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Diffstat (limited to 'arch/powerpc/sysdev/cpm_gpio.c')
-rw-r--r--arch/powerpc/sysdev/cpm_gpio.c79
1 files changed, 79 insertions, 0 deletions
diff --git a/arch/powerpc/sysdev/cpm_gpio.c b/arch/powerpc/sysdev/cpm_gpio.c
new file mode 100644
index 000000000..0695d26bd
--- /dev/null
+++ b/arch/powerpc/sysdev/cpm_gpio.c
@@ -0,0 +1,79 @@
+// 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_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");