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@@ -23,3 +23,174 @@
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#include <linux/atomic.h>
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#include "voltage.h"
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+
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+/* Powerdomain basic power states */
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+#define PWRDM_POWER_OFF 0x0
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+#define PWRDM_POWER_RET 0x1
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+#define PWRDM_POWER_INACTIVE 0x2
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+#define PWRDM_POWER_ON 0x3
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+
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+#define PWRDM_MAX_PWRSTS 4
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+
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+/* Powerdomain allowable state bitfields */
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+#define PWRSTS_ON (1 << PWRDM_POWER_ON)
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+#define PWRSTS_INACTIVE (1 << PWRDM_POWER_INACTIVE)
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+#define PWRSTS_RET (1 << PWRDM_POWER_RET)
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+#define PWRSTS_OFF (1 << PWRDM_POWER_OFF)
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+
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+#define PWRSTS_OFF_ON (PWRSTS_OFF | PWRSTS_ON)
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+#define PWRSTS_OFF_RET (PWRSTS_OFF | PWRSTS_RET)
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+#define PWRSTS_RET_ON (PWRSTS_RET | PWRSTS_ON)
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+#define PWRSTS_OFF_RET_ON (PWRSTS_OFF_RET | PWRSTS_ON)
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+
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+
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+/* Powerdomain flags */
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+#define PWRDM_HAS_HDWR_SAR (1 << 0) /* hardware save-and-restore support */
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+#define PWRDM_HAS_MPU_QUIRK (1 << 1) /* MPU pwr domain has MEM bank 0 bits
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+ * in MEM bank 1 position. This is
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+ * true for OMAP3430
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+ */
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+#define PWRDM_HAS_LOWPOWERSTATECHANGE (1 << 2) /*
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+ * support to transition from a
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+ * sleep state to a lower sleep
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+ * state without waking up the
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+ * powerdomain
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+ */
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+
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+/*
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+ * Number of memory banks that are power-controllable. On OMAP4430, the
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+ * maximum is 5.
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+ */
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+#define PWRDM_MAX_MEM_BANKS 5
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+
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+/*
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+ * Maximum number of clockdomains that can be associated with a powerdomain.
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+ * PER powerdomain on AM33XX is the worst case
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+ */
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+#define PWRDM_MAX_CLKDMS 11
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+
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+/* XXX A completely arbitrary number. What is reasonable here? */
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+#define PWRDM_TRANSITION_BAILOUT 100000
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+
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+struct clockdomain;
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+struct powerdomain;
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+
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+/**
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+ * struct powerdomain - OMAP powerdomain
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+ * @name: Powerdomain name
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+ * @voltdm: voltagedomain containing this powerdomain
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+ * @prcm_offs: the address offset from CM_BASE/PRM_BASE
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+ * @prcm_partition: (OMAP4 only) the PRCM partition ID containing @prcm_offs
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+ * @pwrsts: Possible powerdomain power states
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+ * @pwrsts_logic_ret: Possible logic power states when pwrdm in RETENTION
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+ * @flags: Powerdomain flags
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+ * @banks: Number of software-controllable memory banks in this powerdomain
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+ * @pwrsts_mem_ret: Possible memory bank pwrstates when pwrdm in RETENTION
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+ * @pwrsts_mem_on: Possible memory bank pwrstates when pwrdm in ON
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+ * @pwrdm_clkdms: Clockdomains in this powerdomain
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+ * @node: list_head linking all powerdomains
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+ * @voltdm_node: list_head linking all powerdomains in a voltagedomain
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+ * @pwrstctrl_offs: (AM33XX only) XXX_PWRSTCTRL reg offset from prcm_offs
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+ * @pwrstst_offs: (AM33XX only) XXX_PWRSTST reg offset from prcm_offs
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+ * @logicretstate_mask: (AM33XX only) mask for logic retention bitfield
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+ * in @pwrstctrl_offs
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+ * @mem_on_mask: (AM33XX only) mask for mem on bitfield in @pwrstctrl_offs
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+ * @mem_ret_mask: (AM33XX only) mask for mem ret bitfield in @pwrstctrl_offs
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+ * @mem_pwrst_mask: (AM33XX only) mask for mem state bitfield in @pwrstst_offs
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+ * @mem_retst_mask: (AM33XX only) mask for mem retention state bitfield
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+ * in @pwrstctrl_offs
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+ * @state:
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+ * @state_counter:
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+ * @timer:
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+ * @state_timer:
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+ *
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+ * @prcm_partition possible values are defined in mach-omap2/prcm44xx.h.
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+ */
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+struct powerdomain {
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+ const char *name;
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+ union {
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+ const char *name;
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+ struct voltagedomain *ptr;
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+ } voltdm;
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+ const s16 prcm_offs;
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+ const u8 pwrsts;
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+ const u8 pwrsts_logic_ret;
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+ const u8 flags;
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+ const u8 banks;
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+ const u8 pwrsts_mem_ret[PWRDM_MAX_MEM_BANKS];
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+ const u8 pwrsts_mem_on[PWRDM_MAX_MEM_BANKS];
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+ const u8 prcm_partition;
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+ struct clockdomain *pwrdm_clkdms[PWRDM_MAX_CLKDMS];
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+ struct list_head node;
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+ struct list_head voltdm_node;
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+ int state;
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+ unsigned state_counter[PWRDM_MAX_PWRSTS];
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+ unsigned ret_logic_off_counter;
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+ unsigned ret_mem_off_counter[PWRDM_MAX_MEM_BANKS];
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+
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+ const u8 pwrstctrl_offs;
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+ const u8 pwrstst_offs;
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+ const u32 logicretstate_mask;
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+ const u32 mem_on_mask[PWRDM_MAX_MEM_BANKS];
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+ const u32 mem_ret_mask[PWRDM_MAX_MEM_BANKS];
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+ const u32 mem_pwrst_mask[PWRDM_MAX_MEM_BANKS];
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+ const u32 mem_retst_mask[PWRDM_MAX_MEM_BANKS];
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+
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+#ifdef CONFIG_PM_DEBUG
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+ s64 timer;
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+ s64 state_timer[PWRDM_MAX_PWRSTS];
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+#endif
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+};
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+
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+/**
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+ * struct pwrdm_ops - Arch specific function implementations
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+ * @pwrdm_set_next_pwrst: Set the target power state for a pd
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+ * @pwrdm_read_next_pwrst: Read the target power state set for a pd
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+ * @pwrdm_read_pwrst: Read the current power state of a pd
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+ * @pwrdm_read_prev_pwrst: Read the prev power state entered by the pd
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+ * @pwrdm_set_logic_retst: Set the logic state in RET for a pd
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+ * @pwrdm_set_mem_onst: Set the Memory state in ON for a pd
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+ * @pwrdm_set_mem_retst: Set the Memory state in RET for a pd
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+ * @pwrdm_read_logic_pwrst: Read the current logic state of a pd
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+ * @pwrdm_read_prev_logic_pwrst: Read the previous logic state entered by a pd
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+ * @pwrdm_read_logic_retst: Read the logic state in RET for a pd
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+ * @pwrdm_read_mem_pwrst: Read the current memory state of a pd
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+ * @pwrdm_read_prev_mem_pwrst: Read the previous memory state entered by a pd
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+ * @pwrdm_read_mem_retst: Read the memory state in RET for a pd
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+ * @pwrdm_clear_all_prev_pwrst: Clear all previous power states logged for a pd
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+ * @pwrdm_enable_hdwr_sar: Enable Hardware Save-Restore feature for the pd
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+ * @pwrdm_disable_hdwr_sar: Disable Hardware Save-Restore feature for a pd
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+ * @pwrdm_set_lowpwrstchange: Enable pd transitions from a shallow to deep sleep
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+ * @pwrdm_wait_transition: Wait for a pd state transition to complete
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+ */
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+struct pwrdm_ops {
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+ int (*pwrdm_set_next_pwrst)(struct powerdomain *pwrdm, u8 pwrst);
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+ int (*pwrdm_read_next_pwrst)(struct powerdomain *pwrdm);
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+ int (*pwrdm_read_pwrst)(struct powerdomain *pwrdm);
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+ int (*pwrdm_read_prev_pwrst)(struct powerdomain *pwrdm);
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+ int (*pwrdm_set_logic_retst)(struct powerdomain *pwrdm, u8 pwrst);
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+ int (*pwrdm_set_mem_onst)(struct powerdomain *pwrdm, u8 bank, u8 pwrst);
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+ int (*pwrdm_set_mem_retst)(struct powerdomain *pwrdm, u8 bank, u8 pwrst);
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+ int (*pwrdm_read_logic_pwrst)(struct powerdomain *pwrdm);
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+ int (*pwrdm_read_prev_logic_pwrst)(struct powerdomain *pwrdm);
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+ int (*pwrdm_read_logic_retst)(struct powerdomain *pwrdm);
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+ int (*pwrdm_read_mem_pwrst)(struct powerdomain *pwrdm, u8 bank);
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+ int (*pwrdm_read_prev_mem_pwrst)(struct powerdomain *pwrdm, u8 bank);
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+ int (*pwrdm_read_mem_retst)(struct powerdomain *pwrdm, u8 bank);
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+ int (*pwrdm_clear_all_prev_pwrst)(struct powerdomain *pwrdm);
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+ int (*pwrdm_enable_hdwr_sar)(struct powerdomain *pwrdm);
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+ int (*pwrdm_disable_hdwr_sar)(struct powerdomain *pwrdm);
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+ int (*pwrdm_set_lowpwrstchange)(struct powerdomain *pwrdm);
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+ int (*pwrdm_wait_transition)(struct powerdomain *pwrdm);
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+};
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+
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+int pwrdm_register_platform_funcs(struct pwrdm_ops *custom_funcs);
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+int pwrdm_register_pwrdms(struct powerdomain **pwrdm_list);
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+int pwrdm_complete_init(void);
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+
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+struct powerdomain *pwrdm_lookup(const char *name);
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+
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+int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm, void *user),
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+ void *user);
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+int pwrdm_for_each_nolock(int (*fn)(struct powerdomain *pwrdm, void *user),
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+ void *user);
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