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1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3  *
4  * Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
30
31 /*
32  * Thermometer and thermal zones driver for RockChip SoCs.
33  * Calibration data are taken from Linux, because this part of SoC
34  * is undocumented in TRM.
35  */
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/bus.h>
40 #include <sys/gpio.h>
41 #include <sys/kernel.h>
42 #include <sys/module.h>
43 #include <sys/malloc.h>
44 #include <sys/rman.h>
45 #include <sys/sysctl.h>
46
47 #include <machine/bus.h>
48
49 #include <dev/extres/clk/clk.h>
50 #include <dev/extres/hwreset/hwreset.h>
51 #include <dev/extres/syscon/syscon.h>
52 #include <dev/ofw/ofw_bus.h>
53 #include <dev/ofw/ofw_bus_subr.h>
54
55 #include "syscon_if.h"
56 #include "rk_tsadc_if.h"
57
58 /* Global registers */
59 #define TSADC_USER_CON                          0x000
60 #define TSADC_AUTO_CON                          0x004
61 #define  TSADC_AUTO_CON_POL_HI                          (1 << 8)
62 #define  TSADC_AUTO_SRC_EN(x)                           (1 << (4 + (x)))
63 #define  TSADC_AUTO_Q_SEL                               (1 << 1) /* V3 only */
64 #define  TSADC_AUTO_CON_AUTO                            (1 << 0)
65
66 #define TSADC_INT_EN                            0x008
67 #define  TSADC_INT_EN_2CRU_EN_SRC(x)                    (1 << (8 + (x)))
68 #define  TSADC_INT_EN_2GPIO_EN_SRC(x)                   (1 << (4 + (x)))
69 #define TSADC_INT_PD                            0x00c
70 #define TSADC_DATA(x)                           (0x20 + (x) * 0x04)
71 #define TSADC_COMP_INT(x)                       (0x30 + (x) * 0x04)
72 #define  TSADC_COMP_INT_SRC_EN(x)                       (1 << (0 + (x)))
73 #define TSADC_COMP_SHUT(x)                      (0x40 + (x) * 0x04)
74 #define TSADC_HIGHT_INT_DEBOUNCE                0x060
75 #define TSADC_HIGHT_TSHUT_DEBOUNCE              0x064
76 #define TSADC_AUTO_PERIOD                       0x068
77 #define TSADC_AUTO_PERIOD_HT                    0x06c
78 #define TSADC_COMP0_LOW_INT                     0x080   /* V3 only */
79 #define TSADC_COMP1_LOW_INT                     0x084   /* V3 only */
80
81 /* GFR Bits */
82 #define GRF_SARADC_TESTBIT                      0x0e644
83 #define  GRF_SARADC_TESTBIT_ON                          (0x10001 << 2)
84 #define GRF_TSADC_TESTBIT_L                     0x0e648
85 #define  GRF_TSADC_VCM_EN_L                             (0x10001 << 7)
86 #define GRF_TSADC_TESTBIT_H                     0x0e64c
87 #define  GRF_TSADC_VCM_EN_H                             (0x10001 << 7)
88 #define  GRF_TSADC_TESTBIT_H_ON                         (0x10001 << 2)
89
90 #define WR4(_sc, _r, _v)        bus_write_4((_sc)->mem_res, (_r), (_v))
91 #define RD4(_sc, _r)            bus_read_4((_sc)->mem_res, (_r))
92
93 static struct sysctl_ctx_list tsadc_sysctl_ctx;
94
95 struct tsensor {
96         char                    *name;
97         int                     id;
98         int                     channel;
99 };
100
101 struct rk_calib_entry {
102         uint32_t        raw;
103         int             temp;
104 };
105
106 struct tsadc_calib_info {
107         struct rk_calib_entry   *table;
108         int                     nentries;
109 };
110
111 struct tsadc_conf {
112         int                     use_syscon;
113         int                     q_sel_ntc;
114         int                     shutdown_temp;
115         int                     shutdown_mode;
116         int                     shutdown_pol;
117         struct tsensor          *tsensors;
118         int                     ntsensors;
119         struct tsadc_calib_info calib_info;
120 };
121
122 struct tsadc_softc {
123         device_t                dev;
124         struct resource         *mem_res;
125         struct resource         *irq_res;
126         void                    *irq_ih;
127
128         clk_t                   tsadc_clk;
129         clk_t                   apb_pclk_clk;
130         hwreset_t               hwreset;
131         struct syscon           *grf;
132
133         struct tsadc_conf       *conf;
134
135         int                     shutdown_temp;
136         int                     shutdown_mode;
137         int                     shutdown_pol;
138
139         int                     alarm_temp;
140 };
141
142 static struct rk_calib_entry rk3288_calib_data[] = {
143         {3800, -40000},
144         {3792, -35000},
145         {3783, -30000},
146         {3774, -25000},
147         {3765, -20000},
148         {3756, -15000},
149         {3747, -10000},
150         {3737, -5000},
151         {3728, 0},
152         {3718, 5000},
153         {3708, 10000},
154         {3698, 15000},
155         {3688, 20000},
156         {3678, 25000},
157         {3667, 30000},
158         {3656, 35000},
159         {3645, 40000},
160         {3634, 45000},
161         {3623, 50000},
162         {3611, 55000},
163         {3600, 60000},
164         {3588, 65000},
165         {3575, 70000},
166         {3563, 75000},
167         {3550, 80000},
168         {3537, 85000},
169         {3524, 90000},
170         {3510, 95000},
171         {3496, 100000},
172         {3482, 105000},
173         {3467, 110000},
174         {3452, 115000},
175         {3437, 120000},
176         {3421, 125000},
177 };
178
179 struct tsensor rk3288_tsensors[] = {
180         { .channel = 0, .id = 2, .name = "reserved"},
181         { .channel = 1, .id = 0, .name = "CPU"},
182         { .channel = 2, .id = 1, .name = "GPU"},
183 };
184
185 struct tsadc_conf rk3288_tsadc_conf = {
186         .use_syscon =           0,
187         .q_sel_ntc =            0,
188         .shutdown_temp =        95000,
189         .shutdown_mode =        1, /* GPIO */
190         .shutdown_pol =         0, /* Low  */
191         .tsensors =             rk3288_tsensors,
192         .ntsensors =            nitems(rk3288_tsensors),
193         .calib_info =   {
194                         .table = rk3288_calib_data,
195                         .nentries = nitems(rk3288_calib_data),
196         }
197 };
198
199 static struct rk_calib_entry rk3328_calib_data[] = {
200         {296, -40000},
201         {304, -35000},
202         {313, -30000},
203         {331, -20000},
204         {340, -15000},
205         {349, -10000},
206         {359, -5000},
207         {368, 0},
208         {378, 5000},
209         {388, 10000},
210         {398, 15000},
211         {408, 20000},
212         {418, 25000},
213         {429, 30000},
214         {440, 35000},
215         {451, 40000},
216         {462, 45000},
217         {473, 50000},
218         {485, 55000},
219         {496, 60000},
220         {508, 65000},
221         {521, 70000},
222         {533, 75000},
223         {546, 80000},
224         {559, 85000},
225         {572, 90000},
226         {586, 95000},
227         {600, 100000},
228         {614, 105000},
229         {629, 110000},
230         {644, 115000},
231         {659, 120000},
232         {675, 125000},
233 };
234
235 static struct tsensor rk3328_tsensors[] = {
236         { .channel = 0, .id = 0, .name = "CPU"},
237 };
238
239 static struct tsadc_conf rk3328_tsadc_conf = {
240         .use_syscon =           0,
241         .q_sel_ntc =            1,
242         .shutdown_temp =        95000,
243         .shutdown_mode =        0, /* CRU */
244         .shutdown_pol =         0, /* Low  */
245         .tsensors =             rk3328_tsensors,
246         .ntsensors =            nitems(rk3328_tsensors),
247         .calib_info =   {
248                         .table = rk3328_calib_data,
249                         .nentries = nitems(rk3328_calib_data),
250         }
251 };
252
253 static struct rk_calib_entry rk3399_calib_data[] = {
254         {402, -40000},
255         {410, -35000},
256         {419, -30000},
257         {427, -25000},
258         {436, -20000},
259         {444, -15000},
260         {453, -10000},
261         {461, -5000},
262         {470, 0},
263         {478, 5000},
264         {487, 10000},
265         {496, 15000},
266         {504, 20000},
267         {513, 25000},
268         {521, 30000},
269         {530, 35000},
270         {538, 40000},
271         {547, 45000},
272         {555, 50000},
273         {564, 55000},
274         {573, 60000},
275         {581, 65000},
276         {590, 70000},
277         {599, 75000},
278         {607, 80000},
279         {616, 85000},
280         {624, 90000},
281         {633, 95000},
282         {642, 100000},
283         {650, 105000},
284         {659, 110000},
285         {668, 115000},
286         {677, 120000},
287         {685, 125000},
288 };
289
290 static struct tsensor rk3399_tsensors[] = {
291         { .channel = 0, .id = 0, .name = "CPU"},
292         { .channel = 1, .id = 1, .name = "GPU"},
293 };
294
295 static struct tsadc_conf rk3399_tsadc_conf = {
296         .use_syscon =           1,
297         .q_sel_ntc =            1,
298         .shutdown_temp =        95000,
299         .shutdown_mode =        1, /* GPIO */
300         .shutdown_pol =         0, /* Low  */
301         .tsensors =             rk3399_tsensors,
302         .ntsensors =            nitems(rk3399_tsensors),
303         .calib_info =   {
304                         .table = rk3399_calib_data,
305                         .nentries = nitems(rk3399_calib_data),
306         }
307 };
308
309 static struct ofw_compat_data compat_data[] = {
310         {"rockchip,rk3288-tsadc",       (uintptr_t)&rk3288_tsadc_conf},
311         {"rockchip,rk3328-tsadc",       (uintptr_t)&rk3328_tsadc_conf},
312         {"rockchip,rk3399-tsadc",       (uintptr_t)&rk3399_tsadc_conf},
313         {NULL,          0}
314 };
315
316 static uint32_t
317 tsadc_temp_to_raw(struct tsadc_softc *sc, int temp)
318 {
319         struct rk_calib_entry *tbl;
320         int denom, ntbl, raw, i;
321
322         tbl = sc->conf->calib_info.table;
323         ntbl = sc->conf->calib_info.nentries;
324
325         if (temp <= tbl[0].temp)
326                 return (tbl[0].raw);
327
328         if (temp >= tbl[ntbl - 1].temp)
329                 return (tbl[ntbl - 1].raw);
330
331         for (i = 1; i < (ntbl - 1); i++) {
332                 /* Exact match */
333                 if (temp == tbl[i].temp)
334                         return (tbl[i].raw);
335                 if (temp < tbl[i].temp)
336                         break;
337         }
338
339         /*
340         * Translated value is between i and i - 1 table entries.
341         * Do linear interpolation for it.
342         */
343         raw = (int)tbl[i - 1].raw - (int)tbl[i].raw;
344         raw *= temp - tbl[i - 1].temp;
345         denom = tbl[i - 1].temp - tbl[i].temp;
346         raw = tbl[i - 1].raw + raw / denom;
347         return (raw);
348 }
349
350 static int
351 tsadc_raw_to_temp(struct tsadc_softc *sc, uint32_t raw)
352 {
353         struct rk_calib_entry *tbl;
354         int denom, ntbl, temp, i;
355         bool descending;
356
357         tbl = sc->conf->calib_info.table;
358         ntbl = sc->conf->calib_info.nentries;
359         descending = tbl[0].raw > tbl[1].raw;
360
361         if (descending) {
362                 /* Raw column is in descending order. */
363                 if (raw >= tbl[0].raw)
364                         return (tbl[0].temp);
365                 if (raw <= tbl[ntbl - 1].raw)
366                         return (tbl[ntbl - 1].temp);
367
368                 for (i = ntbl - 2; i > 0; i--) {
369                         /* Exact match */
370                         if (raw == tbl[i].raw)
371                                 return (tbl[i].temp);
372                         if (raw < tbl[i].raw)
373                                 break;
374                 }
375         } else {
376                 /* Raw column is in ascending order. */
377                 if (raw <= tbl[0].raw)
378                         return (tbl[0].temp);
379                 if (raw >= tbl[ntbl - 1].raw)
380                         return (tbl[ntbl - 1].temp);
381                 for (i = 1; i < (ntbl - 1); i++) {
382                         /* Exact match */
383                         if (raw == tbl[i].raw)
384                                 return (tbl[i].temp);
385                         if (raw < tbl[i].raw)
386                                 break;
387                 }
388         }
389
390         /*
391         * Translated value is between i and i - 1 table entries.
392         * Do linear interpolation for it.
393         */
394         temp  = (int)tbl[i - 1].temp - (int)tbl[i].temp;
395         temp *= raw - tbl[i - 1].raw;
396         denom = tbl[i - 1].raw - tbl[i].raw;
397         temp = tbl[i - 1].temp + temp / denom;
398         return (temp);
399 }
400
401 static void
402 tsadc_init_tsensor(struct tsadc_softc *sc, struct tsensor *sensor)
403 {
404         uint32_t val;
405
406         /* Shutdown mode */
407         val = RD4(sc, TSADC_INT_EN);
408         if (sc->shutdown_mode != 0) {
409                 /* Signal shutdown of GPIO pin */
410                 val &= ~TSADC_INT_EN_2CRU_EN_SRC(sensor->channel);
411                 val |= TSADC_INT_EN_2GPIO_EN_SRC(sensor->channel);
412         } else {
413                 val |= TSADC_INT_EN_2CRU_EN_SRC(sensor->channel);
414                 val &= ~TSADC_INT_EN_2GPIO_EN_SRC(sensor->channel);
415         }
416         WR4(sc, TSADC_INT_EN, val);
417
418         /* Shutdown temperature */
419         val =  tsadc_raw_to_temp(sc, sc->shutdown_temp);
420         WR4(sc, TSADC_COMP_SHUT(sensor->channel), val);
421         val = RD4(sc, TSADC_AUTO_CON);
422         val |= TSADC_AUTO_SRC_EN(sensor->channel);
423         WR4(sc, TSADC_AUTO_CON, val);
424
425         /* Alarm temperature */
426         val =  tsadc_temp_to_raw(sc, sc->alarm_temp);
427         WR4(sc, TSADC_COMP_INT(sensor->channel), val);
428         val = RD4(sc, TSADC_INT_EN);
429         val |= TSADC_COMP_INT_SRC_EN(sensor->channel);
430         WR4(sc, TSADC_INT_EN, val);
431 }
432
433 static void
434 tsadc_init(struct tsadc_softc *sc)
435 {
436         uint32_t val;
437
438         /* Common part */
439         val = 0;        /* XXX Is this right? */
440         if (sc->shutdown_pol != 0)
441                 val |= TSADC_AUTO_CON_POL_HI;
442         else
443                 val &= ~TSADC_AUTO_CON_POL_HI;
444         if (sc->conf->q_sel_ntc)
445                 val |= TSADC_AUTO_Q_SEL;
446         WR4(sc, TSADC_AUTO_CON, val);
447
448         if (!sc->conf->use_syscon) {
449                 /* V2 init */
450                 WR4(sc, TSADC_AUTO_PERIOD, 250);        /* 250 ms */
451                 WR4(sc, TSADC_AUTO_PERIOD_HT, 50);      /*  50 ms */
452                 WR4(sc, TSADC_HIGHT_INT_DEBOUNCE, 4);
453                 WR4(sc, TSADC_HIGHT_TSHUT_DEBOUNCE, 4);
454         } else {
455                 /* V3 init */
456                 if (sc->grf == NULL) {
457                         /* Errata: adjust interleave to working value */
458                         WR4(sc, TSADC_USER_CON, 13 << 6);       /* 13 clks */
459                 } else {
460                         SYSCON_WRITE_4(sc->grf, GRF_TSADC_TESTBIT_L,
461                             GRF_TSADC_VCM_EN_L);
462                         SYSCON_WRITE_4(sc->grf, GRF_TSADC_TESTBIT_H,
463                             GRF_TSADC_VCM_EN_H);
464                         DELAY(30);  /* 15 usec min */
465
466                         SYSCON_WRITE_4(sc->grf, GRF_SARADC_TESTBIT,
467                             GRF_SARADC_TESTBIT_ON);
468                         SYSCON_WRITE_4(sc->grf, GRF_TSADC_TESTBIT_H,
469                             GRF_TSADC_TESTBIT_H_ON);
470                         DELAY(180);  /* 90 usec min */
471                 }
472                 WR4(sc, TSADC_AUTO_PERIOD, 1875);       /* 2.5 ms */
473                 WR4(sc, TSADC_AUTO_PERIOD_HT, 1875);    /* 2.5 ms */
474                 WR4(sc, TSADC_HIGHT_INT_DEBOUNCE, 4);
475                 WR4(sc, TSADC_HIGHT_TSHUT_DEBOUNCE, 4);
476         }
477 }
478
479 static int
480 tsadc_read_temp(struct tsadc_softc *sc, struct tsensor *sensor, int *temp)
481 {
482         uint32_t val;
483
484         val = RD4(sc, TSADC_DATA(sensor->channel));
485         *temp = tsadc_raw_to_temp(sc, val);
486
487 #ifdef DEBUG
488         printf("%s: Sensor(id: %d, ch: %d), temp: %d\n", __func__,
489             sensor->id, sensor->channel, *temp);
490         printf(" status: 0x%08X, 0x%08X\n",
491             RD4(sc, TSADC_USER_CON),
492             RD4(sc, TSADC_AUTO_CON));
493         printf(" Data: 0x%08X, 0x%08X, 0x%08X\n",
494             RD4(sc, TSADC_DATA(sensor->channel)),
495             RD4(sc, TSADC_COMP_INT(sensor->channel)),
496             RD4(sc, TSADC_COMP_SHUT(sensor->channel)));
497 #endif
498         return (0);
499 }
500
501 static int
502 tsadc_get_temp(device_t dev, device_t cdev, uintptr_t id, int *val)
503 {
504         struct tsadc_softc *sc;
505         int i, rv;
506
507         sc = device_get_softc(dev);
508
509         if (id >= sc->conf->ntsensors)
510                 return (ERANGE);
511
512         for (i = 0; i < sc->conf->ntsensors; i++) {
513                 if (sc->conf->tsensors->id == id) {
514                         rv =tsadc_read_temp(sc, sc->conf->tsensors + id, val);
515                         return (rv);
516                 }
517         }
518         return (ERANGE);
519 }
520
521 static int
522 tsadc_sysctl_temperature(SYSCTL_HANDLER_ARGS)
523 {
524         struct tsadc_softc *sc;
525         int val;
526         int rv;
527         int id;
528
529         /* Write request */
530         if (req->newptr != NULL)
531                 return (EINVAL);
532
533         sc = arg1;
534         id = arg2;
535
536         if (id >= sc->conf->ntsensors)
537                 return (ERANGE);
538         rv =  tsadc_read_temp(sc, sc->conf->tsensors + id, &val);
539         if (rv != 0)
540                 return (rv);
541
542         val = val / 100;
543         val +=  2731;
544         rv = sysctl_handle_int(oidp, &val, 0, req);
545         return (rv);
546 }
547
548 static int
549 tsadc_init_sysctl(struct tsadc_softc *sc)
550 {
551         int i;
552         struct sysctl_oid *oid, *tmp;
553
554         sysctl_ctx_init(&tsadc_sysctl_ctx);
555         /* create node for hw.temp */
556         oid = SYSCTL_ADD_NODE(&tsadc_sysctl_ctx,
557             SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, "temperature",
558             CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, "");
559         if (oid == NULL)
560                 return (ENXIO);
561
562         /* Add sensors */
563         for (i = sc->conf->ntsensors  - 1; i >= 0; i--) {
564                 tmp = SYSCTL_ADD_PROC(&tsadc_sysctl_ctx,
565                     SYSCTL_CHILDREN(oid), OID_AUTO, sc->conf->tsensors[i].name,
566                     CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_NEEDGIANT, sc, i,
567                     tsadc_sysctl_temperature, "IK", "SoC Temperature");
568                 if (tmp == NULL)
569                         return (ENXIO);
570         }
571
572         return (0);
573 }
574
575 static int
576 tsadc_intr(void *arg)
577 {
578         struct tsadc_softc *sc;
579         uint32_t val;
580
581         sc = (struct tsadc_softc *)arg;
582
583         val = RD4(sc, TSADC_INT_PD);
584         WR4(sc, TSADC_INT_PD, val);
585
586         /* XXX Handle shutdown and alarm interrupts. */
587         if (val & 0x00F0) {
588                 device_printf(sc->dev, "Alarm: device temperature "
589                     "is above of shutdown level.\n");
590         } else if (val & 0x000F) {
591                 device_printf(sc->dev, "Alarm: device temperature "
592                     "is above of alarm level.\n");
593         }
594         return (FILTER_HANDLED);
595 }
596
597 static int
598 tsadc_probe(device_t dev)
599 {
600
601         if (!ofw_bus_status_okay(dev))
602                 return (ENXIO);
603
604         if (ofw_bus_search_compatible(dev, compat_data)->ocd_data == 0)
605                 return (ENXIO);
606
607         device_set_desc(dev, "RockChip temperature sensors");
608         return (BUS_PROBE_DEFAULT);
609 }
610
611 static int
612 tsadc_attach(device_t dev)
613 {
614         struct tsadc_softc *sc;
615         phandle_t node;
616         uint32_t val;
617         int i, rid, rv;
618
619         sc = device_get_softc(dev);
620         sc->dev = dev;
621         node = ofw_bus_get_node(sc->dev);
622         sc->conf = (struct tsadc_conf *)
623             ofw_bus_search_compatible(dev, compat_data)->ocd_data;
624         sc->alarm_temp = 90000;
625
626         rid = 0;
627         sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
628             RF_ACTIVE);
629         if (sc->mem_res == NULL) {
630                 device_printf(dev, "Cannot allocate memory resources\n");
631                 goto fail;
632         }
633
634         rid = 0;
635         sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE);
636         if (sc->irq_res == NULL) {
637                 device_printf(dev, "Cannot allocate IRQ resources\n");
638                 goto fail;
639         }
640
641         if ((bus_setup_intr(dev, sc->irq_res, INTR_TYPE_MISC | INTR_MPSAFE,
642             tsadc_intr, NULL, sc, &sc->irq_ih))) {
643                 device_printf(dev,
644                     "WARNING: unable to register interrupt handler\n");
645                 goto fail;
646         }
647
648         /* FDT resources */
649         rv = hwreset_get_by_ofw_name(dev, 0, "tsadc-apb", &sc->hwreset);
650         if (rv != 0) {
651                 device_printf(dev, "Cannot get 'tsadc-apb' reset\n");
652                 goto fail;
653         }
654         rv = clk_get_by_ofw_name(dev, 0, "tsadc", &sc->tsadc_clk);
655         if (rv != 0) {
656                 device_printf(dev, "Cannot get 'tsadc' clock: %d\n", rv);
657                 goto fail;
658         }
659         rv = clk_get_by_ofw_name(dev, 0, "apb_pclk", &sc->apb_pclk_clk);
660         if (rv != 0) {
661                 device_printf(dev, "Cannot get 'apb_pclk' clock: %d\n", rv);
662                 goto fail;
663         }
664
665         /* grf is optional */
666         rv = syscon_get_by_ofw_property(dev, node, "rockchip,grf", &sc->grf);
667         if (rv != 0 && rv != ENOENT) {
668                 device_printf(dev, "Cannot get 'grf' syscon: %d\n", rv);
669                 goto fail;
670         }
671
672         rv = OF_getencprop(node, "rockchip,hw-tshut-temp",
673             &sc->shutdown_temp, sizeof(sc->shutdown_temp));
674         if (rv <= 0)
675                 sc->shutdown_temp = sc->conf->shutdown_temp;
676
677         rv = OF_getencprop(node, "rockchip,hw-tshut-mode",
678             &sc->shutdown_mode, sizeof(sc->shutdown_mode));
679         if (rv <= 0)
680                 sc->shutdown_mode = sc->conf->shutdown_mode;
681
682         rv = OF_getencprop(node, "rockchip,hw-tshut-polarity",
683             &sc->shutdown_pol, sizeof(sc->shutdown_pol));
684         if (rv <= 0)
685                 sc->shutdown_pol = sc->conf->shutdown_pol;
686
687         /* Wakeup controller */
688         rv = hwreset_assert(sc->hwreset);
689         if (rv != 0) {
690                 device_printf(dev, "Cannot assert reset\n");
691                 goto fail;
692         }
693
694         /* Set the assigned clocks parent and freq */
695         rv = clk_set_assigned(sc->dev, node);
696         if (rv != 0 && rv != ENOENT) {
697                 device_printf(dev, "clk_set_assigned failed\n");
698                 goto fail;
699         }
700
701         rv = clk_enable(sc->tsadc_clk);
702         if (rv != 0) {
703                 device_printf(dev, "Cannot enable 'tsadc_clk' clock: %d\n", rv);
704                 goto fail;
705         }
706         rv = clk_enable(sc->apb_pclk_clk);
707         if (rv != 0) {
708                 device_printf(dev, "Cannot enable 'apb_pclk' clock: %d\n", rv);
709                 goto fail;
710         }
711         rv = hwreset_deassert(sc->hwreset);
712         if (rv != 0) {
713                 device_printf(dev, "Cannot deassert reset\n");
714                 goto fail;
715         }
716
717         tsadc_init(sc);
718         for (i = 0; i < sc->conf->ntsensors; i++)
719                 tsadc_init_tsensor(sc, sc->conf->tsensors + i);
720
721         /* Enable auto mode */
722         val = RD4(sc, TSADC_AUTO_CON);
723         val |= TSADC_AUTO_CON_AUTO;
724         WR4(sc, TSADC_AUTO_CON, val);
725
726         rv = tsadc_init_sysctl(sc);
727         if (rv != 0) {
728                 device_printf(sc->dev, "Cannot initialize sysctls\n");
729                 goto fail_sysctl;
730         }
731
732         OF_device_register_xref(OF_xref_from_node(node), dev);
733         return (bus_generic_attach(dev));
734
735 fail_sysctl:
736         sysctl_ctx_free(&tsadc_sysctl_ctx);
737 fail:
738         if (sc->irq_ih != NULL)
739                 bus_teardown_intr(dev, sc->irq_res, sc->irq_ih);
740         if (sc->tsadc_clk != NULL)
741                 clk_release(sc->tsadc_clk);
742         if (sc->apb_pclk_clk != NULL)
743                 clk_release(sc->apb_pclk_clk);
744         if (sc->hwreset != NULL)
745                 hwreset_release(sc->hwreset);
746         if (sc->irq_res != NULL)
747                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
748         if (sc->mem_res != NULL)
749                 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res);
750
751         return (ENXIO);
752 }
753
754 static int
755 tsadc_detach(device_t dev)
756 {
757         struct tsadc_softc *sc;
758         sc = device_get_softc(dev);
759
760         if (sc->irq_ih != NULL)
761                 bus_teardown_intr(dev, sc->irq_res, sc->irq_ih);
762         sysctl_ctx_free(&tsadc_sysctl_ctx);
763         if (sc->tsadc_clk != NULL)
764                 clk_release(sc->tsadc_clk);
765         if (sc->apb_pclk_clk != NULL)
766                 clk_release(sc->apb_pclk_clk);
767         if (sc->hwreset != NULL)
768                 hwreset_release(sc->hwreset);
769         if (sc->irq_res != NULL)
770                 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->irq_res);
771         if (sc->mem_res != NULL)
772                 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->mem_res);
773
774         return (ENXIO);
775 }
776
777 static device_method_t rk_tsadc_methods[] = {
778         /* Device interface */
779         DEVMETHOD(device_probe,                 tsadc_probe),
780         DEVMETHOD(device_attach,                tsadc_attach),
781         DEVMETHOD(device_detach,                tsadc_detach),
782
783         /* TSADC interface */
784         DEVMETHOD(rk_tsadc_get_temperature,     tsadc_get_temp),
785
786         DEVMETHOD_END
787 };
788
789 static devclass_t rk_tsadc_devclass;
790 static DEFINE_CLASS_0(rk_tsadc, rk_tsadc_driver, rk_tsadc_methods,
791     sizeof(struct tsadc_softc));
792 EARLY_DRIVER_MODULE(rk_tsadc, simplebus, rk_tsadc_driver,
793     rk_tsadc_devclass, NULL, NULL, BUS_PASS_TIMER + BUS_PASS_ORDER_LAST);