/* * Xilinx Test Pattern Generator * * Copyright (C) 2013-2015 Ideas on Board * Copyright (C) 2013-2015 Xilinx, Inc. * * Contacts: Hyun Kwon * Laurent Pinchart * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include "xilinx-vip.h" #include "xilinx-vtc.h" #define XTPG_CTRL_STATUS_SLAVE_ERROR (1 << 16) #define XTPG_CTRL_IRQ_SLAVE_ERROR (1 << 16) #define XTPG_PATTERN_CONTROL 0x0100 #define XTPG_PATTERN_MASK (0xf << 0) #define XTPG_PATTERN_CONTROL_CROSS_HAIRS (1 << 4) #define XTPG_PATTERN_CONTROL_MOVING_BOX (1 << 5) #define XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT 6 #define XTPG_PATTERN_CONTROL_COLOR_MASK_MASK (0xf << 6) #define XTPG_PATTERN_CONTROL_STUCK_PIXEL (1 << 9) #define XTPG_PATTERN_CONTROL_NOISE (1 << 10) #define XTPG_PATTERN_CONTROL_MOTION (1 << 12) #define XTPG_MOTION_SPEED 0x0104 #define XTPG_CROSS_HAIRS 0x0108 #define XTPG_CROSS_HAIRS_ROW_SHIFT 0 #define XTPG_CROSS_HAIRS_ROW_MASK (0xfff << 0) #define XTPG_CROSS_HAIRS_COLUMN_SHIFT 16 #define XTPG_CROSS_HAIRS_COLUMN_MASK (0xfff << 16) #define XTPG_ZPLATE_HOR_CONTROL 0x010c #define XTPG_ZPLATE_VER_CONTROL 0x0110 #define XTPG_ZPLATE_START_SHIFT 0 #define XTPG_ZPLATE_START_MASK (0xffff << 0) #define XTPG_ZPLATE_SPEED_SHIFT 16 #define XTPG_ZPLATE_SPEED_MASK (0xffff << 16) #define XTPG_BOX_SIZE 0x0114 #define XTPG_BOX_COLOR 0x0118 #define XTPG_STUCK_PIXEL_THRESH 0x011c #define XTPG_NOISE_GAIN 0x0120 #define XTPG_BAYER_PHASE 0x0124 #define XTPG_BAYER_PHASE_RGGB 0 #define XTPG_BAYER_PHASE_GRBG 1 #define XTPG_BAYER_PHASE_GBRG 2 #define XTPG_BAYER_PHASE_BGGR 3 #define XTPG_BAYER_PHASE_OFF 4 /* * The minimum blanking value is one clock cycle for the front porch, one clock * cycle for the sync pulse and one clock cycle for the back porch. */ #define XTPG_MIN_HBLANK 3 #define XTPG_MAX_HBLANK (XVTC_MAX_HSIZE - XVIP_MIN_WIDTH) #define XTPG_MIN_VBLANK 3 #define XTPG_MAX_VBLANK (XVTC_MAX_VSIZE - XVIP_MIN_HEIGHT) /** * struct xtpg_device - Xilinx Test Pattern Generator device structure * @xvip: Xilinx Video IP device * @pads: media pads * @npads: number of pads (1 or 2) * @has_input: whether an input is connected to the sink pad * @formats: active V4L2 media bus format for each pad * @default_format: default V4L2 media bus format * @vip_format: format information corresponding to the active format * @bayer: boolean flag if TPG is set to any bayer format * @ctrl_handler: control handler * @hblank: horizontal blanking control * @vblank: vertical blanking control * @pattern: test pattern control * @streaming: is the video stream active * @vtc: video timing controller * @vtmux_gpio: video timing mux GPIO */ struct xtpg_device { struct xvip_device xvip; struct media_pad pads[2]; unsigned int npads; bool has_input; struct v4l2_mbus_framefmt formats[2]; struct v4l2_mbus_framefmt default_format; const struct xvip_video_format *vip_format; bool bayer; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *hblank; struct v4l2_ctrl *vblank; struct v4l2_ctrl *pattern; bool streaming; struct xvtc_device *vtc; struct gpio_desc *vtmux_gpio; }; static inline struct xtpg_device *to_tpg(struct v4l2_subdev *subdev) { return container_of(subdev, struct xtpg_device, xvip.subdev); } static u32 xtpg_get_bayer_phase(unsigned int code) { switch (code) { case MEDIA_BUS_FMT_SRGGB8_1X8: return XTPG_BAYER_PHASE_RGGB; case MEDIA_BUS_FMT_SGRBG8_1X8: return XTPG_BAYER_PHASE_GRBG; case MEDIA_BUS_FMT_SGBRG8_1X8: return XTPG_BAYER_PHASE_GBRG; case MEDIA_BUS_FMT_SBGGR8_1X8: return XTPG_BAYER_PHASE_BGGR; default: return XTPG_BAYER_PHASE_OFF; } } static void __xtpg_update_pattern_control(struct xtpg_device *xtpg, bool passthrough, bool pattern) { u32 pattern_mask = (1 << (xtpg->pattern->maximum + 1)) - 1; /* * If the TPG has no sink pad or no input connected to its sink pad * passthrough mode can't be enabled. */ if (xtpg->npads == 1 || !xtpg->has_input) passthrough = false; /* If passthrough mode is allowed unmask bit 0. */ if (passthrough) pattern_mask &= ~1; /* If test pattern mode is allowed unmask all other bits. */ if (pattern) pattern_mask &= 1; __v4l2_ctrl_modify_range(xtpg->pattern, 0, xtpg->pattern->maximum, pattern_mask, pattern ? 9 : 0); } static void xtpg_update_pattern_control(struct xtpg_device *xtpg, bool passthrough, bool pattern) { mutex_lock(xtpg->ctrl_handler.lock); __xtpg_update_pattern_control(xtpg, passthrough, pattern); mutex_unlock(xtpg->ctrl_handler.lock); } /* ----------------------------------------------------------------------------- * V4L2 Subdevice Video Operations */ static int xtpg_s_stream(struct v4l2_subdev *subdev, int enable) { struct xtpg_device *xtpg = to_tpg(subdev); unsigned int width = xtpg->formats[0].width; unsigned int height = xtpg->formats[0].height; bool passthrough; u32 bayer_phase; if (!enable) { xvip_stop(&xtpg->xvip); if (xtpg->vtc) xvtc_generator_stop(xtpg->vtc); xtpg_update_pattern_control(xtpg, true, true); xtpg->streaming = false; return 0; } xvip_set_frame_size(&xtpg->xvip, &xtpg->formats[0]); if (xtpg->vtc) { struct xvtc_config config = { .hblank_start = width, .hsync_start = width + 1, .vblank_start = height, .vsync_start = height + 1, }; unsigned int htotal; unsigned int vtotal; htotal = min_t(unsigned int, XVTC_MAX_HSIZE, v4l2_ctrl_g_ctrl(xtpg->hblank) + width); vtotal = min_t(unsigned int, XVTC_MAX_VSIZE, v4l2_ctrl_g_ctrl(xtpg->vblank) + height); config.hsync_end = htotal - 1; config.hsize = htotal; config.vsync_end = vtotal - 1; config.vsize = vtotal; xvtc_generator_start(xtpg->vtc, &config); } /* * Configure the bayer phase and video timing mux based on the * operation mode (passthrough or test pattern generation). The test * pattern can be modified by the control set handler, we thus need to * take the control lock here to avoid races. */ mutex_lock(xtpg->ctrl_handler.lock); xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_MASK, xtpg->pattern->cur.val); /* * Switching between passthrough and test pattern generation modes isn't * allowed during streaming, update the control range accordingly. */ passthrough = xtpg->pattern->cur.val == 0; __xtpg_update_pattern_control(xtpg, passthrough, !passthrough); xtpg->streaming = true; mutex_unlock(xtpg->ctrl_handler.lock); /* * For TPG v5.0, the bayer phase needs to be off for the pass through * mode, otherwise the external input would be subsampled. */ bayer_phase = passthrough ? XTPG_BAYER_PHASE_OFF : xtpg_get_bayer_phase(xtpg->formats[0].code); xvip_write(&xtpg->xvip, XTPG_BAYER_PHASE, bayer_phase); if (xtpg->vtmux_gpio) gpiod_set_value_cansleep(xtpg->vtmux_gpio, !passthrough); xvip_start(&xtpg->xvip); return 0; } /* ----------------------------------------------------------------------------- * V4L2 Subdevice Pad Operations */ static struct v4l2_mbus_framefmt * __xtpg_get_pad_format(struct xtpg_device *xtpg, struct v4l2_subdev_pad_config *cfg, unsigned int pad, u32 which) { switch (which) { case V4L2_SUBDEV_FORMAT_TRY: return v4l2_subdev_get_try_format(&xtpg->xvip.subdev, cfg, pad); case V4L2_SUBDEV_FORMAT_ACTIVE: return &xtpg->formats[pad]; default: return NULL; } } static int xtpg_get_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct xtpg_device *xtpg = to_tpg(subdev); fmt->format = *__xtpg_get_pad_format(xtpg, cfg, fmt->pad, fmt->which); return 0; } static int xtpg_set_format(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_format *fmt) { struct xtpg_device *xtpg = to_tpg(subdev); struct v4l2_mbus_framefmt *__format; u32 bayer_phase; __format = __xtpg_get_pad_format(xtpg, cfg, fmt->pad, fmt->which); /* In two pads mode the source pad format is always identical to the * sink pad format. */ if (xtpg->npads == 2 && fmt->pad == 1) { fmt->format = *__format; return 0; } /* Bayer phase is configurable at runtime */ if (xtpg->bayer) { bayer_phase = xtpg_get_bayer_phase(fmt->format.code); if (bayer_phase != XTPG_BAYER_PHASE_OFF) __format->code = fmt->format.code; } xvip_set_format_size(__format, fmt); fmt->format = *__format; /* Propagate the format to the source pad. */ if (xtpg->npads == 2) { __format = __xtpg_get_pad_format(xtpg, cfg, 1, fmt->which); *__format = fmt->format; } return 0; } /* ----------------------------------------------------------------------------- * V4L2 Subdevice Operations */ static int xtpg_enum_frame_size(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_frame_size_enum *fse) { struct v4l2_mbus_framefmt *format; format = v4l2_subdev_get_try_format(subdev, cfg, fse->pad); if (fse->index || fse->code != format->code) return -EINVAL; /* Min / max values for pad 0 is always fixed in both one and two pads * modes. In two pads mode, the source pad(= 1) size is identical to * the sink pad size */ if (fse->pad == 0) { fse->min_width = XVIP_MIN_WIDTH; fse->max_width = XVIP_MAX_WIDTH; fse->min_height = XVIP_MIN_HEIGHT; fse->max_height = XVIP_MAX_HEIGHT; } else { fse->min_width = format->width; fse->max_width = format->width; fse->min_height = format->height; fse->max_height = format->height; } return 0; } static int xtpg_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) { struct xtpg_device *xtpg = to_tpg(subdev); struct v4l2_mbus_framefmt *format; format = v4l2_subdev_get_try_format(subdev, fh->pad, 0); *format = xtpg->default_format; if (xtpg->npads == 2) { format = v4l2_subdev_get_try_format(subdev, fh->pad, 1); *format = xtpg->default_format; } return 0; } static int xtpg_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) { return 0; } static int xtpg_s_ctrl(struct v4l2_ctrl *ctrl) { struct xtpg_device *xtpg = container_of(ctrl->handler, struct xtpg_device, ctrl_handler); switch (ctrl->id) { case V4L2_CID_TEST_PATTERN: xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_MASK, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_CROSS_HAIRS: xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_CONTROL_CROSS_HAIRS, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_MOVING_BOX: xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_CONTROL_MOVING_BOX, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_COLOR_MASK: xvip_clr_and_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_CONTROL_COLOR_MASK_MASK, ctrl->val << XTPG_PATTERN_CONTROL_COLOR_MASK_SHIFT); return 0; case V4L2_CID_XILINX_TPG_STUCK_PIXEL: xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_CONTROL_STUCK_PIXEL, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_NOISE: xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_CONTROL_NOISE, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_MOTION: xvip_clr_or_set(&xtpg->xvip, XTPG_PATTERN_CONTROL, XTPG_PATTERN_CONTROL_MOTION, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_MOTION_SPEED: xvip_write(&xtpg->xvip, XTPG_MOTION_SPEED, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW: xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS, XTPG_CROSS_HAIRS_ROW_MASK, ctrl->val << XTPG_CROSS_HAIRS_ROW_SHIFT); return 0; case V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN: xvip_clr_and_set(&xtpg->xvip, XTPG_CROSS_HAIRS, XTPG_CROSS_HAIRS_COLUMN_MASK, ctrl->val << XTPG_CROSS_HAIRS_COLUMN_SHIFT); return 0; case V4L2_CID_XILINX_TPG_ZPLATE_HOR_START: xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL, XTPG_ZPLATE_START_MASK, ctrl->val << XTPG_ZPLATE_START_SHIFT); return 0; case V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED: xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_HOR_CONTROL, XTPG_ZPLATE_SPEED_MASK, ctrl->val << XTPG_ZPLATE_SPEED_SHIFT); return 0; case V4L2_CID_XILINX_TPG_ZPLATE_VER_START: xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL, XTPG_ZPLATE_START_MASK, ctrl->val << XTPG_ZPLATE_START_SHIFT); return 0; case V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED: xvip_clr_and_set(&xtpg->xvip, XTPG_ZPLATE_VER_CONTROL, XTPG_ZPLATE_SPEED_MASK, ctrl->val << XTPG_ZPLATE_SPEED_SHIFT); return 0; case V4L2_CID_XILINX_TPG_BOX_SIZE: xvip_write(&xtpg->xvip, XTPG_BOX_SIZE, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_BOX_COLOR: xvip_write(&xtpg->xvip, XTPG_BOX_COLOR, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH: xvip_write(&xtpg->xvip, XTPG_STUCK_PIXEL_THRESH, ctrl->val); return 0; case V4L2_CID_XILINX_TPG_NOISE_GAIN: xvip_write(&xtpg->xvip, XTPG_NOISE_GAIN, ctrl->val); return 0; } return 0; } static const struct v4l2_ctrl_ops xtpg_ctrl_ops = { .s_ctrl = xtpg_s_ctrl, }; static struct v4l2_subdev_core_ops xtpg_core_ops = { }; static struct v4l2_subdev_video_ops xtpg_video_ops = { .s_stream = xtpg_s_stream, }; static struct v4l2_subdev_pad_ops xtpg_pad_ops = { .enum_mbus_code = xvip_enum_mbus_code, .enum_frame_size = xtpg_enum_frame_size, .get_fmt = xtpg_get_format, .set_fmt = xtpg_set_format, }; static struct v4l2_subdev_ops xtpg_ops = { .core = &xtpg_core_ops, .video = &xtpg_video_ops, .pad = &xtpg_pad_ops, }; static const struct v4l2_subdev_internal_ops xtpg_internal_ops = { .open = xtpg_open, .close = xtpg_close, }; /* * Control Config */ static const char *const xtpg_pattern_strings[] = { "Passthrough", "Horizontal Ramp", "Vertical Ramp", "Temporal Ramp", "Solid Red", "Solid Green", "Solid Blue", "Solid Black", "Solid White", "Color Bars", "Zone Plate", "Tartan Color Bars", "Cross Hatch", "None", "Vertical/Horizontal Ramps", "Black/White Checker Board", }; static struct v4l2_ctrl_config xtpg_ctrls[] = { { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_CROSS_HAIRS, .name = "Test Pattern: Cross Hairs", .type = V4L2_CTRL_TYPE_BOOLEAN, .min = false, .max = true, .step = 1, .def = 0, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_MOVING_BOX, .name = "Test Pattern: Moving Box", .type = V4L2_CTRL_TYPE_BOOLEAN, .min = false, .max = true, .step = 1, .def = 0, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_COLOR_MASK, .name = "Test Pattern: Color Mask", .type = V4L2_CTRL_TYPE_BITMASK, .min = 0, .max = 0xf, .def = 0, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_STUCK_PIXEL, .name = "Test Pattern: Stuck Pixel", .type = V4L2_CTRL_TYPE_BOOLEAN, .min = false, .max = true, .step = 1, .def = 0, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_NOISE, .name = "Test Pattern: Noise", .type = V4L2_CTRL_TYPE_BOOLEAN, .min = false, .max = true, .step = 1, .def = 0, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_MOTION, .name = "Test Pattern: Motion", .type = V4L2_CTRL_TYPE_BOOLEAN, .min = false, .max = true, .step = 1, .def = 0, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_MOTION_SPEED, .name = "Test Pattern: Motion Speed", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 8) - 1, .step = 1, .def = 4, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_CROSS_HAIR_ROW, .name = "Test Pattern: Cross Hairs Row", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 12) - 1, .step = 1, .def = 0x64, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_CROSS_HAIR_COLUMN, .name = "Test Pattern: Cross Hairs Column", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 12) - 1, .step = 1, .def = 0x64, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_ZPLATE_HOR_START, .name = "Test Pattern: Zplate Horizontal Start Pos", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 16) - 1, .step = 1, .def = 0x1e, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_ZPLATE_HOR_SPEED, .name = "Test Pattern: Zplate Horizontal Speed", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 16) - 1, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_ZPLATE_VER_START, .name = "Test Pattern: Zplate Vertical Start Pos", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 16) - 1, .step = 1, .def = 1, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_ZPLATE_VER_SPEED, .name = "Test Pattern: Zplate Vertical Speed", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 16) - 1, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_BOX_SIZE, .name = "Test Pattern: Box Size", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 12) - 1, .step = 1, .def = 0x32, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_BOX_COLOR, .name = "Test Pattern: Box Color(RGB)", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 24) - 1, .step = 1, .def = 0, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_STUCK_PIXEL_THRESH, .name = "Test Pattern: Stuck Pixel threshold", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 16) - 1, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_SLIDER, }, { .ops = &xtpg_ctrl_ops, .id = V4L2_CID_XILINX_TPG_NOISE_GAIN, .name = "Test Pattern: Noise Gain", .type = V4L2_CTRL_TYPE_INTEGER, .min = 0, .max = (1 << 8) - 1, .step = 1, .def = 0, .flags = V4L2_CTRL_FLAG_SLIDER, }, }; /* ----------------------------------------------------------------------------- * Media Operations */ static const struct media_entity_operations xtpg_media_ops = { .link_validate = v4l2_subdev_link_validate, }; /* ----------------------------------------------------------------------------- * Power Management */ static int __maybe_unused xtpg_pm_suspend(struct device *dev) { struct xtpg_device *xtpg = dev_get_drvdata(dev); xvip_suspend(&xtpg->xvip); return 0; } static int __maybe_unused xtpg_pm_resume(struct device *dev) { struct xtpg_device *xtpg = dev_get_drvdata(dev); xvip_resume(&xtpg->xvip); return 0; } /* ----------------------------------------------------------------------------- * Platform Device Driver */ static int xtpg_parse_of(struct xtpg_device *xtpg) { struct device *dev = xtpg->xvip.dev; struct device_node *node = xtpg->xvip.dev->of_node; struct device_node *ports; struct device_node *port; unsigned int nports = 0; bool has_endpoint = false; ports = of_get_child_by_name(node, "ports"); if (ports == NULL) ports = node; for_each_child_of_node(ports, port) { const struct xvip_video_format *format; struct device_node *endpoint; if (!port->name || of_node_cmp(port->name, "port")) continue; format = xvip_of_get_format(port); if (IS_ERR(format)) { dev_err(dev, "invalid format in DT"); return PTR_ERR(format); } /* Get and check the format description */ if (!xtpg->vip_format) { xtpg->vip_format = format; } else if (xtpg->vip_format != format) { dev_err(dev, "in/out format mismatch in DT"); return -EINVAL; } if (nports == 0) { endpoint = of_get_next_child(port, NULL); if (endpoint) has_endpoint = true; of_node_put(endpoint); } /* Count the number of ports. */ nports++; } if (nports != 1 && nports != 2) { dev_err(dev, "invalid number of ports %u\n", nports); return -EINVAL; } xtpg->npads = nports; if (nports == 2 && has_endpoint) xtpg->has_input = true; return 0; } static int xtpg_probe(struct platform_device *pdev) { struct v4l2_subdev *subdev; struct xtpg_device *xtpg; u32 i, bayer_phase; int ret; xtpg = devm_kzalloc(&pdev->dev, sizeof(*xtpg), GFP_KERNEL); if (!xtpg) return -ENOMEM; xtpg->xvip.dev = &pdev->dev; ret = xtpg_parse_of(xtpg); if (ret < 0) return ret; ret = xvip_init_resources(&xtpg->xvip); if (ret < 0) return ret; xtpg->vtmux_gpio = devm_gpiod_get_optional(&pdev->dev, "timing", GPIOD_OUT_HIGH); if (IS_ERR(xtpg->vtmux_gpio)) { ret = PTR_ERR(xtpg->vtmux_gpio); goto error_resource; } xtpg->vtc = xvtc_of_get(pdev->dev.of_node); if (IS_ERR(xtpg->vtc)) { ret = PTR_ERR(xtpg->vtc); goto error_resource; } /* Reset and initialize the core */ xvip_reset(&xtpg->xvip); /* Initialize V4L2 subdevice and media entity. Pad numbers depend on the * number of pads. */ if (xtpg->npads == 2) { xtpg->pads[0].flags = MEDIA_PAD_FL_SINK; xtpg->pads[1].flags = MEDIA_PAD_FL_SOURCE; } else { xtpg->pads[0].flags = MEDIA_PAD_FL_SOURCE; } /* Initialize the default format */ xtpg->default_format.code = xtpg->vip_format->code; xtpg->default_format.field = V4L2_FIELD_NONE; xtpg->default_format.colorspace = V4L2_COLORSPACE_SRGB; xvip_get_frame_size(&xtpg->xvip, &xtpg->default_format); bayer_phase = xtpg_get_bayer_phase(xtpg->vip_format->code); if (bayer_phase != XTPG_BAYER_PHASE_OFF) xtpg->bayer = true; xtpg->formats[0] = xtpg->default_format; if (xtpg->npads == 2) xtpg->formats[1] = xtpg->default_format; /* Initialize V4L2 subdevice and media entity */ subdev = &xtpg->xvip.subdev; v4l2_subdev_init(subdev, &xtpg_ops); subdev->dev = &pdev->dev; subdev->internal_ops = &xtpg_internal_ops; strlcpy(subdev->name, dev_name(&pdev->dev), sizeof(subdev->name)); v4l2_set_subdevdata(subdev, xtpg); subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; subdev->entity.ops = &xtpg_media_ops; ret = media_entity_init(&subdev->entity, xtpg->npads, xtpg->pads, 0); if (ret < 0) goto error; v4l2_ctrl_handler_init(&xtpg->ctrl_handler, 3 + ARRAY_SIZE(xtpg_ctrls)); xtpg->vblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops, V4L2_CID_VBLANK, XTPG_MIN_VBLANK, XTPG_MAX_VBLANK, 1, 100); xtpg->hblank = v4l2_ctrl_new_std(&xtpg->ctrl_handler, &xtpg_ctrl_ops, V4L2_CID_HBLANK, XTPG_MIN_HBLANK, XTPG_MAX_HBLANK, 1, 100); xtpg->pattern = v4l2_ctrl_new_std_menu_items(&xtpg->ctrl_handler, &xtpg_ctrl_ops, V4L2_CID_TEST_PATTERN, ARRAY_SIZE(xtpg_pattern_strings) - 1, 1, 9, xtpg_pattern_strings); for (i = 0; i < ARRAY_SIZE(xtpg_ctrls); i++) v4l2_ctrl_new_custom(&xtpg->ctrl_handler, &xtpg_ctrls[i], NULL); if (xtpg->ctrl_handler.error) { dev_err(&pdev->dev, "failed to add controls\n"); ret = xtpg->ctrl_handler.error; goto error; } subdev->ctrl_handler = &xtpg->ctrl_handler; xtpg_update_pattern_control(xtpg, true, true); ret = v4l2_ctrl_handler_setup(&xtpg->ctrl_handler); if (ret < 0) { dev_err(&pdev->dev, "failed to set controls\n"); goto error; } platform_set_drvdata(pdev, xtpg); xvip_print_version(&xtpg->xvip); ret = v4l2_async_register_subdev(subdev); if (ret < 0) { dev_err(&pdev->dev, "failed to register subdev\n"); goto error; } return 0; error: v4l2_ctrl_handler_free(&xtpg->ctrl_handler); media_entity_cleanup(&subdev->entity); xvtc_put(xtpg->vtc); error_resource: xvip_cleanup_resources(&xtpg->xvip); return ret; } static int xtpg_remove(struct platform_device *pdev) { struct xtpg_device *xtpg = platform_get_drvdata(pdev); struct v4l2_subdev *subdev = &xtpg->xvip.subdev; v4l2_async_unregister_subdev(subdev); v4l2_ctrl_handler_free(&xtpg->ctrl_handler); media_entity_cleanup(&subdev->entity); xvip_cleanup_resources(&xtpg->xvip); return 0; } static SIMPLE_DEV_PM_OPS(xtpg_pm_ops, xtpg_pm_suspend, xtpg_pm_resume); static const struct of_device_id xtpg_of_id_table[] = { { .compatible = "xlnx,v-tpg-5.0" }, { } }; MODULE_DEVICE_TABLE(of, xtpg_of_id_table); static struct platform_driver xtpg_driver = { .driver = { .name = "xilinx-tpg", .pm = &xtpg_pm_ops, .of_match_table = xtpg_of_id_table, }, .probe = xtpg_probe, .remove = xtpg_remove, }; module_platform_driver(xtpg_driver); MODULE_AUTHOR("Laurent Pinchart "); MODULE_DESCRIPTION("Xilinx Test Pattern Generator Driver"); MODULE_LICENSE("GPL v2");