1 /* 2 * OMAP Smartreflex Defines and Routines 3 * 4 * Author: Thara Gopinath <thara@ti.com> 5 * 6 * Copyright (C) 2010 Texas Instruments, Inc. 7 * Thara Gopinath <thara@ti.com> 8 * 9 * Copyright (C) 2008 Nokia Corporation 10 * Kalle Jokiniemi 11 * 12 * Copyright (C) 2007 Texas Instruments, Inc. 13 * Lesly A M <x0080970@ti.com> 14 * 15 * This program is free software; you can redistribute it and/or modify 16 * it under the terms of the GNU General Public License version 2 as 17 * published by the Free Software Foundation. 18 */ 19 20 #ifndef __ASM_ARM_OMAP_SMARTREFLEX_H 21 #define __ASM_ARM_OMAP_SMARTREFLEX_H 22 23 #include <linux/platform_device.h> 24 25 #include "voltage.h" 26 27 /* 28 * Different Smartreflex IPs version. The v1 is the 65nm version used in 29 * OMAP3430. The v2 is the update for the 45nm version of the IP 30 * used in OMAP3630 and OMAP4430 31 */ 32 #define SR_TYPE_V1 1 33 #define SR_TYPE_V2 2 34 35 /* SMART REFLEX REG ADDRESS OFFSET */ 36 #define SRCONFIG 0x00 37 #define SRSTATUS 0x04 38 #define SENVAL 0x08 39 #define SENMIN 0x0C 40 #define SENMAX 0x10 41 #define SENAVG 0x14 42 #define AVGWEIGHT 0x18 43 #define NVALUERECIPROCAL 0x1c 44 #define SENERROR_V1 0x20 45 #define ERRCONFIG_V1 0x24 46 #define IRQ_EOI 0x20 47 #define IRQSTATUS_RAW 0x24 48 #define IRQSTATUS 0x28 49 #define IRQENABLE_SET 0x2C 50 #define IRQENABLE_CLR 0x30 51 #define SENERROR_V2 0x34 52 #define ERRCONFIG_V2 0x38 53 54 /* Bit/Shift Positions */ 55 56 /* SRCONFIG */ 57 #define SRCONFIG_ACCUMDATA_SHIFT 22 58 #define SRCONFIG_SRCLKLENGTH_SHIFT 12 59 #define SRCONFIG_SENNENABLE_V1_SHIFT 5 60 #define SRCONFIG_SENPENABLE_V1_SHIFT 3 61 #define SRCONFIG_SENNENABLE_V2_SHIFT 1 62 #define SRCONFIG_SENPENABLE_V2_SHIFT 0 63 #define SRCONFIG_CLKCTRL_SHIFT 0 64 65 #define SRCONFIG_ACCUMDATA_MASK (0x3ff << 22) 66 67 #define SRCONFIG_SRENABLE BIT(11) 68 #define SRCONFIG_SENENABLE BIT(10) 69 #define SRCONFIG_ERRGEN_EN BIT(9) 70 #define SRCONFIG_MINMAXAVG_EN BIT(8) 71 #define SRCONFIG_DELAYCTRL BIT(2) 72 73 /* AVGWEIGHT */ 74 #define AVGWEIGHT_SENPAVGWEIGHT_SHIFT 2 75 #define AVGWEIGHT_SENNAVGWEIGHT_SHIFT 0 76 77 /* NVALUERECIPROCAL */ 78 #define NVALUERECIPROCAL_SENPGAIN_SHIFT 20 79 #define NVALUERECIPROCAL_SENNGAIN_SHIFT 16 80 #define NVALUERECIPROCAL_RNSENP_SHIFT 8 81 #define NVALUERECIPROCAL_RNSENN_SHIFT 0 82 83 /* ERRCONFIG */ 84 #define ERRCONFIG_ERRWEIGHT_SHIFT 16 85 #define ERRCONFIG_ERRMAXLIMIT_SHIFT 8 86 #define ERRCONFIG_ERRMINLIMIT_SHIFT 0 87 88 #define SR_ERRWEIGHT_MASK (0x07 << 16) 89 #define SR_ERRMAXLIMIT_MASK (0xff << 8) 90 #define SR_ERRMINLIMIT_MASK (0xff << 0) 91 92 #define ERRCONFIG_VPBOUNDINTEN_V1 BIT(31) 93 #define ERRCONFIG_VPBOUNDINTST_V1 BIT(30) 94 #define ERRCONFIG_MCUACCUMINTEN BIT(29) 95 #define ERRCONFIG_MCUACCUMINTST BIT(28) 96 #define ERRCONFIG_MCUVALIDINTEN BIT(27) 97 #define ERRCONFIG_MCUVALIDINTST BIT(26) 98 #define ERRCONFIG_MCUBOUNDINTEN BIT(25) 99 #define ERRCONFIG_MCUBOUNDINTST BIT(24) 100 #define ERRCONFIG_MCUDISACKINTEN BIT(23) 101 #define ERRCONFIG_VPBOUNDINTST_V2 BIT(23) 102 #define ERRCONFIG_MCUDISACKINTST BIT(22) 103 #define ERRCONFIG_VPBOUNDINTEN_V2 BIT(22) 104 105 #define ERRCONFIG_STATUS_V1_MASK (ERRCONFIG_VPBOUNDINTST_V1 | \ 106 ERRCONFIG_MCUACCUMINTST | \ 107 ERRCONFIG_MCUVALIDINTST | \ 108 ERRCONFIG_MCUBOUNDINTST | \ 109 ERRCONFIG_MCUDISACKINTST) 110 /* IRQSTATUS */ 111 #define IRQSTATUS_MCUACCUMINT BIT(3) 112 #define IRQSTATUS_MCVALIDINT BIT(2) 113 #define IRQSTATUS_MCBOUNDSINT BIT(1) 114 #define IRQSTATUS_MCUDISABLEACKINT BIT(0) 115 116 /* IRQENABLE_SET and IRQENABLE_CLEAR */ 117 #define IRQENABLE_MCUACCUMINT BIT(3) 118 #define IRQENABLE_MCUVALIDINT BIT(2) 119 #define IRQENABLE_MCUBOUNDSINT BIT(1) 120 #define IRQENABLE_MCUDISABLEACKINT BIT(0) 121 122 /* Common Bit values */ 123 124 #define SRCLKLENGTH_12MHZ_SYSCLK 0x3c 125 #define SRCLKLENGTH_13MHZ_SYSCLK 0x41 126 #define SRCLKLENGTH_19MHZ_SYSCLK 0x60 127 #define SRCLKLENGTH_26MHZ_SYSCLK 0x82 128 #define SRCLKLENGTH_38MHZ_SYSCLK 0xC0 129 130 /* 131 * 3430 specific values. Maybe these should be passed from board file or 132 * pmic structures. 133 */ 134 #define OMAP3430_SR_ACCUMDATA 0x1f4 135 136 #define OMAP3430_SR1_SENPAVGWEIGHT 0x03 137 #define OMAP3430_SR1_SENNAVGWEIGHT 0x03 138 139 #define OMAP3430_SR2_SENPAVGWEIGHT 0x01 140 #define OMAP3430_SR2_SENNAVGWEIGHT 0x01 141 142 #define OMAP3430_SR_ERRWEIGHT 0x04 143 #define OMAP3430_SR_ERRMAXLIMIT 0x02 144 145 /** 146 * struct omap_sr_pmic_data - Strucutre to be populated by pmic code to pass 147 * pmic specific info to smartreflex driver 148 * 149 * @sr_pmic_init: API to initialize smartreflex on the PMIC side. 150 */ 151 struct omap_sr_pmic_data { 152 void (*sr_pmic_init) (void); 153 }; 154 155 #ifdef CONFIG_OMAP_SMARTREFLEX 156 /* 157 * The smart reflex driver supports CLASS1 CLASS2 and CLASS3 SR. 158 * The smartreflex class driver should pass the class type. 159 * Should be used to populate the class_type field of the 160 * omap_smartreflex_class_data structure. 161 */ 162 #define SR_CLASS1 0x1 163 #define SR_CLASS2 0x2 164 #define SR_CLASS3 0x3 165 166 /** 167 * struct omap_sr_class_data - Smartreflex class driver info 168 * 169 * @enable: API to enable a particular class smaartreflex. 170 * @disable: API to disable a particular class smartreflex. 171 * @configure: API to configure a particular class smartreflex. 172 * @notify: API to notify the class driver about an event in SR. 173 * Not needed for class3. 174 * @notify_flags: specify the events to be notified to the class driver 175 * @class_type: specify which smartreflex class. 176 * Can be used by the SR driver to take any class 177 * based decisions. 178 */ 179 struct omap_sr_class_data { 180 int (*enable)(struct voltagedomain *voltdm); 181 int (*disable)(struct voltagedomain *voltdm, int is_volt_reset); 182 int (*configure)(struct voltagedomain *voltdm); 183 int (*notify)(struct voltagedomain *voltdm, u32 status); 184 u8 notify_flags; 185 u8 class_type; 186 }; 187 188 /** 189 * struct omap_sr_nvalue_table - Smartreflex n-target value info 190 * 191 * @efuse_offs: The offset of the efuse where n-target values are stored. 192 * @nvalue: The n-target value. 193 */ 194 struct omap_sr_nvalue_table { 195 u32 efuse_offs; 196 u32 nvalue; 197 }; 198 199 /** 200 * struct omap_sr_data - Smartreflex platform data. 201 * 202 * @ip_type: Smartreflex IP type. 203 * @senp_mod: SENPENABLE value for the sr 204 * @senn_mod: SENNENABLE value for sr 205 * @nvalue_count: Number of distinct nvalues in the nvalue table 206 * @enable_on_init: whether this sr module needs to enabled at 207 * boot up or not. 208 * @nvalue_table: table containing the efuse offsets and nvalues 209 * corresponding to them. 210 * @voltdm: Pointer to the voltage domain associated with the SR 211 */ 212 struct omap_sr_data { 213 int ip_type; 214 u32 senp_mod; 215 u32 senn_mod; 216 int nvalue_count; 217 bool enable_on_init; 218 struct omap_sr_nvalue_table *nvalue_table; 219 struct voltagedomain *voltdm; 220 }; 221 222 /* Smartreflex module enable/disable interface */ 223 void omap_sr_enable(struct voltagedomain *voltdm); 224 void omap_sr_disable(struct voltagedomain *voltdm); 225 void omap_sr_disable_reset_volt(struct voltagedomain *voltdm); 226 227 /* API to register the pmic specific data with the smartreflex driver. */ 228 void omap_sr_register_pmic(struct omap_sr_pmic_data *pmic_data); 229 230 /* Smartreflex driver hooks to be called from Smartreflex class driver */ 231 int sr_enable(struct voltagedomain *voltdm, unsigned long volt); 232 void sr_disable(struct voltagedomain *voltdm); 233 int sr_configure_errgen(struct voltagedomain *voltdm); 234 int sr_configure_minmax(struct voltagedomain *voltdm); 235 236 /* API to register the smartreflex class driver with the smartreflex driver */ 237 int sr_register_class(struct omap_sr_class_data *class_data); 238 #else omap_sr_enable(struct voltagedomain * voltdm)239static inline void omap_sr_enable(struct voltagedomain *voltdm) {} omap_sr_disable(struct voltagedomain * voltdm)240static inline void omap_sr_disable(struct voltagedomain *voltdm) {} omap_sr_disable_reset_volt(struct voltagedomain * voltdm)241static inline void omap_sr_disable_reset_volt( 242 struct voltagedomain *voltdm) {} omap_sr_register_pmic(struct omap_sr_pmic_data * pmic_data)243static inline void omap_sr_register_pmic( 244 struct omap_sr_pmic_data *pmic_data) {} 245 #endif 246 #endif 247