projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d459bfe0 | 1 | /* |
| 5b74c676 | 2 | * arch/arm/plat-omap/include/mach/clockdomain.h |
| d459bfe0 PW |
3 | * |
| 4 | * OMAP2/3 clockdomain framework functions | |
| 5 | * | |
| 6 | * Copyright (C) 2008 Texas Instruments, Inc. | |
| 7 | * Copyright (C) 2008 Nokia Corporation | |
| 8 | * | |
| 9 | * Written by Paul Walmsley | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or modify | |
| 12 | * it under the terms of the GNU General Public License version 2 as | |
| 13 | * published by the Free Software Foundation. | |
| 14 | */ | |
| 15 | ||
| 16 | #ifndef __ASM_ARM_ARCH_OMAP_CLOCKDOMAIN_H | |
| 17 | #define __ASM_ARM_ARCH_OMAP_CLOCKDOMAIN_H | |
| 18 | ||
| 19 | #include <mach/powerdomain.h> | |
| 20 | #include <mach/clock.h> | |
| 21 | #include <mach/cpu.h> | |
| 22 | ||
| 23 | /* Clockdomain capability flags */ | |
| 24 | #define CLKDM_CAN_FORCE_SLEEP (1 << 0) | |
| 25 | #define CLKDM_CAN_FORCE_WAKEUP (1 << 1) | |
| 26 | #define CLKDM_CAN_ENABLE_AUTO (1 << 2) | |
| 27 | #define CLKDM_CAN_DISABLE_AUTO (1 << 3) | |
| 28 | ||
| 29 | #define CLKDM_CAN_HWSUP (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_DISABLE_AUTO) | |
| 30 | #define CLKDM_CAN_SWSUP (CLKDM_CAN_FORCE_SLEEP | CLKDM_CAN_FORCE_WAKEUP) | |
| 31 | #define CLKDM_CAN_HWSUP_SWSUP (CLKDM_CAN_SWSUP | CLKDM_CAN_HWSUP) | |
| 32 | ||
| 33 | /* OMAP24XX CM_CLKSTCTRL_*.AUTOSTATE_* register bit values */ | |
| 34 | #define OMAP24XX_CLKSTCTRL_DISABLE_AUTO 0x0 | |
| 35 | #define OMAP24XX_CLKSTCTRL_ENABLE_AUTO 0x1 | |
| 36 | ||
| 37 | /* OMAP3XXX CM_CLKSTCTRL_*.CLKTRCTRL_* register bit values */ | |
| 38 | #define OMAP34XX_CLKSTCTRL_DISABLE_AUTO 0x0 | |
| 39 | #define OMAP34XX_CLKSTCTRL_FORCE_SLEEP 0x1 | |
| 40 | #define OMAP34XX_CLKSTCTRL_FORCE_WAKEUP 0x2 | |
| 41 | #define OMAP34XX_CLKSTCTRL_ENABLE_AUTO 0x3 | |
| 42 | ||
| 43 | /* | |
| 44 | * struct clkdm_pwrdm_autodep - a powerdomain that should have wkdeps | |
| 45 | * and sleepdeps added when a powerdomain should stay active in hwsup mode; | |
| 46 | * and conversely, removed when the powerdomain should be allowed to go | |
| 47 | * inactive in hwsup mode. | |
| 48 | */ | |
| 49 | struct clkdm_pwrdm_autodep { | |
| 50 | ||
| 5b74c676 PW |
51 | union { |
| 52 | /* Name of the powerdomain to add a wkdep/sleepdep on */ | |
| 53 | const char *name; | |
| d459bfe0 | 54 | |
| 5b74c676 PW |
55 | /* Powerdomain pointer (looked up at clkdm_init() time) */ |
| 56 | struct powerdomain *ptr; | |
| 57 | } pwrdm; | |
| d459bfe0 PW |
58 | |
| 59 | /* OMAP chip types that this clockdomain dep is valid on */ | |
| 60 | const struct omap_chip_id omap_chip; | |
| 61 | ||
| 62 | }; | |
| 63 | ||
| 64 | struct clockdomain { | |
| 65 | ||
| 66 | /* Clockdomain name */ | |
| 67 | const char *name; | |
| 68 | ||
| 5b74c676 PW |
69 | union { |
| 70 | /* Powerdomain enclosing this clockdomain */ | |
| 71 | const char *name; | |
| 72 | ||
| 73 | /* Powerdomain pointer assigned at clkdm_register() */ | |
| 74 | struct powerdomain *ptr; | |
| 75 | } pwrdm; | |
| d459bfe0 PW |
76 | |
| 77 | /* CLKTRCTRL/AUTOSTATE field mask in CM_CLKSTCTRL reg */ | |
| 78 | const u16 clktrctrl_mask; | |
| 79 | ||
| 80 | /* Clockdomain capability flags */ | |
| 81 | const u8 flags; | |
| 82 | ||
| 83 | /* OMAP chip types that this clockdomain is valid on */ | |
| 84 | const struct omap_chip_id omap_chip; | |
| 85 | ||
| 86 | /* Usecount tracking */ | |
| 87 | atomic_t usecount; | |
| 88 | ||
| d459bfe0 PW |
89 | struct list_head node; |
| 90 | ||
| 91 | }; | |
| 92 | ||
| 93 | void clkdm_init(struct clockdomain **clkdms, struct clkdm_pwrdm_autodep *autodeps); | |
| 94 | int clkdm_register(struct clockdomain *clkdm); | |
| 95 | int clkdm_unregister(struct clockdomain *clkdm); | |
| 96 | struct clockdomain *clkdm_lookup(const char *name); | |
| 97 | ||
| a23456e9 PDS |
98 | int clkdm_for_each(int (*fn)(struct clockdomain *clkdm, void *user), |
| 99 | void *user); | |
| d459bfe0 PW |
100 | struct powerdomain *clkdm_get_pwrdm(struct clockdomain *clkdm); |
| 101 | ||
| 102 | void omap2_clkdm_allow_idle(struct clockdomain *clkdm); | |
| 103 | void omap2_clkdm_deny_idle(struct clockdomain *clkdm); | |
| 104 | ||
| 105 | int omap2_clkdm_wakeup(struct clockdomain *clkdm); | |
| 106 | int omap2_clkdm_sleep(struct clockdomain *clkdm); | |
| 107 | ||
| 108 | int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk); | |
| 109 | int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk); | |
| 110 | ||
| 111 | #endif |