diff options
Diffstat (limited to 'drivers/iio/amplifiers/ad8366.c')
| -rw-r--r-- | drivers/iio/amplifiers/ad8366.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c index 8d8c8ea94258..d06ac786501c 100644 --- a/drivers/iio/amplifiers/ad8366.c +++ b/drivers/iio/amplifiers/ad8366.c @@ -5,6 +5,7 @@ * AD8366 Dual-Digital Variable Gain Amplifier (VGA) * ADA4961 BiCMOS RF Digital Gain Amplifier (DGA) * ADL5240 Digitally controlled variable gain amplifier (VGA) + * HMC792A 0.25 dB LSB GaAs MMIC 6-Bit Digital Attenuator * HMC1119 0.25 dB LSB, 7-Bit, Silicon Digital Attenuator * * Copyright 2012-2019 Analog Devices Inc. @@ -28,6 +29,7 @@ enum ad8366_type { ID_AD8366, ID_ADA4961, ID_ADL5240, + ID_HMC792, ID_HMC1119, }; @@ -43,7 +45,7 @@ struct ad8366_state { struct gpio_desc *reset_gpio; unsigned char ch[2]; enum ad8366_type type; - struct ad8366_info *info; + const struct ad8366_info *info; /* * DMA (thus cache coherency maintenance) may require the * transfer buffers to live in their own cache lines. @@ -51,7 +53,7 @@ struct ad8366_state { unsigned char data[2] __aligned(IIO_DMA_MINALIGN); }; -static struct ad8366_info ad8366_infos[] = { +static const struct ad8366_info ad8366_infos[] = { [ID_AD8366] = { .gain_min = 4500, .gain_max = 20500, @@ -64,6 +66,10 @@ static struct ad8366_info ad8366_infos[] = { .gain_min = -11500, .gain_max = 20000, }, + [ID_HMC792] = { + .gain_min = -15750, + .gain_max = 0, + }, [ID_HMC1119] = { .gain_min = -31750, .gain_max = 0, @@ -90,6 +96,7 @@ static int ad8366_write(struct iio_dev *indio_dev, case ID_ADL5240: st->data[0] = (ch_a & 0x3F); break; + case ID_HMC792: case ID_HMC1119: st->data[0] = ch_a; break; @@ -127,6 +134,9 @@ static int ad8366_read_raw(struct iio_dev *indio_dev, case ID_ADL5240: gain = 20000 - 31500 + code * 500; break; + case ID_HMC792: + gain = -1 * code * 500; + break; case ID_HMC1119: gain = -1 * code * 250; break; @@ -153,7 +163,7 @@ static int ad8366_write_raw(struct iio_dev *indio_dev, long mask) { struct ad8366_state *st = iio_priv(indio_dev); - struct ad8366_info *inf = st->info; + const struct ad8366_info *inf = st->info; int code = 0, gain; int ret; @@ -176,6 +186,9 @@ static int ad8366_write_raw(struct iio_dev *indio_dev, case ID_ADL5240: code = ((gain - 500 - 20000) / 500) & 0x3F; break; + case ID_HMC792: + code = (abs(gain) / 500) & 0x3F; + break; case ID_HMC1119: code = (abs(gain) / 250) & 0x7F; break; @@ -261,6 +274,7 @@ static int ad8366_probe(struct spi_device *spi) break; case ID_ADA4961: case ID_ADL5240: + case ID_HMC792: case ID_HMC1119: st->reset_gpio = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_HIGH); if (IS_ERR(st->reset_gpio)) { @@ -314,8 +328,9 @@ static const struct spi_device_id ad8366_id[] = { {"ad8366", ID_AD8366}, {"ada4961", ID_ADA4961}, {"adl5240", ID_ADL5240}, + {"hmc792a", ID_HMC792}, {"hmc1119", ID_HMC1119}, - {} + { } }; MODULE_DEVICE_TABLE(spi, ad8366_id); |