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1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Marubun MR-SHPC-01 PCMCIA controller device driver
4  *
5  * (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
6  */
7 
8 #include <common.h>
9 #include <config.h>
10 #include <pcmcia.h>
11 #include <asm/io.h>
12 
13 #undef CONFIG_PCMCIA
14 
15 #if defined(CONFIG_CMD_PCMCIA)
16 #define	CONFIG_PCMCIA
17 #endif
18 
19 #if defined(CONFIG_IDE)
20 #define	CONFIG_PCMCIA
21 #endif
22 
23 #if defined(CONFIG_PCMCIA)
24 
25 /* MR-SHPC-01 register */
26 #define MRSHPC_MODE	(CONFIG_SYS_MARUBUN_MRSHPC + 4)
27 #define MRSHPC_OPTION   (CONFIG_SYS_MARUBUN_MRSHPC + 6)
28 #define MRSHPC_CSR      (CONFIG_SYS_MARUBUN_MRSHPC + 8)
29 #define MRSHPC_ISR      (CONFIG_SYS_MARUBUN_MRSHPC + 10)
30 #define MRSHPC_ICR      (CONFIG_SYS_MARUBUN_MRSHPC + 12)
31 #define MRSHPC_CPWCR    (CONFIG_SYS_MARUBUN_MRSHPC + 14)
32 #define MRSHPC_MW0CR1   (CONFIG_SYS_MARUBUN_MRSHPC + 16)
33 #define MRSHPC_MW1CR1   (CONFIG_SYS_MARUBUN_MRSHPC + 18)
34 #define MRSHPC_IOWCR1   (CONFIG_SYS_MARUBUN_MRSHPC + 20)
35 #define MRSHPC_MW0CR2   (CONFIG_SYS_MARUBUN_MRSHPC + 22)
36 #define MRSHPC_MW1CR2   (CONFIG_SYS_MARUBUN_MRSHPC + 24)
37 #define MRSHPC_IOWCR2   (CONFIG_SYS_MARUBUN_MRSHPC + 26)
38 #define MRSHPC_CDCR     (CONFIG_SYS_MARUBUN_MRSHPC + 28)
39 #define MRSHPC_PCIC_INFO (CONFIG_SYS_MARUBUN_MRSHPC + 30)
40 
pcmcia_on(void)41 int pcmcia_on (void)
42 {
43 	printf("Enable PCMCIA " PCMCIA_SLOT_MSG "\n");
44 
45 	/* Init */
46 	outw( 0x0000 , MRSHPC_MODE );
47 
48 	if ((inw(MRSHPC_CSR) & 0x000c) == 0){	/* if card detect is true */
49 		if ((inw(MRSHPC_CSR) & 0x0080) == 0){
50 			outw(0x0674 ,MRSHPC_CPWCR);  /* Card Vcc is 3.3v? */
51 		}else{
52 			outw(0x0678 ,MRSHPC_CPWCR);  /* Card Vcc is 5V */
53 		}
54 		udelay( 100000 );   /* wait for power on */
55 	}else{
56 		return 1;
57 	}
58 	/*
59 	 *	PC-Card window open
60 	 *	flag == COMMON/ATTRIBUTE/IO
61 	 */
62 	/* common window open */
63 	outw(0x8a84,MRSHPC_MW0CR1); /* window 0xb8400000 */
64 	if ((inw(MRSHPC_CSR) & 0x4000) != 0)
65 		outw(0x0b00,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 1 */
66 	else
67 		outw(0x0300,MRSHPC_MW0CR2); /* common mode & bus width 16bit SWAP = 0 */
68 
69 	/* attribute window open */
70 	outw(0x8a85,MRSHPC_MW1CR1); /* window 0xb8500000 */
71 	if ((inw(MRSHPC_CSR) & 0x4000) != 0)
72 		outw(0x0a00,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 1 */
73 	else
74 		outw(0x0200,MRSHPC_MW1CR2); /* attribute mode & bus width 16bit SWAP = 0 */
75 
76 	/* I/O window open */
77 	outw(0x8a86,MRSHPC_IOWCR1); /* I/O window 0xb8600000 */
78 	outw(0x0008,MRSHPC_CDCR);   /* I/O card mode */
79 	if ((inw(MRSHPC_CSR) & 0x4000) != 0)
80 		outw(0x0a00,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 1 */
81 	else
82 		outw(0x0200,MRSHPC_IOWCR2); /* bus width 16bit SWAP = 0 */
83 
84 	outw(0x0000,MRSHPC_ISR);
85 	outw(0x2000,MRSHPC_ICR);
86 	outb(0x00,(CONFIG_SYS_MARUBUN_MW2 + 0x206));
87 	outb(0x42,(CONFIG_SYS_MARUBUN_MW2 + 0x200));
88 
89 	return 0;
90 }
91 
pcmcia_off(void)92 int pcmcia_off (void)
93 {
94 	printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n");
95 
96 	return 0;
97 }
98 
99 #endif /* CONFIG_PCMCIA */
100