diff options
Diffstat (limited to 'drivers/reset/reset-simple.c')
| -rw-r--r-- | drivers/reset/reset-simple.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/reset/reset-simple.c b/drivers/reset/reset-simple.c index c854aa351640..e066614818a3 100644 --- a/drivers/reset/reset-simple.c +++ b/drivers/reset/reset-simple.c @@ -11,6 +11,7 @@ * Maxime Ripard <maxime.ripard@free-electrons.com> */ +#include <linux/delay.h> #include <linux/device.h> #include <linux/err.h> #include <linux/io.h> @@ -63,6 +64,24 @@ static int reset_simple_deassert(struct reset_controller_dev *rcdev, return reset_simple_update(rcdev, id, false); } +static int reset_simple_reset(struct reset_controller_dev *rcdev, + unsigned long id) +{ + struct reset_simple_data *data = to_reset_simple_data(rcdev); + int ret; + + if (!data->reset_us) + return -ENOTSUPP; + + ret = reset_simple_assert(rcdev, id); + if (ret) + return ret; + + usleep_range(data->reset_us, data->reset_us * 2); + + return reset_simple_deassert(rcdev, id); +} + static int reset_simple_status(struct reset_controller_dev *rcdev, unsigned long id) { @@ -80,6 +99,7 @@ static int reset_simple_status(struct reset_controller_dev *rcdev, const struct reset_control_ops reset_simple_ops = { .assert = reset_simple_assert, .deassert = reset_simple_deassert, + .reset = reset_simple_reset, .status = reset_simple_status, }; EXPORT_SYMBOL_GPL(reset_simple_ops); |