1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * MFD core driver for Rockchip RK808/RK818
4 *
5 * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd
6 *
7 * Author: Chris Zhong <zyw@rock-chips.com>
8 * Author: Zhang Qing <zhangqing@rock-chips.com>
9 *
10 * Copyright (C) 2016 PHYTEC Messtechnik GmbH
11 *
12 * Author: Wadim Egorov <w.egorov@phytec.de>
13 */
14
15 #include <linux/i2c.h>
16 #include <linux/interrupt.h>
17 #include <linux/mfd/rk808.h>
18 #include <linux/mfd/core.h>
19 #include <linux/module.h>
20 #include <linux/of_device.h>
21 #include <linux/regmap.h>
22
23 struct rk808_reg_data {
24 int addr;
25 int mask;
26 int value;
27 };
28
rk808_is_volatile_reg(struct device * dev,unsigned int reg)29 static bool rk808_is_volatile_reg(struct device *dev, unsigned int reg)
30 {
31 /*
32 * Notes:
33 * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
34 * we don't use that feature. It's better to cache.
35 * - It's unlikely we care that RK808_DEVCTRL_REG is volatile since
36 * bits are cleared in case when we shutoff anyway, but better safe.
37 */
38
39 switch (reg) {
40 case RK808_SECONDS_REG ... RK808_WEEKS_REG:
41 case RK808_RTC_STATUS_REG:
42 case RK808_VB_MON_REG:
43 case RK808_THERMAL_REG:
44 case RK808_DCDC_UV_STS_REG:
45 case RK808_LDO_UV_STS_REG:
46 case RK808_DCDC_PG_REG:
47 case RK808_LDO_PG_REG:
48 case RK808_DEVCTRL_REG:
49 case RK808_INT_STS_REG1:
50 case RK808_INT_STS_REG2:
51 return true;
52 }
53
54 return false;
55 }
56
rk817_is_volatile_reg(struct device * dev,unsigned int reg)57 static bool rk817_is_volatile_reg(struct device *dev, unsigned int reg)
58 {
59 /*
60 * Notes:
61 * - Technically the ROUND_30s bit makes RTC_CTRL_REG volatile, but
62 * we don't use that feature. It's better to cache.
63 */
64
65 switch (reg) {
66 case RK817_SECONDS_REG ... RK817_WEEKS_REG:
67 case RK817_RTC_STATUS_REG:
68 case RK817_CODEC_DTOP_LPT_SRST:
69 case RK817_INT_STS_REG0:
70 case RK817_INT_STS_REG1:
71 case RK817_INT_STS_REG2:
72 case RK817_SYS_STS:
73 return true;
74 }
75
76 return true;
77 }
78
79 static const struct regmap_config rk818_regmap_config = {
80 .reg_bits = 8,
81 .val_bits = 8,
82 .max_register = RK818_USB_CTRL_REG,
83 .cache_type = REGCACHE_RBTREE,
84 .volatile_reg = rk808_is_volatile_reg,
85 };
86
87 static const struct regmap_config rk805_regmap_config = {
88 .reg_bits = 8,
89 .val_bits = 8,
90 .max_register = RK805_OFF_SOURCE_REG,
91 .cache_type = REGCACHE_RBTREE,
92 .volatile_reg = rk808_is_volatile_reg,
93 };
94
95 static const struct regmap_config rk808_regmap_config = {
96 .reg_bits = 8,
97 .val_bits = 8,
98 .max_register = RK808_IO_POL_REG,
99 .cache_type = REGCACHE_RBTREE,
100 .volatile_reg = rk808_is_volatile_reg,
101 };
102
103 static const struct regmap_config rk817_regmap_config = {
104 .reg_bits = 8,
105 .val_bits = 8,
106 .max_register = RK817_GPIO_INT_CFG,
107 .cache_type = REGCACHE_NONE,
108 .volatile_reg = rk817_is_volatile_reg,
109 };
110
111 static const struct resource rtc_resources[] = {
112 DEFINE_RES_IRQ(RK808_IRQ_RTC_ALARM),
113 };
114
115 static const struct resource rk817_rtc_resources[] = {
116 DEFINE_RES_IRQ(RK817_IRQ_RTC_ALARM),
117 };
118
119 static const struct resource rk805_key_resources[] = {
120 DEFINE_RES_IRQ(RK805_IRQ_PWRON_RISE),
121 DEFINE_RES_IRQ(RK805_IRQ_PWRON_FALL),
122 };
123
124 static const struct resource rk817_pwrkey_resources[] = {
125 DEFINE_RES_IRQ(RK817_IRQ_PWRON_RISE),
126 DEFINE_RES_IRQ(RK817_IRQ_PWRON_FALL),
127 };
128
129 static const struct mfd_cell rk805s[] = {
130 { .name = "rk808-clkout", },
131 { .name = "rk808-regulator", },
132 { .name = "rk805-pinctrl", },
133 {
134 .name = "rk808-rtc",
135 .num_resources = ARRAY_SIZE(rtc_resources),
136 .resources = &rtc_resources[0],
137 },
138 { .name = "rk805-pwrkey",
139 .num_resources = ARRAY_SIZE(rk805_key_resources),
140 .resources = &rk805_key_resources[0],
141 },
142 };
143
144 static const struct mfd_cell rk808s[] = {
145 { .name = "rk808-clkout", },
146 { .name = "rk808-regulator", },
147 {
148 .name = "rk808-rtc",
149 .num_resources = ARRAY_SIZE(rtc_resources),
150 .resources = rtc_resources,
151 },
152 };
153
154 static const struct mfd_cell rk817s[] = {
155 { .name = "rk808-clkout",},
156 { .name = "rk808-regulator",},
157 {
158 .name = "rk805-pwrkey",
159 .num_resources = ARRAY_SIZE(rk817_pwrkey_resources),
160 .resources = &rk817_pwrkey_resources[0],
161 },
162 {
163 .name = "rk808-rtc",
164 .num_resources = ARRAY_SIZE(rk817_rtc_resources),
165 .resources = &rk817_rtc_resources[0],
166 },
167 { .name = "rk817-codec",},
168 };
169
170 static const struct mfd_cell rk818s[] = {
171 { .name = "rk808-clkout", },
172 { .name = "rk808-regulator", },
173 {
174 .name = "rk808-rtc",
175 .num_resources = ARRAY_SIZE(rtc_resources),
176 .resources = rtc_resources,
177 },
178 };
179
180 static const struct rk808_reg_data rk805_pre_init_reg[] = {
181 {RK805_BUCK1_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
182 RK805_BUCK1_2_ILMAX_4000MA},
183 {RK805_BUCK2_CONFIG_REG, RK805_BUCK1_2_ILMAX_MASK,
184 RK805_BUCK1_2_ILMAX_4000MA},
185 {RK805_BUCK3_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
186 RK805_BUCK3_ILMAX_3000MA},
187 {RK805_BUCK4_CONFIG_REG, RK805_BUCK3_4_ILMAX_MASK,
188 RK805_BUCK4_ILMAX_3500MA},
189 {RK805_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_400MA},
190 {RK805_THERMAL_REG, TEMP_HOTDIE_MSK, TEMP115C},
191 };
192
193 static const struct rk808_reg_data rk808_pre_init_reg[] = {
194 { RK808_BUCK3_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_150MA },
195 { RK808_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_200MA },
196 { RK808_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
197 { RK808_BUCK1_CONFIG_REG, BUCK1_RATE_MASK, BUCK_ILMIN_200MA },
198 { RK808_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_200MA },
199 { RK808_DCDC_UV_ACT_REG, BUCK_UV_ACT_MASK, BUCK_UV_ACT_DISABLE},
200 { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT |
201 VB_LO_SEL_3500MV },
202 };
203
204 static const struct rk808_reg_data rk817_pre_init_reg[] = {
205 {RK817_RTC_CTRL_REG, RTC_STOP, RTC_STOP},
206 /* Codec specific registers */
207 { RK817_CODEC_DTOP_VUCTL, MASK_ALL, 0x03 },
208 { RK817_CODEC_DTOP_VUCTIME, MASK_ALL, 0x00 },
209 { RK817_CODEC_DTOP_LPT_SRST, MASK_ALL, 0x00 },
210 { RK817_CODEC_DTOP_DIGEN_CLKE, MASK_ALL, 0x00 },
211 /* from vendor driver, CODEC_AREF_RTCFG0 not defined in data sheet */
212 { RK817_CODEC_AREF_RTCFG0, MASK_ALL, 0x00 },
213 { RK817_CODEC_AREF_RTCFG1, MASK_ALL, 0x06 },
214 { RK817_CODEC_AADC_CFG0, MASK_ALL, 0xc8 },
215 /* from vendor driver, CODEC_AADC_CFG1 not defined in data sheet */
216 { RK817_CODEC_AADC_CFG1, MASK_ALL, 0x00 },
217 { RK817_CODEC_DADC_VOLL, MASK_ALL, 0x00 },
218 { RK817_CODEC_DADC_VOLR, MASK_ALL, 0x00 },
219 { RK817_CODEC_DADC_SR_ACL0, MASK_ALL, 0x00 },
220 { RK817_CODEC_DADC_ALC1, MASK_ALL, 0x00 },
221 { RK817_CODEC_DADC_ALC2, MASK_ALL, 0x00 },
222 { RK817_CODEC_DADC_NG, MASK_ALL, 0x00 },
223 { RK817_CODEC_DADC_HPF, MASK_ALL, 0x00 },
224 { RK817_CODEC_DADC_RVOLL, MASK_ALL, 0xff },
225 { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
226 { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
227 { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
228 { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
229 { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
230 { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
231 { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
232 { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
233 /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
234 { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
235 { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
236 { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
237 { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
238 { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
239 { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
240 { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
241 { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
242 { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
243 { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
244 { RK817_CODEC_DADC_RVOLR, MASK_ALL, 0xff },
245 { RK817_CODEC_AMIC_CFG0, MASK_ALL, 0x70 },
246 { RK817_CODEC_AMIC_CFG1, MASK_ALL, 0x00 },
247 { RK817_CODEC_DMIC_PGA_GAIN, MASK_ALL, 0x66 },
248 { RK817_CODEC_DMIC_LMT1, MASK_ALL, 0x00 },
249 { RK817_CODEC_DMIC_LMT2, MASK_ALL, 0x00 },
250 { RK817_CODEC_DMIC_NG1, MASK_ALL, 0x00 },
251 { RK817_CODEC_DMIC_NG2, MASK_ALL, 0x00 },
252 /* from vendor driver, CODEC_ADAC_CFG0 not defined in data sheet */
253 { RK817_CODEC_ADAC_CFG0, MASK_ALL, 0x00 },
254 { RK817_CODEC_ADAC_CFG1, MASK_ALL, 0x07 },
255 { RK817_CODEC_DDAC_POPD_DACST, MASK_ALL, 0x82 },
256 { RK817_CODEC_DDAC_VOLL, MASK_ALL, 0x00 },
257 { RK817_CODEC_DDAC_VOLR, MASK_ALL, 0x00 },
258 { RK817_CODEC_DDAC_SR_LMT0, MASK_ALL, 0x00 },
259 { RK817_CODEC_DDAC_LMT1, MASK_ALL, 0x00 },
260 { RK817_CODEC_DDAC_LMT2, MASK_ALL, 0x00 },
261 { RK817_CODEC_DDAC_MUTE_MIXCTL, MASK_ALL, 0xa0 },
262 { RK817_CODEC_DDAC_RVOLL, MASK_ALL, 0xff },
263 { RK817_CODEC_DDAC_RVOLR, MASK_ALL, 0xff },
264 { RK817_CODEC_AHP_ANTI0, MASK_ALL, 0x00 },
265 { RK817_CODEC_AHP_ANTI1, MASK_ALL, 0x00 },
266 { RK817_CODEC_AHP_CFG0, MASK_ALL, 0xe0 },
267 { RK817_CODEC_AHP_CFG1, MASK_ALL, 0x1f },
268 { RK817_CODEC_AHP_CP, MASK_ALL, 0x09 },
269 { RK817_CODEC_ACLASSD_CFG1, MASK_ALL, 0x69 },
270 { RK817_CODEC_ACLASSD_CFG2, MASK_ALL, 0x44 },
271 { RK817_CODEC_APLL_CFG0, MASK_ALL, 0x04 },
272 { RK817_CODEC_APLL_CFG1, MASK_ALL, 0x00 },
273 { RK817_CODEC_APLL_CFG2, MASK_ALL, 0x30 },
274 { RK817_CODEC_APLL_CFG3, MASK_ALL, 0x19 },
275 { RK817_CODEC_APLL_CFG4, MASK_ALL, 0x65 },
276 { RK817_CODEC_APLL_CFG5, MASK_ALL, 0x01 },
277 { RK817_CODEC_DI2S_CKM, MASK_ALL, 0x01 },
278 { RK817_CODEC_DI2S_RSD, MASK_ALL, 0x00 },
279 { RK817_CODEC_DI2S_RXCR1, MASK_ALL, 0x00 },
280 { RK817_CODEC_DI2S_RXCR2, MASK_ALL, 0x17 },
281 { RK817_CODEC_DI2S_RXCMD_TSD, MASK_ALL, 0x00 },
282 { RK817_CODEC_DI2S_TXCR1, MASK_ALL, 0x00 },
283 { RK817_CODEC_DI2S_TXCR2, MASK_ALL, 0x17 },
284 { RK817_CODEC_DI2S_TXCR3_TXCMD, MASK_ALL, 0x00 },
285 {RK817_GPIO_INT_CFG, RK817_INT_POL_MSK, RK817_INT_POL_L},
286 {RK817_SYS_CFG(1), RK817_HOTDIE_TEMP_MSK | RK817_TSD_TEMP_MSK,
287 RK817_HOTDIE_105 | RK817_TSD_140},
288 };
289
290 static const struct rk808_reg_data rk818_pre_init_reg[] = {
291 /* improve efficiency */
292 { RK818_BUCK2_CONFIG_REG, BUCK2_RATE_MASK, BUCK_ILMIN_250MA },
293 { RK818_BUCK4_CONFIG_REG, BUCK_ILMIN_MASK, BUCK_ILMIN_250MA },
294 { RK818_BOOST_CONFIG_REG, BOOST_ILMIN_MASK, BOOST_ILMIN_100MA },
295 { RK818_USB_CTRL_REG, RK818_USB_ILIM_SEL_MASK,
296 RK818_USB_ILMIN_2000MA },
297 /* close charger when usb lower then 3.4V */
298 { RK818_USB_CTRL_REG, RK818_USB_CHG_SD_VSEL_MASK,
299 (0x7 << 4) },
300 /* no action when vref */
301 { RK818_H5V_EN_REG, BIT(1), RK818_REF_RDY_CTRL },
302 /* enable HDMI 5V */
303 { RK818_H5V_EN_REG, BIT(0), RK818_H5V_EN },
304 { RK808_VB_MON_REG, MASK_ALL, VB_LO_ACT |
305 VB_LO_SEL_3500MV },
306 };
307
308 static const struct regmap_irq rk805_irqs[] = {
309 [RK805_IRQ_PWRON_RISE] = {
310 .mask = RK805_IRQ_PWRON_RISE_MSK,
311 .reg_offset = 0,
312 },
313 [RK805_IRQ_VB_LOW] = {
314 .mask = RK805_IRQ_VB_LOW_MSK,
315 .reg_offset = 0,
316 },
317 [RK805_IRQ_PWRON] = {
318 .mask = RK805_IRQ_PWRON_MSK,
319 .reg_offset = 0,
320 },
321 [RK805_IRQ_PWRON_LP] = {
322 .mask = RK805_IRQ_PWRON_LP_MSK,
323 .reg_offset = 0,
324 },
325 [RK805_IRQ_HOTDIE] = {
326 .mask = RK805_IRQ_HOTDIE_MSK,
327 .reg_offset = 0,
328 },
329 [RK805_IRQ_RTC_ALARM] = {
330 .mask = RK805_IRQ_RTC_ALARM_MSK,
331 .reg_offset = 0,
332 },
333 [RK805_IRQ_RTC_PERIOD] = {
334 .mask = RK805_IRQ_RTC_PERIOD_MSK,
335 .reg_offset = 0,
336 },
337 [RK805_IRQ_PWRON_FALL] = {
338 .mask = RK805_IRQ_PWRON_FALL_MSK,
339 .reg_offset = 0,
340 },
341 };
342
343 static const struct regmap_irq rk808_irqs[] = {
344 /* INT_STS */
345 [RK808_IRQ_VOUT_LO] = {
346 .mask = RK808_IRQ_VOUT_LO_MSK,
347 .reg_offset = 0,
348 },
349 [RK808_IRQ_VB_LO] = {
350 .mask = RK808_IRQ_VB_LO_MSK,
351 .reg_offset = 0,
352 },
353 [RK808_IRQ_PWRON] = {
354 .mask = RK808_IRQ_PWRON_MSK,
355 .reg_offset = 0,
356 },
357 [RK808_IRQ_PWRON_LP] = {
358 .mask = RK808_IRQ_PWRON_LP_MSK,
359 .reg_offset = 0,
360 },
361 [RK808_IRQ_HOTDIE] = {
362 .mask = RK808_IRQ_HOTDIE_MSK,
363 .reg_offset = 0,
364 },
365 [RK808_IRQ_RTC_ALARM] = {
366 .mask = RK808_IRQ_RTC_ALARM_MSK,
367 .reg_offset = 0,
368 },
369 [RK808_IRQ_RTC_PERIOD] = {
370 .mask = RK808_IRQ_RTC_PERIOD_MSK,
371 .reg_offset = 0,
372 },
373
374 /* INT_STS2 */
375 [RK808_IRQ_PLUG_IN_INT] = {
376 .mask = RK808_IRQ_PLUG_IN_INT_MSK,
377 .reg_offset = 1,
378 },
379 [RK808_IRQ_PLUG_OUT_INT] = {
380 .mask = RK808_IRQ_PLUG_OUT_INT_MSK,
381 .reg_offset = 1,
382 },
383 };
384
385 static const struct regmap_irq rk818_irqs[] = {
386 /* INT_STS */
387 [RK818_IRQ_VOUT_LO] = {
388 .mask = RK818_IRQ_VOUT_LO_MSK,
389 .reg_offset = 0,
390 },
391 [RK818_IRQ_VB_LO] = {
392 .mask = RK818_IRQ_VB_LO_MSK,
393 .reg_offset = 0,
394 },
395 [RK818_IRQ_PWRON] = {
396 .mask = RK818_IRQ_PWRON_MSK,
397 .reg_offset = 0,
398 },
399 [RK818_IRQ_PWRON_LP] = {
400 .mask = RK818_IRQ_PWRON_LP_MSK,
401 .reg_offset = 0,
402 },
403 [RK818_IRQ_HOTDIE] = {
404 .mask = RK818_IRQ_HOTDIE_MSK,
405 .reg_offset = 0,
406 },
407 [RK818_IRQ_RTC_ALARM] = {
408 .mask = RK818_IRQ_RTC_ALARM_MSK,
409 .reg_offset = 0,
410 },
411 [RK818_IRQ_RTC_PERIOD] = {
412 .mask = RK818_IRQ_RTC_PERIOD_MSK,
413 .reg_offset = 0,
414 },
415 [RK818_IRQ_USB_OV] = {
416 .mask = RK818_IRQ_USB_OV_MSK,
417 .reg_offset = 0,
418 },
419
420 /* INT_STS2 */
421 [RK818_IRQ_PLUG_IN] = {
422 .mask = RK818_IRQ_PLUG_IN_MSK,
423 .reg_offset = 1,
424 },
425 [RK818_IRQ_PLUG_OUT] = {
426 .mask = RK818_IRQ_PLUG_OUT_MSK,
427 .reg_offset = 1,
428 },
429 [RK818_IRQ_CHG_OK] = {
430 .mask = RK818_IRQ_CHG_OK_MSK,
431 .reg_offset = 1,
432 },
433 [RK818_IRQ_CHG_TE] = {
434 .mask = RK818_IRQ_CHG_TE_MSK,
435 .reg_offset = 1,
436 },
437 [RK818_IRQ_CHG_TS1] = {
438 .mask = RK818_IRQ_CHG_TS1_MSK,
439 .reg_offset = 1,
440 },
441 [RK818_IRQ_TS2] = {
442 .mask = RK818_IRQ_TS2_MSK,
443 .reg_offset = 1,
444 },
445 [RK818_IRQ_CHG_CVTLIM] = {
446 .mask = RK818_IRQ_CHG_CVTLIM_MSK,
447 .reg_offset = 1,
448 },
449 [RK818_IRQ_DISCHG_ILIM] = {
450 .mask = RK818_IRQ_DISCHG_ILIM_MSK,
451 .reg_offset = 1,
452 },
453 };
454
455 static const struct regmap_irq rk817_irqs[RK817_IRQ_END] = {
456 REGMAP_IRQ_REG_LINE(0, 8),
457 REGMAP_IRQ_REG_LINE(1, 8),
458 REGMAP_IRQ_REG_LINE(2, 8),
459 REGMAP_IRQ_REG_LINE(3, 8),
460 REGMAP_IRQ_REG_LINE(4, 8),
461 REGMAP_IRQ_REG_LINE(5, 8),
462 REGMAP_IRQ_REG_LINE(6, 8),
463 REGMAP_IRQ_REG_LINE(7, 8),
464 REGMAP_IRQ_REG_LINE(8, 8),
465 REGMAP_IRQ_REG_LINE(9, 8),
466 REGMAP_IRQ_REG_LINE(10, 8),
467 REGMAP_IRQ_REG_LINE(11, 8),
468 REGMAP_IRQ_REG_LINE(12, 8),
469 REGMAP_IRQ_REG_LINE(13, 8),
470 REGMAP_IRQ_REG_LINE(14, 8),
471 REGMAP_IRQ_REG_LINE(15, 8),
472 REGMAP_IRQ_REG_LINE(16, 8),
473 REGMAP_IRQ_REG_LINE(17, 8),
474 REGMAP_IRQ_REG_LINE(18, 8),
475 REGMAP_IRQ_REG_LINE(19, 8),
476 REGMAP_IRQ_REG_LINE(20, 8),
477 REGMAP_IRQ_REG_LINE(21, 8),
478 REGMAP_IRQ_REG_LINE(22, 8),
479 REGMAP_IRQ_REG_LINE(23, 8)
480 };
481
482 static struct regmap_irq_chip rk805_irq_chip = {
483 .name = "rk805",
484 .irqs = rk805_irqs,
485 .num_irqs = ARRAY_SIZE(rk805_irqs),
486 .num_regs = 1,
487 .status_base = RK805_INT_STS_REG,
488 .mask_base = RK805_INT_STS_MSK_REG,
489 .ack_base = RK805_INT_STS_REG,
490 .init_ack_masked = true,
491 };
492
493 static const struct regmap_irq_chip rk808_irq_chip = {
494 .name = "rk808",
495 .irqs = rk808_irqs,
496 .num_irqs = ARRAY_SIZE(rk808_irqs),
497 .num_regs = 2,
498 .irq_reg_stride = 2,
499 .status_base = RK808_INT_STS_REG1,
500 .mask_base = RK808_INT_STS_MSK_REG1,
501 .ack_base = RK808_INT_STS_REG1,
502 .init_ack_masked = true,
503 };
504
505 static struct regmap_irq_chip rk817_irq_chip = {
506 .name = "rk817",
507 .irqs = rk817_irqs,
508 .num_irqs = ARRAY_SIZE(rk817_irqs),
509 .num_regs = 3,
510 .irq_reg_stride = 2,
511 .status_base = RK817_INT_STS_REG0,
512 .mask_base = RK817_INT_STS_MSK_REG0,
513 .ack_base = RK817_INT_STS_REG0,
514 .init_ack_masked = true,
515 };
516
517 static const struct regmap_irq_chip rk818_irq_chip = {
518 .name = "rk818",
519 .irqs = rk818_irqs,
520 .num_irqs = ARRAY_SIZE(rk818_irqs),
521 .num_regs = 2,
522 .irq_reg_stride = 2,
523 .status_base = RK818_INT_STS_REG1,
524 .mask_base = RK818_INT_STS_MSK_REG1,
525 .ack_base = RK818_INT_STS_REG1,
526 .init_ack_masked = true,
527 };
528
529 static struct i2c_client *rk808_i2c_client;
530
rk808_pm_power_off(void)531 static void rk808_pm_power_off(void)
532 {
533 int ret;
534 unsigned int reg, bit;
535 struct rk808 *rk808 = i2c_get_clientdata(rk808_i2c_client);
536
537 switch (rk808->variant) {
538 case RK805_ID:
539 reg = RK805_DEV_CTRL_REG;
540 bit = DEV_OFF;
541 break;
542 case RK808_ID:
543 reg = RK808_DEVCTRL_REG,
544 bit = DEV_OFF_RST;
545 break;
546 case RK818_ID:
547 reg = RK818_DEVCTRL_REG;
548 bit = DEV_OFF;
549 break;
550 default:
551 return;
552 }
553 ret = regmap_update_bits(rk808->regmap, reg, bit, bit);
554 if (ret)
555 dev_err(&rk808_i2c_client->dev, "Failed to shutdown device!\n");
556 }
557
rk8xx_shutdown(struct i2c_client * client)558 static void rk8xx_shutdown(struct i2c_client *client)
559 {
560 struct rk808 *rk808 = i2c_get_clientdata(client);
561 int ret;
562
563 switch (rk808->variant) {
564 case RK805_ID:
565 ret = regmap_update_bits(rk808->regmap,
566 RK805_GPIO_IO_POL_REG,
567 SLP_SD_MSK,
568 SHUTDOWN_FUN);
569 break;
570 case RK809_ID:
571 case RK817_ID:
572 ret = regmap_update_bits(rk808->regmap,
573 RK817_SYS_CFG(3),
574 RK817_SLPPIN_FUNC_MSK,
575 SLPPIN_DN_FUN);
576 break;
577 default:
578 return;
579 }
580 if (ret)
581 dev_warn(&client->dev,
582 "Cannot switch to power down function\n");
583 }
584
585 static const struct of_device_id rk808_of_match[] = {
586 { .compatible = "rockchip,rk805" },
587 { .compatible = "rockchip,rk808" },
588 { .compatible = "rockchip,rk809" },
589 { .compatible = "rockchip,rk817" },
590 { .compatible = "rockchip,rk818" },
591 { },
592 };
593 MODULE_DEVICE_TABLE(of, rk808_of_match);
594
rk808_probe(struct i2c_client * client,const struct i2c_device_id * id)595 static int rk808_probe(struct i2c_client *client,
596 const struct i2c_device_id *id)
597 {
598 struct device_node *np = client->dev.of_node;
599 struct rk808 *rk808;
600 const struct rk808_reg_data *pre_init_reg;
601 const struct mfd_cell *cells;
602 int nr_pre_init_regs;
603 int nr_cells;
604 int msb, lsb;
605 unsigned char pmic_id_msb, pmic_id_lsb;
606 int ret;
607 int i;
608
609 rk808 = devm_kzalloc(&client->dev, sizeof(*rk808), GFP_KERNEL);
610 if (!rk808)
611 return -ENOMEM;
612
613 if (of_device_is_compatible(np, "rockchip,rk817") ||
614 of_device_is_compatible(np, "rockchip,rk809")) {
615 pmic_id_msb = RK817_ID_MSB;
616 pmic_id_lsb = RK817_ID_LSB;
617 } else {
618 pmic_id_msb = RK808_ID_MSB;
619 pmic_id_lsb = RK808_ID_LSB;
620 }
621
622 /* Read chip variant */
623 msb = i2c_smbus_read_byte_data(client, pmic_id_msb);
624 if (msb < 0) {
625 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
626 RK808_ID_MSB);
627 return msb;
628 }
629
630 lsb = i2c_smbus_read_byte_data(client, pmic_id_lsb);
631 if (lsb < 0) {
632 dev_err(&client->dev, "failed to read the chip id at 0x%x\n",
633 RK808_ID_LSB);
634 return lsb;
635 }
636
637 rk808->variant = ((msb << 8) | lsb) & RK8XX_ID_MSK;
638 dev_info(&client->dev, "chip id: 0x%x\n", (unsigned int)rk808->variant);
639
640 switch (rk808->variant) {
641 case RK805_ID:
642 rk808->regmap_cfg = &rk805_regmap_config;
643 rk808->regmap_irq_chip = &rk805_irq_chip;
644 pre_init_reg = rk805_pre_init_reg;
645 nr_pre_init_regs = ARRAY_SIZE(rk805_pre_init_reg);
646 cells = rk805s;
647 nr_cells = ARRAY_SIZE(rk805s);
648 break;
649 case RK808_ID:
650 rk808->regmap_cfg = &rk808_regmap_config;
651 rk808->regmap_irq_chip = &rk808_irq_chip;
652 pre_init_reg = rk808_pre_init_reg;
653 nr_pre_init_regs = ARRAY_SIZE(rk808_pre_init_reg);
654 cells = rk808s;
655 nr_cells = ARRAY_SIZE(rk808s);
656 break;
657 case RK818_ID:
658 rk808->regmap_cfg = &rk818_regmap_config;
659 rk808->regmap_irq_chip = &rk818_irq_chip;
660 pre_init_reg = rk818_pre_init_reg;
661 nr_pre_init_regs = ARRAY_SIZE(rk818_pre_init_reg);
662 cells = rk818s;
663 nr_cells = ARRAY_SIZE(rk818s);
664 break;
665 case RK809_ID:
666 case RK817_ID:
667 rk808->regmap_cfg = &rk817_regmap_config;
668 rk808->regmap_irq_chip = &rk817_irq_chip;
669 pre_init_reg = rk817_pre_init_reg;
670 nr_pre_init_regs = ARRAY_SIZE(rk817_pre_init_reg);
671 cells = rk817s;
672 nr_cells = ARRAY_SIZE(rk817s);
673 break;
674 default:
675 dev_err(&client->dev, "Unsupported RK8XX ID %lu\n",
676 rk808->variant);
677 return -EINVAL;
678 }
679
680 rk808->i2c = client;
681 i2c_set_clientdata(client, rk808);
682
683 rk808->regmap = devm_regmap_init_i2c(client, rk808->regmap_cfg);
684 if (IS_ERR(rk808->regmap)) {
685 dev_err(&client->dev, "regmap initialization failed\n");
686 return PTR_ERR(rk808->regmap);
687 }
688
689 if (!client->irq) {
690 dev_err(&client->dev, "No interrupt support, no core IRQ\n");
691 return -EINVAL;
692 }
693
694 ret = regmap_add_irq_chip(rk808->regmap, client->irq,
695 IRQF_ONESHOT, -1,
696 rk808->regmap_irq_chip, &rk808->irq_data);
697 if (ret) {
698 dev_err(&client->dev, "Failed to add irq_chip %d\n", ret);
699 return ret;
700 }
701
702 for (i = 0; i < nr_pre_init_regs; i++) {
703 ret = regmap_update_bits(rk808->regmap,
704 pre_init_reg[i].addr,
705 pre_init_reg[i].mask,
706 pre_init_reg[i].value);
707 if (ret) {
708 dev_err(&client->dev,
709 "0x%x write err\n",
710 pre_init_reg[i].addr);
711 return ret;
712 }
713 }
714
715 ret = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
716 cells, nr_cells, NULL, 0,
717 regmap_irq_get_domain(rk808->irq_data));
718 if (ret) {
719 dev_err(&client->dev, "failed to add MFD devices %d\n", ret);
720 goto err_irq;
721 }
722
723 if (of_property_read_bool(np, "rockchip,system-power-controller")) {
724 rk808_i2c_client = client;
725 pm_power_off = rk808_pm_power_off;
726 }
727
728 return 0;
729
730 err_irq:
731 regmap_del_irq_chip(client->irq, rk808->irq_data);
732 return ret;
733 }
734
rk808_remove(struct i2c_client * client)735 static int rk808_remove(struct i2c_client *client)
736 {
737 struct rk808 *rk808 = i2c_get_clientdata(client);
738
739 regmap_del_irq_chip(client->irq, rk808->irq_data);
740
741 /**
742 * pm_power_off may points to a function from another module.
743 * Check if the pointer is set by us and only then overwrite it.
744 */
745 if (pm_power_off == rk808_pm_power_off)
746 pm_power_off = NULL;
747
748 return 0;
749 }
750
rk8xx_suspend(struct device * dev)751 static int __maybe_unused rk8xx_suspend(struct device *dev)
752 {
753 struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
754 int ret = 0;
755
756 switch (rk808->variant) {
757 case RK805_ID:
758 ret = regmap_update_bits(rk808->regmap,
759 RK805_GPIO_IO_POL_REG,
760 SLP_SD_MSK,
761 SLEEP_FUN);
762 break;
763 case RK809_ID:
764 case RK817_ID:
765 ret = regmap_update_bits(rk808->regmap,
766 RK817_SYS_CFG(3),
767 RK817_SLPPIN_FUNC_MSK,
768 SLPPIN_SLP_FUN);
769 break;
770 default:
771 break;
772 }
773
774 return ret;
775 }
776
rk8xx_resume(struct device * dev)777 static int __maybe_unused rk8xx_resume(struct device *dev)
778 {
779 struct rk808 *rk808 = i2c_get_clientdata(to_i2c_client(dev));
780 int ret = 0;
781
782 switch (rk808->variant) {
783 case RK809_ID:
784 case RK817_ID:
785 ret = regmap_update_bits(rk808->regmap,
786 RK817_SYS_CFG(3),
787 RK817_SLPPIN_FUNC_MSK,
788 SLPPIN_NULL_FUN);
789 break;
790 default:
791 break;
792 }
793
794 return ret;
795 }
796 static SIMPLE_DEV_PM_OPS(rk8xx_pm_ops, rk8xx_suspend, rk8xx_resume);
797
798 static struct i2c_driver rk808_i2c_driver = {
799 .driver = {
800 .name = "rk808",
801 .of_match_table = rk808_of_match,
802 .pm = &rk8xx_pm_ops,
803 },
804 .probe = rk808_probe,
805 .remove = rk808_remove,
806 .shutdown = rk8xx_shutdown,
807 };
808
809 module_i2c_driver(rk808_i2c_driver);
810
811 MODULE_LICENSE("GPL");
812 MODULE_AUTHOR("Chris Zhong <zyw@rock-chips.com>");
813 MODULE_AUTHOR("Zhang Qing <zhangqing@rock-chips.com>");
814 MODULE_AUTHOR("Wadim Egorov <w.egorov@phytec.de>");
815 MODULE_DESCRIPTION("RK808/RK818 PMIC driver");
816
