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>
69 	struct iio_dev *indio_dev = pf->indio_dev;  in ad7766_trigger_handler()
73 	ret = spi_sync(ad7766->spi, &ad7766->msg);  in ad7766_trigger_handler()
77 	iio_push_to_buffers_with_timestamp(indio_dev, ad7766->data,  in ad7766_trigger_handler()
78 		pf->timestamp);  in ad7766_trigger_handler()
80 	iio_trigger_notify_done(indio_dev->trig);  in ad7766_trigger_handler()
90 	ret = regulator_bulk_enable(ARRAY_SIZE(ad7766->reg), ad7766->reg);  in ad7766_preenable()
92 		dev_err(&ad7766->spi->dev, "Failed to enable supplies: %d\n",  in ad7766_preenable()
97 	ret = clk_prepare_enable(ad7766->mclk);  in ad7766_preenable()
99 		dev_err(&ad7766->spi->dev, "Failed to enable MCLK: %d\n", ret);  in ad7766_preenable()
100 		regulator_bulk_disable(ARRAY_SIZE(ad7766->reg), ad7766->reg);  in ad7766_preenable()
104 	gpiod_set_value(ad7766->pd_gpio, 0);  in ad7766_preenable()
113 	gpiod_set_value(ad7766->pd_gpio, 1);  in ad7766_postdisable()
121 	clk_disable_unprepare(ad7766->mclk);  in ad7766_postdisable()
122 	regulator_bulk_disable(ARRAY_SIZE(ad7766->reg), ad7766->reg);  in ad7766_postdisable()
131 	struct regulator *vref = ad7766->reg[AD7766_SUPPLY_VREF].consumer;  in ad7766_read_raw()
140 		*val2 = chan->scan_type.realbits;  in ad7766_read_raw()
143 		*val = clk_get_rate(ad7766->mclk) /  in ad7766_read_raw()
144 			ad7766->chip_info->decimation_factor;  in ad7766_read_raw()
147 	return -EINVAL;  in ad7766_read_raw()
198 		enable_irq(ad7766->spi->irq);  in ad7766_set_trigger_state()
200 		disable_irq(ad7766->spi->irq);  in ad7766_set_trigger_state()
217 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*ad7766));  in ad7766_probe()
219 		return -ENOMEM;  in ad7766_probe()
222 	ad7766->chip_info = &ad7766_chip_info[id->driver_data];  in ad7766_probe()
224 	ad7766->mclk = devm_clk_get(&spi->dev, "mclk");  in ad7766_probe()
225 	if (IS_ERR(ad7766->mclk))  in ad7766_probe()
226 		return PTR_ERR(ad7766->mclk);  in ad7766_probe()
228 	ad7766->reg[AD7766_SUPPLY_AVDD].supply = "avdd";  in ad7766_probe()
229 	ad7766->reg[AD7766_SUPPLY_DVDD].supply = "dvdd";  in ad7766_probe()
230 	ad7766->reg[AD7766_SUPPLY_VREF].supply = "vref";  in ad7766_probe()
232 	ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(ad7766->reg),  in ad7766_probe()
233 		ad7766->reg);  in ad7766_probe()
237 	ad7766->pd_gpio = devm_gpiod_get_optional(&spi->dev, "powerdown",  in ad7766_probe()
239 	if (IS_ERR(ad7766->pd_gpio))  in ad7766_probe()
240 		return PTR_ERR(ad7766->pd_gpio);  in ad7766_probe()
242 	indio_dev->name = spi_get_device_id(spi)->name;  in ad7766_probe()
243 	indio_dev->modes = INDIO_DIRECT_MODE;  in ad7766_probe()
244 	indio_dev->channels = ad7766_channels;  in ad7766_probe()
245 	indio_dev->num_channels = ARRAY_SIZE(ad7766_channels);  in ad7766_probe()
246 	indio_dev->info = &ad7766_info;  in ad7766_probe()
248 	if (spi->irq > 0) {  in ad7766_probe()
249 		ad7766->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",  in ad7766_probe()
250 						      indio_dev->name,  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 		iio_trigger_set_drvdata(ad7766->trig, ad7766);  in ad7766_probe()
263 		ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,  in ad7766_probe()
265 				       dev_name(&spi->dev),  in ad7766_probe()
266 				       ad7766->trig);  in ad7766_probe()
270 		ret = devm_iio_trigger_register(&spi->dev, ad7766->trig);  in ad7766_probe()
275 	ad7766->spi = spi;  in ad7766_probe()
278 	ad7766->xfer.rx_buf = &ad7766->data[1];  in ad7766_probe()
279 	ad7766->xfer.len = 3;  in ad7766_probe()
281 	spi_message_init(&ad7766->msg);  in ad7766_probe()
282 	spi_message_add_tail(&ad7766->xfer, &ad7766->msg);  in ad7766_probe()
284 	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,  in ad7766_probe()
290 	return devm_iio_device_register(&spi->dev, indio_dev);  in ad7766_probe()
295 	{ "ad7766-1", ID_AD7766_1 },
296 	{ "ad7766-2", ID_AD7766_2 },
298 	{ "ad7767-1", ID_AD7766_1 },
299 	{ "ad7767-2", ID_AD7766_2 },
313 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");