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8#include <linux/acpi.h>
9#include <linux/delay.h>
10#include <linux/err.h>
11#include <linux/interrupt.h>
12#include <linux/kernel.h>
13#include <linux/mfd/core.h>
14#include <linux/mfd/intel_soc_pmic.h>
15#include <linux/mfd/intel_soc_pmic_bxtwc.h>
16#include <linux/module.h>
17
18#include <asm/intel_pmc_ipc.h>
19
20
21#define REG_ADDR_MASK 0xFF00
22#define REG_ADDR_SHIFT 8
23#define REG_OFFSET_MASK 0xFF
24
25
26#define BXTWC_IRQLVL1 0x4E02
27
28#define BXTWC_PWRBTNIRQ 0x4E03
29#define BXTWC_THRM0IRQ 0x4E04
30#define BXTWC_THRM1IRQ 0x4E05
31#define BXTWC_THRM2IRQ 0x4E06
32#define BXTWC_BCUIRQ 0x4E07
33#define BXTWC_ADCIRQ 0x4E08
34#define BXTWC_CHGR0IRQ 0x4E09
35#define BXTWC_CHGR1IRQ 0x4E0A
36#define BXTWC_GPIOIRQ0 0x4E0B
37#define BXTWC_GPIOIRQ1 0x4E0C
38#define BXTWC_CRITIRQ 0x4E0D
39#define BXTWC_TMUIRQ 0x4FB6
40
41
42#define BXTWC_MIRQLVL1 0x4E0E
43#define BXTWC_MIRQLVL1_MCHGR BIT(5)
44
45#define BXTWC_MPWRBTNIRQ 0x4E0F
46#define BXTWC_MTHRM0IRQ 0x4E12
47#define BXTWC_MTHRM1IRQ 0x4E13
48#define BXTWC_MTHRM2IRQ 0x4E14
49#define BXTWC_MBCUIRQ 0x4E15
50#define BXTWC_MADCIRQ 0x4E16
51#define BXTWC_MCHGR0IRQ 0x4E17
52#define BXTWC_MCHGR1IRQ 0x4E18
53#define BXTWC_MGPIO0IRQ 0x4E19
54#define BXTWC_MGPIO1IRQ 0x4E1A
55#define BXTWC_MCRITIRQ 0x4E1B
56#define BXTWC_MTMUIRQ 0x4FB7
57
58
59#define BROXTON_PMIC_WC_HRV 4
60
61enum bxtwc_irqs {
62 BXTWC_PWRBTN_LVL1_IRQ = 0,
63 BXTWC_TMU_LVL1_IRQ,
64 BXTWC_THRM_LVL1_IRQ,
65 BXTWC_BCU_LVL1_IRQ,
66 BXTWC_ADC_LVL1_IRQ,
67 BXTWC_CHGR_LVL1_IRQ,
68 BXTWC_GPIO_LVL1_IRQ,
69 BXTWC_CRIT_LVL1_IRQ,
70};
71
72enum bxtwc_irqs_pwrbtn {
73 BXTWC_PWRBTN_IRQ = 0,
74 BXTWC_UIBTN_IRQ,
75};
76
77enum bxtwc_irqs_bcu {
78 BXTWC_BCU_IRQ = 0,
79};
80
81enum bxtwc_irqs_adc {
82 BXTWC_ADC_IRQ = 0,
83};
84
85enum bxtwc_irqs_chgr {
86 BXTWC_USBC_IRQ = 0,
87 BXTWC_CHGR0_IRQ,
88 BXTWC_CHGR1_IRQ,
89};
90
91enum bxtwc_irqs_tmu {
92 BXTWC_TMU_IRQ = 0,
93};
94
95enum bxtwc_irqs_crit {
96 BXTWC_CRIT_IRQ = 0,
97};
98
99static const struct regmap_irq bxtwc_regmap_irqs[] = {
100 REGMAP_IRQ_REG(BXTWC_PWRBTN_LVL1_IRQ, 0, BIT(0)),
101 REGMAP_IRQ_REG(BXTWC_TMU_LVL1_IRQ, 0, BIT(1)),
102 REGMAP_IRQ_REG(BXTWC_THRM_LVL1_IRQ, 0, BIT(2)),
103 REGMAP_IRQ_REG(BXTWC_BCU_LVL1_IRQ, 0, BIT(3)),
104 REGMAP_IRQ_REG(BXTWC_ADC_LVL1_IRQ, 0, BIT(4)),
105 REGMAP_IRQ_REG(BXTWC_CHGR_LVL1_IRQ, 0, BIT(5)),
106 REGMAP_IRQ_REG(BXTWC_GPIO_LVL1_IRQ, 0, BIT(6)),
107 REGMAP_IRQ_REG(BXTWC_CRIT_LVL1_IRQ, 0, BIT(7)),
108};
109
110static const struct regmap_irq bxtwc_regmap_irqs_pwrbtn[] = {
111 REGMAP_IRQ_REG(BXTWC_PWRBTN_IRQ, 0, 0x01),
112};
113
114static const struct regmap_irq bxtwc_regmap_irqs_bcu[] = {
115 REGMAP_IRQ_REG(BXTWC_BCU_IRQ, 0, 0x1f),
116};
117
118static const struct regmap_irq bxtwc_regmap_irqs_adc[] = {
119 REGMAP_IRQ_REG(BXTWC_ADC_IRQ, 0, 0xff),
120};
121
122static const struct regmap_irq bxtwc_regmap_irqs_chgr[] = {
123 REGMAP_IRQ_REG(BXTWC_USBC_IRQ, 0, 0x20),
124 REGMAP_IRQ_REG(BXTWC_CHGR0_IRQ, 0, 0x1f),
125 REGMAP_IRQ_REG(BXTWC_CHGR1_IRQ, 1, 0x1f),
126};
127
128static const struct regmap_irq bxtwc_regmap_irqs_tmu[] = {
129 REGMAP_IRQ_REG(BXTWC_TMU_IRQ, 0, 0x06),
130};
131
132static const struct regmap_irq bxtwc_regmap_irqs_crit[] = {
133 REGMAP_IRQ_REG(BXTWC_CRIT_IRQ, 0, 0x03),
134};
135
136static struct regmap_irq_chip bxtwc_regmap_irq_chip = {
137 .name = "bxtwc_irq_chip",
138 .status_base = BXTWC_IRQLVL1,
139 .mask_base = BXTWC_MIRQLVL1,
140 .irqs = bxtwc_regmap_irqs,
141 .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs),
142 .num_regs = 1,
143};
144
145static struct regmap_irq_chip bxtwc_regmap_irq_chip_pwrbtn = {
146 .name = "bxtwc_irq_chip_pwrbtn",
147 .status_base = BXTWC_PWRBTNIRQ,
148 .mask_base = BXTWC_MPWRBTNIRQ,
149 .irqs = bxtwc_regmap_irqs_pwrbtn,
150 .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_pwrbtn),
151 .num_regs = 1,
152};
153
154static struct regmap_irq_chip bxtwc_regmap_irq_chip_tmu = {
155 .name = "bxtwc_irq_chip_tmu",
156 .status_base = BXTWC_TMUIRQ,
157 .mask_base = BXTWC_MTMUIRQ,
158 .irqs = bxtwc_regmap_irqs_tmu,
159 .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_tmu),
160 .num_regs = 1,
161};
162
163static struct regmap_irq_chip bxtwc_regmap_irq_chip_bcu = {
164 .name = "bxtwc_irq_chip_bcu",
165 .status_base = BXTWC_BCUIRQ,
166 .mask_base = BXTWC_MBCUIRQ,
167 .irqs = bxtwc_regmap_irqs_bcu,
168 .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_bcu),
169 .num_regs = 1,
170};
171
172static struct regmap_irq_chip bxtwc_regmap_irq_chip_adc = {
173 .name = "bxtwc_irq_chip_adc",
174 .status_base = BXTWC_ADCIRQ,
175 .mask_base = BXTWC_MADCIRQ,
176 .irqs = bxtwc_regmap_irqs_adc,
177 .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_adc),
178 .num_regs = 1,
179};
180
181static struct regmap_irq_chip bxtwc_regmap_irq_chip_chgr = {
182 .name = "bxtwc_irq_chip_chgr",
183 .status_base = BXTWC_CHGR0IRQ,
184 .mask_base = BXTWC_MCHGR0IRQ,
185 .irqs = bxtwc_regmap_irqs_chgr,
186 .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_chgr),
187 .num_regs = 2,
188};
189
190static struct regmap_irq_chip bxtwc_regmap_irq_chip_crit = {
191 .name = "bxtwc_irq_chip_crit",
192 .status_base = BXTWC_CRITIRQ,
193 .mask_base = BXTWC_MCRITIRQ,
194 .irqs = bxtwc_regmap_irqs_crit,
195 .num_irqs = ARRAY_SIZE(bxtwc_regmap_irqs_crit),
196 .num_regs = 1,
197};
198
199static struct resource gpio_resources[] = {
200 DEFINE_RES_IRQ_NAMED(BXTWC_GPIO_LVL1_IRQ, "GPIO"),
201};
202
203static struct resource adc_resources[] = {
204 DEFINE_RES_IRQ_NAMED(BXTWC_ADC_IRQ, "ADC"),
205};
206
207static struct resource usbc_resources[] = {
208 DEFINE_RES_IRQ(BXTWC_USBC_IRQ),
209};
210
211static struct resource charger_resources[] = {
212 DEFINE_RES_IRQ_NAMED(BXTWC_CHGR0_IRQ, "CHARGER"),
213 DEFINE_RES_IRQ_NAMED(BXTWC_CHGR1_IRQ, "CHARGER1"),
214};
215
216static struct resource thermal_resources[] = {
217 DEFINE_RES_IRQ(BXTWC_THRM_LVL1_IRQ),
218};
219
220static struct resource bcu_resources[] = {
221 DEFINE_RES_IRQ_NAMED(BXTWC_BCU_IRQ, "BCU"),
222};
223
224static struct resource tmu_resources[] = {
225 DEFINE_RES_IRQ_NAMED(BXTWC_TMU_IRQ, "TMU"),
226};
227
228static struct mfd_cell bxt_wc_dev[] = {
229 {
230 .name = "bxt_wcove_gpadc",
231 .num_resources = ARRAY_SIZE(adc_resources),
232 .resources = adc_resources,
233 },
234 {
235 .name = "bxt_wcove_thermal",
236 .num_resources = ARRAY_SIZE(thermal_resources),
237 .resources = thermal_resources,
238 },
239 {
240 .name = "bxt_wcove_usbc",
241 .num_resources = ARRAY_SIZE(usbc_resources),
242 .resources = usbc_resources,
243 },
244 {
245 .name = "bxt_wcove_ext_charger",
246 .num_resources = ARRAY_SIZE(charger_resources),
247 .resources = charger_resources,
248 },
249 {
250 .name = "bxt_wcove_bcu",
251 .num_resources = ARRAY_SIZE(bcu_resources),
252 .resources = bcu_resources,
253 },
254 {
255 .name = "bxt_wcove_tmu",
256 .num_resources = ARRAY_SIZE(tmu_resources),
257 .resources = tmu_resources,
258 },
259
260 {
261 .name = "bxt_wcove_gpio",
262 .num_resources = ARRAY_SIZE(gpio_resources),
263 .resources = gpio_resources,
264 },
265 {
266 .name = "bxt_wcove_region",
267 },
268};
269
270static int regmap_ipc_byte_reg_read(void *context, unsigned int reg,
271 unsigned int *val)
272{
273 int ret;
274 int i2c_addr;
275 u8 ipc_in[2];
276 u8 ipc_out[4];
277 struct intel_soc_pmic *pmic = context;
278
279 if (!pmic)
280 return -EINVAL;
281
282 if (reg & REG_ADDR_MASK)
283 i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
284 else
285 i2c_addr = BXTWC_DEVICE1_ADDR;
286
287 reg &= REG_OFFSET_MASK;
288
289 ipc_in[0] = reg;
290 ipc_in[1] = i2c_addr;
291 ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
292 PMC_IPC_PMIC_ACCESS_READ,
293 ipc_in, sizeof(ipc_in), (u32 *)ipc_out, 1);
294 if (ret) {
295 dev_err(pmic->dev, "Failed to read from PMIC\n");
296 return ret;
297 }
298 *val = ipc_out[0];
299
300 return 0;
301}
302
303static int regmap_ipc_byte_reg_write(void *context, unsigned int reg,
304 unsigned int val)
305{
306 int ret;
307 int i2c_addr;
308 u8 ipc_in[3];
309 struct intel_soc_pmic *pmic = context;
310
311 if (!pmic)
312 return -EINVAL;
313
314 if (reg & REG_ADDR_MASK)
315 i2c_addr = (reg & REG_ADDR_MASK) >> REG_ADDR_SHIFT;
316 else
317 i2c_addr = BXTWC_DEVICE1_ADDR;
318
319 reg &= REG_OFFSET_MASK;
320
321 ipc_in[0] = reg;
322 ipc_in[1] = i2c_addr;
323 ipc_in[2] = val;
324 ret = intel_pmc_ipc_command(PMC_IPC_PMIC_ACCESS,
325 PMC_IPC_PMIC_ACCESS_WRITE,
326 ipc_in, sizeof(ipc_in), NULL, 0);
327 if (ret) {
328 dev_err(pmic->dev, "Failed to write to PMIC\n");
329 return ret;
330 }
331
332 return 0;
333}
334
335
336static unsigned long bxtwc_reg_addr;
337static ssize_t bxtwc_reg_show(struct device *dev,
338 struct device_attribute *attr, char *buf)
339{
340 return sprintf(buf, "0x%lx\n", bxtwc_reg_addr);
341}
342
343static ssize_t bxtwc_reg_store(struct device *dev,
344 struct device_attribute *attr, const char *buf, size_t count)
345{
346 if (kstrtoul(buf, 0, &bxtwc_reg_addr)) {
347 dev_err(dev, "Invalid register address\n");
348 return -EINVAL;
349 }
350 return (ssize_t)count;
351}
352
353static ssize_t bxtwc_val_show(struct device *dev,
354 struct device_attribute *attr, char *buf)
355{
356 int ret;
357 unsigned int val;
358 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
359
360 ret = regmap_read(pmic->regmap, bxtwc_reg_addr, &val);
361 if (ret < 0) {
362 dev_err(dev, "Failed to read 0x%lx\n", bxtwc_reg_addr);
363 return -EIO;
364 }
365
366 return sprintf(buf, "0x%02x\n", val);
367}
368
369static ssize_t bxtwc_val_store(struct device *dev,
370 struct device_attribute *attr, const char *buf, size_t count)
371{
372 int ret;
373 unsigned int val;
374 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
375
376 ret = kstrtouint(buf, 0, &val);
377 if (ret)
378 return ret;
379
380 ret = regmap_write(pmic->regmap, bxtwc_reg_addr, val);
381 if (ret) {
382 dev_err(dev, "Failed to write value 0x%02x to address 0x%lx",
383 val, bxtwc_reg_addr);
384 return -EIO;
385 }
386 return count;
387}
388
389static DEVICE_ATTR(addr, S_IWUSR | S_IRUSR, bxtwc_reg_show, bxtwc_reg_store);
390static DEVICE_ATTR(val, S_IWUSR | S_IRUSR, bxtwc_val_show, bxtwc_val_store);
391static struct attribute *bxtwc_attrs[] = {
392 &dev_attr_addr.attr,
393 &dev_attr_val.attr,
394 NULL
395};
396
397static const struct attribute_group bxtwc_group = {
398 .attrs = bxtwc_attrs,
399};
400
401static const struct regmap_config bxtwc_regmap_config = {
402 .reg_bits = 16,
403 .val_bits = 8,
404 .reg_write = regmap_ipc_byte_reg_write,
405 .reg_read = regmap_ipc_byte_reg_read,
406};
407
408static int bxtwc_add_chained_irq_chip(struct intel_soc_pmic *pmic,
409 struct regmap_irq_chip_data *pdata,
410 int pirq, int irq_flags,
411 const struct regmap_irq_chip *chip,
412 struct regmap_irq_chip_data **data)
413{
414 int irq;
415
416 irq = regmap_irq_get_virq(pdata, pirq);
417 if (irq < 0) {
418 dev_err(pmic->dev,
419 "Failed to get parent vIRQ(%d) for chip %s, ret:%d\n",
420 pirq, chip->name, irq);
421 return irq;
422 }
423
424 return devm_regmap_add_irq_chip(pmic->dev, pmic->regmap, irq, irq_flags,
425 0, chip, data);
426}
427
428static int bxtwc_probe(struct platform_device *pdev)
429{
430 int ret;
431 acpi_handle handle;
432 acpi_status status;
433 unsigned long long hrv;
434 struct intel_soc_pmic *pmic;
435
436 handle = ACPI_HANDLE(&pdev->dev);
437 status = acpi_evaluate_integer(handle, "_HRV", NULL, &hrv);
438 if (ACPI_FAILURE(status)) {
439 dev_err(&pdev->dev, "Failed to get PMIC hardware revision\n");
440 return -ENODEV;
441 }
442 if (hrv != BROXTON_PMIC_WC_HRV) {
443 dev_err(&pdev->dev, "Invalid PMIC hardware revision: %llu\n",
444 hrv);
445 return -ENODEV;
446 }
447
448 pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
449 if (!pmic)
450 return -ENOMEM;
451
452 ret = platform_get_irq(pdev, 0);
453 if (ret < 0) {
454 dev_err(&pdev->dev, "Invalid IRQ\n");
455 return ret;
456 }
457 pmic->irq = ret;
458
459 dev_set_drvdata(&pdev->dev, pmic);
460 pmic->dev = &pdev->dev;
461
462 pmic->regmap = devm_regmap_init(&pdev->dev, NULL, pmic,
463 &bxtwc_regmap_config);
464 if (IS_ERR(pmic->regmap)) {
465 ret = PTR_ERR(pmic->regmap);
466 dev_err(&pdev->dev, "Failed to initialise regmap: %d\n", ret);
467 return ret;
468 }
469
470 ret = devm_regmap_add_irq_chip(&pdev->dev, pmic->regmap, pmic->irq,
471 IRQF_ONESHOT | IRQF_SHARED,
472 0, &bxtwc_regmap_irq_chip,
473 &pmic->irq_chip_data);
474 if (ret) {
475 dev_err(&pdev->dev, "Failed to add IRQ chip\n");
476 return ret;
477 }
478
479 ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
480 BXTWC_PWRBTN_LVL1_IRQ,
481 IRQF_ONESHOT,
482 &bxtwc_regmap_irq_chip_pwrbtn,
483 &pmic->irq_chip_data_pwrbtn);
484 if (ret) {
485 dev_err(&pdev->dev, "Failed to add PWRBTN IRQ chip\n");
486 return ret;
487 }
488
489 ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
490 BXTWC_TMU_LVL1_IRQ,
491 IRQF_ONESHOT,
492 &bxtwc_regmap_irq_chip_tmu,
493 &pmic->irq_chip_data_tmu);
494 if (ret) {
495 dev_err(&pdev->dev, "Failed to add TMU IRQ chip\n");
496 return ret;
497 }
498
499
500 ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
501 BXTWC_BCU_LVL1_IRQ,
502 IRQF_ONESHOT,
503 &bxtwc_regmap_irq_chip_bcu,
504 &pmic->irq_chip_data_bcu);
505
506
507 if (ret) {
508 dev_err(&pdev->dev, "Failed to add BUC IRQ chip\n");
509 return ret;
510 }
511
512
513 ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
514 BXTWC_ADC_LVL1_IRQ,
515 IRQF_ONESHOT,
516 &bxtwc_regmap_irq_chip_adc,
517 &pmic->irq_chip_data_adc);
518
519
520 if (ret) {
521 dev_err(&pdev->dev, "Failed to add ADC IRQ chip\n");
522 return ret;
523 }
524
525
526 ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
527 BXTWC_CHGR_LVL1_IRQ,
528 IRQF_ONESHOT,
529 &bxtwc_regmap_irq_chip_chgr,
530 &pmic->irq_chip_data_chgr);
531
532
533 if (ret) {
534 dev_err(&pdev->dev, "Failed to add CHGR IRQ chip\n");
535 return ret;
536 }
537
538
539 ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
540 BXTWC_CRIT_LVL1_IRQ,
541 IRQF_ONESHOT,
542 &bxtwc_regmap_irq_chip_crit,
543 &pmic->irq_chip_data_crit);
544
545
546 if (ret) {
547 dev_err(&pdev->dev, "Failed to add CRIT IRQ chip\n");
548 return ret;
549 }
550
551 ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, bxt_wc_dev,
552 ARRAY_SIZE(bxt_wc_dev), NULL, 0, NULL);
553 if (ret) {
554 dev_err(&pdev->dev, "Failed to add devices\n");
555 return ret;
556 }
557
558 ret = sysfs_create_group(&pdev->dev.kobj, &bxtwc_group);
559 if (ret) {
560 dev_err(&pdev->dev, "Failed to create sysfs group %d\n", ret);
561 return ret;
562 }
563
564
565
566
567
568
569
570
571 regmap_update_bits(pmic->regmap, BXTWC_MIRQLVL1,
572 BXTWC_MIRQLVL1_MCHGR, 0);
573
574 return 0;
575}
576
577static int bxtwc_remove(struct platform_device *pdev)
578{
579 sysfs_remove_group(&pdev->dev.kobj, &bxtwc_group);
580
581 return 0;
582}
583
584static void bxtwc_shutdown(struct platform_device *pdev)
585{
586 struct intel_soc_pmic *pmic = dev_get_drvdata(&pdev->dev);
587
588 disable_irq(pmic->irq);
589}
590
591#ifdef CONFIG_PM_SLEEP
592static int bxtwc_suspend(struct device *dev)
593{
594 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
595
596 disable_irq(pmic->irq);
597
598 return 0;
599}
600
601static int bxtwc_resume(struct device *dev)
602{
603 struct intel_soc_pmic *pmic = dev_get_drvdata(dev);
604
605 enable_irq(pmic->irq);
606 return 0;
607}
608#endif
609static SIMPLE_DEV_PM_OPS(bxtwc_pm_ops, bxtwc_suspend, bxtwc_resume);
610
611static const struct acpi_device_id bxtwc_acpi_ids[] = {
612 { "INT34D3", },
613 { }
614};
615MODULE_DEVICE_TABLE(acpi, bxtwc_acpi_ids);
616
617static struct platform_driver bxtwc_driver = {
618 .probe = bxtwc_probe,
619 .remove = bxtwc_remove,
620 .shutdown = bxtwc_shutdown,
621 .driver = {
622 .name = "BXTWC PMIC",
623 .pm = &bxtwc_pm_ops,
624 .acpi_match_table = ACPI_PTR(bxtwc_acpi_ids),
625 },
626};
627
628module_platform_driver(bxtwc_driver);
629
630MODULE_LICENSE("GPL v2");
631MODULE_AUTHOR("Qipeng Zha<qipeng.zha@intel.com>");
632
