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