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_clear_mask: high-speed mode bit clear mask in I2C config register 38 * @i2c_cfg_hsen_mask: high-speed mode bit field mask in I2C config register 39 * @i2c_mcode_mask: MCODE field mask for I2C config register 40 * 41 * XXX One of cmd_on_mask and cmd_on_shift are not needed 42 * XXX VALID should probably be a shift, not a mask 43 */ 44 struct omap_vc_common { 45 u32 cmd_on_mask; 46 u32 valid; 47 u8 bypass_val_reg; 48 u8 data_shift; 49 u8 slaveaddr_shift; 50 u8 regaddr_shift; 51 u8 cmd_on_shift; 52 u8 cmd_onlp_shift; 53 u8 cmd_ret_shift; 54 u8 cmd_off_shift; 55 u8 i2c_cfg_reg; 56 u8 i2c_cfg_clear_mask; 57 u8 i2c_cfg_hsen_mask; 58 u8 i2c_mcode_mask; 59 }; 60 61 /* omap_vc_channel.flags values */ 62 #define OMAP_VC_CHANNEL_DEFAULT BIT(0) 63 #define OMAP_VC_CHANNEL_CFG_MUTANT BIT(1) 64 65 /** 66 * struct omap_vc_channel - VC per-instance data 67 * @i2c_slave_addr: I2C slave address of PMIC for this VC channel 68 * @volt_reg_addr: voltage configuration register address 69 * @cmd_reg_addr: command configuration register address 70 * @setup_time: setup time (in sys_clk cycles) of regulator for this channel 71 * @cfg_channel: current value of VC channel configuration register 72 * @i2c_high_speed: whether or not to use I2C high-speed mode 73 * 74 * @common: pointer to VC common data for this platform 75 * @smps_sa_mask: i2c slave address bitmask in the PRM_VC_SMPS_SA register 76 * @smps_volra_mask: VOLRA* bitmask in the PRM_VC_VOL_RA register 77 * @smps_cmdra_mask: CMDRA* bitmask in the PRM_VC_CMD_RA register 78 * @cmdval_reg: register for on/ret/off voltage level values for this channel 79 * @smps_sa_reg: Offset of PRM_VC_SMPS_SA reg from PRM start 80 * @smps_volra_reg: Offset of PRM_VC_SMPS_VOL_RA reg from PRM start 81 * @smps_cmdra_reg: Offset of PRM_VC_SMPS_CMD_RA reg from PRM start 82 * @cfg_channel_reg: VC channel configuration register 83 * @cfg_channel_sa_shift: bit shift for slave address cfg_channel register 84 * @flags: VC channel-specific flags (optional) 85 */ 86 struct omap_vc_channel { 87 /* channel state */ 88 u16 i2c_slave_addr; 89 u16 volt_reg_addr; 90 u16 cmd_reg_addr; 91 u8 cfg_channel; 92 bool i2c_high_speed; 93 94 /* register access data */ 95 const struct omap_vc_common *common; 96 u32 smps_sa_mask; 97 u32 smps_volra_mask; 98 u32 smps_cmdra_mask; 99 u8 cmdval_reg; 100 u8 smps_sa_reg; 101 u8 smps_volra_reg; 102 u8 smps_cmdra_reg; 103 u8 cfg_channel_reg; 104 u8 cfg_channel_sa_shift; 105 u8 flags; 106 }; 107 108 extern struct omap_vc_channel omap3_vc_mpu; 109 extern struct omap_vc_channel omap3_vc_core; 110 111 extern struct omap_vc_channel omap4_vc_mpu; 112 extern struct omap_vc_channel omap4_vc_iva; 113 extern struct omap_vc_channel omap4_vc_core; 114 115 extern struct omap_vc_param omap3_mpu_vc_data; 116 extern struct omap_vc_param omap3_core_vc_data; 117 118 extern struct omap_vc_param omap4_mpu_vc_data; 119 extern struct omap_vc_param omap4_iva_vc_data; 120 extern struct omap_vc_param omap4_core_vc_data; 121 122 void omap3_vc_set_pmic_signaling(int core_next_state); 123 124 125 void omap_vc_init_channel(struct voltagedomain *voltdm); 126 int omap_vc_pre_scale(struct voltagedomain *voltdm, 127 unsigned long target_volt, 128 u8 *target_vsel, u8 *current_vsel); 129 void omap_vc_post_scale(struct voltagedomain *voltdm, 130 unsigned long target_volt, 131 u8 target_vsel, u8 current_vsel); 132 int omap_vc_bypass_scale(struct voltagedomain *voltdm, 133 unsigned long target_volt); 134 135 #endif 136 137