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