| Message ID | 20231107132118.1165494-1-anamaria.cuscoo@gmail.com |
|---|---|
| Headers | show |
| Series | Add ADRF5740 driver | expand |
On Tue, 2023-11-07 at 15:21 +0200, Ana-Maria Cusco wrote: > From: Ana-Maria Cusco <ana-maria.cusco@analog.com> > > This adds support for the Analog Devices ADRF5740 2 dB LSB, 4-Bit, > Silicon Digital Attenuator, 10 MHz to 60 GHz > > Signed-off-by: Ana-Maria Cusco <ana-maria.cusco@analog.com> > --- > drivers/iio/amplifiers/hmc425a.c | 23 +++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/drivers/iio/amplifiers/hmc425a.c > b/drivers/iio/amplifiers/hmc425a.c > index e87d35d50a95..ed4d72922696 100644 > --- a/drivers/iio/amplifiers/hmc425a.c > +++ b/drivers/iio/amplifiers/hmc425a.c > @@ -5,6 +5,7 @@ > * Copyright 2020 Analog Devices Inc. > */ > > +#include <linux/bitops.h> > #include <linux/device.h> > #include <linux/err.h> > #include <linux/gpio/consumer.h> > @@ -22,6 +23,7 @@ > enum hmc425a_type { > ID_HMC425A, > ID_HMC540S, > + ID_ADRF5740 > }; > > struct hmc425a_chip_info { > @@ -74,6 +76,10 @@ static int hmc425a_read_raw(struct iio_dev *indio_dev, > case ID_HMC540S: > gain = ~code * -1000; > break; > + case ID_ADRF5740: > + code = code & BIT(3) ? code & ~BIT(2) : code; > + gain = code * -2000; > + break; > } > > *val = gain / 1000; > @@ -113,6 +119,10 @@ static int hmc425a_write_raw(struct iio_dev *indio_dev, > case ID_HMC540S: > code = ~((abs(gain) / 1000) & 0xF); > break; > + case ID_ADRF5740: > + code = (abs(gain) / 2000) & 0xF; > + code = code & BIT(3) ? code | BIT(2) : code; > + break; > } > > mutex_lock(&st->lock); > @@ -165,6 +175,7 @@ static const struct iio_chan_spec hmc425a_channels[] = { > static const struct of_device_id hmc425a_of_match[] = { > { .compatible = "adi,hmc425a", .data = (void *)ID_HMC425A }, > { .compatible = "adi,hmc540s", .data = (void *)ID_HMC540S }, > + { .compatible = "adi,adrf5740", .data = (void *)ID_ADRF5740 }, > {}, > }; > MODULE_DEVICE_TABLE(of, hmc425a_of_match); > @@ -188,6 +199,15 @@ static struct hmc425a_chip_info hmc425a_chip_info_tbl[] = > { > .gain_max = 0, > .default_gain = -0x10, /* set default gain -15.0db*/ > }, > + [ID_ADRF5740] = { > + .name = "adrf5740", > + .channels = hmc425a_channels, > + .num_channels = ARRAY_SIZE(hmc425a_channels), > + .num_gpios = 4, > + .gain_min = -22000, > + .gain_max = 0, > + .default_gain = 0xF, /* set default gain -22.0db*/ > + }, > }; > > static int hmc425a_probe(struct platform_device *pdev) > @@ -229,6 +249,9 @@ static int hmc425a_probe(struct platform_device *pdev) > indio_dev->info = &hmc425a_info; > indio_dev->modes = INDIO_DIRECT_MODE; > > + /* Set default gain */ > + hmc425a_write(indio_dev, st->gain); > + This is an unrelated change. It's simple enough to sneak it in but you should at least mention it in the commit message. With that, Reviewed-by: Nuno Sa <nuno.sa@analog.com>
From: Ana-Maria Cusco <ana-maria.cusco@analog.com> This patch series adds support for the ADRF5740 Attenuator within the existing HMC425A driver. The ADRF5740 is a silicon, 4-bit digital attenuator with 22 dB attenuation control range in 2 dB steps. It offers parallel control mode through four digitally controlled inputs. V1 -> V2: * dt-bindings: arrange entry in alphabetical order * improve title clarity Ana-Maria Cusco (2): iio: amplifiers: hmc425a: add support for ADRF5740 Attenuator dt-bindings: iio: hmc425a: add entry for ADRF5740 Attenuator .../bindings/iio/amplifiers/adi,hmc425a.yaml | 4 ++++ drivers/iio/amplifiers/hmc425a.c | 23 +++++++++++++++++++ 2 files changed, 27 insertions(+)