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
255 st->buffer[j] = at91_adc_readl(st, AT91_ADC_CHAN(st, chan->channel)); in at91_adc_trigger_handler()
259 iio_push_to_buffers_with_timestamp(idev, st->buffer, pf->timestamp); in at91_adc_trigger_handler()
264 at91_adc_readl(st, AT91_ADC_LCDR); in at91_adc_trigger_handler()
266 enable_irq(st->irq); in at91_adc_trigger_handler()
274 struct at91_adc_state *st = iio_priv(idev); in handle_adc_eoc_trigger() local
280 st->last_value = at91_adc_readl(st, AT91_ADC_CHAN(st, st->chnb)); in handle_adc_eoc_trigger()
282 at91_adc_readl(st, AT91_ADC_LCDR); in handle_adc_eoc_trigger()
283 st->done = true; in handle_adc_eoc_trigger()
284 wake_up_interruptible(&st->wq_data_avail); in handle_adc_eoc_trigger()
288 static int at91_ts_sample(struct at91_adc_state *st) in at91_ts_sample() argument
294 struct iio_dev *idev = iio_priv_to_dev(st); in at91_ts_sample()
296 unsigned int xyz_mask_bits = st->res; in at91_ts_sample()
301 reg = at91_adc_readl(st, AT91_ADC_TSXPOSR); in at91_ts_sample()
312 reg = at91_adc_readl(st, AT91_ADC_TSYPOSR); in at91_ts_sample()
323 reg = at91_adc_readl(st, AT91_ADC_TSPRESSR); in at91_ts_sample()
331 pres = st->ts_pressure_threshold; /* no pen contacted */ in at91_ts_sample()
336 if (pres < st->ts_pressure_threshold) { in at91_ts_sample()
339 input_report_abs(st->ts_input, ABS_X, x); in at91_ts_sample()
340 input_report_abs(st->ts_input, ABS_Y, y); in at91_ts_sample()
341 input_report_abs(st->ts_input, ABS_PRESSURE, pres); in at91_ts_sample()
342 input_report_key(st->ts_input, BTN_TOUCH, 1); in at91_ts_sample()
343 input_sync(st->ts_input); in at91_ts_sample()
354 struct at91_adc_state *st = iio_priv(idev); in at91_adc_rl_interrupt() local
355 u32 status = at91_adc_readl(st, st->registers->status_register); in at91_adc_rl_interrupt()
358 status &= at91_adc_readl(st, AT91_ADC_IMR); in at91_adc_rl_interrupt()
359 if (status & GENMASK(st->num_channels - 1, 0)) in at91_adc_rl_interrupt()
364 reg = at91_adc_readl(st, AT91_ADC_MR); in at91_adc_rl_interrupt()
366 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_adc_rl_interrupt()
368 at91_adc_writel(st, AT91_ADC_IDR, AT91RL_ADC_IER_PEN); in at91_adc_rl_interrupt()
369 at91_adc_writel(st, AT91_ADC_IER, AT91RL_ADC_IER_NOPEN in at91_adc_rl_interrupt()
372 at91_adc_writel(st, st->registers->trigger_register, in at91_adc_rl_interrupt()
374 AT91_ADC_TRGR_TRGPER_(st->ts_sample_period_val)); in at91_adc_rl_interrupt()
376 reg = at91_adc_readl(st, AT91_ADC_MR); in at91_adc_rl_interrupt()
377 reg |= AT91_ADC_PENDBC_(st->ts_pendbc) & AT91_ADC_PENDBC; in at91_adc_rl_interrupt()
378 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_adc_rl_interrupt()
379 at91_adc_writel(st, st->registers->trigger_register, in at91_adc_rl_interrupt()
382 at91_adc_writel(st, AT91_ADC_IDR, AT91RL_ADC_IER_NOPEN in at91_adc_rl_interrupt()
384 at91_adc_writel(st, AT91_ADC_IER, AT91RL_ADC_IER_PEN); in at91_adc_rl_interrupt()
385 st->ts_bufferedmeasure = false; in at91_adc_rl_interrupt()
386 input_report_key(st->ts_input, BTN_TOUCH, 0); in at91_adc_rl_interrupt()
387 input_sync(st->ts_input); in at91_adc_rl_interrupt()
388 } else if (status & AT91_ADC_EOC(3) && st->ts_input) { in at91_adc_rl_interrupt()
390 if (st->ts_bufferedmeasure) { in at91_adc_rl_interrupt()
396 input_report_abs(st->ts_input, ABS_X, st->ts_prev_absx); in at91_adc_rl_interrupt()
397 input_report_abs(st->ts_input, ABS_Y, st->ts_prev_absy); in at91_adc_rl_interrupt()
398 input_report_key(st->ts_input, BTN_TOUCH, 1); in at91_adc_rl_interrupt()
399 input_sync(st->ts_input); in at91_adc_rl_interrupt()
401 st->ts_bufferedmeasure = true; in at91_adc_rl_interrupt()
404 st->ts_prev_absx = at91_adc_readl(st, AT91_ADC_CHAN(st, 3)) in at91_adc_rl_interrupt()
406 st->ts_prev_absx /= at91_adc_readl(st, AT91_ADC_CHAN(st, 2)); in at91_adc_rl_interrupt()
408 st->ts_prev_absy = at91_adc_readl(st, AT91_ADC_CHAN(st, 1)) in at91_adc_rl_interrupt()
410 st->ts_prev_absy /= at91_adc_readl(st, AT91_ADC_CHAN(st, 0)); in at91_adc_rl_interrupt()
419 struct at91_adc_state *st = iio_priv(idev); in at91_adc_9x5_interrupt() local
420 u32 status = at91_adc_readl(st, st->registers->status_register); in at91_adc_9x5_interrupt()
426 if (status & GENMASK(st->num_channels - 1, 0)) in at91_adc_9x5_interrupt()
430 at91_adc_writel(st, AT91_ADC_IDR, AT91_ADC_IER_PEN); in at91_adc_9x5_interrupt()
431 at91_adc_writel(st, AT91_ADC_IER, AT91_ADC_IER_NOPEN | in at91_adc_9x5_interrupt()
434 at91_adc_writel(st, st->registers->trigger_register, in at91_adc_9x5_interrupt()
436 AT91_ADC_TRGR_TRGPER_(st->ts_sample_period_val)); in at91_adc_9x5_interrupt()
438 at91_adc_writel(st, st->registers->trigger_register, 0); in at91_adc_9x5_interrupt()
439 at91_adc_writel(st, AT91_ADC_IDR, AT91_ADC_IER_NOPEN | in at91_adc_9x5_interrupt()
441 at91_adc_writel(st, AT91_ADC_IER, AT91_ADC_IER_PEN); in at91_adc_9x5_interrupt()
443 input_report_key(st->ts_input, BTN_TOUCH, 0); in at91_adc_9x5_interrupt()
444 input_sync(st->ts_input); in at91_adc_9x5_interrupt()
450 at91_ts_sample(st); in at91_adc_9x5_interrupt()
455 at91_adc_readl(st, AT91_ADC_TSXPOSR); in at91_adc_9x5_interrupt()
456 at91_adc_readl(st, AT91_ADC_TSYPOSR); in at91_adc_9x5_interrupt()
457 at91_adc_readl(st, AT91_ADC_TSPRESSR); in at91_adc_9x5_interrupt()
466 struct at91_adc_state *st = iio_priv(idev); in at91_adc_channel_init() local
472 if (st->touchscreen_type == ATMEL_ADC_TOUCHSCREEN_4WIRE) in at91_adc_channel_init()
474 else if (st->touchscreen_type == ATMEL_ADC_TOUCHSCREEN_5WIRE) in at91_adc_channel_init()
478 st->channels_mask &= ~rsvd_mask; in at91_adc_channel_init()
480 idev->num_channels = bitmap_weight(&st->channels_mask, in at91_adc_channel_init()
481 st->num_channels) + 1; in at91_adc_channel_init()
491 for_each_set_bit(bit, &st->channels_mask, st->num_channels) { in at91_adc_channel_init()
499 chan->scan_type.realbits = st->res; in at91_adc_channel_init()
522 struct at91_adc_state *st = iio_priv(idev); in at91_adc_get_trigger_value_by_name() local
525 for (i = 0; i < st->trigger_number; i++) { in at91_adc_get_trigger_value_by_name()
550 struct at91_adc_state *st = iio_priv(idev); in at91_adc_configure_trigger() local
551 struct at91_adc_reg_desc *reg = st->registers; in at91_adc_configure_trigger()
552 u32 status = at91_adc_readl(st, reg->trigger_register); in at91_adc_configure_trigger()
557 st->trigger_list, in at91_adc_configure_trigger()
563 st->buffer = kmalloc(idev->scan_bytes, GFP_KERNEL); in at91_adc_configure_trigger()
564 if (st->buffer == NULL) in at91_adc_configure_trigger()
567 at91_adc_writel(st, reg->trigger_register, in at91_adc_configure_trigger()
571 st->num_channels) { in at91_adc_configure_trigger()
573 at91_adc_writel(st, AT91_ADC_CHER, in at91_adc_configure_trigger()
577 at91_adc_writel(st, AT91_ADC_IER, reg->drdy_mask); in at91_adc_configure_trigger()
580 at91_adc_writel(st, AT91_ADC_IDR, reg->drdy_mask); in at91_adc_configure_trigger()
582 at91_adc_writel(st, reg->trigger_register, in at91_adc_configure_trigger()
586 st->num_channels) { in at91_adc_configure_trigger()
588 at91_adc_writel(st, AT91_ADC_CHDR, in at91_adc_configure_trigger()
591 kfree(st->buffer); in at91_adc_configure_trigger()
626 struct at91_adc_state *st = iio_priv(idev); in at91_adc_trigger_init() local
629 st->trig = devm_kzalloc(&idev->dev, in at91_adc_trigger_init()
630 st->trigger_number * sizeof(*st->trig), in at91_adc_trigger_init()
633 if (st->trig == NULL) { in at91_adc_trigger_init()
638 for (i = 0; i < st->trigger_number; i++) { in at91_adc_trigger_init()
639 if (st->trigger_list[i].is_external && !(st->use_external)) in at91_adc_trigger_init()
642 st->trig[i] = at91_adc_allocate_trigger(idev, in at91_adc_trigger_init()
643 st->trigger_list + i); in at91_adc_trigger_init()
644 if (st->trig[i] == NULL) { in at91_adc_trigger_init()
656 iio_trigger_unregister(st->trig[i]); in at91_adc_trigger_init()
657 iio_trigger_free(st->trig[i]); in at91_adc_trigger_init()
665 struct at91_adc_state *st = iio_priv(idev); in at91_adc_trigger_remove() local
668 for (i = 0; i < st->trigger_number; i++) { in at91_adc_trigger_remove()
669 iio_trigger_unregister(st->trig[i]); in at91_adc_trigger_remove()
670 iio_trigger_free(st->trig[i]); in at91_adc_trigger_remove()
689 struct at91_adc_state *st = iio_priv(idev); in at91_adc_read_raw() local
694 mutex_lock(&st->lock); in at91_adc_read_raw()
696 st->chnb = chan->channel; in at91_adc_read_raw()
697 at91_adc_writel(st, AT91_ADC_CHER, in at91_adc_read_raw()
699 at91_adc_writel(st, AT91_ADC_IER, BIT(chan->channel)); in at91_adc_read_raw()
700 at91_adc_writel(st, AT91_ADC_CR, AT91_ADC_START); in at91_adc_read_raw()
702 ret = wait_event_interruptible_timeout(st->wq_data_avail, in at91_adc_read_raw()
703 st->done, in at91_adc_read_raw()
709 at91_adc_writel(st, AT91_ADC_CHDR, in at91_adc_read_raw()
711 at91_adc_writel(st, AT91_ADC_IDR, BIT(chan->channel)); in at91_adc_read_raw()
715 *val = st->last_value; in at91_adc_read_raw()
716 st->last_value = 0; in at91_adc_read_raw()
717 st->done = false; in at91_adc_read_raw()
726 mutex_unlock(&st->lock); in at91_adc_read_raw()
730 *val = st->vref_mv; in at91_adc_read_raw()
739 static int at91_adc_of_get_resolution(struct at91_adc_state *st, in at91_adc_of_get_resolution() argument
742 struct iio_dev *idev = iio_priv_to_dev(st); in at91_adc_of_get_resolution()
775 st->res = resolutions[i]; in at91_adc_of_get_resolution()
777 st->low_res = true; in at91_adc_of_get_resolution()
779 st->low_res = false; in at91_adc_of_get_resolution()
781 dev_info(&idev->dev, "Resolution used: %u bits\n", st->res); in at91_adc_of_get_resolution()
834 struct at91_adc_state *st, struct device *dev) in at91_adc_probe_dt_ts() argument
848 st->touchscreen_type = prop; in at91_adc_probe_dt_ts()
855 if (!st->caps->has_tsmr) in at91_adc_probe_dt_ts()
859 st->ts_pressure_threshold = prop; in at91_adc_probe_dt_ts()
860 if (st->ts_pressure_threshold) { in at91_adc_probe_dt_ts()
868 static int at91_adc_probe_dt(struct at91_adc_state *st, in at91_adc_probe_dt() argument
871 struct iio_dev *idev = iio_priv_to_dev(st); in at91_adc_probe_dt()
880 st->caps = (struct at91_adc_caps *) in at91_adc_probe_dt()
883 st->use_external = of_property_read_bool(node, "atmel,adc-use-external-triggers"); in at91_adc_probe_dt()
890 st->channels_mask = prop; in at91_adc_probe_dt()
892 st->sleep_mode = of_property_read_bool(node, "atmel,adc-sleep-mode"); in at91_adc_probe_dt()
899 st->startup_time = prop; in at91_adc_probe_dt()
903 st->sample_hold_time = prop; in at91_adc_probe_dt()
910 st->vref_mv = prop; in at91_adc_probe_dt()
912 ret = at91_adc_of_get_resolution(st, pdev); in at91_adc_probe_dt()
916 st->registers = &st->caps->registers; in at91_adc_probe_dt()
917 st->num_channels = st->caps->num_channels; in at91_adc_probe_dt()
918 st->trigger_number = of_get_child_count(node); in at91_adc_probe_dt()
919 st->trigger_list = devm_kzalloc(&idev->dev, st->trigger_number * in at91_adc_probe_dt()
922 if (!st->trigger_list) { in at91_adc_probe_dt()
929 struct at91_adc_trigger *trig = st->trigger_list + i; in at91_adc_probe_dt()
950 if (st->caps->has_ts) in at91_adc_probe_dt()
951 return at91_adc_probe_dt_ts(node, st, &idev->dev); in at91_adc_probe_dt()
961 static int at91_adc_probe_pdata(struct at91_adc_state *st, in at91_adc_probe_pdata() argument
969 st->caps = (struct at91_adc_caps *) in at91_adc_probe_pdata()
972 st->use_external = pdata->use_external_triggers; in at91_adc_probe_pdata()
973 st->vref_mv = pdata->vref; in at91_adc_probe_pdata()
974 st->channels_mask = pdata->channels_used; in at91_adc_probe_pdata()
975 st->num_channels = st->caps->num_channels; in at91_adc_probe_pdata()
976 st->startup_time = pdata->startup_time; in at91_adc_probe_pdata()
977 st->trigger_number = pdata->trigger_number; in at91_adc_probe_pdata()
978 st->trigger_list = pdata->trigger_list; in at91_adc_probe_pdata()
979 st->registers = &st->caps->registers; in at91_adc_probe_pdata()
980 st->touchscreen_type = pdata->touchscreen_type; in at91_adc_probe_pdata()
993 struct at91_adc_state *st = input_get_drvdata(dev); in atmel_ts_open() local
995 if (st->caps->has_tsmr) in atmel_ts_open()
996 at91_adc_writel(st, AT91_ADC_IER, AT91_ADC_IER_PEN); in atmel_ts_open()
998 at91_adc_writel(st, AT91_ADC_IER, AT91RL_ADC_IER_PEN); in atmel_ts_open()
1004 struct at91_adc_state *st = input_get_drvdata(dev); in atmel_ts_close() local
1006 if (st->caps->has_tsmr) in atmel_ts_close()
1007 at91_adc_writel(st, AT91_ADC_IDR, AT91_ADC_IER_PEN); in atmel_ts_close()
1009 at91_adc_writel(st, AT91_ADC_IDR, AT91RL_ADC_IER_PEN); in atmel_ts_close()
1012 static int at91_ts_hw_init(struct at91_adc_state *st, u32 adc_clk_khz) in at91_ts_hw_init() argument
1021 st->ts_pendbc = round_up(TOUCH_PEN_DETECT_DEBOUNCE_US * adc_clk_khz / in at91_ts_hw_init()
1024 while (st->ts_pendbc >> ++i) in at91_ts_hw_init()
1026 if (abs(st->ts_pendbc - (1 << i)) < abs(st->ts_pendbc - (1 << (i - 1)))) in at91_ts_hw_init()
1027 st->ts_pendbc = i; in at91_ts_hw_init()
1029 st->ts_pendbc = i - 1; in at91_ts_hw_init()
1031 if (!st->caps->has_tsmr) { in at91_ts_hw_init()
1032 reg = at91_adc_readl(st, AT91_ADC_MR); in at91_ts_hw_init()
1035 reg |= AT91_ADC_PENDBC_(st->ts_pendbc) & AT91_ADC_PENDBC; in at91_ts_hw_init()
1036 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_ts_hw_init()
1039 at91_adc_writel(st, AT91_ADC_TSR, reg); in at91_ts_hw_init()
1041 st->ts_sample_period_val = round_up((TOUCH_SAMPLE_PERIOD_US_RL * in at91_ts_hw_init()
1047 if (st->touchscreen_type == ATMEL_ADC_TOUCHSCREEN_4WIRE) in at91_ts_hw_init()
1052 reg |= AT91_ADC_TSMR_TSAV_(st->caps->ts_filter_average) in at91_ts_hw_init()
1054 reg |= AT91_ADC_TSMR_PENDBC_(st->ts_pendbc) & AT91_ADC_TSMR_PENDBC; in at91_ts_hw_init()
1059 at91_adc_writel(st, AT91_ADC_TSMR, reg); in at91_ts_hw_init()
1066 at91_adc_writel(st, AT91_ADC_ACR, st->caps->ts_pen_detect_sensitivity in at91_ts_hw_init()
1070 st->ts_sample_period_val = round_up((TOUCH_SAMPLE_PERIOD_US * in at91_ts_hw_init()
1076 static int at91_ts_register(struct at91_adc_state *st, in at91_ts_register() argument
1080 struct iio_dev *idev = iio_priv_to_dev(st); in at91_ts_register()
1098 if (st->caps->has_tsmr) { in at91_ts_register()
1105 if (st->touchscreen_type != ATMEL_ADC_TOUCHSCREEN_4WIRE) { in at91_ts_register()
1118 st->ts_input = input; in at91_ts_register()
1119 input_set_drvdata(input, st); in at91_ts_register()
1128 input_free_device(st->ts_input); in at91_ts_register()
1132 static void at91_ts_unregister(struct at91_adc_state *st) in at91_ts_unregister() argument
1134 input_unregister_device(st->ts_input); in at91_ts_unregister()
1142 struct at91_adc_state *st; in at91_adc_probe() local
1150 st = iio_priv(idev); in at91_adc_probe()
1153 ret = at91_adc_probe_dt(st, pdev); in at91_adc_probe()
1155 ret = at91_adc_probe_pdata(st, pdev); in at91_adc_probe()
1169 st->irq = platform_get_irq(pdev, 0); in at91_adc_probe()
1170 if (st->irq < 0) { in at91_adc_probe()
1177 st->reg_base = devm_ioremap_resource(&pdev->dev, res); in at91_adc_probe()
1178 if (IS_ERR(st->reg_base)) { in at91_adc_probe()
1179 return PTR_ERR(st->reg_base); in at91_adc_probe()
1185 at91_adc_writel(st, AT91_ADC_CR, AT91_ADC_SWRST); in at91_adc_probe()
1186 at91_adc_writel(st, AT91_ADC_IDR, 0xFFFFFFFF); in at91_adc_probe()
1188 if (st->caps->has_tsmr) in at91_adc_probe()
1189 ret = request_irq(st->irq, at91_adc_9x5_interrupt, 0, in at91_adc_probe()
1192 ret = request_irq(st->irq, at91_adc_rl_interrupt, 0, in at91_adc_probe()
1199 st->clk = devm_clk_get(&pdev->dev, "adc_clk"); in at91_adc_probe()
1200 if (IS_ERR(st->clk)) { in at91_adc_probe()
1202 ret = PTR_ERR(st->clk); in at91_adc_probe()
1206 ret = clk_prepare_enable(st->clk); in at91_adc_probe()
1213 st->adc_clk = devm_clk_get(&pdev->dev, "adc_op_clk"); in at91_adc_probe()
1214 if (IS_ERR(st->adc_clk)) { in at91_adc_probe()
1216 ret = PTR_ERR(st->adc_clk); in at91_adc_probe()
1220 ret = clk_prepare_enable(st->adc_clk); in at91_adc_probe()
1232 mstrclk = clk_get_rate(st->clk); in at91_adc_probe()
1233 adc_clk = clk_get_rate(st->adc_clk); in at91_adc_probe()
1241 if (!st->startup_time) { in at91_adc_probe()
1246 ticks = (*st->caps->calc_startup_ticks)(st->startup_time, adc_clk_khz); in at91_adc_probe()
1253 if (st->sample_hold_time > 0) in at91_adc_probe()
1254 shtim = round_up((st->sample_hold_time * adc_clk_khz / 1000) in at91_adc_probe()
1259 reg = AT91_ADC_PRESCAL_(prsc) & st->registers->mr_prescal_mask; in at91_adc_probe()
1260 reg |= AT91_ADC_STARTUP_(ticks) & st->registers->mr_startup_mask; in at91_adc_probe()
1261 if (st->low_res) in at91_adc_probe()
1263 if (st->sleep_mode) in at91_adc_probe()
1266 at91_adc_writel(st, AT91_ADC_MR, reg); in at91_adc_probe()
1275 init_waitqueue_head(&st->wq_data_avail); in at91_adc_probe()
1276 mutex_init(&st->lock); in at91_adc_probe()
1283 if (!st->touchscreen_type) { in at91_adc_probe()
1297 ret = at91_ts_register(st, pdev); in at91_adc_probe()
1301 at91_ts_hw_init(st, adc_clk_khz); in at91_adc_probe()
1313 if (!st->touchscreen_type) { in at91_adc_probe()
1317 at91_ts_unregister(st); in at91_adc_probe()
1320 clk_disable_unprepare(st->adc_clk); in at91_adc_probe()
1322 clk_disable_unprepare(st->clk); in at91_adc_probe()
1324 free_irq(st->irq, idev); in at91_adc_probe()
1331 struct at91_adc_state *st = iio_priv(idev); in at91_adc_remove() local
1334 if (!st->touchscreen_type) { in at91_adc_remove()
1338 at91_ts_unregister(st); in at91_adc_remove()
1340 clk_disable_unprepare(st->adc_clk); in at91_adc_remove()
1341 clk_disable_unprepare(st->clk); in at91_adc_remove()
1342 free_irq(st->irq, idev); in at91_adc_remove()