linux/drivers/mfd/qcom_rpm.c
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   1/*
   2 * Copyright (c) 2014, Sony Mobile Communications AB.
   3 * Copyright (c) 2013, The Linux Foundation. All rights reserved.
   4 * Author: Bjorn Andersson <bjorn.andersson@sonymobile.com>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 and
   8 * only version 2 as published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 */
  15
  16#include <linux/module.h>
  17#include <linux/platform_device.h>
  18#include <linux/of_platform.h>
  19#include <linux/io.h>
  20#include <linux/interrupt.h>
  21#include <linux/mfd/qcom_rpm.h>
  22#include <linux/mfd/syscon.h>
  23#include <linux/regmap.h>
  24
  25#include <dt-bindings/mfd/qcom-rpm.h>
  26
  27struct qcom_rpm_resource {
  28        unsigned target_id;
  29        unsigned status_id;
  30        unsigned select_id;
  31        unsigned size;
  32};
  33
  34struct qcom_rpm_data {
  35        u32 version;
  36        const struct qcom_rpm_resource *resource_table;
  37        unsigned n_resources;
  38};
  39
  40struct qcom_rpm {
  41        struct device *dev;
  42        struct regmap *ipc_regmap;
  43        unsigned ipc_offset;
  44        unsigned ipc_bit;
  45
  46        struct completion ack;
  47        struct mutex lock;
  48
  49        void __iomem *status_regs;
  50        void __iomem *ctrl_regs;
  51        void __iomem *req_regs;
  52
  53        u32 ack_status;
  54
  55        const struct qcom_rpm_data *data;
  56};
  57
  58#define RPM_STATUS_REG(rpm, i)  ((rpm)->status_regs + (i) * 4)
  59#define RPM_CTRL_REG(rpm, i)    ((rpm)->ctrl_regs + (i) * 4)
  60#define RPM_REQ_REG(rpm, i)     ((rpm)->req_regs + (i) * 4)
  61
  62#define RPM_REQUEST_TIMEOUT     (5 * HZ)
  63
  64#define RPM_REQUEST_CONTEXT     3
  65#define RPM_REQ_SELECT          11
  66#define RPM_ACK_CONTEXT         15
  67#define RPM_ACK_SELECTOR        23
  68#define RPM_SELECT_SIZE         7
  69
  70#define RPM_NOTIFICATION        BIT(30)
  71#define RPM_REJECTED            BIT(31)
  72
  73#define RPM_SIGNAL              BIT(2)
  74
  75static const struct qcom_rpm_resource apq8064_rpm_resource_table[] = {
  76        [QCOM_RPM_CXO_CLK] =                    { 25, 9, 5, 1 },
  77        [QCOM_RPM_PXO_CLK] =                    { 26, 10, 6, 1 },
  78        [QCOM_RPM_APPS_FABRIC_CLK] =            { 27, 11, 8, 1 },
  79        [QCOM_RPM_SYS_FABRIC_CLK] =             { 28, 12, 9, 1 },
  80        [QCOM_RPM_MM_FABRIC_CLK] =              { 29, 13, 10, 1 },
  81        [QCOM_RPM_DAYTONA_FABRIC_CLK] =         { 30, 14, 11, 1 },
  82        [QCOM_RPM_SFPB_CLK] =                   { 31, 15, 12, 1 },
  83        [QCOM_RPM_CFPB_CLK] =                   { 32, 16, 13, 1 },
  84        [QCOM_RPM_MMFPB_CLK] =                  { 33, 17, 14, 1 },
  85        [QCOM_RPM_EBI1_CLK] =                   { 34, 18, 16, 1 },
  86        [QCOM_RPM_APPS_FABRIC_HALT] =           { 35, 19, 18, 1 },
  87        [QCOM_RPM_APPS_FABRIC_MODE] =           { 37, 20, 19, 1 },
  88        [QCOM_RPM_APPS_FABRIC_IOCTL] =          { 40, 21, 20, 1 },
  89        [QCOM_RPM_APPS_FABRIC_ARB] =            { 41, 22, 21, 12 },
  90        [QCOM_RPM_SYS_FABRIC_HALT] =            { 53, 23, 22, 1 },
  91        [QCOM_RPM_SYS_FABRIC_MODE] =            { 55, 24, 23, 1 },
  92        [QCOM_RPM_SYS_FABRIC_IOCTL] =           { 58, 25, 24, 1 },
  93        [QCOM_RPM_SYS_FABRIC_ARB] =             { 59, 26, 25, 30 },
  94        [QCOM_RPM_MM_FABRIC_HALT] =             { 89, 27, 26, 1 },
  95        [QCOM_RPM_MM_FABRIC_MODE] =             { 91, 28, 27, 1 },
  96        [QCOM_RPM_MM_FABRIC_IOCTL] =            { 94, 29, 28, 1 },
  97        [QCOM_RPM_MM_FABRIC_ARB] =              { 95, 30, 29, 21 },
  98        [QCOM_RPM_PM8921_SMPS1] =               { 116, 31, 30, 2 },
  99        [QCOM_RPM_PM8921_SMPS2] =               { 118, 33, 31, 2 },
 100        [QCOM_RPM_PM8921_SMPS3] =               { 120, 35, 32, 2 },
 101        [QCOM_RPM_PM8921_SMPS4] =               { 122, 37, 33, 2 },
 102        [QCOM_RPM_PM8921_SMPS5] =               { 124, 39, 34, 2 },
 103        [QCOM_RPM_PM8921_SMPS6] =               { 126, 41, 35, 2 },
 104        [QCOM_RPM_PM8921_SMPS7] =               { 128, 43, 36, 2 },
 105        [QCOM_RPM_PM8921_SMPS8] =               { 130, 45, 37, 2 },
 106        [QCOM_RPM_PM8921_LDO1] =                { 132, 47, 38, 2 },
 107        [QCOM_RPM_PM8921_LDO2] =                { 134, 49, 39, 2 },
 108        [QCOM_RPM_PM8921_LDO3] =                { 136, 51, 40, 2 },
 109        [QCOM_RPM_PM8921_LDO4] =                { 138, 53, 41, 2 },
 110        [QCOM_RPM_PM8921_LDO5] =                { 140, 55, 42, 2 },
 111        [QCOM_RPM_PM8921_LDO6] =                { 142, 57, 43, 2 },
 112        [QCOM_RPM_PM8921_LDO7] =                { 144, 59, 44, 2 },
 113        [QCOM_RPM_PM8921_LDO8] =                { 146, 61, 45, 2 },
 114        [QCOM_RPM_PM8921_LDO9] =                { 148, 63, 46, 2 },
 115        [QCOM_RPM_PM8921_LDO10] =               { 150, 65, 47, 2 },
 116        [QCOM_RPM_PM8921_LDO11] =               { 152, 67, 48, 2 },
 117        [QCOM_RPM_PM8921_LDO12] =               { 154, 69, 49, 2 },
 118        [QCOM_RPM_PM8921_LDO13] =               { 156, 71, 50, 2 },
 119        [QCOM_RPM_PM8921_LDO14] =               { 158, 73, 51, 2 },
 120        [QCOM_RPM_PM8921_LDO15] =               { 160, 75, 52, 2 },
 121        [QCOM_RPM_PM8921_LDO16] =               { 162, 77, 53, 2 },
 122        [QCOM_RPM_PM8921_LDO17] =               { 164, 79, 54, 2 },
 123        [QCOM_RPM_PM8921_LDO18] =               { 166, 81, 55, 2 },
 124        [QCOM_RPM_PM8921_LDO19] =               { 168, 83, 56, 2 },
 125        [QCOM_RPM_PM8921_LDO20] =               { 170, 85, 57, 2 },
 126        [QCOM_RPM_PM8921_LDO21] =               { 172, 87, 58, 2 },
 127        [QCOM_RPM_PM8921_LDO22] =               { 174, 89, 59, 2 },
 128        [QCOM_RPM_PM8921_LDO23] =               { 176, 91, 60, 2 },
 129        [QCOM_RPM_PM8921_LDO24] =               { 178, 93, 61, 2 },
 130        [QCOM_RPM_PM8921_LDO25] =               { 180, 95, 62, 2 },
 131        [QCOM_RPM_PM8921_LDO26] =               { 182, 97, 63, 2 },
 132        [QCOM_RPM_PM8921_LDO27] =               { 184, 99, 64, 2 },
 133        [QCOM_RPM_PM8921_LDO28] =               { 186, 101, 65, 2 },
 134        [QCOM_RPM_PM8921_LDO29] =               { 188, 103, 66, 2 },
 135        [QCOM_RPM_PM8921_CLK1] =                { 190, 105, 67, 2 },
 136        [QCOM_RPM_PM8921_CLK2] =                { 192, 107, 68, 2 },
 137        [QCOM_RPM_PM8921_LVS1] =                { 194, 109, 69, 1 },
 138        [QCOM_RPM_PM8921_LVS2] =                { 195, 110, 70, 1 },
 139        [QCOM_RPM_PM8921_LVS3] =                { 196, 111, 71, 1 },
 140        [QCOM_RPM_PM8921_LVS4] =                { 197, 112, 72, 1 },
 141        [QCOM_RPM_PM8921_LVS5] =                { 198, 113, 73, 1 },
 142        [QCOM_RPM_PM8921_LVS6] =                { 199, 114, 74, 1 },
 143        [QCOM_RPM_PM8921_LVS7] =                { 200, 115, 75, 1 },
 144        [QCOM_RPM_PM8821_SMPS1] =               { 201, 116, 76, 2 },
 145        [QCOM_RPM_PM8821_SMPS2] =               { 203, 118, 77, 2 },
 146        [QCOM_RPM_PM8821_LDO1] =                { 205, 120, 78, 2 },
 147        [QCOM_RPM_PM8921_NCP] =                 { 207, 122, 80, 2 },
 148        [QCOM_RPM_CXO_BUFFERS] =                { 209, 124, 81, 1 },
 149        [QCOM_RPM_USB_OTG_SWITCH] =             { 210, 125, 82, 1 },
 150        [QCOM_RPM_HDMI_SWITCH] =                { 211, 126, 83, 1 },
 151        [QCOM_RPM_DDR_DMM] =                    { 212, 127, 84, 2 },
 152        [QCOM_RPM_QDSS_CLK] =                   { 214, ~0, 7, 1 },
 153        [QCOM_RPM_VDDMIN_GPIO] =                { 215, 131, 89, 1 },
 154};
 155
 156static const struct qcom_rpm_data apq8064_template = {
 157        .version = 3,
 158        .resource_table = apq8064_rpm_resource_table,
 159        .n_resources = ARRAY_SIZE(apq8064_rpm_resource_table),
 160};
 161
 162static const struct qcom_rpm_resource msm8660_rpm_resource_table[] = {
 163        [QCOM_RPM_CXO_CLK] =                    { 32, 12, 5, 1 },
 164        [QCOM_RPM_PXO_CLK] =                    { 33, 13, 6, 1 },
 165        [QCOM_RPM_PLL_4] =                      { 34, 14, 7, 1 },
 166        [QCOM_RPM_APPS_FABRIC_CLK] =            { 35, 15, 8, 1 },
 167        [QCOM_RPM_SYS_FABRIC_CLK] =             { 36, 16, 9, 1 },
 168        [QCOM_RPM_MM_FABRIC_CLK] =              { 37, 17, 10, 1 },
 169        [QCOM_RPM_DAYTONA_FABRIC_CLK] =         { 38, 18, 11, 1 },
 170        [QCOM_RPM_SFPB_CLK] =                   { 39, 19, 12, 1 },
 171        [QCOM_RPM_CFPB_CLK] =                   { 40, 20, 13, 1 },
 172        [QCOM_RPM_MMFPB_CLK] =                  { 41, 21, 14, 1 },
 173        [QCOM_RPM_SMI_CLK] =                    { 42, 22, 15, 1 },
 174        [QCOM_RPM_EBI1_CLK] =                   { 43, 23, 16, 1 },
 175        [QCOM_RPM_APPS_L2_CACHE_CTL] =          { 44, 24, 17, 1 },
 176        [QCOM_RPM_APPS_FABRIC_HALT] =           { 45, 25, 18, 2 },
 177        [QCOM_RPM_APPS_FABRIC_MODE] =           { 47, 26, 19, 3 },
 178        [QCOM_RPM_APPS_FABRIC_ARB] =            { 51, 28, 21, 6 },
 179        [QCOM_RPM_SYS_FABRIC_HALT] =            { 63, 29, 22, 2 },
 180        [QCOM_RPM_SYS_FABRIC_MODE] =            { 65, 30, 23, 3 },
 181        [QCOM_RPM_SYS_FABRIC_ARB] =             { 69, 32, 25, 22 },
 182        [QCOM_RPM_MM_FABRIC_HALT] =             { 105, 33, 26, 2 },
 183        [QCOM_RPM_MM_FABRIC_MODE] =             { 107, 34, 27, 3 },
 184        [QCOM_RPM_MM_FABRIC_ARB] =              { 111, 36, 29, 23 },
 185        [QCOM_RPM_PM8901_SMPS0] =               { 134, 37, 30, 2 },
 186        [QCOM_RPM_PM8901_SMPS1] =               { 136, 39, 31, 2 },
 187        [QCOM_RPM_PM8901_SMPS2] =               { 138, 41, 32, 2 },
 188        [QCOM_RPM_PM8901_SMPS3] =               { 140, 43, 33, 2 },
 189        [QCOM_RPM_PM8901_SMPS4] =               { 142, 45, 34, 2 },
 190        [QCOM_RPM_PM8901_LDO0] =                { 144, 47, 35, 2 },
 191        [QCOM_RPM_PM8901_LDO1] =                { 146, 49, 36, 2 },
 192        [QCOM_RPM_PM8901_LDO2] =                { 148, 51, 37, 2 },
 193        [QCOM_RPM_PM8901_LDO3] =                { 150, 53, 38, 2 },
 194        [QCOM_RPM_PM8901_LDO4] =                { 152, 55, 39, 2 },
 195        [QCOM_RPM_PM8901_LDO5] =                { 154, 57, 40, 2 },
 196        [QCOM_RPM_PM8901_LDO6] =                { 156, 59, 41, 2 },
 197        [QCOM_RPM_PM8901_LVS0] =                { 158, 61, 42, 1 },
 198        [QCOM_RPM_PM8901_LVS1] =                { 159, 62, 43, 1 },
 199        [QCOM_RPM_PM8901_LVS2] =                { 160, 63, 44, 1 },
 200        [QCOM_RPM_PM8901_LVS3] =                { 161, 64, 45, 1 },
 201        [QCOM_RPM_PM8901_MVS] =                 { 162, 65, 46, 1 },
 202        [QCOM_RPM_PM8058_SMPS0] =               { 163, 66, 47, 2 },
 203        [QCOM_RPM_PM8058_SMPS1] =               { 165, 68, 48, 2 },
 204        [QCOM_RPM_PM8058_SMPS2] =               { 167, 70, 49, 2 },
 205        [QCOM_RPM_PM8058_SMPS3] =               { 169, 72, 50, 2 },
 206        [QCOM_RPM_PM8058_SMPS4] =               { 171, 74, 51, 2 },
 207        [QCOM_RPM_PM8058_LDO0] =                { 173, 76, 52, 2 },
 208        [QCOM_RPM_PM8058_LDO1] =                { 175, 78, 53, 2 },
 209        [QCOM_RPM_PM8058_LDO2] =                { 177, 80, 54, 2 },
 210        [QCOM_RPM_PM8058_LDO3] =                { 179, 82, 55, 2 },
 211        [QCOM_RPM_PM8058_LDO4] =                { 181, 84, 56, 2 },
 212        [QCOM_RPM_PM8058_LDO5] =                { 183, 86, 57, 2 },
 213        [QCOM_RPM_PM8058_LDO6] =                { 185, 88, 58, 2 },
 214        [QCOM_RPM_PM8058_LDO7] =                { 187, 90, 59, 2 },
 215        [QCOM_RPM_PM8058_LDO8] =                { 189, 92, 60, 2 },
 216        [QCOM_RPM_PM8058_LDO9] =                { 191, 94, 61, 2 },
 217        [QCOM_RPM_PM8058_LDO10] =               { 193, 96, 62, 2 },
 218        [QCOM_RPM_PM8058_LDO11] =               { 195, 98, 63, 2 },
 219        [QCOM_RPM_PM8058_LDO12] =               { 197, 100, 64, 2 },
 220        [QCOM_RPM_PM8058_LDO13] =               { 199, 102, 65, 2 },
 221        [QCOM_RPM_PM8058_LDO14] =               { 201, 104, 66, 2 },
 222        [QCOM_RPM_PM8058_LDO15] =               { 203, 106, 67, 2 },
 223        [QCOM_RPM_PM8058_LDO16] =               { 205, 108, 68, 2 },
 224        [QCOM_RPM_PM8058_LDO17] =               { 207, 110, 69, 2 },
 225        [QCOM_RPM_PM8058_LDO18] =               { 209, 112, 70, 2 },
 226        [QCOM_RPM_PM8058_LDO19] =               { 211, 114, 71, 2 },
 227        [QCOM_RPM_PM8058_LDO20] =               { 213, 116, 72, 2 },
 228        [QCOM_RPM_PM8058_LDO21] =               { 215, 118, 73, 2 },
 229        [QCOM_RPM_PM8058_LDO22] =               { 217, 120, 74, 2 },
 230        [QCOM_RPM_PM8058_LDO23] =               { 219, 122, 75, 2 },
 231        [QCOM_RPM_PM8058_LDO24] =               { 221, 124, 76, 2 },
 232        [QCOM_RPM_PM8058_LDO25] =               { 223, 126, 77, 2 },
 233        [QCOM_RPM_PM8058_LVS0] =                { 225, 128, 78, 1 },
 234        [QCOM_RPM_PM8058_LVS1] =                { 226, 129, 79, 1 },
 235        [QCOM_RPM_PM8058_NCP] =                 { 227, 130, 80, 2 },
 236        [QCOM_RPM_CXO_BUFFERS] =                { 229, 132, 81, 1 },
 237};
 238
 239static const struct qcom_rpm_data msm8660_template = {
 240        .version = 2,
 241        .resource_table = msm8660_rpm_resource_table,
 242        .n_resources = ARRAY_SIZE(msm8660_rpm_resource_table),
 243};
 244
 245static const struct qcom_rpm_resource msm8960_rpm_resource_table[] = {
 246        [QCOM_RPM_CXO_CLK] =                    { 25, 9, 5, 1 },
 247        [QCOM_RPM_PXO_CLK] =                    { 26, 10, 6, 1 },
 248        [QCOM_RPM_APPS_FABRIC_CLK] =            { 27, 11, 8, 1 },
 249        [QCOM_RPM_SYS_FABRIC_CLK] =             { 28, 12, 9, 1 },
 250        [QCOM_RPM_MM_FABRIC_CLK] =              { 29, 13, 10, 1 },
 251        [QCOM_RPM_DAYTONA_FABRIC_CLK] =         { 30, 14, 11, 1 },
 252        [QCOM_RPM_SFPB_CLK] =                   { 31, 15, 12, 1 },
 253        [QCOM_RPM_CFPB_CLK] =                   { 32, 16, 13, 1 },
 254        [QCOM_RPM_MMFPB_CLK] =                  { 33, 17, 14, 1 },
 255        [QCOM_RPM_EBI1_CLK] =                   { 34, 18, 16, 1 },
 256        [QCOM_RPM_APPS_FABRIC_HALT] =           { 35, 19, 18, 1 },
 257        [QCOM_RPM_APPS_FABRIC_MODE] =           { 37, 20, 19, 1 },
 258        [QCOM_RPM_APPS_FABRIC_IOCTL] =          { 40, 21, 20, 1 },
 259        [QCOM_RPM_APPS_FABRIC_ARB] =            { 41, 22, 21, 12 },
 260        [QCOM_RPM_SYS_FABRIC_HALT] =            { 53, 23, 22, 1 },
 261        [QCOM_RPM_SYS_FABRIC_MODE] =            { 55, 24, 23, 1 },
 262        [QCOM_RPM_SYS_FABRIC_IOCTL] =           { 58, 25, 24, 1 },
 263        [QCOM_RPM_SYS_FABRIC_ARB] =             { 59, 26, 25, 29 },
 264        [QCOM_RPM_MM_FABRIC_HALT] =             { 88, 27, 26, 1 },
 265        [QCOM_RPM_MM_FABRIC_MODE] =             { 90, 28, 27, 1 },
 266        [QCOM_RPM_MM_FABRIC_IOCTL] =            { 93, 29, 28, 1 },
 267        [QCOM_RPM_MM_FABRIC_ARB] =              { 94, 30, 29, 23 },
 268        [QCOM_RPM_PM8921_SMPS1] =               { 117, 31, 30, 2 },
 269        [QCOM_RPM_PM8921_SMPS2] =               { 119, 33, 31, 2 },
 270        [QCOM_RPM_PM8921_SMPS3] =               { 121, 35, 32, 2 },
 271        [QCOM_RPM_PM8921_SMPS4] =               { 123, 37, 33, 2 },
 272        [QCOM_RPM_PM8921_SMPS5] =               { 125, 39, 34, 2 },
 273        [QCOM_RPM_PM8921_SMPS6] =               { 127, 41, 35, 2 },
 274        [QCOM_RPM_PM8921_SMPS7] =               { 129, 43, 36, 2 },
 275        [QCOM_RPM_PM8921_SMPS8] =               { 131, 45, 37, 2 },
 276        [QCOM_RPM_PM8921_LDO1] =                { 133, 47, 38, 2 },
 277        [QCOM_RPM_PM8921_LDO2] =                { 135, 49, 39, 2 },
 278        [QCOM_RPM_PM8921_LDO3] =                { 137, 51, 40, 2 },
 279        [QCOM_RPM_PM8921_LDO4] =                { 139, 53, 41, 2 },
 280        [QCOM_RPM_PM8921_LDO5] =                { 141, 55, 42, 2 },
 281        [QCOM_RPM_PM8921_LDO6] =                { 143, 57, 43, 2 },
 282        [QCOM_RPM_PM8921_LDO7] =                { 145, 59, 44, 2 },
 283        [QCOM_RPM_PM8921_LDO8] =                { 147, 61, 45, 2 },
 284        [QCOM_RPM_PM8921_LDO9] =                { 149, 63, 46, 2 },
 285        [QCOM_RPM_PM8921_LDO10] =               { 151, 65, 47, 2 },
 286        [QCOM_RPM_PM8921_LDO11] =               { 153, 67, 48, 2 },
 287        [QCOM_RPM_PM8921_LDO12] =               { 155, 69, 49, 2 },
 288        [QCOM_RPM_PM8921_LDO13] =               { 157, 71, 50, 2 },
 289        [QCOM_RPM_PM8921_LDO14] =               { 159, 73, 51, 2 },
 290        [QCOM_RPM_PM8921_LDO15] =               { 161, 75, 52, 2 },
 291        [QCOM_RPM_PM8921_LDO16] =               { 163, 77, 53, 2 },
 292        [QCOM_RPM_PM8921_LDO17] =               { 165, 79, 54, 2 },
 293        [QCOM_RPM_PM8921_LDO18] =               { 167, 81, 55, 2 },
 294        [QCOM_RPM_PM8921_LDO19] =               { 169, 83, 56, 2 },
 295        [QCOM_RPM_PM8921_LDO20] =               { 171, 85, 57, 2 },
 296        [QCOM_RPM_PM8921_LDO21] =               { 173, 87, 58, 2 },
 297        [QCOM_RPM_PM8921_LDO22] =               { 175, 89, 59, 2 },
 298        [QCOM_RPM_PM8921_LDO23] =               { 177, 91, 60, 2 },
 299        [QCOM_RPM_PM8921_LDO24] =               { 179, 93, 61, 2 },
 300        [QCOM_RPM_PM8921_LDO25] =               { 181, 95, 62, 2 },
 301        [QCOM_RPM_PM8921_LDO26] =               { 183, 97, 63, 2 },
 302        [QCOM_RPM_PM8921_LDO27] =               { 185, 99, 64, 2 },
 303        [QCOM_RPM_PM8921_LDO28] =               { 187, 101, 65, 2 },
 304        [QCOM_RPM_PM8921_LDO29] =               { 189, 103, 66, 2 },
 305        [QCOM_RPM_PM8921_CLK1] =                { 191, 105, 67, 2 },
 306        [QCOM_RPM_PM8921_CLK2] =                { 193, 107, 68, 2 },
 307        [QCOM_RPM_PM8921_LVS1] =                { 195, 109, 69, 1 },
 308        [QCOM_RPM_PM8921_LVS2] =                { 196, 110, 70, 1 },
 309        [QCOM_RPM_PM8921_LVS3] =                { 197, 111, 71, 1 },
 310        [QCOM_RPM_PM8921_LVS4] =                { 198, 112, 72, 1 },
 311        [QCOM_RPM_PM8921_LVS5] =                { 199, 113, 73, 1 },
 312        [QCOM_RPM_PM8921_LVS6] =                { 200, 114, 74, 1 },
 313        [QCOM_RPM_PM8921_LVS7] =                { 201, 115, 75, 1 },
 314        [QCOM_RPM_PM8921_NCP] =                 { 202, 116, 80, 2 },
 315        [QCOM_RPM_CXO_BUFFERS] =                { 204, 118, 81, 1 },
 316        [QCOM_RPM_USB_OTG_SWITCH] =             { 205, 119, 82, 1 },
 317        [QCOM_RPM_HDMI_SWITCH] =                { 206, 120, 83, 1 },
 318        [QCOM_RPM_DDR_DMM] =                    { 207, 121, 84, 2 },
 319};
 320
 321static const struct qcom_rpm_data msm8960_template = {
 322        .version = 3,
 323        .resource_table = msm8960_rpm_resource_table,
 324        .n_resources = ARRAY_SIZE(msm8960_rpm_resource_table),
 325};
 326
 327static const struct qcom_rpm_resource ipq806x_rpm_resource_table[] = {
 328        [QCOM_RPM_CXO_CLK] =                    { 25, 9, 5, 1 },
 329        [QCOM_RPM_PXO_CLK] =                    { 26, 10, 6, 1 },
 330        [QCOM_RPM_APPS_FABRIC_CLK] =            { 27, 11, 8, 1 },
 331        [QCOM_RPM_SYS_FABRIC_CLK] =             { 28, 12, 9, 1 },
 332        [QCOM_RPM_NSS_FABRIC_0_CLK] =           { 29, 13, 10, 1 },
 333        [QCOM_RPM_DAYTONA_FABRIC_CLK] =         { 30, 14, 11, 1 },
 334        [QCOM_RPM_SFPB_CLK] =                   { 31, 15, 12, 1 },
 335        [QCOM_RPM_CFPB_CLK] =                   { 32, 16, 13, 1 },
 336        [QCOM_RPM_NSS_FABRIC_1_CLK] =           { 33, 17, 14, 1 },
 337        [QCOM_RPM_EBI1_CLK] =                   { 34, 18, 16, 1 },
 338        [QCOM_RPM_APPS_FABRIC_HALT] =           { 35, 19, 18, 2 },
 339        [QCOM_RPM_APPS_FABRIC_MODE] =           { 37, 20, 19, 3 },
 340        [QCOM_RPM_APPS_FABRIC_IOCTL] =          { 40, 21, 20, 1 },
 341        [QCOM_RPM_APPS_FABRIC_ARB] =            { 41, 22, 21, 12 },
 342        [QCOM_RPM_SYS_FABRIC_HALT] =            { 53, 23, 22, 2 },
 343        [QCOM_RPM_SYS_FABRIC_MODE] =            { 55, 24, 23, 3 },
 344        [QCOM_RPM_SYS_FABRIC_IOCTL] =           { 58, 25, 24, 1 },
 345        [QCOM_RPM_SYS_FABRIC_ARB] =             { 59, 26, 25, 30 },
 346        [QCOM_RPM_MM_FABRIC_HALT] =             { 89, 27, 26, 2 },
 347        [QCOM_RPM_MM_FABRIC_MODE] =             { 91, 28, 27, 3 },
 348        [QCOM_RPM_MM_FABRIC_IOCTL] =            { 94, 29, 28, 1 },
 349        [QCOM_RPM_MM_FABRIC_ARB] =              { 95, 30, 29, 2 },
 350        [QCOM_RPM_CXO_BUFFERS] =                { 209, 33, 31, 1 },
 351        [QCOM_RPM_USB_OTG_SWITCH] =             { 210, 34, 32, 1 },
 352        [QCOM_RPM_HDMI_SWITCH] =                { 211, 35, 33, 1 },
 353        [QCOM_RPM_DDR_DMM] =                    { 212, 36, 34, 2 },
 354        [QCOM_RPM_VDDMIN_GPIO] =                { 215, 40, 39, 1 },
 355        [QCOM_RPM_SMB208_S1a] =                 { 216, 41, 90, 2 },
 356        [QCOM_RPM_SMB208_S1b] =                 { 218, 43, 91, 2 },
 357        [QCOM_RPM_SMB208_S2a] =                 { 220, 45, 92, 2 },
 358        [QCOM_RPM_SMB208_S2b] =                 { 222, 47, 93, 2 },
 359};
 360
 361static const struct qcom_rpm_data ipq806x_template = {
 362        .version = 3,
 363        .resource_table = ipq806x_rpm_resource_table,
 364        .n_resources = ARRAY_SIZE(ipq806x_rpm_resource_table),
 365};
 366
 367static const struct of_device_id qcom_rpm_of_match[] = {
 368        { .compatible = "qcom,rpm-apq8064", .data = &apq8064_template },
 369        { .compatible = "qcom,rpm-msm8660", .data = &msm8660_template },
 370        { .compatible = "qcom,rpm-msm8960", .data = &msm8960_template },
 371        { .compatible = "qcom,rpm-ipq8064", .data = &ipq806x_template },
 372        { }
 373};
 374MODULE_DEVICE_TABLE(of, qcom_rpm_of_match);
 375
 376int qcom_rpm_write(struct qcom_rpm *rpm,
 377                   int state,
 378                   int resource,
 379                   u32 *buf, size_t count)
 380{
 381        const struct qcom_rpm_resource *res;
 382        const struct qcom_rpm_data *data = rpm->data;
 383        u32 sel_mask[RPM_SELECT_SIZE] = { 0 };
 384        int left;
 385        int ret = 0;
 386        int i;
 387
 388        if (WARN_ON(resource < 0 || resource >= data->n_resources))
 389                return -EINVAL;
 390
 391        res = &data->resource_table[resource];
 392        if (WARN_ON(res->size != count))
 393                return -EINVAL;
 394
 395        mutex_lock(&rpm->lock);
 396
 397        for (i = 0; i < res->size; i++)
 398                writel_relaxed(buf[i], RPM_REQ_REG(rpm, res->target_id + i));
 399
 400        bitmap_set((unsigned long *)sel_mask, res->select_id, 1);
 401        for (i = 0; i < ARRAY_SIZE(sel_mask); i++) {
 402                writel_relaxed(sel_mask[i],
 403                               RPM_CTRL_REG(rpm, RPM_REQ_SELECT + i));
 404        }
 405
 406        writel_relaxed(BIT(state), RPM_CTRL_REG(rpm, RPM_REQUEST_CONTEXT));
 407
 408        reinit_completion(&rpm->ack);
 409        regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
 410
 411        left = wait_for_completion_timeout(&rpm->ack, RPM_REQUEST_TIMEOUT);
 412        if (!left)
 413                ret = -ETIMEDOUT;
 414        else if (rpm->ack_status & RPM_REJECTED)
 415                ret = -EIO;
 416
 417        mutex_unlock(&rpm->lock);
 418
 419        return ret;
 420}
 421EXPORT_SYMBOL(qcom_rpm_write);
 422
 423static irqreturn_t qcom_rpm_ack_interrupt(int irq, void *dev)
 424{
 425        struct qcom_rpm *rpm = dev;
 426        u32 ack;
 427        int i;
 428
 429        ack = readl_relaxed(RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
 430        for (i = 0; i < RPM_SELECT_SIZE; i++)
 431                writel_relaxed(0, RPM_CTRL_REG(rpm, RPM_ACK_SELECTOR + i));
 432        writel(0, RPM_CTRL_REG(rpm, RPM_ACK_CONTEXT));
 433
 434        if (ack & RPM_NOTIFICATION) {
 435                dev_warn(rpm->dev, "ignoring notification!\n");
 436        } else {
 437                rpm->ack_status = ack;
 438                complete(&rpm->ack);
 439        }
 440
 441        return IRQ_HANDLED;
 442}
 443
 444static irqreturn_t qcom_rpm_err_interrupt(int irq, void *dev)
 445{
 446        struct qcom_rpm *rpm = dev;
 447
 448        regmap_write(rpm->ipc_regmap, rpm->ipc_offset, BIT(rpm->ipc_bit));
 449        dev_err(rpm->dev, "RPM triggered fatal error\n");
 450
 451        return IRQ_HANDLED;
 452}
 453
 454static irqreturn_t qcom_rpm_wakeup_interrupt(int irq, void *dev)
 455{
 456        return IRQ_HANDLED;
 457}
 458
 459static int qcom_rpm_probe(struct platform_device *pdev)
 460{
 461        const struct of_device_id *match;
 462        struct device_node *syscon_np;
 463        struct resource *res;
 464        struct qcom_rpm *rpm;
 465        u32 fw_version[3];
 466        int irq_wakeup;
 467        int irq_ack;
 468        int irq_err;
 469        int ret;
 470
 471        rpm = devm_kzalloc(&pdev->dev, sizeof(*rpm), GFP_KERNEL);
 472        if (!rpm)
 473                return -ENOMEM;
 474
 475        rpm->dev = &pdev->dev;
 476        mutex_init(&rpm->lock);
 477        init_completion(&rpm->ack);
 478
 479        irq_ack = platform_get_irq_byname(pdev, "ack");
 480        if (irq_ack < 0) {
 481                dev_err(&pdev->dev, "required ack interrupt missing\n");
 482                return irq_ack;
 483        }
 484
 485        irq_err = platform_get_irq_byname(pdev, "err");
 486        if (irq_err < 0) {
 487                dev_err(&pdev->dev, "required err interrupt missing\n");
 488                return irq_err;
 489        }
 490
 491        irq_wakeup = platform_get_irq_byname(pdev, "wakeup");
 492        if (irq_wakeup < 0) {
 493                dev_err(&pdev->dev, "required wakeup interrupt missing\n");
 494                return irq_wakeup;
 495        }
 496
 497        match = of_match_device(qcom_rpm_of_match, &pdev->dev);
 498        rpm->data = match->data;
 499
 500        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 501        rpm->status_regs = devm_ioremap_resource(&pdev->dev, res);
 502        if (IS_ERR(rpm->status_regs))
 503                return PTR_ERR(rpm->status_regs);
 504        rpm->ctrl_regs = rpm->status_regs + 0x400;
 505        rpm->req_regs = rpm->status_regs + 0x600;
 506
 507        syscon_np = of_parse_phandle(pdev->dev.of_node, "qcom,ipc", 0);
 508        if (!syscon_np) {
 509                dev_err(&pdev->dev, "no qcom,ipc node\n");
 510                return -ENODEV;
 511        }
 512
 513        rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
 514        if (IS_ERR(rpm->ipc_regmap))
 515                return PTR_ERR(rpm->ipc_regmap);
 516
 517        ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 1,
 518                                         &rpm->ipc_offset);
 519        if (ret < 0) {
 520                dev_err(&pdev->dev, "no offset in qcom,ipc\n");
 521                return -EINVAL;
 522        }
 523
 524        ret = of_property_read_u32_index(pdev->dev.of_node, "qcom,ipc", 2,
 525                                         &rpm->ipc_bit);
 526        if (ret < 0) {
 527                dev_err(&pdev->dev, "no bit in qcom,ipc\n");
 528                return -EINVAL;
 529        }
 530
 531        dev_set_drvdata(&pdev->dev, rpm);
 532
 533        fw_version[0] = readl(RPM_STATUS_REG(rpm, 0));
 534        fw_version[1] = readl(RPM_STATUS_REG(rpm, 1));
 535        fw_version[2] = readl(RPM_STATUS_REG(rpm, 2));
 536        if (fw_version[0] != rpm->data->version) {
 537                dev_err(&pdev->dev,
 538                        "RPM version %u.%u.%u incompatible with driver version %u",
 539                        fw_version[0],
 540                        fw_version[1],
 541                        fw_version[2],
 542                        rpm->data->version);
 543                return -EFAULT;
 544        }
 545
 546        dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
 547                                                        fw_version[1],
 548                                                        fw_version[2]);
 549
 550        ret = devm_request_irq(&pdev->dev,
 551                               irq_ack,
 552                               qcom_rpm_ack_interrupt,
 553                               IRQF_TRIGGER_RISING | IRQF_NO_SUSPEND,
 554                               "qcom_rpm_ack",
 555                               rpm);
 556        if (ret) {
 557                dev_err(&pdev->dev, "failed to request ack interrupt\n");
 558                return ret;
 559        }
 560
 561        ret = irq_set_irq_wake(irq_ack, 1);
 562        if (ret)
 563                dev_warn(&pdev->dev, "failed to mark ack irq as wakeup\n");
 564
 565        ret = devm_request_irq(&pdev->dev,
 566                               irq_err,
 567                               qcom_rpm_err_interrupt,
 568                               IRQF_TRIGGER_RISING,
 569                               "qcom_rpm_err",
 570                               rpm);
 571        if (ret) {
 572                dev_err(&pdev->dev, "failed to request err interrupt\n");
 573                return ret;
 574        }
 575
 576        ret = devm_request_irq(&pdev->dev,
 577                               irq_wakeup,
 578                               qcom_rpm_wakeup_interrupt,
 579                               IRQF_TRIGGER_RISING,
 580                               "qcom_rpm_wakeup",
 581                               rpm);
 582        if (ret) {
 583                dev_err(&pdev->dev, "failed to request wakeup interrupt\n");
 584                return ret;
 585        }
 586
 587        ret = irq_set_irq_wake(irq_wakeup, 1);
 588        if (ret)
 589                dev_warn(&pdev->dev, "failed to mark wakeup irq as wakeup\n");
 590
 591        return of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
 592}
 593
 594static int qcom_rpm_remove(struct platform_device *pdev)
 595{
 596        of_platform_depopulate(&pdev->dev);
 597        return 0;
 598}
 599
 600static struct platform_driver qcom_rpm_driver = {
 601        .probe = qcom_rpm_probe,
 602        .remove = qcom_rpm_remove,
 603        .driver  = {
 604                .name  = "qcom_rpm",
 605                .of_match_table = qcom_rpm_of_match,
 606        },
 607};
 608
 609static int __init qcom_rpm_init(void)
 610{
 611        return platform_driver_register(&qcom_rpm_driver);
 612}
 613arch_initcall(qcom_rpm_init);
 614
 615static void __exit qcom_rpm_exit(void)
 616{
 617        platform_driver_unregister(&qcom_rpm_driver);
 618}
 619module_exit(qcom_rpm_exit)
 620
 621MODULE_DESCRIPTION("Qualcomm Resource Power Manager driver");
 622MODULE_LICENSE("GPL v2");
 623MODULE_AUTHOR("Bjorn Andersson <bjorn.andersson@sonymobile.com>");
 624