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
mt6360_check_vendor_info(struct mt6360_ddata * ddata)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
mt6360_xlate_pmicldo_addr(u8 * addr,int rw_size)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
mt6360_regmap_read(void * context,const void * reg,size_t reg_size,void * val,size_t val_size)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;
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);
451 out:
452 kfree(buf);
453 return (ret < 0) ? ret : 0;
454 }
455
mt6360_regmap_write(void * context,const void * val,size_t val_size)456 static 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
500 static 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
mt6360_is_readwrite_reg(struct device * dev,unsigned int reg)509 static 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
525 static 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
mt6360_probe(struct i2c_client * client)534 static 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
mt6360_suspend(struct device * dev)591 static 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
mt6360_resume(struct device * dev)601 static 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
612 static SIMPLE_DEV_PM_OPS(mt6360_pm_ops, mt6360_suspend, mt6360_resume);
613
614 static const struct of_device_id __maybe_unused mt6360_of_id[] = {
615 { .compatible = "mediatek,mt6360", },
616 {},
617 };
618 MODULE_DEVICE_TABLE(of, mt6360_of_id);
619
620 static 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 };
628 module_i2c_driver(mt6360_driver);
629
630 MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
631 MODULE_DESCRIPTION("MT6360 I2C Driver");
632 MODULE_LICENSE("GPL v2");
633