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 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
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	pr_err("unable to set pcmcia chip select\n");
143	return ret;
144}
145