iio: adis: Introduce timeouts structure

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()`.

Nuno Sá committed 6 years ago

Commit 380b1071 parent 687d39d11 files · +227 −7Browse files

Showing the changes to include/linux (1 of 11 files). Show all

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include/linux/iio/imu/adis.h+13−0

@@ -22,6 +22,17 @@ · 21 unmodified lines
22	22	struct adis;
23	23	struct adis_burst;
24	24
	25	+/**
	26	+ * struct adis_timeouts - ADIS chip variant timeouts
	27	+ * @reset_ms - Wait time after rst pin goes inactive
	28	+ * @sw_reset_ms - Wait time after sw reset command
	29	+ * @self_test_ms - Wait time after self test command
	30	+ */
	31	+struct adis_timeout {
	32	+ u16 reset_ms;
	33	+ u16 sw_reset_ms;
	34	+ u16 self_test_ms;
	35	+};
25	36	/**
26	37	* struct adis_data - ADIS chip variant specific data
27	38	* @read_delay: SPI delay for read operations in us
@@ -32,6 +43,7 @@ struct adis_burst; · 4 unmodified lines
32	43	* @diag_stat_reg: Register address of the DIAG_STAT register
33	44	* @status_error_msgs: Array of error messgaes
34	45	* @status_error_mask:
	46	+ * @timeouts: Chip specific delays
35	47	*/
36	48	struct adis_data {
37	49	unsigned int read_delay;
@@ -45,6 +57,7 @@ struct adis_data { · 7 unmodified lines
45	57	unsigned int self_test_mask;
46	58	bool self_test_no_autoclear;
47	59	unsigned int startup_delay;
	60	+ const struct adis_timeout *timeouts;
48	61
49	62	const char * const *status_error_msgs;
50	63	unsigned int status_error_mask;