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 18 enum { 19 MT6360_SLAVE_TCPC = 0, 20 MT6360_SLAVE_PMIC, 21 MT6360_SLAVE_LDO, 22 MT6360_SLAVE_PMU, 23 MT6360_SLAVE_MAX, 24 }; 25 26 struct 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 127 180 181 static 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 }; 269 270 static 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 }; 281 282 static const struct resource mt6360_adc_resources[] = { 283 DEFINE_RES_IRQ_NAMED(MT6360_ADC_DONEI, "adc_donei"), 284 }; 285 286 static 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 }; 303 304 static 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 }; 312 313 static 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 }; 335 336 static 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 }; 347 348 static 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 } 366 367 static 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 }; 373 374 static 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 } 398 399 static 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 = ddata->i2c[bank]; 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_PMIC || bank == MT6360_SLAVE_LDO) { 414 crc_needed = true; 415 ret = mt6360_xlate_pmicldo_addr(®_addr, val_size); 416 if (ret < 0) 417 return ret; 418 read_size += MT6360_CRC_CRC8_SIZE; 419 } 420 421 buf = kzalloc(buf_len, GFP_KERNEL); 422 if (!buf) 423 return -ENOMEM; 424 425 buf[0] = I2C_ADDR_XLATE_8BIT(i2c->addr, I2C_SMBUS_READ); 426 buf[1] = reg_addr; 427 428 ret = i2c_smbus_read_i2c_block_data(i2c, reg_addr, read_size, 429 buf + MT6360_CRC_PREDATA_OFFSET); 430 if (ret < 0) 431 goto out; 432 else if (ret != read_size) { 433 ret = -EIO; 434 goto out; 435 } 436 437 if (crc_needed) { 438 crc = crc8(ddata->crc8_tbl, buf, val_size + MT6360_CRC_PREDATA_OFFSET, 0); 439 if (crc != buf[val_size + MT6360_CRC_PREDATA_OFFSET]) { 440 ret = -EIO; 441 goto out; 442 } 443 } 444 445 memcpy(val, buf + MT6360_CRC_PREDATA_OFFSET, val_size); 446 out: 447 kfree(buf); 448 return (ret < 0) ? ret : 0; 449 } 450 451 static int mt6360_regmap_write(void *context, const void *val, size_t val_size) 452 { 453 struct mt6360_ddata *ddata = context; 454 u8 bank = *(u8 *)val; 455 u8 reg_addr = *(u8 *)(val + 1); 456 struct i2c_client *i2c = ddata->i2c[bank]; 457 bool crc_needed = false; 458 u8 *buf; 459 int buf_len = MT6360_ALLOC_WRITE_SIZE(val_size); 460 int write_size = val_size - MT6360_REGMAP_REG_BYTE_SIZE; 461 int ret; 462 463 if (bank == MT6360_SLAVE_PMIC || bank == MT6360_SLAVE_LDO) { 464 crc_needed = true; 465 ret = mt6360_xlate_pmicldo_addr(®_addr, val_size - MT6360_REGMAP_REG_BYTE_SIZE); 466 if (ret < 0) 467 return ret; 468 } 469 470 buf = kzalloc(buf_len, GFP_KERNEL); 471 if (!buf) 472 return -ENOMEM; 473 474 buf[0] = I2C_ADDR_XLATE_8BIT(i2c->addr, I2C_SMBUS_WRITE); 475 buf[1] = reg_addr; 476 memcpy(buf + MT6360_CRC_PREDATA_OFFSET, val + MT6360_REGMAP_REG_BYTE_SIZE, write_size); 477 478 if (crc_needed) { 479 buf[val_size] = crc8(ddata->crc8_tbl, buf, val_size, 0); 480 write_size += (MT6360_CRC_CRC8_SIZE + MT6360_CRC_DUMMY_BYTE_SIZE); 481 } 482 483 ret = i2c_smbus_write_i2c_block_data(i2c, reg_addr, write_size, 484 buf + MT6360_CRC_PREDATA_OFFSET); 485 486 kfree(buf); 487 return ret; 488 } 489 490 static const struct regmap_bus mt6360_regmap_bus = { 491 .read = mt6360_regmap_read, 492 .write = mt6360_regmap_write, 493 494 /* Due to PMIC and LDO CRC access size limit */ 495 .max_raw_read = 4, 496 .max_raw_write = 4, 497 }; 498 499 static bool mt6360_is_readwrite_reg(struct device *dev, unsigned int reg) 500 { 501 switch (reg) { 502 case MT6360_REG_TCPCSTART ... MT6360_REG_TCPCEND: 503 fallthrough; 504 case MT6360_REG_PMICSTART ... MT6360_REG_PMICEND: 505 fallthrough; 506 case MT6360_REG_LDOSTART ... MT6360_REG_LDOEND: 507 fallthrough; 508 case MT6360_REG_PMUSTART ... MT6360_REG_PMUEND: 509 return true; 510 } 511 512 return false; 513 } 514 515 static const struct regmap_config mt6360_regmap_config = { 516 .reg_bits = 16, 517 .val_bits = 8, 518 .reg_format_endian = REGMAP_ENDIAN_BIG, 519 .max_register = MT6360_REG_PMUEND, 520 .writeable_reg = mt6360_is_readwrite_reg, 521 .readable_reg = mt6360_is_readwrite_reg, 522 }; 523 524 static int mt6360_probe(struct i2c_client *client) 525 { 526 struct mt6360_ddata *ddata; 527 int i, ret; 528 529 ddata = devm_kzalloc(&client->dev, sizeof(*ddata), GFP_KERNEL); 530 if (!ddata) 531 return -ENOMEM; 532 533 ddata->dev = &client->dev; 534 i2c_set_clientdata(client, ddata); 535 536 for (i = 0; i < MT6360_SLAVE_MAX - 1; i++) { 537 ddata->i2c[i] = devm_i2c_new_dummy_device(&client->dev, 538 client->adapter, 539 mt6360_slave_addr[i]); 540 if (IS_ERR(ddata->i2c[i])) { 541 dev_err(&client->dev, 542 "Failed to get new dummy I2C device for address 0x%x", 543 mt6360_slave_addr[i]); 544 return PTR_ERR(ddata->i2c[i]); 545 } 546 } 547 ddata->i2c[MT6360_SLAVE_MAX - 1] = client; 548 549 crc8_populate_msb(ddata->crc8_tbl, MT6360_CRC8_POLYNOMIAL); 550 ddata->regmap = devm_regmap_init(ddata->dev, &mt6360_regmap_bus, ddata, 551 &mt6360_regmap_config); 552 if (IS_ERR(ddata->regmap)) { 553 dev_err(&client->dev, "Failed to register regmap\n"); 554 return PTR_ERR(ddata->regmap); 555 } 556 557 ret = mt6360_check_vendor_info(ddata); 558 if (ret) 559 return ret; 560 561 ret = devm_regmap_add_irq_chip(&client->dev, ddata->regmap, client->irq, 562 0, 0, &mt6360_irq_chip, 563 &ddata->irq_data); 564 if (ret) { 565 dev_err(&client->dev, "Failed to add Regmap IRQ Chip\n"); 566 return ret; 567 } 568 569 ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_AUTO, 570 mt6360_devs, ARRAY_SIZE(mt6360_devs), NULL, 571 0, regmap_irq_get_domain(ddata->irq_data)); 572 if (ret) { 573 dev_err(&client->dev, 574 "Failed to register subordinate devices\n"); 575 return ret; 576 } 577 578 return 0; 579 } 580 581 static int __maybe_unused mt6360_suspend(struct device *dev) 582 { 583 struct i2c_client *i2c = to_i2c_client(dev); 584 585 if (device_may_wakeup(dev)) 586 enable_irq_wake(i2c->irq); 587 588 return 0; 589 } 590 591 static int __maybe_unused mt6360_resume(struct device *dev) 592 { 593 594 struct i2c_client *i2c = to_i2c_client(dev); 595 596 if (device_may_wakeup(dev)) 597 disable_irq_wake(i2c->irq); 598 599 return 0; 600 } 601 602 static SIMPLE_DEV_PM_OPS(mt6360_pm_ops, mt6360_suspend, mt6360_resume); 603 604 static const struct of_device_id __maybe_unused mt6360_of_id[] = { 605 { .compatible = "mediatek,mt6360", }, 606 {}, 607 }; 608 MODULE_DEVICE_TABLE(of, mt6360_of_id); 609 610 static struct i2c_driver mt6360_driver = { 611 .driver = { 612 .name = "mt6360", 613 .pm = &mt6360_pm_ops, 614 .of_match_table = of_match_ptr(mt6360_of_id), 615 }, 616 .probe_new = mt6360_probe, 617 }; 618 module_i2c_driver(mt6360_driver); 619 620 MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>"); 621 MODULE_DESCRIPTION("MT6360 I2C Driver"); 622 MODULE_LICENSE("GPL v2"); 623