1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
4  *
5  * Copyright (C) 2013 Samsung Electronics Co., Ltd.
6  *
7  * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
8  *          Younghwan Joo <yhwan.joo@samsung.com>
9  */
10 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
11 
12 #include <linux/device.h>
13 #include <linux/errno.h>
14 #include <linux/kernel.h>
15 #include <linux/list.h>
16 #include <linux/module.h>
17 #include <linux/platform_device.h>
18 #include <linux/printk.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/slab.h>
21 #include <linux/types.h>
22 #include <media/v4l2-device.h>
23 
24 #include "media-dev.h"
25 #include "fimc-isp-video.h"
26 #include "fimc-is-command.h"
27 #include "fimc-is-param.h"
28 #include "fimc-is-regs.h"
29 #include "fimc-is.h"
30 
31 int fimc_isp_debug;
32 module_param_named(debug_isp, fimc_isp_debug, int, S_IRUGO | S_IWUSR);
33 
34 static const struct fimc_fmt fimc_isp_formats[FIMC_ISP_NUM_FORMATS] = {
35 	{
36 		.fourcc		= V4L2_PIX_FMT_SGRBG8,
37 		.depth		= { 8 },
38 		.color		= FIMC_FMT_RAW8,
39 		.memplanes	= 1,
40 		.mbus_code	= MEDIA_BUS_FMT_SGRBG8_1X8,
41 	}, {
42 		.fourcc		= V4L2_PIX_FMT_SGRBG10,
43 		.depth		= { 10 },
44 		.color		= FIMC_FMT_RAW10,
45 		.memplanes	= 1,
46 		.mbus_code	= MEDIA_BUS_FMT_SGRBG10_1X10,
47 	}, {
48 		.fourcc		= V4L2_PIX_FMT_SGRBG12,
49 		.depth		= { 12 },
50 		.color		= FIMC_FMT_RAW12,
51 		.memplanes	= 1,
52 		.mbus_code	= MEDIA_BUS_FMT_SGRBG12_1X12,
53 	},
54 };
55 
56 /**
57  * fimc_isp_find_format - lookup color format by fourcc or media bus code
58  * @pixelformat: fourcc to match, ignored if null
59  * @mbus_code: media bus code to match, ignored if null
60  * @index: index to the fimc_isp_formats array, ignored if negative
61  */
fimc_isp_find_format(const u32 * pixelformat,const u32 * mbus_code,int index)62 const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
63 					const u32 *mbus_code, int index)
64 {
65 	const struct fimc_fmt *fmt, *def_fmt = NULL;
66 	unsigned int i;
67 	int id = 0;
68 
69 	if (index >= (int)ARRAY_SIZE(fimc_isp_formats))
70 		return NULL;
71 
72 	for (i = 0; i < ARRAY_SIZE(fimc_isp_formats); ++i) {
73 		fmt = &fimc_isp_formats[i];
74 		if (pixelformat && fmt->fourcc == *pixelformat)
75 			return fmt;
76 		if (mbus_code && fmt->mbus_code == *mbus_code)
77 			return fmt;
78 		if (index == id)
79 			def_fmt = fmt;
80 		id++;
81 	}
82 	return def_fmt;
83 }
84 
fimc_isp_irq_handler(struct fimc_is * is)85 void fimc_isp_irq_handler(struct fimc_is *is)
86 {
87 	is->i2h_cmd.args[0] = mcuctl_read(is, MCUCTL_REG_ISSR(20));
88 	is->i2h_cmd.args[1] = mcuctl_read(is, MCUCTL_REG_ISSR(21));
89 
90 	fimc_is_fw_clear_irq1(is, FIMC_IS_INT_FRAME_DONE_ISP);
91 	fimc_isp_video_irq_handler(is);
92 
93 	wake_up(&is->irq_queue);
94 }
95 
96 /* Capture subdev media entity operations */
fimc_is_link_setup(struct media_entity * entity,const struct media_pad * local,const struct media_pad * remote,u32 flags)97 static int fimc_is_link_setup(struct media_entity *entity,
98 				const struct media_pad *local,
99 				const struct media_pad *remote, u32 flags)
100 {
101 	return 0;
102 }
103 
104 static const struct media_entity_operations fimc_is_subdev_media_ops = {
105 	.link_setup = fimc_is_link_setup,
106 };
107 
fimc_is_subdev_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)108 static int fimc_is_subdev_enum_mbus_code(struct v4l2_subdev *sd,
109 				struct v4l2_subdev_state *sd_state,
110 				struct v4l2_subdev_mbus_code_enum *code)
111 {
112 	const struct fimc_fmt *fmt;
113 
114 	fmt = fimc_isp_find_format(NULL, NULL, code->index);
115 	if (!fmt)
116 		return -EINVAL;
117 	code->code = fmt->mbus_code;
118 	return 0;
119 }
120 
fimc_isp_subdev_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)121 static int fimc_isp_subdev_get_fmt(struct v4l2_subdev *sd,
122 				   struct v4l2_subdev_state *sd_state,
123 				   struct v4l2_subdev_format *fmt)
124 {
125 	struct fimc_isp *isp = v4l2_get_subdevdata(sd);
126 	struct v4l2_mbus_framefmt *mf = &fmt->format;
127 
128 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
129 		*mf = *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
130 		return 0;
131 	}
132 
133 	mf->colorspace = V4L2_COLORSPACE_SRGB;
134 
135 	mutex_lock(&isp->subdev_lock);
136 
137 	if (fmt->pad == FIMC_ISP_SD_PAD_SINK) {
138 		/* ISP OTF input image format */
139 		*mf = isp->sink_fmt;
140 	} else {
141 		/* ISP OTF output image format */
142 		*mf = isp->src_fmt;
143 
144 		if (fmt->pad == FIMC_ISP_SD_PAD_SRC_FIFO) {
145 			mf->colorspace = V4L2_COLORSPACE_JPEG;
146 			mf->code = MEDIA_BUS_FMT_YUV10_1X30;
147 		}
148 	}
149 
150 	mutex_unlock(&isp->subdev_lock);
151 
152 	isp_dbg(1, sd, "%s: pad%d: fmt: 0x%x, %dx%d\n", __func__,
153 		fmt->pad, mf->code, mf->width, mf->height);
154 
155 	return 0;
156 }
157 
__isp_subdev_try_format(struct fimc_isp * isp,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)158 static void __isp_subdev_try_format(struct fimc_isp *isp,
159 				    struct v4l2_subdev_state *sd_state,
160 				    struct v4l2_subdev_format *fmt)
161 {
162 	struct v4l2_mbus_framefmt *mf = &fmt->format;
163 	struct v4l2_mbus_framefmt *format;
164 
165 	mf->colorspace = V4L2_COLORSPACE_SRGB;
166 
167 	if (fmt->pad == FIMC_ISP_SD_PAD_SINK) {
168 		v4l_bound_align_image(&mf->width, FIMC_ISP_SINK_WIDTH_MIN,
169 				FIMC_ISP_SINK_WIDTH_MAX, 0,
170 				&mf->height, FIMC_ISP_SINK_HEIGHT_MIN,
171 				FIMC_ISP_SINK_HEIGHT_MAX, 0, 0);
172 		mf->code = MEDIA_BUS_FMT_SGRBG10_1X10;
173 	} else {
174 		if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
175 			format = v4l2_subdev_get_try_format(&isp->subdev,
176 							    sd_state,
177 							    FIMC_ISP_SD_PAD_SINK);
178 		else
179 			format = &isp->sink_fmt;
180 
181 		/* Allow changing format only on sink pad */
182 		mf->width = format->width - FIMC_ISP_CAC_MARGIN_WIDTH;
183 		mf->height = format->height - FIMC_ISP_CAC_MARGIN_HEIGHT;
184 
185 		if (fmt->pad == FIMC_ISP_SD_PAD_SRC_FIFO) {
186 			mf->code = MEDIA_BUS_FMT_YUV10_1X30;
187 			mf->colorspace = V4L2_COLORSPACE_JPEG;
188 		} else {
189 			mf->code = format->code;
190 		}
191 	}
192 }
193 
fimc_isp_subdev_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)194 static int fimc_isp_subdev_set_fmt(struct v4l2_subdev *sd,
195 				   struct v4l2_subdev_state *sd_state,
196 				   struct v4l2_subdev_format *fmt)
197 {
198 	struct fimc_isp *isp = v4l2_get_subdevdata(sd);
199 	struct fimc_is *is = fimc_isp_to_is(isp);
200 	struct v4l2_mbus_framefmt *mf = &fmt->format;
201 	int ret = 0;
202 
203 	isp_dbg(1, sd, "%s: pad%d: code: 0x%x, %dx%d\n",
204 		 __func__, fmt->pad, mf->code, mf->width, mf->height);
205 
206 	mutex_lock(&isp->subdev_lock);
207 	__isp_subdev_try_format(isp, sd_state, fmt);
208 
209 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
210 		mf = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
211 		*mf = fmt->format;
212 
213 		/* Propagate format to the source pads */
214 		if (fmt->pad == FIMC_ISP_SD_PAD_SINK) {
215 			struct v4l2_subdev_format format = *fmt;
216 			unsigned int pad;
217 
218 			for (pad = FIMC_ISP_SD_PAD_SRC_FIFO;
219 					pad < FIMC_ISP_SD_PADS_NUM; pad++) {
220 				format.pad = pad;
221 				__isp_subdev_try_format(isp, sd_state,
222 							&format);
223 				mf = v4l2_subdev_get_try_format(sd, sd_state,
224 								pad);
225 				*mf = format.format;
226 			}
227 		}
228 	} else {
229 		if (!media_entity_is_streaming(&sd->entity)) {
230 			if (fmt->pad == FIMC_ISP_SD_PAD_SINK) {
231 				struct v4l2_subdev_format format = *fmt;
232 
233 				isp->sink_fmt = *mf;
234 
235 				format.pad = FIMC_ISP_SD_PAD_SRC_DMA;
236 				__isp_subdev_try_format(isp, sd_state,
237 							&format);
238 
239 				isp->src_fmt = format.format;
240 				__is_set_frame_size(is, &isp->src_fmt);
241 			} else {
242 				isp->src_fmt = *mf;
243 			}
244 		} else {
245 			ret = -EBUSY;
246 		}
247 	}
248 
249 	mutex_unlock(&isp->subdev_lock);
250 	return ret;
251 }
252 
fimc_isp_subdev_s_stream(struct v4l2_subdev * sd,int on)253 static int fimc_isp_subdev_s_stream(struct v4l2_subdev *sd, int on)
254 {
255 	struct fimc_isp *isp = v4l2_get_subdevdata(sd);
256 	struct fimc_is *is = fimc_isp_to_is(isp);
257 	int ret;
258 
259 	isp_dbg(1, sd, "%s: on: %d\n", __func__, on);
260 
261 	if (!test_bit(IS_ST_INIT_DONE, &is->state))
262 		return -EBUSY;
263 
264 	fimc_is_mem_barrier();
265 
266 	if (on) {
267 		if (__get_pending_param_count(is)) {
268 			ret = fimc_is_itf_s_param(is, true);
269 			if (ret < 0)
270 				return ret;
271 		}
272 
273 		isp_dbg(1, sd, "changing mode to %d\n", is->config_index);
274 
275 		ret = fimc_is_itf_mode_change(is);
276 		if (ret)
277 			return -EINVAL;
278 
279 		clear_bit(IS_ST_STREAM_ON, &is->state);
280 		fimc_is_hw_stream_on(is);
281 		ret = fimc_is_wait_event(is, IS_ST_STREAM_ON, 1,
282 					 FIMC_IS_CONFIG_TIMEOUT);
283 		if (ret < 0) {
284 			v4l2_err(sd, "stream on timeout\n");
285 			return ret;
286 		}
287 	} else {
288 		clear_bit(IS_ST_STREAM_OFF, &is->state);
289 		fimc_is_hw_stream_off(is);
290 		ret = fimc_is_wait_event(is, IS_ST_STREAM_OFF, 1,
291 					 FIMC_IS_CONFIG_TIMEOUT);
292 		if (ret < 0) {
293 			v4l2_err(sd, "stream off timeout\n");
294 			return ret;
295 		}
296 		is->setfile.sub_index = 0;
297 	}
298 
299 	return 0;
300 }
301 
fimc_isp_subdev_s_power(struct v4l2_subdev * sd,int on)302 static int fimc_isp_subdev_s_power(struct v4l2_subdev *sd, int on)
303 {
304 	struct fimc_isp *isp = v4l2_get_subdevdata(sd);
305 	struct fimc_is *is = fimc_isp_to_is(isp);
306 	int ret = 0;
307 
308 	pr_debug("on: %d\n", on);
309 
310 	if (on) {
311 		ret = pm_runtime_resume_and_get(&is->pdev->dev);
312 		if (ret < 0)
313 			return ret;
314 
315 		set_bit(IS_ST_PWR_ON, &is->state);
316 
317 		ret = fimc_is_start_firmware(is);
318 		if (ret < 0) {
319 			v4l2_err(sd, "firmware booting failed\n");
320 			pm_runtime_put(&is->pdev->dev);
321 			return ret;
322 		}
323 		set_bit(IS_ST_PWR_SUBIP_ON, &is->state);
324 
325 		ret = fimc_is_hw_initialize(is);
326 	} else {
327 		/* Close sensor */
328 		if (!test_bit(IS_ST_PWR_ON, &is->state)) {
329 			fimc_is_hw_close_sensor(is, 0);
330 
331 			ret = fimc_is_wait_event(is, IS_ST_OPEN_SENSOR, 0,
332 						 FIMC_IS_CONFIG_TIMEOUT);
333 			if (ret < 0) {
334 				v4l2_err(sd, "sensor close timeout\n");
335 				return ret;
336 			}
337 		}
338 
339 		/* SUB IP power off */
340 		if (test_bit(IS_ST_PWR_SUBIP_ON, &is->state)) {
341 			fimc_is_hw_subip_power_off(is);
342 			ret = fimc_is_wait_event(is, IS_ST_PWR_SUBIP_ON, 0,
343 						 FIMC_IS_CONFIG_TIMEOUT);
344 			if (ret < 0) {
345 				v4l2_err(sd, "sub-IP power off timeout\n");
346 				return ret;
347 			}
348 		}
349 
350 		fimc_is_cpu_set_power(is, 0);
351 		pm_runtime_put_sync(&is->pdev->dev);
352 
353 		clear_bit(IS_ST_PWR_ON, &is->state);
354 		clear_bit(IS_ST_INIT_DONE, &is->state);
355 		is->state = 0;
356 		is->config[is->config_index].p_region_index[0] = 0;
357 		is->config[is->config_index].p_region_index[1] = 0;
358 		set_bit(IS_ST_IDLE, &is->state);
359 		wmb();
360 	}
361 
362 	return ret;
363 }
364 
fimc_isp_subdev_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)365 static int fimc_isp_subdev_open(struct v4l2_subdev *sd,
366 				struct v4l2_subdev_fh *fh)
367 {
368 	struct v4l2_mbus_framefmt *format;
369 	struct v4l2_mbus_framefmt fmt = {
370 		.colorspace = V4L2_COLORSPACE_SRGB,
371 		.code = fimc_isp_formats[0].mbus_code,
372 		.width = DEFAULT_PREVIEW_STILL_WIDTH + FIMC_ISP_CAC_MARGIN_WIDTH,
373 		.height = DEFAULT_PREVIEW_STILL_HEIGHT + FIMC_ISP_CAC_MARGIN_HEIGHT,
374 		.field = V4L2_FIELD_NONE,
375 	};
376 
377 	format = v4l2_subdev_get_try_format(sd, fh->state,
378 					    FIMC_ISP_SD_PAD_SINK);
379 	*format = fmt;
380 
381 	format = v4l2_subdev_get_try_format(sd, fh->state,
382 					    FIMC_ISP_SD_PAD_SRC_FIFO);
383 	fmt.width = DEFAULT_PREVIEW_STILL_WIDTH;
384 	fmt.height = DEFAULT_PREVIEW_STILL_HEIGHT;
385 	*format = fmt;
386 
387 	format = v4l2_subdev_get_try_format(sd, fh->state,
388 					    FIMC_ISP_SD_PAD_SRC_DMA);
389 	*format = fmt;
390 
391 	return 0;
392 }
393 
fimc_isp_subdev_registered(struct v4l2_subdev * sd)394 static int fimc_isp_subdev_registered(struct v4l2_subdev *sd)
395 {
396 	struct fimc_isp *isp = v4l2_get_subdevdata(sd);
397 	int ret;
398 
399 	/* Use pipeline object allocated by the media device. */
400 	isp->video_capture.ve.pipe = v4l2_get_subdev_hostdata(sd);
401 
402 	ret = fimc_isp_video_device_register(isp, sd->v4l2_dev,
403 			V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
404 	if (ret < 0)
405 		isp->video_capture.ve.pipe = NULL;
406 
407 	return ret;
408 }
409 
fimc_isp_subdev_unregistered(struct v4l2_subdev * sd)410 static void fimc_isp_subdev_unregistered(struct v4l2_subdev *sd)
411 {
412 	struct fimc_isp *isp = v4l2_get_subdevdata(sd);
413 
414 	fimc_isp_video_device_unregister(isp,
415 			V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
416 }
417 
418 static const struct v4l2_subdev_internal_ops fimc_is_subdev_internal_ops = {
419 	.registered = fimc_isp_subdev_registered,
420 	.unregistered = fimc_isp_subdev_unregistered,
421 	.open = fimc_isp_subdev_open,
422 };
423 
424 static const struct v4l2_subdev_pad_ops fimc_is_subdev_pad_ops = {
425 	.enum_mbus_code = fimc_is_subdev_enum_mbus_code,
426 	.get_fmt = fimc_isp_subdev_get_fmt,
427 	.set_fmt = fimc_isp_subdev_set_fmt,
428 };
429 
430 static const struct v4l2_subdev_video_ops fimc_is_subdev_video_ops = {
431 	.s_stream = fimc_isp_subdev_s_stream,
432 };
433 
434 static const struct v4l2_subdev_core_ops fimc_is_core_ops = {
435 	.s_power = fimc_isp_subdev_s_power,
436 };
437 
438 static const struct v4l2_subdev_ops fimc_is_subdev_ops = {
439 	.core = &fimc_is_core_ops,
440 	.video = &fimc_is_subdev_video_ops,
441 	.pad = &fimc_is_subdev_pad_ops,
442 };
443 
__ctrl_set_white_balance(struct fimc_is * is,int value)444 static int __ctrl_set_white_balance(struct fimc_is *is, int value)
445 {
446 	switch (value) {
447 	case V4L2_WHITE_BALANCE_AUTO:
448 		__is_set_isp_awb(is, ISP_AWB_COMMAND_AUTO, 0);
449 		break;
450 	case V4L2_WHITE_BALANCE_DAYLIGHT:
451 		__is_set_isp_awb(is, ISP_AWB_COMMAND_ILLUMINATION,
452 					ISP_AWB_ILLUMINATION_DAYLIGHT);
453 		break;
454 	case V4L2_WHITE_BALANCE_CLOUDY:
455 		__is_set_isp_awb(is, ISP_AWB_COMMAND_ILLUMINATION,
456 					ISP_AWB_ILLUMINATION_CLOUDY);
457 		break;
458 	case V4L2_WHITE_BALANCE_INCANDESCENT:
459 		__is_set_isp_awb(is, ISP_AWB_COMMAND_ILLUMINATION,
460 					ISP_AWB_ILLUMINATION_TUNGSTEN);
461 		break;
462 	case V4L2_WHITE_BALANCE_FLUORESCENT:
463 		__is_set_isp_awb(is, ISP_AWB_COMMAND_ILLUMINATION,
464 					ISP_AWB_ILLUMINATION_FLUORESCENT);
465 		break;
466 	default:
467 		return -EINVAL;
468 	}
469 
470 	return 0;
471 }
472 
__ctrl_set_aewb_lock(struct fimc_is * is,struct v4l2_ctrl * ctrl)473 static int __ctrl_set_aewb_lock(struct fimc_is *is,
474 				      struct v4l2_ctrl *ctrl)
475 {
476 	bool awb_lock = ctrl->val & V4L2_LOCK_WHITE_BALANCE;
477 	bool ae_lock = ctrl->val & V4L2_LOCK_EXPOSURE;
478 	struct isp_param *isp = &is->is_p_region->parameter.isp;
479 	int cmd, ret;
480 
481 	cmd = ae_lock ? ISP_AA_COMMAND_STOP : ISP_AA_COMMAND_START;
482 	isp->aa.cmd = cmd;
483 	isp->aa.target = ISP_AA_TARGET_AE;
484 	fimc_is_set_param_bit(is, PARAM_ISP_AA);
485 	is->af.ae_lock_state = ae_lock;
486 	wmb();
487 
488 	ret = fimc_is_itf_s_param(is, false);
489 	if (ret < 0)
490 		return ret;
491 
492 	cmd = awb_lock ? ISP_AA_COMMAND_STOP : ISP_AA_COMMAND_START;
493 	isp->aa.cmd = cmd;
494 	isp->aa.target = ISP_AA_TARGET_AE;
495 	fimc_is_set_param_bit(is, PARAM_ISP_AA);
496 	is->af.awb_lock_state = awb_lock;
497 	wmb();
498 
499 	return fimc_is_itf_s_param(is, false);
500 }
501 
502 /* Supported manual ISO values */
503 static const s64 iso_qmenu[] = {
504 	50, 100, 200, 400, 800,
505 };
506 
__ctrl_set_iso(struct fimc_is * is,int value)507 static int __ctrl_set_iso(struct fimc_is *is, int value)
508 {
509 	unsigned int idx, iso;
510 
511 	if (value == V4L2_ISO_SENSITIVITY_AUTO) {
512 		__is_set_isp_iso(is, ISP_ISO_COMMAND_AUTO, 0);
513 		return 0;
514 	}
515 	idx = is->isp.ctrls.iso->val;
516 	if (idx >= ARRAY_SIZE(iso_qmenu))
517 		return -EINVAL;
518 
519 	iso = iso_qmenu[idx];
520 	__is_set_isp_iso(is, ISP_ISO_COMMAND_MANUAL, iso);
521 	return 0;
522 }
523 
__ctrl_set_metering(struct fimc_is * is,unsigned int value)524 static int __ctrl_set_metering(struct fimc_is *is, unsigned int value)
525 {
526 	unsigned int val;
527 
528 	switch (value) {
529 	case V4L2_EXPOSURE_METERING_AVERAGE:
530 		val = ISP_METERING_COMMAND_AVERAGE;
531 		break;
532 	case V4L2_EXPOSURE_METERING_CENTER_WEIGHTED:
533 		val = ISP_METERING_COMMAND_CENTER;
534 		break;
535 	case V4L2_EXPOSURE_METERING_SPOT:
536 		val = ISP_METERING_COMMAND_SPOT;
537 		break;
538 	case V4L2_EXPOSURE_METERING_MATRIX:
539 		val = ISP_METERING_COMMAND_MATRIX;
540 		break;
541 	default:
542 		return -EINVAL;
543 	}
544 
545 	__is_set_isp_metering(is, IS_METERING_CONFIG_CMD, val);
546 	return 0;
547 }
548 
__ctrl_set_afc(struct fimc_is * is,int value)549 static int __ctrl_set_afc(struct fimc_is *is, int value)
550 {
551 	switch (value) {
552 	case V4L2_CID_POWER_LINE_FREQUENCY_DISABLED:
553 		__is_set_isp_afc(is, ISP_AFC_COMMAND_DISABLE, 0);
554 		break;
555 	case V4L2_CID_POWER_LINE_FREQUENCY_50HZ:
556 		__is_set_isp_afc(is, ISP_AFC_COMMAND_MANUAL, 50);
557 		break;
558 	case V4L2_CID_POWER_LINE_FREQUENCY_60HZ:
559 		__is_set_isp_afc(is, ISP_AFC_COMMAND_MANUAL, 60);
560 		break;
561 	case V4L2_CID_POWER_LINE_FREQUENCY_AUTO:
562 		__is_set_isp_afc(is, ISP_AFC_COMMAND_AUTO, 0);
563 		break;
564 	default:
565 		return -EINVAL;
566 	}
567 
568 	return 0;
569 }
570 
__ctrl_set_image_effect(struct fimc_is * is,int value)571 static int __ctrl_set_image_effect(struct fimc_is *is, int value)
572 {
573 	static const u8 effects[][2] = {
574 		{ V4L2_COLORFX_NONE,	 ISP_IMAGE_EFFECT_DISABLE },
575 		{ V4L2_COLORFX_BW,	 ISP_IMAGE_EFFECT_MONOCHROME },
576 		{ V4L2_COLORFX_SEPIA,	 ISP_IMAGE_EFFECT_SEPIA },
577 		{ V4L2_COLORFX_NEGATIVE, ISP_IMAGE_EFFECT_NEGATIVE_MONO },
578 		{ 16 /* TODO */,	 ISP_IMAGE_EFFECT_NEGATIVE_COLOR },
579 	};
580 	int i;
581 
582 	for (i = 0; i < ARRAY_SIZE(effects); i++) {
583 		if (effects[i][0] != value)
584 			continue;
585 
586 		__is_set_isp_effect(is, effects[i][1]);
587 		return 0;
588 	}
589 
590 	return -EINVAL;
591 }
592 
fimc_is_s_ctrl(struct v4l2_ctrl * ctrl)593 static int fimc_is_s_ctrl(struct v4l2_ctrl *ctrl)
594 {
595 	struct fimc_isp *isp = ctrl_to_fimc_isp(ctrl);
596 	struct fimc_is *is = fimc_isp_to_is(isp);
597 	bool set_param = true;
598 	int ret = 0;
599 
600 	switch (ctrl->id) {
601 	case V4L2_CID_CONTRAST:
602 		__is_set_isp_adjust(is, ISP_ADJUST_COMMAND_MANUAL_CONTRAST,
603 				    ctrl->val);
604 		break;
605 
606 	case V4L2_CID_SATURATION:
607 		__is_set_isp_adjust(is, ISP_ADJUST_COMMAND_MANUAL_SATURATION,
608 				    ctrl->val);
609 		break;
610 
611 	case V4L2_CID_SHARPNESS:
612 		__is_set_isp_adjust(is, ISP_ADJUST_COMMAND_MANUAL_SHARPNESS,
613 				    ctrl->val);
614 		break;
615 
616 	case V4L2_CID_EXPOSURE_ABSOLUTE:
617 		__is_set_isp_adjust(is, ISP_ADJUST_COMMAND_MANUAL_EXPOSURE,
618 				    ctrl->val);
619 		break;
620 
621 	case V4L2_CID_BRIGHTNESS:
622 		__is_set_isp_adjust(is, ISP_ADJUST_COMMAND_MANUAL_BRIGHTNESS,
623 				    ctrl->val);
624 		break;
625 
626 	case V4L2_CID_HUE:
627 		__is_set_isp_adjust(is, ISP_ADJUST_COMMAND_MANUAL_HUE,
628 				    ctrl->val);
629 		break;
630 
631 	case V4L2_CID_EXPOSURE_METERING:
632 		ret = __ctrl_set_metering(is, ctrl->val);
633 		break;
634 
635 	case V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE:
636 		ret = __ctrl_set_white_balance(is, ctrl->val);
637 		break;
638 
639 	case V4L2_CID_3A_LOCK:
640 		ret = __ctrl_set_aewb_lock(is, ctrl);
641 		set_param = false;
642 		break;
643 
644 	case V4L2_CID_ISO_SENSITIVITY_AUTO:
645 		ret = __ctrl_set_iso(is, ctrl->val);
646 		break;
647 
648 	case V4L2_CID_POWER_LINE_FREQUENCY:
649 		ret = __ctrl_set_afc(is, ctrl->val);
650 		break;
651 
652 	case V4L2_CID_COLORFX:
653 		__ctrl_set_image_effect(is, ctrl->val);
654 		break;
655 
656 	default:
657 		ret = -EINVAL;
658 		break;
659 	}
660 
661 	if (ret < 0) {
662 		v4l2_err(&isp->subdev, "Failed to set control: %s (%d)\n",
663 						ctrl->name, ctrl->val);
664 		return ret;
665 	}
666 
667 	if (set_param && test_bit(IS_ST_STREAM_ON, &is->state))
668 		return fimc_is_itf_s_param(is, true);
669 
670 	return 0;
671 }
672 
673 static const struct v4l2_ctrl_ops fimc_isp_ctrl_ops = {
674 	.s_ctrl	= fimc_is_s_ctrl,
675 };
676 
__isp_subdev_set_default_format(struct fimc_isp * isp)677 static void __isp_subdev_set_default_format(struct fimc_isp *isp)
678 {
679 	struct fimc_is *is = fimc_isp_to_is(isp);
680 
681 	isp->sink_fmt.width = DEFAULT_PREVIEW_STILL_WIDTH +
682 				FIMC_ISP_CAC_MARGIN_WIDTH;
683 	isp->sink_fmt.height = DEFAULT_PREVIEW_STILL_HEIGHT +
684 				FIMC_ISP_CAC_MARGIN_HEIGHT;
685 	isp->sink_fmt.code = MEDIA_BUS_FMT_SGRBG10_1X10;
686 
687 	isp->src_fmt.width = DEFAULT_PREVIEW_STILL_WIDTH;
688 	isp->src_fmt.height = DEFAULT_PREVIEW_STILL_HEIGHT;
689 	isp->src_fmt.code = MEDIA_BUS_FMT_SGRBG10_1X10;
690 	__is_set_frame_size(is, &isp->src_fmt);
691 }
692 
fimc_isp_subdev_create(struct fimc_isp * isp)693 int fimc_isp_subdev_create(struct fimc_isp *isp)
694 {
695 	const struct v4l2_ctrl_ops *ops = &fimc_isp_ctrl_ops;
696 	struct v4l2_ctrl_handler *handler = &isp->ctrls.handler;
697 	struct v4l2_subdev *sd = &isp->subdev;
698 	struct fimc_isp_ctrls *ctrls = &isp->ctrls;
699 	int ret;
700 
701 	mutex_init(&isp->subdev_lock);
702 
703 	v4l2_subdev_init(sd, &fimc_is_subdev_ops);
704 
705 	sd->owner = THIS_MODULE;
706 	sd->grp_id = GRP_ID_FIMC_IS;
707 	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
708 	snprintf(sd->name, sizeof(sd->name), "FIMC-IS-ISP");
709 
710 	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER;
711 	isp->subdev_pads[FIMC_ISP_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
712 	isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_FIFO].flags = MEDIA_PAD_FL_SOURCE;
713 	isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_DMA].flags = MEDIA_PAD_FL_SOURCE;
714 	ret = media_entity_pads_init(&sd->entity, FIMC_ISP_SD_PADS_NUM,
715 				isp->subdev_pads);
716 	if (ret)
717 		return ret;
718 
719 	v4l2_ctrl_handler_init(handler, 20);
720 
721 	ctrls->saturation = v4l2_ctrl_new_std(handler, ops, V4L2_CID_SATURATION,
722 						-2, 2, 1, 0);
723 	ctrls->brightness = v4l2_ctrl_new_std(handler, ops, V4L2_CID_BRIGHTNESS,
724 						-4, 4, 1, 0);
725 	ctrls->contrast = v4l2_ctrl_new_std(handler, ops, V4L2_CID_CONTRAST,
726 						-2, 2, 1, 0);
727 	ctrls->sharpness = v4l2_ctrl_new_std(handler, ops, V4L2_CID_SHARPNESS,
728 						-2, 2, 1, 0);
729 	ctrls->hue = v4l2_ctrl_new_std(handler, ops, V4L2_CID_HUE,
730 						-2, 2, 1, 0);
731 
732 	ctrls->auto_wb = v4l2_ctrl_new_std_menu(handler, ops,
733 					V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE,
734 					8, ~0x14e, V4L2_WHITE_BALANCE_AUTO);
735 
736 	ctrls->exposure = v4l2_ctrl_new_std(handler, ops,
737 					V4L2_CID_EXPOSURE_ABSOLUTE,
738 					-4, 4, 1, 0);
739 
740 	ctrls->exp_metering = v4l2_ctrl_new_std_menu(handler, ops,
741 					V4L2_CID_EXPOSURE_METERING, 3,
742 					~0xf, V4L2_EXPOSURE_METERING_AVERAGE);
743 
744 	v4l2_ctrl_new_std_menu(handler, ops, V4L2_CID_POWER_LINE_FREQUENCY,
745 					V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
746 					V4L2_CID_POWER_LINE_FREQUENCY_AUTO);
747 	/* ISO sensitivity */
748 	ctrls->auto_iso = v4l2_ctrl_new_std_menu(handler, ops,
749 			V4L2_CID_ISO_SENSITIVITY_AUTO, 1, 0,
750 			V4L2_ISO_SENSITIVITY_AUTO);
751 
752 	ctrls->iso = v4l2_ctrl_new_int_menu(handler, ops,
753 			V4L2_CID_ISO_SENSITIVITY, ARRAY_SIZE(iso_qmenu) - 1,
754 			ARRAY_SIZE(iso_qmenu)/2 - 1, iso_qmenu);
755 
756 	ctrls->aewb_lock = v4l2_ctrl_new_std(handler, ops,
757 					V4L2_CID_3A_LOCK, 0, 0x3, 0, 0);
758 
759 	/* TODO: Add support for NEGATIVE_COLOR option */
760 	ctrls->colorfx = v4l2_ctrl_new_std_menu(handler, ops, V4L2_CID_COLORFX,
761 			V4L2_COLORFX_SET_CBCR + 1, ~0x1000f, V4L2_COLORFX_NONE);
762 
763 	if (handler->error) {
764 		media_entity_cleanup(&sd->entity);
765 		return handler->error;
766 	}
767 
768 	v4l2_ctrl_auto_cluster(2, &ctrls->auto_iso,
769 			V4L2_ISO_SENSITIVITY_MANUAL, false);
770 
771 	sd->ctrl_handler = handler;
772 	sd->internal_ops = &fimc_is_subdev_internal_ops;
773 	sd->entity.ops = &fimc_is_subdev_media_ops;
774 	v4l2_set_subdevdata(sd, isp);
775 
776 	__isp_subdev_set_default_format(isp);
777 
778 	return 0;
779 }
780 
fimc_isp_subdev_destroy(struct fimc_isp * isp)781 void fimc_isp_subdev_destroy(struct fimc_isp *isp)
782 {
783 	struct v4l2_subdev *sd = &isp->subdev;
784 
785 	v4l2_device_unregister_subdev(sd);
786 	media_entity_cleanup(&sd->entity);
787 	v4l2_ctrl_handler_free(&isp->ctrls.handler);
788 	v4l2_set_subdevdata(sd, NULL);
789 }
790