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authorMaxime Bizon <mbizon@freebox.fr>2009-09-28 08:49:43 -0400
committerRalf Baechle <ralf@linux-mips.org>2009-09-30 15:47:01 -0400
commit553d6d5f5b84f11fad8043688137dac96df1a06d (patch)
tree39613a02feb6617d619c84045d3c41e479a566b5 /arch/mips/bcm63xx/dev-pcmcia.c
parent971842677c5a6c1dd15d9a80b67bf0085686e574 (diff)
MIPS: BCM63xx: Add PCMCIA & Cardbus support.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr> Reviewed-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/bcm63xx/dev-pcmcia.c')
-rw-r--r--arch/mips/bcm63xx/dev-pcmcia.c144
1 files changed, 144 insertions, 0 deletions
diff --git a/arch/mips/bcm63xx/dev-pcmcia.c b/arch/mips/bcm63xx/dev-pcmcia.c
new file mode 100644
index 000000000000..de4d917fd54d
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-pcmcia.c
@@ -0,0 +1,144 @@
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
19static 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
57static struct bcm63xx_pcmcia_platform_data pd;
58
59static 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
69static 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
82static const __initdata struct {
83 unsigned int cs;
84 unsigned int base;
85 unsigned int size;
86} pcmcia_cs[3] = {
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
104int __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
141out_err:
142 printk(KERN_ERR "unable to set pcmcia chip select\n");
143 return ret;
144}