linux-kernel - [PATCH v6 3/5] reset: imx8mp-audiomix: Extend the driver usage

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Message-ID: <20251126124218.803-4-laurentiumihalcea111@gmail.com>
Date: Wed, 26 Nov 2025 04:42:16 -0800
From: Laurentiu Mihalcea <laurentiumihalcea111@...il.com>
To: Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Fabio Estevam <festevam@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Daniel Baluta <daniel.baluta@....com>,
	Shengjiu Wang <shengjiu.wang@....com>,
	Frank Li <Frank.Li@....com>
Cc: devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Pengutronix Kernel Team <kernel@...gutronix.de>
Subject: [PATCH v6 3/5] reset: imx8mp-audiomix: Extend the driver usage

From: Laurentiu Mihalcea <laurentiu.mihalcea@....com>

Switch to per-device reset map to allow reusing the driver for other NXP
block control IPs.

Reviewed-by: Daniel Baluta <daniel.baluta@....com>
Reviewed-by: Frank Li <Frank.Li@....com>
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@....com>
---
 drivers/reset/reset-imx8mp-audiomix.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/reset/reset-imx8mp-audiomix.c b/drivers/reset/reset-imx8mp-audiomix.c
index f6152c0cc5ff..00eee528a2d2 100644
--- a/drivers/reset/reset-imx8mp-audiomix.c
+++ b/drivers/reset/reset-imx8mp-audiomix.c
@@ -24,7 +24,12 @@ struct imx8mp_reset_map {
 	bool active_low;
 };
 
-static const struct imx8mp_reset_map reset_map[] = {
+struct imx8mp_reset_info {
+	const struct imx8mp_reset_map *map;
+	int num_lines;
+};
+
+static const struct imx8mp_reset_map imx8mp_reset_map[] = {
 	[IMX8MP_AUDIOMIX_EARC_RESET] = {
 		.offset	= IMX8MP_AUDIOMIX_EARC_RESET_OFFSET,
 		.mask = BIT(0),
@@ -42,9 +47,15 @@ static const struct imx8mp_reset_map reset_map[] = {
 	},
 };
 
+static const struct imx8mp_reset_info imx8mp_reset_info = {
+	.map = imx8mp_reset_map,
+	.num_lines = ARRAY_SIZE(imx8mp_reset_map),
+};
+
 struct imx8mp_audiomix_reset {
 	struct reset_controller_dev rcdev;
 	struct regmap *regmap;
+	const struct imx8mp_reset_map *map;
 };
 
 static struct imx8mp_audiomix_reset *to_imx8mp_audiomix_reset(struct reset_controller_dev *rcdev)
@@ -56,6 +67,7 @@ static int imx8mp_audiomix_update(struct reset_controller_dev *rcdev,
 				  unsigned long id, bool assert)
 {
 	struct imx8mp_audiomix_reset *priv = to_imx8mp_audiomix_reset(rcdev);
+	const struct imx8mp_reset_map *reset_map = priv->map;
 	unsigned int mask, offset, active_low, val;
 
 	mask = reset_map[id].mask;
@@ -132,16 +144,20 @@ static int imx8mp_audiomix_reset_get_regmap(struct imx8mp_audiomix_reset *priv)
 static int imx8mp_audiomix_reset_probe(struct auxiliary_device *adev,
 				       const struct auxiliary_device_id *id)
 {
+	const struct imx8mp_reset_info *rinfo;
 	struct imx8mp_audiomix_reset *priv;
 	struct device *dev = &adev->dev;
 	int ret;
 
+	rinfo = (void *)id->driver_data;
+
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
 	priv->rcdev.owner     = THIS_MODULE;
-	priv->rcdev.nr_resets = ARRAY_SIZE(reset_map);
+	priv->map             = rinfo->map;
+	priv->rcdev.nr_resets = rinfo->num_lines;
 	priv->rcdev.ops       = &imx8mp_audiomix_reset_ops;
 	priv->rcdev.of_node   = dev->parent->of_node;
 	priv->rcdev.dev	      = dev;
@@ -164,6 +180,7 @@ static int imx8mp_audiomix_reset_probe(struct auxiliary_device *adev,
 static const struct auxiliary_device_id imx8mp_audiomix_reset_ids[] = {
 	{
 		.name = "clk_imx8mp_audiomix.reset",
+		.driver_data = (kernel_ulong_t)&imx8mp_reset_info,
 	},
 	{ }
 };
-- 
2.43.0