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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 | ||
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 | ||
4a043d79 | 82 | static const struct { |
553d6d5f MB |
83 | unsigned int cs; |
84 | unsigned int base; | |
85 | unsigned int size; | |
4a043d79 | 86 | } pcmcia_cs[3] __initconst = { |
553d6d5f MB |
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 | ||
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: | |
63893ea5 | 142 | pr_err("unable to set pcmcia chip select\n"); |
553d6d5f MB |
143 | return ret; |
144 | } |