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| author | Andreas Dannenberg <dannenberg@ti.com> | 2018-08-27 13:27:39 +0300 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-09-11 15:32:55 +0300 |
| commit | e7012e6e1f9e1c16f093d71bd53b34a6467f07bc (patch) | |
| tree | 3ae6f0557351476502ee371cbc4a82c81465e1db | |
| parent | aec99c9776d33a1c2218f975a02cb1068cdcf579 (diff) | |
| download | u-boot-e7012e6e1f9e1c16f093d71bd53b34a6467f07bc.tar.xz | |
dm: reset: Update uclass to allow querying reset status
Add a reset operations function pointer to support querying the current
status of a reset control.
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
| -rw-r--r-- | drivers/reset/reset-uclass.c | 9 | ||||
| -rw-r--r-- | include/reset-uclass.h | 8 | ||||
| -rw-r--r-- | include/reset.h | 14 |
3 files changed, 31 insertions, 0 deletions
diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c index 3899537635..89e39c6b5a 100644 --- a/drivers/reset/reset-uclass.c +++ b/drivers/reset/reset-uclass.c @@ -192,6 +192,15 @@ int reset_deassert_bulk(struct reset_ctl_bulk *bulk) return 0; } +int reset_status(struct reset_ctl *reset_ctl) +{ + struct reset_ops *ops = reset_dev_ops(reset_ctl->dev); + + debug("%s(reset_ctl=%p)\n", __func__, reset_ctl); + + return ops->rst_status(reset_ctl); +} + int reset_release_all(struct reset_ctl *reset_ctl, int count) { int i, ret; diff --git a/include/reset-uclass.h b/include/reset-uclass.h index c17d738b31..7b5cc3cb3b 100644 --- a/include/reset-uclass.h +++ b/include/reset-uclass.h @@ -76,6 +76,14 @@ struct reset_ops { * @return 0 if OK, or a negative error code. */ int (*rst_deassert)(struct reset_ctl *reset_ctl); + /** + * rst_status - Check reset signal status. + * + * @reset_ctl: The reset signal to check. + * @return 0 if deasserted, positive if asserted, or a negative + * error code. + */ + int (*rst_status)(struct reset_ctl *reset_ctl); }; #endif diff --git a/include/reset.h b/include/reset.h index a7bbc1c331..34ebb096dd 100644 --- a/include/reset.h +++ b/include/reset.h @@ -207,6 +207,15 @@ int reset_deassert(struct reset_ctl *reset_ctl); int reset_deassert_bulk(struct reset_ctl_bulk *bulk); /** + * rst_status - Check reset signal status. + * + * @reset_ctl: The reset signal to check. + * @return 0 if deasserted, positive if asserted, or a negative + * error code. + */ +int reset_status(struct reset_ctl *reset_ctl); + +/** * reset_release_all - Assert/Free an array of previously requested resets. * * For each reset contained in the reset array, this function will check if @@ -279,6 +288,11 @@ static inline int reset_deassert_bulk(struct reset_ctl_bulk *bulk) return 0; } +static inline int reset_status(struct reset_ctl *reset_ctl) +{ + return -ENOTSUPP; +} + static inline int reset_release_all(struct reset_ctl *reset_ctl, int count) { return 0; |