1
2#include <linux/module.h>
3#include <linux/i2c.h>
4#include <linux/dmi.h>
5#include <linux/efi.h>
6#include <linux/pci.h>
7#include <linux/acpi.h>
8#include <linux/clk.h>
9#include <linux/delay.h>
10#include <media/v4l2-subdev.h>
11#include <linux/mfd/intel_soc_pmic.h>
12#include <linux/regulator/consumer.h>
13#include <linux/gpio/consumer.h>
14#include <linux/gpio.h>
15#include <linux/platform_device.h>
16#include "../../include/linux/atomisp_platform.h"
17#include "../../include/linux/atomisp_gmin_platform.h"
18
19#define MAX_SUBDEVS 8
20
21enum clock_rate {
22 VLV2_CLK_XTAL_25_0MHz = 0,
23 VLV2_CLK_PLL_19P2MHZ = 1
24};
25
26#define CLK_RATE_19_2MHZ 19200000
27#define CLK_RATE_25_0MHZ 25000000
28
29
30#define MAX_CLK_COUNT 5
31
32
33#define ALDO1_SEL_REG 0x28
34#define ALDO1_CTRL3_REG 0x13
35#define ALDO1_2P8V 0x16
36#define ALDO1_CTRL3_SHIFT 0x05
37
38#define ELDO_CTRL_REG 0x12
39
40#define ELDO1_SEL_REG 0x19
41#define ELDO1_1P8V 0x16
42#define ELDO1_CTRL_SHIFT 0x00
43
44#define ELDO2_SEL_REG 0x1a
45#define ELDO2_1P8V 0x16
46#define ELDO2_CTRL_SHIFT 0x01
47
48
49#define LDO9_REG 0x49
50#define LDO10_REG 0x4a
51#define LDO11_REG 0x4b
52
53#define LDO_2P8V_ON 0x2f
54#define LDO_2P8V_OFF 0x2e
55
56#define LDO_1P8V_ON 0x59
57#define LDO_1P8V_OFF 0x58
58
59
60#define CRYSTAL_1P8V_REG 0x57
61#define CRYSTAL_2P8V_REG 0x5d
62#define CRYSTAL_ON 0x63
63#define CRYSTAL_OFF 0x62
64
65struct gmin_subdev {
66 struct v4l2_subdev *subdev;
67 enum clock_rate clock_src;
68 struct clk *pmc_clk;
69 struct gpio_desc *gpio0;
70 struct gpio_desc *gpio1;
71 struct regulator *v1p8_reg;
72 struct regulator *v2p8_reg;
73 struct regulator *v1p2_reg;
74 struct regulator *v2p8_vcm_reg;
75 enum atomisp_camera_port csi_port;
76 unsigned int csi_lanes;
77 enum atomisp_input_format csi_fmt;
78 enum atomisp_bayer_order csi_bayer;
79
80 bool clock_on;
81 bool v1p8_on;
82 bool v2p8_on;
83 bool v1p2_on;
84 bool v2p8_vcm_on;
85
86 int v1p8_gpio;
87 int v2p8_gpio;
88
89 u8 pwm_i2c_addr;
90
91
92 int eldo1_sel_reg, eldo1_1p8v, eldo1_ctrl_shift;
93 int eldo2_sel_reg, eldo2_1p8v, eldo2_ctrl_shift;
94};
95
96static struct gmin_subdev gmin_subdevs[MAX_SUBDEVS];
97
98
99#define PMIC_ACPI_AXP "INT33F4"
100#define PMIC_ACPI_TI "INT33F5"
101#define PMIC_ACPI_CRYSTALCOVE "INT33FD"
102
103#define PMIC_PLATFORM_TI "intel_soc_pmic_chtdc_ti"
104
105static enum {
106 PMIC_UNSET = 0,
107 PMIC_REGULATOR,
108 PMIC_AXP,
109 PMIC_TI,
110 PMIC_CRYSTALCOVE
111} pmic_id;
112
113static const char *pmic_name[] = {
114 [PMIC_UNSET] = "ACPI device PM",
115 [PMIC_REGULATOR] = "regulator driver",
116 [PMIC_AXP] = "XPower AXP288 PMIC",
117 [PMIC_TI] = "Dollar Cove TI PMIC",
118 [PMIC_CRYSTALCOVE] = "Crystal Cove PMIC",
119};
120
121
122static struct intel_v4l2_subdev_table pdata_subdevs[MAX_SUBDEVS + 1];
123
124static const struct atomisp_platform_data pdata = {
125 .subdevs = pdata_subdevs,
126};
127
128static LIST_HEAD(vcm_devices);
129static DEFINE_MUTEX(vcm_lock);
130
131static struct gmin_subdev *find_gmin_subdev(struct v4l2_subdev *subdev);
132
133
134
135
136
137
138
139const struct atomisp_camera_caps *atomisp_get_default_camera_caps(void)
140{
141 static const struct atomisp_camera_caps caps = {
142 .sensor_num = 1,
143 .sensor = {
144 { .stream_num = 1, },
145 },
146 };
147 return ∩︀
148}
149EXPORT_SYMBOL_GPL(atomisp_get_default_camera_caps);
150
151const struct atomisp_platform_data *atomisp_get_platform_data(void)
152{
153 return &pdata;
154}
155EXPORT_SYMBOL_GPL(atomisp_get_platform_data);
156
157int atomisp_register_i2c_module(struct v4l2_subdev *subdev,
158 struct camera_sensor_platform_data *plat_data,
159 enum intel_v4l2_subdev_type type)
160{
161 int i;
162 struct i2c_board_info *bi;
163 struct gmin_subdev *gs;
164 struct i2c_client *client = v4l2_get_subdevdata(subdev);
165 struct acpi_device *adev = ACPI_COMPANION(&client->dev);
166
167 dev_info(&client->dev, "register atomisp i2c module type %d\n", type);
168
169
170
171
172
173
174
175 adev->power.flags.power_resources = 0;
176
177 for (i = 0; i < MAX_SUBDEVS; i++)
178 if (!pdata.subdevs[i].type)
179 break;
180
181 if (pdata.subdevs[i].type)
182 return -ENOMEM;
183
184
185
186
187
188
189 gs = find_gmin_subdev(subdev);
190 if (!gs)
191 return -ENODEV;
192
193 pdata.subdevs[i].type = type;
194 pdata.subdevs[i].port = gs->csi_port;
195 pdata.subdevs[i].subdev = subdev;
196 pdata.subdevs[i].v4l2_subdev.i2c_adapter_id = client->adapter->nr;
197
198
199 bi = &pdata.subdevs[i].v4l2_subdev.board_info;
200 memcpy(bi->type, client->name, I2C_NAME_SIZE);
201 bi->flags = client->flags;
202 bi->addr = client->addr;
203 bi->irq = client->irq;
204 bi->platform_data = plat_data;
205
206 return 0;
207}
208EXPORT_SYMBOL_GPL(atomisp_register_i2c_module);
209
210struct v4l2_subdev *atomisp_gmin_find_subdev(struct i2c_adapter *adapter,
211 struct i2c_board_info *board_info)
212{
213 int i;
214
215 for (i = 0; i < MAX_SUBDEVS && pdata.subdevs[i].type; i++) {
216 struct intel_v4l2_subdev_table *sd = &pdata.subdevs[i];
217
218 if (sd->v4l2_subdev.i2c_adapter_id == adapter->nr &&
219 sd->v4l2_subdev.board_info.addr == board_info->addr)
220 return sd->subdev;
221 }
222 return NULL;
223}
224EXPORT_SYMBOL_GPL(atomisp_gmin_find_subdev);
225
226int atomisp_gmin_remove_subdev(struct v4l2_subdev *sd)
227{
228 int i, j;
229
230 if (!sd)
231 return 0;
232
233 for (i = 0; i < MAX_SUBDEVS; i++) {
234 if (pdata.subdevs[i].subdev == sd) {
235 for (j = i + 1; j <= MAX_SUBDEVS; j++)
236 pdata.subdevs[j - 1] = pdata.subdevs[j];
237 }
238 if (gmin_subdevs[i].subdev == sd) {
239 if (gmin_subdevs[i].gpio0)
240 gpiod_put(gmin_subdevs[i].gpio0);
241 gmin_subdevs[i].gpio0 = NULL;
242 if (gmin_subdevs[i].gpio1)
243 gpiod_put(gmin_subdevs[i].gpio1);
244 gmin_subdevs[i].gpio1 = NULL;
245 if (pmic_id == PMIC_REGULATOR) {
246 regulator_put(gmin_subdevs[i].v1p8_reg);
247 regulator_put(gmin_subdevs[i].v2p8_reg);
248 regulator_put(gmin_subdevs[i].v1p2_reg);
249 regulator_put(gmin_subdevs[i].v2p8_vcm_reg);
250 }
251 gmin_subdevs[i].subdev = NULL;
252 }
253 }
254 return 0;
255}
256EXPORT_SYMBOL_GPL(atomisp_gmin_remove_subdev);
257
258struct gmin_cfg_var {
259 const char *name, *val;
260};
261
262static struct gmin_cfg_var ffrd8_vars[] = {
263 { "INTCF1B:00_ImxId", "0x134" },
264 { "INTCF1B:00_CsiPort", "1" },
265 { "INTCF1B:00_CsiLanes", "4" },
266 { "INTCF1B:00_CamClk", "0" },
267 {},
268};
269
270
271
272
273static struct gmin_cfg_var t100_vars[] = {
274 { "INT33F0:00_CsiPort", "0" },
275 { "INT33F0:00_CsiLanes", "1" },
276 { "INT33F0:00_CamClk", "1" },
277 {},
278};
279
280static struct gmin_cfg_var mrd7_vars[] = {
281 {"INT33F8:00_CamType", "1"},
282 {"INT33F8:00_CsiPort", "1"},
283 {"INT33F8:00_CsiLanes", "2"},
284 {"INT33F8:00_CsiFmt", "13"},
285 {"INT33F8:00_CsiBayer", "0"},
286 {"INT33F8:00_CamClk", "0"},
287
288 {"INT33F9:00_CamType", "1"},
289 {"INT33F9:00_CsiPort", "0"},
290 {"INT33F9:00_CsiLanes", "1"},
291 {"INT33F9:00_CsiFmt", "13"},
292 {"INT33F9:00_CsiBayer", "0"},
293 {"INT33F9:00_CamClk", "1"},
294 {},
295};
296
297static struct gmin_cfg_var ecs7_vars[] = {
298 {"INT33BE:00_CsiPort", "1"},
299 {"INT33BE:00_CsiLanes", "2"},
300 {"INT33BE:00_CsiFmt", "13"},
301 {"INT33BE:00_CsiBayer", "2"},
302 {"INT33BE:00_CamClk", "0"},
303
304 {"INT33F0:00_CsiPort", "0"},
305 {"INT33F0:00_CsiLanes", "1"},
306 {"INT33F0:00_CsiFmt", "13"},
307 {"INT33F0:00_CsiBayer", "0"},
308 {"INT33F0:00_CamClk", "1"},
309 {"gmin_V2P8GPIO", "402"},
310 {},
311};
312
313static struct gmin_cfg_var i8880_vars[] = {
314 {"XXOV2680:00_CsiPort", "1"},
315 {"XXOV2680:00_CsiLanes", "1"},
316 {"XXOV2680:00_CamClk", "0"},
317
318 {"XXGC0310:00_CsiPort", "0"},
319 {"XXGC0310:00_CsiLanes", "1"},
320 {"XXGC0310:00_CamClk", "1"},
321 {},
322};
323
324static const struct dmi_system_id gmin_vars[] = {
325 {
326 .ident = "BYT-T FFD8",
327 .matches = {
328 DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"),
329 },
330 .driver_data = ffrd8_vars,
331 },
332 {
333 .ident = "T100TA",
334 .matches = {
335 DMI_MATCH(DMI_BOARD_NAME, "T100TA"),
336 },
337 .driver_data = t100_vars,
338 },
339 {
340 .ident = "MRD7",
341 .matches = {
342 DMI_MATCH(DMI_BOARD_NAME, "TABLET"),
343 DMI_MATCH(DMI_BOARD_VERSION, "MRD 7"),
344 },
345 .driver_data = mrd7_vars,
346 },
347 {
348 .ident = "ST70408",
349 .matches = {
350 DMI_MATCH(DMI_BOARD_NAME, "ST70408"),
351 },
352 .driver_data = ecs7_vars,
353 },
354 {
355 .ident = "VTA0803",
356 .matches = {
357 DMI_MATCH(DMI_BOARD_NAME, "VTA0803"),
358 },
359 .driver_data = i8880_vars,
360 },
361 {}
362};
363
364#define GMIN_CFG_VAR_EFI_GUID EFI_GUID(0xecb54cd9, 0xe5ae, 0x4fdc, \
365 0xa9, 0x71, 0xe8, 0x77, \
366 0x75, 0x60, 0x68, 0xf7)
367
368static const guid_t atomisp_dsm_guid = GUID_INIT(0xdc2f6c4f, 0x045b, 0x4f1d,
369 0x97, 0xb9, 0x88, 0x2a,
370 0x68, 0x60, 0xa4, 0xbe);
371
372#define CFG_VAR_NAME_MAX 64
373
374#define GMIN_PMC_CLK_NAME 14
375static char gmin_pmc_clk_name[GMIN_PMC_CLK_NAME];
376
377static struct i2c_client *gmin_i2c_dev_exists(struct device *dev, char *name,
378 struct i2c_client **client)
379{
380 struct acpi_device *adev;
381 struct device *d;
382
383 adev = acpi_dev_get_first_match_dev(name, NULL, -1);
384 if (!adev)
385 return NULL;
386
387 d = bus_find_device_by_acpi_dev(&i2c_bus_type, adev);
388 acpi_dev_put(adev);
389 if (!d)
390 return NULL;
391
392 *client = i2c_verify_client(d);
393 put_device(d);
394
395 dev_dbg(dev, "found '%s' at address 0x%02x, adapter %d\n",
396 (*client)->name, (*client)->addr, (*client)->adapter->nr);
397 return *client;
398}
399
400static int gmin_i2c_write(struct device *dev, u16 i2c_addr, u8 reg,
401 u32 value, u32 mask)
402{
403 int ret;
404
405
406
407
408
409
410
411
412 dev_dbg(dev,
413 "I2C write, addr: 0x%02x, reg: 0x%02x, value: 0x%02x, mask: 0x%02x\n",
414 i2c_addr, reg, value, mask);
415
416 ret = intel_soc_pmic_exec_mipi_pmic_seq_element(i2c_addr, reg, value, mask);
417 if (ret == -EOPNOTSUPP)
418 dev_err(dev,
419 "ACPI didn't mapped the OpRegion needed to access I2C address 0x%02x.\n"
420 "Need to compile the kernel using CONFIG_*_PMIC_OPREGION settings\n",
421 i2c_addr);
422
423 return ret;
424}
425
426static int atomisp_get_acpi_power(struct device *dev)
427{
428 char name[5];
429 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
430 struct acpi_buffer b_name = { sizeof(name), name };
431 union acpi_object *package, *element;
432 acpi_handle handle = ACPI_HANDLE(dev);
433 acpi_handle rhandle;
434 acpi_status status;
435 int clock_num = -1;
436 int i;
437
438 status = acpi_evaluate_object(handle, "_PR0", NULL, &buffer);
439 if (!ACPI_SUCCESS(status))
440 return -1;
441
442 package = buffer.pointer;
443
444 if (!buffer.length || !package
445 || package->type != ACPI_TYPE_PACKAGE
446 || !package->package.count)
447 goto fail;
448
449 for (i = 0; i < package->package.count; i++) {
450 element = &package->package.elements[i];
451
452 if (element->type != ACPI_TYPE_LOCAL_REFERENCE)
453 continue;
454
455 rhandle = element->reference.handle;
456 if (!rhandle)
457 goto fail;
458
459 acpi_get_name(rhandle, ACPI_SINGLE_NAME, &b_name);
460
461 dev_dbg(dev, "Found PM resource '%s'\n", name);
462 if (strlen(name) == 4 && !strncmp(name, "CLK", 3)) {
463 if (name[3] >= '0' && name[3] <= '4')
464 clock_num = name[3] - '0';
465#if 0
466
467
468
469
470 if (clock_num >= 0)
471 break;
472#endif
473 }
474 }
475
476fail:
477 ACPI_FREE(buffer.pointer);
478
479 return clock_num;
480}
481
482static u8 gmin_get_pmic_id_and_addr(struct device *dev)
483{
484 struct i2c_client *power;
485 static u8 pmic_i2c_addr;
486
487 if (pmic_id)
488 return pmic_i2c_addr;
489
490 if (gmin_i2c_dev_exists(dev, PMIC_ACPI_TI, &power))
491 pmic_id = PMIC_TI;
492 else if (gmin_i2c_dev_exists(dev, PMIC_ACPI_AXP, &power))
493 pmic_id = PMIC_AXP;
494 else if (gmin_i2c_dev_exists(dev, PMIC_ACPI_CRYSTALCOVE, &power))
495 pmic_id = PMIC_CRYSTALCOVE;
496 else
497 pmic_id = PMIC_REGULATOR;
498
499 pmic_i2c_addr = power ? power->addr : 0;
500 return pmic_i2c_addr;
501}
502
503static int gmin_detect_pmic(struct v4l2_subdev *subdev)
504{
505 struct i2c_client *client = v4l2_get_subdevdata(subdev);
506 struct device *dev = &client->dev;
507 u8 pmic_i2c_addr;
508
509 pmic_i2c_addr = gmin_get_pmic_id_and_addr(dev);
510 dev_info(dev, "gmin: power management provided via %s (i2c addr 0x%02x)\n",
511 pmic_name[pmic_id], pmic_i2c_addr);
512 return pmic_i2c_addr;
513}
514
515static int gmin_subdev_add(struct gmin_subdev *gs)
516{
517 struct i2c_client *client = v4l2_get_subdevdata(gs->subdev);
518 struct device *dev = &client->dev;
519 struct acpi_device *adev = ACPI_COMPANION(dev);
520 int ret, clock_num = -1;
521
522 dev_info(dev, "%s: ACPI path is %pfw\n", __func__, dev_fwnode(dev));
523
524
525 gs->clock_src = gmin_get_var_int(dev, false, "ClkSrc",
526 VLV2_CLK_PLL_19P2MHZ);
527
528 gs->csi_port = gmin_get_var_int(dev, false, "CsiPort", 0);
529 gs->csi_lanes = gmin_get_var_int(dev, false, "CsiLanes", 1);
530
531 gs->gpio0 = gpiod_get_index(dev, NULL, 0, GPIOD_OUT_LOW);
532 if (IS_ERR(gs->gpio0))
533 gs->gpio0 = NULL;
534 else
535 dev_info(dev, "will handle gpio0 via ACPI\n");
536
537 gs->gpio1 = gpiod_get_index(dev, NULL, 1, GPIOD_OUT_LOW);
538 if (IS_ERR(gs->gpio1))
539 gs->gpio1 = NULL;
540 else
541 dev_info(dev, "will handle gpio1 via ACPI\n");
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557 gs->v1p8_gpio = gmin_get_var_int(dev, true, "V1P8GPIO", -1);
558 gs->v2p8_gpio = gmin_get_var_int(dev, true, "V2P8GPIO", -1);
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582 if (acpi_device_can_wakeup(adev) &&
583 acpi_device_can_poweroff(adev)) {
584 dev_info(dev,
585 "gmin: power management provided via device PM\n");
586 return 0;
587 }
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610 if (acpi_device_power_manageable(adev))
611 clock_num = atomisp_get_acpi_power(dev);
612
613
614 if (clock_num < 0)
615 clock_num = gmin_get_var_int(dev, false, "CamClk", 0);
616
617 if (clock_num < 0 || clock_num > MAX_CLK_COUNT) {
618 dev_err(dev, "Invalid clock number\n");
619 return -EINVAL;
620 }
621
622 snprintf(gmin_pmc_clk_name, sizeof(gmin_pmc_clk_name),
623 "%s_%d", "pmc_plt_clk", clock_num);
624
625 gs->pmc_clk = devm_clk_get(dev, gmin_pmc_clk_name);
626 if (IS_ERR(gs->pmc_clk)) {
627 ret = PTR_ERR(gs->pmc_clk);
628 dev_err(dev, "Failed to get clk from %s: %d\n", gmin_pmc_clk_name, ret);
629 return ret;
630 }
631 dev_info(dev, "Will use CLK%d (%s)\n", clock_num, gmin_pmc_clk_name);
632
633
634
635
636
637
638
639
640
641
642
643 ret = clk_prepare_enable(gs->pmc_clk);
644 if (!ret)
645 clk_disable_unprepare(gs->pmc_clk);
646
647 switch (pmic_id) {
648 case PMIC_REGULATOR:
649 gs->v1p8_reg = regulator_get(dev, "V1P8SX");
650 gs->v2p8_reg = regulator_get(dev, "V2P8SX");
651
652 gs->v1p2_reg = regulator_get(dev, "V1P2A");
653 gs->v2p8_vcm_reg = regulator_get(dev, "VPROG4B");
654
655
656
657
658
659
660
661
662 break;
663
664 case PMIC_AXP:
665 gs->eldo1_1p8v = gmin_get_var_int(dev, false,
666 "eldo1_1p8v",
667 ELDO1_1P8V);
668 gs->eldo1_sel_reg = gmin_get_var_int(dev, false,
669 "eldo1_sel_reg",
670 ELDO1_SEL_REG);
671 gs->eldo1_ctrl_shift = gmin_get_var_int(dev, false,
672 "eldo1_ctrl_shift",
673 ELDO1_CTRL_SHIFT);
674 gs->eldo2_1p8v = gmin_get_var_int(dev, false,
675 "eldo2_1p8v",
676 ELDO2_1P8V);
677 gs->eldo2_sel_reg = gmin_get_var_int(dev, false,
678 "eldo2_sel_reg",
679 ELDO2_SEL_REG);
680 gs->eldo2_ctrl_shift = gmin_get_var_int(dev, false,
681 "eldo2_ctrl_shift",
682 ELDO2_CTRL_SHIFT);
683 break;
684
685 default:
686 break;
687 }
688
689 return 0;
690}
691
692static struct gmin_subdev *find_gmin_subdev(struct v4l2_subdev *subdev)
693{
694 int i;
695
696 for (i = 0; i < MAX_SUBDEVS; i++)
697 if (gmin_subdevs[i].subdev == subdev)
698 return &gmin_subdevs[i];
699 return NULL;
700}
701
702static struct gmin_subdev *find_free_gmin_subdev_slot(void)
703{
704 unsigned int i;
705
706 for (i = 0; i < MAX_SUBDEVS; i++)
707 if (gmin_subdevs[i].subdev == NULL)
708 return &gmin_subdevs[i];
709 return NULL;
710}
711
712static int axp_regulator_set(struct device *dev, struct gmin_subdev *gs,
713 int sel_reg, u8 setting,
714 int ctrl_reg, int shift, bool on)
715{
716 int ret;
717 int val;
718
719 ret = gmin_i2c_write(dev, gs->pwm_i2c_addr, sel_reg, setting, 0xff);
720 if (ret)
721 return ret;
722
723 val = on ? 1 << shift : 0;
724
725 ret = gmin_i2c_write(dev, gs->pwm_i2c_addr, sel_reg, val, 1 << shift);
726 if (ret)
727 return ret;
728
729 return 0;
730}
731
732static int axp_v1p8_on(struct device *dev, struct gmin_subdev *gs)
733{
734 int ret;
735
736 ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v,
737 ELDO_CTRL_REG, gs->eldo2_ctrl_shift, true);
738 if (ret)
739 return ret;
740
741
742
743
744
745 usleep_range(110, 150);
746
747 ret = axp_regulator_set(dev, gs, gs->eldo1_sel_reg, gs->eldo1_1p8v,
748 ELDO_CTRL_REG, gs->eldo1_ctrl_shift, true);
749 if (ret)
750 return ret;
751
752 ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v,
753 ELDO_CTRL_REG, gs->eldo2_ctrl_shift, false);
754 return ret;
755}
756
757static int axp_v1p8_off(struct device *dev, struct gmin_subdev *gs)
758{
759 int ret;
760
761 ret = axp_regulator_set(dev, gs, gs->eldo1_sel_reg, gs->eldo1_1p8v,
762 ELDO_CTRL_REG, gs->eldo1_ctrl_shift, false);
763 if (ret)
764 return ret;
765
766 ret = axp_regulator_set(dev, gs, gs->eldo2_sel_reg, gs->eldo2_1p8v,
767 ELDO_CTRL_REG, gs->eldo2_ctrl_shift, false);
768 return ret;
769}
770
771static int gmin_gpio0_ctrl(struct v4l2_subdev *subdev, int on)
772{
773 struct gmin_subdev *gs = find_gmin_subdev(subdev);
774
775 if (gs) {
776 gpiod_set_value(gs->gpio0, on);
777 return 0;
778 }
779 return -EINVAL;
780}
781
782static int gmin_gpio1_ctrl(struct v4l2_subdev *subdev, int on)
783{
784 struct gmin_subdev *gs = find_gmin_subdev(subdev);
785
786 if (gs) {
787 gpiod_set_value(gs->gpio1, on);
788 return 0;
789 }
790 return -EINVAL;
791}
792
793static int gmin_v1p2_ctrl(struct v4l2_subdev *subdev, int on)
794{
795 struct gmin_subdev *gs = find_gmin_subdev(subdev);
796
797 if (!gs || gs->v1p2_on == on)
798 return 0;
799 gs->v1p2_on = on;
800
801
802 if (gs->v1p2_reg) {
803 if (on)
804 return regulator_enable(gs->v1p2_reg);
805 else
806 return regulator_disable(gs->v1p2_reg);
807 }
808
809
810
811 return -EINVAL;
812}
813
814static int gmin_v1p8_ctrl(struct v4l2_subdev *subdev, int on)
815{
816 struct gmin_subdev *gs = find_gmin_subdev(subdev);
817 int ret;
818 int value;
819
820 if (!gs || gs->v1p8_on == on)
821 return 0;
822
823 if (gs->v1p8_gpio >= 0) {
824 pr_info("atomisp_gmin_platform: 1.8v power on GPIO %d\n",
825 gs->v1p8_gpio);
826 ret = gpio_request(gs->v1p8_gpio, "camera_v1p8_en");
827 if (!ret)
828 ret = gpio_direction_output(gs->v1p8_gpio, 0);
829 if (ret)
830 pr_err("V1P8 GPIO initialization failed\n");
831 }
832
833 gs->v1p8_on = on;
834
835 if (gs->v1p8_gpio >= 0)
836 gpio_set_value(gs->v1p8_gpio, on);
837
838 if (gs->v1p8_reg) {
839 regulator_set_voltage(gs->v1p8_reg, 1800000, 1800000);
840 if (on)
841 return regulator_enable(gs->v1p8_reg);
842 else
843 return regulator_disable(gs->v1p8_reg);
844 }
845
846 switch (pmic_id) {
847 case PMIC_AXP:
848 if (on)
849 return axp_v1p8_on(subdev->dev, gs);
850 else
851 return axp_v1p8_off(subdev->dev, gs);
852 case PMIC_TI:
853 value = on ? LDO_1P8V_ON : LDO_1P8V_OFF;
854
855 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr,
856 LDO10_REG, value, 0xff);
857 case PMIC_CRYSTALCOVE:
858 value = on ? CRYSTAL_ON : CRYSTAL_OFF;
859
860 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr,
861 CRYSTAL_1P8V_REG, value, 0xff);
862 default:
863 dev_err(subdev->dev, "Couldn't set power mode for v1p2\n");
864 }
865
866 return -EINVAL;
867}
868
869static int gmin_v2p8_ctrl(struct v4l2_subdev *subdev, int on)
870{
871 struct gmin_subdev *gs = find_gmin_subdev(subdev);
872 int ret;
873 int value;
874
875 if (WARN_ON(!gs))
876 return -ENODEV;
877
878 if (gs->v2p8_gpio >= 0) {
879 pr_info("atomisp_gmin_platform: 2.8v power on GPIO %d\n",
880 gs->v2p8_gpio);
881 ret = gpio_request(gs->v2p8_gpio, "camera_v2p8");
882 if (!ret)
883 ret = gpio_direction_output(gs->v2p8_gpio, 0);
884 if (ret)
885 pr_err("V2P8 GPIO initialization failed\n");
886 }
887
888 if (gs->v2p8_on == on)
889 return 0;
890 gs->v2p8_on = on;
891
892 if (gs->v2p8_gpio >= 0)
893 gpio_set_value(gs->v2p8_gpio, on);
894
895 if (gs->v2p8_reg) {
896 regulator_set_voltage(gs->v2p8_reg, 2900000, 2900000);
897 if (on)
898 return regulator_enable(gs->v2p8_reg);
899 else
900 return regulator_disable(gs->v2p8_reg);
901 }
902
903 switch (pmic_id) {
904 case PMIC_AXP:
905 return axp_regulator_set(subdev->dev, gs, ALDO1_SEL_REG,
906 ALDO1_2P8V, ALDO1_CTRL3_REG,
907 ALDO1_CTRL3_SHIFT, on);
908 case PMIC_TI:
909 value = on ? LDO_2P8V_ON : LDO_2P8V_OFF;
910
911 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr,
912 LDO9_REG, value, 0xff);
913 case PMIC_CRYSTALCOVE:
914 value = on ? CRYSTAL_ON : CRYSTAL_OFF;
915
916 return gmin_i2c_write(subdev->dev, gs->pwm_i2c_addr,
917 CRYSTAL_2P8V_REG, value, 0xff);
918 default:
919 dev_err(subdev->dev, "Couldn't set power mode for v1p2\n");
920 }
921
922 return -EINVAL;
923}
924
925static int gmin_acpi_pm_ctrl(struct v4l2_subdev *subdev, int on)
926{
927 int ret = 0;
928 struct gmin_subdev *gs = find_gmin_subdev(subdev);
929 struct i2c_client *client = v4l2_get_subdevdata(subdev);
930 struct acpi_device *adev = ACPI_COMPANION(&client->dev);
931
932
933 on = !!on;
934 if (gs->clock_on == on)
935 return 0;
936
937 dev_dbg(subdev->dev, "Setting power state to %s\n",
938 on ? "on" : "off");
939
940 if (on)
941 ret = acpi_device_set_power(adev,
942 ACPI_STATE_D0);
943 else
944 ret = acpi_device_set_power(adev,
945 ACPI_STATE_D3_COLD);
946
947 if (!ret)
948 gs->clock_on = on;
949 else
950 dev_err(subdev->dev, "Couldn't set power state to %s\n",
951 on ? "on" : "off");
952
953 return ret;
954}
955
956static int gmin_flisclk_ctrl(struct v4l2_subdev *subdev, int on)
957{
958 int ret = 0;
959 struct gmin_subdev *gs = find_gmin_subdev(subdev);
960 struct i2c_client *client = v4l2_get_subdevdata(subdev);
961
962 if (gs->clock_on == !!on)
963 return 0;
964
965 if (on) {
966 ret = clk_set_rate(gs->pmc_clk,
967 gs->clock_src ? CLK_RATE_19_2MHZ : CLK_RATE_25_0MHZ);
968
969 if (ret)
970 dev_err(&client->dev, "unable to set PMC rate %d\n",
971 gs->clock_src);
972
973 ret = clk_prepare_enable(gs->pmc_clk);
974 if (ret == 0)
975 gs->clock_on = true;
976 } else {
977 clk_disable_unprepare(gs->pmc_clk);
978 gs->clock_on = false;
979 }
980
981 return ret;
982}
983
984static int gmin_csi_cfg(struct v4l2_subdev *sd, int flag)
985{
986 struct i2c_client *client = v4l2_get_subdevdata(sd);
987 struct gmin_subdev *gs = find_gmin_subdev(sd);
988
989 if (!client || !gs)
990 return -ENODEV;
991
992 return camera_sensor_csi(sd, gs->csi_port, gs->csi_lanes,
993 gs->csi_fmt, gs->csi_bayer, flag);
994}
995
996static struct camera_vcm_control *gmin_get_vcm_ctrl(struct v4l2_subdev *subdev,
997 char *camera_module)
998{
999 struct i2c_client *client = v4l2_get_subdevdata(subdev);
1000 struct gmin_subdev *gs = find_gmin_subdev(subdev);
1001 struct camera_vcm_control *vcm;
1002
1003 if (!client || !gs)
1004 return NULL;
1005
1006 if (!camera_module)
1007 return NULL;
1008
1009 mutex_lock(&vcm_lock);
1010 list_for_each_entry(vcm, &vcm_devices, list) {
1011 if (!strcmp(camera_module, vcm->camera_module)) {
1012 mutex_unlock(&vcm_lock);
1013 return vcm;
1014 }
1015 }
1016
1017 mutex_unlock(&vcm_lock);
1018 return NULL;
1019}
1020
1021static struct camera_sensor_platform_data pmic_gmin_plat = {
1022 .gpio0_ctrl = gmin_gpio0_ctrl,
1023 .gpio1_ctrl = gmin_gpio1_ctrl,
1024 .v1p8_ctrl = gmin_v1p8_ctrl,
1025 .v2p8_ctrl = gmin_v2p8_ctrl,
1026 .v1p2_ctrl = gmin_v1p2_ctrl,
1027 .flisclk_ctrl = gmin_flisclk_ctrl,
1028 .csi_cfg = gmin_csi_cfg,
1029 .get_vcm_ctrl = gmin_get_vcm_ctrl,
1030};
1031
1032static struct camera_sensor_platform_data acpi_gmin_plat = {
1033 .gpio0_ctrl = gmin_gpio0_ctrl,
1034 .gpio1_ctrl = gmin_gpio1_ctrl,
1035 .v1p8_ctrl = gmin_acpi_pm_ctrl,
1036 .v2p8_ctrl = gmin_acpi_pm_ctrl,
1037 .v1p2_ctrl = gmin_acpi_pm_ctrl,
1038 .flisclk_ctrl = gmin_acpi_pm_ctrl,
1039 .csi_cfg = gmin_csi_cfg,
1040 .get_vcm_ctrl = gmin_get_vcm_ctrl,
1041};
1042
1043struct camera_sensor_platform_data *
1044gmin_camera_platform_data(struct v4l2_subdev *subdev,
1045 enum atomisp_input_format csi_format,
1046 enum atomisp_bayer_order csi_bayer)
1047{
1048 u8 pmic_i2c_addr = gmin_detect_pmic(subdev);
1049 struct gmin_subdev *gs;
1050
1051 gs = find_free_gmin_subdev_slot();
1052 gs->subdev = subdev;
1053 gs->csi_fmt = csi_format;
1054 gs->csi_bayer = csi_bayer;
1055 gs->pwm_i2c_addr = pmic_i2c_addr;
1056
1057 gmin_subdev_add(gs);
1058 if (gs->pmc_clk)
1059 return &pmic_gmin_plat;
1060 else
1061 return &acpi_gmin_plat;
1062}
1063EXPORT_SYMBOL_GPL(gmin_camera_platform_data);
1064
1065int atomisp_gmin_register_vcm_control(struct camera_vcm_control *vcmCtrl)
1066{
1067 if (!vcmCtrl)
1068 return -EINVAL;
1069
1070 mutex_lock(&vcm_lock);
1071 list_add_tail(&vcmCtrl->list, &vcm_devices);
1072 mutex_unlock(&vcm_lock);
1073
1074 return 0;
1075}
1076EXPORT_SYMBOL_GPL(atomisp_gmin_register_vcm_control);
1077
1078static int gmin_get_hardcoded_var(struct device *dev,
1079 struct gmin_cfg_var *varlist,
1080 const char *var8, char *out, size_t *out_len)
1081{
1082 struct gmin_cfg_var *gv;
1083
1084 for (gv = varlist; gv->name; gv++) {
1085 size_t vl;
1086
1087 if (strcmp(var8, gv->name))
1088 continue;
1089
1090 dev_info(dev, "Found DMI entry for '%s'\n", var8);
1091
1092 vl = strlen(gv->val);
1093 if (vl > *out_len - 1)
1094 return -ENOSPC;
1095
1096 strscpy(out, gv->val, *out_len);
1097 *out_len = vl;
1098 return 0;
1099 }
1100
1101 return -EINVAL;
1102}
1103
1104
1105static int gmin_get_config_dsm_var(struct device *dev,
1106 const char *var,
1107 char *out, size_t *out_len)
1108{
1109 acpi_handle handle = ACPI_HANDLE(dev);
1110 union acpi_object *obj, *cur = NULL;
1111 int i;
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122 if (!strcmp(var, "CamClk"))
1123 return -EINVAL;
1124
1125 obj = acpi_evaluate_dsm(handle, &atomisp_dsm_guid, 0, 0, NULL);
1126 if (!obj) {
1127 dev_info_once(dev, "Didn't find ACPI _DSM table.\n");
1128 return -EINVAL;
1129 }
1130
1131
1132 if (obj->type != ACPI_TYPE_PACKAGE)
1133 return -EINVAL;
1134
1135#if 0
1136 for (i = 0; i < obj->package.count; i++) {
1137 union acpi_object *cur = &obj->package.elements[i];
1138
1139 if (cur->type == ACPI_TYPE_INTEGER)
1140 dev_info(dev, "object #%d, type %d, value: %lld\n",
1141 i, cur->type, cur->integer.value);
1142 else if (cur->type == ACPI_TYPE_STRING)
1143 dev_info(dev, "object #%d, type %d, string: %s\n",
1144 i, cur->type, cur->string.pointer);
1145 else
1146 dev_info(dev, "object #%d, type %d\n",
1147 i, cur->type);
1148 }
1149#endif
1150
1151
1152 for (i = 0; i < obj->package.count - 1; i += 2) {
1153 if (obj->package.elements[i].type == ACPI_TYPE_STRING &&
1154 !strcmp(obj->package.elements[i].string.pointer, var)) {
1155
1156 cur = &obj->package.elements[i + 1];
1157 break;
1158 }
1159 }
1160
1161 if (!cur) {
1162 dev_info(dev, "didn't found _DSM entry for '%s'\n", var);
1163 ACPI_FREE(obj);
1164 return -EINVAL;
1165 }
1166
1167
1168
1169
1170
1171
1172
1173
1174 if (cur && cur->type != ACPI_TYPE_STRING) {
1175 dev_info(dev, "found non-string _DSM entry for '%s'\n", var);
1176 ACPI_FREE(obj);
1177 return -EINVAL;
1178 }
1179
1180 dev_info(dev, "found _DSM entry for '%s': %s\n", var,
1181 cur->string.pointer);
1182 strscpy(out, cur->string.pointer, *out_len);
1183 *out_len = strlen(cur->string.pointer);
1184
1185 ACPI_FREE(obj);
1186 return 0;
1187}
1188
1189
1190
1191
1192
1193static int gmin_get_config_var(struct device *maindev,
1194 bool is_gmin,
1195 const char *var,
1196 char *out, size_t *out_len)
1197{
1198 efi_char16_t var16[CFG_VAR_NAME_MAX];
1199 const struct dmi_system_id *id;
1200 struct device *dev = maindev;
1201 char var8[CFG_VAR_NAME_MAX];
1202 struct efivar_entry *ev;
1203 int i, ret;
1204
1205
1206 if (!is_gmin) {
1207 ret = gmin_get_config_dsm_var(maindev, var, out, out_len);
1208 if (!ret)
1209 return 0;
1210 }
1211
1212
1213
1214 if (!is_gmin && ACPI_COMPANION(dev))
1215 dev = &ACPI_COMPANION(dev)->dev;
1216
1217 if (!is_gmin)
1218 ret = snprintf(var8, sizeof(var8), "%s_%s", dev_name(dev), var);
1219 else
1220 ret = snprintf(var8, sizeof(var8), "gmin_%s", var);
1221
1222 if (ret < 0 || ret >= sizeof(var8) - 1)
1223 return -EINVAL;
1224
1225
1226
1227
1228
1229 id = dmi_first_match(gmin_vars);
1230 if (id) {
1231 ret = gmin_get_hardcoded_var(maindev, id->driver_data, var8,
1232 out, out_len);
1233 if (!ret)
1234 return 0;
1235 }
1236
1237
1238
1239
1240 memset(var16, 0, sizeof(var16));
1241 for (i = 0; i < sizeof(var8) && var8[i]; i++)
1242 var16[i] = var8[i];
1243
1244
1245
1246
1247
1248
1249
1250 ev = kzalloc(sizeof(*ev), GFP_KERNEL);
1251 if (!ev)
1252 return -ENOMEM;
1253 memcpy(&ev->var.VariableName, var16, sizeof(var16));
1254 ev->var.VendorGuid = GMIN_CFG_VAR_EFI_GUID;
1255 ev->var.DataSize = *out_len;
1256
1257 ret = efivar_entry_get(ev, &ev->var.Attributes,
1258 &ev->var.DataSize, ev->var.Data);
1259 if (ret == 0) {
1260 memcpy(out, ev->var.Data, ev->var.DataSize);
1261 *out_len = ev->var.DataSize;
1262 dev_info(maindev, "found EFI entry for '%s'\n", var8);
1263 } else if (is_gmin) {
1264 dev_info(maindev, "Failed to find EFI gmin variable %s\n", var8);
1265 } else {
1266 dev_info(maindev, "Failed to find EFI variable %s\n", var8);
1267 }
1268
1269 kfree(ev);
1270
1271 return ret;
1272}
1273
1274int gmin_get_var_int(struct device *dev, bool is_gmin, const char *var, int def)
1275{
1276 char val[CFG_VAR_NAME_MAX];
1277 size_t len = sizeof(val);
1278 long result;
1279 int ret;
1280
1281 ret = gmin_get_config_var(dev, is_gmin, var, val, &len);
1282 if (!ret) {
1283 val[len] = 0;
1284 ret = kstrtol(val, 0, &result);
1285 } else {
1286 dev_info(dev, "%s: using default (%d)\n", var, def);
1287 }
1288
1289 return ret ? def : result;
1290}
1291EXPORT_SYMBOL_GPL(gmin_get_var_int);
1292
1293int camera_sensor_csi(struct v4l2_subdev *sd, u32 port,
1294 u32 lanes, u32 format, u32 bayer_order, int flag)
1295{
1296 struct i2c_client *client = v4l2_get_subdevdata(sd);
1297 struct camera_mipi_info *csi = NULL;
1298
1299 if (flag) {
1300 csi = kzalloc(sizeof(*csi), GFP_KERNEL);
1301 if (!csi)
1302 return -ENOMEM;
1303 csi->port = port;
1304 csi->num_lanes = lanes;
1305 csi->input_format = format;
1306 csi->raw_bayer_order = bayer_order;
1307 v4l2_set_subdev_hostdata(sd, (void *)csi);
1308 csi->metadata_format = ATOMISP_INPUT_FORMAT_EMBEDDED;
1309 csi->metadata_effective_width = NULL;
1310 dev_info(&client->dev,
1311 "camera pdata: port: %d lanes: %d order: %8.8x\n",
1312 port, lanes, bayer_order);
1313 } else {
1314 csi = v4l2_get_subdev_hostdata(sd);
1315 kfree(csi);
1316 }
1317
1318 return 0;
1319}
1320EXPORT_SYMBOL_GPL(camera_sensor_csi);
1321
1322
1323
1324
1325
1326
1327static void isp_pm_cap_fixup(struct pci_dev *pdev)
1328{
1329 dev_info(&pdev->dev, "Disabling PCI power management on camera ISP\n");
1330 pdev->pm_cap = 0;
1331}
1332DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0f38, isp_pm_cap_fixup);
1333
1334MODULE_DESCRIPTION("Ancillary routines for binding ACPI devices");
1335MODULE_LICENSE("GPL");
1336