1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * vimc-sensor.c Virtual Media Controller Driver
5 * Copyright (C) 2015-2017 Helen Koike <helen.fornazier@gmail.com>
8 #include <linux/v4l2-mediabus.h>
9 #include <linux/vmalloc.h>
10 #include <media/v4l2-ctrls.h>
11 #include <media/v4l2-event.h>
12 #include <media/v4l2-subdev.h>
13 #include <media/tpg/v4l2-tpg.h>
15 #include "vimc-common.h"
17 enum vimc_sensor_osd_mode {
18 VIMC_SENSOR_OSD_SHOW_ALL = 0,
19 VIMC_SENSOR_OSD_SHOW_COUNTERS = 1,
20 VIMC_SENSOR_OSD_SHOW_NONE = 2
23 struct vimc_sensor_device {
24 struct vimc_ent_device ved;
25 struct v4l2_subdev sd;
28 enum vimc_sensor_osd_mode osd_value;
30 /* The active format */
31 struct v4l2_mbus_framefmt mbus_format;
32 struct v4l2_ctrl_handler hdl;
36 static const struct v4l2_mbus_framefmt fmt_default = {
39 .code = MEDIA_BUS_FMT_RGB888_1X24,
40 .field = V4L2_FIELD_NONE,
41 .colorspace = V4L2_COLORSPACE_SRGB,
44 static int vimc_sensor_init_state(struct v4l2_subdev *sd,
45 struct v4l2_subdev_state *sd_state)
49 for (i = 0; i < sd->entity.num_pads; i++) {
50 struct v4l2_mbus_framefmt *mf;
52 mf = v4l2_subdev_state_get_format(sd_state, i);
59 static int vimc_sensor_enum_mbus_code(struct v4l2_subdev *sd,
60 struct v4l2_subdev_state *sd_state,
61 struct v4l2_subdev_mbus_code_enum *code)
63 u32 mbus_code = vimc_mbus_code_by_index(code->index);
68 code->code = mbus_code;
73 static int vimc_sensor_enum_frame_size(struct v4l2_subdev *sd,
74 struct v4l2_subdev_state *sd_state,
75 struct v4l2_subdev_frame_size_enum *fse)
77 const struct vimc_pix_map *vpix;
82 /* Only accept code in the pix map table */
83 vpix = vimc_pix_map_by_code(fse->code);
87 fse->min_width = VIMC_FRAME_MIN_WIDTH;
88 fse->max_width = VIMC_FRAME_MAX_WIDTH;
89 fse->min_height = VIMC_FRAME_MIN_HEIGHT;
90 fse->max_height = VIMC_FRAME_MAX_HEIGHT;
95 static int vimc_sensor_get_fmt(struct v4l2_subdev *sd,
96 struct v4l2_subdev_state *sd_state,
97 struct v4l2_subdev_format *fmt)
99 struct vimc_sensor_device *vsensor =
100 container_of(sd, struct vimc_sensor_device, sd);
102 fmt->format = fmt->which == V4L2_SUBDEV_FORMAT_TRY ?
103 *v4l2_subdev_state_get_format(sd_state, fmt->pad) :
104 vsensor->mbus_format;
109 static void vimc_sensor_tpg_s_format(struct vimc_sensor_device *vsensor)
111 const struct vimc_pix_map *vpix =
112 vimc_pix_map_by_code(vsensor->mbus_format.code);
114 tpg_reset_source(&vsensor->tpg, vsensor->mbus_format.width,
115 vsensor->mbus_format.height, vsensor->mbus_format.field);
116 tpg_s_bytesperline(&vsensor->tpg, 0, vsensor->mbus_format.width * vpix->bpp);
117 tpg_s_buf_height(&vsensor->tpg, vsensor->mbus_format.height);
118 tpg_s_fourcc(&vsensor->tpg, vpix->pixelformat);
119 /* TODO: add support for V4L2_FIELD_ALTERNATE */
120 tpg_s_field(&vsensor->tpg, vsensor->mbus_format.field, false);
121 tpg_s_colorspace(&vsensor->tpg, vsensor->mbus_format.colorspace);
122 tpg_s_ycbcr_enc(&vsensor->tpg, vsensor->mbus_format.ycbcr_enc);
123 tpg_s_quantization(&vsensor->tpg, vsensor->mbus_format.quantization);
124 tpg_s_xfer_func(&vsensor->tpg, vsensor->mbus_format.xfer_func);
127 static void vimc_sensor_adjust_fmt(struct v4l2_mbus_framefmt *fmt)
129 const struct vimc_pix_map *vpix;
131 /* Only accept code in the pix map table */
132 vpix = vimc_pix_map_by_code(fmt->code);
134 fmt->code = fmt_default.code;
136 fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH,
137 VIMC_FRAME_MAX_WIDTH) & ~1;
138 fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT,
139 VIMC_FRAME_MAX_HEIGHT) & ~1;
141 /* TODO: add support for V4L2_FIELD_ALTERNATE */
142 if (fmt->field == V4L2_FIELD_ANY || fmt->field == V4L2_FIELD_ALTERNATE)
143 fmt->field = fmt_default.field;
145 vimc_colorimetry_clamp(fmt);
148 static int vimc_sensor_set_fmt(struct v4l2_subdev *sd,
149 struct v4l2_subdev_state *sd_state,
150 struct v4l2_subdev_format *fmt)
152 struct vimc_sensor_device *vsensor = v4l2_get_subdevdata(sd);
153 struct v4l2_mbus_framefmt *mf;
155 if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
156 /* Do not change the format while stream is on */
160 mf = &vsensor->mbus_format;
162 mf = v4l2_subdev_state_get_format(sd_state, fmt->pad);
165 /* Set the new format */
166 vimc_sensor_adjust_fmt(&fmt->format);
168 dev_dbg(vsensor->ved.dev, "%s: format update: "
169 "old:%dx%d (0x%x, %d, %d, %d, %d) "
170 "new:%dx%d (0x%x, %d, %d, %d, %d)\n", vsensor->sd.name,
172 mf->width, mf->height, mf->code,
173 mf->colorspace, mf->quantization,
174 mf->xfer_func, mf->ycbcr_enc,
176 fmt->format.width, fmt->format.height, fmt->format.code,
177 fmt->format.colorspace, fmt->format.quantization,
178 fmt->format.xfer_func, fmt->format.ycbcr_enc);
185 static const struct v4l2_subdev_pad_ops vimc_sensor_pad_ops = {
186 .enum_mbus_code = vimc_sensor_enum_mbus_code,
187 .enum_frame_size = vimc_sensor_enum_frame_size,
188 .get_fmt = vimc_sensor_get_fmt,
189 .set_fmt = vimc_sensor_set_fmt,
192 static void *vimc_sensor_process_frame(struct vimc_ent_device *ved,
193 const void *sink_frame)
195 struct vimc_sensor_device *vsensor =
196 container_of(ved, struct vimc_sensor_device, ved);
198 const unsigned int line_height = 16;
199 u8 *basep[TPG_MAX_PLANES][2];
200 unsigned int line = 1;
203 tpg_fill_plane_buffer(&vsensor->tpg, 0, 0, vsensor->frame);
204 tpg_calc_text_basep(&vsensor->tpg, basep, 0, vsensor->frame);
205 switch (vsensor->osd_value) {
206 case VIMC_SENSOR_OSD_SHOW_ALL: {
207 const char *order = tpg_g_color_order(&vsensor->tpg);
209 tpg_gen_text(&vsensor->tpg, basep, line++ * line_height,
211 snprintf(str, sizeof(str),
212 "brightness %3d, contrast %3d, saturation %3d, hue %d ",
213 vsensor->tpg.brightness,
214 vsensor->tpg.contrast,
215 vsensor->tpg.saturation,
217 tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str);
218 snprintf(str, sizeof(str), "sensor size: %dx%d",
219 vsensor->mbus_format.width,
220 vsensor->mbus_format.height);
221 tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str);
224 case VIMC_SENSOR_OSD_SHOW_COUNTERS: {
227 ms = div_u64(ktime_get_ns() - vsensor->start_stream_ts, 1000000);
228 snprintf(str, sizeof(str), "%02d:%02d:%02d:%03d",
229 (ms / (60 * 60 * 1000)) % 24,
230 (ms / (60 * 1000)) % 60,
233 tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str);
236 case VIMC_SENSOR_OSD_SHOW_NONE:
241 return vsensor->frame;
244 static int vimc_sensor_s_stream(struct v4l2_subdev *sd, int enable)
246 struct vimc_sensor_device *vsensor =
247 container_of(sd, struct vimc_sensor_device, sd);
250 const struct vimc_pix_map *vpix;
251 unsigned int frame_size;
253 vsensor->start_stream_ts = ktime_get_ns();
255 /* Calculate the frame size */
256 vpix = vimc_pix_map_by_code(vsensor->mbus_format.code);
257 frame_size = vsensor->mbus_format.width * vpix->bpp *
258 vsensor->mbus_format.height;
261 * Allocate the frame buffer. Use vmalloc to be able to
262 * allocate a large amount of memory
264 vsensor->frame = vmalloc(frame_size);
268 /* configure the test pattern generator */
269 vimc_sensor_tpg_s_format(vsensor);
273 vfree(vsensor->frame);
274 vsensor->frame = NULL;
280 static const struct v4l2_subdev_core_ops vimc_sensor_core_ops = {
281 .log_status = v4l2_ctrl_subdev_log_status,
282 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
283 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
286 static const struct v4l2_subdev_video_ops vimc_sensor_video_ops = {
287 .s_stream = vimc_sensor_s_stream,
290 static const struct v4l2_subdev_ops vimc_sensor_ops = {
291 .core = &vimc_sensor_core_ops,
292 .pad = &vimc_sensor_pad_ops,
293 .video = &vimc_sensor_video_ops,
296 static const struct v4l2_subdev_internal_ops vimc_sensor_internal_ops = {
297 .init_state = vimc_sensor_init_state,
300 static int vimc_sensor_s_ctrl(struct v4l2_ctrl *ctrl)
302 struct vimc_sensor_device *vsensor =
303 container_of(ctrl->handler, struct vimc_sensor_device, hdl);
306 case VIMC_CID_TEST_PATTERN:
307 tpg_s_pattern(&vsensor->tpg, ctrl->val);
310 tpg_s_hflip(&vsensor->tpg, ctrl->val);
313 tpg_s_vflip(&vsensor->tpg, ctrl->val);
315 case V4L2_CID_BRIGHTNESS:
316 tpg_s_brightness(&vsensor->tpg, ctrl->val);
318 case V4L2_CID_CONTRAST:
319 tpg_s_contrast(&vsensor->tpg, ctrl->val);
322 tpg_s_hue(&vsensor->tpg, ctrl->val);
324 case V4L2_CID_SATURATION:
325 tpg_s_saturation(&vsensor->tpg, ctrl->val);
327 case VIMC_CID_OSD_TEXT_MODE:
328 vsensor->osd_value = ctrl->val;
336 static const struct v4l2_ctrl_ops vimc_sensor_ctrl_ops = {
337 .s_ctrl = vimc_sensor_s_ctrl,
340 static void vimc_sensor_release(struct vimc_ent_device *ved)
342 struct vimc_sensor_device *vsensor =
343 container_of(ved, struct vimc_sensor_device, ved);
345 v4l2_ctrl_handler_free(&vsensor->hdl);
346 tpg_free(&vsensor->tpg);
347 media_entity_cleanup(vsensor->ved.ent);
351 /* Image Processing Controls */
352 static const struct v4l2_ctrl_config vimc_sensor_ctrl_class = {
353 .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY,
354 .id = VIMC_CID_VIMC_CLASS,
355 .name = "VIMC Controls",
356 .type = V4L2_CTRL_TYPE_CTRL_CLASS,
359 static const struct v4l2_ctrl_config vimc_sensor_ctrl_test_pattern = {
360 .ops = &vimc_sensor_ctrl_ops,
361 .id = VIMC_CID_TEST_PATTERN,
362 .name = "Test Pattern",
363 .type = V4L2_CTRL_TYPE_MENU,
364 .max = TPG_PAT_NOISE,
365 .qmenu = tpg_pattern_strings,
368 static const char * const vimc_ctrl_osd_mode_strings[] = {
375 static const struct v4l2_ctrl_config vimc_sensor_ctrl_osd_mode = {
376 .ops = &vimc_sensor_ctrl_ops,
377 .id = VIMC_CID_OSD_TEXT_MODE,
378 .name = "Show Information",
379 .type = V4L2_CTRL_TYPE_MENU,
380 .max = ARRAY_SIZE(vimc_ctrl_osd_mode_strings) - 2,
381 .qmenu = vimc_ctrl_osd_mode_strings,
384 static struct vimc_ent_device *vimc_sensor_add(struct vimc_device *vimc,
385 const char *vcfg_name)
387 struct v4l2_device *v4l2_dev = &vimc->v4l2_dev;
388 struct vimc_sensor_device *vsensor;
391 /* Allocate the vsensor struct */
392 vsensor = kzalloc(sizeof(*vsensor), GFP_KERNEL);
394 return ERR_PTR(-ENOMEM);
396 v4l2_ctrl_handler_init(&vsensor->hdl, 4);
398 v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_class, NULL);
399 v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_test_pattern, NULL);
400 v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_osd_mode, NULL);
401 v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
402 V4L2_CID_VFLIP, 0, 1, 1, 0);
403 v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
404 V4L2_CID_HFLIP, 0, 1, 1, 0);
405 v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
406 V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
407 v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
408 V4L2_CID_CONTRAST, 0, 255, 1, 128);
409 v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
410 V4L2_CID_HUE, -128, 127, 1, 0);
411 v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops,
412 V4L2_CID_SATURATION, 0, 255, 1, 128);
413 vsensor->sd.ctrl_handler = &vsensor->hdl;
414 if (vsensor->hdl.error) {
415 ret = vsensor->hdl.error;
416 goto err_free_vsensor;
419 /* Initialize the test pattern generator */
420 tpg_init(&vsensor->tpg, vsensor->mbus_format.width,
421 vsensor->mbus_format.height);
422 ret = tpg_alloc(&vsensor->tpg, VIMC_FRAME_MAX_WIDTH);
426 /* Initialize ved and sd */
427 vsensor->pad.flags = MEDIA_PAD_FL_SOURCE;
428 ret = vimc_ent_sd_register(&vsensor->ved, &vsensor->sd, v4l2_dev,
430 MEDIA_ENT_F_CAM_SENSOR, 1, &vsensor->pad,
435 vsensor->sd.internal_ops = &vimc_sensor_internal_ops;
437 vsensor->ved.process_frame = vimc_sensor_process_frame;
438 vsensor->ved.dev = vimc->mdev.dev;
440 /* Initialize the frame format */
441 vsensor->mbus_format = fmt_default;
443 return &vsensor->ved;
446 tpg_free(&vsensor->tpg);
448 v4l2_ctrl_handler_free(&vsensor->hdl);
455 struct vimc_ent_type vimc_sensor_type = {
456 .add = vimc_sensor_add,
457 .release = vimc_sensor_release