1 // SPDX-License-Identifier: GPL-2.0-or-later
12 #include <linux/gpio/consumer.h>
14 #include <linux/regulator/consumer.h>
18 #include <linux/iio/iio.h>
19 #include <linux/iio/buffer.h>
20 #include <linux/iio/trigger.h>
21 #include <linux/iio/trigger_consumer.h>
22 #include <linux/iio/triggered_buffer.h>
70 	struct iio_dev *indio_dev = pf->indio_dev;  in ad7766_trigger_handler()
74 	ret = spi_sync(ad7766->spi, &ad7766->msg);  in ad7766_trigger_handler()
78 	iio_push_to_buffers_with_timestamp(indio_dev, ad7766->data,  in ad7766_trigger_handler()
79 		pf->timestamp);  in ad7766_trigger_handler()
81 	iio_trigger_notify_done(indio_dev->trig);  in ad7766_trigger_handler()
91 	ret = regulator_bulk_enable(ARRAY_SIZE(ad7766->reg), ad7766->reg);  in ad7766_preenable()
93 		dev_err(&ad7766->spi->dev, "Failed to enable supplies: %d\n",  in ad7766_preenable()
98 	ret = clk_prepare_enable(ad7766->mclk);  in ad7766_preenable()
100 		dev_err(&ad7766->spi->dev, "Failed to enable MCLK: %d\n", ret);  in ad7766_preenable()
101 		regulator_bulk_disable(ARRAY_SIZE(ad7766->reg), ad7766->reg);  in ad7766_preenable()
105 	gpiod_set_value(ad7766->pd_gpio, 0);  in ad7766_preenable()
114 	gpiod_set_value(ad7766->pd_gpio, 1);  in ad7766_postdisable()
122 	clk_disable_unprepare(ad7766->mclk);  in ad7766_postdisable()
123 	regulator_bulk_disable(ARRAY_SIZE(ad7766->reg), ad7766->reg);  in ad7766_postdisable()
132 	struct regulator *vref = ad7766->reg[AD7766_SUPPLY_VREF].consumer;  in ad7766_read_raw()
141 		*val2 = chan->scan_type.realbits;  in ad7766_read_raw()
144 		*val = clk_get_rate(ad7766->mclk) /  in ad7766_read_raw()
145 			ad7766->chip_info->decimation_factor;  in ad7766_read_raw()
148 	return -EINVAL;  in ad7766_read_raw()
199 		enable_irq(ad7766->spi->irq);  in ad7766_set_trigger_state()
201 		disable_irq(ad7766->spi->irq);  in ad7766_set_trigger_state()
218 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*ad7766));  in ad7766_probe()
220 		return -ENOMEM;  in ad7766_probe()
223 	ad7766->chip_info = &ad7766_chip_info[id->driver_data];  in ad7766_probe()
225 	ad7766->mclk = devm_clk_get(&spi->dev, "mclk");  in ad7766_probe()
226 	if (IS_ERR(ad7766->mclk))  in ad7766_probe()
227 		return PTR_ERR(ad7766->mclk);  in ad7766_probe()
229 	ad7766->reg[AD7766_SUPPLY_AVDD].supply = "avdd";  in ad7766_probe()
230 	ad7766->reg[AD7766_SUPPLY_DVDD].supply = "dvdd";  in ad7766_probe()
231 	ad7766->reg[AD7766_SUPPLY_VREF].supply = "vref";  in ad7766_probe()
233 	ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(ad7766->reg),  in ad7766_probe()
234 		ad7766->reg);  in ad7766_probe()
238 	ad7766->pd_gpio = devm_gpiod_get_optional(&spi->dev, "powerdown",  in ad7766_probe()
240 	if (IS_ERR(ad7766->pd_gpio))  in ad7766_probe()
241 		return PTR_ERR(ad7766->pd_gpio);  in ad7766_probe()
243 	indio_dev->name = spi_get_device_id(spi)->name;  in ad7766_probe()
244 	indio_dev->modes = INDIO_DIRECT_MODE;  in ad7766_probe()
245 	indio_dev->channels = ad7766_channels;  in ad7766_probe()
246 	indio_dev->num_channels = ARRAY_SIZE(ad7766_channels);  in ad7766_probe()
247 	indio_dev->info = &ad7766_info;  in ad7766_probe()
249 	if (spi->irq > 0) {  in ad7766_probe()
250 		ad7766->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",  in ad7766_probe()
251 			indio_dev->name, indio_dev->id);  in ad7766_probe()
252 		if (!ad7766->trig)  in ad7766_probe()
253 			return -ENOMEM;  in ad7766_probe()
255 		ad7766->trig->ops = &ad7766_trigger_ops;  in ad7766_probe()
256 		ad7766->trig->dev.parent = &spi->dev;  in ad7766_probe()
257 		iio_trigger_set_drvdata(ad7766->trig, ad7766);  in ad7766_probe()
259 		ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,  in ad7766_probe()
260 			IRQF_TRIGGER_FALLING, dev_name(&spi->dev),  in ad7766_probe()
261 			ad7766->trig);  in ad7766_probe()
270 		disable_irq(spi->irq);  in ad7766_probe()
272 		ret = devm_iio_trigger_register(&spi->dev, ad7766->trig);  in ad7766_probe()
279 	ad7766->spi = spi;  in ad7766_probe()
282 	ad7766->xfer.rx_buf = &ad7766->data[1];  in ad7766_probe()
283 	ad7766->xfer.len = 3;  in ad7766_probe()
285 	spi_message_init(&ad7766->msg);  in ad7766_probe()
286 	spi_message_add_tail(&ad7766->xfer, &ad7766->msg);  in ad7766_probe()
288 	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,  in ad7766_probe()
294 	ret = devm_iio_device_register(&spi->dev, indio_dev);  in ad7766_probe()
302 	{"ad7766-1", ID_AD7766_1},
303 	{"ad7766-2", ID_AD7766_2},
305 	{"ad7767-1", ID_AD7766_1},
306 	{"ad7767-2", ID_AD7766_2},
320 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");