iio: adc: ad7923: Add support for the ad7908/ad7918/ad7928 (851644a6) · Commits · 戴 / test

drivers/iio/adc/ad7923.c

+44 −4

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* AD7904/AD7914/AD7923/AD7924 SPI ADC driver
		* AD7904/AD7914/AD7923/AD7924/AD7908/AD7918/AD7928 SPI ADC driver
		*
		* Copyright 2011 Analog Devices Inc (from AD7923 Driver)
		* Copyright 2012 CS Systemes d'Information
		@@ -33,7 +33,6 @@
		#define AD7923_SEQUENCE_PROTECT (2) /* no interrupt write cycle */
		#define AD7923_SEQUENCE_ON (3) /* continuous sequence */

		#define AD7923_MAX_CHAN 4

		#define AD7923_PM_MODE_WRITE(mode) ((mode) << 4) /* write mode */
		#define AD7923_CHANNEL_WRITE(channel) ((channel) << 6) /* write channel */
		@@ -74,6 +73,9 @@ enum ad7923_id {
		AD7904,
		AD7914,
		AD7924,
		AD7908,
		AD7918,
		AD7928
		};

		#define AD7923_V_CHAN(index, bits) \
		@@ -102,9 +104,25 @@ const struct iio_chan_spec name ## _channels[] = { \
		IIO_CHAN_SOFT_TIMESTAMP(4), \
		}

		#define DECLARE_AD7908_CHANNELS(name, bits) \
		const struct iio_chan_spec name ## _channels[] = { \
		AD7923_V_CHAN(0, bits), \
		AD7923_V_CHAN(1, bits), \
		AD7923_V_CHAN(2, bits), \
		AD7923_V_CHAN(3, bits), \
		AD7923_V_CHAN(4, bits), \
		AD7923_V_CHAN(5, bits), \
		AD7923_V_CHAN(6, bits), \
		AD7923_V_CHAN(7, bits), \
		IIO_CHAN_SOFT_TIMESTAMP(8), \
		}

		static DECLARE_AD7923_CHANNELS(ad7904, 8);
		static DECLARE_AD7923_CHANNELS(ad7914, 10);
		static DECLARE_AD7923_CHANNELS(ad7924, 12);
		static DECLARE_AD7908_CHANNELS(ad7908, 8);
		static DECLARE_AD7908_CHANNELS(ad7918, 10);
		static DECLARE_AD7908_CHANNELS(ad7928, 12);

		static const struct ad7923_chip_info ad7923_chip_info[] = {
		[AD7904] = {
		@@ -119,6 +137,18 @@ static const struct ad7923_chip_info ad7923_chip_info[] = {
		.channels = ad7924_channels,
		.num_channels = ARRAY_SIZE(ad7924_channels),
		},
		[AD7908] = {
		.channels = ad7908_channels,
		.num_channels = ARRAY_SIZE(ad7908_channels),
		},
		[AD7918] = {
		.channels = ad7918_channels,
		.num_channels = ARRAY_SIZE(ad7918_channels),
		},
		[AD7928] = {
		.channels = ad7928_channels,
		.num_channels = ARRAY_SIZE(ad7928_channels),
		},
		};

		/**
		@@ -131,7 +161,11 @@ static int ad7923_update_scan_mode(struct iio_dev *indio_dev,
		int i, cmd, len;

		len = 0;
		for_each_set_bit(i, active_scan_mask, AD7923_MAX_CHAN) {
		/*
		* For this driver the last channel is always the software timestamp so
		* skip that one.
		*/
		for_each_set_bit(i, active_scan_mask, indio_dev->num_channels - 1) {
		cmd = AD7923_WRITE_CR \| AD7923_CHANNEL_WRITE(i) \|
		AD7923_SEQUENCE_WRITE(AD7923_SEQUENCE_OFF) \|
		st->settings;
		@@ -344,6 +378,9 @@ static const struct spi_device_id ad7923_id[] = {
		{"ad7914", AD7914},
		{"ad7923", AD7924},
		{"ad7924", AD7924},
		{"ad7908", AD7908},
		{"ad7918", AD7918},
		{"ad7928", AD7928},
		{}
		};
		MODULE_DEVICE_TABLE(spi, ad7923_id);
		@@ -353,6 +390,9 @@ static const struct of_device_id ad7923_of_match[] = {
		{ .compatible = "adi,ad7914", },
		{ .compatible = "adi,ad7923", },
		{ .compatible = "adi,ad7924", },
		{ .compatible = "adi,ad7908", },
		{ .compatible = "adi,ad7918", },
		{ .compatible = "adi,ad7928", },
		{ },
		};
		MODULE_DEVICE_TABLE(of, ad7923_of_match);
		@@ -370,5 +410,5 @@ module_spi_driver(ad7923_driver);

		MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
		MODULE_AUTHOR("Patrick Vasseur <patrick.vasseur@c-s.fr>");
		MODULE_DESCRIPTION("Analog Devices AD7904/AD7914/AD7923/AD7924 ADC");
		MODULE_DESCRIPTION("Analog Devices AD7923 and similar ADC");
		MODULE_LICENSE("GPL v2");

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