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-rw-r--r--arch/powerpc/include/asm/parport.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/parport.h b/arch/powerpc/include/asm/parport.h
new file mode 100644
index 000000000..42cc321ed
--- /dev/null
+++ b/arch/powerpc/include/asm/parport.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * parport.h: platform-specific PC-style parport initialisation
+ *
+ * Copyright (C) 1999, 2000 Tim Waugh <tim@cyberelk.demon.co.uk>
+ *
+ * This file should only be included by drivers/parport/parport_pc.c.
+ */
+
+#ifndef _ASM_POWERPC_PARPORT_H
+#define _ASM_POWERPC_PARPORT_H
+#ifdef __KERNEL__
+
+#include <linux/of_irq.h>
+
+static int parport_pc_find_nonpci_ports (int autoirq, int autodma)
+{
+ struct device_node *np;
+ const u32 *prop;
+ u32 io1, io2;
+ int propsize;
+ int count = 0;
+ int virq;
+
+ for_each_compatible_node(np, "parallel", "pnpPNP,400") {
+ prop = of_get_property(np, "reg", &propsize);
+ if (!prop || propsize > 6*sizeof(u32))
+ continue;
+ io1 = prop[1]; io2 = prop[2];
+
+ virq = irq_of_parse_and_map(np, 0);
+ if (!virq)
+ continue;
+
+ if (parport_pc_probe_port(io1, io2, virq, autodma, NULL, 0)
+ != NULL)
+ count++;
+ }
+ return count;
+}
+
+#endif /* __KERNEL__ */
+#endif /* !(_ASM_POWERPC_PARPORT_H) */