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Input: xpad - add support for Xbox1 PDP Camo series gamepad
[linux/fpc-iii.git] / drivers / media / platform / ti-vpe / cal.c
blob44323cb5d287578e8353f7ae89c21ae2ff7eb829
1 /*
2 * TI CAL camera interface driver
3 *
4 * Copyright (c) 2015 Texas Instruments Inc.
5 * Benoit Parrot, <bparrot@ti.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation
10 */
11
12 #include <linux/interrupt.h>
13 #include <linux/io.h>
14 #include <linux/ioctl.h>
15 #include <linux/module.h>
16 #include <linux/platform_device.h>
17 #include <linux/delay.h>
18 #include <linux/pm_runtime.h>
19 #include <linux/slab.h>
20 #include <linux/videodev2.h>
21 #include <linux/of_device.h>
22 #include <linux/of_graph.h>
23
24 #include <media/v4l2-of.h>
25 #include <media/v4l2-async.h>
26 #include <media/v4l2-common.h>
27 #include <media/v4l2-ctrls.h>
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-event.h>
30 #include <media/v4l2-ioctl.h>
31 #include <media/v4l2-ctrls.h>
32 #include <media/v4l2-fh.h>
33 #include <media/v4l2-event.h>
34 #include <media/v4l2-common.h>
35 #include <media/videobuf2-core.h>
36 #include <media/videobuf2-dma-contig.h>
37 #include "cal_regs.h"
38
39 #define CAL_MODULE_NAME "cal"
40
41 #define MAX_WIDTH 1920
42 #define MAX_HEIGHT 1200
43
44 #define CAL_VERSION "0.1.0"
45
46 MODULE_DESCRIPTION("TI CAL driver");
47 MODULE_AUTHOR("Benoit Parrot, <bparrot@ti.com>");
48 MODULE_LICENSE("GPL v2");
49 MODULE_VERSION(CAL_VERSION);
50
51 static unsigned video_nr = -1;
52 module_param(video_nr, uint, 0644);
53 MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
54
55 static unsigned debug;
56 module_param(debug, uint, 0644);
57 MODULE_PARM_DESC(debug, "activates debug info");
58
59 /* timeperframe: min/max and default */
60 static const struct v4l2_fract
61 tpf_default = {.numerator = 1001, .denominator = 30000};
62
63 #define cal_dbg(level, caldev, fmt, arg...) \
64 v4l2_dbg(level, debug, &caldev->v4l2_dev, fmt, ##arg)
65 #define cal_info(caldev, fmt, arg...) \
66 v4l2_info(&caldev->v4l2_dev, fmt, ##arg)
67 #define cal_err(caldev, fmt, arg...) \
68 v4l2_err(&caldev->v4l2_dev, fmt, ##arg)
69
70 #define ctx_dbg(level, ctx, fmt, arg...) \
71 v4l2_dbg(level, debug, &ctx->v4l2_dev, fmt, ##arg)
72 #define ctx_info(ctx, fmt, arg...) \
73 v4l2_info(&ctx->v4l2_dev, fmt, ##arg)
74 #define ctx_err(ctx, fmt, arg...) \
75 v4l2_err(&ctx->v4l2_dev, fmt, ##arg)
76
77 #define CAL_NUM_INPUT 1
78 #define CAL_NUM_CONTEXT 2
79
80 #define bytes_per_line(pixel, bpp) (ALIGN(pixel * bpp, 16))
81
82 #define reg_read(dev, offset) ioread32(dev->base + offset)
83 #define reg_write(dev, offset, val) iowrite32(val, dev->base + offset)
84
85 #define reg_read_field(dev, offset, mask) get_field(reg_read(dev, offset), \
86 mask)
87 #define reg_write_field(dev, offset, field, mask) { \
88 u32 val = reg_read(dev, offset); \
89 set_field(&val, field, mask); \
90 reg_write(dev, offset, val); }
91
92 /* ------------------------------------------------------------------
93 * Basic structures
94 * ------------------------------------------------------------------
95 */
96
97 struct cal_fmt {
98 u32 fourcc;
99 u32 code;
100 u8 depth;
101 };
102
103 static struct cal_fmt cal_formats[] = {
104 {
105 .fourcc = V4L2_PIX_FMT_YUYV,
106 .code = MEDIA_BUS_FMT_YUYV8_2X8,
107 .depth = 16,
108 }, {
109 .fourcc = V4L2_PIX_FMT_UYVY,
110 .code = MEDIA_BUS_FMT_UYVY8_2X8,
111 .depth = 16,
112 }, {
113 .fourcc = V4L2_PIX_FMT_YVYU,
114 .code = MEDIA_BUS_FMT_YVYU8_2X8,
115 .depth = 16,
116 }, {
117 .fourcc = V4L2_PIX_FMT_VYUY,
118 .code = MEDIA_BUS_FMT_VYUY8_2X8,
119 .depth = 16,
120 }, {
121 .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
122 .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
123 .depth = 16,
124 }, {
125 .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
126 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
127 .depth = 16,
128 }, {
129 .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
130 .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
131 .depth = 16,
132 }, {
133 .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
134 .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
135 .depth = 16,
136 }, {
137 .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
138 .code = MEDIA_BUS_FMT_RGB888_2X12_LE,
139 .depth = 24,
140 }, {
141 .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
142 .code = MEDIA_BUS_FMT_RGB888_2X12_BE,
143 .depth = 24,
144 }, {
145 .fourcc = V4L2_PIX_FMT_RGB32, /* argb */
146 .code = MEDIA_BUS_FMT_ARGB8888_1X32,
147 .depth = 32,
148 }, {
149 .fourcc = V4L2_PIX_FMT_SBGGR8,
150 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
151 .depth = 8,
152 }, {
153 .fourcc = V4L2_PIX_FMT_SGBRG8,
154 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
155 .depth = 8,
156 }, {
157 .fourcc = V4L2_PIX_FMT_SGRBG8,
158 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
159 .depth = 8,
160 }, {
161 .fourcc = V4L2_PIX_FMT_SRGGB8,
162 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
163 .depth = 8,
164 }, {
165 .fourcc = V4L2_PIX_FMT_SBGGR10,
166 .code = MEDIA_BUS_FMT_SBGGR10_1X10,
167 .depth = 16,
168 }, {
169 .fourcc = V4L2_PIX_FMT_SGBRG10,
170 .code = MEDIA_BUS_FMT_SGBRG10_1X10,
171 .depth = 16,
172 }, {
173 .fourcc = V4L2_PIX_FMT_SGRBG10,
174 .code = MEDIA_BUS_FMT_SGRBG10_1X10,
175 .depth = 16,
176 }, {
177 .fourcc = V4L2_PIX_FMT_SRGGB10,
178 .code = MEDIA_BUS_FMT_SRGGB10_1X10,
179 .depth = 16,
180 }, {
181 .fourcc = V4L2_PIX_FMT_SBGGR12,
182 .code = MEDIA_BUS_FMT_SBGGR12_1X12,
183 .depth = 16,
184 }, {
185 .fourcc = V4L2_PIX_FMT_SGBRG12,
186 .code = MEDIA_BUS_FMT_SGBRG12_1X12,
187 .depth = 16,
188 }, {
189 .fourcc = V4L2_PIX_FMT_SGRBG12,
190 .code = MEDIA_BUS_FMT_SGRBG12_1X12,
191 .depth = 16,
192 }, {
193 .fourcc = V4L2_PIX_FMT_SRGGB12,
194 .code = MEDIA_BUS_FMT_SRGGB12_1X12,
195 .depth = 16,
196 },
197 };
198
199 /* Print Four-character-code (FOURCC) */
200 static char *fourcc_to_str(u32 fmt)
201 {
202 static char code[5];
203
204 code[0] = (unsigned char)(fmt & 0xff);
205 code[1] = (unsigned char)((fmt >> 8) & 0xff);
206 code[2] = (unsigned char)((fmt >> 16) & 0xff);
207 code[3] = (unsigned char)((fmt >> 24) & 0xff);
208 code[4] = '\0';
209
210 return code;
211 }
212
213 /* buffer for one video frame */
214 struct cal_buffer {
215 /* common v4l buffer stuff -- must be first */
216 struct vb2_v4l2_buffer vb;
217 struct list_head list;
218 const struct cal_fmt *fmt;
219 };
220
221 struct cal_dmaqueue {
222 struct list_head active;
223
224 /* Counters to control fps rate */
225 int frame;
226 int ini_jiffies;
227 };
228
229 struct cm_data {
230 void __iomem *base;
231 struct resource *res;
232
233 unsigned int camerrx_control;
234
235 struct platform_device *pdev;
236 };
237
238 struct cc_data {
239 void __iomem *base;
240 struct resource *res;
241
242 struct platform_device *pdev;
243 };
244
245 /*
246 * there is one cal_dev structure in the driver, it is shared by
247 * all instances.
248 */
249 struct cal_dev {
250 int irq;
251 void __iomem *base;
252 struct resource *res;
253 struct platform_device *pdev;
254 struct v4l2_device v4l2_dev;
255
256 /* Control Module handle */
257 struct cm_data *cm;
258 /* Camera Core Module handle */
259 struct cc_data *cc[CAL_NUM_CSI2_PORTS];
260
261 struct cal_ctx *ctx[CAL_NUM_CONTEXT];
262 };
263
264 /*
265 * There is one cal_ctx structure for each camera core context.
266 */
267 struct cal_ctx {
268 struct v4l2_device v4l2_dev;
269 struct v4l2_ctrl_handler ctrl_handler;
270 struct video_device vdev;
271 struct v4l2_async_notifier notifier;
272 struct v4l2_subdev *sensor;
273 struct v4l2_of_endpoint endpoint;
274
275 struct v4l2_async_subdev asd;
276 struct v4l2_async_subdev *asd_list[1];
277
278 struct v4l2_fh fh;
279 struct cal_dev *dev;
280 struct cc_data *cc;
281
282 /* v4l2_ioctl mutex */
283 struct mutex mutex;
284 /* v4l2 buffers lock */
285 spinlock_t slock;
286
287 /* Several counters */
288 unsigned long jiffies;
289
290 struct cal_dmaqueue vidq;
291
292 /* Input Number */
293 int input;
294
295 /* video capture */
296 const struct cal_fmt *fmt;
297 /* Used to store current pixel format */
298 struct v4l2_format v_fmt;
299 /* Used to store current mbus frame format */
300 struct v4l2_mbus_framefmt m_fmt;
301
302 /* Current subdev enumerated format */
303 struct cal_fmt *active_fmt[ARRAY_SIZE(cal_formats)];
304 int num_active_fmt;
305
306 struct v4l2_fract timeperframe;
307 unsigned int sequence;
308 unsigned int external_rate;
309 struct vb2_queue vb_vidq;
310 unsigned int seq_count;
311 unsigned int csi2_port;
312 unsigned int virtual_channel;
313
314 /* Pointer pointing to current v4l2_buffer */
315 struct cal_buffer *cur_frm;
316 /* Pointer pointing to next v4l2_buffer */
317 struct cal_buffer *next_frm;
318 };
319
320 static const struct cal_fmt *find_format_by_pix(struct cal_ctx *ctx,
321 u32 pixelformat)
322 {
323 const struct cal_fmt *fmt;
324 unsigned int k;
325
326 for (k = 0; k < ctx->num_active_fmt; k++) {
327 fmt = ctx->active_fmt[k];
328 if (fmt->fourcc == pixelformat)
329 return fmt;
330 }
331
332 return NULL;
333 }
334
335 static const struct cal_fmt *find_format_by_code(struct cal_ctx *ctx,
336 u32 code)
337 {
338 const struct cal_fmt *fmt;
339 unsigned int k;
340
341 for (k = 0; k < ctx->num_active_fmt; k++) {
342 fmt = ctx->active_fmt[k];
343 if (fmt->code == code)
344 return fmt;
345 }
346
347 return NULL;
348 }
349
350 static inline struct cal_ctx *notifier_to_ctx(struct v4l2_async_notifier *n)
351 {
352 return container_of(n, struct cal_ctx, notifier);
353 }
354
355 static inline int get_field(u32 value, u32 mask)
356 {
357 return (value & mask) >> __ffs(mask);
358 }
359
360 static inline void set_field(u32 *valp, u32 field, u32 mask)
361 {
362 u32 val = *valp;
363
364 val &= ~mask;
365 val |= (field << __ffs(mask)) & mask;
366 *valp = val;
367 }
368
369 /*
370 * Control Module block access
371 */
372 static struct cm_data *cm_create(struct cal_dev *dev)
373 {
374 struct platform_device *pdev = dev->pdev;
375 struct cm_data *cm;
376
377 cm = devm_kzalloc(&pdev->dev, sizeof(*cm), GFP_KERNEL);
378 if (!cm)
379 return ERR_PTR(-ENOMEM);
380
381 cm->res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
382 "camerrx_control");
383 cm->base = devm_ioremap_resource(&pdev->dev, cm->res);
384 if (IS_ERR(cm->base)) {
385 cal_err(dev, "failed to ioremap\n");
386 return ERR_CAST(cm->base);
387 }
388
389 cal_dbg(1, dev, "ioresource %s at %pa - %pa\n",
390 cm->res->name, &cm->res->start, &cm->res->end);
391
392 return cm;
393 }
394
395 static void camerarx_phy_enable(struct cal_ctx *ctx)
396 {
397 u32 val;
398
399 if (!ctx->dev->cm->base) {
400 ctx_err(ctx, "cm not mapped\n");
401 return;
402 }
403
404 val = reg_read(ctx->dev->cm, CM_CTRL_CORE_CAMERRX_CONTROL);
405 if (ctx->csi2_port == 1) {
406 set_field(&val, 1, CM_CAMERRX_CTRL_CSI0_CTRLCLKEN_MASK);
407 set_field(&val, 0, CM_CAMERRX_CTRL_CSI0_CAMMODE_MASK);
408 /* enable all lanes by default */
409 set_field(&val, 0xf, CM_CAMERRX_CTRL_CSI0_LANEENABLE_MASK);
410 set_field(&val, 1, CM_CAMERRX_CTRL_CSI0_MODE_MASK);
411 } else if (ctx->csi2_port == 2) {
412 set_field(&val, 1, CM_CAMERRX_CTRL_CSI1_CTRLCLKEN_MASK);
413 set_field(&val, 0, CM_CAMERRX_CTRL_CSI1_CAMMODE_MASK);
414 /* enable all lanes by default */
415 set_field(&val, 0x3, CM_CAMERRX_CTRL_CSI1_LANEENABLE_MASK);
416 set_field(&val, 1, CM_CAMERRX_CTRL_CSI1_MODE_MASK);
417 }
418 reg_write(ctx->dev->cm, CM_CTRL_CORE_CAMERRX_CONTROL, val);
419 }
420
421 static void camerarx_phy_disable(struct cal_ctx *ctx)
422 {
423 u32 val;
424
425 if (!ctx->dev->cm->base) {
426 ctx_err(ctx, "cm not mapped\n");
427 return;
428 }
429
430 val = reg_read(ctx->dev->cm, CM_CTRL_CORE_CAMERRX_CONTROL);
431 if (ctx->csi2_port == 1)
432 set_field(&val, 0x0, CM_CAMERRX_CTRL_CSI0_CTRLCLKEN_MASK);
433 else if (ctx->csi2_port == 2)
434 set_field(&val, 0x0, CM_CAMERRX_CTRL_CSI1_CTRLCLKEN_MASK);
435 reg_write(ctx->dev->cm, CM_CTRL_CORE_CAMERRX_CONTROL, val);
436 }
437
438 /*
439 * Camera Instance access block
440 */
441 static struct cc_data *cc_create(struct cal_dev *dev, unsigned int core)
442 {
443 struct platform_device *pdev = dev->pdev;
444 struct cc_data *cc;
445
446 cc = devm_kzalloc(&pdev->dev, sizeof(*cc), GFP_KERNEL);
447 if (!cc)
448 return ERR_PTR(-ENOMEM);
449
450 cc->res = platform_get_resource_byname(pdev,
451 IORESOURCE_MEM,
452 (core == 0) ?
453 "cal_rx_core0" :
454 "cal_rx_core1");
455 cc->base = devm_ioremap_resource(&pdev->dev, cc->res);
456 if (IS_ERR(cc->base)) {
457 cal_err(dev, "failed to ioremap\n");
458 return ERR_CAST(cc->base);
459 }
460
461 cal_dbg(1, dev, "ioresource %s at %pa - %pa\n",
462 cc->res->name, &cc->res->start, &cc->res->end);
463
464 return cc;
465 }
466
467 /*
468 * Get Revision and HW info
469 */
470 static void cal_get_hwinfo(struct cal_dev *dev)
471 {
472 u32 revision = 0;
473 u32 hwinfo = 0;
474
475 revision = reg_read(dev, CAL_HL_REVISION);
476 cal_dbg(3, dev, "CAL_HL_REVISION = 0x%08x (expecting 0x40000200)\n",
477 revision);
478
479 hwinfo = reg_read(dev, CAL_HL_HWINFO);
480 cal_dbg(3, dev, "CAL_HL_HWINFO = 0x%08x (expecting 0xA3C90469)\n",
481 hwinfo);
482 }
483
484 static inline int cal_runtime_get(struct cal_dev *dev)
485 {
486 int r;
487
488 r = pm_runtime_get_sync(&dev->pdev->dev);
489
490 return r;
491 }
492
493 static inline void cal_runtime_put(struct cal_dev *dev)
494 {
495 pm_runtime_put_sync(&dev->pdev->dev);
496 }
497
498 static void cal_quickdump_regs(struct cal_dev *dev)
499 {
500 cal_info(dev, "CAL Registers @ 0x%pa:\n", &dev->res->start);
501 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
502 (__force const void *)dev->base,
503 resource_size(dev->res), false);
504
505 if (dev->ctx[0]) {
506 cal_info(dev, "CSI2 Core 0 Registers @ %pa:\n",
507 &dev->ctx[0]->cc->res->start);
508 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
509 (__force const void *)dev->ctx[0]->cc->base,
510 resource_size(dev->ctx[0]->cc->res),
511 false);
512 }
513
514 if (dev->ctx[1]) {
515 cal_info(dev, "CSI2 Core 1 Registers @ %pa:\n",
516 &dev->ctx[1]->cc->res->start);
517 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
518 (__force const void *)dev->ctx[1]->cc->base,
519 resource_size(dev->ctx[1]->cc->res),
520 false);
521 }
522
523 cal_info(dev, "CAMERRX_Control Registers @ %pa:\n",
524 &dev->cm->res->start);
525 print_hex_dump(KERN_INFO, "", DUMP_PREFIX_OFFSET, 16, 4,
526 (__force const void *)dev->cm->base,
527 resource_size(dev->cm->res), false);
528 }
529
530 /*
531 * Enable the expected IRQ sources
532 */
533 static void enable_irqs(struct cal_ctx *ctx)
534 {
535 /* Enable IRQ_WDMA_END 0/1 */
536 reg_write_field(ctx->dev,
537 CAL_HL_IRQENABLE_SET(2),
538 CAL_HL_IRQ_ENABLE,
539 CAL_HL_IRQ_MASK(ctx->csi2_port));
540 /* Enable IRQ_WDMA_START 0/1 */
541 reg_write_field(ctx->dev,
542 CAL_HL_IRQENABLE_SET(3),
543 CAL_HL_IRQ_ENABLE,
544 CAL_HL_IRQ_MASK(ctx->csi2_port));
545 /* Todo: Add VC_IRQ and CSI2_COMPLEXIO_IRQ handling */
546 reg_write(ctx->dev, CAL_CSI2_VC_IRQENABLE(1), 0xFF000000);
547 }
548
549 static void disable_irqs(struct cal_ctx *ctx)
550 {
551 /* Disable IRQ_WDMA_END 0/1 */
552 reg_write_field(ctx->dev,
553 CAL_HL_IRQENABLE_CLR(2),
554 CAL_HL_IRQ_CLEAR,
555 CAL_HL_IRQ_MASK(ctx->csi2_port));
556 /* Disable IRQ_WDMA_START 0/1 */
557 reg_write_field(ctx->dev,
558 CAL_HL_IRQENABLE_CLR(3),
559 CAL_HL_IRQ_CLEAR,
560 CAL_HL_IRQ_MASK(ctx->csi2_port));
561 /* Todo: Add VC_IRQ and CSI2_COMPLEXIO_IRQ handling */
562 reg_write(ctx->dev, CAL_CSI2_VC_IRQENABLE(1), 0);
563 }
564
565 static void csi2_init(struct cal_ctx *ctx)
566 {
567 int i;
568 u32 val;
569
570 val = reg_read(ctx->dev, CAL_CSI2_TIMING(ctx->csi2_port));
571 set_field(&val, CAL_GEN_ENABLE,
572 CAL_CSI2_TIMING_FORCE_RX_MODE_IO1_MASK);
573 set_field(&val, CAL_GEN_ENABLE,
574 CAL_CSI2_TIMING_STOP_STATE_X16_IO1_MASK);
575 set_field(&val, CAL_GEN_DISABLE,
576 CAL_CSI2_TIMING_STOP_STATE_X4_IO1_MASK);
577 set_field(&val, 407, CAL_CSI2_TIMING_STOP_STATE_COUNTER_IO1_MASK);
578 reg_write(ctx->dev, CAL_CSI2_TIMING(ctx->csi2_port), val);
579 ctx_dbg(3, ctx, "CAL_CSI2_TIMING(%d) = 0x%08x\n", ctx->csi2_port,
580 reg_read(ctx->dev, CAL_CSI2_TIMING(ctx->csi2_port)));
581
582 val = reg_read(ctx->dev, CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port));
583 set_field(&val, CAL_CSI2_COMPLEXIO_CFG_RESET_CTRL_OPERATIONAL,
584 CAL_CSI2_COMPLEXIO_CFG_RESET_CTRL_MASK);
585 set_field(&val, CAL_CSI2_COMPLEXIO_CFG_PWR_CMD_STATE_ON,
586 CAL_CSI2_COMPLEXIO_CFG_PWR_CMD_MASK);
587 reg_write(ctx->dev, CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port), val);
588 for (i = 0; i < 10; i++) {
589 if (reg_read_field(ctx->dev,
590 CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port),
591 CAL_CSI2_COMPLEXIO_CFG_PWR_STATUS_MASK) ==
592 CAL_CSI2_COMPLEXIO_CFG_PWR_STATUS_STATE_ON)
593 break;
594 usleep_range(1000, 1100);
595 }
596 ctx_dbg(3, ctx, "CAL_CSI2_COMPLEXIO_CFG(%d) = 0x%08x\n", ctx->csi2_port,
597 reg_read(ctx->dev, CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port)));
598
599 val = reg_read(ctx->dev, CAL_CTRL);
600 set_field(&val, CAL_CTRL_BURSTSIZE_BURST128, CAL_CTRL_BURSTSIZE_MASK);
601 set_field(&val, 0xF, CAL_CTRL_TAGCNT_MASK);
602 set_field(&val, CAL_CTRL_POSTED_WRITES_NONPOSTED,
603 CAL_CTRL_POSTED_WRITES_MASK);
604 set_field(&val, 0xFF, CAL_CTRL_MFLAGL_MASK);
605 set_field(&val, 0xFF, CAL_CTRL_MFLAGH_MASK);
606 reg_write(ctx->dev, CAL_CTRL, val);
607 ctx_dbg(3, ctx, "CAL_CTRL = 0x%08x\n", reg_read(ctx->dev, CAL_CTRL));
608 }
609
610 static void csi2_lane_config(struct cal_ctx *ctx)
611 {
612 u32 val = reg_read(ctx->dev, CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port));
613 u32 lane_mask = CAL_CSI2_COMPLEXIO_CFG_CLOCK_POSITION_MASK;
614 u32 polarity_mask = CAL_CSI2_COMPLEXIO_CFG_CLOCK_POL_MASK;
615 struct v4l2_of_bus_mipi_csi2 *mipi_csi2 = &ctx->endpoint.bus.mipi_csi2;
616 int lane;
617
618 set_field(&val, mipi_csi2->clock_lane + 1, lane_mask);
619 set_field(&val, mipi_csi2->lane_polarities[0], polarity_mask);
620 for (lane = 0; lane < mipi_csi2->num_data_lanes; lane++) {
621 /*
622 * Every lane are one nibble apart starting with the
623 * clock followed by the data lanes so shift masks by 4.
624 */
625 lane_mask <<= 4;
626 polarity_mask <<= 4;
627 set_field(&val, mipi_csi2->data_lanes[lane] + 1, lane_mask);
628 set_field(&val, mipi_csi2->lane_polarities[lane + 1],
629 polarity_mask);
630 }
631
632 reg_write(ctx->dev, CAL_CSI2_COMPLEXIO_CFG(ctx->csi2_port), val);
633 ctx_dbg(3, ctx, "CAL_CSI2_COMPLEXIO_CFG(%d) = 0x%08x\n",
634 ctx->csi2_port, val);
635 }
636
637 static void csi2_ppi_enable(struct cal_ctx *ctx)
638 {
639 reg_write_field(ctx->dev, CAL_CSI2_PPI_CTRL(ctx->csi2_port),
640 CAL_GEN_ENABLE, CAL_CSI2_PPI_CTRL_IF_EN_MASK);
641 }
642
643 static void csi2_ppi_disable(struct cal_ctx *ctx)
644 {
645 reg_write_field(ctx->dev, CAL_CSI2_PPI_CTRL(ctx->csi2_port),
646 CAL_GEN_DISABLE, CAL_CSI2_PPI_CTRL_IF_EN_MASK);
647 }
648
649 static void csi2_ctx_config(struct cal_ctx *ctx)
650 {
651 u32 val;
652
653 val = reg_read(ctx->dev, CAL_CSI2_CTX0(ctx->csi2_port));
654 set_field(&val, ctx->csi2_port, CAL_CSI2_CTX_CPORT_MASK);
655 /*
656 * DT type: MIPI CSI-2 Specs
657 * 0x1: All - DT filter is disabled
658 * 0x24: RGB888 1 pixel = 3 bytes
659 * 0x2B: RAW10 4 pixels = 5 bytes
660 * 0x2A: RAW8 1 pixel = 1 byte
661 * 0x1E: YUV422 2 pixels = 4 bytes
662 */
663 set_field(&val, 0x1, CAL_CSI2_CTX_DT_MASK);
664 /* Virtual Channel from the CSI2 sensor usually 0! */
665 set_field(&val, ctx->virtual_channel, CAL_CSI2_CTX_VC_MASK);
666 /* NUM_LINES_PER_FRAME => 0 means auto detect */
667 set_field(&val, 0, CAL_CSI2_CTX_LINES_MASK);
668 set_field(&val, CAL_CSI2_CTX_ATT_PIX, CAL_CSI2_CTX_ATT_MASK);
669 set_field(&val, CAL_CSI2_CTX_PACK_MODE_LINE,
670 CAL_CSI2_CTX_PACK_MODE_MASK);
671 reg_write(ctx->dev, CAL_CSI2_CTX0(ctx->csi2_port), val);
672 ctx_dbg(3, ctx, "CAL_CSI2_CTX0(%d) = 0x%08x\n", ctx->csi2_port,
673 reg_read(ctx->dev, CAL_CSI2_CTX0(ctx->csi2_port)));
674 }
675
676 static void pix_proc_config(struct cal_ctx *ctx)
677 {
678 u32 val;
679
680 val = reg_read(ctx->dev, CAL_PIX_PROC(ctx->csi2_port));
681 set_field(&val, CAL_PIX_PROC_EXTRACT_B8, CAL_PIX_PROC_EXTRACT_MASK);
682 set_field(&val, CAL_PIX_PROC_DPCMD_BYPASS, CAL_PIX_PROC_DPCMD_MASK);
683 set_field(&val, CAL_PIX_PROC_DPCME_BYPASS, CAL_PIX_PROC_DPCME_MASK);
684 set_field(&val, CAL_PIX_PROC_PACK_B8, CAL_PIX_PROC_PACK_MASK);
685 set_field(&val, ctx->csi2_port, CAL_PIX_PROC_CPORT_MASK);
686 set_field(&val, CAL_GEN_ENABLE, CAL_PIX_PROC_EN_MASK);
687 reg_write(ctx->dev, CAL_PIX_PROC(ctx->csi2_port), val);
688 ctx_dbg(3, ctx, "CAL_PIX_PROC(%d) = 0x%08x\n", ctx->csi2_port,
689 reg_read(ctx->dev, CAL_PIX_PROC(ctx->csi2_port)));
690 }
691
692 static void cal_wr_dma_config(struct cal_ctx *ctx,
693 unsigned int width)
694 {
695 u32 val;
696
697 val = reg_read(ctx->dev, CAL_WR_DMA_CTRL(ctx->csi2_port));
698 set_field(&val, ctx->csi2_port, CAL_WR_DMA_CTRL_CPORT_MASK);
699 set_field(&val, CAL_WR_DMA_CTRL_DTAG_PIX_DAT,
700 CAL_WR_DMA_CTRL_DTAG_MASK);
701 set_field(&val, CAL_WR_DMA_CTRL_MODE_CONST,
702 CAL_WR_DMA_CTRL_MODE_MASK);
703 set_field(&val, CAL_WR_DMA_CTRL_PATTERN_LINEAR,
704 CAL_WR_DMA_CTRL_PATTERN_MASK);
705 set_field(&val, CAL_GEN_ENABLE, CAL_WR_DMA_CTRL_STALL_RD_MASK);
706 reg_write(ctx->dev, CAL_WR_DMA_CTRL(ctx->csi2_port), val);
707 ctx_dbg(3, ctx, "CAL_WR_DMA_CTRL(%d) = 0x%08x\n", ctx->csi2_port,
708 reg_read(ctx->dev, CAL_WR_DMA_CTRL(ctx->csi2_port)));
709
710 /*
711 * width/16 not sure but giving it a whirl.
712 * zero does not work right
713 */
714 reg_write_field(ctx->dev,
715 CAL_WR_DMA_OFST(ctx->csi2_port),
716 (width / 16),
717 CAL_WR_DMA_OFST_MASK);
718 ctx_dbg(3, ctx, "CAL_WR_DMA_OFST(%d) = 0x%08x\n", ctx->csi2_port,
719 reg_read(ctx->dev, CAL_WR_DMA_OFST(ctx->csi2_port)));
720
721 val = reg_read(ctx->dev, CAL_WR_DMA_XSIZE(ctx->csi2_port));
722 /* 64 bit word means no skipping */
723 set_field(&val, 0, CAL_WR_DMA_XSIZE_XSKIP_MASK);
724 /*
725 * (width*8)/64 this should be size of an entire line
726 * in 64bit word but 0 means all data until the end
727 * is detected automagically
728 */
729 set_field(&val, (width / 8), CAL_WR_DMA_XSIZE_MASK);
730 reg_write(ctx->dev, CAL_WR_DMA_XSIZE(ctx->csi2_port), val);
731 ctx_dbg(3, ctx, "CAL_WR_DMA_XSIZE(%d) = 0x%08x\n", ctx->csi2_port,
732 reg_read(ctx->dev, CAL_WR_DMA_XSIZE(ctx->csi2_port)));
733 }
734
735 static void cal_wr_dma_addr(struct cal_ctx *ctx, unsigned int dmaaddr)
736 {
737 reg_write(ctx->dev, CAL_WR_DMA_ADDR(ctx->csi2_port), dmaaddr);
738 }
739
740 /*
741 * TCLK values are OK at their reset values
742 */
743 #define TCLK_TERM 0
744 #define TCLK_MISS 1
745 #define TCLK_SETTLE 14
746 #define THS_SETTLE 15
747
748 static void csi2_phy_config(struct cal_ctx *ctx)
749 {
750 unsigned int reg0, reg1;
751 unsigned int ths_term, ths_settle;
752 unsigned int ddrclkperiod_us;
753
754 /*
755 * THS_TERM: Programmed value = floor(20 ns/DDRClk period) - 2.
756 */
757 ddrclkperiod_us = ctx->external_rate / 2000000;
758 ddrclkperiod_us = 1000000 / ddrclkperiod_us;
759 ctx_dbg(1, ctx, "ddrclkperiod_us: %d\n", ddrclkperiod_us);
760
761 ths_term = 20000 / ddrclkperiod_us;
762 ths_term = (ths_term >= 2) ? ths_term - 2 : ths_term;
763 ctx_dbg(1, ctx, "ths_term: %d (0x%02x)\n", ths_term, ths_term);
764
765 /*
766 * THS_SETTLE: Programmed value = floor(176.3 ns/CtrlClk period) - 1.
767 * Since CtrlClk is fixed at 96Mhz then we get
768 * ths_settle = floor(176.3 / 10.416) - 1 = 15
769 * If we ever switch to a dynamic clock then this code might be useful
770 *
771 * unsigned int ctrlclkperiod_us;
772 * ctrlclkperiod_us = 96000000 / 1000000;
773 * ctrlclkperiod_us = 1000000 / ctrlclkperiod_us;
774 * ctx_dbg(1, ctx, "ctrlclkperiod_us: %d\n", ctrlclkperiod_us);
775
776 * ths_settle = 176300 / ctrlclkperiod_us;
777 * ths_settle = (ths_settle > 1) ? ths_settle - 1 : ths_settle;
778 */
779
780 ths_settle = THS_SETTLE;
781 ctx_dbg(1, ctx, "ths_settle: %d (0x%02x)\n", ths_settle, ths_settle);
782
783 reg0 = reg_read(ctx->cc, CAL_CSI2_PHY_REG0);
784 set_field(&reg0, CAL_CSI2_PHY_REG0_HSCLOCKCONFIG_DISABLE,
785 CAL_CSI2_PHY_REG0_HSCLOCKCONFIG_MASK);
786 set_field(&reg0, ths_term, CAL_CSI2_PHY_REG0_THS_TERM_MASK);
787 set_field(&reg0, ths_settle, CAL_CSI2_PHY_REG0_THS_SETTLE_MASK);
788
789 ctx_dbg(1, ctx, "CSI2_%d_REG0 = 0x%08x\n", (ctx->csi2_port - 1), reg0);
790 reg_write(ctx->cc, CAL_CSI2_PHY_REG0, reg0);
791
792 reg1 = reg_read(ctx->cc, CAL_CSI2_PHY_REG1);
793 set_field(&reg1, TCLK_TERM, CAL_CSI2_PHY_REG1_TCLK_TERM_MASK);
794 set_field(&reg1, 0xb8, CAL_CSI2_PHY_REG1_DPHY_HS_SYNC_PATTERN_MASK);
795 set_field(&reg1, TCLK_MISS, CAL_CSI2_PHY_REG1_CTRLCLK_DIV_FACTOR_MASK);
796 set_field(&reg1, TCLK_SETTLE, CAL_CSI2_PHY_REG1_TCLK_SETTLE_MASK);
797
798 ctx_dbg(1, ctx, "CSI2_%d_REG1 = 0x%08x\n", (ctx->csi2_port - 1), reg1);
799 reg_write(ctx->cc, CAL_CSI2_PHY_REG1, reg1);
800 }
801
802 static int cal_get_external_info(struct cal_ctx *ctx)
803 {
804 struct v4l2_ctrl *ctrl;
805
806 if (!ctx->sensor)
807 return -ENODEV;
808
809 ctrl = v4l2_ctrl_find(ctx->sensor->ctrl_handler, V4L2_CID_PIXEL_RATE);
810 if (!ctrl) {
811 ctx_err(ctx, "no pixel rate control in subdev: %s\n",
812 ctx->sensor->name);
813 return -EPIPE;
814 }
815
816 ctx->external_rate = v4l2_ctrl_g_ctrl_int64(ctrl);
817 ctx_dbg(3, ctx, "sensor Pixel Rate: %d\n", ctx->external_rate);
818
819 return 0;
820 }
821
822 static inline void cal_schedule_next_buffer(struct cal_ctx *ctx)
823 {
824 struct cal_dmaqueue *dma_q = &ctx->vidq;
825 struct cal_buffer *buf;
826 unsigned long addr;
827
828 buf = list_entry(dma_q->active.next, struct cal_buffer, list);
829 ctx->next_frm = buf;
830 list_del(&buf->list);
831
832 addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
833 cal_wr_dma_addr(ctx, addr);
834 }
835
836 static inline void cal_process_buffer_complete(struct cal_ctx *ctx)
837 {
838 ctx->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
839 ctx->cur_frm->vb.field = ctx->m_fmt.field;
840 ctx->cur_frm->vb.sequence = ctx->sequence++;
841
842 vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
843 ctx->cur_frm = ctx->next_frm;
844 }
845
846 #define isvcirqset(irq, vc, ff) (irq & \
847 (CAL_CSI2_VC_IRQENABLE_ ##ff ##_IRQ_##vc ##_MASK))
848
849 #define isportirqset(irq, port) (irq & CAL_HL_IRQ_MASK(port))
850
851 static irqreturn_t cal_irq(int irq_cal, void *data)
852 {
853 struct cal_dev *dev = (struct cal_dev *)data;
854 struct cal_ctx *ctx;
855 struct cal_dmaqueue *dma_q;
856 u32 irqst2, irqst3;
857
858 /* Check which DMA just finished */
859 irqst2 = reg_read(dev, CAL_HL_IRQSTATUS(2));
860 if (irqst2) {
861 /* Clear Interrupt status */
862 reg_write(dev, CAL_HL_IRQSTATUS(2), irqst2);
863
864 /* Need to check both port */
865 if (isportirqset(irqst2, 1)) {
866 ctx = dev->ctx[0];
867
868 if (ctx->cur_frm != ctx->next_frm)
869 cal_process_buffer_complete(ctx);
870 }
871
872 if (isportirqset(irqst2, 2)) {
873 ctx = dev->ctx[1];
874
875 if (ctx->cur_frm != ctx->next_frm)
876 cal_process_buffer_complete(ctx);
877 }
878 }
879
880 /* Check which DMA just started */
881 irqst3 = reg_read(dev, CAL_HL_IRQSTATUS(3));
882 if (irqst3) {
883 /* Clear Interrupt status */
884 reg_write(dev, CAL_HL_IRQSTATUS(3), irqst3);
885
886 /* Need to check both port */
887 if (isportirqset(irqst3, 1)) {
888 ctx = dev->ctx[0];
889 dma_q = &ctx->vidq;
890
891 spin_lock(&ctx->slock);
892 if (!list_empty(&dma_q->active) &&
893 ctx->cur_frm == ctx->next_frm)
894 cal_schedule_next_buffer(ctx);
895 spin_unlock(&ctx->slock);
896 }
897
898 if (isportirqset(irqst3, 2)) {
899 ctx = dev->ctx[1];
900 dma_q = &ctx->vidq;
901
902 spin_lock(&ctx->slock);
903 if (!list_empty(&dma_q->active) &&
904 ctx->cur_frm == ctx->next_frm)
905 cal_schedule_next_buffer(ctx);
906 spin_unlock(&ctx->slock);
907 }
908 }
909
910 return IRQ_HANDLED;
911 }
912
913 /*
914 * video ioctls
915 */
916 static int cal_querycap(struct file *file, void *priv,
917 struct v4l2_capability *cap)
918 {
919 struct cal_ctx *ctx = video_drvdata(file);
920
921 strlcpy(cap->driver, CAL_MODULE_NAME, sizeof(cap->driver));
922 strlcpy(cap->card, CAL_MODULE_NAME, sizeof(cap->card));
923
924 snprintf(cap->bus_info, sizeof(cap->bus_info),
925 "platform:%s", ctx->v4l2_dev.name);
926 cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
927 V4L2_CAP_READWRITE;
928 cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
929 return 0;
930 }
931
932 static int cal_enum_fmt_vid_cap(struct file *file, void *priv,
933 struct v4l2_fmtdesc *f)
934 {
935 struct cal_ctx *ctx = video_drvdata(file);
936 const struct cal_fmt *fmt = NULL;
937
938 if (f->index >= ctx->num_active_fmt)
939 return -EINVAL;
940
941 fmt = ctx->active_fmt[f->index];
942
943 f->pixelformat = fmt->fourcc;
944 f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
945 return 0;
946 }
947
948 static int __subdev_get_format(struct cal_ctx *ctx,
949 struct v4l2_mbus_framefmt *fmt)
950 {
951 struct v4l2_subdev_format sd_fmt;
952 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
953 int ret;
954
955 sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
956 sd_fmt.pad = 0;
957
958 ret = v4l2_subdev_call(ctx->sensor, pad, get_fmt, NULL, &sd_fmt);
959 if (ret)
960 return ret;
961
962 *fmt = *mbus_fmt;
963
964 ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__,
965 fmt->width, fmt->height, fmt->code);
966
967 return 0;
968 }
969
970 static int __subdev_set_format(struct cal_ctx *ctx,
971 struct v4l2_mbus_framefmt *fmt)
972 {
973 struct v4l2_subdev_format sd_fmt;
974 struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
975 int ret;
976
977 sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
978 sd_fmt.pad = 0;
979 *mbus_fmt = *fmt;
980
981 ret = v4l2_subdev_call(ctx->sensor, pad, set_fmt, NULL, &sd_fmt);
982 if (ret)
983 return ret;
984
985 ctx_dbg(1, ctx, "%s %dx%d code:%04X\n", __func__,
986 fmt->width, fmt->height, fmt->code);
987
988 return 0;
989 }
990
991 static int cal_calc_format_size(struct cal_ctx *ctx,
992 const struct cal_fmt *fmt,
993 struct v4l2_format *f)
994 {
995 if (!fmt) {
996 ctx_dbg(3, ctx, "No cal_fmt provided!\n");
997 return -EINVAL;
998 }
999
1000 v4l_bound_align_image(&f->fmt.pix.width, 48, MAX_WIDTH, 2,
1001 &f->fmt.pix.height, 32, MAX_HEIGHT, 0, 0);
1002 f->fmt.pix.bytesperline = bytes_per_line(f->fmt.pix.width,
1003 fmt->depth >> 3);
1004 f->fmt.pix.sizeimage = f->fmt.pix.height *
1005 f->fmt.pix.bytesperline;
1006
1007 ctx_dbg(3, ctx, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n",
1008 __func__, fourcc_to_str(f->fmt.pix.pixelformat),
1009 f->fmt.pix.width, f->fmt.pix.height,
1010 f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
1011
1012 return 0;
1013 }
1014
1015 static int cal_g_fmt_vid_cap(struct file *file, void *priv,
1016 struct v4l2_format *f)
1017 {
1018 struct cal_ctx *ctx = video_drvdata(file);
1019
1020 *f = ctx->v_fmt;
1021
1022 return 0;
1023 }
1024
1025 static int cal_try_fmt_vid_cap(struct file *file, void *priv,
1026 struct v4l2_format *f)
1027 {
1028 struct cal_ctx *ctx = video_drvdata(file);
1029 const struct cal_fmt *fmt;
1030 struct v4l2_subdev_frame_size_enum fse;
1031 int ret, found;
1032
1033 fmt = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
1034 if (!fmt) {
1035 ctx_dbg(3, ctx, "Fourcc format (0x%08x) not found.\n",
1036 f->fmt.pix.pixelformat);
1037
1038 /* Just get the first one enumerated */
1039 fmt = ctx->active_fmt[0];
1040 f->fmt.pix.pixelformat = fmt->fourcc;
1041 }
1042
1043 f->fmt.pix.field = ctx->v_fmt.fmt.pix.field;
1044
1045 /* check for/find a valid width/height */
1046 ret = 0;
1047 found = false;
1048 fse.pad = 0;
1049 fse.code = fmt->code;
1050 fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
1051 for (fse.index = 0; ; fse.index++) {
1052 ret = v4l2_subdev_call(ctx->sensor, pad, enum_frame_size,
1053 NULL, &fse);
1054 if (ret)
1055 break;
1056
1057 if ((f->fmt.pix.width == fse.max_width) &&
1058 (f->fmt.pix.height == fse.max_height)) {
1059 found = true;
1060 break;
1061 } else if ((f->fmt.pix.width >= fse.min_width) &&
1062 (f->fmt.pix.width <= fse.max_width) &&
1063 (f->fmt.pix.height >= fse.min_height) &&
1064 (f->fmt.pix.height <= fse.max_height)) {
1065 found = true;
1066 break;
1067 }
1068 }
1069
1070 if (!found) {
1071 /* use existing values as default */
1072 f->fmt.pix.width = ctx->v_fmt.fmt.pix.width;
1073 f->fmt.pix.height = ctx->v_fmt.fmt.pix.height;
1074 }
1075
1076 /*
1077 * Use current colorspace for now, it will get
1078 * updated properly during s_fmt
1079 */
1080 f->fmt.pix.colorspace = ctx->v_fmt.fmt.pix.colorspace;
1081 return cal_calc_format_size(ctx, fmt, f);
1082 }
1083
1084 static int cal_s_fmt_vid_cap(struct file *file, void *priv,
1085 struct v4l2_format *f)
1086 {
1087 struct cal_ctx *ctx = video_drvdata(file);
1088 struct vb2_queue *q = &ctx->vb_vidq;
1089 const struct cal_fmt *fmt;
1090 struct v4l2_mbus_framefmt mbus_fmt;
1091 int ret;
1092
1093 if (vb2_is_busy(q)) {
1094 ctx_dbg(3, ctx, "%s device busy\n", __func__);
1095 return -EBUSY;
1096 }
1097
1098 ret = cal_try_fmt_vid_cap(file, priv, f);
1099 if (ret < 0)
1100 return ret;
1101
1102 fmt = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
1103
1104 v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
1105
1106 ret = __subdev_set_format(ctx, &mbus_fmt);
1107 if (ret)
1108 return ret;
1109
1110 /* Just double check nothing has gone wrong */
1111 if (mbus_fmt.code != fmt->code) {
1112 ctx_dbg(3, ctx,
1113 "%s subdev changed format on us, this should not happen\n",
1114 __func__);
1115 return -EINVAL;
1116 }
1117
1118 v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt);
1119 ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1120 ctx->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
1121 cal_calc_format_size(ctx, fmt, &ctx->v_fmt);
1122 ctx->fmt = fmt;
1123 ctx->m_fmt = mbus_fmt;
1124 *f = ctx->v_fmt;
1125
1126 return 0;
1127 }
1128
1129 static int cal_enum_framesizes(struct file *file, void *fh,
1130 struct v4l2_frmsizeenum *fsize)
1131 {
1132 struct cal_ctx *ctx = video_drvdata(file);
1133 const struct cal_fmt *fmt;
1134 struct v4l2_subdev_frame_size_enum fse;
1135 int ret;
1136
1137 /* check for valid format */
1138 fmt = find_format_by_pix(ctx, fsize->pixel_format);
1139 if (!fmt) {
1140 ctx_dbg(3, ctx, "Invalid pixel code: %x\n",
1141 fsize->pixel_format);
1142 return -EINVAL;
1143 }
1144
1145 fse.index = fsize->index;
1146 fse.pad = 0;
1147 fse.code = fmt->code;
1148
1149 ret = v4l2_subdev_call(ctx->sensor, pad, enum_frame_size, NULL, &fse);
1150 if (ret)
1151 return ret;
1152
1153 ctx_dbg(1, ctx, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
1154 __func__, fse.index, fse.code, fse.min_width, fse.max_width,
1155 fse.min_height, fse.max_height);
1156
1157 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
1158 fsize->discrete.width = fse.max_width;
1159 fsize->discrete.height = fse.max_height;
1160
1161 return 0;
1162 }
1163
1164 static int cal_enum_input(struct file *file, void *priv,
1165 struct v4l2_input *inp)
1166 {
1167 if (inp->index >= CAL_NUM_INPUT)
1168 return -EINVAL;
1169
1170 inp->type = V4L2_INPUT_TYPE_CAMERA;
1171 sprintf(inp->name, "Camera %u", inp->index);
1172 return 0;
1173 }
1174
1175 static int cal_g_input(struct file *file, void *priv, unsigned int *i)
1176 {
1177 struct cal_ctx *ctx = video_drvdata(file);
1178
1179 *i = ctx->input;
1180 return 0;
1181 }
1182
1183 static int cal_s_input(struct file *file, void *priv, unsigned int i)
1184 {
1185 struct cal_ctx *ctx = video_drvdata(file);
1186
1187 if (i >= CAL_NUM_INPUT)
1188 return -EINVAL;
1189
1190 ctx->input = i;
1191 return 0;
1192 }
1193
1194 /* timeperframe is arbitrary and continuous */
1195 static int cal_enum_frameintervals(struct file *file, void *priv,
1196 struct v4l2_frmivalenum *fival)
1197 {
1198 struct cal_ctx *ctx = video_drvdata(file);
1199 const struct cal_fmt *fmt;
1200 struct v4l2_subdev_frame_interval_enum fie = {
1201 .index = fival->index,
1202 .width = fival->width,
1203 .height = fival->height,
1204 .which = V4L2_SUBDEV_FORMAT_ACTIVE,
1205 };
1206 int ret;
1207
1208 fmt = find_format_by_pix(ctx, fival->pixel_format);
1209 if (!fmt)
1210 return -EINVAL;
1211
1212 fie.code = fmt->code;
1213 ret = v4l2_subdev_call(ctx->sensor, pad, enum_frame_interval,
1214 NULL, &fie);
1215 if (ret)
1216 return ret;
1217 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
1218 fival->discrete = fie.interval;
1219
1220 return 0;
1221 }
1222
1223 /*
1224 * Videobuf operations
1225 */
1226 static int cal_queue_setup(struct vb2_queue *vq,
1227 unsigned int *nbuffers, unsigned int *nplanes,
1228 unsigned int sizes[], struct device *alloc_devs[])
1229 {
1230 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
1231 unsigned size = ctx->v_fmt.fmt.pix.sizeimage;
1232
1233 if (vq->num_buffers + *nbuffers < 3)
1234 *nbuffers = 3 - vq->num_buffers;
1235
1236 if (*nplanes) {
1237 if (sizes[0] < size)
1238 return -EINVAL;
1239 size = sizes[0];
1240 }
1241
1242 *nplanes = 1;
1243 sizes[0] = size;
1244
1245 ctx_dbg(3, ctx, "nbuffers=%d, size=%d\n", *nbuffers, sizes[0]);
1246
1247 return 0;
1248 }
1249
1250 static int cal_buffer_prepare(struct vb2_buffer *vb)
1251 {
1252 struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1253 struct cal_buffer *buf = container_of(vb, struct cal_buffer,
1254 vb.vb2_buf);
1255 unsigned long size;
1256
1257 if (WARN_ON(!ctx->fmt))
1258 return -EINVAL;
1259
1260 size = ctx->v_fmt.fmt.pix.sizeimage;
1261 if (vb2_plane_size(vb, 0) < size) {
1262 ctx_err(ctx,
1263 "data will not fit into plane (%lu < %lu)\n",
1264 vb2_plane_size(vb, 0), size);
1265 return -EINVAL;
1266 }
1267
1268 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
1269 return 0;
1270 }
1271
1272 static void cal_buffer_queue(struct vb2_buffer *vb)
1273 {
1274 struct cal_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1275 struct cal_buffer *buf = container_of(vb, struct cal_buffer,
1276 vb.vb2_buf);
1277 struct cal_dmaqueue *vidq = &ctx->vidq;
1278 unsigned long flags = 0;
1279
1280 /* recheck locking */
1281 spin_lock_irqsave(&ctx->slock, flags);
1282 list_add_tail(&buf->list, &vidq->active);
1283 spin_unlock_irqrestore(&ctx->slock, flags);
1284 }
1285
1286 static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
1287 {
1288 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
1289 struct cal_dmaqueue *dma_q = &ctx->vidq;
1290 struct cal_buffer *buf, *tmp;
1291 unsigned long addr = 0;
1292 unsigned long flags;
1293 int ret;
1294
1295 spin_lock_irqsave(&ctx->slock, flags);
1296 if (list_empty(&dma_q->active)) {
1297 spin_unlock_irqrestore(&ctx->slock, flags);
1298 ctx_dbg(3, ctx, "buffer queue is empty\n");
1299 return -EIO;
1300 }
1301
1302 buf = list_entry(dma_q->active.next, struct cal_buffer, list);
1303 ctx->cur_frm = buf;
1304 ctx->next_frm = buf;
1305 list_del(&buf->list);
1306 spin_unlock_irqrestore(&ctx->slock, flags);
1307
1308 addr = vb2_dma_contig_plane_dma_addr(&ctx->cur_frm->vb.vb2_buf, 0);
1309 ctx->sequence = 0;
1310
1311 ret = cal_get_external_info(ctx);
1312 if (ret < 0)
1313 goto err;
1314
1315 cal_runtime_get(ctx->dev);
1316
1317 enable_irqs(ctx);
1318 camerarx_phy_enable(ctx);
1319 csi2_init(ctx);
1320 csi2_phy_config(ctx);
1321 csi2_lane_config(ctx);
1322 csi2_ctx_config(ctx);
1323 pix_proc_config(ctx);
1324 cal_wr_dma_config(ctx, ctx->v_fmt.fmt.pix.bytesperline);
1325 cal_wr_dma_addr(ctx, addr);
1326 csi2_ppi_enable(ctx);
1327
1328 ret = v4l2_subdev_call(ctx->sensor, video, s_stream, 1);
1329 if (ret) {
1330 ctx_err(ctx, "stream on failed in subdev\n");
1331 cal_runtime_put(ctx->dev);
1332 goto err;
1333 }
1334
1335 if (debug >= 4)
1336 cal_quickdump_regs(ctx->dev);
1337
1338 return 0;
1339
1340 err:
1341 list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
1342 list_del(&buf->list);
1343 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
1344 }
1345 return ret;
1346 }
1347
1348 static void cal_stop_streaming(struct vb2_queue *vq)
1349 {
1350 struct cal_ctx *ctx = vb2_get_drv_priv(vq);
1351 struct cal_dmaqueue *dma_q = &ctx->vidq;
1352 struct cal_buffer *buf, *tmp;
1353 unsigned long flags;
1354
1355 if (v4l2_subdev_call(ctx->sensor, video, s_stream, 0))
1356 ctx_err(ctx, "stream off failed in subdev\n");
1357
1358 csi2_ppi_disable(ctx);
1359 disable_irqs(ctx);
1360
1361 /* Release all active buffers */
1362 spin_lock_irqsave(&ctx->slock, flags);
1363 list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {
1364 list_del(&buf->list);
1365 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
1366 }
1367
1368 if (ctx->cur_frm == ctx->next_frm) {
1369 vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
1370 } else {
1371 vb2_buffer_done(&ctx->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
1372 vb2_buffer_done(&ctx->next_frm->vb.vb2_buf,
1373 VB2_BUF_STATE_ERROR);
1374 }
1375 ctx->cur_frm = NULL;
1376 ctx->next_frm = NULL;
1377 spin_unlock_irqrestore(&ctx->slock, flags);
1378
1379 cal_runtime_put(ctx->dev);
1380 }
1381
1382 static const struct vb2_ops cal_video_qops = {
1383 .queue_setup = cal_queue_setup,
1384 .buf_prepare = cal_buffer_prepare,
1385 .buf_queue = cal_buffer_queue,
1386 .start_streaming = cal_start_streaming,
1387 .stop_streaming = cal_stop_streaming,
1388 .wait_prepare = vb2_ops_wait_prepare,
1389 .wait_finish = vb2_ops_wait_finish,
1390 };
1391
1392 static const struct v4l2_file_operations cal_fops = {
1393 .owner = THIS_MODULE,
1394 .open = v4l2_fh_open,
1395 .release = vb2_fop_release,
1396 .read = vb2_fop_read,
1397 .poll = vb2_fop_poll,
1398 .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
1399 .mmap = vb2_fop_mmap,
1400 };
1401
1402 static const struct v4l2_ioctl_ops cal_ioctl_ops = {
1403 .vidioc_querycap = cal_querycap,
1404 .vidioc_enum_fmt_vid_cap = cal_enum_fmt_vid_cap,
1405 .vidioc_g_fmt_vid_cap = cal_g_fmt_vid_cap,
1406 .vidioc_try_fmt_vid_cap = cal_try_fmt_vid_cap,
1407 .vidioc_s_fmt_vid_cap = cal_s_fmt_vid_cap,
1408 .vidioc_enum_framesizes = cal_enum_framesizes,
1409 .vidioc_reqbufs = vb2_ioctl_reqbufs,
1410 .vidioc_create_bufs = vb2_ioctl_create_bufs,
1411 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
1412 .vidioc_querybuf = vb2_ioctl_querybuf,
1413 .vidioc_qbuf = vb2_ioctl_qbuf,
1414 .vidioc_dqbuf = vb2_ioctl_dqbuf,
1415 .vidioc_enum_input = cal_enum_input,
1416 .vidioc_g_input = cal_g_input,
1417 .vidioc_s_input = cal_s_input,
1418 .vidioc_enum_frameintervals = cal_enum_frameintervals,
1419 .vidioc_streamon = vb2_ioctl_streamon,
1420 .vidioc_streamoff = vb2_ioctl_streamoff,
1421 .vidioc_log_status = v4l2_ctrl_log_status,
1422 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1423 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1424 };
1425
1426 static struct video_device cal_videodev = {
1427 .name = CAL_MODULE_NAME,
1428 .fops = &cal_fops,
1429 .ioctl_ops = &cal_ioctl_ops,
1430 .minor = -1,
1431 .release = video_device_release_empty,
1432 };
1433
1434 /* -----------------------------------------------------------------
1435 * Initialization and module stuff
1436 * ------------------------------------------------------------------
1437 */
1438 static int cal_complete_ctx(struct cal_ctx *ctx);
1439
1440 static int cal_async_bound(struct v4l2_async_notifier *notifier,
1441 struct v4l2_subdev *subdev,
1442 struct v4l2_async_subdev *asd)
1443 {
1444 struct cal_ctx *ctx = notifier_to_ctx(notifier);
1445 struct v4l2_subdev_mbus_code_enum mbus_code;
1446 int ret = 0;
1447 int i, j, k;
1448
1449 if (ctx->sensor) {
1450 ctx_info(ctx, "Rejecting subdev %s (Already set!!)",
1451 subdev->name);
1452 return 0;
1453 }
1454
1455 ctx->sensor = subdev;
1456 ctx_dbg(1, ctx, "Using sensor %s for capture\n", subdev->name);
1457
1458 /* Enumerate sub device formats and enable all matching local formats */
1459 ctx->num_active_fmt = 0;
1460 for (j = 0, i = 0; ret != -EINVAL; ++j) {
1461 struct cal_fmt *fmt;
1462
1463 memset(&mbus_code, 0, sizeof(mbus_code));
1464 mbus_code.index = j;
1465 ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
1466 NULL, &mbus_code);
1467 if (ret)
1468 continue;
1469
1470 ctx_dbg(2, ctx,
1471 "subdev %s: code: %04x idx: %d\n",
1472 subdev->name, mbus_code.code, j);
1473
1474 for (k = 0; k < ARRAY_SIZE(cal_formats); k++) {
1475 fmt = &cal_formats[k];
1476
1477 if (mbus_code.code == fmt->code) {
1478 ctx->active_fmt[i] = fmt;
1479 ctx_dbg(2, ctx,
1480 "matched fourcc: %s: code: %04x idx: %d\n",
1481 fourcc_to_str(fmt->fourcc),
1482 fmt->code, i);
1483 ctx->num_active_fmt = ++i;
1484 }
1485 }
1486 }
1487
1488 if (i == 0) {
1489 ctx_err(ctx, "No suitable format reported by subdev %s\n",
1490 subdev->name);
1491 return -EINVAL;
1492 }
1493
1494 cal_complete_ctx(ctx);
1495
1496 return 0;
1497 }
1498
1499 static int cal_async_complete(struct v4l2_async_notifier *notifier)
1500 {
1501 struct cal_ctx *ctx = notifier_to_ctx(notifier);
1502 const struct cal_fmt *fmt;
1503 struct v4l2_mbus_framefmt mbus_fmt;
1504 int ret;
1505
1506 ret = __subdev_get_format(ctx, &mbus_fmt);
1507 if (ret)
1508 return ret;
1509
1510 fmt = find_format_by_code(ctx, mbus_fmt.code);
1511 if (!fmt) {
1512 ctx_dbg(3, ctx, "mbus code format (0x%08x) not found.\n",
1513 mbus_fmt.code);
1514 return -EINVAL;
1515 }
1516
1517 /* Save current subdev format */
1518 v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt);
1519 ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1520 ctx->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
1521 cal_calc_format_size(ctx, fmt, &ctx->v_fmt);
1522 ctx->fmt = fmt;
1523 ctx->m_fmt = mbus_fmt;
1524
1525 return 0;
1526 }
1527
1528 static int cal_complete_ctx(struct cal_ctx *ctx)
1529 {
1530 struct video_device *vfd;
1531 struct vb2_queue *q;
1532 int ret;
1533
1534 ctx->timeperframe = tpf_default;
1535 ctx->external_rate = 192000000;
1536
1537 /* initialize locks */
1538 spin_lock_init(&ctx->slock);
1539 mutex_init(&ctx->mutex);
1540
1541 /* initialize queue */
1542 q = &ctx->vb_vidq;
1543 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
1544 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
1545 q->drv_priv = ctx;
1546 q->buf_struct_size = sizeof(struct cal_buffer);
1547 q->ops = &cal_video_qops;
1548 q->mem_ops = &vb2_dma_contig_memops;
1549 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
1550 q->lock = &ctx->mutex;
1551 q->min_buffers_needed = 3;
1552 q->dev = ctx->v4l2_dev.dev;
1553
1554 ret = vb2_queue_init(q);
1555 if (ret)
1556 return ret;
1557
1558 /* init video dma queues */
1559 INIT_LIST_HEAD(&ctx->vidq.active);
1560
1561 vfd = &ctx->vdev;
1562 *vfd = cal_videodev;
1563 vfd->v4l2_dev = &ctx->v4l2_dev;
1564 vfd->queue = q;
1565
1566 /*
1567 * Provide a mutex to v4l2 core. It will be used to protect
1568 * all fops and v4l2 ioctls.
1569 */
1570 vfd->lock = &ctx->mutex;
1571 video_set_drvdata(vfd, ctx);
1572
1573 ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
1574 if (ret < 0)
1575 return ret;
1576
1577 v4l2_info(&ctx->v4l2_dev, "V4L2 device registered as %s\n",
1578 video_device_node_name(vfd));
1579
1580 return 0;
1581 }
1582
1583 static struct device_node *
1584 of_get_next_port(const struct device_node *parent,
1585 struct device_node *prev)
1586 {
1587 struct device_node *port = NULL;
1588
1589 if (!parent)
1590 return NULL;
1591
1592 if (!prev) {
1593 struct device_node *ports;
1594 /*
1595 * It's the first call, we have to find a port subnode
1596 * within this node or within an optional 'ports' node.
1597 */
1598 ports = of_get_child_by_name(parent, "ports");
1599 if (ports)
1600 parent = ports;
1601
1602 port = of_get_child_by_name(parent, "port");
1603
1604 /* release the 'ports' node */
1605 of_node_put(ports);
1606 } else {
1607 struct device_node *ports;
1608
1609 ports = of_get_parent(prev);
1610 if (!ports)
1611 return NULL;
1612
1613 do {
1614 port = of_get_next_child(ports, prev);
1615 if (!port) {
1616 of_node_put(ports);
1617 return NULL;
1618 }
1619 prev = port;
1620 } while (of_node_cmp(port->name, "port") != 0);
1621 }
1622
1623 return port;
1624 }
1625
1626 static struct device_node *
1627 of_get_next_endpoint(const struct device_node *parent,
1628 struct device_node *prev)
1629 {
1630 struct device_node *ep = NULL;
1631
1632 if (!parent)
1633 return NULL;
1634
1635 do {
1636 ep = of_get_next_child(parent, prev);
1637 if (!ep)
1638 return NULL;
1639 prev = ep;
1640 } while (of_node_cmp(ep->name, "endpoint") != 0);
1641
1642 return ep;
1643 }
1644
1645 static int of_cal_create_instance(struct cal_ctx *ctx, int inst)
1646 {
1647 struct platform_device *pdev = ctx->dev->pdev;
1648 struct device_node *ep_node, *port, *remote_ep,
1649 *sensor_node, *parent;
1650 struct v4l2_of_endpoint *endpoint;
1651 struct v4l2_async_subdev *asd;
1652 u32 regval = 0;
1653 int ret, index, found_port = 0, lane;
1654
1655 parent = pdev->dev.of_node;
1656
1657 asd = &ctx->asd;
1658 endpoint = &ctx->endpoint;
1659
1660 ep_node = NULL;
1661 port = NULL;
1662 remote_ep = NULL;
1663 sensor_node = NULL;
1664 ret = -EINVAL;
1665
1666 ctx_dbg(3, ctx, "Scanning Port node for csi2 port: %d\n", inst);
1667 for (index = 0; index < CAL_NUM_CSI2_PORTS; index++) {
1668 port = of_get_next_port(parent, port);
1669 if (!port) {
1670 ctx_dbg(1, ctx, "No port node found for csi2 port:%d\n",
1671 index);
1672 goto cleanup_exit;
1673 }
1674
1675 /* Match the slice number with <REG> */
1676 of_property_read_u32(port, "reg", &regval);
1677 ctx_dbg(3, ctx, "port:%d inst:%d <reg>:%d\n",
1678 index, inst, regval);
1679 if ((regval == inst) && (index == inst)) {
1680 found_port = 1;
1681 break;
1682 }
1683 }
1684
1685 if (!found_port) {
1686 ctx_dbg(1, ctx, "No port node matches csi2 port:%d\n",
1687 inst);
1688 goto cleanup_exit;
1689 }
1690
1691 ctx_dbg(3, ctx, "Scanning sub-device for csi2 port: %d\n",
1692 inst);
1693
1694 ep_node = of_get_next_endpoint(port, ep_node);
1695 if (!ep_node) {
1696 ctx_dbg(3, ctx, "can't get next endpoint\n");
1697 goto cleanup_exit;
1698 }
1699
1700 sensor_node = of_graph_get_remote_port_parent(ep_node);
1701 if (!sensor_node) {
1702 ctx_dbg(3, ctx, "can't get remote parent\n");
1703 goto cleanup_exit;
1704 }
1705 asd->match_type = V4L2_ASYNC_MATCH_OF;
1706 asd->match.of.node = sensor_node;
1707
1708 remote_ep = of_parse_phandle(ep_node, "remote-endpoint", 0);
1709 if (!remote_ep) {
1710 ctx_dbg(3, ctx, "can't get remote-endpoint\n");
1711 goto cleanup_exit;
1712 }
1713 v4l2_of_parse_endpoint(remote_ep, endpoint);
1714
1715 if (endpoint->bus_type != V4L2_MBUS_CSI2) {
1716 ctx_err(ctx, "Port:%d sub-device %s is not a CSI2 device\n",
1717 inst, sensor_node->name);
1718 goto cleanup_exit;
1719 }
1720
1721 /* Store Virtual Channel number */
1722 ctx->virtual_channel = endpoint->base.id;
1723
1724 ctx_dbg(3, ctx, "Port:%d v4l2-endpoint: CSI2\n", inst);
1725 ctx_dbg(3, ctx, "Virtual Channel=%d\n", ctx->virtual_channel);
1726 ctx_dbg(3, ctx, "flags=0x%08x\n", endpoint->bus.mipi_csi2.flags);
1727 ctx_dbg(3, ctx, "clock_lane=%d\n", endpoint->bus.mipi_csi2.clock_lane);
1728 ctx_dbg(3, ctx, "num_data_lanes=%d\n",
1729 endpoint->bus.mipi_csi2.num_data_lanes);
1730 ctx_dbg(3, ctx, "data_lanes= <\n");
1731 for (lane = 0; lane < endpoint->bus.mipi_csi2.num_data_lanes; lane++)
1732 ctx_dbg(3, ctx, "\t%d\n",
1733 endpoint->bus.mipi_csi2.data_lanes[lane]);
1734 ctx_dbg(3, ctx, "\t>\n");
1735
1736 ctx_dbg(1, ctx, "Port: %d found sub-device %s\n",
1737 inst, sensor_node->name);
1738
1739 ctx->asd_list[0] = asd;
1740 ctx->notifier.subdevs = ctx->asd_list;
1741 ctx->notifier.num_subdevs = 1;
1742 ctx->notifier.bound = cal_async_bound;
1743 ctx->notifier.complete = cal_async_complete;
1744 ret = v4l2_async_notifier_register(&ctx->v4l2_dev,
1745 &ctx->notifier);
1746 if (ret) {
1747 ctx_err(ctx, "Error registering async notifier\n");
1748 ret = -EINVAL;
1749 }
1750
1751 cleanup_exit:
1752 if (!remote_ep)
1753 of_node_put(remote_ep);
1754 if (!sensor_node)
1755 of_node_put(sensor_node);
1756 if (!ep_node)
1757 of_node_put(ep_node);
1758 if (!port)
1759 of_node_put(port);
1760
1761 return ret;
1762 }
1763
1764 static struct cal_ctx *cal_create_instance(struct cal_dev *dev, int inst)
1765 {
1766 struct cal_ctx *ctx;
1767 struct v4l2_ctrl_handler *hdl;
1768 int ret;
1769
1770 ctx = devm_kzalloc(&dev->pdev->dev, sizeof(*ctx), GFP_KERNEL);
1771 if (!ctx)
1772 return NULL;
1773
1774 /* save the cal_dev * for future ref */
1775 ctx->dev = dev;
1776
1777 snprintf(ctx->v4l2_dev.name, sizeof(ctx->v4l2_dev.name),
1778 "%s-%03d", CAL_MODULE_NAME, inst);
1779 ret = v4l2_device_register(&dev->pdev->dev, &ctx->v4l2_dev);
1780 if (ret)
1781 goto err_exit;
1782
1783 hdl = &ctx->ctrl_handler;
1784 ret = v4l2_ctrl_handler_init(hdl, 11);
1785 if (ret) {
1786 ctx_err(ctx, "Failed to init ctrl handler\n");
1787 goto unreg_dev;
1788 }
1789 ctx->v4l2_dev.ctrl_handler = hdl;
1790
1791 /* Make sure Camera Core H/W register area is available */
1792 ctx->cc = dev->cc[inst];
1793
1794 /* Store the instance id */
1795 ctx->csi2_port = inst + 1;
1796
1797 ret = of_cal_create_instance(ctx, inst);
1798 if (ret) {
1799 ret = -EINVAL;
1800 goto free_hdl;
1801 }
1802 return ctx;
1803
1804 free_hdl:
1805 v4l2_ctrl_handler_free(hdl);
1806 unreg_dev:
1807 v4l2_device_unregister(&ctx->v4l2_dev);
1808 err_exit:
1809 return NULL;
1810 }
1811
1812 static int cal_probe(struct platform_device *pdev)
1813 {
1814 struct cal_dev *dev;
1815 int ret;
1816 int irq;
1817
1818 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
1819 if (!dev)
1820 return -ENOMEM;
1821
1822 /* set pseudo v4l2 device name so we can use v4l2_printk */
1823 strlcpy(dev->v4l2_dev.name, CAL_MODULE_NAME,
1824 sizeof(dev->v4l2_dev.name));
1825
1826 /* save pdev pointer */
1827 dev->pdev = pdev;
1828
1829 dev->res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
1830 "cal_top");
1831 dev->base = devm_ioremap_resource(&pdev->dev, dev->res);
1832 if (IS_ERR(dev->base))
1833 return PTR_ERR(dev->base);
1834
1835 cal_dbg(1, dev, "ioresource %s at %pa - %pa\n",
1836 dev->res->name, &dev->res->start, &dev->res->end);
1837
1838 irq = platform_get_irq(pdev, 0);
1839 cal_dbg(1, dev, "got irq# %d\n", irq);
1840 ret = devm_request_irq(&pdev->dev, irq, cal_irq, 0, CAL_MODULE_NAME,
1841 dev);
1842 if (ret)
1843 return ret;
1844
1845 platform_set_drvdata(pdev, dev);
1846
1847 dev->cm = cm_create(dev);
1848 if (IS_ERR(dev->cm))
1849 return PTR_ERR(dev->cm);
1850
1851 dev->cc[0] = cc_create(dev, 0);
1852 if (IS_ERR(dev->cc[0]))
1853 return PTR_ERR(dev->cc[0]);
1854
1855 dev->cc[1] = cc_create(dev, 1);
1856 if (IS_ERR(dev->cc[1]))
1857 return PTR_ERR(dev->cc[1]);
1858
1859 dev->ctx[0] = NULL;
1860 dev->ctx[1] = NULL;
1861
1862 dev->ctx[0] = cal_create_instance(dev, 0);
1863 dev->ctx[1] = cal_create_instance(dev, 1);
1864 if (!dev->ctx[0] && !dev->ctx[1]) {
1865 cal_err(dev, "Neither port is configured, no point in staying up\n");
1866 return -ENODEV;
1867 }
1868
1869 pm_runtime_enable(&pdev->dev);
1870
1871 ret = cal_runtime_get(dev);
1872 if (ret)
1873 goto runtime_disable;
1874
1875 /* Just check we can actually access the module */
1876 cal_get_hwinfo(dev);
1877
1878 cal_runtime_put(dev);
1879
1880 return 0;
1881
1882 runtime_disable:
1883 pm_runtime_disable(&pdev->dev);
1884 return ret;
1885 }
1886
1887 static int cal_remove(struct platform_device *pdev)
1888 {
1889 struct cal_dev *dev =
1890 (struct cal_dev *)platform_get_drvdata(pdev);
1891 struct cal_ctx *ctx;
1892 int i;
1893
1894 cal_dbg(1, dev, "Removing %s\n", CAL_MODULE_NAME);
1895
1896 cal_runtime_get(dev);
1897
1898 for (i = 0; i < CAL_NUM_CONTEXT; i++) {
1899 ctx = dev->ctx[i];
1900 if (ctx) {
1901 ctx_dbg(1, ctx, "unregistering %s\n",
1902 video_device_node_name(&ctx->vdev));
1903 camerarx_phy_disable(ctx);
1904 v4l2_async_notifier_unregister(&ctx->notifier);
1905 v4l2_ctrl_handler_free(&ctx->ctrl_handler);
1906 v4l2_device_unregister(&ctx->v4l2_dev);
1907 video_unregister_device(&ctx->vdev);
1908 }
1909 }
1910
1911 cal_runtime_put(dev);
1912 pm_runtime_disable(&pdev->dev);
1913
1914 return 0;
1915 }
1916
1917 #if defined(CONFIG_OF)
1918 static const struct of_device_id cal_of_match[] = {
1919 { .compatible = "ti,dra72-cal", },
1920 {},
1921 };
1922 MODULE_DEVICE_TABLE(of, cal_of_match);
1923 #endif
1924
1925 static struct platform_driver cal_pdrv = {
1926 .probe = cal_probe,
1927 .remove = cal_remove,
1928 .driver = {
1929 .name = CAL_MODULE_NAME,
1930 .of_match_table = of_match_ptr(cal_of_match),
1931 },
1932 };
1933
1934 module_platform_driver(cal_pdrv);
Linux with added FPC-III support