drivers/mfd/mt6360-core.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2020 MediaTek Inc.
   4  *
   5  * Author: Gene Chen <[email protected]>
   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(&reg_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(&reg_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 <[email protected]>");
 626 MODULE_DESCRIPTION("MT6360 I2C Driver");
 627 MODULE_LICENSE("GPL v2");