threshold = prop; in at91_adc_probe_dt_ts()
850 if (st->ts_pressure_threshold) { in at91_adc_probe_dt_ts()
858 static int at91_adc_probe_dt(struct at91_adc_state *st, in at91_adc_probe_dt() argument
861 struct iio_dev *idev = iio_priv_to_dev(st); in at91_adc_probe_dt()
870 st->caps = (struct at91_adc_caps *) in at91_adc_probe_dt()
873 st->use_external = of_property_read_bool(node, "atmel,adc-use-external-triggers"); in at91_adc_probe_dt()
880 st->channels_mask = prop; in at91_adc_probe_dt()
882 st->sleep_mode = of_property_read_bool(node, "atmel,adc-sleep-mode"); in at91_adc_probe_dt()
889 st->startup_time = prop; in at91_adc_probe_dt()
893 st->sample_hold_time = prop; in at91_adc_probe_dt()
900 st->vref_mv = prop; in at91_adc_probe_dt()
902 ret = at91_adc_of_get_resolution(st, pdev); in at91_adc_probe_dt()
906 st->registers = &st->caps->registers; in at91_adc_probe_dt()
907 st->num_channels = st->caps->num_channels; in at91_adc_probe_dt()
908 st->trigger_number = of_get_child_count(node); in at91_adc_probe_dt()
909 st->trigger_list = devm_kzalloc(&idev->dev, st->trigger_number * in at91_adc_probe_dt()
912 if (!st->trigger_list) { in at91_adc_probe_dt()
919 struct at91_adc_trigger *trig = st->trigger_list + i; in at91_adc_probe_dt()
940 if (st->caps->has_ts) in at91_adc_probe_dt()
941 return at91_adc_probe_dt_ts(node, st, &idev->dev); in at91_adc_probe_dt()
951 static int at91_adc_probe_pdata(struct at91_adc_state *st, in at91_adc_probe_pdata() argument
959 st->caps = (struct at91_adc_caps *) in at91_adc_probe_pdata()
962 st->use_external = pdata->use_external_triggers; in at91_adc_probe_pdata()
963 st->vref_mv = pdata->vref; in at91_adc_probe_pdata()
964 st->channels_mask = pdata->channels_used; in at91_adc_probe_pdata()
965 st->num_channels = st->caps->num_channels; in at91_adc_probe_pdata()
966 st->startup_time = pdata->startup_time; in at91_adc_probe_pdata()
967 st->trigger_number = pdata->trigger_number; in at91_adc_probe_pdata()
968 st->trigger_list = pdata->trigger_list; in at91_adc_probe_pdata()
969 st->registers = &st->caps->registers; in at91_adc_probe_pdata()
970 st->touchscreen_type = pdata->touchscreen_type; in at91_adc_probe_pdata()
983 struct at91_adc_state *st = input_get_drvdata(dev); in atmel_ts_open() local
985 if (st->caps->has_tsmr) in atmel_ts_open()
986 at91_adc_writel(st, AT91_ADC_IER, AT91_ADC_IER_PEN); in atmel_ts_open()
988 at91_adc_writel(st, AT91_ADC_IER, AT91RL_ADC_IER_PEN); in atmel_ts_open()
994 struct at91_adc_state *st = input_get_drvdata(dev); in atmel_ts_close() local
996 if (st->caps->has_tsmr) in atmel_ts_close()
997 at91_adc_writel(st, AT91_ADC_IDR, AT91_ADC_IER_PEN); in atmel_ts_close()
999 at91_adc_writel(st, AT91_ADC_IDR, AT91RL_ADC_IER_PEN); in atmel_ts_close()
1002 static int at91_ts_hw_init(struct at91_adc_state *st, u32 adc_clk_khz) in at91_ts_hw_init() argument
1011 st->ts_pendbc = round_up(TOUCH_PEN_DETECT_DEBOUNCE_US * adc_clk_khz / in at91_ts_hw_init()
1014 while (st->ts_pendbc >> ++i) in at91_ts_hw_init()
1016 if (abs(st->ts_pendbc - (1 << i)) < abs(st->ts_pendbc - (1 << (i - 1)))) in at91_ts_hw_init()
1017 st->ts_pendbc = i; in at91_ts_hw_init()
1019 st->ts_pendbc = i - 1; in at91_ts_hw_init()
1021 if (!st->caps->has_tsmr) { in at91_ts_hw_init()
1022 reg = at91_adc_readl(st, AT91_ADC_MR); in at91_ts_hw_init()
1025 reg |= AT91_ADC_PENDBC_(st->ts_pendbc) & AT91_ADC_PENDBC; in at91_ts_hw_init()
1026 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_ts_hw_init()
1029 at91_adc_writel(st, AT91_ADC_TSR, reg); in at91_ts_hw_init()
1031 st->ts_sample_period_val = round_up((TOUCH_SAMPLE_PERIOD_US_RL * in at91_ts_hw_init()
1037 if (st->touchscreen_type == ATMEL_ADC_TOUCHSCREEN_4WIRE) in at91_ts_hw_init()
1042 reg |= AT91_ADC_TSMR_TSAV_(st->caps->ts_filter_average) in at91_ts_hw_init()
1044 reg |= AT91_ADC_TSMR_PENDBC_(st->ts_pendbc) & AT91_ADC_TSMR_PENDBC; in at91_ts_hw_init()
1049 at91_adc_writel(st, AT91_ADC_TSMR, reg); in at91_ts_hw_init()
1056 at91_adc_writel(st, AT91_ADC_ACR, st->caps->ts_pen_detect_sensitivity in at91_ts_hw_init()
1060 st->ts_sample_period_val = round_up((TOUCH_SAMPLE_PERIOD_US * in at91_ts_hw_init()
1066 static int at91_ts_register(struct at91_adc_state *st, in at91_ts_register() argument
1070 struct iio_dev *idev = iio_priv_to_dev(st); in at91_ts_register()
1088 if (st->caps->has_tsmr) { in at91_ts_register()
1095 if (st->touchscreen_type != ATMEL_ADC_TOUCHSCREEN_4WIRE) { in at91_ts_register()
1108 st->ts_input = input; in at91_ts_register()
1109 input_set_drvdata(input, st); in at91_ts_register()
1118 input_free_device(st->ts_input); in at91_ts_register()
1122 static void at91_ts_unregister(struct at91_adc_state *st) in at91_ts_unregister() argument
1124 input_unregister_device(st->ts_input); in at91_ts_unregister()
1132 struct at91_adc_state *st; in at91_adc_probe() local
1140 st = iio_priv(idev); in at91_adc_probe()
1143 ret = at91_adc_probe_dt(st, pdev); in at91_adc_probe()
1145 ret = at91_adc_probe_pdata(st, pdev); in at91_adc_probe()
1159 st->irq = platform_get_irq(pdev, 0); in at91_adc_probe()
1160 if (st->irq < 0) { in at91_adc_probe()
1167 st->reg_base = devm_ioremap_resource(&pdev->dev, res); in at91_adc_probe()
1168 if (IS_ERR(st->reg_base)) { in at91_adc_probe()
1169 return PTR_ERR(st->reg_base); in at91_adc_probe()
1175 at91_adc_writel(st, AT91_ADC_CR, AT91_ADC_SWRST); in at91_adc_probe()
1176 at91_adc_writel(st, AT91_ADC_IDR, 0xFFFFFFFF); in at91_adc_probe()
1178 if (st->caps->has_tsmr) in at91_adc_probe()
1179 ret = request_irq(st->irq, at91_adc_9x5_interrupt, 0, in at91_adc_probe()
1182 ret = request_irq(st->irq, at91_adc_rl_interrupt, 0, in at91_adc_probe()
1189 st->clk = devm_clk_get(&pdev->dev, "adc_clk"); in at91_adc_probe()
1190 if (IS_ERR(st->clk)) { in at91_adc_probe()
1192 ret = PTR_ERR(st->clk); in at91_adc_probe()
1196 ret = clk_prepare_enable(st->clk); in at91_adc_probe()
1203 st->adc_clk = devm_clk_get(&pdev->dev, "adc_op_clk"); in at91_adc_probe()
1204 if (IS_ERR(st->adc_clk)) { in at91_adc_probe()
1206 ret = PTR_ERR(st->adc_clk); in at91_adc_probe()
1210 ret = clk_prepare_enable(st->adc_clk); in at91_adc_probe()
1222 mstrclk = clk_get_rate(st->clk); in at91_adc_probe()
1223 adc_clk = clk_get_rate(st->adc_clk); in at91_adc_probe()
1231 if (!st->startup_time) { in at91_adc_probe()
1236 ticks = (*st->caps->calc_startup_ticks)(st->startup_time, adc_clk_khz); in at91_adc_probe()
1243 if (st->sample_hold_time > 0) in at91_adc_probe()
1244 shtim = round_up((st->sample_hold_time * adc_clk_khz / 1000) in at91_adc_probe()
1249 reg = AT91_ADC_PRESCAL_(prsc) & st->registers->mr_prescal_mask; in at91_adc_probe()
1250 reg |= AT91_ADC_STARTUP_(ticks) & st->registers->mr_startup_mask; in at91_adc_probe()
1251 if (st->low_res) in at91_adc_probe()
1253 if (st->sleep_mode) in at91_adc_probe()
1256 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_adc_probe()
1265 init_waitqueue_head(&st->wq_data_avail); in at91_adc_probe()
1266 mutex_init(&st->lock); in at91_adc_probe()
1273 if (!st->touchscreen_type) { in at91_adc_probe()
1287 ret = at91_ts_register(st, pdev); in at91_adc_probe()
1291 at91_ts_hw_init(st, adc_clk_khz); in at91_adc_probe()
1303 if (!st->touchscreen_type) { in at91_adc_probe()
1307 at91_ts_unregister(st); in at91_adc_probe()
1310 clk_disable_unprepare(st->adc_clk); in at91_adc_probe()
1312 clk_disable_unprepare(st->clk); in at91_adc_probe()
1314 free_irq(st->irq, idev); in at91_adc_probe()
1321 struct at91_adc_state *st = iio_priv(idev); in at91_adc_remove() local
1324 if (!st->touchscreen_type) { in at91_adc_remove()
1328 at91_ts_unregister(st); in at91_adc_remove()
1330 clk_disable_unprepare(st->adc_clk); in at91_adc_remove()
1331 clk_disable_unprepare(st->clk); in at91_adc_remove()
1332 free_irq(st->irq, idev); in at91_adc_remove()