| /* |
| * OMAP2/3/4 powerdomain control |
| * |
| * Copyright (C) 2007-2008, 2010 Texas Instruments, Inc. |
| * Copyright (C) 2007-2011 Nokia Corporation |
| * |
| * 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. |
| * |
| * XXX This should be moved to the mach-omap2/ directory at the earliest |
| * opportunity. |
| */ |
| |
| #ifndef __ARCH_ARM_MACH_OMAP2_POWERDOMAIN_H |
| #define __ARCH_ARM_MACH_OMAP2_POWERDOMAIN_H |
| |
| #include <linux/types.h> |
| #include <linux/list.h> |
| |
| #include <linux/atomic.h> |
| |
| #include <plat/cpu.h> |
| |
| /* Powerdomain basic power states */ |
| #define PWRDM_POWER_OFF 0x0 |
| #define PWRDM_POWER_RET 0x1 |
| #define PWRDM_POWER_INACTIVE 0x2 |
| #define PWRDM_POWER_ON 0x3 |
| |
| #define PWRDM_MAX_PWRSTS 4 |
| |
| /* Powerdomain allowable state bitfields */ |
| #define PWRSTS_ON (1 << PWRDM_POWER_ON) |
| #define PWRSTS_INACTIVE (1 << PWRDM_POWER_INACTIVE) |
| #define PWRSTS_RET (1 << PWRDM_POWER_RET) |
| #define PWRSTS_OFF (1 << PWRDM_POWER_OFF) |
| |
| #define PWRSTS_OFF_ON (PWRSTS_OFF | PWRSTS_ON) |
| #define PWRSTS_OFF_RET (PWRSTS_OFF | PWRSTS_RET) |
| #define PWRSTS_RET_ON (PWRSTS_RET | PWRSTS_ON) |
| #define PWRSTS_OFF_RET_ON (PWRSTS_OFF_RET | PWRSTS_ON) |
| |
| |
| /* Powerdomain flags */ |
| #define PWRDM_HAS_HDWR_SAR (1 << 0) /* hardware save-and-restore support */ |
| #define PWRDM_HAS_MPU_QUIRK (1 << 1) /* MPU pwr domain has MEM bank 0 bits |
| * in MEM bank 1 position. This is |
| * true for OMAP3430 |
| */ |
| #define PWRDM_HAS_LOWPOWERSTATECHANGE (1 << 2) /* |
| * support to transition from a |
| * sleep state to a lower sleep |
| * state without waking up the |
| * powerdomain |
| */ |
| |
| /* |
| * Number of memory banks that are power-controllable. On OMAP4430, the |
| * maximum is 5. |
| */ |
| #define PWRDM_MAX_MEM_BANKS 5 |
| |
| /* |
| * Maximum number of clockdomains that can be associated with a powerdomain. |
| * CORE powerdomain on OMAP4 is the worst case |
| */ |
| #define PWRDM_MAX_CLKDMS 9 |
| |
| /* XXX A completely arbitrary number. What is reasonable here? */ |
| #define PWRDM_TRANSITION_BAILOUT 100000 |
| |
| struct clockdomain; |
| struct powerdomain; |
| |
| /** |
| * struct powerdomain - OMAP powerdomain |
| * @name: Powerdomain name |
| * @omap_chip: represents the OMAP chip types containing this pwrdm |
| * @prcm_offs: the address offset from CM_BASE/PRM_BASE |
| * @prcm_partition: (OMAP4 only) the PRCM partition ID containing @prcm_offs |
| * @pwrsts: Possible powerdomain power states |
| * @pwrsts_logic_ret: Possible logic power states when pwrdm in RETENTION |
| * @flags: Powerdomain flags |
| * @banks: Number of software-controllable memory banks in this powerdomain |
| * @pwrsts_mem_ret: Possible memory bank pwrstates when pwrdm in RETENTION |
| * @pwrsts_mem_on: Possible memory bank pwrstates when pwrdm in ON |
| * @pwrdm_clkdms: Clockdomains in this powerdomain |
| * @node: list_head linking all powerdomains |
| * @state: |
| * @state_counter: |
| * @timer: |
| * @state_timer: |
| * |
| * @prcm_partition possible values are defined in mach-omap2/prcm44xx.h. |
| */ |
| struct powerdomain { |
| const char *name; |
| const struct omap_chip_id omap_chip; |
| const s16 prcm_offs; |
| const u8 pwrsts; |
| const u8 pwrsts_logic_ret; |
| const u8 flags; |
| const u8 banks; |
| const u8 pwrsts_mem_ret[PWRDM_MAX_MEM_BANKS]; |
| const u8 pwrsts_mem_on[PWRDM_MAX_MEM_BANKS]; |
| const u8 prcm_partition; |
| struct clockdomain *pwrdm_clkdms[PWRDM_MAX_CLKDMS]; |
| struct list_head node; |
| int state; |
| unsigned state_counter[PWRDM_MAX_PWRSTS]; |
| unsigned ret_logic_off_counter; |
| unsigned ret_mem_off_counter[PWRDM_MAX_MEM_BANKS]; |
| |
| #ifdef CONFIG_PM_DEBUG |
| s64 timer; |
| s64 state_timer[PWRDM_MAX_PWRSTS]; |
| #endif |
| }; |
| |
| /** |
| * struct pwrdm_ops - Arch specific function implementations |
| * @pwrdm_set_next_pwrst: Set the target power state for a pd |
| * @pwrdm_read_next_pwrst: Read the target power state set for a pd |
| * @pwrdm_read_pwrst: Read the current power state of a pd |
| * @pwrdm_read_prev_pwrst: Read the prev power state entered by the pd |
| * @pwrdm_set_logic_retst: Set the logic state in RET for a pd |
| * @pwrdm_set_mem_onst: Set the Memory state in ON for a pd |
| * @pwrdm_set_mem_retst: Set the Memory state in RET for a pd |
| * @pwrdm_read_logic_pwrst: Read the current logic state of a pd |
| * @pwrdm_read_prev_logic_pwrst: Read the previous logic state entered by a pd |
| * @pwrdm_read_logic_retst: Read the logic state in RET for a pd |
| * @pwrdm_read_mem_pwrst: Read the current memory state of a pd |
| * @pwrdm_read_prev_mem_pwrst: Read the previous memory state entered by a pd |
| * @pwrdm_read_mem_retst: Read the memory state in RET for a pd |
| * @pwrdm_clear_all_prev_pwrst: Clear all previous power states logged for a pd |
| * @pwrdm_enable_hdwr_sar: Enable Hardware Save-Restore feature for the pd |
| * @pwrdm_disable_hdwr_sar: Disable Hardware Save-Restore feature for a pd |
| * @pwrdm_set_lowpwrstchange: Enable pd transitions from a shallow to deep sleep |
| * @pwrdm_wait_transition: Wait for a pd state transition to complete |
| */ |
| struct pwrdm_ops { |
| int (*pwrdm_set_next_pwrst)(struct powerdomain *pwrdm, u8 pwrst); |
| int (*pwrdm_read_next_pwrst)(struct powerdomain *pwrdm); |
| int (*pwrdm_read_pwrst)(struct powerdomain *pwrdm); |
| int (*pwrdm_read_prev_pwrst)(struct powerdomain *pwrdm); |
| int (*pwrdm_set_logic_retst)(struct powerdomain *pwrdm, u8 pwrst); |
| int (*pwrdm_set_mem_onst)(struct powerdomain *pwrdm, u8 bank, u8 pwrst); |
| int (*pwrdm_set_mem_retst)(struct powerdomain *pwrdm, u8 bank, u8 pwrst); |
| int (*pwrdm_read_logic_pwrst)(struct powerdomain *pwrdm); |
| int (*pwrdm_read_prev_logic_pwrst)(struct powerdomain *pwrdm); |
| int (*pwrdm_read_logic_retst)(struct powerdomain *pwrdm); |
| int (*pwrdm_read_mem_pwrst)(struct powerdomain *pwrdm, u8 bank); |
| int (*pwrdm_read_prev_mem_pwrst)(struct powerdomain *pwrdm, u8 bank); |
| int (*pwrdm_read_mem_retst)(struct powerdomain *pwrdm, u8 bank); |
| int (*pwrdm_clear_all_prev_pwrst)(struct powerdomain *pwrdm); |
| int (*pwrdm_enable_hdwr_sar)(struct powerdomain *pwrdm); |
| int (*pwrdm_disable_hdwr_sar)(struct powerdomain *pwrdm); |
| int (*pwrdm_set_lowpwrstchange)(struct powerdomain *pwrdm); |
| int (*pwrdm_wait_transition)(struct powerdomain *pwrdm); |
| }; |
| |
| void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_ops *custom_funcs); |
| |
| struct powerdomain *pwrdm_lookup(const char *name); |
| |
| int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm, void *user), |
| void *user); |
| int pwrdm_for_each_nolock(int (*fn)(struct powerdomain *pwrdm, void *user), |
| void *user); |
| |
| int pwrdm_add_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm); |
| int pwrdm_del_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm); |
| int pwrdm_for_each_clkdm(struct powerdomain *pwrdm, |
| int (*fn)(struct powerdomain *pwrdm, |
| struct clockdomain *clkdm)); |
| |
| int pwrdm_get_mem_bank_count(struct powerdomain *pwrdm); |
| |
| int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst); |
| int pwrdm_read_next_pwrst(struct powerdomain *pwrdm); |
| int pwrdm_read_pwrst(struct powerdomain *pwrdm); |
| int pwrdm_read_prev_pwrst(struct powerdomain *pwrdm); |
| int pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm); |
| |
| int pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst); |
| int pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst); |
| int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst); |
| |
| int pwrdm_read_logic_pwrst(struct powerdomain *pwrdm); |
| int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm); |
| int pwrdm_read_logic_retst(struct powerdomain *pwrdm); |
| int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank); |
| int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank); |
| int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank); |
| |
| int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm); |
| int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm); |
| bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm); |
| |
| int pwrdm_wait_transition(struct powerdomain *pwrdm); |
| |
| int pwrdm_state_switch(struct powerdomain *pwrdm); |
| int pwrdm_clkdm_state_switch(struct clockdomain *clkdm); |
| int pwrdm_pre_transition(void); |
| int pwrdm_post_transition(void); |
| int pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm); |
| u32 pwrdm_get_context_loss_count(struct powerdomain *pwrdm); |
| bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm); |
| |
| extern void omap2xxx_powerdomains_init(void); |
| extern void omap3xxx_powerdomains_init(void); |
| extern void omap44xx_powerdomains_init(void); |
| |
| extern struct pwrdm_ops omap2_pwrdm_operations; |
| extern struct pwrdm_ops omap3_pwrdm_operations; |
| extern struct pwrdm_ops omap4_pwrdm_operations; |
| |
| /* Common Internal functions used across OMAP rev's */ |
| extern u32 omap2_pwrdm_get_mem_bank_onstate_mask(u8 bank); |
| extern u32 omap2_pwrdm_get_mem_bank_retst_mask(u8 bank); |
| extern u32 omap2_pwrdm_get_mem_bank_stst_mask(u8 bank); |
| |
| extern struct powerdomain wkup_omap2_pwrdm; |
| extern struct powerdomain gfx_omap2_pwrdm; |
| |
| |
| #endif |
