diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 08:15:29 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-08 08:15:29 -0800 |
commit | 1c496784a0d317535f846ddb2c93a08ba936266b (patch) | |
tree | 6d0225860032f263b6d95a3e55c364a1a5f55ec1 /arch/arm/plat-omap/include/plat/clockdomain.h | |
parent | adf9904dc774f23f04a5425f0198483ea61f878b (diff) | |
parent | 9a01609e1885b827b979d6d9dd86f43208a9e5fc (diff) |
Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (149 commits)
arm: omap: Add omap3_defconfig
AM35xx: Defconfig for AM3517 EVM board
AM35xx: Add support for AM3517 EVM board
omap: 3630sdp: defconfig creation
omap: 3630sdp: introduce 3630 sdp board support
omap3: Add defconfig for IGEP v2 board
omap3: Add minimal IGEP v2 support
omap3: Add CompuLab CM-T35 defconfig
omap3: Add CompuLab CM-T35 board support
omap3: rx51: Add wl1251 wlan driver support
omap3: rx51: Add SDRAM init
omap1: Add default kernel configuration for Herald
omap1: Add board support and LCD for HTC Herald
omap: zoom2: update defconfig for LL_DEBUG_NONE
omap: zoom3: defconfig creation
omap3: zoom: Introduce zoom3 board support
omap3: zoom: Drop i2c-1 speed to 2400
omap3: zoom: rename zoom2 name to generic zoom
omap3: zoom: split board file for software reuse
omap3evm: MIgrate to smsc911x ethernet driver
...
Fix trivial conflict (two unrelated config options added next to each
other) in arch/arm/mach-omap2/Makefile
Diffstat (limited to 'arch/arm/plat-omap/include/plat/clockdomain.h')
-rw-r--r-- | arch/arm/plat-omap/include/plat/clockdomain.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/plat/clockdomain.h b/arch/arm/plat-omap/include/plat/clockdomain.h new file mode 100644 index 00000000000..eb734826e64 --- /dev/null +++ b/arch/arm/plat-omap/include/plat/clockdomain.h @@ -0,0 +1,111 @@ +/* + * arch/arm/plat-omap/include/mach/clockdomain.h + * + * OMAP2/3 clockdomain framework functions + * + * Copyright (C) 2008 Texas Instruments, Inc. + * Copyright (C) 2008 Nokia Corporation + * + * Written by Paul Walmsley + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_ARM_ARCH_OMAP_CLOCKDOMAIN_H +#define __ASM_ARM_ARCH_OMAP_CLOCKDOMAIN_H + +#include <plat/powerdomain.h> +#include <plat/clock.h> +#include <plat/cpu.h> + +/* Clockdomain capability flags */ +#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_CAN_HWSUP (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_DISABLE_AUTO) +#define CLKDM_CAN_SWSUP (CLKDM_CAN_FORCE_SLEEP | CLKDM_CAN_FORCE_WAKEUP) +#define CLKDM_CAN_HWSUP_SWSUP (CLKDM_CAN_SWSUP | CLKDM_CAN_HWSUP) + +/* OMAP24XX CM_CLKSTCTRL_*.AUTOSTATE_* register bit values */ +#define OMAP24XX_CLKSTCTRL_DISABLE_AUTO 0x0 +#define OMAP24XX_CLKSTCTRL_ENABLE_AUTO 0x1 + +/* OMAP3XXX CM_CLKSTCTRL_*.CLKTRCTRL_* register bit values */ +#define OMAP34XX_CLKSTCTRL_DISABLE_AUTO 0x0 +#define OMAP34XX_CLKSTCTRL_FORCE_SLEEP 0x1 +#define OMAP34XX_CLKSTCTRL_FORCE_WAKEUP 0x2 +#define OMAP34XX_CLKSTCTRL_ENABLE_AUTO 0x3 + +/* + * struct clkdm_pwrdm_autodep - a powerdomain that should have wkdeps + * and sleepdeps added when a powerdomain should stay active in hwsup mode; + * and conversely, removed when the powerdomain should be allowed to go + * inactive in hwsup mode. + */ +struct clkdm_pwrdm_autodep { + + union { + /* Name of the powerdomain to add a wkdep/sleepdep on */ + const char *name; + + /* Powerdomain pointer (looked up at clkdm_init() time) */ + struct powerdomain *ptr; + } pwrdm; + + /* OMAP chip types that this clockdomain dep is valid on */ + const struct omap_chip_id omap_chip; + +}; + +struct clockdomain { + + /* Clockdomain name */ + const char *name; + + union { + /* Powerdomain enclosing this clockdomain */ + const char *name; + + /* Powerdomain pointer assigned at clkdm_register() */ + struct powerdomain *ptr; + } pwrdm; + + /* CLKTRCTRL/AUTOSTATE field mask in CM_CLKSTCTRL reg */ + const u16 clktrctrl_mask; + + /* Clockdomain capability flags */ + const u8 flags; + + /* OMAP chip types that this clockdomain is valid on */ + const struct omap_chip_id omap_chip; + + /* Usecount tracking */ + atomic_t usecount; + + struct list_head node; + +}; + +void clkdm_init(struct clockdomain **clkdms, struct clkdm_pwrdm_autodep *autodeps); +int clkdm_register(struct clockdomain *clkdm); +int clkdm_unregister(struct clockdomain *clkdm); +struct clockdomain *clkdm_lookup(const char *name); + +int clkdm_for_each(int (*fn)(struct clockdomain *clkdm, void *user), + void *user); +struct powerdomain *clkdm_get_pwrdm(struct clockdomain *clkdm); + +void omap2_clkdm_allow_idle(struct clockdomain *clkdm); +void omap2_clkdm_deny_idle(struct clockdomain *clkdm); + +int omap2_clkdm_wakeup(struct clockdomain *clkdm); +int omap2_clkdm_sleep(struct clockdomain *clkdm); + +int omap2_clkdm_clk_enable(struct clockdomain *clkdm, struct clk *clk); +int omap2_clkdm_clk_disable(struct clockdomain *clkdm, struct clk *clk); + +#endif |