diff options
Diffstat (limited to 'drivers/staging/iio/adc/ad7192.c')
| -rw-r--r-- | drivers/staging/iio/adc/ad7192.c | 78 |
1 files changed, 62 insertions, 16 deletions
diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c index 92211039ffa9..f843f19cf675 100644 --- a/drivers/staging/iio/adc/ad7192.c +++ b/drivers/staging/iio/adc/ad7192.c @@ -1,7 +1,7 @@ /* - * AD7190 AD7192 AD7195 SPI ADC driver + * AD7190 AD7192 AD7193 AD7195 SPI ADC driver * - * Copyright 2011-2012 Analog Devices Inc. + * Copyright 2011-2015 Analog Devices Inc. * * Licensed under the GPL-2. */ @@ -92,26 +92,43 @@ #define AD7192_CONF_CHOP BIT(23) /* CHOP enable */ #define AD7192_CONF_REFSEL BIT(20) /* REFIN1/REFIN2 Reference Select */ -#define AD7192_CONF_CHAN(x) (((1 << (x)) & 0xFF) << 8) /* Channel select */ -#define AD7192_CONF_CHAN_MASK (0xFF << 8) /* Channel select mask */ +#define AD7192_CONF_CHAN(x) ((x) << 8) /* Channel select */ +#define AD7192_CONF_CHAN_MASK (0x7FF << 8) /* Channel select mask */ #define AD7192_CONF_BURN BIT(7) /* Burnout current enable */ #define AD7192_CONF_REFDET BIT(6) /* Reference detect enable */ #define AD7192_CONF_BUF BIT(4) /* Buffered Mode Enable */ #define AD7192_CONF_UNIPOLAR BIT(3) /* Unipolar/Bipolar Enable */ #define AD7192_CONF_GAIN(x) ((x) & 0x7) /* Gain Select */ -#define AD7192_CH_AIN1P_AIN2M 0 /* AIN1(+) - AIN2(-) */ -#define AD7192_CH_AIN3P_AIN4M 1 /* AIN3(+) - AIN4(-) */ -#define AD7192_CH_TEMP 2 /* Temp Sensor */ -#define AD7192_CH_AIN2P_AIN2M 3 /* AIN2(+) - AIN2(-) */ -#define AD7192_CH_AIN1 4 /* AIN1 - AINCOM */ -#define AD7192_CH_AIN2 5 /* AIN2 - AINCOM */ -#define AD7192_CH_AIN3 6 /* AIN3 - AINCOM */ -#define AD7192_CH_AIN4 7 /* AIN4 - AINCOM */ +#define AD7192_CH_AIN1P_AIN2M BIT(0) /* AIN1(+) - AIN2(-) */ +#define AD7192_CH_AIN3P_AIN4M BIT(1) /* AIN3(+) - AIN4(-) */ +#define AD7192_CH_TEMP BIT(2) /* Temp Sensor */ +#define AD7192_CH_AIN2P_AIN2M BIT(3) /* AIN2(+) - AIN2(-) */ +#define AD7192_CH_AIN1 BIT(4) /* AIN1 - AINCOM */ +#define AD7192_CH_AIN2 BIT(5) /* AIN2 - AINCOM */ +#define AD7192_CH_AIN3 BIT(6) /* AIN3 - AINCOM */ +#define AD7192_CH_AIN4 BIT(7) /* AIN4 - AINCOM */ + +#define AD7193_CH_AIN1P_AIN2M 0x000 /* AIN1(+) - AIN2(-) */ +#define AD7193_CH_AIN3P_AIN4M 0x001 /* AIN3(+) - AIN4(-) */ +#define AD7193_CH_AIN5P_AIN6M 0x002 /* AIN5(+) - AIN6(-) */ +#define AD7193_CH_AIN7P_AIN8M 0x004 /* AIN7(+) - AIN8(-) */ +#define AD7193_CH_TEMP 0x100 /* Temp senseor */ +#define AD7193_CH_AIN2P_AIN2M 0x200 /* AIN2(+) - AIN2(-) */ +#define AD7193_CH_AIN1 0x401 /* AIN1 - AINCOM */ +#define AD7193_CH_AIN2 0x402 /* AIN2 - AINCOM */ +#define AD7193_CH_AIN3 0x404 /* AIN3 - AINCOM */ +#define AD7193_CH_AIN4 0x408 /* AIN4 - AINCOM */ +#define AD7193_CH_AIN5 0x410 /* AIN5 - AINCOM */ +#define AD7193_CH_AIN6 0x420 /* AIN6 - AINCOM */ +#define AD7193_CH_AIN7 0x440 /* AIN7 - AINCOM */ +#define AD7193_CH_AIN8 0x480 /* AIN7 - AINCOM */ +#define AD7193_CH_AINCOM 0x600 /* AINCOM - AINCOM */ /* ID Register Bit Designations (AD7192_REG_ID) */ #define ID_AD7190 0x4 #define ID_AD7192 0x0 +#define ID_AD7193 0x2 #define ID_AD7195 0x6 #define AD7192_ID_MASK 0x0F @@ -236,7 +253,7 @@ static int ad7192_setup(struct ad7192_state *st, st->mclk = pdata->ext_clk_hz; else st->mclk = AD7192_INT_FREQ_MHZ; - break; + break; default: ret = -EINVAL; goto out; @@ -607,6 +624,24 @@ static const struct iio_chan_spec ad7192_channels[] = { IIO_CHAN_SOFT_TIMESTAMP(8), }; +static const struct iio_chan_spec ad7193_channels[] = { + AD_SD_DIFF_CHANNEL(0, 1, 2, AD7193_CH_AIN1P_AIN2M, 24, 32, 0), + AD_SD_DIFF_CHANNEL(1, 3, 4, AD7193_CH_AIN3P_AIN4M, 24, 32, 0), + AD_SD_DIFF_CHANNEL(2, 5, 6, AD7193_CH_AIN5P_AIN6M, 24, 32, 0), + AD_SD_DIFF_CHANNEL(3, 7, 8, AD7193_CH_AIN7P_AIN8M, 24, 32, 0), + AD_SD_TEMP_CHANNEL(4, AD7193_CH_TEMP, 24, 32, 0), + AD_SD_SHORTED_CHANNEL(5, 2, AD7193_CH_AIN2P_AIN2M, 24, 32, 0), + AD_SD_CHANNEL(6, 1, AD7193_CH_AIN1, 24, 32, 0), + AD_SD_CHANNEL(7, 2, AD7193_CH_AIN2, 24, 32, 0), + AD_SD_CHANNEL(8, 3, AD7193_CH_AIN3, 24, 32, 0), + AD_SD_CHANNEL(9, 4, AD7193_CH_AIN4, 24, 32, 0), + AD_SD_CHANNEL(10, 5, AD7193_CH_AIN5, 24, 32, 0), + AD_SD_CHANNEL(11, 6, AD7193_CH_AIN6, 24, 32, 0), + AD_SD_CHANNEL(12, 7, AD7193_CH_AIN7, 24, 32, 0), + AD_SD_CHANNEL(13, 8, AD7193_CH_AIN8, 24, 32, 0), + IIO_CHAN_SOFT_TIMESTAMP(14), +}; + static int ad7192_probe(struct spi_device *spi) { const struct ad7192_platform_data *pdata = dev_get_platdata(&spi->dev); @@ -651,8 +686,18 @@ static int ad7192_probe(struct spi_device *spi) indio_dev->dev.parent = &spi->dev; indio_dev->name = spi_get_device_id(spi)->name; indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->channels = ad7192_channels; - indio_dev->num_channels = ARRAY_SIZE(ad7192_channels); + + switch (st->devid) { + case ID_AD7193: + indio_dev->channels = ad7193_channels; + indio_dev->num_channels = ARRAY_SIZE(ad7193_channels); + break; + default: + indio_dev->channels = ad7192_channels; + indio_dev->num_channels = ARRAY_SIZE(ad7192_channels); + break; + } + if (st->devid == ID_AD7195) indio_dev->info = &ad7195_info; else @@ -699,6 +744,7 @@ static int ad7192_remove(struct spi_device *spi) static const struct spi_device_id ad7192_id[] = { {"ad7190", ID_AD7190}, {"ad7192", ID_AD7192}, + {"ad7193", ID_AD7193}, {"ad7195", ID_AD7195}, {} }; @@ -715,5 +761,5 @@ static struct spi_driver ad7192_driver = { module_spi_driver(ad7192_driver); MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>"); -MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7195 ADC"); +MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7193, AD7195 ADC"); MODULE_LICENSE("GPL v2"); |