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From 87b1126181f79fb2558652af0d7fafd9deaab5f3 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Tue, 7 Sep 2021 14:49:00 +0100
Subject: [PATCH] reset: reset-brcmstb-rescal: Support shared use
reset_control_reset should not be used with shared reset controllers.
Add support for reset_control_assert and _deassert to get the desired
behaviour and avoid ugly warnings in the kernel log.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
drivers/reset/reset-brcmstb-rescal.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/drivers/reset/reset-brcmstb-rescal.c
+++ b/drivers/reset/reset-brcmstb-rescal.c
@@ -20,6 +20,7 @@ struct brcm_rescal_reset {
struct reset_controller_dev rcdev;
};
+/* Also doubles a deassert */
static int brcm_rescal_reset_set(struct reset_controller_dev *rcdev,
unsigned long id)
{
@@ -52,6 +53,13 @@ static int brcm_rescal_reset_set(struct
return 0;
}
+/* A dummy function - deassert/reset does all the work */
+static int brcm_rescal_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return 0;
+}
+
static int brcm_rescal_reset_xlate(struct reset_controller_dev *rcdev,
const struct of_phandle_args *reset_spec)
{
@@ -61,6 +69,8 @@ static int brcm_rescal_reset_xlate(struc
static const struct reset_control_ops brcm_rescal_reset_ops = {
.reset = brcm_rescal_reset_set,
+ .deassert = brcm_rescal_reset_set,
+ .assert = brcm_rescal_reset_assert,
};
static int brcm_rescal_reset_probe(struct platform_device *pdev)
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