diff options
| author | Beniamin Bia <beniamin.bia@analog.com> | 2019-07-18 09:27:33 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-07-28 10:56:08 +0300 |
| commit | f2a22e1e172f7dc486325216ec0890f301cb09e2 (patch) | |
| tree | ce256a21de021847a717f8bd0b342bc0d8eca7e9 /drivers/iio/adc/ad7606.c | |
| parent | c5d93137af93c228392d133b3b00a0edae80dd40 (diff) | |
| download | linux-f2a22e1e172f7dc486325216ec0890f301cb09e2.tar.xz | |
iio: adc: ad7606: Add support for software mode for ad7616
Support for ad7616 running in software was added. In order
to activate the software mode, HW_RNGSEL pins must be pulled low.
Oversampling and input ranges are now configured in corresponding
registers. Ad7616 has multiple scale options when it is configured
in software mode.
Also, in order to support multiple devices in software mode, the spi
calculation of registers address must be generic. Because
the length of address and bit which specifies the read/write operation is
different for every device, calculation of address was made generic.
Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc/ad7606.c')
| -rw-r--r-- | drivers/iio/adc/ad7606.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index a6034cf7238a..be2330c8b277 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -35,6 +35,11 @@ static const unsigned int ad7606_scale_avail[2] = { 152588, 305176 }; + +static const unsigned int ad7616_sw_scale_avail[3] = { + 76293, 152588, 305176 +}; + static const unsigned int ad7606_oversampling_avail[7] = { 1, 2, 4, 8, 16, 32, 64, }; @@ -606,6 +611,10 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address, "adi,sw-mode"); if (st->sw_mode_en) { + /* Scale of 0.076293 is only available in sw mode */ + st->scale_avail = ad7616_sw_scale_avail; + st->num_scales = ARRAY_SIZE(ad7616_sw_scale_avail); + /* After reset, in software mode, ±10 V is set by default */ memset32(st->range, 2, ARRAY_SIZE(st->range)); indio_dev->info = &ad7606_info_os_and_range; |