a5ebba6b54
These are various power management related changes, mainly concerning cpuidle on i.MX and OMAP, as well as a the move of the omap smartreflex driver to live in the power subsystem. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIVAwUAUA2dhWCrR//JCVInAQLuqRAA1FxxzAMTESs3/rpjnQmZUUKef4SuJwY2 GBenXFLY5PlxgcrwTbKwepapu8IWfmw171+tRrrMWvQgtBwa+SefwFCaLcRkvRrs kNAHIVI+Gqm4/m6d+WC+ymJLOZdkcTHES+40eycxcjiIElGEMtiW5/qwh060GAgC YxtjoN9BKegjsDLPZdZghO855YUV8CKEg+q5kIYW0Q3Ci0POGvOhgvbI61K5w8z7 fTdbFRDRBqy0BEx9noKTu8XIB/inwlyUY7N3bAv494TsU48kxMIb95FdSGiY/0yV 1883wCacBYBNemWRvWBHNilSsDcuDmM3yNvdwi3JvQnzFBPc8uyze9wbPFOW4aQd Vhf+g8hjuHkw1xreWpO+nREysOjiiSzRUci2nT6aAQTcpWCacVTJ5sW7KOQ63nrH OQpe/fvm/qT8FKPDh/lcrqIUKrHfeFjZx7XlYjw7j0ZL+99mIpwuOql18mQee9G5 OV6c0rfgeTnGLdc1kOlLPElkXe7SQ/GJK1JI1mA5BNYJlVKx+o0qVlcnRzY6bWaP dmSIA+9Bs/fglvmAQHT3u68zn5KfoTbnJWb0v5PQJfitEBdlugKG8nF9mVRIX70X EygOta8vApF9N20WhE2TLLaDhlrOmd4bOtRVdoO8pDVN/hsWIylnEu952ZBSZg3U 9wF0Ydy2LP4= =tgT5 -----END PGP SIGNATURE----- Merge tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull arm-soc power management changes from Arnd Bergmann: "These are various power management related changes, mainly concerning cpuidle on i.MX and OMAP, as well as a the move of the omap smartreflex driver to live in the power subsystem." Fix up conflicts in arch/arm/mach-{imx/mach-imx6q.c,omap2/prm2xxx_3xxx.h} * tag 'pm' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits) ARM: OMAP2+: PM: fix IRQ_NOAUTOEN removal by mis-merge ARM: OMAP2+: do not allow SmartReflex to be built as a module ARM: OMAP2: Use hwmod to initialize mmc for 2420 ARM: OMAP3: PM: cpuidle: optimize the clkdm idle latency in C1 state ARM: OMAP3: PM: cpuidle: optimize the PER latency in C1 state ARM: OMAP3: PM: cpuidle: default to C1 in next_valid_state ARM: OMAP3: PM: cleanup cam_pwrdm leftovers ARM: OMAP3: PM: call pre/post transition per powerdomain ARM: OMAP2+: powerdomain: allow pre/post transtion to be per pwrdm ARM: OMAP3: PM: Remove IO Daisychain control from cpuidle ARM: OMAP3PLUS: hwmod: reconfigure IO Daisychain during hwmod mux ARM: OMAP3+: PRM: Enable IO wake up ARM: OMAP4: PRM: Add IO Daisychain support ARM: OMAP3: PM: Move IO Daisychain function to omap3 prm file ARM: OMAP3: PM: correct enable/disable of daisy io chain ARM: OMAP2+: PRM: fix compile for OMAP4-only build W1: OMAP HDQ1W: use runtime PM ARM: OMAP2+: HDQ1W: use omap_device W1: OMAP HDQ1W: use 32-bit register accesses W1: OMAP HDQ1W: allow driver to be built on all OMAP2+ ...
157 lines
4.8 KiB
C
157 lines
4.8 KiB
C
/*
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* OMAP Voltage Management Routines
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*
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* Author: Thara Gopinath <thara@ti.com>
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*
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* Copyright (C) 2009 Texas Instruments, Inc.
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* Thara Gopinath <thara@ti.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ARCH_ARM_MACH_OMAP2_VOLTAGE_H
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#define __ARCH_ARM_MACH_OMAP2_VOLTAGE_H
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#include <linux/err.h>
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#include <plat/voltage.h>
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#include "vc.h"
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#include "vp.h"
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struct powerdomain;
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/* XXX document */
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#define VOLTSCALE_VPFORCEUPDATE 1
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#define VOLTSCALE_VCBYPASS 2
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/*
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* OMAP3 GENERIC setup times. Revisit to see if these needs to be
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* passed from board or PMIC file
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*/
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#define OMAP3_CLKSETUP 0xff
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#define OMAP3_VOLTOFFSET 0xff
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#define OMAP3_VOLTSETUP2 0xff
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/**
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* struct omap_vfsm_instance - per-voltage manager FSM register/bitfield
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* data
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* @voltsetup_mask: SETUP_TIME* bitmask in the PRM_VOLTSETUP* register
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* @voltsetup_reg: register offset of PRM_VOLTSETUP from PRM base
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*
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* XXX What about VOLTOFFSET/VOLTCTRL?
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*/
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struct omap_vfsm_instance {
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u32 voltsetup_mask;
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u8 voltsetup_reg;
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};
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/**
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* struct voltagedomain - omap voltage domain global structure.
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* @name: Name of the voltage domain which can be used as a unique identifier.
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* @scalable: Whether or not this voltage domain is scalable
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* @node: list_head linking all voltage domains
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* @pwrdm_list: list_head linking all powerdomains in this voltagedomain
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* @vc: pointer to VC channel associated with this voltagedomain
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* @vp: pointer to VP associated with this voltagedomain
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* @read: read a VC/VP register
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* @write: write a VC/VP register
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* @read: read-modify-write a VC/VP register
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* @sys_clk: system clock name/frequency, used for various timing calculations
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* @scale: function used to scale the voltage of the voltagedomain
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* @nominal_volt: current nominal voltage for this voltage domain
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* @volt_data: voltage table having the distinct voltages supported
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* by the domain and other associated per voltage data.
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*/
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struct voltagedomain {
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char *name;
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bool scalable;
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struct list_head node;
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struct list_head pwrdm_list;
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struct omap_vc_channel *vc;
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const struct omap_vfsm_instance *vfsm;
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struct omap_vp_instance *vp;
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struct omap_voltdm_pmic *pmic;
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/* VC/VP register access functions: SoC specific */
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u32 (*read) (u8 offset);
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void (*write) (u32 val, u8 offset);
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u32 (*rmw)(u32 mask, u32 bits, u8 offset);
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union {
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const char *name;
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u32 rate;
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} sys_clk;
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int (*scale) (struct voltagedomain *voltdm,
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unsigned long target_volt);
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u32 nominal_volt;
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struct omap_volt_data *volt_data;
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};
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/**
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* struct omap_voltdm_pmic - PMIC specific data required by voltage driver.
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* @slew_rate: PMIC slew rate (in uv/us)
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* @step_size: PMIC voltage step size (in uv)
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* @i2c_slave_addr: I2C slave address of PMIC
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* @volt_reg_addr: voltage configuration register address
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* @cmd_reg_addr: command (on, on-LP, ret, off) configuration register address
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* @i2c_high_speed: whether VC uses I2C high-speed mode to PMIC
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* @i2c_mcode: master code value for I2C high-speed preamble transmission
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* @vsel_to_uv: PMIC API to convert vsel value to actual voltage in uV.
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* @uv_to_vsel: PMIC API to convert voltage in uV to vsel value.
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*/
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struct omap_voltdm_pmic {
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int slew_rate;
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int step_size;
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u32 on_volt;
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u32 onlp_volt;
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u32 ret_volt;
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u32 off_volt;
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u16 volt_setup_time;
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u16 i2c_slave_addr;
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u16 volt_reg_addr;
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u16 cmd_reg_addr;
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u8 vp_erroroffset;
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u8 vp_vstepmin;
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u8 vp_vstepmax;
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u8 vp_vddmin;
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u8 vp_vddmax;
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u8 vp_timeout_us;
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bool i2c_high_speed;
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u8 i2c_mcode;
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unsigned long (*vsel_to_uv) (const u8 vsel);
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u8 (*uv_to_vsel) (unsigned long uV);
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};
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void omap_voltage_get_volttable(struct voltagedomain *voltdm,
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struct omap_volt_data **volt_data);
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struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm,
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unsigned long volt);
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int omap_voltage_register_pmic(struct voltagedomain *voltdm,
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struct omap_voltdm_pmic *pmic);
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void omap_change_voltscale_method(struct voltagedomain *voltdm,
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int voltscale_method);
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int omap_voltage_late_init(void);
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extern void omap2xxx_voltagedomains_init(void);
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extern void omap3xxx_voltagedomains_init(void);
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extern void am33xx_voltagedomains_init(void);
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extern void omap44xx_voltagedomains_init(void);
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struct voltagedomain *voltdm_lookup(const char *name);
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void voltdm_init(struct voltagedomain **voltdm_list);
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int voltdm_add_pwrdm(struct voltagedomain *voltdm, struct powerdomain *pwrdm);
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int voltdm_for_each(int (*fn)(struct voltagedomain *voltdm, void *user),
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void *user);
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int voltdm_for_each_pwrdm(struct voltagedomain *voltdm,
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int (*fn)(struct voltagedomain *voltdm,
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struct powerdomain *pwrdm));
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int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt);
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void voltdm_reset(struct voltagedomain *voltdm);
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unsigned long voltdm_get_voltage(struct voltagedomain *voltdm);
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#endif
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