diff options
Diffstat (limited to 'arch/arm/mach-omap2/clockdomain.h')
| -rw-r--r-- | arch/arm/mach-omap2/clockdomain.h | 80 |
1 files changed, 60 insertions, 20 deletions
diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h index 5823584d9cd..82c37b1becc 100644 --- a/arch/arm/mach-omap2/clockdomain.h +++ b/arch/arm/mach-omap2/clockdomain.h @@ -1,9 +1,7 @@ /* - * arch/arm/plat-omap/include/mach/clockdomain.h - * * OMAP2/3 clockdomain framework functions * - * Copyright (C) 2008 Texas Instruments, Inc. + * Copyright (C) 2008, 2012 Texas Instruments, Inc. * Copyright (C) 2008-2011 Nokia Corporation * * Paul Walmsley @@ -19,8 +17,7 @@ #include <linux/init.h> #include "powerdomain.h" -#include <plat/clock.h> -#include <plat/cpu.h> +#include "clock.h" /* * Clockdomain flags @@ -29,12 +26,31 @@ * * CLKDM_NO_AUTODEPS: Prevent "autodeps" from being added/removed from this * clockdomain. (Currently, this applies to OMAP3 clockdomains only.) + * CLKDM_ACTIVE_WITH_MPU: The PRCM guarantees that this clockdomain is + * active whenever the MPU is active. True for interconnects and + * the WKUP clockdomains. + * CLKDM_MISSING_IDLE_REPORTING: The idle status of the IP blocks and + * clocks inside this clockdomain are not taken into account by + * the PRCM when determining whether the clockdomain is idle. + * Without this flag, if the clockdomain is set to + * hardware-supervised idle mode, the PRCM may transition the + * enclosing powerdomain to a low power state, even when devices + * inside the clockdomain and powerdomain are in use. (An example + * of such a clockdomain is the EMU clockdomain on OMAP3/4.) If + * this flag is set, and the clockdomain does not support the + * force-sleep mode, then the HW_AUTO mode will be used to put the + * clockdomain to sleep. Similarly, if the clockdomain supports + * the force-wakeup mode, then it will be used whenever a clock or + * IP block inside the clockdomain is active, rather than the + * HW_AUTO mode. */ #define CLKDM_CAN_FORCE_SLEEP (1 << 0) #define CLKDM_CAN_FORCE_WAKEUP (1 << 1) #define CLKDM_CAN_ENABLE_AUTO (1 << 2) #define CLKDM_CAN_DISABLE_AUTO (1 << 3) #define CLKDM_NO_AUTODEPS (1 << 4) +#define CLKDM_ACTIVE_WITH_MPU (1 << 5) +#define CLKDM_MISSING_IDLE_REPORTING (1 << 6) #define CLKDM_CAN_HWSUP (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_DISABLE_AUTO) #define CLKDM_CAN_SWSUP (CLKDM_CAN_FORCE_SLEEP | CLKDM_CAN_FORCE_WAKEUP) @@ -43,7 +59,6 @@ /** * struct clkdm_autodep - clkdm deps to add when entering/exiting hwsup mode * @clkdm: clockdomain to add wkdep+sleepdep on - set name member only - * @omap_chip: OMAP chip types that this autodep is valid on * * A clockdomain that should have wkdeps and sleepdeps added when a * clockdomain should stay active in hwsup mode; and conversely, @@ -58,14 +73,12 @@ struct clkdm_autodep { const char *name; struct clockdomain *ptr; } clkdm; - const struct omap_chip_id omap_chip; }; /** * struct clkdm_dep - encode dependencies between clockdomains * @clkdm_name: clockdomain name * @clkdm: pointer to the struct clockdomain of @clkdm_name - * @omap_chip: OMAP chip types that this dependency is valid on * @wkdep_usecount: Number of wakeup dependencies causing this clkdm to wake * @sleepdep_usecount: Number of sleep deps that could prevent clkdm from idle * @@ -77,11 +90,15 @@ struct clkdm_autodep { struct clkdm_dep { const char *clkdm_name; struct clockdomain *clkdm; - atomic_t wkdep_usecount; - atomic_t sleepdep_usecount; - const struct omap_chip_id omap_chip; + s16 wkdep_usecount; + s16 sleepdep_usecount; }; +/* Possible flags for struct clockdomain._flags */ +#define _CLKDM_FLAG_HWSUP_ENABLED BIT(0) + +struct omap_hwmod; + /** * struct clockdomain - OMAP clockdomain * @name: clockdomain name @@ -89,13 +106,13 @@ struct clkdm_dep { * @clktrctrl_reg: CLKSTCTRL reg for the given clock domain * @clktrctrl_mask: CLKTRCTRL/AUTOSTATE field mask in CM_CLKSTCTRL reg * @flags: Clockdomain capability flags + * @_flags: Flags for use only by internal clockdomain code * @dep_bit: Bit shift of this clockdomain's PM_WKDEP/CM_SLEEPDEP bit * @prcm_partition: (OMAP4 only) PRCM partition ID for this clkdm's registers * @cm_inst: (OMAP4 only) CM instance register offset * @clkdm_offs: (OMAP4 only) CM clockdomain register offset * @wkdep_srcs: Clockdomains that can be told to wake this powerdomain up * @sleepdep_srcs: Clockdomains that can be told to keep this clkdm from inact - * @omap_chip: OMAP chip types that this clockdomain is valid on * @usecount: Usecount tracking * @node: list_head to link all clockdomains together * @@ -113,14 +130,14 @@ struct clockdomain { } pwrdm; const u16 clktrctrl_mask; const u8 flags; + u8 _flags; const u8 dep_bit; const u8 prcm_partition; - const s16 cm_inst; + const u16 cm_inst; const u16 clkdm_offs; struct clkdm_dep *wkdep_srcs; struct clkdm_dep *sleepdep_srcs; - const struct omap_chip_id omap_chip; - atomic_t usecount; + int usecount; struct list_head node; }; @@ -158,8 +175,11 @@ struct clkdm_ops { int (*clkdm_clk_disable)(struct clockdomain *clkdm); }; -void clkdm_init(struct clockdomain **clkdms, struct clkdm_autodep *autodeps, - struct clkdm_ops *custom_funcs); +int clkdm_register_platform_funcs(struct clkdm_ops *co); +int clkdm_register_autodeps(struct clkdm_autodep *ia); +int clkdm_register_clkdms(struct clockdomain **c); +int clkdm_complete_init(void); + struct clockdomain *clkdm_lookup(const char *name); int clkdm_for_each(int (*fn)(struct clockdomain *clkdm, void *user), @@ -175,23 +195,43 @@ int clkdm_del_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2); int clkdm_read_sleepdep(struct clockdomain *clkdm1, struct clockdomain *clkdm2); int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm); +void clkdm_allow_idle_nolock(struct clockdomain *clkdm); void clkdm_allow_idle(struct clockdomain *clkdm); +void clkdm_deny_idle_nolock(struct clockdomain *clkdm); void clkdm_deny_idle(struct clockdomain *clkdm); +bool clkdm_in_hwsup(struct clockdomain *clkdm); +bool clkdm_missing_idle_reporting(struct clockdomain *clkdm); +int clkdm_wakeup_nolock(struct clockdomain *clkdm); int clkdm_wakeup(struct clockdomain *clkdm); +int clkdm_sleep_nolock(struct clockdomain *clkdm); int clkdm_sleep(struct clockdomain *clkdm); int clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk); int clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk); +int clkdm_hwmod_enable(struct clockdomain *clkdm, struct omap_hwmod *oh); +int clkdm_hwmod_disable(struct clockdomain *clkdm, struct omap_hwmod *oh); -extern void __init omap2xxx_clockdomains_init(void); +extern void __init omap242x_clockdomains_init(void); +extern void __init omap243x_clockdomains_init(void); extern void __init omap3xxx_clockdomains_init(void); +extern void __init am33xx_clockdomains_init(void); extern void __init omap44xx_clockdomains_init(void); -extern void _clkdm_add_autodeps(struct clockdomain *clkdm); -extern void _clkdm_del_autodeps(struct clockdomain *clkdm); +extern void __init omap54xx_clockdomains_init(void); +extern void __init dra7xx_clockdomains_init(void); +void am43xx_clockdomains_init(void); + +extern void clkdm_add_autodeps(struct clockdomain *clkdm); +extern void clkdm_del_autodeps(struct clockdomain *clkdm); extern struct clkdm_ops omap2_clkdm_operations; extern struct clkdm_ops omap3_clkdm_operations; extern struct clkdm_ops omap4_clkdm_operations; +extern struct clkdm_ops am33xx_clkdm_operations; +extern struct clkdm_ops am43xx_clkdm_operations; + +extern struct clkdm_dep gfx_24xx_wkdeps[]; +extern struct clkdm_dep dsp_24xx_wkdeps[]; +extern struct clockdomain wkup_common_clkdm; #endif |