1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (c) 2020 MediaTek Inc. 4 * 5 * Author: Gene Chen <gene_chen@richtek.com> 6 */ 7 8#include <linux/crc8.h> 9#include <linux/i2c.h> 10#include <linux/init.h> 11#include <linux/interrupt.h> 12#include <linux/kernel.h> 13#include <linux/mfd/core.h> 14#include <linux/module.h> 15#include <linux/regmap.h> 16#include <linux/slab.h> 17 18enum { 19 MT6360_SLAVE_TCPC = 0, 20 MT6360_SLAVE_PMIC, 21 MT6360_SLAVE_LDO, 22 MT6360_SLAVE_PMU, 23 MT6360_SLAVE_MAX, 24}; 25 26struct mt6360_ddata { 27 struct i2c_client *i2c[MT6360_SLAVE_MAX]; 28 struct device *dev; 29 struct regmap *regmap; 30 struct regmap_irq_chip_data *irq_data; 31 unsigned int chip_rev; 32 u8 crc8_tbl[CRC8_TABLE_SIZE]; 33}; 34 35#define MT6360_TCPC_SLAVEID 0x4E 36#define MT6360_PMIC_SLAVEID 0x1A 37#define MT6360_LDO_SLAVEID 0x64 38#define MT6360_PMU_SLAVEID 0x34 39 40#define MT6360_REG_TCPCSTART 0x00 41#define MT6360_REG_TCPCEND 0xFF 42#define MT6360_REG_PMICSTART 0x100 43#define MT6360_REG_PMICEND 0x13B 44#define MT6360_REG_LDOSTART 0x200 45#define MT6360_REG_LDOEND 0x21C 46#define MT6360_REG_PMUSTART 0x300 47#define MT6360_PMU_DEV_INFO 0x300 48#define MT6360_PMU_CHG_IRQ1 0x3D0 49#define MT6360_PMU_CHG_MASK1 0x3F0 50#define MT6360_REG_PMUEND 0x3FF 51 52#define MT6360_PMU_IRQ_REGNUM 16 53 54#define CHIP_VEN_MASK 0xF0 55#define CHIP_VEN_MT6360 0x50 56#define CHIP_REV_MASK 0x0F 57 58#define MT6360_ADDRESS_MASK 0x3F 59#define MT6360_DATA_SIZE_1_BYTE 0x00 60#define MT6360_DATA_SIZE_2_BYTES 0x40 61#define MT6360_DATA_SIZE_3_BYTES 0x80 62#define MT6360_DATA_SIZE_4_BYTES 0xC0 63 64#define MT6360_CRC8_POLYNOMIAL 0x7 65 66#define MT6360_CRC_I2C_ADDR_SIZE 1 67#define MT6360_CRC_REG_ADDR_SIZE 1 68/* prealloca read size = i2c device addr + i2c reg addr + val ... + crc8 */ 69#define MT6360_ALLOC_READ_SIZE(_size) (_size + 3) 70/* prealloca write size = i2c device addr + i2c reg addr + val ... + crc8 + dummy byte */ 71#define MT6360_ALLOC_WRITE_SIZE(_size) (_size + 4) 72#define MT6360_CRC_PREDATA_OFFSET (MT6360_CRC_I2C_ADDR_SIZE + MT6360_CRC_REG_ADDR_SIZE) 73#define MT6360_CRC_CRC8_SIZE 1 74#define MT6360_CRC_DUMMY_BYTE_SIZE 1 75#define MT6360_REGMAP_REG_BYTE_SIZE 2 76#define I2C_ADDR_XLATE_8BIT(_addr, _rw) (((_addr & 0x7F) << 1) + _rw) 77 78/* reg 0 -> 0 ~ 7 */ 79#define MT6360_CHG_TREG_EVT 4 80#define MT6360_CHG_AICR_EVT 5 81#define MT6360_CHG_MIVR_EVT 6 82#define MT6360_PWR_RDY_EVT 7 83/* REG 1 -> 8 ~ 15 */ 84#define MT6360_CHG_BATSYSUV_EVT 9 85#define MT6360_FLED_CHG_VINOVP_EVT 11 86#define MT6360_CHG_VSYSUV_EVT 12 87#define MT6360_CHG_VSYSOV_EVT 13 88#define MT6360_CHG_VBATOV_EVT 14 89#define MT6360_CHG_VBUSOV_EVT 15 90/* REG 2 -> 16 ~ 23 */ 91/* REG 3 -> 24 ~ 31 */ 92#define MT6360_WD_PMU_DET 25 93#define MT6360_WD_PMU_DONE 26 94#define MT6360_CHG_TMRI 27 95#define MT6360_CHG_ADPBADI 29 96#define MT6360_CHG_RVPI 30 97#define MT6360_OTPI 31 98/* REG 4 -> 32 ~ 39 */ 99#define MT6360_CHG_AICCMEASL 32 100#define MT6360_CHGDET_DONEI 34 101#define MT6360_WDTMRI 35 102#define MT6360_SSFINISHI 36 103#define MT6360_CHG_RECHGI 37 104#define MT6360_CHG_TERMI 38 105#define MT6360_CHG_IEOCI 39 106/* REG 5 -> 40 ~ 47 */ 107#define MT6360_PUMPX_DONEI 40 108#define MT6360_BAT_OVP_ADC_EVT 41 109#define MT6360_TYPEC_OTP_EVT 42 110#define MT6360_ADC_WAKEUP_EVT 43 111#define MT6360_ADC_DONEI 44 112#define MT6360_BST_BATUVI 45 113#define MT6360_BST_VBUSOVI 46 114#define MT6360_BST_OLPI 47 115/* REG 6 -> 48 ~ 55 */ 116#define MT6360_ATTACH_I 48 117#define MT6360_DETACH_I 49 118#define MT6360_QC30_STPDONE 51 119#define MT6360_QC_VBUSDET_DONE 52 120#define MT6360_HVDCP_DET 53 121#define MT6360_CHGDETI 54 122#define MT6360_DCDTI 55 123/* REG 7 -> 56 ~ 63 */ 124#define MT6360_FOD_DONE_EVT 56 125#define MT6360_FOD_OV_EVT 57 126#define MT6360_CHRDET_UVP_EVT 58 127#define MT6360_CHRDET_OVP_EVT 59 128#define MT6360_CHRDET_EXT_EVT 60 129#define MT6360_FOD_LR_EVT 61 130#define MT6360_FOD_HR_EVT 62 131#define MT6360_FOD_DISCHG_FAIL_EVT 63 132/* REG 8 -> 64 ~ 71 */ 133#define MT6360_USBID_EVT 64 134#define MT6360_APWDTRST_EVT 65 135#define MT6360_EN_EVT 66 136#define MT6360_QONB_RST_EVT 67 137#define MT6360_MRSTB_EVT 68 138#define MT6360_OTP_EVT 69 139#define MT6360_VDDAOV_EVT 70 140#define MT6360_SYSUV_EVT 71 141/* REG 9 -> 72 ~ 79 */ 142#define MT6360_FLED_STRBPIN_EVT 72 143#define MT6360_FLED_TORPIN_EVT 73 144#define MT6360_FLED_TX_EVT 74 145#define MT6360_FLED_LVF_EVT 75 146#define MT6360_FLED2_SHORT_EVT 78 147#define MT6360_FLED1_SHORT_EVT 79 148/* REG 10 -> 80 ~ 87 */ 149#define MT6360_FLED2_STRB_EVT 80 150#define MT6360_FLED1_STRB_EVT 81 151#define MT6360_FLED2_STRB_TO_EVT 82 152#define MT6360_FLED1_STRB_TO_EVT 83 153#define MT6360_FLED2_TOR_EVT 84 154#define MT6360_FLED1_TOR_EVT 85 155/* REG 11 -> 88 ~ 95 */ 156/* REG 12 -> 96 ~ 103 */ 157#define MT6360_BUCK1_PGB_EVT 96 158#define MT6360_BUCK1_OC_EVT 100 159#define MT6360_BUCK1_OV_EVT 101 160#define MT6360_BUCK1_UV_EVT 102 161/* REG 13 -> 104 ~ 111 */ 162#define MT6360_BUCK2_PGB_EVT 104 163#define MT6360_BUCK2_OC_EVT 108 164#define MT6360_BUCK2_OV_EVT 109 165#define MT6360_BUCK2_UV_EVT 110 166/* REG 14 -> 112 ~ 119 */ 167#define MT6360_LDO1_OC_EVT 113 168#define MT6360_LDO2_OC_EVT 114 169#define MT6360_LDO3_OC_EVT 115 170#define MT6360_LDO5_OC_EVT 117 171#define MT6360_LDO6_OC_EVT 118 172#define MT6360_LDO7_OC_EVT 119 173/* REG 15 -> 120 ~ 127 */ 174#define MT6360_LDO1_PGB_EVT 121 175#define MT6360_LDO2_PGB_EVT 122 176#define MT6360_LDO3_PGB_EVT 123 177#define MT6360_LDO5_PGB_EVT 125 178#define MT6360_LDO6_PGB_EVT 126 179#define MT6360_LDO7_PGB_EVT 127 180 181static const struct regmap_irq mt6360_irqs[] = { 182 REGMAP_IRQ_REG_LINE(MT6360_CHG_TREG_EVT, 8), 183 REGMAP_IRQ_REG_LINE(MT6360_CHG_AICR_EVT, 8), 184 REGMAP_IRQ_REG_LINE(MT6360_CHG_MIVR_EVT, 8), 185 REGMAP_IRQ_REG_LINE(MT6360_PWR_RDY_EVT, 8), 186 REGMAP_IRQ_REG_LINE(MT6360_CHG_BATSYSUV_EVT, 8), 187 REGMAP_IRQ_REG_LINE(MT6360_FLED_CHG_VINOVP_EVT, 8), 188 REGMAP_IRQ_REG_LINE(MT6360_CHG_VSYSUV_EVT, 8), 189 REGMAP_IRQ_REG_LINE(MT6360_CHG_VSYSOV_EVT, 8), 190 REGMAP_IRQ_REG_LINE(MT6360_CHG_VBATOV_EVT, 8), 191 REGMAP_IRQ_REG_LINE(MT6360_CHG_VBUSOV_EVT, 8), 192 REGMAP_IRQ_REG_LINE(MT6360_WD_PMU_DET, 8), 193 REGMAP_IRQ_REG_LINE(MT6360_WD_PMU_DONE, 8), 194 REGMAP_IRQ_REG_LINE(MT6360_CHG_TMRI, 8), 195 REGMAP_IRQ_REG_LINE(MT6360_CHG_ADPBADI, 8), 196 REGMAP_IRQ_REG_LINE(MT6360_CHG_RVPI, 8), 197 REGMAP_IRQ_REG_LINE(MT6360_OTPI, 8), 198 REGMAP_IRQ_REG_LINE(MT6360_CHG_AICCMEASL, 8), 199 REGMAP_IRQ_REG_LINE(MT6360_CHGDET_DONEI, 8), 200 REGMAP_IRQ_REG_LINE(MT6360_WDTMRI, 8), 201 REGMAP_IRQ_REG_LINE(MT6360_SSFINISHI, 8), 202 REGMAP_IRQ_REG_LINE(MT6360_CHG_RECHGI, 8), 203 REGMAP_IRQ_REG_LINE(MT6360_CHG_TERMI, 8), 204 REGMAP_IRQ_REG_LINE(MT6360_CHG_IEOCI, 8), 205 REGMAP_IRQ_REG_LINE(MT6360_PUMPX_DONEI, 8), 206 REGMAP_IRQ_REG_LINE(MT6360_BAT_OVP_ADC_EVT, 8), 207 REGMAP_IRQ_REG_LINE(MT6360_TYPEC_OTP_EVT, 8), 208 REGMAP_IRQ_REG_LINE(MT6360_ADC_WAKEUP_EVT, 8), 209 REGMAP_IRQ_REG_LINE(MT6360_ADC_DONEI, 8), 210 REGMAP_IRQ_REG_LINE(MT6360_BST_BATUVI, 8), 211 REGMAP_IRQ_REG_LINE(MT6360_BST_VBUSOVI, 8), 212 REGMAP_IRQ_REG_LINE(MT6360_BST_OLPI, 8), 213 REGMAP_IRQ_REG_LINE(MT6360_ATTACH_I, 8), 214 REGMAP_IRQ_REG_LINE(MT6360_DETACH_I, 8), 215 REGMAP_IRQ_REG_LINE(MT6360_QC30_STPDONE, 8), 216 REGMAP_IRQ_REG_LINE(MT6360_QC_VBUSDET_DONE, 8), 217 REGMAP_IRQ_REG_LINE(MT6360_HVDCP_DET, 8), 218 REGMAP_IRQ_REG_LINE(MT6360_CHGDETI, 8), 219 REGMAP_IRQ_REG_LINE(MT6360_DCDTI, 8), 220 REGMAP_IRQ_REG_LINE(MT6360_FOD_DONE_EVT, 8), 221 REGMAP_IRQ_REG_LINE(MT6360_FOD_OV_EVT, 8), 222 REGMAP_IRQ_REG_LINE(MT6360_CHRDET_UVP_EVT, 8), 223 REGMAP_IRQ_REG_LINE(MT6360_CHRDET_OVP_EVT, 8), 224 REGMAP_IRQ_REG_LINE(MT6360_CHRDET_EXT_EVT, 8), 225 REGMAP_IRQ_REG_LINE(MT6360_FOD_LR_EVT, 8), 226 REGMAP_IRQ_REG_LINE(MT6360_FOD_HR_EVT, 8), 227 REGMAP_IRQ_REG_LINE(MT6360_FOD_DISCHG_FAIL_EVT, 8), 228 REGMAP_IRQ_REG_LINE(MT6360_USBID_EVT, 8), 229 REGMAP_IRQ_REG_LINE(MT6360_APWDTRST_EVT, 8), 230 REGMAP_IRQ_REG_LINE(MT6360_EN_EVT, 8), 231 REGMAP_IRQ_REG_LINE(MT6360_QONB_RST_EVT, 8), 232 REGMAP_IRQ_REG_LINE(MT6360_MRSTB_EVT, 8), 233 REGMAP_IRQ_REG_LINE(MT6360_OTP_EVT, 8), 234 REGMAP_IRQ_REG_LINE(MT6360_VDDAOV_EVT, 8), 235 REGMAP_IRQ_REG_LINE(MT6360_SYSUV_EVT, 8), 236 REGMAP_IRQ_REG_LINE(MT6360_FLED_STRBPIN_EVT, 8), 237 REGMAP_IRQ_REG_LINE(MT6360_FLED_TORPIN_EVT, 8), 238 REGMAP_IRQ_REG_LINE(MT6360_FLED_TX_EVT, 8), 239 REGMAP_IRQ_REG_LINE(MT6360_FLED_LVF_EVT, 8), 240 REGMAP_IRQ_REG_LINE(MT6360_FLED2_SHORT_EVT, 8), 241 REGMAP_IRQ_REG_LINE(MT6360_FLED1_SHORT_EVT, 8), 242 REGMAP_IRQ_REG_LINE(MT6360_FLED2_STRB_EVT, 8), 243 REGMAP_IRQ_REG_LINE(MT6360_FLED1_STRB_EVT, 8), 244 REGMAP_IRQ_REG_LINE(MT6360_FLED2_STRB_TO_EVT, 8), 245 REGMAP_IRQ_REG_LINE(MT6360_FLED1_STRB_TO_EVT, 8), 246 REGMAP_IRQ_REG_LINE(MT6360_FLED2_TOR_EVT, 8), 247 REGMAP_IRQ_REG_LINE(MT6360_FLED1_TOR_EVT, 8), 248 REGMAP_IRQ_REG_LINE(MT6360_BUCK1_PGB_EVT, 8), 249 REGMAP_IRQ_REG_LINE(MT6360_BUCK1_OC_EVT, 8), 250 REGMAP_IRQ_REG_LINE(MT6360_BUCK1_OV_EVT, 8), 251 REGMAP_IRQ_REG_LINE(MT6360_BUCK1_UV_EVT, 8), 252 REGMAP_IRQ_REG_LINE(MT6360_BUCK2_PGB_EVT, 8), 253 REGMAP_IRQ_REG_LINE(MT6360_BUCK2_OC_EVT, 8), 254 REGMAP_IRQ_REG_LINE(MT6360_BUCK2_OV_EVT, 8), 255 REGMAP_IRQ_REG_LINE(MT6360_BUCK2_UV_EVT, 8), 256 REGMAP_IRQ_REG_LINE(MT6360_LDO1_OC_EVT, 8), 257 REGMAP_IRQ_REG_LINE(MT6360_LDO2_OC_EVT, 8), 258 REGMAP_IRQ_REG_LINE(MT6360_LDO3_OC_EVT, 8), 259 REGMAP_IRQ_REG_LINE(MT6360_LDO5_OC_EVT, 8), 260 REGMAP_IRQ_REG_LINE(MT6360_LDO6_OC_EVT, 8), 261 REGMAP_IRQ_REG_LINE(MT6360_LDO7_OC_EVT, 8), 262 REGMAP_IRQ_REG_LINE(MT6360_LDO1_PGB_EVT, 8), 263 REGMAP_IRQ_REG_LINE(MT6360_LDO2_PGB_EVT, 8), 264 REGMAP_IRQ_REG_LINE(MT6360_LDO3_PGB_EVT, 8), 265 REGMAP_IRQ_REG_LINE(MT6360_LDO5_PGB_EVT, 8), 266 REGMAP_IRQ_REG_LINE(MT6360_LDO6_PGB_EVT, 8), 267 REGMAP_IRQ_REG_LINE(MT6360_LDO7_PGB_EVT, 8), 268}; 269 270static const struct regmap_irq_chip mt6360_irq_chip = { 271 .name = "mt6360_irqs", 272 .irqs = mt6360_irqs, 273 .num_irqs = ARRAY_SIZE(mt6360_irqs), 274 .num_regs = MT6360_PMU_IRQ_REGNUM, 275 .mask_base = MT6360_PMU_CHG_MASK1, 276 .status_base = MT6360_PMU_CHG_IRQ1, 277 .ack_base = MT6360_PMU_CHG_IRQ1, 278 .init_ack_masked = true, 279 .use_ack = true, 280}; 281 282static const struct resource mt6360_adc_resources[] = { 283 DEFINE_RES_IRQ_NAMED(MT6360_ADC_DONEI, "adc_donei"), 284}; 285 286static const struct resource mt6360_chg_resources[] = { 287 DEFINE_RES_IRQ_NAMED(MT6360_CHG_TREG_EVT, "chg_treg_evt"), 288 DEFINE_RES_IRQ_NAMED(MT6360_PWR_RDY_EVT, "pwr_rdy_evt"), 289 DEFINE_RES_IRQ_NAMED(MT6360_CHG_BATSYSUV_EVT, "chg_batsysuv_evt"), 290 DEFINE_RES_IRQ_NAMED(MT6360_CHG_VSYSUV_EVT, "chg_vsysuv_evt"), 291 DEFINE_RES_IRQ_NAMED(MT6360_CHG_VSYSOV_EVT, "chg_vsysov_evt"), 292 DEFINE_RES_IRQ_NAMED(MT6360_CHG_VBATOV_EVT, "chg_vbatov_evt"), 293 DEFINE_RES_IRQ_NAMED(MT6360_CHG_VBUSOV_EVT, "chg_vbusov_evt"), 294 DEFINE_RES_IRQ_NAMED(MT6360_CHG_AICCMEASL, "chg_aiccmeasl"), 295 DEFINE_RES_IRQ_NAMED(MT6360_WDTMRI, "wdtmri"), 296 DEFINE_RES_IRQ_NAMED(MT6360_CHG_RECHGI, "chg_rechgi"), 297 DEFINE_RES_IRQ_NAMED(MT6360_CHG_TERMI, "chg_termi"), 298 DEFINE_RES_IRQ_NAMED(MT6360_CHG_IEOCI, "chg_ieoci"), 299 DEFINE_RES_IRQ_NAMED(MT6360_PUMPX_DONEI, "pumpx_donei"), 300 DEFINE_RES_IRQ_NAMED(MT6360_ATTACH_I, "attach_i"), 301 DEFINE_RES_IRQ_NAMED(MT6360_CHRDET_EXT_EVT, "chrdet_ext_evt"), 302}; 303 304static const struct resource mt6360_led_resources[] = { 305 DEFINE_RES_IRQ_NAMED(MT6360_FLED_CHG_VINOVP_EVT, "fled_chg_vinovp_evt"), 306 DEFINE_RES_IRQ_NAMED(MT6360_FLED_LVF_EVT, "fled_lvf_evt"), 307 DEFINE_RES_IRQ_NAMED(MT6360_FLED2_SHORT_EVT, "fled2_short_evt"), 308 DEFINE_RES_IRQ_NAMED(MT6360_FLED1_SHORT_EVT, "fled1_short_evt"), 309 DEFINE_RES_IRQ_NAMED(MT6360_FLED2_STRB_TO_EVT, "fled2_strb_to_evt"), 310 DEFINE_RES_IRQ_NAMED(MT6360_FLED1_STRB_TO_EVT, "fled1_strb_to_evt"), 311}; 312 313static const struct resource mt6360_regulator_resources[] = { 314 DEFINE_RES_IRQ_NAMED(MT6360_BUCK1_PGB_EVT, "buck1_pgb_evt"), 315 DEFINE_RES_IRQ_NAMED(MT6360_BUCK1_OC_EVT, "buck1_oc_evt"), 316 DEFINE_RES_IRQ_NAMED(MT6360_BUCK1_OV_EVT, "buck1_ov_evt"), 317 DEFINE_RES_IRQ_NAMED(MT6360_BUCK1_UV_EVT, "buck1_uv_evt"), 318 DEFINE_RES_IRQ_NAMED(MT6360_BUCK2_PGB_EVT, "buck2_pgb_evt"), 319 DEFINE_RES_IRQ_NAMED(MT6360_BUCK2_OC_EVT, "buck2_oc_evt"), 320 DEFINE_RES_IRQ_NAMED(MT6360_BUCK2_OV_EVT, "buck2_ov_evt"), 321 DEFINE_RES_IRQ_NAMED(MT6360_BUCK2_UV_EVT, "buck2_uv_evt"), 322 DEFINE_RES_IRQ_NAMED(MT6360_LDO1_OC_EVT, "ldo1_oc_evt"), 323 DEFINE_RES_IRQ_NAMED(MT6360_LDO2_OC_EVT, "ldo2_oc_evt"), 324 DEFINE_RES_IRQ_NAMED(MT6360_LDO3_OC_EVT, "ldo3_oc_evt"), 325 DEFINE_RES_IRQ_NAMED(MT6360_LDO5_OC_EVT, "ldo5_oc_evt"), 326 DEFINE_RES_IRQ_NAMED(MT6360_LDO6_OC_EVT, "ldo6_oc_evt"), 327 DEFINE_RES_IRQ_NAMED(MT6360_LDO7_OC_EVT, "ldo7_oc_evt"), 328 DEFINE_RES_IRQ_NAMED(MT6360_LDO1_PGB_EVT, "ldo1_pgb_evt"), 329 DEFINE_RES_IRQ_NAMED(MT6360_LDO2_PGB_EVT, "ldo2_pgb_evt"), 330 DEFINE_RES_IRQ_NAMED(MT6360_LDO3_PGB_EVT, "ldo3_pgb_evt"), 331 DEFINE_RES_IRQ_NAMED(MT6360_LDO5_PGB_EVT, "ldo5_pgb_evt"), 332 DEFINE_RES_IRQ_NAMED(MT6360_LDO6_PGB_EVT, "ldo6_pgb_evt"), 333 DEFINE_RES_IRQ_NAMED(MT6360_LDO7_PGB_EVT, "ldo7_pgb_evt"), 334}; 335 336static const struct mfd_cell mt6360_devs[] = { 337 MFD_CELL_OF("mt6360-adc", mt6360_adc_resources, 338 NULL, 0, 0, "mediatek,mt6360-adc"), 339 MFD_CELL_OF("mt6360-chg", mt6360_chg_resources, 340 NULL, 0, 0, "mediatek,mt6360-chg"), 341 MFD_CELL_OF("mt6360-led", mt6360_led_resources, 342 NULL, 0, 0, "mediatek,mt6360-led"), 343 MFD_CELL_RES("mt6360-regulator", mt6360_regulator_resources), 344 MFD_CELL_OF("mt6360-tcpc", NULL, 345 NULL, 0, 0, "mediatek,mt6360-tcpc"), 346}; 347 348static int mt6360_check_vendor_info(struct mt6360_ddata *ddata) 349{ 350 u32 info; 351 int ret; 352 353 ret = regmap_read(ddata->regmap, MT6360_PMU_DEV_INFO, &info); 354 if (ret < 0) 355 return ret; 356 357 if ((info & CHIP_VEN_MASK) != CHIP_VEN_MT6360) { 358 dev_err(ddata->dev, "Device not supported\n"); 359 return -ENODEV; 360 } 361 362 ddata->chip_rev = info & CHIP_REV_MASK; 363 364 return 0; 365} 366 367static const unsigned short mt6360_slave_addr[MT6360_SLAVE_MAX] = { 368 MT6360_TCPC_SLAVEID, 369 MT6360_PMIC_SLAVEID, 370 MT6360_LDO_SLAVEID, 371 MT6360_PMU_SLAVEID, 372}; 373 374static int mt6360_xlate_pmicldo_addr(u8 *addr, int rw_size) 375{ 376 /* Address is already in encoded [5:0] */ 377 *addr &= MT6360_ADDRESS_MASK; 378 379 switch (rw_size) { 380 case 1: 381 *addr |= MT6360_DATA_SIZE_1_BYTE; 382 break; 383 case 2: 384 *addr |= MT6360_DATA_SIZE_2_BYTES; 385 break; 386 case 3: 387 *addr |= MT6360_DATA_SIZE_3_BYTES; 388 break; 389 case 4: 390 *addr |= MT6360_DATA_SIZE_4_BYTES; 391 break; 392 default: 393 return -EINVAL; 394 } 395 396 return 0; 397} 398 399static int mt6360_regmap_read(void *context, const void *reg, size_t reg_size, 400 void *val, size_t val_size) 401{ 402 struct mt6360_ddata *ddata = context; 403 u8 bank = *(u8 *)reg; 404 u8 reg_addr = *(u8 *)(reg + 1); 405 struct i2c_client *i2c; 406 bool crc_needed = false; 407 u8 *buf; 408 int buf_len = MT6360_ALLOC_READ_SIZE(val_size); 409 int read_size = val_size; 410 u8 crc; 411 int ret; 412 413 if (bank >= MT6360_SLAVE_MAX) 414 return -EINVAL; 415 416 i2c = ddata->i2c[bank]; 417 418 if (bank == MT6360_SLAVE_PMIC || bank == MT6360_SLAVE_LDO) { 419 crc_needed = true; 420 ret = mt6360_xlate_pmicldo_addr(®_addr, val_size); 421 if (ret < 0) 422 return ret; 423 read_size += MT6360_CRC_CRC8_SIZE; 424 } 425 426 buf = kzalloc(buf_len, GFP_KERNEL); 427 if (!buf) 428 return -ENOMEM; 429 430 buf[0] = I2C_ADDR_XLATE_8BIT(i2c->addr, I2C_SMBUS_READ); 431 buf[1] = reg_addr; 432 433 ret = i2c_smbus_read_i2c_block_data(i2c, reg_addr, read_size, 434 buf + MT6360_CRC_PREDATA_OFFSET); 435 if (ret < 0) 436 goto out; 437 else if (ret != read_size) { 438 ret = -EIO; 439 goto out; 440 } 441 442 if (crc_needed) { 443 crc = crc8(ddata->crc8_tbl, buf, val_size + MT6360_CRC_PREDATA_OFFSET, 0); 444 if (crc != buf[val_size + MT6360_CRC_PREDATA_OFFSET]) { 445 ret = -EIO; 446 goto out; 447 } 448 } 449 450 memcpy(val, buf + MT6360_CRC_PREDATA_OFFSET, val_size); 451out: 452 kfree(buf); 453 return (ret < 0) ? ret : 0; 454} 455 456static int mt6360_regmap_write(void *context, const void *val, size_t val_size) 457{ 458 struct mt6360_ddata *ddata = context; 459 u8 bank = *(u8 *)val; 460 u8 reg_addr = *(u8 *)(val + 1); 461 struct i2c_client *i2c; 462 bool crc_needed = false; 463 u8 *buf; 464 int buf_len = MT6360_ALLOC_WRITE_SIZE(val_size); 465 int write_size = val_size - MT6360_REGMAP_REG_BYTE_SIZE; 466 int ret; 467 468 if (bank >= MT6360_SLAVE_MAX) 469 return -EINVAL; 470 471 i2c = ddata->i2c[bank]; 472 473 if (bank == MT6360_SLAVE_PMIC || bank == MT6360_SLAVE_LDO) { 474 crc_needed = true; 475 ret = mt6360_xlate_pmicldo_addr(®_addr, val_size - MT6360_REGMAP_REG_BYTE_SIZE); 476 if (ret < 0) 477 return ret; 478 } 479 480 buf = kzalloc(buf_len, GFP_KERNEL); 481 if (!buf) 482 return -ENOMEM; 483 484 buf[0] = I2C_ADDR_XLATE_8BIT(i2c->addr, I2C_SMBUS_WRITE); 485 buf[1] = reg_addr; 486 memcpy(buf + MT6360_CRC_PREDATA_OFFSET, val + MT6360_REGMAP_REG_BYTE_SIZE, write_size); 487 488 if (crc_needed) { 489 buf[val_size] = crc8(ddata->crc8_tbl, buf, val_size, 0); 490 write_size += (MT6360_CRC_CRC8_SIZE + MT6360_CRC_DUMMY_BYTE_SIZE); 491 } 492 493 ret = i2c_smbus_write_i2c_block_data(i2c, reg_addr, write_size, 494 buf + MT6360_CRC_PREDATA_OFFSET); 495 496 kfree(buf); 497 return ret; 498} 499 500static const struct regmap_bus mt6360_regmap_bus = { 501 .read = mt6360_regmap_read, 502 .write = mt6360_regmap_write, 503 504 /* Due to PMIC and LDO CRC access size limit */ 505 .max_raw_read = 4, 506 .max_raw_write = 4, 507}; 508 509static bool mt6360_is_readwrite_reg(struct device *dev, unsigned int reg) 510{ 511 switch (reg) { 512 case MT6360_REG_TCPCSTART ... MT6360_REG_TCPCEND: 513 fallthrough; 514 case MT6360_REG_PMICSTART ... MT6360_REG_PMICEND: 515 fallthrough; 516 case MT6360_REG_LDOSTART ... MT6360_REG_LDOEND: 517 fallthrough; 518 case MT6360_REG_PMUSTART ... MT6360_REG_PMUEND: 519 return true; 520 } 521 522 return false; 523} 524 525static const struct regmap_config mt6360_regmap_config = { 526 .reg_bits = 16, 527 .val_bits = 8, 528 .reg_format_endian = REGMAP_ENDIAN_BIG, 529 .max_register = MT6360_REG_PMUEND, 530 .writeable_reg = mt6360_is_readwrite_reg, 531 .readable_reg = mt6360_is_readwrite_reg, 532}; 533 534static int mt6360_probe(struct i2c_client *client) 535{ 536 struct mt6360_ddata *ddata; 537 int i, ret; 538 539 ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL); 540 if (!ddata) 541 return -ENOMEM; 542 543 ddata->dev = &client->dev; 544 i2c_set_clientdata(client, ddata); 545 546 for (i = 0; i < MT6360_SLAVE_MAX - 1; i++) { 547 ddata->i2c[i] = devm_i2c_new_dummy_device(&client->dev, 548 client->adapter, 549 mt6360_slave_addr[i]); 550 if (IS_ERR(ddata->i2c[i])) { 551 dev_err(&client->dev, 552 "Failed to get new dummy I2C device for address 0x%x", 553 mt6360_slave_addr[i]); 554 return PTR_ERR(ddata->i2c[i]); 555 } 556 } 557 ddata->i2c[MT6360_SLAVE_MAX - 1] = client; 558 559 crc8_populate_msb(ddata->crc8_tbl, MT6360_CRC8_POLYNOMIAL); 560 ddata->regmap = devm_regmap_init(ddata->dev, &mt6360_regmap_bus, ddata, 561 &mt6360_regmap_config); 562 if (IS_ERR(ddata->regmap)) { 563 dev_err(&client->dev, "Failed to register regmap\n"); 564 return PTR_ERR(ddata->regmap); 565 } 566 567 ret = mt6360_check_vendor_info(ddata); 568 if (ret) 569 return ret; 570 571 ret = devm_regmap_add_irq_chip(&client->dev, ddata->regmap, client->irq, 572 0, 0, &mt6360_irq_chip, 573 &ddata->irq_data); 574 if (ret) { 575 dev_err(&client->dev, "Failed to add Regmap IRQ Chip\n"); 576 return ret; 577 } 578 579 ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_AUTO, 580 mt6360_devs, ARRAY_SIZE(mt6360_devs), NULL, 581 0, regmap_irq_get_domain(ddata->irq_data)); 582 if (ret) { 583 dev_err(&client->dev, 584 "Failed to register subordinate devices\n"); 585 return ret; 586 } 587 588 return 0; 589} 590 591static int __maybe_unused mt6360_suspend(struct device *dev) 592{ 593 struct i2c_client *i2c = to_i2c_client(dev); 594 595 if (device_may_wakeup(dev)) 596 enable_irq_wake(i2c->irq); 597 598 return 0; 599} 600 601static int __maybe_unused mt6360_resume(struct device *dev) 602{ 603 604 struct i2c_client *i2c = to_i2c_client(dev); 605 606 if (device_may_wakeup(dev)) 607 disable_irq_wake(i2c->irq); 608 609 return 0; 610} 611 612static SIMPLE_DEV_PM_OPS(mt6360_pm_ops, mt6360_suspend, mt6360_resume); 613 614static const struct of_device_id __maybe_unused mt6360_of_id[] = { 615 { .compatible = "mediatek,mt6360", }, 616 {}, 617}; 618MODULE_DEVICE_TABLE(of, mt6360_of_id); 619 620static struct i2c_driver mt6360_driver = { 621 .driver = { 622 .name = "mt6360", 623 .pm = &mt6360_pm_ops, 624 .of_match_table = of_match_ptr(mt6360_of_id), 625 }, 626 .probe = mt6360_probe, 627}; 628module_i2c_driver(mt6360_driver); 629 630MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>"); 631MODULE_DESCRIPTION("MT6360 I2C Driver"); 632MODULE_LICENSE("GPL v2"); 633