From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/powerpc/sysdev/cpm_gpio.c | 80 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 80 insertions(+)
 create mode 100644 arch/powerpc/sysdev/cpm_gpio.c

(limited to 'arch/powerpc/sysdev/cpm_gpio.c')

diff --git a/arch/powerpc/sysdev/cpm_gpio.c b/arch/powerpc/sysdev/cpm_gpio.c
new file mode 100644
index 0000000000..40f57111e9
--- /dev/null
+++ b/arch/powerpc/sysdev/cpm_gpio.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Common CPM GPIO wrapper for the CPM GPIO ports
+ *
+ * Author: Christophe Leroy <christophe.leroy@c-s.fr>
+ *
+ * Copyright 2017 CS Systemes d'Information.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+
+#include <asm/cpm.h>
+#ifdef CONFIG_8xx_GPIO
+#include <asm/cpm1.h>
+#endif
+
+static int cpm_gpio_probe(struct platform_device *ofdev)
+{
+	struct device *dev = &ofdev->dev;
+	int (*gp_add)(struct device *dev) = of_device_get_match_data(dev);
+
+	if (!gp_add)
+		return -ENODEV;
+
+	return gp_add(dev);
+}
+
+static const struct of_device_id cpm_gpio_match[] = {
+#ifdef CONFIG_8xx_GPIO
+	{
+		.compatible = "fsl,cpm1-pario-bank-a",
+		.data = cpm1_gpiochip_add16,
+	},
+	{
+		.compatible = "fsl,cpm1-pario-bank-b",
+		.data = cpm1_gpiochip_add32,
+	},
+	{
+		.compatible = "fsl,cpm1-pario-bank-c",
+		.data = cpm1_gpiochip_add16,
+	},
+	{
+		.compatible = "fsl,cpm1-pario-bank-d",
+		.data = cpm1_gpiochip_add16,
+	},
+	/* Port E uses CPM2 layout */
+	{
+		.compatible = "fsl,cpm1-pario-bank-e",
+		.data = cpm2_gpiochip_add32,
+	},
+#endif
+	{
+		.compatible = "fsl,cpm2-pario-bank",
+		.data = cpm2_gpiochip_add32,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, cpm_gpio_match);
+
+static struct platform_driver cpm_gpio_driver = {
+	.probe		= cpm_gpio_probe,
+	.driver		= {
+		.name	= "cpm-gpio",
+		.of_match_table	= cpm_gpio_match,
+	},
+};
+
+static int __init cpm_gpio_init(void)
+{
+	return platform_driver_register(&cpm_gpio_driver);
+}
+arch_initcall(cpm_gpio_init);
+
+MODULE_AUTHOR("Christophe Leroy <christophe.leroy@c-s.fr>");
+MODULE_DESCRIPTION("Driver for CPM GPIO");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:cpm-gpio");
-- 
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