126 lines
4.1 KiB
C
126 lines
4.1 KiB
C
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/*
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* OMAP3/4 Voltage Controller (VC) structure and macro definitions
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*
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* Copyright (C) 2007, 2010 Texas Instruments, Inc.
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* Rajendra Nayak <rnayak@ti.com>
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* Lesly A M <x0080970@ti.com>
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* Thara Gopinath <thara@ti.com>
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*
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* Copyright (C) 2008, 2011 Nokia Corporation
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* Kalle Jokiniemi
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* Paul Walmsley
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*/
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#ifndef __ARCH_ARM_MACH_OMAP2_VC_H
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#define __ARCH_ARM_MACH_OMAP2_VC_H
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#include <linux/kernel.h>
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struct voltagedomain;
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/**
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* struct omap_vc_common - per-VC register/bitfield data
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* @cmd_on_mask: ON bitmask in PRM_VC_CMD_VAL* register
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* @valid: VALID bitmask in PRM_VC_BYPASS_VAL register
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* @bypass_val_reg: Offset of PRM_VC_BYPASS_VAL reg from PRM start
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* @data_shift: DATA field shift in PRM_VC_BYPASS_VAL register
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* @slaveaddr_shift: SLAVEADDR field shift in PRM_VC_BYPASS_VAL register
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* @regaddr_shift: REGADDR field shift in PRM_VC_BYPASS_VAL register
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* @cmd_on_shift: ON field shift in PRM_VC_CMD_VAL_* register
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* @cmd_onlp_shift: ONLP field shift in PRM_VC_CMD_VAL_* register
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* @cmd_ret_shift: RET field shift in PRM_VC_CMD_VAL_* register
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* @cmd_off_shift: OFF field shift in PRM_VC_CMD_VAL_* register
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* @i2c_cfg_reg: I2C configuration register offset
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* @i2c_cfg_hsen_mask: high-speed mode bit field mask in I2C config register
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* @i2c_mcode_mask: MCODE field mask for I2C config register
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*
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* XXX One of cmd_on_mask and cmd_on_shift are not needed
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* XXX VALID should probably be a shift, not a mask
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*/
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struct omap_vc_common {
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u32 cmd_on_mask;
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u32 valid;
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u8 bypass_val_reg;
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u8 data_shift;
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u8 slaveaddr_shift;
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u8 regaddr_shift;
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u8 cmd_on_shift;
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u8 cmd_onlp_shift;
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u8 cmd_ret_shift;
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u8 cmd_off_shift;
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u8 i2c_cfg_reg;
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u8 i2c_cfg_hsen_mask;
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u8 i2c_mcode_mask;
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};
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/* omap_vc_channel.flags values */
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#define OMAP_VC_CHANNEL_DEFAULT BIT(0)
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#define OMAP_VC_CHANNEL_CFG_MUTANT BIT(1)
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/**
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* struct omap_vc_channel - VC per-instance data
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* @i2c_slave_addr: I2C slave address of PMIC for this VC channel
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* @volt_reg_addr: voltage configuration register address
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* @cmd_reg_addr: command configuration register address
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* @setup_time: setup time (in sys_clk cycles) of regulator for this channel
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* @cfg_channel: current value of VC channel configuration register
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* @i2c_high_speed: whether or not to use I2C high-speed mode
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*
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* @common: pointer to VC common data for this platform
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* @smps_sa_mask: i2c slave address bitmask in the PRM_VC_SMPS_SA register
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* @smps_volra_mask: VOLRA* bitmask in the PRM_VC_VOL_RA register
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* @smps_cmdra_mask: CMDRA* bitmask in the PRM_VC_CMD_RA register
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* @cmdval_reg: register for on/ret/off voltage level values for this channel
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* @smps_sa_reg: Offset of PRM_VC_SMPS_SA reg from PRM start
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* @smps_volra_reg: Offset of PRM_VC_SMPS_VOL_RA reg from PRM start
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* @smps_cmdra_reg: Offset of PRM_VC_SMPS_CMD_RA reg from PRM start
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* @cfg_channel_reg: VC channel configuration register
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* @cfg_channel_sa_shift: bit shift for slave address cfg_channel register
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* @flags: VC channel-specific flags (optional)
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*/
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struct omap_vc_channel {
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/* channel state */
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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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u16 setup_time;
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u8 cfg_channel;
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bool i2c_high_speed;
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/* register access data */
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const struct omap_vc_common *common;
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u32 smps_sa_mask;
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u32 smps_volra_mask;
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u32 smps_cmdra_mask;
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u8 cmdval_reg;
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u8 smps_sa_reg;
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u8 smps_volra_reg;
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u8 smps_cmdra_reg;
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u8 cfg_channel_reg;
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u8 cfg_channel_sa_shift;
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u8 flags;
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};
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extern struct omap_vc_channel omap3_vc_mpu;
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extern struct omap_vc_channel omap3_vc_core;
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extern struct omap_vc_channel omap4_vc_mpu;
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extern struct omap_vc_channel omap4_vc_iva;
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extern struct omap_vc_channel omap4_vc_core;
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void omap_vc_init_channel(struct voltagedomain *voltdm);
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int omap_vc_pre_scale(struct voltagedomain *voltdm,
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unsigned long target_volt,
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u8 *target_vsel, u8 *current_vsel);
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void omap_vc_post_scale(struct voltagedomain *voltdm,
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unsigned long target_volt,
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u8 target_vsel, u8 current_vsel);
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int omap_vc_bypass_scale(struct voltagedomain *voltdm,
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unsigned long target_volt);
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#endif
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