diff options
Diffstat (limited to 'drivers/reset/sti/reset-syscfg.c')
| -rw-r--r-- | drivers/reset/sti/reset-syscfg.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/reset/sti/reset-syscfg.c b/drivers/reset/sti/reset-syscfg.c index a145cc066d4a..1600cc7557f5 100644 --- a/drivers/reset/sti/reset-syscfg.c +++ b/drivers/reset/sti/reset-syscfg.c @@ -103,17 +103,42 @@ static int syscfg_reset_deassert(struct reset_controller_dev *rcdev, static int syscfg_reset_dev(struct reset_controller_dev *rcdev, unsigned long idx) { - int err = syscfg_reset_assert(rcdev, idx); + int err; + + err = syscfg_reset_assert(rcdev, idx); if (err) return err; return syscfg_reset_deassert(rcdev, idx); } +static int syscfg_reset_status(struct reset_controller_dev *rcdev, + unsigned long idx) +{ + struct syscfg_reset_controller *rst = to_syscfg_reset_controller(rcdev); + const struct syscfg_reset_channel *ch; + u32 ret_val = 0; + int err; + + if (idx >= rcdev->nr_resets) + return -EINVAL; + + ch = &rst->channels[idx]; + if (ch->ack) + err = regmap_field_read(ch->ack, &ret_val); + else + err = regmap_field_read(ch->reset, &ret_val); + if (err) + return err; + + return rst->active_low ? !ret_val : !!ret_val; +} + static struct reset_control_ops syscfg_reset_ops = { .reset = syscfg_reset_dev, .assert = syscfg_reset_assert, .deassert = syscfg_reset_deassert, + .status = syscfg_reset_status, }; static int syscfg_reset_controller_register(struct device *dev, |