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authorAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
committerAnton Arapov <anton@redhat.com>2012-04-16 10:05:28 +0200
commitb4b6116a13633898cf868f2f103c96a90c4c20f8 (patch)
tree93d1b7e2cfcdf473d8d4ff3ad141fa864f8491f6 /arch/arm/mach-omap2/powerdomain.h
parentedd4be777c953e5faafc80d091d3084b4343f5d3 (diff)
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fedora kernel: d9aad82f3319f3cfd1aebc01234254ef0c37ad84v3.3.2-1
Signed-off-by: Anton Arapov <anton@redhat.com>
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.h')
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diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h
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+/*
+ * 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>
+
+#include "voltage.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
+ * @voltdm: voltagedomain containing this powerdomain
+ * @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
+ * @voltdm_node: list_head linking all powerdomains in a voltagedomain
+ * @state:
+ * @state_counter:
+ * @timer:
+ * @state_timer:
+ *
+ * @prcm_partition possible values are defined in mach-omap2/prcm44xx.h.
+ */
+struct powerdomain {
+ const char *name;
+ union {
+ const char *name;
+ struct voltagedomain *ptr;
+ } voltdm;
+ 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;
+ struct list_head voltdm_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);
+};
+
+int pwrdm_register_platform_funcs(struct pwrdm_ops *custom_funcs);
+int pwrdm_register_pwrdms(struct powerdomain **pwrdm_list);
+int pwrdm_complete_init(void);
+
+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));
+struct voltagedomain *pwrdm_get_voltdm(struct powerdomain *pwrdm);
+
+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);
+int pwrdm_get_context_loss_count(struct powerdomain *pwrdm);
+bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm);
+
+extern void omap242x_powerdomains_init(void);
+extern void omap243x_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