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iio: adis: Introduce timeouts structure

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The adis library only allows to define a `startup_delay` which for some
devices is enough. However, other devices define different timeouts with
significantly different timings which could lead to devices to not wait
enough time or to wait a lot more than necessary (which is not
efficient). This patch introduces a new timeout struct that must be
passed into `adis_init()`. There are mainly, for now, three timeouts
used. This is also an introductory patch with the goal of refactoring
`adis_initial_startup()`. New driver's (eg: adis16480, adis16460) are
replicating code for the device initial setup. With some changes (being
this the first one) we can pass this to `adis_initial_startup()`.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nuno Sá
2020-01-07 13:17:04 +02:00
committed by Jonathan Cameron
parent 687d39d451
commit 380b107bbf
11 changed files with 227 additions and 7 deletions
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13
include/linux/iio/imu/adis.h
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@@ -22,6 +22,17 @@
struct adis;
struct adis_burst;
/**
* struct adis_timeouts - ADIS chip variant timeouts
* @reset_ms - Wait time after rst pin goes inactive
* @sw_reset_ms - Wait time after sw reset command
* @self_test_ms - Wait time after self test command
*/
struct adis_timeout {
u16 reset_ms;
u16 sw_reset_ms;
u16 self_test_ms;
};
/**
* struct adis_data - ADIS chip variant specific data
* @read_delay: SPI delay for read operations in us
@@ -32,6 +43,7 @@ struct adis_burst;
* @diag_stat_reg: Register address of the DIAG_STAT register
* @status_error_msgs: Array of error messgaes
* @status_error_mask:
* @timeouts: Chip specific delays
*/
struct adis_data {
unsigned int read_delay;
@@ -45,6 +57,7 @@ struct adis_data {
unsigned int self_test_mask;
bool self_test_no_autoclear;
unsigned int startup_delay;
const struct adis_timeout *timeouts;
const char * const *status_error_msgs;
unsigned int status_error_mask;