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71348bca PW |
1 | /* |
2 | * OMAP4 CM module functions | |
3 | * | |
4 | * Copyright (C) 2009 Nokia Corporation | |
5 | * Paul Walmsley | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/types.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/spinlock.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/errno.h> | |
19 | #include <linux/err.h> | |
20 | #include <linux/io.h> | |
21 | ||
22 | #include <asm/atomic.h> | |
23 | ||
24 | #include "cm.h" | |
71348bca PW |
25 | |
26 | /* XXX move this to cm.h */ | |
27 | /* MAX_MODULE_READY_TIME: max milliseconds for module to leave idle */ | |
28 | #define MAX_MODULE_READY_TIME 20000 | |
29 | ||
30 | /* | |
31 | * OMAP4_PRCM_CM_CLKCTRL_IDLEST_MASK: isolates the IDLEST field in the | |
32 | * CM_CLKCTRL register. | |
33 | */ | |
34 | #define OMAP4_PRCM_CM_CLKCTRL_IDLEST_MASK (0x2 << 16) | |
35 | ||
36 | /* | |
37 | * OMAP4 prcm_mod u32 fields contain packed data: the CM ID in bit 16 and | |
38 | * the PRCM module offset address (from the CM module base) in bits 15-0. | |
39 | */ | |
40 | #define OMAP4_PRCM_MOD_CM_ID_SHIFT 16 | |
41 | #define OMAP4_PRCM_MOD_OFFS_MASK 0xffff | |
42 | ||
43 | /** | |
44 | * omap4_cm_wait_idlest_ready - wait for a module to leave idle or standby | |
45 | * @prcm_mod: PRCM module offset (XXX example) | |
46 | * @prcm_dev_offs: PRCM device offset (e.g. MCASP XXX example) | |
47 | * | |
48 | * XXX document | |
49 | */ | |
50 | int omap4_cm_wait_idlest_ready(u32 prcm_mod, u8 prcm_dev_offs) | |
51 | { | |
61f04ee8 TL |
52 | /* FIXME: Add clock manager related code */ |
53 | return 0; | |
71348bca PW |
54 | } |
55 |