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SubjectRe: [PATCH v3 6/7] iio: imu: adis16480: Add support for ADIS1649x family of devices
On Wed, 27 Feb 2019 18:14:27 +0200
Stefan Popa <stefan.popa@analog.com> wrote:

> The ADIS16495 and ADIS16497 are inertial systems that include a triaxis
> gyroscope and a triaxis accelerometer. The serial peripheral interface
> (SPI) provide a simple interface for data collection and configuration
> control. The devices are similar to ADIS16475, ADIS16480, ADIS16485 and
> ADIS16488, the main differences are highlighted below:
>
> * The temperature data scale is 0.00565 C/LSB for ADIS16475 and ADIS1648x
> devices, while for ADIS1649x 0.0125 C/LSB.
>
> * ADIS1649x devices support different gyroscope measurement ranges which
> are dependent on the dash number (-1, -2, -3), see Table 24 in the
> ADIS16495 datasheet. However, the ADIS16497 gyroscopes have the same
> scale as ADIS16495.
>
> * ADIS16495 devices support the acceleration maximum range of 8g, while
> ADIS16497 devices go up to 40g.
>
> * The internal clock for ADIS1649x devices is 4.25 kSPS. The sampling
> frequency is calculated by applying a decimation rate which can take a
> maximum value of 4250.
>
> * ADIS1649x devices support different default filter frequencies.
>
> Datasheets:
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/adis16495.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/adis16497.pdf
>
> Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Applied. Thanks,

Jonathan

> ---
> drivers/iio/imu/adis16480.c | 97 +++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 97 insertions(+)
>
> diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
> index c90375d..28cece3 100644
> --- a/drivers/iio/imu/adis16480.c
> +++ b/drivers/iio/imu/adis16480.c
> @@ -453,6 +453,13 @@ static const unsigned int adis16480_def_filter_freqs[] = {
> 63,
> };
>
> +static const unsigned int adis16495_def_filter_freqs[] = {
> + 300,
> + 100,
> + 300,
> + 100,
> +};
> +
> static const unsigned int ad16480_filter_data[][2] = {
> [ADIS16480_SCAN_GYRO_X] = { ADIS16480_REG_FILTER_BNK0, 0 },
> [ADIS16480_SCAN_GYRO_Y] = { ADIS16480_REG_FILTER_BNK0, 3 },
> @@ -713,6 +720,12 @@ enum adis16480_variant {
> ADIS16480,
> ADIS16485,
> ADIS16488,
> + ADIS16495_1,
> + ADIS16495_2,
> + ADIS16495_3,
> + ADIS16497_1,
> + ADIS16497_2,
> + ADIS16497_3,
> };
>
> static const struct adis16480_chip_info adis16480_chip_info[] = {
> @@ -769,6 +782,78 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
> .max_dec_rate = 2048,
> .filter_freqs = adis16480_def_filter_freqs,
> },
> + [ADIS16495_1] = {
> + .channels = adis16485_channels,
> + .num_channels = ARRAY_SIZE(adis16485_channels),
> + .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
> + .gyro_max_scale = 125,
> + .accel_max_val = IIO_M_S_2_TO_G(32000),
> + .accel_max_scale = 8,
> + .temp_scale = 12500, /* 12.5 milli degree Celsius */
> + .int_clk = 4250000,
> + .max_dec_rate = 4250,
> + .filter_freqs = adis16495_def_filter_freqs,
> + },
> + [ADIS16495_2] = {
> + .channels = adis16485_channels,
> + .num_channels = ARRAY_SIZE(adis16485_channels),
> + .gyro_max_val = IIO_RAD_TO_DEGREE(18000),
> + .gyro_max_scale = 450,
> + .accel_max_val = IIO_M_S_2_TO_G(32000),
> + .accel_max_scale = 8,
> + .temp_scale = 12500, /* 12.5 milli degree Celsius */
> + .int_clk = 4250000,
> + .max_dec_rate = 4250,
> + .filter_freqs = adis16495_def_filter_freqs,
> + },
> + [ADIS16495_3] = {
> + .channels = adis16485_channels,
> + .num_channels = ARRAY_SIZE(adis16485_channels),
> + .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
> + .gyro_max_scale = 2000,
> + .accel_max_val = IIO_M_S_2_TO_G(32000),
> + .accel_max_scale = 8,
> + .temp_scale = 12500, /* 12.5 milli degree Celsius */
> + .int_clk = 4250000,
> + .max_dec_rate = 4250,
> + .filter_freqs = adis16495_def_filter_freqs,
> + },
> + [ADIS16497_1] = {
> + .channels = adis16485_channels,
> + .num_channels = ARRAY_SIZE(adis16485_channels),
> + .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
> + .gyro_max_scale = 125,
> + .accel_max_val = IIO_M_S_2_TO_G(32000),
> + .accel_max_scale = 40,
> + .temp_scale = 12500, /* 12.5 milli degree Celsius */
> + .int_clk = 4250000,
> + .max_dec_rate = 4250,
> + .filter_freqs = adis16495_def_filter_freqs,
> + },
> + [ADIS16497_2] = {
> + .channels = adis16485_channels,
> + .num_channels = ARRAY_SIZE(adis16485_channels),
> + .gyro_max_val = IIO_RAD_TO_DEGREE(18000),
> + .gyro_max_scale = 450,
> + .accel_max_val = IIO_M_S_2_TO_G(32000),
> + .accel_max_scale = 40,
> + .temp_scale = 12500, /* 12.5 milli degree Celsius */
> + .int_clk = 4250000,
> + .max_dec_rate = 4250,
> + .filter_freqs = adis16495_def_filter_freqs,
> + },
> + [ADIS16497_3] = {
> + .channels = adis16485_channels,
> + .num_channels = ARRAY_SIZE(adis16485_channels),
> + .gyro_max_val = IIO_RAD_TO_DEGREE(20000),
> + .gyro_max_scale = 2000,
> + .accel_max_val = IIO_M_S_2_TO_G(32000),
> + .accel_max_scale = 40,
> + .temp_scale = 12500, /* 12.5 milli degree Celsius */
> + .int_clk = 4250000,
> + .max_dec_rate = 4250,
> + .filter_freqs = adis16495_def_filter_freqs,
> + },
> };
>
> static const struct iio_info adis16480_info = {
> @@ -1014,6 +1099,12 @@ static const struct spi_device_id adis16480_ids[] = {
> { "adis16480", ADIS16480 },
> { "adis16485", ADIS16485 },
> { "adis16488", ADIS16488 },
> + { "adis16495-1", ADIS16495_1 },
> + { "adis16495-2", ADIS16495_2 },
> + { "adis16495-3", ADIS16495_3 },
> + { "adis16497-1", ADIS16497_1 },
> + { "adis16497-2", ADIS16497_2 },
> + { "adis16497-3", ADIS16497_3 },
> { }
> };
> MODULE_DEVICE_TABLE(spi, adis16480_ids);
> @@ -1023,6 +1114,12 @@ static const struct of_device_id adis16480_of_match[] = {
> { .compatible = "adi,adis16480" },
> { .compatible = "adi,adis16485" },
> { .compatible = "adi,adis16488" },
> + { .compatible = "adi,adis16495-1" },
> + { .compatible = "adi,adis16495-2" },
> + { .compatible = "adi,adis16495-3" },
> + { .compatible = "adi,adis16497-1" },
> + { .compatible = "adi,adis16497-2" },
> + { .compatible = "adi,adis16497-3" },
> { },
> };
> MODULE_DEVICE_TABLE(of, adis16480_of_match);

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