1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
7 */
8
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <asm/bootinfo.h>
12 #include <linux/platform_device.h>
13 #include <bcm63xx_cs.h>
14 #include <bcm63xx_cpu.h>
15 #include <bcm63xx_dev_pcmcia.h>
16 #include <bcm63xx_io.h>
17 #include <bcm63xx_regs.h>
18
19 static struct resource pcmcia_resources[] = {
20 /* pcmcia registers */
21 {
22 /* start & end filled at runtime */
23 .flags = IORESOURCE_MEM,
24 },
25
26 /* pcmcia memory zone resources */
27 {
28 .start = BCM_PCMCIA_COMMON_BASE_PA,
29 .end = BCM_PCMCIA_COMMON_END_PA,
30 .flags = IORESOURCE_MEM,
31 },
32 {
33 .start = BCM_PCMCIA_ATTR_BASE_PA,
34 .end = BCM_PCMCIA_ATTR_END_PA,
35 .flags = IORESOURCE_MEM,
36 },
37 {
38 .start = BCM_PCMCIA_IO_BASE_PA,
39 .end = BCM_PCMCIA_IO_END_PA,
40 .flags = IORESOURCE_MEM,
41 },
42
43 /* PCMCIA irq */
44 {
45 /* start filled at runtime */
46 .flags = IORESOURCE_IRQ,
47 },
48
49 /* declare PCMCIA IO resource also */
50 {
51 .start = BCM_PCMCIA_IO_BASE_PA,
52 .end = BCM_PCMCIA_IO_END_PA,
53 .flags = IORESOURCE_IO,
54 },
55 };
56
57 static struct bcm63xx_pcmcia_platform_data pd;
58
59 static struct platform_device bcm63xx_pcmcia_device = {
60 .name = "bcm63xx_pcmcia",
61 .id = 0,
62 .num_resources = ARRAY_SIZE(pcmcia_resources),
63 .resource = pcmcia_resources,
64 .dev = {
65 .platform_data = &pd,
66 },
67 };
68
config_pcmcia_cs(unsigned int cs,u32 base,unsigned int size)69 static int __init config_pcmcia_cs(unsigned int cs,
70 u32 base, unsigned int size)
71 {
72 int ret;
73
74 ret = bcm63xx_set_cs_status(cs, 0);
75 if (!ret)
76 ret = bcm63xx_set_cs_base(cs, base, size);
77 if (!ret)
78 ret = bcm63xx_set_cs_status(cs, 1);
79 return ret;
80 }
81
82 static const struct {
83 unsigned int cs;
84 unsigned int base;
85 unsigned int size;
86 } pcmcia_cs[3] __initconst = {
87 {
88 .cs = MPI_CS_PCMCIA_COMMON,
89 .base = BCM_PCMCIA_COMMON_BASE_PA,
90 .size = BCM_PCMCIA_COMMON_SIZE
91 },
92 {
93 .cs = MPI_CS_PCMCIA_ATTR,
94 .base = BCM_PCMCIA_ATTR_BASE_PA,
95 .size = BCM_PCMCIA_ATTR_SIZE
96 },
97 {
98 .cs = MPI_CS_PCMCIA_IO,
99 .base = BCM_PCMCIA_IO_BASE_PA,
100 .size = BCM_PCMCIA_IO_SIZE
101 },
102 };
103
bcm63xx_pcmcia_register(void)104 int __init bcm63xx_pcmcia_register(void)
105 {
106 int ret, i;
107
108 if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358())
109 return 0;
110
111 /* use correct pcmcia ready gpio depending on processor */
112 switch (bcm63xx_get_cpu_id()) {
113 case BCM6348_CPU_ID:
114 pd.ready_gpio = 22;
115 break;
116
117 case BCM6358_CPU_ID:
118 pd.ready_gpio = 18;
119 break;
120
121 default:
122 return -ENODEV;
123 }
124
125 pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA);
126 pcmcia_resources[0].end = pcmcia_resources[0].start +
127 RSET_PCMCIA_SIZE - 1;
128 pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA);
129
130 /* configure pcmcia chip selects */
131 for (i = 0; i < 3; i++) {
132 ret = config_pcmcia_cs(pcmcia_cs[i].cs,
133 pcmcia_cs[i].base,
134 pcmcia_cs[i].size);
135 if (ret)
136 goto out_err;
137 }
138
139 return platform_device_register(&bcm63xx_pcmcia_device);
140
141 out_err:
142 pr_err("unable to set pcmcia chip select\n");
143 return ret;
144 }
145