Lines Matching +full:shutdown +full:- +full:threshold +full:- +full:microamp
1 // SPDX-License-Identifier: GPL-2.0-only
3 * palmas-adc.c -- TI PALMAS GPADC.
27 #define MOD_NAME "palmas-gpadc"
30 #define PALMAS_GPADC_TRIMINVALID -1
80 * struct palmas_gpadc - the palmas_gpadc structure
94 * This is the palmas_gpadc structure to store run-time information
133 * Shutdown the GPADC AUTO conversion using
143 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_disable_auto_conversion()
148 dev_err(adc->dev, "GPADC_CTRL1 update failed: %d\n", ret); in palmas_disable_auto_conversion()
152 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_disable_auto_conversion()
158 dev_err(adc->dev, "AUTO_CTRL update failed: %d\n", ret); in palmas_disable_auto_conversion()
164 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_disable_auto_conversion()
168 dev_err(adc->dev, "GPADC_CTRL1 update failed: %d\n", ret); in palmas_disable_auto_conversion()
177 complete(&adc->conv_completion); in palmas_gpadc_irq()
186 dev_dbg(adc->dev, "Threshold interrupt %d occurs\n", irq); in palmas_gpadc_irq_auto()
198 ret = palmas_update_bits(adc->palmas, PALMAS_INTERRUPT_BASE, in palmas_gpadc_start_mask_interrupt()
202 ret = palmas_update_bits(adc->palmas, PALMAS_INTERRUPT_BASE, in palmas_gpadc_start_mask_interrupt()
207 dev_err(adc->dev, "GPADC INT MASK update failed: %d\n", ret); in palmas_gpadc_start_mask_interrupt()
219 val = (adc->extended_delay in palmas_gpadc_enable()
221 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_gpadc_enable()
225 dev_err(adc->dev, "RT_CTRL update failed: %d\n", ret); in palmas_gpadc_enable()
232 val = (adc->ch0_current in palmas_gpadc_enable()
234 val |= (adc->ch3_current in palmas_gpadc_enable()
237 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_gpadc_enable()
240 dev_err(adc->dev, in palmas_gpadc_enable()
248 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_gpadc_enable()
251 dev_err(adc->dev, "SW_SELECT update failed: %d\n", ret); in palmas_gpadc_enable()
255 ret = palmas_write(adc->palmas, PALMAS_GPADC_BASE, in palmas_gpadc_enable()
258 dev_err(adc->dev, "SW_SELECT write failed: %d\n", ret); in palmas_gpadc_enable()
260 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_gpadc_enable()
264 dev_err(adc->dev, "CTRL1 update failed: %d\n", ret); in palmas_gpadc_enable()
296 int x1 = adc->adc_info[adc_chan].x1; in palmas_gpadc_calibrate()
297 int x2 = adc->adc_info[adc_chan].x2; in palmas_gpadc_calibrate()
298 int v1 = adc->adc_info[adc_chan].v1; in palmas_gpadc_calibrate()
299 int v2 = adc->adc_info[adc_chan].v2; in palmas_gpadc_calibrate()
301 ret = palmas_read(adc->palmas, PALMAS_TRIM_GPADC_BASE, in palmas_gpadc_calibrate()
302 adc->adc_info[adc_chan].trim1_reg, &d1); in palmas_gpadc_calibrate()
304 dev_err(adc->dev, "TRIM read failed: %d\n", ret); in palmas_gpadc_calibrate()
308 ret = palmas_read(adc->palmas, PALMAS_TRIM_GPADC_BASE, in palmas_gpadc_calibrate()
309 adc->adc_info[adc_chan].trim2_reg, &d2); in palmas_gpadc_calibrate()
311 dev_err(adc->dev, "TRIM read failed: %d\n", ret); in palmas_gpadc_calibrate()
316 k = (1000 + (1000 * (d2 - d1)) / (x2 - x1)); in palmas_gpadc_calibrate()
319 gain = ((v2 - v1) * 1000) / (x2 - x1); in palmas_gpadc_calibrate()
321 adc->adc_info[adc_chan].gain_error = k; in palmas_gpadc_calibrate()
322 adc->adc_info[adc_chan].gain = gain; in palmas_gpadc_calibrate()
324 adc->adc_info[adc_chan].offset = (d1 * 1000) - ((k - 1000) * x1); in palmas_gpadc_calibrate()
335 init_completion(&adc->conv_completion); in palmas_gpadc_start_conversion()
336 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_gpadc_start_conversion()
341 dev_err(adc->dev, "SELECT_SW_START write failed: %d\n", ret); in palmas_gpadc_start_conversion()
345 ret = wait_for_completion_timeout(&adc->conv_completion, in palmas_gpadc_start_conversion()
348 dev_err(adc->dev, "conversion not completed\n"); in palmas_gpadc_start_conversion()
349 return -ETIMEDOUT; in palmas_gpadc_start_conversion()
352 ret = palmas_bulk_read(adc->palmas, PALMAS_GPADC_BASE, in palmas_gpadc_start_conversion()
355 dev_err(adc->dev, "SW_CONV0_LSB read failed: %d\n", ret); in palmas_gpadc_start_conversion()
367 if (!adc->adc_info[adc_chan].is_uncalibrated) in palmas_gpadc_get_calibrated_code()
368 val = (val*1000 - adc->adc_info[adc_chan].offset) / in palmas_gpadc_get_calibrated_code()
369 adc->adc_info[adc_chan].gain_error; in palmas_gpadc_get_calibrated_code()
372 dev_err(adc->dev, "Mismatch with calibration\n"); in palmas_gpadc_get_calibrated_code()
376 val = (val * adc->adc_info[adc_chan].gain) / 1000; in palmas_gpadc_get_calibrated_code()
385 int adc_chan = chan->channel; in palmas_gpadc_read_raw()
389 return -EINVAL; in palmas_gpadc_read_raw()
391 mutex_lock(&indio_dev->mlock); in palmas_gpadc_read_raw()
402 dev_err(adc->dev, in palmas_gpadc_read_raw()
417 mutex_unlock(&indio_dev->mlock); in palmas_gpadc_read_raw()
422 mutex_unlock(&indio_dev->mlock); in palmas_gpadc_read_raw()
463 struct device_node *np = pdev->dev.of_node; in palmas_gpadc_get_adc_dt_data()
468 gp_data = devm_kzalloc(&pdev->dev, sizeof(*gp_data), GFP_KERNEL); in palmas_gpadc_get_adc_dt_data()
470 return -ENOMEM; in palmas_gpadc_get_adc_dt_data()
472 ret = of_property_read_u32(np, "ti,channel0-current-microamp", &pval); in palmas_gpadc_get_adc_dt_data()
474 gp_data->ch0_current = pval; in palmas_gpadc_get_adc_dt_data()
476 ret = of_property_read_u32(np, "ti,channel3-current-microamp", &pval); in palmas_gpadc_get_adc_dt_data()
478 gp_data->ch3_current = pval; in palmas_gpadc_get_adc_dt_data()
480 gp_data->extended_delay = of_property_read_bool(np, in palmas_gpadc_get_adc_dt_data()
481 "ti,enable-extended-delay"); in palmas_gpadc_get_adc_dt_data()
496 pdata = dev_get_platdata(pdev->dev.parent); in palmas_gpadc_probe()
498 if (pdata && pdata->gpadc_pdata) in palmas_gpadc_probe()
499 gpadc_pdata = pdata->gpadc_pdata; in palmas_gpadc_probe()
501 if (!gpadc_pdata && pdev->dev.of_node) { in palmas_gpadc_probe()
507 return -EINVAL; in palmas_gpadc_probe()
509 indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc)); in palmas_gpadc_probe()
511 dev_err(&pdev->dev, "iio_device_alloc failed\n"); in palmas_gpadc_probe()
512 return -ENOMEM; in palmas_gpadc_probe()
516 adc->dev = &pdev->dev; in palmas_gpadc_probe()
517 adc->palmas = dev_get_drvdata(pdev->dev.parent); in palmas_gpadc_probe()
518 adc->adc_info = palmas_gpadc_info; in palmas_gpadc_probe()
519 init_completion(&adc->conv_completion); in palmas_gpadc_probe()
520 dev_set_drvdata(&pdev->dev, indio_dev); in palmas_gpadc_probe()
522 adc->auto_conversion_period = gpadc_pdata->auto_conversion_period_ms; in palmas_gpadc_probe()
523 adc->irq = palmas_irq_get_virq(adc->palmas, PALMAS_GPADC_EOC_SW_IRQ); in palmas_gpadc_probe()
524 if (adc->irq < 0) { in palmas_gpadc_probe()
525 dev_err(adc->dev, in palmas_gpadc_probe()
526 "get virq failed: %d\n", adc->irq); in palmas_gpadc_probe()
527 ret = adc->irq; in palmas_gpadc_probe()
530 ret = request_threaded_irq(adc->irq, NULL, in palmas_gpadc_probe()
532 IRQF_ONESHOT, dev_name(adc->dev), in palmas_gpadc_probe()
535 dev_err(adc->dev, in palmas_gpadc_probe()
536 "request irq %d failed: %d\n", adc->irq, ret); in palmas_gpadc_probe()
540 if (gpadc_pdata->adc_wakeup1_data) { in palmas_gpadc_probe()
541 memcpy(&adc->wakeup1_data, gpadc_pdata->adc_wakeup1_data, in palmas_gpadc_probe()
542 sizeof(adc->wakeup1_data)); in palmas_gpadc_probe()
543 adc->wakeup1_enable = true; in palmas_gpadc_probe()
544 adc->irq_auto_0 = platform_get_irq(pdev, 1); in palmas_gpadc_probe()
545 ret = request_threaded_irq(adc->irq_auto_0, NULL, in palmas_gpadc_probe()
548 "palmas-adc-auto-0", adc); in palmas_gpadc_probe()
550 dev_err(adc->dev, "request auto0 irq %d failed: %d\n", in palmas_gpadc_probe()
551 adc->irq_auto_0, ret); in palmas_gpadc_probe()
556 if (gpadc_pdata->adc_wakeup2_data) { in palmas_gpadc_probe()
557 memcpy(&adc->wakeup2_data, gpadc_pdata->adc_wakeup2_data, in palmas_gpadc_probe()
558 sizeof(adc->wakeup2_data)); in palmas_gpadc_probe()
559 adc->wakeup2_enable = true; in palmas_gpadc_probe()
560 adc->irq_auto_1 = platform_get_irq(pdev, 2); in palmas_gpadc_probe()
561 ret = request_threaded_irq(adc->irq_auto_1, NULL, in palmas_gpadc_probe()
564 "palmas-adc-auto-1", adc); in palmas_gpadc_probe()
566 dev_err(adc->dev, "request auto1 irq %d failed: %d\n", in palmas_gpadc_probe()
567 adc->irq_auto_1, ret); in palmas_gpadc_probe()
573 if (gpadc_pdata->ch0_current <= 1) in palmas_gpadc_probe()
574 adc->ch0_current = PALMAS_ADC_CH0_CURRENT_SRC_0; in palmas_gpadc_probe()
575 else if (gpadc_pdata->ch0_current <= 5) in palmas_gpadc_probe()
576 adc->ch0_current = PALMAS_ADC_CH0_CURRENT_SRC_5; in palmas_gpadc_probe()
577 else if (gpadc_pdata->ch0_current <= 15) in palmas_gpadc_probe()
578 adc->ch0_current = PALMAS_ADC_CH0_CURRENT_SRC_15; in palmas_gpadc_probe()
580 adc->ch0_current = PALMAS_ADC_CH0_CURRENT_SRC_20; in palmas_gpadc_probe()
583 if (gpadc_pdata->ch3_current <= 1) in palmas_gpadc_probe()
584 adc->ch3_current = PALMAS_ADC_CH3_CURRENT_SRC_0; in palmas_gpadc_probe()
585 else if (gpadc_pdata->ch3_current <= 10) in palmas_gpadc_probe()
586 adc->ch3_current = PALMAS_ADC_CH3_CURRENT_SRC_10; in palmas_gpadc_probe()
587 else if (gpadc_pdata->ch3_current <= 400) in palmas_gpadc_probe()
588 adc->ch3_current = PALMAS_ADC_CH3_CURRENT_SRC_400; in palmas_gpadc_probe()
590 adc->ch3_current = PALMAS_ADC_CH3_CURRENT_SRC_800; in palmas_gpadc_probe()
592 adc->extended_delay = gpadc_pdata->extended_delay; in palmas_gpadc_probe()
594 indio_dev->name = MOD_NAME; in palmas_gpadc_probe()
595 indio_dev->info = &palmas_gpadc_iio_info; in palmas_gpadc_probe()
596 indio_dev->modes = INDIO_DIRECT_MODE; in palmas_gpadc_probe()
597 indio_dev->channels = palmas_gpadc_iio_channel; in palmas_gpadc_probe()
598 indio_dev->num_channels = ARRAY_SIZE(palmas_gpadc_iio_channel); in palmas_gpadc_probe()
602 dev_err(adc->dev, "iio_device_register() failed: %d\n", ret); in palmas_gpadc_probe()
606 device_set_wakeup_capable(&pdev->dev, 1); in palmas_gpadc_probe()
608 if (!(adc->adc_info[i].is_uncalibrated)) in palmas_gpadc_probe()
612 if (adc->wakeup1_enable || adc->wakeup2_enable) in palmas_gpadc_probe()
613 device_wakeup_enable(&pdev->dev); in palmas_gpadc_probe()
618 if (gpadc_pdata->adc_wakeup2_data) in palmas_gpadc_probe()
619 free_irq(adc->irq_auto_1, adc); in palmas_gpadc_probe()
621 if (gpadc_pdata->adc_wakeup1_data) in palmas_gpadc_probe()
622 free_irq(adc->irq_auto_0, adc); in palmas_gpadc_probe()
624 free_irq(adc->irq, adc); in palmas_gpadc_probe()
631 struct iio_dev *indio_dev = dev_to_iio_dev(&pdev->dev); in palmas_gpadc_remove()
634 if (adc->wakeup1_enable || adc->wakeup2_enable) in palmas_gpadc_remove()
635 device_wakeup_disable(&pdev->dev); in palmas_gpadc_remove()
637 free_irq(adc->irq, adc); in palmas_gpadc_remove()
638 if (adc->wakeup1_enable) in palmas_gpadc_remove()
639 free_irq(adc->irq_auto_0, adc); in palmas_gpadc_remove()
640 if (adc->wakeup2_enable) in palmas_gpadc_remove()
641 free_irq(adc->irq_auto_1, adc); in palmas_gpadc_remove()
655 adc_period = adc->auto_conversion_period; in palmas_adc_wakeup_configure()
661 i--; in palmas_adc_wakeup_configure()
663 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_configure()
668 dev_err(adc->dev, "AUTO_CTRL write failed: %d\n", ret); in palmas_adc_wakeup_configure()
673 if (adc->wakeup1_enable) { in palmas_adc_wakeup_configure()
676 ch0 = adc->wakeup1_data.adc_channel_number; in palmas_adc_wakeup_configure()
678 if (adc->wakeup1_data.adc_high_threshold > 0) { in palmas_adc_wakeup_configure()
679 thres = adc->wakeup1_data.adc_high_threshold; in palmas_adc_wakeup_configure()
682 thres = adc->wakeup1_data.adc_low_threshold; in palmas_adc_wakeup_configure()
686 ret = palmas_write(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_configure()
689 dev_err(adc->dev, in palmas_adc_wakeup_configure()
694 ret = palmas_write(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_configure()
698 dev_err(adc->dev, in palmas_adc_wakeup_configure()
704 if (adc->wakeup2_enable) { in palmas_adc_wakeup_configure()
707 ch1 = adc->wakeup2_data.adc_channel_number; in palmas_adc_wakeup_configure()
709 if (adc->wakeup2_data.adc_high_threshold > 0) { in palmas_adc_wakeup_configure()
710 thres = adc->wakeup2_data.adc_high_threshold; in palmas_adc_wakeup_configure()
713 thres = adc->wakeup2_data.adc_low_threshold; in palmas_adc_wakeup_configure()
717 ret = palmas_write(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_configure()
720 dev_err(adc->dev, in palmas_adc_wakeup_configure()
725 ret = palmas_write(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_configure()
729 dev_err(adc->dev, in palmas_adc_wakeup_configure()
735 ret = palmas_write(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_configure()
738 dev_err(adc->dev, "AUTO_SELECT write failed: %d\n", ret); in palmas_adc_wakeup_configure()
742 ret = palmas_update_bits(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_configure()
747 dev_err(adc->dev, "AUTO_CTRL write failed: %d\n", ret); in palmas_adc_wakeup_configure()
756 ret = palmas_write(adc->palmas, PALMAS_GPADC_BASE, in palmas_adc_wakeup_reset()
759 dev_err(adc->dev, "AUTO_SELECT write failed: %d\n", ret); in palmas_adc_wakeup_reset()
765 dev_err(adc->dev, "Disable auto conversion failed: %d\n", ret); in palmas_adc_wakeup_reset()
774 int wakeup = adc->wakeup1_enable || adc->wakeup2_enable; in palmas_gpadc_suspend()
784 if (adc->wakeup1_enable) in palmas_gpadc_suspend()
785 enable_irq_wake(adc->irq_auto_0); in palmas_gpadc_suspend()
787 if (adc->wakeup2_enable) in palmas_gpadc_suspend()
788 enable_irq_wake(adc->irq_auto_1); in palmas_gpadc_suspend()
797 int wakeup = adc->wakeup1_enable || adc->wakeup2_enable; in palmas_gpadc_resume()
807 if (adc->wakeup1_enable) in palmas_gpadc_resume()
808 disable_irq_wake(adc->irq_auto_0); in palmas_gpadc_resume()
810 if (adc->wakeup2_enable) in palmas_gpadc_resume()
811 disable_irq_wake(adc->irq_auto_1); in palmas_gpadc_resume()
823 { .compatible = "ti,palmas-gpadc", },
841 MODULE_ALIAS("platform:palmas-gpadc");