Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Greg Kroah-Hartman | 2310 | 62.79% | 1 | 2.50% |
Hans Verkuil | 1041 | 28.30% | 14 | 35.00% |
Pete Eberlein | 154 | 4.19% | 4 | 10.00% |
Volokh Konstantin | 64 | 1.74% | 3 | 7.50% |
Junghak Sung | 28 | 0.76% | 2 | 5.00% |
Mauro Carvalho Chehab | 20 | 0.54% | 3 | 7.50% |
Sebastian Andrzej Siewior | 16 | 0.43% | 1 | 2.50% |
Zhipeng Lu | 8 | 0.22% | 1 | 2.50% |
Peter Hüwe | 7 | 0.19% | 1 | 2.50% |
Jean Delvare | 6 | 0.16% | 1 | 2.50% |
Dafna Hirschfeld | 6 | 0.16% | 1 | 2.50% |
Toshiaki Yamane | 5 | 0.14% | 1 | 2.50% |
Ben Hutchings | 4 | 0.11% | 1 | 2.50% |
Linus Torvalds (pre-git) | 2 | 0.05% | 1 | 2.50% |
Thomas Gleixner | 2 | 0.05% | 1 | 2.50% |
Gustavo A. R. Silva | 2 | 0.05% | 1 | 2.50% |
Laurent Pinchart | 2 | 0.05% | 1 | 2.50% |
Linus Torvalds | 1 | 0.03% | 1 | 2.50% |
Ross Cohen | 1 | 0.03% | 1 | 2.50% |
Total | 3679 | 40 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2005-2006 Micronas USA Inc. */ #include <linux/module.h> #include <linux/delay.h> #include <linux/sched.h> #include <linux/spinlock.h> #include <linux/unistd.h> #include <linux/time.h> #include <linux/mm.h> #include <linux/vmalloc.h> #include <linux/device.h> #include <linux/i2c.h> #include <linux/firmware.h> #include <linux/mutex.h> #include <linux/uaccess.h> #include <linux/slab.h> #include <linux/videodev2.h> #include <media/tuner.h> #include <media/v4l2-common.h> #include <media/v4l2-event.h> #include "go7007-priv.h" /* * Wait for an interrupt to be delivered from the GO7007SB and return * the associated value and data. * * Must be called with the hw_lock held. */ int go7007_read_interrupt(struct go7007 *go, u16 *value, u16 *data) { go->interrupt_available = 0; go->hpi_ops->read_interrupt(go); if (wait_event_timeout(go->interrupt_waitq, go->interrupt_available, 5*HZ) < 0) { v4l2_err(&go->v4l2_dev, "timeout waiting for read interrupt\n"); return -1; } if (!go->interrupt_available) return -1; go->interrupt_available = 0; *value = go->interrupt_value & 0xfffe; *data = go->interrupt_data; return 0; } EXPORT_SYMBOL(go7007_read_interrupt); /* * Read a register/address on the GO7007SB. * * Must be called with the hw_lock held. */ int go7007_read_addr(struct go7007 *go, u16 addr, u16 *data) { int count = 100; u16 value; if (go7007_write_interrupt(go, 0x0010, addr) < 0) return -EIO; while (count-- > 0) { if (go7007_read_interrupt(go, &value, data) == 0 && value == 0xa000) return 0; } return -EIO; } EXPORT_SYMBOL(go7007_read_addr); /* * Send the boot firmware to the encoder, which just wakes it up and lets * us talk to the GPIO pins and on-board I2C adapter. * * Must be called with the hw_lock held. */ static int go7007_load_encoder(struct go7007 *go) { const struct firmware *fw_entry; char fw_name[] = "go7007/go7007fw.bin"; void *bounce; int fw_len; u16 intr_val, intr_data; if (go->boot_fw == NULL) { if (request_firmware(&fw_entry, fw_name, go->dev)) { v4l2_err(go, "unable to load firmware from file \"%s\"\n", fw_name); return -1; } if (fw_entry->size < 16 || memcmp(fw_entry->data, "WISGO7007FW", 11)) { v4l2_err(go, "file \"%s\" does not appear to be go7007 firmware\n", fw_name); release_firmware(fw_entry); return -1; } fw_len = fw_entry->size - 16; bounce = kmemdup(fw_entry->data + 16, fw_len, GFP_KERNEL); if (bounce == NULL) { v4l2_err(go, "unable to allocate %d bytes for firmware transfer\n", fw_len); release_firmware(fw_entry); return -1; } release_firmware(fw_entry); go->boot_fw_len = fw_len; go->boot_fw = bounce; } if (go7007_interface_reset(go) < 0 || go7007_send_firmware(go, go->boot_fw, go->boot_fw_len) < 0 || go7007_read_interrupt(go, &intr_val, &intr_data) < 0 || (intr_val & ~0x1) != 0x5a5a) { v4l2_err(go, "error transferring firmware\n"); kfree(go->boot_fw); go->boot_fw = NULL; return -1; } return 0; } MODULE_FIRMWARE("go7007/go7007fw.bin"); /* * Boot the encoder and register the I2C adapter if requested. Do the * minimum initialization necessary, since the board-specific code may * still need to probe the board ID. * * Must NOT be called with the hw_lock held. */ int go7007_boot_encoder(struct go7007 *go, int init_i2c) { int ret; mutex_lock(&go->hw_lock); ret = go7007_load_encoder(go); mutex_unlock(&go->hw_lock); if (ret < 0) return -1; if (!init_i2c) return 0; if (go7007_i2c_init(go) < 0) return -1; go->i2c_adapter_online = 1; return 0; } EXPORT_SYMBOL(go7007_boot_encoder); /* * Configure any hardware-related registers in the GO7007, such as GPIO * pins and bus parameters, which are board-specific. This assumes * the boot firmware has already been downloaded. * * Must be called with the hw_lock held. */ static int go7007_init_encoder(struct go7007 *go) { if (go->board_info->audio_flags & GO7007_AUDIO_I2S_MASTER) { go7007_write_addr(go, 0x1000, 0x0811); go7007_write_addr(go, 0x1000, 0x0c11); } switch (go->board_id) { case GO7007_BOARDID_MATRIX_REV: /* Set GPIO pin 0 to be an output (audio clock control) */ go7007_write_addr(go, 0x3c82, 0x0001); go7007_write_addr(go, 0x3c80, 0x00fe); break; case GO7007_BOARDID_ADLINK_MPG24: /* set GPIO5 to be an output, currently low */ go7007_write_addr(go, 0x3c82, 0x0000); go7007_write_addr(go, 0x3c80, 0x00df); break; case GO7007_BOARDID_ADS_USBAV_709: /* GPIO pin 0: audio clock control */ /* pin 2: TW9906 reset */ /* pin 3: capture LED */ go7007_write_addr(go, 0x3c82, 0x000d); go7007_write_addr(go, 0x3c80, 0x00f2); break; } return 0; } /* * Send the boot firmware to the GO7007 and configure the registers. This * is the only way to stop the encoder once it has started streaming video. * * Must be called with the hw_lock held. */ int go7007_reset_encoder(struct go7007 *go) { if (go7007_load_encoder(go) < 0) return -1; return go7007_init_encoder(go); } /* * Attempt to instantiate an I2C client by ID, probably loading a module. */ static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *const i2c) { struct go7007 *go = i2c_get_adapdata(adapter); struct v4l2_device *v4l2_dev = &go->v4l2_dev; struct v4l2_subdev *sd; struct i2c_board_info info; memset(&info, 0, sizeof(info)); strscpy(info.type, i2c->type, sizeof(info.type)); info.addr = i2c->addr; info.flags = i2c->flags; sd = v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL); if (sd) { if (i2c->is_video) go->sd_video = sd; if (i2c->is_audio) go->sd_audio = sd; return 0; } pr_info("go7007: probing for module i2c:%s failed\n", i2c->type); return -EINVAL; } /* * Detach and unregister the encoder. The go7007 struct won't be freed * until v4l2 finishes releasing its resources and all associated fds are * closed by applications. */ static void go7007_remove(struct v4l2_device *v4l2_dev) { struct go7007 *go = container_of(v4l2_dev, struct go7007, v4l2_dev); v4l2_device_unregister(v4l2_dev); if (go->hpi_ops->release) go->hpi_ops->release(go); if (go->i2c_adapter_online) { i2c_del_adapter(&go->i2c_adapter); go->i2c_adapter_online = 0; } kfree(go->boot_fw); go7007_v4l2_remove(go); kfree(go); } /* * Finalize the GO7007 hardware setup, register the on-board I2C adapter * (if used on this board), load the I2C client driver for the sensor * (SAA7115 or whatever) and other devices, and register the ALSA and V4L2 * interfaces. * * Must NOT be called with the hw_lock held. */ int go7007_register_encoder(struct go7007 *go, unsigned num_i2c_devs) { int i, ret; dev_info(go->dev, "go7007: registering new %s\n", go->name); go->v4l2_dev.release = go7007_remove; ret = v4l2_device_register(go->dev, &go->v4l2_dev); if (ret < 0) return ret; mutex_lock(&go->hw_lock); ret = go7007_init_encoder(go); mutex_unlock(&go->hw_lock); if (ret < 0) return ret; ret = go7007_v4l2_ctrl_init(go); if (ret < 0) return ret; if (!go->i2c_adapter_online && go->board_info->flags & GO7007_BOARD_USE_ONBOARD_I2C) { ret = go7007_i2c_init(go); if (ret < 0) return ret; go->i2c_adapter_online = 1; } if (go->i2c_adapter_online) { if (go->board_id == GO7007_BOARDID_ADS_USBAV_709) { /* Reset the TW9906 */ go7007_write_addr(go, 0x3c82, 0x0009); msleep(50); go7007_write_addr(go, 0x3c82, 0x000d); } for (i = 0; i < num_i2c_devs; ++i) init_i2c_module(&go->i2c_adapter, &go->board_info->i2c_devs[i]); if (go->tuner_type >= 0) { struct tuner_setup setup = { .addr = ADDR_UNSET, .type = go->tuner_type, .mode_mask = T_ANALOG_TV, }; v4l2_device_call_all(&go->v4l2_dev, 0, tuner, s_type_addr, &setup); } if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) v4l2_subdev_call(go->sd_video, video, s_routing, 0, 0, go->channel_number + 1); } ret = go7007_v4l2_init(go); if (ret < 0) return ret; if (go->board_info->flags & GO7007_BOARD_HAS_AUDIO) { go->audio_enabled = 1; go7007_snd_init(go); } return 0; } EXPORT_SYMBOL(go7007_register_encoder); /* * Send the encode firmware to the encoder, which will cause it * to immediately start delivering the video and audio streams. * * Must be called with the hw_lock held. */ int go7007_start_encoder(struct go7007 *go) { u8 *fw; int fw_len, rv = 0, i, x, y; u16 intr_val, intr_data; go->modet_enable = 0; for (i = 0; i < 4; i++) go->modet[i].enable = 0; switch (v4l2_ctrl_g_ctrl(go->modet_mode)) { case V4L2_DETECT_MD_MODE_GLOBAL: memset(go->modet_map, 0, sizeof(go->modet_map)); go->modet[0].enable = 1; go->modet_enable = 1; break; case V4L2_DETECT_MD_MODE_REGION_GRID: for (y = 0; y < go->height / 16; y++) { for (x = 0; x < go->width / 16; x++) { int idx = y * go->width / 16 + x; go->modet[go->modet_map[idx]].enable = 1; } } go->modet_enable = 1; break; } if (go->dvd_mode) go->modet_enable = 0; if (go7007_construct_fw_image(go, &fw, &fw_len) < 0) return -1; if (go7007_send_firmware(go, fw, fw_len) < 0 || go7007_read_interrupt(go, &intr_val, &intr_data) < 0) { v4l2_err(&go->v4l2_dev, "error transferring firmware\n"); rv = -1; goto start_error; } go->state = STATE_DATA; go->parse_length = 0; go->seen_frame = 0; if (go7007_stream_start(go) < 0) { v4l2_err(&go->v4l2_dev, "error starting stream transfer\n"); rv = -1; goto start_error; } start_error: kfree(fw); return rv; } /* * Store a byte in the current video buffer, if there is one. */ static inline void store_byte(struct go7007_buffer *vb, u8 byte) { if (vb && vb->vb.vb2_buf.planes[0].bytesused < GO7007_BUF_SIZE) { u8 *ptr = vb2_plane_vaddr(&vb->vb.vb2_buf, 0); ptr[vb->vb.vb2_buf.planes[0].bytesused++] = byte; } } static void go7007_set_motion_regions(struct go7007 *go, struct go7007_buffer *vb, u32 motion_regions) { if (motion_regions != go->modet_event_status) { struct v4l2_event ev = { .type = V4L2_EVENT_MOTION_DET, .u.motion_det = { .flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ, .frame_sequence = vb->vb.sequence, .region_mask = motion_regions, }, }; v4l2_event_queue(&go->vdev, &ev); go->modet_event_status = motion_regions; } } /* * Determine regions with motion and send a motion detection event * in case of changes. */ static void go7007_motion_regions(struct go7007 *go, struct go7007_buffer *vb) { u32 *bytesused = &vb->vb.vb2_buf.planes[0].bytesused; unsigned motion[4] = { 0, 0, 0, 0 }; u32 motion_regions = 0; unsigned stride = (go->width + 7) >> 3; unsigned x, y; int i; for (i = 0; i < 216; ++i) store_byte(vb, go->active_map[i]); for (y = 0; y < go->height / 16; y++) { for (x = 0; x < go->width / 16; x++) { if (!(go->active_map[y * stride + (x >> 3)] & (1 << (x & 7)))) continue; motion[go->modet_map[y * (go->width / 16) + x]]++; } } motion_regions = ((motion[0] > 0) << 0) | ((motion[1] > 0) << 1) | ((motion[2] > 0) << 2) | ((motion[3] > 0) << 3); *bytesused -= 216; go7007_set_motion_regions(go, vb, motion_regions); } /* * Deliver the last video buffer and get a new one to start writing to. */ static struct go7007_buffer *frame_boundary(struct go7007 *go, struct go7007_buffer *vb) { u32 *bytesused; struct go7007_buffer *vb_tmp = NULL; unsigned long flags; if (vb == NULL) { spin_lock_irqsave(&go->spinlock, flags); if (!list_empty(&go->vidq_active)) vb = go->active_buf = list_first_entry(&go->vidq_active, struct go7007_buffer, list); spin_unlock_irqrestore(&go->spinlock, flags); go->next_seq++; return vb; } bytesused = &vb->vb.vb2_buf.planes[0].bytesused; vb->vb.sequence = go->next_seq++; if (vb->modet_active && *bytesused + 216 < GO7007_BUF_SIZE) go7007_motion_regions(go, vb); else go7007_set_motion_regions(go, vb, 0); vb->vb.vb2_buf.timestamp = ktime_get_ns(); vb_tmp = vb; spin_lock_irqsave(&go->spinlock, flags); list_del(&vb->list); if (list_empty(&go->vidq_active)) vb = NULL; else vb = list_first_entry(&go->vidq_active, struct go7007_buffer, list); go->active_buf = vb; spin_unlock_irqrestore(&go->spinlock, flags); vb2_buffer_done(&vb_tmp->vb.vb2_buf, VB2_BUF_STATE_DONE); return vb; } static void write_bitmap_word(struct go7007 *go) { int x, y, i, stride = ((go->width >> 4) + 7) >> 3; for (i = 0; i < 16; ++i) { y = (((go->parse_length - 1) << 3) + i) / (go->width >> 4); x = (((go->parse_length - 1) << 3) + i) % (go->width >> 4); if (stride * y + (x >> 3) < sizeof(go->active_map)) go->active_map[stride * y + (x >> 3)] |= (go->modet_word & 1) << (x & 0x7); go->modet_word >>= 1; } } /* * Parse a chunk of the video stream into frames. The frames are not * delimited by the hardware, so we have to parse the frame boundaries * based on the type of video stream we're receiving. */ void go7007_parse_video_stream(struct go7007 *go, u8 *buf, int length) { struct go7007_buffer *vb = go->active_buf; int i, seq_start_code = -1, gop_start_code = -1, frame_start_code = -1; switch (go->format) { case V4L2_PIX_FMT_MPEG4: seq_start_code = 0xB0; gop_start_code = 0xB3; frame_start_code = 0xB6; break; case V4L2_PIX_FMT_MPEG1: case V4L2_PIX_FMT_MPEG2: seq_start_code = 0xB3; gop_start_code = 0xB8; frame_start_code = 0x00; break; } for (i = 0; i < length; ++i) { if (vb && vb->vb.vb2_buf.planes[0].bytesused >= GO7007_BUF_SIZE - 3) { v4l2_info(&go->v4l2_dev, "dropping oversized frame\n"); vb2_set_plane_payload(&vb->vb.vb2_buf, 0, 0); vb->frame_offset = 0; vb->modet_active = 0; vb = go->active_buf = NULL; } switch (go->state) { case STATE_DATA: switch (buf[i]) { case 0x00: go->state = STATE_00; break; case 0xFF: go->state = STATE_FF; break; default: store_byte(vb, buf[i]); break; } break; case STATE_00: switch (buf[i]) { case 0x00: go->state = STATE_00_00; break; case 0xFF: store_byte(vb, 0x00); go->state = STATE_FF; break; default: store_byte(vb, 0x00); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_00_00: switch (buf[i]) { case 0x00: store_byte(vb, 0x00); /* go->state remains STATE_00_00 */ break; case 0x01: go->state = STATE_00_00_01; break; case 0xFF: store_byte(vb, 0x00); store_byte(vb, 0x00); go->state = STATE_FF; break; default: store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_00_00_01: if (buf[i] == 0xF8 && go->modet_enable == 0) { /* MODET start code, but MODET not enabled */ store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, 0x01); store_byte(vb, 0xF8); go->state = STATE_DATA; break; } /* If this is the start of a new MPEG frame, * get a new buffer */ if ((go->format == V4L2_PIX_FMT_MPEG1 || go->format == V4L2_PIX_FMT_MPEG2 || go->format == V4L2_PIX_FMT_MPEG4) && (buf[i] == seq_start_code || buf[i] == gop_start_code || buf[i] == frame_start_code)) { if (vb == NULL || go->seen_frame) vb = frame_boundary(go, vb); go->seen_frame = buf[i] == frame_start_code; if (vb && go->seen_frame) vb->frame_offset = vb->vb.vb2_buf.planes[0].bytesused; } /* Handle any special chunk types, or just write the * start code to the (potentially new) buffer */ switch (buf[i]) { case 0xF5: /* timestamp */ go->parse_length = 12; go->state = STATE_UNPARSED; break; case 0xF6: /* vbi */ go->state = STATE_VBI_LEN_A; break; case 0xF8: /* MD map */ go->parse_length = 0; memset(go->active_map, 0, sizeof(go->active_map)); go->state = STATE_MODET_MAP; break; case 0xFF: /* Potential JPEG start code */ store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, 0x01); go->state = STATE_FF; break; default: store_byte(vb, 0x00); store_byte(vb, 0x00); store_byte(vb, 0x01); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_FF: switch (buf[i]) { case 0x00: store_byte(vb, 0xFF); go->state = STATE_00; break; case 0xFF: store_byte(vb, 0xFF); /* go->state remains STATE_FF */ break; case 0xD8: if (go->format == V4L2_PIX_FMT_MJPEG) vb = frame_boundary(go, vb); fallthrough; default: store_byte(vb, 0xFF); store_byte(vb, buf[i]); go->state = STATE_DATA; break; } break; case STATE_VBI_LEN_A: go->parse_length = buf[i] << 8; go->state = STATE_VBI_LEN_B; break; case STATE_VBI_LEN_B: go->parse_length |= buf[i]; if (go->parse_length > 0) go->state = STATE_UNPARSED; else go->state = STATE_DATA; break; case STATE_MODET_MAP: if (go->parse_length < 204) { if (go->parse_length & 1) { go->modet_word |= buf[i]; write_bitmap_word(go); } else go->modet_word = buf[i] << 8; } else if (go->parse_length == 207 && vb) { vb->modet_active = buf[i]; } if (++go->parse_length == 208) go->state = STATE_DATA; break; case STATE_UNPARSED: if (--go->parse_length == 0) go->state = STATE_DATA; break; } } } EXPORT_SYMBOL(go7007_parse_video_stream); /* * Allocate a new go7007 struct. Used by the hardware-specific probe. */ struct go7007 *go7007_alloc(const struct go7007_board_info *board, struct device *dev) { struct go7007 *go; go = kzalloc(sizeof(struct go7007), GFP_KERNEL); if (go == NULL) return NULL; go->dev = dev; go->board_info = board; go->tuner_type = -1; mutex_init(&go->hw_lock); init_waitqueue_head(&go->frame_waitq); spin_lock_init(&go->spinlock); go->status = STATUS_INIT; init_waitqueue_head(&go->interrupt_waitq); go7007_update_board(go); go->format = V4L2_PIX_FMT_MJPEG; go->bitrate = 1500000; go->fps_scale = 1; go->aspect_ratio = GO7007_RATIO_1_1; return go; } EXPORT_SYMBOL(go7007_alloc); void go7007_update_board(struct go7007 *go) { const struct go7007_board_info *board = go->board_info; if (board->sensor_flags & GO7007_SENSOR_TV) { go->standard = GO7007_STD_NTSC; go->std = V4L2_STD_NTSC_M; go->width = 720; go->height = 480; go->sensor_framerate = 30000; } else { go->standard = GO7007_STD_OTHER; go->width = board->sensor_width; go->height = board->sensor_height; go->sensor_framerate = board->sensor_framerate; } go->encoder_v_offset = board->sensor_v_offset; go->encoder_h_offset = board->sensor_h_offset; } EXPORT_SYMBOL(go7007_update_board); MODULE_LICENSE("GPL v2");
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