2 * arch/ppc/syslib/ppc_sys.c
4 * PPC System library functions
6 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
8 * Copyright 2005 Freescale Semiconductor Inc.
9 * Copyright 2005 MontaVista, Inc. by Vitaly Bordug <vbordug@ru.mvista.com>
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 #include <linux/string.h>
18 #include <asm/ppc_sys.h>
20 int (*ppc_sys_device_fixup
) (struct platform_device
* pdev
);
22 static int ppc_sys_inited
;
24 void __init
identify_ppc_sys_by_id(u32 id
)
28 if ((ppc_sys_specs
[i
].mask
& id
) == ppc_sys_specs
[i
].value
)
33 cur_ppc_sys_spec
= &ppc_sys_specs
[i
];
38 void __init
identify_ppc_sys_by_name(char *name
)
41 while (ppc_sys_specs
[i
].ppc_sys_name
[0])
43 if (!strcmp(ppc_sys_specs
[i
].ppc_sys_name
, name
))
47 cur_ppc_sys_spec
= &ppc_sys_specs
[i
];
51 static int __init
count_sys_specs(void)
54 while (ppc_sys_specs
[i
].ppc_sys_name
[0])
59 static int __init
find_chip_by_name_and_id(char *name
, u32 id
)
64 unsigned int dups
= 0;
66 unsigned char matched
[count_sys_specs()];
68 while (ppc_sys_specs
[i
].ppc_sys_name
[0]) {
69 if (!strcmp(ppc_sys_specs
[i
].ppc_sys_name
, name
))
77 for (i
= 0; i
< j
; i
++) {
78 if ((ppc_sys_specs
[matched
[i
]].mask
& id
) ==
79 ppc_sys_specs
[matched
[i
]].value
) {
84 ret
= (dups
== 1) ? ret
: (-1 * dups
);
89 void __init
identify_ppc_sys_by_name_and_id(char *name
, u32 id
)
91 int i
= find_chip_by_name_and_id(name
, id
);
93 cur_ppc_sys_spec
= &ppc_sys_specs
[i
];
96 /* Update all memory resources by paddr, call before platform_device_register */
98 ppc_sys_fixup_mem_resource(struct platform_device
*pdev
, phys_addr_t paddr
)
101 for (i
= 0; i
< pdev
->num_resources
; i
++) {
102 struct resource
*r
= &pdev
->resource
[i
];
103 if ((r
->flags
& IORESOURCE_MEM
) == IORESOURCE_MEM
) {
110 /* Get platform_data pointer out of platform device, call before platform_device_register */
111 void *__init
ppc_sys_get_pdata(enum ppc_sys_devices dev
)
113 return ppc_sys_platform_devices
[dev
].dev
.platform_data
;
116 void ppc_sys_device_remove(enum ppc_sys_devices dev
)
120 if (ppc_sys_inited
) {
121 platform_device_unregister(&ppc_sys_platform_devices
[dev
]);
123 if (cur_ppc_sys_spec
== NULL
)
125 for (i
= 0; i
< cur_ppc_sys_spec
->num_devices
; i
++)
126 if (cur_ppc_sys_spec
->device_list
[i
] == dev
)
127 cur_ppc_sys_spec
->device_list
[i
] = -1;
131 static int __init
ppc_sys_init(void)
133 unsigned int i
, dev_id
, ret
= 0;
135 BUG_ON(cur_ppc_sys_spec
== NULL
);
137 for (i
= 0; i
< cur_ppc_sys_spec
->num_devices
; i
++) {
138 dev_id
= cur_ppc_sys_spec
->device_list
[i
];
140 if (ppc_sys_device_fixup
!= NULL
)
141 ppc_sys_device_fixup(&ppc_sys_platform_devices
143 if (platform_device_register
144 (&ppc_sys_platform_devices
[dev_id
])) {
147 "unable to register device %d\n",
157 subsys_initcall(ppc_sys_init
);