diff options
| -rw-r--r-- | drivers/iio/adc/ad7606.c | 46 | ||||
| -rw-r--r-- | drivers/iio/adc/ad7606.h | 9 | ||||
| -rw-r--r-- | drivers/iio/adc/ad7606_spi.c | 2 |
3 files changed, 54 insertions, 3 deletions
diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c index 6b87ed410c93..24c70c3cefb4 100644 --- a/drivers/iio/adc/ad7606.c +++ b/drivers/iio/adc/ad7606.c @@ -39,6 +39,10 @@ static const unsigned int ad7606_oversampling_avail[7] = { 1, 2, 4, 8, 16, 32, 64, }; +static const unsigned int ad7616_oversampling_avail[8] = { + 1, 2, 4, 8, 16, 32, 64, 128, +}; + static int ad7606_reset(struct ad7606_state *st) { if (st->gpio_reset) { @@ -220,6 +224,11 @@ static int ad7606_write_raw(struct iio_dev *indio_dev, mutex_lock(&st->lock); gpiod_set_array_value(ARRAY_SIZE(values), st->gpio_os->desc, st->gpio_os->info, values); + + /* AD7616 requires a reset to update value */ + if (st->chip_info->os_req_reset) + ad7606_reset(st); + st->oversampling = st->oversampling_avail[i]; mutex_unlock(&st->lock); @@ -314,6 +323,36 @@ static const struct iio_chan_spec ad7606_channels[] = { AD7606_CHANNEL(7), }; +/* + * The current assumption that this driver makes for AD7616, is that it's + * working in Hardware Mode with Serial, Burst and Sequencer modes activated. + * To activate them, following pins must be pulled high: + * -SER/PAR + * -SEQEN + * And following pins must be pulled low: + * -WR/BURST + * -DB4/SER1W + */ +static const struct iio_chan_spec ad7616_channels[] = { + IIO_CHAN_SOFT_TIMESTAMP(16), + AD7606_CHANNEL(0), + AD7606_CHANNEL(1), + AD7606_CHANNEL(2), + AD7606_CHANNEL(3), + AD7606_CHANNEL(4), + AD7606_CHANNEL(5), + AD7606_CHANNEL(6), + AD7606_CHANNEL(7), + AD7606_CHANNEL(8), + AD7606_CHANNEL(9), + AD7606_CHANNEL(10), + AD7606_CHANNEL(11), + AD7606_CHANNEL(12), + AD7606_CHANNEL(13), + AD7606_CHANNEL(14), + AD7606_CHANNEL(15), +}; + static const struct ad7606_chip_info ad7606_chip_info_tbl[] = { /* More devices added in future */ [ID_AD7605_4] = { @@ -338,6 +377,13 @@ static const struct ad7606_chip_info ad7606_chip_info_tbl[] = { .oversampling_avail = ad7606_oversampling_avail, .oversampling_num = ARRAY_SIZE(ad7606_oversampling_avail), }, + [ID_AD7616] = { + .channels = ad7616_channels, + .num_channels = 17, + .oversampling_avail = ad7616_oversampling_avail, + .oversampling_num = ARRAY_SIZE(ad7616_oversampling_avail), + .os_req_reset = true, + }, }; static int ad7606_request_gpios(struct ad7606_state *st) diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h index 8c91bd427c4e..f9ef52131e74 100644 --- a/drivers/iio/adc/ad7606.h +++ b/drivers/iio/adc/ad7606.h @@ -15,12 +15,14 @@ * @oversampling_avail pointer to the array which stores the available * oversampling ratios. * @oversampling_num number of elements stored in oversampling_avail array + * @os_req_reset some devices require a reset to update oversampling */ struct ad7606_chip_info { const struct iio_chan_spec *channels; unsigned int num_channels; const unsigned int *oversampling_avail; unsigned int oversampling_num; + bool os_req_reset; }; /** @@ -76,9 +78,9 @@ struct ad7606_state { /* * DMA (thus cache coherency maintenance) requires the * transfer buffers to live in their own cache lines. - * 8 * 16-bit samples + 64-bit timestamp + * 16 * 16-bit samples + 64-bit timestamp */ - unsigned short data[12] ____cacheline_aligned; + unsigned short data[20] ____cacheline_aligned; }; /** @@ -98,7 +100,8 @@ enum ad7606_supported_device_ids { ID_AD7605_4, ID_AD7606_8, ID_AD7606_6, - ID_AD7606_4 + ID_AD7606_4, + ID_AD7616, }; #ifdef CONFIG_PM_SLEEP diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c index 4fd0ec36a086..b7faef69a58f 100644 --- a/drivers/iio/adc/ad7606_spi.c +++ b/drivers/iio/adc/ad7606_spi.c @@ -53,6 +53,7 @@ static const struct spi_device_id ad7606_id_table[] = { { "ad7606-4", ID_AD7606_4 }, { "ad7606-6", ID_AD7606_6 }, { "ad7606-8", ID_AD7606_8 }, + { "ad7616", ID_AD7616 }, {} }; MODULE_DEVICE_TABLE(spi, ad7606_id_table); @@ -62,6 +63,7 @@ static const struct of_device_id ad7606_of_match[] = { { .compatible = "adi,ad7606-4" }, { .compatible = "adi,ad7606-6" }, { .compatible = "adi,ad7606-8" }, + { .compatible = "adi,ad7616" }, { }, }; MODULE_DEVICE_TABLE(of, ad7606_of_match); |