From 9a4cc897fd8459b1cc04d90ca19e36aff38ba506 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 26 Oct 2015 10:56:09 +0000 Subject: reset: sti: Provide ops .status() call-back Signed-off-by: Lee Jones Signed-off-by: Philipp Zabel --- drivers/reset/sti/reset-syscfg.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'drivers') diff --git a/drivers/reset/sti/reset-syscfg.c b/drivers/reset/sti/reset-syscfg.c index a145cc066d4a..a78e09c7825e 100644 --- a/drivers/reset/sti/reset-syscfg.c +++ b/drivers/reset/sti/reset-syscfg.c @@ -110,10 +110,33 @@ static int syscfg_reset_dev(struct reset_controller_dev *rcdev, 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, -- cgit v1.2.3