summary refs log tree commit diff
path: root/arch/arm/mach-omap2/powerdomain.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 19:13:58 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 19:13:58 -0800
commit01539ba2a706ab7d35fc0667dff919ade7f87d63 (patch)
tree5a4bd0cf78007d06690fe4ac06bbd49a5a70bc47 /arch/arm/mach-omap2/powerdomain.h
parent9e9bc9736756f25d6c47b4eba0ebf25b20a6f153 (diff)
parentdc69d1af9e8d9cbbabff88bb35a6782187a22229 (diff)
downloadlinux-01539ba2a706ab7d35fc0667dff919ade7f87d63.tar.gz
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: (243 commits)
  omap2: Make OMAP2PLUS select OMAP_DM_TIMER
  OMAP4: hwmod data: Fix alignment and end of line in structurefields
  OMAP4: hwmod data: Move the DMA structures
  OMAP4: hwmod data: Move the smartreflex structures
  OMAP4: hwmod data: Fix missing SIDLE_SMART_WKUP in smartreflexsysc
  arm: omap: tusb6010: add name for MUSB IRQ
  arm: omap: craneboard: Add USB EHCI support
  omap2+: Initialize serial port for dynamic remuxing for n8x0
  omap2+: Add struct omap_board_data and use it for platform level serial init
  omap2+: Allow hwmod state changes to mux pads based on the state changes
  omap2+: Add support for hwmod specific muxing of devices
  omap2+: Add omap_mux_get_by_name
  OMAP2: PM: fix compile error when !CONFIG_SUSPEND
  MAINTAINERS: OMAP: hwmod: update hwmod code, data maintainership
  OMAP4: Smartreflex framework extensions
  OMAP4: hwmod: Add inital data for smartreflex modules.
  OMAP4: PM: Program correct init voltages for scalable VDDs
  OMAP4: Adding voltage driver support
  OMAP4: Register voltage PMIC parameters with the voltage layer
  OMAP3: PM: Program correct init voltages for VDD1 and VDD2
  ...

Fix up trivial conflict in arch/arm/plat-omap/Kconfig
Diffstat (limited to 'arch/arm/mach-omap2/powerdomain.h')
-rw-r--r--arch/arm/mach-omap2/powerdomain.h233
1 files changed, 233 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h
new file mode 100644
index 000000000000..c66431edfeb7
--- /dev/null
+++ b/arch/arm/mach-omap2/powerdomain.h
@@ -0,0 +1,233 @@
+/*
+ * OMAP2/3/4 powerdomain control
+ *
+ * Copyright (C) 2007-2008, 2010 Texas Instruments, Inc.
+ * Copyright (C) 2007-2010 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_OFF		(1 << PWRDM_POWER_OFF)
+#define PWRSTS_OFF_ON		((1 << PWRDM_POWER_OFF) | \
+				 (1 << PWRDM_POWER_ON))
+
+#define PWRSTS_OFF_RET		((1 << PWRDM_POWER_OFF) | \
+				 (1 << PWRDM_POWER_RET))
+
+#define PWRSTS_RET_ON		((1 << PWRDM_POWER_RET) | \
+				 (1 << PWRDM_POWER_ON))
+
+#define PWRSTS_OFF_RET_ON	(PWRSTS_OFF_RET | (1 << PWRDM_POWER_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 specfic 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_fw_init(void);
+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);
+
+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