1 files changed, 53 insertions, 0 deletions
diff --git a/arch/sh/include/mach-se/mach/mrshpc.h b/arch/sh/include/mach-se/mach/mrshpc.h
new file mode 100644
index 000000000..4e260f399
--- /dev/null
+++ b/arch/sh/include/mach-se/mach/mrshpc.h
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __MACH_SE_MRSHPC_H
+#define __MACH_SE_MRSHPC_H
+
+#include <linux/io.h>
+
+static inline void __init mrshpc_setup_windows(void)
+{
+	if ((__raw_readw(MRSHPC_CSR) & 0x000c) != 0)
+		return;	/* Not detected */
+
+	if ((__raw_readw(MRSHPC_CSR) & 0x0080) == 0) {
+		__raw_writew(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */
+	} else {
+		__raw_writew(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */
+	}
+
+	/*
+	 *  PC-Card window open
+	 *  flag == COMMON/ATTRIBUTE/IO
+	 */
+	/* common window open */
+	__raw_writew(0x8a84, MRSHPC_MW0CR1);
+	if((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
+		/* common mode & bus width 16bit SWAP = 1*/
+		__raw_writew(0x0b00, MRSHPC_MW0CR2);
+	else
+		/* common mode & bus width 16bit SWAP = 0*/
+		__raw_writew(0x0300, MRSHPC_MW0CR2);
+
+	/* attribute window open */
+	__raw_writew(0x8a85, MRSHPC_MW1CR1);
+	if ((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
+		/* attribute mode & bus width 16bit SWAP = 1*/
+		__raw_writew(0x0a00, MRSHPC_MW1CR2);
+	else
+		/* attribute mode & bus width 16bit SWAP = 0*/
+		__raw_writew(0x0200, MRSHPC_MW1CR2);
+
+	/* I/O window open */
+	__raw_writew(0x8a86, MRSHPC_IOWCR1);
+	__raw_writew(0x0008, MRSHPC_CDCR);	 /* I/O card mode */
+	if ((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
+		__raw_writew(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/
+	else
+		__raw_writew(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/
+
+	__raw_writew(0x2000, MRSHPC_ICR);
+	__raw_writeb(0x00, PA_MRSHPC_MW2 + 0x206);
+	__raw_writeb(0x42, PA_MRSHPC_MW2 + 0x200);
+}
+
+#endif /* __MACH_SE_MRSHPC_H */