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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#include <linux/v4l2-mediabus.h>#include <linux/vmalloc.h>#include <media/v4l2-ctrls.h>#include <media/v4l2-event.h>#include <media/v4l2-subdev.h>#include <media/tpg/v4l2-tpg.h>
#include "vimc-common.h"
static const struct v4l2_mbus_framefmt fmt_default = { .width = 640, .height = 480, .code = MEDIA_BUS_FMT_RGB888_1X24, .field = V4L2_FIELD_NONE, .colorspace = V4L2_COLORSPACE_SRGB,};
static int vimc_sensor_init_state(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state){ struct vimc_sensor_device *vsensor = container_of(sd, struct vimc_sensor_device, sd);
struct v4l2_mbus_framefmt *mf;
mf = v4l2_subdev_state_get_format(sd_state, 0); *mf = fmt_default; vsensor->hw.size.width = fmt_default.width; vsensor->hw.size.height = fmt_default.height;
return 0;}
static int vimc_sensor_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code){ u32 mbus_code = vimc_mbus_code_by_index(code->index);
if (!mbus_code) return -EINVAL;
code->code = mbus_code;
return 0;}
static int vimc_sensor_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_frame_size_enum *fse){ const struct vimc_pix_map *vpix;
if (fse->index) return -EINVAL;
/* Only accept code in the pix map table */ vpix = vimc_pix_map_by_code(fse->code); if (!vpix) return -EINVAL;
fse->min_width = VIMC_FRAME_MIN_WIDTH; fse->max_width = VIMC_FRAME_MAX_WIDTH; fse->min_height = VIMC_FRAME_MIN_HEIGHT; fse->max_height = VIMC_FRAME_MAX_HEIGHT;
return 0;}
static void vimc_sensor_tpg_s_format(struct vimc_sensor_device *vsensor, const struct v4l2_mbus_framefmt *format){ const struct vimc_pix_map *vpix = vimc_pix_map_by_code(format->code);
tpg_reset_source(&vsensor->tpg, format->width, format->height, format->field); tpg_s_bytesperline(&vsensor->tpg, 0, format->width * vpix->bpp); tpg_s_buf_height(&vsensor->tpg, format->height); tpg_s_fourcc(&vsensor->tpg, vpix->pixelformat); /* TODO: add support for V4L2_FIELD_ALTERNATE */ tpg_s_field(&vsensor->tpg, format->field, false); tpg_s_colorspace(&vsensor->tpg, format->colorspace); tpg_s_ycbcr_enc(&vsensor->tpg, format->ycbcr_enc); tpg_s_quantization(&vsensor->tpg, format->quantization); tpg_s_xfer_func(&vsensor->tpg, format->xfer_func);}
static int vimc_sensor_update_frame_timing(struct v4l2_subdev *sd, u32 width, u32 height){ struct vimc_sensor_device *vsensor = container_of(sd, struct vimc_sensor_device, sd); u64 pixel_rate = vsensor->pixel_rate->val; u32 hts = width + vsensor->hblank->val; u32 vts = height + vsensor->vblank->val; u64 total_pixels = (u64)hts * vts; u64 frame_interval_ns;
frame_interval_ns = total_pixels * NSEC_PER_SEC; do_div(frame_interval_ns, pixel_rate); vsensor->hw.fps_jiffies = nsecs_to_jiffies(frame_interval_ns); if (vsensor->hw.fps_jiffies == 0) vsensor->hw.fps_jiffies = 1;
return 0;}
static void vimc_sensor_adjust_fmt(struct v4l2_mbus_framefmt *fmt){ const struct vimc_pix_map *vpix;
/* Only accept code in the pix map table */ vpix = vimc_pix_map_by_code(fmt->code); if (!vpix) fmt->code = fmt_default.code;
fmt->width = clamp_t(u32, fmt->width, VIMC_FRAME_MIN_WIDTH, VIMC_FRAME_MAX_WIDTH) & ~1; fmt->height = clamp_t(u32, fmt->height, VIMC_FRAME_MIN_HEIGHT, VIMC_FRAME_MAX_HEIGHT) & ~1;
/* TODO: add support for V4L2_FIELD_ALTERNATE */ if (fmt->field == V4L2_FIELD_ANY || fmt->field == V4L2_FIELD_ALTERNATE) fmt->field = fmt_default.field;
vimc_colorimetry_clamp(fmt);}
static u32 vimc_calc_vblank(u32 width, u32 height, s64 pixel_rate, s32 hblank){ u32 hts = width + hblank; u32 target_fps; u64 vts;
target_fps = (width * height <= VIMC_PIXELS_THRESHOLD_30FPS) ? 30 : 10;
vts = (u64)pixel_rate; do_div(vts, target_fps * hts);
if (vts > height) return clamp((u32)(vts - height), VIMC_VBLANK_MIN, VIMC_VBLANK_MAX);
return VIMC_VBLANK_MIN;}
static int vimc_sensor_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *fmt){ struct vimc_sensor_device *vsensor = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *mf;
/* Do not change the format while stream is on */ if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE && vsensor->frame) return -EBUSY;
mf = v4l2_subdev_state_get_format(sd_state, fmt->pad);
/* Set the new format */ vimc_sensor_adjust_fmt(&fmt->format);
dev_dbg(vsensor->ved.dev, "%s: format update: " "old:%dx%d (0x%x, %d, %d, %d, %d) " "new:%dx%d (0x%x, %d, %d, %d, %d)\n", vsensor->sd.name, /* old */ mf->width, mf->height, mf->code, mf->colorspace, mf->quantization, mf->xfer_func, mf->ycbcr_enc, /* new */ fmt->format.width, fmt->format.height, fmt->format.code, fmt->format.colorspace, fmt->format.quantization, fmt->format.xfer_func, fmt->format.ycbcr_enc);
*mf = fmt->format; if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { u32 vblank_def = vimc_calc_vblank(fmt->format.width, fmt->format.height, vsensor->pixel_rate->val, vsensor->hblank->val); vsensor->hw.size.width = fmt->format.width; vsensor->hw.size.height = fmt->format.height; __v4l2_ctrl_modify_range(vsensor->vblank, VIMC_VBLANK_MIN, VIMC_VBLANK_MAX, VIMC_VBLANK_STEP, vblank_def); __v4l2_ctrl_s_ctrl(vsensor->vblank, vblank_def); }
return 0;}
static const struct v4l2_subdev_pad_ops vimc_sensor_pad_ops = { .enum_mbus_code = vimc_sensor_enum_mbus_code, .enum_frame_size = vimc_sensor_enum_frame_size, .get_fmt = v4l2_subdev_get_fmt, .set_fmt = vimc_sensor_set_fmt,};
static void *vimc_sensor_process_frame(struct vimc_ent_device *ved, const void *sink_frame){ struct vimc_sensor_device *vsensor = container_of(ved, struct vimc_sensor_device, ved);
const unsigned int line_height = 16; u8 *basep[TPG_MAX_PLANES][2]; unsigned int line = 1; char str[100];
tpg_fill_plane_buffer(&vsensor->tpg, 0, 0, vsensor->frame); tpg_calc_text_basep(&vsensor->tpg, basep, 0, vsensor->frame); switch (vsensor->hw.osd_value) { case VIMC_SENSOR_OSD_SHOW_ALL: { const char *order = tpg_g_color_order(&vsensor->tpg);
tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, order); snprintf(str, sizeof(str), "brightness %3d, contrast %3d, saturation %3d, hue %d ", vsensor->tpg.brightness, vsensor->tpg.contrast, vsensor->tpg.saturation, vsensor->tpg.hue); tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str); snprintf(str, sizeof(str), "sensor size: %dx%d", vsensor->hw.size.width, vsensor->hw.size.height); tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str); fallthrough; } case VIMC_SENSOR_OSD_SHOW_COUNTERS: { unsigned int ms;
ms = div_u64(ktime_get_ns() - vsensor->hw.start_stream_ts, 1000000); snprintf(str, sizeof(str), "%02d:%02d:%02d:%03d", (ms / (60 * 60 * 1000)) % 24, (ms / (60 * 1000)) % 60, (ms / 1000) % 60, ms % 1000); tpg_gen_text(&vsensor->tpg, basep, line++ * line_height, 16, str); break; } case VIMC_SENSOR_OSD_SHOW_NONE: default: break; }
return vsensor->frame;}
static int vimc_sensor_s_stream(struct v4l2_subdev *sd, int enable){ struct vimc_sensor_device *vsensor = container_of(sd, struct vimc_sensor_device, sd);
if (enable) { const struct v4l2_mbus_framefmt *format; struct v4l2_subdev_state *state; const struct vimc_pix_map *vpix; unsigned int frame_size;
state = v4l2_subdev_lock_and_get_active_state(sd); format = v4l2_subdev_state_get_format(state, 0);
/* Configure the test pattern generator. */ vimc_sensor_tpg_s_format(vsensor, format);
/* Calculate the frame size. */ vpix = vimc_pix_map_by_code(format->code); frame_size = format->width * vpix->bpp * format->height;
vsensor->hw.size.width = format->width; vsensor->hw.size.height = format->height; vimc_sensor_update_frame_timing(sd, format->width, format->height);
v4l2_subdev_unlock_state(state);
/* * Allocate the frame buffer. Use vmalloc to be able to * allocate a large amount of memory */ vsensor->frame = vmalloc(frame_size); if (!vsensor->frame) return -ENOMEM;
vsensor->hw.start_stream_ts = ktime_get_ns(); } else {
vfree(vsensor->frame); vsensor->frame = NULL; }
return 0;}
static const struct v4l2_subdev_core_ops vimc_sensor_core_ops = { .log_status = v4l2_ctrl_subdev_log_status, .subscribe_event = v4l2_ctrl_subdev_subscribe_event, .unsubscribe_event = v4l2_event_subdev_unsubscribe,};
static const struct v4l2_subdev_video_ops vimc_sensor_video_ops = { .s_stream = vimc_sensor_s_stream,};
static const struct v4l2_subdev_ops vimc_sensor_ops = { .core = &vimc_sensor_core_ops, .pad = &vimc_sensor_pad_ops, .video = &vimc_sensor_video_ops,};
static const struct v4l2_subdev_internal_ops vimc_sensor_internal_ops = { .init_state = vimc_sensor_init_state,};
static int vimc_sensor_s_ctrl(struct v4l2_ctrl *ctrl){ struct vimc_sensor_device *vsensor = container_of(ctrl->handler, struct vimc_sensor_device, hdl);
switch (ctrl->id) { case VIMC_CID_TEST_PATTERN: tpg_s_pattern(&vsensor->tpg, ctrl->val); break; case V4L2_CID_HFLIP: tpg_s_hflip(&vsensor->tpg, ctrl->val); break; case V4L2_CID_VFLIP: tpg_s_vflip(&vsensor->tpg, ctrl->val); break; case V4L2_CID_BRIGHTNESS: tpg_s_brightness(&vsensor->tpg, ctrl->val); break; case V4L2_CID_CONTRAST: tpg_s_contrast(&vsensor->tpg, ctrl->val); break; case V4L2_CID_HUE: tpg_s_hue(&vsensor->tpg, ctrl->val); break; case V4L2_CID_SATURATION: tpg_s_saturation(&vsensor->tpg, ctrl->val); break; case VIMC_CID_OSD_TEXT_MODE: vsensor->hw.osd_value = ctrl->val; break; case V4L2_CID_PIXEL_RATE: break; case V4L2_CID_HBLANK: break; case V4L2_CID_VBLANK: vimc_sensor_update_frame_timing(&vsensor->sd, vsensor->hw.size.width, vsensor->hw.size.height); break; default: return -EINVAL; } return 0;}
static const struct v4l2_ctrl_ops vimc_sensor_ctrl_ops = { .s_ctrl = vimc_sensor_s_ctrl,};
static void vimc_sensor_release(struct vimc_ent_device *ved){ struct vimc_sensor_device *vsensor = container_of(ved, struct vimc_sensor_device, ved);
v4l2_ctrl_handler_free(&vsensor->hdl); tpg_free(&vsensor->tpg); v4l2_subdev_cleanup(&vsensor->sd); media_entity_cleanup(vsensor->ved.ent); kfree(vsensor);}
/* Image Processing Controls */static const struct v4l2_ctrl_config vimc_sensor_ctrl_class = { .flags = V4L2_CTRL_FLAG_READ_ONLY | V4L2_CTRL_FLAG_WRITE_ONLY, .id = VIMC_CID_VIMC_CLASS, .name = "VIMC Controls", .type = V4L2_CTRL_TYPE_CTRL_CLASS,};
static const struct v4l2_ctrl_config vimc_sensor_ctrl_test_pattern = { .ops = &vimc_sensor_ctrl_ops, .id = VIMC_CID_TEST_PATTERN, .name = "Test Pattern", .type = V4L2_CTRL_TYPE_MENU, .max = TPG_PAT_NOISE, .qmenu = tpg_pattern_strings,};
static const char * const vimc_ctrl_osd_mode_strings[] = { "All", "Counters Only", "None", NULL,};
static const struct v4l2_ctrl_config vimc_sensor_ctrl_osd_mode = { .ops = &vimc_sensor_ctrl_ops, .id = VIMC_CID_OSD_TEXT_MODE, .name = "Show Information", .type = V4L2_CTRL_TYPE_MENU, .max = ARRAY_SIZE(vimc_ctrl_osd_mode_strings) - 2, .qmenu = vimc_ctrl_osd_mode_strings,};
static struct vimc_ent_device *vimc_sensor_add(struct vimc_device *vimc, const char *vcfg_name){ struct v4l2_device *v4l2_dev = &vimc->v4l2_dev; struct vimc_sensor_device *vsensor; int ret;
/* Allocate the vsensor struct */ vsensor = kzalloc_obj(*vsensor); if (!vsensor) return ERR_PTR(-ENOMEM);
v4l2_ctrl_handler_init(&vsensor->hdl, 4);
v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_class, NULL); v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_test_pattern, NULL); v4l2_ctrl_new_custom(&vsensor->hdl, &vimc_sensor_ctrl_osd_mode, NULL); v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_BRIGHTNESS, 0, 255, 1, 128); v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_CONTRAST, 0, 255, 1, 128); v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_HUE, -128, 127, 1, 0); v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_SATURATION, 0, 255, 1, 128); /* Timing controls for frame interval configuration */ vsensor->pixel_rate = v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_PIXEL_RATE, VIMC_PIXEL_RATE_FIXED, VIMC_PIXEL_RATE_FIXED, 1, VIMC_PIXEL_RATE_FIXED); if (vsensor->pixel_rate) vsensor->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;
vsensor->hblank = v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_HBLANK, VIMC_HBLANK_FIXED, VIMC_HBLANK_FIXED, 1, VIMC_HBLANK_FIXED); if (vsensor->hblank) vsensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
vsensor->vblank = v4l2_ctrl_new_std(&vsensor->hdl, &vimc_sensor_ctrl_ops, V4L2_CID_VBLANK, VIMC_VBLANK_MIN, VIMC_VBLANK_MAX, VIMC_VBLANK_STEP, VIMC_VBLANK_DEFAULT);
vsensor->sd.ctrl_handler = &vsensor->hdl; if (vsensor->hdl.error) { ret = vsensor->hdl.error; goto err_free_vsensor; }
/* Initialize the test pattern generator */ tpg_init(&vsensor->tpg, fmt_default.width, fmt_default.height); ret = tpg_alloc(&vsensor->tpg, VIMC_FRAME_MAX_WIDTH); if (ret) goto err_free_hdl;
/* Initialize ved and sd */ vsensor->pad.flags = MEDIA_PAD_FL_SOURCE; ret = vimc_ent_sd_register(&vsensor->ved, &vsensor->sd, v4l2_dev, vcfg_name, MEDIA_ENT_F_CAM_SENSOR, 1, &vsensor->pad, &vimc_sensor_internal_ops, &vimc_sensor_ops); if (ret) goto err_free_tpg;
vsensor->ved.process_frame = vimc_sensor_process_frame; vsensor->ved.dev = vimc->mdev.dev;
return &vsensor->ved;
err_free_tpg: tpg_free(&vsensor->tpg);err_free_hdl: v4l2_ctrl_handler_free(&vsensor->hdl);err_free_vsensor: kfree(vsensor);
return ERR_PTR(ret);}
const struct vimc_ent_type vimc_sensor_type = { .add = vimc_sensor_add, .release = vimc_sensor_release};