iio/adc/ti-ads7950.c

26 #include <linux/spi/spi.h>
67 	struct spi_device	*spi;
73 	/* Lock to protect the spi xfer buffers */
280  * ti_ads7950_update_scan_mode() setup the spi transfer buffer for the new
312 	ret = spi_sync(st->spi, &st->ring_msg);
335 	ret = spi_sync(st->spi, &st->scan_single_msg);
419 	spi_sync(st->spi, &st->scan_single_msg);
440 	ret = spi_sync(st->spi, &st->scan_single_msg);
449 	ret = spi_sync(st->spi, &st->scan_single_msg);
485 	ret = spi_sync(st->spi, &st->scan_single_msg);
517 	ret = spi_sync(st->spi, &st->scan_single_msg);
524 	ret = spi_sync(st->spi, &st->scan_single_msg);
532 static int ti_ads7950_probe(struct spi_device *spi)
539 	spi->bits_per_word = 16;
540 	spi->mode |= SPI_CS_WORD;
541 	ret = spi_setup(spi);
543 		dev_err(&spi->dev, "Error in spi setup\n");
547 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
553 	spi_set_drvdata(spi, indio_dev);
555 	st->spi = spi;
557 	info = &ti_ads7950_chip_info[spi_get_device_id(spi)->driver_data];
559 	indio_dev->name = spi_get_device_id(spi)->name;
565 	/* build spi ring message */
596 	if (ACPI_COMPANION(&spi->dev))
601 	st->reg = devm_regulator_get(&spi->dev, "vref");
603 		ret = dev_err_probe(&spi->dev, PTR_ERR(st->reg),
610 		dev_err(&spi->dev, "Failed to enable regulator \"vref\"\n");
617 		dev_err(&spi->dev, "Failed to setup triggered buffer\n");
623 		dev_err(&spi->dev, "Failed to init adc chip\n");
629 		dev_err(&spi->dev, "Failed to register iio device\n");
634 	st->chip.label = dev_name(&st->spi->dev);
635 	st->chip.parent = &st->spi->dev;
648 		dev_err(&spi->dev, "Failed to init GPIOs\n");
666 static void ti_ads7950_remove(struct spi_device *spi)
668 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
693 MODULE_DEVICE_TABLE(spi, ti_ads7950_id);