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