vc.h (4525B)
1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * OMAP3/4 Voltage Controller (VC) structure and macro definitions 4 * 5 * Copyright (C) 2007, 2010 Texas Instruments, Inc. 6 * Rajendra Nayak <rnayak@ti.com> 7 * Lesly A M <x0080970@ti.com> 8 * Thara Gopinath <thara@ti.com> 9 * 10 * Copyright (C) 2008, 2011 Nokia Corporation 11 * Kalle Jokiniemi 12 * Paul Walmsley 13 */ 14#ifndef __ARCH_ARM_MACH_OMAP2_VC_H 15#define __ARCH_ARM_MACH_OMAP2_VC_H 16 17#include <linux/kernel.h> 18 19struct voltagedomain; 20 21/** 22 * struct omap_vc_common - per-VC register/bitfield data 23 * @cmd_on_mask: ON bitmask in PRM_VC_CMD_VAL* register 24 * @valid: VALID bitmask in PRM_VC_BYPASS_VAL register 25 * @bypass_val_reg: Offset of PRM_VC_BYPASS_VAL reg from PRM start 26 * @data_shift: DATA field shift in PRM_VC_BYPASS_VAL register 27 * @slaveaddr_shift: SLAVEADDR field shift in PRM_VC_BYPASS_VAL register 28 * @regaddr_shift: REGADDR field shift in PRM_VC_BYPASS_VAL register 29 * @cmd_on_shift: ON field shift in PRM_VC_CMD_VAL_* register 30 * @cmd_onlp_shift: ONLP field shift in PRM_VC_CMD_VAL_* register 31 * @cmd_ret_shift: RET field shift in PRM_VC_CMD_VAL_* register 32 * @cmd_off_shift: OFF field shift in PRM_VC_CMD_VAL_* register 33 * @i2c_cfg_reg: I2C configuration register offset 34 * @i2c_cfg_clear_mask: high-speed mode bit clear mask in I2C config register 35 * @i2c_cfg_hsen_mask: high-speed mode bit field mask in I2C config register 36 * @i2c_mcode_mask: MCODE field mask for I2C config register 37 * 38 * XXX One of cmd_on_mask and cmd_on_shift are not needed 39 * XXX VALID should probably be a shift, not a mask 40 */ 41struct omap_vc_common { 42 u32 cmd_on_mask; 43 u32 valid; 44 u8 bypass_val_reg; 45 u8 data_shift; 46 u8 slaveaddr_shift; 47 u8 regaddr_shift; 48 u8 cmd_on_shift; 49 u8 cmd_onlp_shift; 50 u8 cmd_ret_shift; 51 u8 cmd_off_shift; 52 u8 i2c_cfg_reg; 53 u8 i2c_cfg_clear_mask; 54 u8 i2c_cfg_hsen_mask; 55 u8 i2c_mcode_mask; 56}; 57 58/* omap_vc_channel.flags values */ 59#define OMAP_VC_CHANNEL_DEFAULT BIT(0) 60#define OMAP_VC_CHANNEL_CFG_MUTANT BIT(1) 61 62/** 63 * struct omap_vc_channel - VC per-instance data 64 * @i2c_slave_addr: I2C slave address of PMIC for this VC channel 65 * @volt_reg_addr: voltage configuration register address 66 * @cmd_reg_addr: command configuration register address 67 * @setup_time: setup time (in sys_clk cycles) of regulator for this channel 68 * @cfg_channel: current value of VC channel configuration register 69 * @i2c_high_speed: whether or not to use I2C high-speed mode 70 * 71 * @common: pointer to VC common data for this platform 72 * @smps_sa_mask: i2c slave address bitmask in the PRM_VC_SMPS_SA register 73 * @smps_volra_mask: VOLRA* bitmask in the PRM_VC_VOL_RA register 74 * @smps_cmdra_mask: CMDRA* bitmask in the PRM_VC_CMD_RA register 75 * @cmdval_reg: register for on/ret/off voltage level values for this channel 76 * @smps_sa_reg: Offset of PRM_VC_SMPS_SA reg from PRM start 77 * @smps_volra_reg: Offset of PRM_VC_SMPS_VOL_RA reg from PRM start 78 * @smps_cmdra_reg: Offset of PRM_VC_SMPS_CMD_RA reg from PRM start 79 * @cfg_channel_reg: VC channel configuration register 80 * @cfg_channel_sa_shift: bit shift for slave address cfg_channel register 81 * @flags: VC channel-specific flags (optional) 82 */ 83struct omap_vc_channel { 84 /* channel state */ 85 u16 i2c_slave_addr; 86 u16 volt_reg_addr; 87 u16 cmd_reg_addr; 88 u8 cfg_channel; 89 bool i2c_high_speed; 90 91 /* register access data */ 92 const struct omap_vc_common *common; 93 u32 smps_sa_mask; 94 u32 smps_volra_mask; 95 u32 smps_cmdra_mask; 96 u8 cmdval_reg; 97 u8 smps_sa_reg; 98 u8 smps_volra_reg; 99 u8 smps_cmdra_reg; 100 u8 cfg_channel_reg; 101 u8 cfg_channel_sa_shift; 102 u8 flags; 103}; 104 105extern struct omap_vc_channel omap3_vc_mpu; 106extern struct omap_vc_channel omap3_vc_core; 107 108extern struct omap_vc_channel omap4_vc_mpu; 109extern struct omap_vc_channel omap4_vc_iva; 110extern struct omap_vc_channel omap4_vc_core; 111 112extern struct omap_vc_param omap3_mpu_vc_data; 113extern struct omap_vc_param omap3_core_vc_data; 114 115extern struct omap_vc_param omap4_mpu_vc_data; 116extern struct omap_vc_param omap4_iva_vc_data; 117extern struct omap_vc_param omap4_core_vc_data; 118 119void omap3_vc_set_pmic_signaling(int core_next_state); 120void omap4_vc_set_pmic_signaling(int core_next_state); 121 122void omap_vc_init_channel(struct voltagedomain *voltdm); 123int omap_vc_pre_scale(struct voltagedomain *voltdm, 124 unsigned long target_volt, 125 u8 *target_vsel, u8 *current_vsel); 126void omap_vc_post_scale(struct voltagedomain *voltdm, 127 unsigned long target_volt, 128 u8 target_vsel, u8 current_vsel); 129int omap_vc_bypass_scale(struct voltagedomain *voltdm, 130 unsigned long target_volt); 131 132#endif 133