diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-03-25 03:53:42 -0300 |
commit | 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 (patch) | |
tree | fa581f6dc1c0596391690d1f67eceef3af8246dc /drivers/reset/sti/reset-syscfg.c | |
parent | d4e493caf788ef44982e131ff9c786546904d934 (diff) |
Linux-libre 4.5-gnu
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 a145cc066..1600cc755 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, |