iio: imu: adis: add support product ID check in adis_initial_startup

Each driver/chip that wants to validate it's product id, can now
specify a 'prod_id_reg' and an expected 'prod_id' value.
The 'prod_id' value is intentionally left 0 (uninitialized). There aren't
(yet) any product IDs with value 0; this enforces that both 'prod_id_reg'
and 'prod_id' are specified.

At the very least, this routine validates that the SPI connection to the
ADIS chip[s] works well.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Alexandru Ardelean
2020-02-10 15:26:04 +02:00
committed by Jonathan Cameron
parent ecb010d441
commit 1fd4567026
2 changed files with 27 additions and 1 deletions

View File

@@ -41,6 +41,8 @@ struct adis_timeout {
* @glob_cmd_reg: Register address of the GLOB_CMD register
* @msc_ctrl_reg: Register address of the MSC_CTRL register
* @diag_stat_reg: Register address of the DIAG_STAT register
* @prod_id_reg: Register address of the PROD_ID register
* @prod_id: Product ID code that should be expected when reading @prod_id_reg
* @self_test_reg: Register address to request self test command
* @status_error_msgs: Array of error messgaes
* @status_error_mask:
@@ -54,6 +56,9 @@ struct adis_data {
unsigned int glob_cmd_reg;
unsigned int msc_ctrl_reg;
unsigned int diag_stat_reg;
unsigned int prod_id_reg;
unsigned int prod_id;
unsigned int self_test_mask;
unsigned int self_test_reg;