xref: /openbmc/linux/arch/sh/include/mach-se/mach/mrshpc.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __MACH_SE_MRSHPC_H
3 #define __MACH_SE_MRSHPC_H
4 
5 #include <linux/io.h>
6 
mrshpc_setup_windows(void)7 static inline void __init mrshpc_setup_windows(void)
8 {
9 	if ((__raw_readw(MRSHPC_CSR) & 0x000c) != 0)
10 		return;	/* Not detected */
11 
12 	if ((__raw_readw(MRSHPC_CSR) & 0x0080) == 0) {
13 		__raw_writew(0x0674, MRSHPC_CPWCR); /* Card Vcc is 3.3v? */
14 	} else {
15 		__raw_writew(0x0678, MRSHPC_CPWCR); /* Card Vcc is 5V */
16 	}
17 
18 	/*
19 	 *  PC-Card window open
20 	 *  flag == COMMON/ATTRIBUTE/IO
21 	 */
22 	/* common window open */
23 	__raw_writew(0x8a84, MRSHPC_MW0CR1);
24 	if((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
25 		/* common mode & bus width 16bit SWAP = 1*/
26 		__raw_writew(0x0b00, MRSHPC_MW0CR2);
27 	else
28 		/* common mode & bus width 16bit SWAP = 0*/
29 		__raw_writew(0x0300, MRSHPC_MW0CR2);
30 
31 	/* attribute window open */
32 	__raw_writew(0x8a85, MRSHPC_MW1CR1);
33 	if ((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
34 		/* attribute mode & bus width 16bit SWAP = 1*/
35 		__raw_writew(0x0a00, MRSHPC_MW1CR2);
36 	else
37 		/* attribute mode & bus width 16bit SWAP = 0*/
38 		__raw_writew(0x0200, MRSHPC_MW1CR2);
39 
40 	/* I/O window open */
41 	__raw_writew(0x8a86, MRSHPC_IOWCR1);
42 	__raw_writew(0x0008, MRSHPC_CDCR);	 /* I/O card mode */
43 	if ((__raw_readw(MRSHPC_CSR) & 0x4000) != 0)
44 		__raw_writew(0x0a00, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1*/
45 	else
46 		__raw_writew(0x0200, MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0*/
47 
48 	__raw_writew(0x2000, MRSHPC_ICR);
49 	__raw_writeb(0x00, PA_MRSHPC_MW2 + 0x206);
50 	__raw_writeb(0x42, PA_MRSHPC_MW2 + 0x200);
51 }
52 
53 #endif /* __MACH_SE_MRSHPC_H */
54