linux-kernel - [PATCH v5 2/3] pinctrl: scmi: add blocklist

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Date: Wed, 08 May 2024 11:32:03 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Sudeep Holla <sudeep.holla@....com>, 
 Cristian Marussi <cristian.marussi@....com>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, 
 Linus Walleij <linus.walleij@...aro.org>, 
 Dong Aisheng <aisheng.dong@....com>, Jacky Bai <ping.bai@....com>
Cc: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, imx@...ts.linux.dev, 
 linux-gpio@...r.kernel.org, Peng Fan <peng.fan@....com>
Subject: [PATCH v5 2/3] pinctrl: scmi: add blocklist

From: Peng Fan <peng.fan@....com>

i.MX95 will have its own pinctrl scmi driver, so need block
pinctrl-scmi driver for i.MX95, otherwise there will be two pinctrl
devices for a single scmi protocol@19.

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/pinctrl/pinctrl-scmi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-scmi.c b/drivers/pinctrl/pinctrl-scmi.c
index 036bc1e3fc6c..df4bbcd7d1d5 100644
--- a/drivers/pinctrl/pinctrl-scmi.c
+++ b/drivers/pinctrl/pinctrl-scmi.c
@@ -11,6 +11,7 @@
 #include <linux/errno.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
+#include <linux/of.h>
 #include <linux/scmi_protocol.h>
 #include <linux/slab.h>
 #include <linux/types.h>
@@ -504,6 +505,11 @@ static int pinctrl_scmi_get_pins(struct scmi_pinctrl *pmx,
 	return 0;
 }
 
+static const char * const scmi_pinctrl_blocklist[] = {
+	"fsl,imx95",
+	NULL
+};
+
 static int scmi_pinctrl_probe(struct scmi_device *sdev)
 {
 	int ret;
@@ -515,6 +521,9 @@ static int scmi_pinctrl_probe(struct scmi_device *sdev)
 	if (!sdev->handle)
 		return -EINVAL;
 
+	if (of_machine_compatible_match(scmi_pinctrl_blocklist))
+		return -ENODEV;
+
 	handle = sdev->handle;
 
 	pinctrl_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_PINCTRL, &ph);

-- 
2.37.1