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reset: simple: Add reset callback

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The reset-simple code lacks a reset callback that is still pretty easy to
implement. The only real thing to consider is the delay needed for a device
to be reset, so let's expose that as part of the reset-simple driver data.

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Maxime Ripard
2020-05-27 17:47:32 +02:00
committed by Philipp Zabel
parent 9357b04624
commit a9701376ed
2 changed files with 27 additions and 0 deletions
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7
include/linux/reset/reset-simple.h
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@@ -27,6 +27,12 @@
* @status_active_low: if true, bits read back as cleared while the reset is
* asserted. Otherwise, bits read back as set while the
* reset is asserted.
* @reset_us: Minimum delay in microseconds needed that needs to be
* waited for between an assert and a deassert to reset the
* device. If multiple consumers with different delay
* requirements are connected to this controller, it must
* be the largest minimum delay. 0 means that such a delay is
* unknown and the reset operation is unsupported.
*/
struct reset_simple_data {
spinlock_t lock;
@@ -34,6 +40,7 @@ struct reset_simple_data {
struct reset_controller_dev rcdev;
bool active_low;
bool status_active_low;
unsigned int reset_us;
};
extern const struct reset_control_ops reset_simple_ops;