| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mauro Carvalho Chehab | 7680 | 54.28% | 85 | 36.64% |
| Frank Schäfer | 2704 | 19.11% | 65 | 28.02% |
| Devin Heitmueller | 2055 | 14.52% | 10 | 4.31% |
| Hans Verkuil | 823 | 5.82% | 34 | 14.66% |
| Aidan Thornton | 270 | 1.91% | 4 | 1.72% |
| Andrew Morton | 237 | 1.67% | 1 | 0.43% |
| Shuah Khan | 88 | 0.62% | 1 | 0.43% |
| Douglas Schilling Landgraf | 56 | 0.40% | 3 | 1.29% |
| Trent Piepho | 54 | 0.38% | 3 | 1.29% |
| Junghak Sung | 53 | 0.37% | 2 | 0.86% |
| Sascha Sommer | 43 | 0.30% | 3 | 1.29% |
| Robert Krakora | 25 | 0.18% | 1 | 0.43% |
| Laurent Pinchart | 18 | 0.13% | 3 | 1.29% |
| Alban Browaeys | 10 | 0.07% | 1 | 0.43% |
| Arnd Bergmann | 5 | 0.04% | 1 | 0.43% |
| Nicola Soranzo | 4 | 0.03% | 1 | 0.43% |
| Ingo Molnar | 3 | 0.02% | 1 | 0.43% |
| Tejun Heo | 3 | 0.02% | 1 | 0.43% |
| Russell King | 3 | 0.02% | 2 | 0.86% |
| Ezequiel García | 2 | 0.01% | 1 | 0.43% |
| Colin Ian King | 2 | 0.01% | 1 | 0.43% |
| Gianluca Gennari | 2 | 0.01% | 1 | 0.43% |
| Sakari Ailus | 2 | 0.01% | 1 | 0.43% |
| Vitaly Wool | 2 | 0.01% | 1 | 0.43% |
| Eric Sesterhenn / Snakebyte | 2 | 0.01% | 1 | 0.43% |
| Lucas De Marchi | 1 | 0.01% | 1 | 0.43% |
| Fengguang Wu | 1 | 0.01% | 1 | 0.43% |
| Julia Lawall | 1 | 0.01% | 1 | 0.43% |
| Kay Sievers | 1 | 0.01% | 1 | 0.43% |
| Total | 14150 | 232 |
// SPDX-License-Identifier: GPL-2.0+ // // em28xx-video.c - driver for Empia EM2800/EM2820/2840 USB // video capture devices // // Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> // Markus Rechberger <mrechberger@gmail.com> // Mauro Carvalho Chehab <mchehab@kernel.org> // Sascha Sommer <saschasommer@freenet.de> // Copyright (C) 2012 Frank Schäfer <fschaefer.oss@googlemail.com> // // Some parts based on SN9C10x PC Camera Controllers GPL driver made // by Luca Risolia <luca.risolia@studio.unibo.it> // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation; either version 2 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. #include "em28xx.h" #include <linux/init.h> #include <linux/list.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/bitmap.h> #include <linux/usb.h> #include <linux/i2c.h> #include <linux/mm.h> #include <linux/mutex.h> #include <linux/slab.h> #include "em28xx-v4l.h" #include <media/v4l2-common.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-event.h> #include <media/drv-intf/msp3400.h> #include <media/tuner.h> #define DRIVER_AUTHOR "Ludovico Cavedon <cavedon@sssup.it>, " \ "Markus Rechberger <mrechberger@gmail.com>, " \ "Mauro Carvalho Chehab <mchehab@kernel.org>, " \ "Sascha Sommer <saschasommer@freenet.de>" static unsigned int isoc_debug; module_param(isoc_debug, int, 0644); MODULE_PARM_DESC(isoc_debug, "enable debug messages [isoc transfers]"); static unsigned int disable_vbi; module_param(disable_vbi, int, 0644); MODULE_PARM_DESC(disable_vbi, "disable vbi support"); static int alt; module_param(alt, int, 0644); MODULE_PARM_DESC(alt, "alternate setting to use for video endpoint"); #define em28xx_videodbg(fmt, arg...) do { \ if (video_debug) \ dev_printk(KERN_DEBUG, &dev->intf->dev, \ "video: %s: " fmt, __func__, ## arg); \ } while (0) #define em28xx_isocdbg(fmt, arg...) do {\ if (isoc_debug) \ dev_printk(KERN_DEBUG, &dev->intf->dev, \ "isoc: %s: " fmt, __func__, ## arg); \ } while (0) MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC " - v4l2 interface"); MODULE_LICENSE("GPL v2"); MODULE_VERSION(EM28XX_VERSION); #define EM25XX_FRMDATAHDR_BYTE1 0x02 #define EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE 0x20 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_END 0x02 #define EM25XX_FRMDATAHDR_BYTE2_FRAME_ID 0x01 #define EM25XX_FRMDATAHDR_BYTE2_MASK (EM25XX_FRMDATAHDR_BYTE2_STILL_IMAGE | \ EM25XX_FRMDATAHDR_BYTE2_FRAME_END | \ EM25XX_FRMDATAHDR_BYTE2_FRAME_ID) static unsigned int video_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; static unsigned int vbi_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; static unsigned int radio_nr[] = {[0 ... (EM28XX_MAXBOARDS - 1)] = -1U }; module_param_array(video_nr, int, NULL, 0444); module_param_array(vbi_nr, int, NULL, 0444); module_param_array(radio_nr, int, NULL, 0444); MODULE_PARM_DESC(video_nr, "video device numbers"); MODULE_PARM_DESC(vbi_nr, "vbi device numbers"); MODULE_PARM_DESC(radio_nr, "radio device numbers"); static unsigned int video_debug; module_param(video_debug, int, 0644); MODULE_PARM_DESC(video_debug, "enable debug messages [video]"); /* supported video standards */ static struct em28xx_fmt format[] = { { .name = "16 bpp YUY2, 4:2:2, packed", .fourcc = V4L2_PIX_FMT_YUYV, .depth = 16, .reg = EM28XX_OUTFMT_YUV422_Y0UY1V, }, { .name = "16 bpp RGB 565, LE", .fourcc = V4L2_PIX_FMT_RGB565, .depth = 16, .reg = EM28XX_OUTFMT_RGB_16_656, }, { .name = "8 bpp Bayer RGRG..GBGB", .fourcc = V4L2_PIX_FMT_SRGGB8, .depth = 8, .reg = EM28XX_OUTFMT_RGB_8_RGRG, }, { .name = "8 bpp Bayer BGBG..GRGR", .fourcc = V4L2_PIX_FMT_SBGGR8, .depth = 8, .reg = EM28XX_OUTFMT_RGB_8_BGBG, }, { .name = "8 bpp Bayer GRGR..BGBG", .fourcc = V4L2_PIX_FMT_SGRBG8, .depth = 8, .reg = EM28XX_OUTFMT_RGB_8_GRGR, }, { .name = "8 bpp Bayer GBGB..RGRG", .fourcc = V4L2_PIX_FMT_SGBRG8, .depth = 8, .reg = EM28XX_OUTFMT_RGB_8_GBGB, }, { .name = "12 bpp YUV411", .fourcc = V4L2_PIX_FMT_YUV411P, .depth = 12, .reg = EM28XX_OUTFMT_YUV411, }, }; /*FIXME: maxw should be dependent of alt mode */ static inline unsigned int norm_maxw(struct em28xx *dev) { struct em28xx_v4l2 *v4l2 = dev->v4l2; if (dev->is_webcam) return v4l2->sensor_xres; if (dev->board.max_range_640_480) return 640; return 720; } static inline unsigned int norm_maxh(struct em28xx *dev) { struct em28xx_v4l2 *v4l2 = dev->v4l2; if (dev->is_webcam) return v4l2->sensor_yres; if (dev->board.max_range_640_480) return 480; return (v4l2->norm & V4L2_STD_625_50) ? 576 : 480; } static int em28xx_vbi_supported(struct em28xx *dev) { /* Modprobe option to manually disable */ if (disable_vbi == 1) return 0; if (dev->is_webcam) return 0; /* FIXME: check subdevices for VBI support */ if (dev->chip_id == CHIP_ID_EM2860 || dev->chip_id == CHIP_ID_EM2883) return 1; /* Version of em28xx that does not support VBI */ return 0; } /* * em28xx_wake_i2c() * configure i2c attached devices */ static void em28xx_wake_i2c(struct em28xx *dev) { struct v4l2_device *v4l2_dev = &dev->v4l2->v4l2_dev; v4l2_device_call_all(v4l2_dev, 0, core, reset, 0); v4l2_device_call_all(v4l2_dev, 0, video, s_routing, INPUT(dev->ctl_input)->vmux, 0, 0); } static int em28xx_colorlevels_set_default(struct em28xx *dev) { em28xx_write_reg(dev, EM28XX_R20_YGAIN, CONTRAST_DEFAULT); em28xx_write_reg(dev, EM28XX_R21_YOFFSET, BRIGHTNESS_DEFAULT); em28xx_write_reg(dev, EM28XX_R22_UVGAIN, SATURATION_DEFAULT); em28xx_write_reg(dev, EM28XX_R23_UOFFSET, BLUE_BALANCE_DEFAULT); em28xx_write_reg(dev, EM28XX_R24_VOFFSET, RED_BALANCE_DEFAULT); em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, SHARPNESS_DEFAULT); em28xx_write_reg(dev, EM28XX_R14_GAMMA, 0x20); em28xx_write_reg(dev, EM28XX_R15_RGAIN, 0x20); em28xx_write_reg(dev, EM28XX_R16_GGAIN, 0x20); em28xx_write_reg(dev, EM28XX_R17_BGAIN, 0x20); em28xx_write_reg(dev, EM28XX_R18_ROFFSET, 0x00); em28xx_write_reg(dev, EM28XX_R19_GOFFSET, 0x00); return em28xx_write_reg(dev, EM28XX_R1A_BOFFSET, 0x00); } static int em28xx_set_outfmt(struct em28xx *dev) { int ret; u8 fmt, vinctrl; struct em28xx_v4l2 *v4l2 = dev->v4l2; fmt = v4l2->format->reg; if (!dev->is_em25xx) fmt |= 0x20; /* * NOTE: it's not clear if this is really needed ! * The datasheets say bit 5 is a reserved bit and devices seem to work * fine without it. But the Windows driver sets it for em2710/50+em28xx * devices and we've always been setting it, too. * * em2765 (em25xx, em276x/7x/8x) devices do NOT work with this bit set, * it's likely used for an additional (compressed ?) format there. */ ret = em28xx_write_reg(dev, EM28XX_R27_OUTFMT, fmt); if (ret < 0) return ret; ret = em28xx_write_reg(dev, EM28XX_R10_VINMODE, v4l2->vinmode); if (ret < 0) return ret; vinctrl = v4l2->vinctl; if (em28xx_vbi_supported(dev) == 1) { vinctrl |= EM28XX_VINCTRL_VBI_RAW; em28xx_write_reg(dev, EM28XX_R34_VBI_START_H, 0x00); em28xx_write_reg(dev, EM28XX_R36_VBI_WIDTH, v4l2->vbi_width / 4); em28xx_write_reg(dev, EM28XX_R37_VBI_HEIGHT, v4l2->vbi_height); if (v4l2->norm & V4L2_STD_525_60) { /* NTSC */ em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x09); } else if (v4l2->norm & V4L2_STD_625_50) { /* PAL */ em28xx_write_reg(dev, EM28XX_R35_VBI_START_V, 0x07); } } return em28xx_write_reg(dev, EM28XX_R11_VINCTRL, vinctrl); } static int em28xx_accumulator_set(struct em28xx *dev, u8 xmin, u8 xmax, u8 ymin, u8 ymax) { em28xx_videodbg("em28xx Scale: (%d,%d)-(%d,%d)\n", xmin, ymin, xmax, ymax); em28xx_write_regs(dev, EM28XX_R28_XMIN, &xmin, 1); em28xx_write_regs(dev, EM28XX_R29_XMAX, &xmax, 1); em28xx_write_regs(dev, EM28XX_R2A_YMIN, &ymin, 1); return em28xx_write_regs(dev, EM28XX_R2B_YMAX, &ymax, 1); } static void em28xx_capture_area_set(struct em28xx *dev, u8 hstart, u8 vstart, u16 width, u16 height) { u8 cwidth = width >> 2; u8 cheight = height >> 2; u8 overflow = (height >> 9 & 0x02) | (width >> 10 & 0x01); /* NOTE: size limit: 2047x1023 = 2MPix */ em28xx_videodbg("capture area set to (%d,%d): %dx%d\n", hstart, vstart, ((overflow & 2) << 9 | cwidth << 2), ((overflow & 1) << 10 | cheight << 2)); em28xx_write_regs(dev, EM28XX_R1C_HSTART, &hstart, 1); em28xx_write_regs(dev, EM28XX_R1D_VSTART, &vstart, 1); em28xx_write_regs(dev, EM28XX_R1E_CWIDTH, &cwidth, 1); em28xx_write_regs(dev, EM28XX_R1F_CHEIGHT, &cheight, 1); em28xx_write_regs(dev, EM28XX_R1B_OFLOW, &overflow, 1); /* FIXME: function/meaning of these registers ? */ /* FIXME: align width+height to multiples of 4 ?! */ if (dev->is_em25xx) { em28xx_write_reg(dev, 0x34, width >> 4); em28xx_write_reg(dev, 0x35, height >> 4); } } static int em28xx_scaler_set(struct em28xx *dev, u16 h, u16 v) { u8 mode = 0x00; /* the em2800 scaler only supports scaling down to 50% */ if (dev->board.is_em2800) { mode = (v ? 0x20 : 0x00) | (h ? 0x10 : 0x00); } else { u8 buf[2]; buf[0] = h; buf[1] = h >> 8; em28xx_write_regs(dev, EM28XX_R30_HSCALELOW, (char *)buf, 2); buf[0] = v; buf[1] = v >> 8; em28xx_write_regs(dev, EM28XX_R32_VSCALELOW, (char *)buf, 2); /* * it seems that both H and V scalers must be active * to work correctly */ mode = (h || v) ? 0x30 : 0x00; } return em28xx_write_reg(dev, EM28XX_R26_COMPR, mode); } /* FIXME: this only function read values from dev */ static int em28xx_resolution_set(struct em28xx *dev) { struct em28xx_v4l2 *v4l2 = dev->v4l2; int width = norm_maxw(dev); int height = norm_maxh(dev); /* Properly setup VBI */ v4l2->vbi_width = 720; if (v4l2->norm & V4L2_STD_525_60) v4l2->vbi_height = 12; else v4l2->vbi_height = 18; em28xx_set_outfmt(dev); em28xx_accumulator_set(dev, 1, (width - 4) >> 2, 1, (height - 4) >> 2); /* * If we don't set the start position to 2 in VBI mode, we end up * with line 20/21 being YUYV encoded instead of being in 8-bit * greyscale. The core of the issue is that line 21 (and line 23 for * PAL WSS) are inside of active video region, and as a result they * get the pixelformatting associated with that area. So by cropping * it out, we end up with the same format as the rest of the VBI * region */ if (em28xx_vbi_supported(dev) == 1) em28xx_capture_area_set(dev, 0, 2, width, height); else em28xx_capture_area_set(dev, 0, 0, width, height); return em28xx_scaler_set(dev, v4l2->hscale, v4l2->vscale); } /* Set USB alternate setting for analog video */ static int em28xx_set_alternate(struct em28xx *dev) { struct em28xx_v4l2 *v4l2 = dev->v4l2; struct usb_device *udev = interface_to_usbdev(dev->intf); int err; int i; unsigned int min_pkt_size = v4l2->width * 2 + 4; /* * NOTE: for isoc transfers, only alt settings > 0 are allowed * bulk transfers seem to work only with alt=0 ! */ dev->alt = 0; if (alt > 0 && alt < dev->num_alt) { em28xx_videodbg("alternate forced to %d\n", dev->alt); dev->alt = alt; goto set_alt; } if (dev->analog_xfer_bulk) goto set_alt; /* * When image size is bigger than a certain value, * the frame size should be increased, otherwise, only * green screen will be received. */ if (v4l2->width * 2 * v4l2->height > 720 * 240 * 2) min_pkt_size *= 2; for (i = 0; i < dev->num_alt; i++) { /* stop when the selected alt setting offers enough bandwidth */ if (dev->alt_max_pkt_size_isoc[i] >= min_pkt_size) { dev->alt = i; break; /* * otherwise make sure that we end up with the maximum * bandwidth because the min_pkt_size equation might be wrong. * */ } else if (dev->alt_max_pkt_size_isoc[i] > dev->alt_max_pkt_size_isoc[dev->alt]) dev->alt = i; } set_alt: /* * NOTE: for bulk transfers, we need to call usb_set_interface() * even if the previous settings were the same. Otherwise streaming * fails with all urbs having status = -EOVERFLOW ! */ if (dev->analog_xfer_bulk) { dev->max_pkt_size = 512; /* USB 2.0 spec */ dev->packet_multiplier = EM28XX_BULK_PACKET_MULTIPLIER; } else { /* isoc */ em28xx_videodbg("minimum isoc packet size: %u (alt=%d)\n", min_pkt_size, dev->alt); dev->max_pkt_size = dev->alt_max_pkt_size_isoc[dev->alt]; dev->packet_multiplier = EM28XX_NUM_ISOC_PACKETS; } em28xx_videodbg("setting alternate %d with wMaxPacketSize=%u\n", dev->alt, dev->max_pkt_size); err = usb_set_interface(udev, dev->ifnum, dev->alt); if (err < 0) { dev_err(&dev->intf->dev, "cannot change alternate number to %d (error=%i)\n", dev->alt, err); return err; } return 0; } /* * DMA and thread functions */ /* * Finish the current buffer */ static inline void finish_buffer(struct em28xx *dev, struct em28xx_buffer *buf) { em28xx_isocdbg("[%p/%d] wakeup\n", buf, buf->top_field); buf->vb.sequence = dev->v4l2->field_count++; if (dev->v4l2->progressive) buf->vb.field = V4L2_FIELD_NONE; else buf->vb.field = V4L2_FIELD_INTERLACED; buf->vb.vb2_buf.timestamp = ktime_get_ns(); vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_DONE); } /* * Copy picture data from USB buffer to videobuf buffer */ static void em28xx_copy_video(struct em28xx *dev, struct em28xx_buffer *buf, unsigned char *usb_buf, unsigned long len) { struct em28xx_v4l2 *v4l2 = dev->v4l2; void *fieldstart, *startwrite, *startread; int linesdone, currlinedone, offset, lencopy, remain; int bytesperline = v4l2->width << 1; if (buf->pos + len > buf->length) len = buf->length - buf->pos; startread = usb_buf; remain = len; if (v4l2->progressive || buf->top_field) fieldstart = buf->vb_buf; else /* interlaced mode, even nr. of lines */ fieldstart = buf->vb_buf + bytesperline; linesdone = buf->pos / bytesperline; currlinedone = buf->pos % bytesperline; if (v4l2->progressive) offset = linesdone * bytesperline + currlinedone; else offset = linesdone * bytesperline * 2 + currlinedone; startwrite = fieldstart + offset; lencopy = bytesperline - currlinedone; lencopy = lencopy > remain ? remain : lencopy; if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) { em28xx_isocdbg("Overflow of %zu bytes past buffer end (1)\n", ((char *)startwrite + lencopy) - ((char *)buf->vb_buf + buf->length)); remain = (char *)buf->vb_buf + buf->length - (char *)startwrite; lencopy = remain; } if (lencopy <= 0) return; memcpy(startwrite, startread, lencopy); remain -= lencopy; while (remain > 0) { if (v4l2->progressive) startwrite += lencopy; else startwrite += lencopy + bytesperline; startread += lencopy; if (bytesperline > remain) lencopy = remain; else lencopy = bytesperline; if ((char *)startwrite + lencopy > (char *)buf->vb_buf + buf->length) { em28xx_isocdbg("Overflow of %zu bytes past buffer end(2)\n", ((char *)startwrite + lencopy) - ((char *)buf->vb_buf + buf->length)); remain = (char *)buf->vb_buf + buf->length - (char *)startwrite; lencopy = remain; } if (lencopy <= 0) break; memcpy(startwrite, startread, lencopy); remain -= lencopy; } buf->pos += len; } /* * Copy VBI data from USB buffer to videobuf buffer */ static void em28xx_copy_vbi(struct em28xx *dev, struct em28xx_buffer *buf, unsigned char *usb_buf, unsigned long len) { unsigned int offset; if (buf->pos + len > buf->length) len = buf->length - buf->pos; offset = buf->pos; /* Make sure the bottom field populates the second half of the frame */ if (buf->top_field == 0) offset += dev->v4l2->vbi_width * dev->v4l2->vbi_height; memcpy(buf->vb_buf + offset, usb_buf, len); buf->pos += len; } static inline void print_err_status(struct em28xx *dev, int packet, int status) { char *errmsg = "Unknown"; switch (status) { case -ENOENT: errmsg = "unlinked synchronously"; break; case -ECONNRESET: errmsg = "unlinked asynchronously"; break; case -ENOSR: errmsg = "Buffer error (overrun)"; break; case -EPIPE: errmsg = "Stalled (device not responding)"; break; case -EOVERFLOW: errmsg = "Babble (bad cable?)"; break; case -EPROTO: errmsg = "Bit-stuff error (bad cable?)"; break; case -EILSEQ: errmsg = "CRC/Timeout (could be anything)"; break; case -ETIME: errmsg = "Device does not respond"; break; } if (packet < 0) { em28xx_isocdbg("URB status %d [%s].\n", status, errmsg); } else { em28xx_isocdbg("URB packet %d, status %d [%s].\n", packet, status, errmsg); } } /* * get the next available buffer from dma queue */ static inline struct em28xx_buffer *get_next_buf(struct em28xx *dev, struct em28xx_dmaqueue *dma_q) { struct em28xx_buffer *buf; if (list_empty(&dma_q->active)) { em28xx_isocdbg("No active queue to serve\n"); return NULL; } /* Get the next buffer */ buf = list_entry(dma_q->active.next, struct em28xx_buffer, list); /* Cleans up buffer - Useful for testing for frame/URB loss */ list_del(&buf->list); buf->pos = 0; buf->vb_buf = buf->mem; return buf; } /* * Finish the current buffer if completed and prepare for the next field */ static struct em28xx_buffer * finish_field_prepare_next(struct em28xx *dev, struct em28xx_buffer *buf, struct em28xx_dmaqueue *dma_q) { struct em28xx_v4l2 *v4l2 = dev->v4l2; if (v4l2->progressive || v4l2->top_field) { /* Brand new frame */ if (buf) finish_buffer(dev, buf); buf = get_next_buf(dev, dma_q); } if (buf) { buf->top_field = v4l2->top_field; buf->pos = 0; } return buf; } /* * Process data packet according to the em2710/em2750/em28xx frame data format */ static inline void process_frame_data_em28xx(struct em28xx *dev, unsigned char *data_pkt, unsigned int data_len) { struct em28xx_v4l2 *v4l2 = dev->v4l2; struct em28xx_buffer *buf = dev->usb_ctl.vid_buf; struct em28xx_buffer *vbi_buf = dev->usb_ctl.vbi_buf; struct em28xx_dmaqueue *dma_q = &dev->vidq; struct em28xx_dmaqueue *vbi_dma_q = &dev->vbiq; /* * capture type 0 = vbi start * capture type 1 = vbi in progress * capture type 2 = video start * capture type 3 = video in progress */ if (data_len >= 4) { /* * NOTE: Headers are always 4 bytes and * never split across packets */ if (data_pkt[0] == 0x88 && data_pkt[1] == 0x88 && data_pkt[2] == 0x88 && data_pkt[3] == 0x88) { /* Continuation */ data_pkt += 4; data_len -= 4; } else if (data_pkt[0] == 0x33 && data_pkt[1] == 0x95) { /* Field start (VBI mode) */ v4l2->capture_type = 0; v4l2->vbi_read = 0; em28xx_isocdbg("VBI START HEADER !!!\n"); v4l2->top_field = !(data_pkt[2] & 1); data_pkt += 4; data_len -= 4; } else if (data_pkt[0] == 0x22 && data_pkt[1] == 0x5a) { /* Field start (VBI disabled) */ v4l2->capture_type = 2; em28xx_isocdbg("VIDEO START HEADER !!!\n"); v4l2->top_field = !(data_pkt[2] & 1); data_pkt += 4; data_len -= 4; } } /* * NOTE: With bulk transfers, intermediate data packets * have no continuation header */ if (v4l2->capture_type == 0) { vbi_buf = finish_field_prepare_next(dev, vbi_buf, vbi_dma_q); dev->usb_ctl.vbi_buf = vbi_buf; v4l2->capture_type = 1; } if (v4l2->capture_type == 1) { int vbi_size = v4l2->vbi_width * v4l2->vbi_height; int vbi_data_len = ((v4l2->vbi_read + data_len) > vbi_size) ? (vbi_size - v4l2->vbi_read) : data_len; /* Copy VBI data */ if (vbi_buf) em28xx_copy_vbi(dev, vbi_buf, data_pkt, vbi_data_len); v4l2->vbi_read += vbi_data_len; if (vbi_data_len < data_len) { /* Continue with copying video data */ v4l2->capture_type = 2; data_pkt += vbi_data_len; data_len -= vbi_data_len; } } if (v4l2->capture_type == 2) { buf = finish_field_prepare_next(dev, buf, dma_q); dev->usb_ctl.vid_buf = buf; v4l2->capture_type = 3; } if (v4l2->capture_type == 3 && buf && data_len > 0) em28xx_copy_video(dev, buf, data_pkt, data_len); } /* * Process data packet according to the em25xx/em276x/7x/8x frame data format */ static inline void process_frame_data_em25xx(struct em28xx *dev, unsigned char *data_pkt, unsigned int data_len) { struct em28xx_buffer *buf = dev->usb_ctl.vid_buf; struct em28xx_dmaqueue *dmaq = &dev->vidq; struct em28xx_v4l2 *v4l2 = dev->v4l2; bool frame_end = false; /* Check for header */ /* * NOTE: at least with bulk transfers, only the first packet * has a header and has always set the FRAME_END bit */ if (data_len >= 2) { /* em25xx header is only 2 bytes long */ if ((data_pkt[0] == EM25XX_FRMDATAHDR_BYTE1) && ((data_pkt[1] & ~EM25XX_FRMDATAHDR_BYTE2_MASK) == 0x00)) { v4l2->top_field = !(data_pkt[1] & EM25XX_FRMDATAHDR_BYTE2_FRAME_ID); frame_end = data_pkt[1] & EM25XX_FRMDATAHDR_BYTE2_FRAME_END; data_pkt += 2; data_len -= 2; } /* Finish field and prepare next (BULK only) */ if (dev->analog_xfer_bulk && frame_end) { buf = finish_field_prepare_next(dev, buf, dmaq); dev->usb_ctl.vid_buf = buf; } /* * NOTE: in ISOC mode when a new frame starts and buf==NULL, * we COULD already prepare a buffer here to avoid skipping the * first frame. */ } /* Copy data */ if (buf && data_len > 0) em28xx_copy_video(dev, buf, data_pkt, data_len); /* Finish frame (ISOC only) => avoids lag of 1 frame */ if (!dev->analog_xfer_bulk && frame_end) { buf = finish_field_prepare_next(dev, buf, dmaq); dev->usb_ctl.vid_buf = buf; } /* * NOTES: * * 1) Tested with USB bulk transfers only ! * The wording in the datasheet suggests that isoc might work different. * The current code assumes that with isoc transfers each packet has a * header like with the other em28xx devices. * * 2) Support for interlaced mode is pure theory. It has not been * tested and it is unknown if these devices actually support it. */ } /* Processes and copies the URB data content (video and VBI data) */ static inline int em28xx_urb_data_copy(struct em28xx *dev, struct urb *urb) { int xfer_bulk, num_packets, i; unsigned char *usb_data_pkt; unsigned int usb_data_len; if (!dev) return 0; if (dev->disconnected) return 0; if (urb->status < 0) print_err_status(dev, -1, urb->status); xfer_bulk = usb_pipebulk(urb->pipe); if (xfer_bulk) /* bulk */ num_packets = 1; else /* isoc */ num_packets = urb->number_of_packets; for (i = 0; i < num_packets; i++) { if (xfer_bulk) { /* bulk */ usb_data_len = urb->actual_length; usb_data_pkt = urb->transfer_buffer; } else { /* isoc */ if (urb->iso_frame_desc[i].status < 0) { print_err_status(dev, i, urb->iso_frame_desc[i].status); if (urb->iso_frame_desc[i].status != -EPROTO) continue; } usb_data_len = urb->iso_frame_desc[i].actual_length; if (usb_data_len > dev->max_pkt_size) { em28xx_isocdbg("packet bigger than packet size"); continue; } usb_data_pkt = urb->transfer_buffer + urb->iso_frame_desc[i].offset; } if (usb_data_len == 0) { /* NOTE: happens very often with isoc transfers */ /* em28xx_usbdbg("packet %d is empty",i); - spammy */ continue; } if (dev->is_em25xx) process_frame_data_em25xx(dev, usb_data_pkt, usb_data_len); else process_frame_data_em28xx(dev, usb_data_pkt, usb_data_len); } return 1; } static int get_resource(enum v4l2_buf_type f_type) { switch (f_type) { case V4L2_BUF_TYPE_VIDEO_CAPTURE: return EM28XX_RESOURCE_VIDEO; case V4L2_BUF_TYPE_VBI_CAPTURE: return EM28XX_RESOURCE_VBI; default: WARN_ON(1); return -1; /* Indicate that device is busy */ } } /* Usage lock check functions */ static int res_get(struct em28xx *dev, enum v4l2_buf_type f_type) { int res_type = get_resource(f_type); /* is it free? */ if (dev->resources & res_type) { /* no, someone else uses it */ return -EBUSY; } /* it's free, grab it */ dev->resources |= res_type; em28xx_videodbg("res: get %d\n", res_type); return 0; } static void res_free(struct em28xx *dev, enum v4l2_buf_type f_type) { int res_type = get_resource(f_type); dev->resources &= ~res_type; em28xx_videodbg("res: put %d\n", res_type); } static void em28xx_v4l2_media_release(struct em28xx *dev) { #ifdef CONFIG_MEDIA_CONTROLLER int i; for (i = 0; i < MAX_EM28XX_INPUT; i++) { if (!INPUT(i)->type) return; media_device_unregister_entity(&dev->input_ent[i]); } #endif } /* * Media Controller helper functions */ static int em28xx_enable_analog_tuner(struct em28xx *dev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev = dev->media_dev; struct em28xx_v4l2 *v4l2 = dev->v4l2; struct media_entity *source; struct media_link *link, *found_link = NULL; int ret, active_links = 0; if (!mdev || !v4l2->decoder) return 0; /* * This will find the tuner that is connected into the decoder. * Technically, this is not 100% correct, as the device may be * using an analog input instead of the tuner. However, as we can't * do DVB streaming while the DMA engine is being used for V4L2, * this should be enough for the actual needs. */ list_for_each_entry(link, &v4l2->decoder->links, list) { if (link->sink->entity == v4l2->decoder) { found_link = link; if (link->flags & MEDIA_LNK_FL_ENABLED) active_links++; break; } } if (active_links == 1 || !found_link) return 0; source = found_link->source->entity; list_for_each_entry(link, &source->links, list) { struct media_entity *sink; int flags = 0; sink = link->sink->entity; if (sink == v4l2->decoder) flags = MEDIA_LNK_FL_ENABLED; ret = media_entity_setup_link(link, flags); if (ret) { dev_err(&dev->intf->dev, "Couldn't change link %s->%s to %s. Error %d\n", source->name, sink->name, flags ? "enabled" : "disabled", ret); return ret; } em28xx_videodbg("link %s->%s was %s\n", source->name, sink->name, flags ? "ENABLED" : "disabled"); } #endif return 0; } static const char * const iname[] = { [EM28XX_VMUX_COMPOSITE] = "Composite", [EM28XX_VMUX_SVIDEO] = "S-Video", [EM28XX_VMUX_TELEVISION] = "Television", [EM28XX_RADIO] = "Radio", }; static void em28xx_v4l2_create_entities(struct em28xx *dev) { #if defined(CONFIG_MEDIA_CONTROLLER) struct em28xx_v4l2 *v4l2 = dev->v4l2; int ret, i; /* Initialize Video, VBI and Radio pads */ v4l2->video_pad.flags = MEDIA_PAD_FL_SINK; ret = media_entity_pads_init(&v4l2->vdev.entity, 1, &v4l2->video_pad); if (ret < 0) dev_err(&dev->intf->dev, "failed to initialize video media entity!\n"); if (em28xx_vbi_supported(dev)) { v4l2->vbi_pad.flags = MEDIA_PAD_FL_SINK; ret = media_entity_pads_init(&v4l2->vbi_dev.entity, 1, &v4l2->vbi_pad); if (ret < 0) dev_err(&dev->intf->dev, "failed to initialize vbi media entity!\n"); } /* Webcams don't have input connectors */ if (dev->is_webcam) return; /* Create entities for each input connector */ for (i = 0; i < MAX_EM28XX_INPUT; i++) { struct media_entity *ent = &dev->input_ent[i]; if (!INPUT(i)->type) break; ent->name = iname[INPUT(i)->type]; ent->flags = MEDIA_ENT_FL_CONNECTOR; dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE; switch (INPUT(i)->type) { case EM28XX_VMUX_COMPOSITE: ent->function = MEDIA_ENT_F_CONN_COMPOSITE; break; case EM28XX_VMUX_SVIDEO: ent->function = MEDIA_ENT_F_CONN_SVIDEO; break; default: /* EM28XX_VMUX_TELEVISION or EM28XX_RADIO */ if (dev->tuner_type != TUNER_ABSENT) ent->function = MEDIA_ENT_F_CONN_RF; break; } ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]); if (ret < 0) dev_err(&dev->intf->dev, "failed to initialize input pad[%d]!\n", i); ret = media_device_register_entity(dev->media_dev, ent); if (ret < 0) dev_err(&dev->intf->dev, "failed to register input entity %d!\n", i); } #endif } /* * Videobuf2 operations */ static int queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct em28xx *dev = vb2_get_drv_priv(vq); struct em28xx_v4l2 *v4l2 = dev->v4l2; unsigned long size = (v4l2->width * v4l2->height * v4l2->format->depth + 7) >> 3; if (*nplanes) return sizes[0] < size ? -EINVAL : 0; *nplanes = 1; sizes[0] = size; em28xx_enable_analog_tuner(dev); return 0; } static int buffer_prepare(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue); struct em28xx_v4l2 *v4l2 = dev->v4l2; unsigned long size; em28xx_videodbg("%s, field=%d\n", __func__, vbuf->field); size = (v4l2->width * v4l2->height * v4l2->format->depth + 7) >> 3; if (vb2_plane_size(vb, 0) < size) { em28xx_videodbg("%s data will not fit into plane (%lu < %lu)\n", __func__, vb2_plane_size(vb, 0), size); return -EINVAL; } vb2_set_plane_payload(vb, 0, size); return 0; } int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count) { struct em28xx *dev = vb2_get_drv_priv(vq); struct em28xx_v4l2 *v4l2 = dev->v4l2; struct v4l2_frequency f; struct v4l2_fh *owner; int rc = 0; em28xx_videodbg("%s\n", __func__); dev->v4l2->field_count = 0; /* * Make sure streaming is not already in progress for this type * of filehandle (e.g. video, vbi) */ rc = res_get(dev, vq->type); if (rc) return rc; if (v4l2->streaming_users == 0) { /* First active streaming user, so allocate all the URBs */ /* Allocate the USB bandwidth */ em28xx_set_alternate(dev); /* * Needed, since GPIO might have disabled power of * some i2c device */ em28xx_wake_i2c(dev); v4l2->capture_type = -1; rc = em28xx_init_usb_xfer(dev, EM28XX_ANALOG_MODE, dev->analog_xfer_bulk, EM28XX_NUM_BUFS, dev->max_pkt_size, dev->packet_multiplier, em28xx_urb_data_copy); if (rc < 0) return rc; /* * djh: it's not clear whether this code is still needed. I'm * leaving it in here for now entirely out of concern for * backward compatibility (the old code did it) */ /* Ask tuner to go to analog or radio mode */ memset(&f, 0, sizeof(f)); f.frequency = v4l2->frequency; owner = (struct v4l2_fh *)vq->owner; if (owner && owner->vdev->vfl_type == VFL_TYPE_RADIO) f.type = V4L2_TUNER_RADIO; else f.type = V4L2_TUNER_ANALOG_TV; v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, s_frequency, &f); /* Enable video stream at TV decoder */ v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 1); } v4l2->streaming_users++; return rc; } static void em28xx_stop_streaming(struct vb2_queue *vq) { struct em28xx *dev = vb2_get_drv_priv(vq); struct em28xx_v4l2 *v4l2 = dev->v4l2; struct em28xx_dmaqueue *vidq = &dev->vidq; unsigned long flags = 0; em28xx_videodbg("%s\n", __func__); res_free(dev, vq->type); if (v4l2->streaming_users-- == 1) { /* Disable video stream at TV decoder */ v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 0); /* Last active user, so shutdown all the URBS */ em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); } spin_lock_irqsave(&dev->slock, flags); if (dev->usb_ctl.vid_buf) { vb2_buffer_done(&dev->usb_ctl.vid_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); dev->usb_ctl.vid_buf = NULL; } while (!list_empty(&vidq->active)) { struct em28xx_buffer *buf; buf = list_entry(vidq->active.next, struct em28xx_buffer, list); list_del(&buf->list); vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); } spin_unlock_irqrestore(&dev->slock, flags); } void em28xx_stop_vbi_streaming(struct vb2_queue *vq) { struct em28xx *dev = vb2_get_drv_priv(vq); struct em28xx_v4l2 *v4l2 = dev->v4l2; struct em28xx_dmaqueue *vbiq = &dev->vbiq; unsigned long flags = 0; em28xx_videodbg("%s\n", __func__); res_free(dev, vq->type); if (v4l2->streaming_users-- == 1) { /* Disable video stream at TV decoder */ v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_stream, 0); /* Last active user, so shutdown all the URBS */ em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); } spin_lock_irqsave(&dev->slock, flags); if (dev->usb_ctl.vbi_buf) { vb2_buffer_done(&dev->usb_ctl.vbi_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); dev->usb_ctl.vbi_buf = NULL; } while (!list_empty(&vbiq->active)) { struct em28xx_buffer *buf; buf = list_entry(vbiq->active.next, struct em28xx_buffer, list); list_del(&buf->list); vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); } spin_unlock_irqrestore(&dev->slock, flags); } static void buffer_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct em28xx *dev = vb2_get_drv_priv(vb->vb2_queue); struct em28xx_buffer *buf = container_of(vbuf, struct em28xx_buffer, vb); struct em28xx_dmaqueue *vidq = &dev->vidq; unsigned long flags = 0; em28xx_videodbg("%s\n", __func__); buf->mem = vb2_plane_vaddr(vb, 0); buf->length = vb2_plane_size(vb, 0); spin_lock_irqsave(&dev->slock, flags); list_add_tail(&buf->list, &vidq->active); spin_unlock_irqrestore(&dev->slock, flags); } static const struct vb2_ops em28xx_video_qops = { .queue_setup = queue_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .start_streaming = em28xx_start_analog_streaming, .stop_streaming = em28xx_stop_streaming, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, }; static int em28xx_vb2_setup(struct em28xx *dev) { int rc; struct vb2_queue *q; struct em28xx_v4l2 *v4l2 = dev->v4l2; /* Setup Videobuf2 for Video capture */ q = &v4l2->vb_vidq; q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR | VB2_DMABUF; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->drv_priv = dev; q->buf_struct_size = sizeof(struct em28xx_buffer); q->ops = &em28xx_video_qops; q->mem_ops = &vb2_vmalloc_memops; rc = vb2_queue_init(q); if (rc < 0) return rc; /* Setup Videobuf2 for VBI capture */ q = &v4l2->vb_vbiq; q->type = V4L2_BUF_TYPE_VBI_CAPTURE; q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR; q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; q->drv_priv = dev; q->buf_struct_size = sizeof(struct em28xx_buffer); q->ops = &em28xx_vbi_qops; q->mem_ops = &vb2_vmalloc_memops; rc = vb2_queue_init(q); if (rc < 0) return rc; return 0; } /* * v4l2 interface */ static void video_mux(struct em28xx *dev, int index) { struct v4l2_device *v4l2_dev = &dev->v4l2->v4l2_dev; dev->ctl_input = index; dev->ctl_ainput = INPUT(index)->amux; dev->ctl_aoutput = INPUT(index)->aout; if (!dev->ctl_aoutput) dev->ctl_aoutput = EM28XX_AOUT_MASTER; v4l2_device_call_all(v4l2_dev, 0, video, s_routing, INPUT(index)->vmux, 0, 0); if (dev->has_msp34xx) { if (dev->i2s_speed) { v4l2_device_call_all(v4l2_dev, 0, audio, s_i2s_clock_freq, dev->i2s_speed); } /* Note: this is msp3400 specific */ v4l2_device_call_all(v4l2_dev, 0, audio, s_routing, dev->ctl_ainput, MSP_OUTPUT(MSP_SC_IN_DSP_SCART1), 0); } if (dev->board.adecoder != EM28XX_NOADECODER) { v4l2_device_call_all(v4l2_dev, 0, audio, s_routing, dev->ctl_ainput, dev->ctl_aoutput, 0); } em28xx_audio_analog_set(dev); } static void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv) { struct em28xx *dev = priv; /* * In the case of non-AC97 volume controls, we still need * to do some setups at em28xx, in order to mute/unmute * and to adjust audio volume. However, the value ranges * should be checked by the corresponding V4L subdriver. */ switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: dev->mute = ctrl->val; em28xx_audio_analog_set(dev); break; case V4L2_CID_AUDIO_VOLUME: dev->volume = ctrl->val; em28xx_audio_analog_set(dev); break; } } static int em28xx_s_ctrl(struct v4l2_ctrl *ctrl) { struct em28xx_v4l2 *v4l2 = container_of(ctrl->handler, struct em28xx_v4l2, ctrl_handler); struct em28xx *dev = v4l2->dev; int ret = -EINVAL; switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: dev->mute = ctrl->val; ret = em28xx_audio_analog_set(dev); break; case V4L2_CID_AUDIO_VOLUME: dev->volume = ctrl->val; ret = em28xx_audio_analog_set(dev); break; case V4L2_CID_CONTRAST: ret = em28xx_write_reg(dev, EM28XX_R20_YGAIN, ctrl->val); break; case V4L2_CID_BRIGHTNESS: ret = em28xx_write_reg(dev, EM28XX_R21_YOFFSET, ctrl->val); break; case V4L2_CID_SATURATION: ret = em28xx_write_reg(dev, EM28XX_R22_UVGAIN, ctrl->val); break; case V4L2_CID_BLUE_BALANCE: ret = em28xx_write_reg(dev, EM28XX_R23_UOFFSET, ctrl->val); break; case V4L2_CID_RED_BALANCE: ret = em28xx_write_reg(dev, EM28XX_R24_VOFFSET, ctrl->val); break; case V4L2_CID_SHARPNESS: ret = em28xx_write_reg(dev, EM28XX_R25_SHARPNESS, ctrl->val); break; } return (ret < 0) ? ret : 0; } static const struct v4l2_ctrl_ops em28xx_ctrl_ops = { .s_ctrl = em28xx_s_ctrl, }; static void size_to_scale(struct em28xx *dev, unsigned int width, unsigned int height, unsigned int *hscale, unsigned int *vscale) { unsigned int maxw = norm_maxw(dev); unsigned int maxh = norm_maxh(dev); *hscale = (((unsigned long)maxw) << 12) / width - 4096L; if (*hscale > EM28XX_HVSCALE_MAX) *hscale = EM28XX_HVSCALE_MAX; *vscale = (((unsigned long)maxh) << 12) / height - 4096L; if (*vscale > EM28XX_HVSCALE_MAX) *vscale = EM28XX_HVSCALE_MAX; } static void scale_to_size(struct em28xx *dev, unsigned int hscale, unsigned int vscale, unsigned int *width, unsigned int *height) { unsigned int maxw = norm_maxw(dev); unsigned int maxh = norm_maxh(dev); *width = (((unsigned long)maxw) << 12) / (hscale + 4096L); *height = (((unsigned long)maxh) << 12) / (vscale + 4096L); /* Don't let width or height to be zero */ if (*width < 1) *width = 1; if (*height < 1) *height = 1; } /* * IOCTL vidioc handling */ static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; f->fmt.pix.width = v4l2->width; f->fmt.pix.height = v4l2->height; f->fmt.pix.pixelformat = v4l2->format->fourcc; f->fmt.pix.bytesperline = (v4l2->width * v4l2->format->depth + 7) >> 3; f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * v4l2->height; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; /* FIXME: TOP? NONE? BOTTOM? ALTENATE? */ if (v4l2->progressive) f->fmt.pix.field = V4L2_FIELD_NONE; else f->fmt.pix.field = v4l2->interlaced_fieldmode ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; return 0; } static struct em28xx_fmt *format_by_fourcc(unsigned int fourcc) { unsigned int i; for (i = 0; i < ARRAY_SIZE(format); i++) if (format[i].fourcc == fourcc) return &format[i]; return NULL; } static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; unsigned int width = f->fmt.pix.width; unsigned int height = f->fmt.pix.height; unsigned int maxw = norm_maxw(dev); unsigned int maxh = norm_maxh(dev); unsigned int hscale, vscale; struct em28xx_fmt *fmt; fmt = format_by_fourcc(f->fmt.pix.pixelformat); if (!fmt) { fmt = &format[0]; em28xx_videodbg("Fourcc format (%08x) invalid. Using default (%08x).\n", f->fmt.pix.pixelformat, fmt->fourcc); } if (dev->board.is_em2800) { /* the em2800 can only scale down to 50% */ height = height > (3 * maxh / 4) ? maxh : maxh / 2; width = width > (3 * maxw / 4) ? maxw : maxw / 2; /* * MaxPacketSize for em2800 is too small to capture at full * resolution use half of maxw as the scaler can only scale * to 50% */ if (width == maxw && height == maxh) width /= 2; } else { /* * width must even because of the YUYV format * height must be even because of interlacing */ v4l_bound_align_image(&width, 48, maxw, 1, &height, 32, maxh, 1, 0); } /* Avoid division by zero at size_to_scale */ if (width < 1) width = 1; if (height < 1) height = 1; size_to_scale(dev, width, height, &hscale, &vscale); scale_to_size(dev, hscale, vscale, &width, &height); f->fmt.pix.width = width; f->fmt.pix.height = height; f->fmt.pix.pixelformat = fmt->fourcc; f->fmt.pix.bytesperline = (width * fmt->depth + 7) >> 3; f->fmt.pix.sizeimage = f->fmt.pix.bytesperline * height; f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; if (v4l2->progressive) f->fmt.pix.field = V4L2_FIELD_NONE; else f->fmt.pix.field = v4l2->interlaced_fieldmode ? V4L2_FIELD_INTERLACED : V4L2_FIELD_TOP; f->fmt.pix.priv = 0; return 0; } static int em28xx_set_video_format(struct em28xx *dev, unsigned int fourcc, unsigned int width, unsigned int height) { struct em28xx_fmt *fmt; struct em28xx_v4l2 *v4l2 = dev->v4l2; fmt = format_by_fourcc(fourcc); if (!fmt) return -EINVAL; v4l2->format = fmt; v4l2->width = width; v4l2->height = height; /* set new image size */ size_to_scale(dev, v4l2->width, v4l2->height, &v4l2->hscale, &v4l2->vscale); em28xx_resolution_set(dev); return 0; } static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; if (vb2_is_busy(&v4l2->vb_vidq)) return -EBUSY; vidioc_try_fmt_vid_cap(file, priv, f); return em28xx_set_video_format(dev, f->fmt.pix.pixelformat, f->fmt.pix.width, f->fmt.pix.height); } static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm) { struct em28xx *dev = video_drvdata(file); *norm = dev->v4l2->norm; return 0; } static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm) { struct em28xx *dev = video_drvdata(file); v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, video, querystd, norm); return 0; } static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id norm) { struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; struct v4l2_format f; if (norm == v4l2->norm) return 0; if (v4l2->streaming_users > 0) return -EBUSY; v4l2->norm = norm; /* Adjusts width/height, if needed */ f.fmt.pix.width = 720; f.fmt.pix.height = (norm & V4L2_STD_525_60) ? 480 : 576; vidioc_try_fmt_vid_cap(file, priv, &f); /* set new image size */ v4l2->width = f.fmt.pix.width; v4l2->height = f.fmt.pix.height; size_to_scale(dev, v4l2->width, v4l2->height, &v4l2->hscale, &v4l2->vscale); em28xx_resolution_set(dev); v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_std, v4l2->norm); return 0; } static int vidioc_g_parm(struct file *file, void *priv, struct v4l2_streamparm *p) { struct v4l2_subdev_frame_interval ival = { 0 }; struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; int rc = 0; if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; p->parm.capture.readbuffers = EM28XX_MIN_BUF; p->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; if (dev->is_webcam) { rc = v4l2_device_call_until_err(&v4l2->v4l2_dev, 0, video, g_frame_interval, &ival); if (!rc) p->parm.capture.timeperframe = ival.interval; } else { v4l2_video_std_frame_period(v4l2->norm, &p->parm.capture.timeperframe); } return rc; } static int vidioc_s_parm(struct file *file, void *priv, struct v4l2_streamparm *p) { struct em28xx *dev = video_drvdata(file); struct v4l2_subdev_frame_interval ival = { 0, p->parm.capture.timeperframe }; int rc = 0; if (!dev->is_webcam) return -ENOTTY; if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; memset(&p->parm, 0, sizeof(p->parm)); p->parm.capture.readbuffers = EM28XX_MIN_BUF; p->parm.capture.capability = V4L2_CAP_TIMEPERFRAME; rc = v4l2_device_call_until_err(&dev->v4l2->v4l2_dev, 0, video, s_frame_interval, &ival); if (!rc) p->parm.capture.timeperframe = ival.interval; return rc; } static int vidioc_enum_input(struct file *file, void *priv, struct v4l2_input *i) { struct em28xx *dev = video_drvdata(file); unsigned int n; int j; n = i->index; if (n >= MAX_EM28XX_INPUT) return -EINVAL; if (!INPUT(n)->type) return -EINVAL; i->type = V4L2_INPUT_TYPE_CAMERA; strscpy(i->name, iname[INPUT(n)->type], sizeof(i->name)); if (INPUT(n)->type == EM28XX_VMUX_TELEVISION) i->type = V4L2_INPUT_TYPE_TUNER; i->std = dev->v4l2->vdev.tvnorms; /* webcams do not have the STD API */ if (dev->is_webcam) i->capabilities = 0; /* Dynamically generates an audioset bitmask */ i->audioset = 0; for (j = 0; j < MAX_EM28XX_INPUT; j++) if (dev->amux_map[j] != EM28XX_AMUX_UNUSED) i->audioset |= 1 << j; return 0; } static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) { struct em28xx *dev = video_drvdata(file); *i = dev->ctl_input; return 0; } static int vidioc_s_input(struct file *file, void *priv, unsigned int i) { struct em28xx *dev = video_drvdata(file); if (i >= MAX_EM28XX_INPUT) return -EINVAL; if (!INPUT(i)->type) return -EINVAL; video_mux(dev, i); return 0; } static int em28xx_fill_audio_input(struct em28xx *dev, const char *s, struct v4l2_audio *a, unsigned int index) { unsigned int idx = dev->amux_map[index]; /* * With msp3400, almost all mappings use the default (amux = 0). * The only one may use a different value is WinTV USB2, where it * can also be SCART1 input. * As it is very doubtful that we would see new boards with msp3400, * let's just reuse the existing switch. */ if (dev->has_msp34xx && idx != EM28XX_AMUX_UNUSED) idx = EM28XX_AMUX_LINE_IN; switch (idx) { case EM28XX_AMUX_VIDEO: strscpy(a->name, "Television", sizeof(a->name)); break; case EM28XX_AMUX_LINE_IN: strscpy(a->name, "Line In", sizeof(a->name)); break; case EM28XX_AMUX_VIDEO2: strscpy(a->name, "Television alt", sizeof(a->name)); break; case EM28XX_AMUX_PHONE: strscpy(a->name, "Phone", sizeof(a->name)); break; case EM28XX_AMUX_MIC: strscpy(a->name, "Mic", sizeof(a->name)); break; case EM28XX_AMUX_CD: strscpy(a->name, "CD", sizeof(a->name)); break; case EM28XX_AMUX_AUX: strscpy(a->name, "Aux", sizeof(a->name)); break; case EM28XX_AMUX_PCM_OUT: strscpy(a->name, "PCM", sizeof(a->name)); break; case EM28XX_AMUX_UNUSED: default: return -EINVAL; } a->index = index; a->capability = V4L2_AUDCAP_STEREO; em28xx_videodbg("%s: audio input index %d is '%s'\n", s, a->index, a->name); return 0; } static int vidioc_enumaudio(struct file *file, void *fh, struct v4l2_audio *a) { struct em28xx *dev = video_drvdata(file); if (a->index >= MAX_EM28XX_INPUT) return -EINVAL; return em28xx_fill_audio_input(dev, __func__, a, a->index); } static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) { struct em28xx *dev = video_drvdata(file); int i; for (i = 0; i < MAX_EM28XX_INPUT; i++) if (dev->ctl_ainput == dev->amux_map[i]) return em28xx_fill_audio_input(dev, __func__, a, i); /* Should never happen! */ return -EINVAL; } static int vidioc_s_audio(struct file *file, void *priv, const struct v4l2_audio *a) { struct em28xx *dev = video_drvdata(file); int idx, i; if (a->index >= MAX_EM28XX_INPUT) return -EINVAL; idx = dev->amux_map[a->index]; if (idx == EM28XX_AMUX_UNUSED) return -EINVAL; dev->ctl_ainput = idx; /* * FIXME: This is wrong, as different inputs at em28xx_cards * may have different audio outputs. So, the right thing * to do is to implement VIDIOC_G_AUDOUT/VIDIOC_S_AUDOUT. * With the current board definitions, this would work fine, * as, currently, all boards fit. */ for (i = 0; i < MAX_EM28XX_INPUT; i++) if (idx == dev->amux_map[i]) break; if (i == MAX_EM28XX_INPUT) return -EINVAL; dev->ctl_aoutput = INPUT(i)->aout; if (!dev->ctl_aoutput) dev->ctl_aoutput = EM28XX_AOUT_MASTER; em28xx_videodbg("%s: set audio input to %d\n", __func__, dev->ctl_ainput); return 0; } static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct em28xx *dev = video_drvdata(file); if (t->index != 0) return -EINVAL; strscpy(t->name, "Tuner", sizeof(t->name)); v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, g_tuner, t); return 0; } static int vidioc_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) { struct em28xx *dev = video_drvdata(file); if (t->index != 0) return -EINVAL; v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, s_tuner, t); return 0; } static int vidioc_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; if (f->tuner != 0) return -EINVAL; f->frequency = v4l2->frequency; return 0; } static int vidioc_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *f) { struct v4l2_frequency new_freq = *f; struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; if (f->tuner != 0) return -EINVAL; v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, s_frequency, f); v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, g_frequency, &new_freq); v4l2->frequency = new_freq.frequency; return 0; } #ifdef CONFIG_VIDEO_ADV_DEBUG static int vidioc_g_chip_info(struct file *file, void *priv, struct v4l2_dbg_chip_info *chip) { struct em28xx *dev = video_drvdata(file); if (chip->match.addr > 1) return -EINVAL; if (chip->match.addr == 1) strscpy(chip->name, "ac97", sizeof(chip->name)); else strscpy(chip->name, dev->v4l2->v4l2_dev.name, sizeof(chip->name)); return 0; } static int em28xx_reg_len(int reg) { switch (reg) { case EM28XX_R40_AC97LSB: case EM28XX_R30_HSCALELOW: case EM28XX_R32_VSCALELOW: return 2; default: return 1; } } static int vidioc_g_register(struct file *file, void *priv, struct v4l2_dbg_register *reg) { struct em28xx *dev = video_drvdata(file); int ret; if (reg->match.addr > 1) return -EINVAL; if (reg->match.addr) { ret = em28xx_read_ac97(dev, reg->reg); if (ret < 0) return ret; reg->val = ret; reg->size = 1; return 0; } /* Match host */ reg->size = em28xx_reg_len(reg->reg); if (reg->size == 1) { ret = em28xx_read_reg(dev, reg->reg); if (ret < 0) return ret; reg->val = ret; } else { __le16 val = 0; ret = dev->em28xx_read_reg_req_len(dev, USB_REQ_GET_STATUS, reg->reg, (char *)&val, 2); if (ret < 0) return ret; reg->val = le16_to_cpu(val); } return 0; } static int vidioc_s_register(struct file *file, void *priv, const struct v4l2_dbg_register *reg) { struct em28xx *dev = video_drvdata(file); __le16 buf; if (reg->match.addr > 1) return -EINVAL; if (reg->match.addr) return em28xx_write_ac97(dev, reg->reg, reg->val); /* Match host */ buf = cpu_to_le16(reg->val); return em28xx_write_regs(dev, reg->reg, (char *)&buf, em28xx_reg_len(reg->reg)); } #endif static int vidioc_querycap(struct file *file, void *priv, struct v4l2_capability *cap) { struct video_device *vdev = video_devdata(file); struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; struct usb_device *udev = interface_to_usbdev(dev->intf); strscpy(cap->driver, "em28xx", sizeof(cap->driver)); strscpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card)); usb_make_path(udev, cap->bus_info, sizeof(cap->bus_info)); if (vdev->vfl_type == VFL_TYPE_GRABBER) cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; else if (vdev->vfl_type == VFL_TYPE_RADIO) cap->device_caps = V4L2_CAP_RADIO; else cap->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_VBI_CAPTURE; if (dev->int_audio_type != EM28XX_INT_AUDIO_NONE) cap->device_caps |= V4L2_CAP_AUDIO; if (dev->tuner_type != TUNER_ABSENT) cap->device_caps |= V4L2_CAP_TUNER; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS | V4L2_CAP_READWRITE | V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; if (video_is_registered(&v4l2->vbi_dev)) cap->capabilities |= V4L2_CAP_VBI_CAPTURE; if (video_is_registered(&v4l2->radio_dev)) cap->capabilities |= V4L2_CAP_RADIO; return 0; } static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (unlikely(f->index >= ARRAY_SIZE(format))) return -EINVAL; strscpy(f->description, format[f->index].name, sizeof(f->description)); f->pixelformat = format[f->index].fourcc; return 0; } static int vidioc_enum_framesizes(struct file *file, void *priv, struct v4l2_frmsizeenum *fsize) { struct em28xx *dev = video_drvdata(file); struct em28xx_fmt *fmt; unsigned int maxw = norm_maxw(dev); unsigned int maxh = norm_maxh(dev); fmt = format_by_fourcc(fsize->pixel_format); if (!fmt) { em28xx_videodbg("Fourcc format (%08x) invalid.\n", fsize->pixel_format); return -EINVAL; } if (dev->board.is_em2800) { if (fsize->index > 1) return -EINVAL; fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; fsize->discrete.width = maxw / (1 + fsize->index); fsize->discrete.height = maxh / (1 + fsize->index); return 0; } if (fsize->index != 0) return -EINVAL; /* Report a continuous range */ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE; scale_to_size(dev, EM28XX_HVSCALE_MAX, EM28XX_HVSCALE_MAX, &fsize->stepwise.min_width, &fsize->stepwise.min_height); if (fsize->stepwise.min_width < 48) fsize->stepwise.min_width = 48; if (fsize->stepwise.min_height < 38) fsize->stepwise.min_height = 38; fsize->stepwise.max_width = maxw; fsize->stepwise.max_height = maxh; fsize->stepwise.step_width = 1; fsize->stepwise.step_height = 1; return 0; } /* RAW VBI ioctls */ static int vidioc_g_fmt_vbi_cap(struct file *file, void *priv, struct v4l2_format *format) { struct em28xx *dev = video_drvdata(file); struct em28xx_v4l2 *v4l2 = dev->v4l2; format->fmt.vbi.samples_per_line = v4l2->vbi_width; format->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY; format->fmt.vbi.offset = 0; format->fmt.vbi.flags = 0; format->fmt.vbi.sampling_rate = 6750000 * 4 / 2; format->fmt.vbi.count[0] = v4l2->vbi_height; format->fmt.vbi.count[1] = v4l2->vbi_height; memset(format->fmt.vbi.reserved, 0, sizeof(format->fmt.vbi.reserved)); /* Varies by video standard (NTSC, PAL, etc.) */ if (v4l2->norm & V4L2_STD_525_60) { /* NTSC */ format->fmt.vbi.start[0] = 10; format->fmt.vbi.start[1] = 273; } else if (v4l2->norm & V4L2_STD_625_50) { /* PAL */ format->fmt.vbi.start[0] = 6; format->fmt.vbi.start[1] = 318; } return 0; } /* * RADIO ESPECIFIC IOCTLS */ static int radio_g_tuner(struct file *file, void *priv, struct v4l2_tuner *t) { struct em28xx *dev = video_drvdata(file); if (unlikely(t->index > 0)) return -EINVAL; strscpy(t->name, "Radio", sizeof(t->name)); v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, g_tuner, t); return 0; } static int radio_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *t) { struct em28xx *dev = video_drvdata(file); if (t->index != 0) return -EINVAL; v4l2_device_call_all(&dev->v4l2->v4l2_dev, 0, tuner, s_tuner, t); return 0; } /* * em28xx_free_v4l2() - Free struct em28xx_v4l2 * * @ref: struct kref for struct em28xx_v4l2 * * Called when all users of struct em28xx_v4l2 are gone */ static void em28xx_free_v4l2(struct kref *ref) { struct em28xx_v4l2 *v4l2 = container_of(ref, struct em28xx_v4l2, ref); v4l2->dev->v4l2 = NULL; kfree(v4l2); } /* * em28xx_v4l2_open() * inits the device and starts isoc transfer */ static int em28xx_v4l2_open(struct file *filp) { struct video_device *vdev = video_devdata(filp); struct em28xx *dev = video_drvdata(filp); struct em28xx_v4l2 *v4l2 = dev->v4l2; enum v4l2_buf_type fh_type = 0; int ret; switch (vdev->vfl_type) { case VFL_TYPE_GRABBER: fh_type = V4L2_BUF_TYPE_VIDEO_CAPTURE; break; case VFL_TYPE_VBI: fh_type = V4L2_BUF_TYPE_VBI_CAPTURE; break; case VFL_TYPE_RADIO: break; default: return -EINVAL; } em28xx_videodbg("open dev=%s type=%s users=%d\n", video_device_node_name(vdev), v4l2_type_names[fh_type], v4l2->users); if (mutex_lock_interruptible(&dev->lock)) return -ERESTARTSYS; ret = v4l2_fh_open(filp); if (ret) { dev_err(&dev->intf->dev, "%s: v4l2_fh_open() returned error %d\n", __func__, ret); mutex_unlock(&dev->lock); return ret; } if (v4l2->users == 0) { em28xx_set_mode(dev, EM28XX_ANALOG_MODE); if (vdev->vfl_type != VFL_TYPE_RADIO) em28xx_resolution_set(dev); /* * Needed, since GPIO might have disabled power * of some i2c devices */ em28xx_wake_i2c(dev); } if (vdev->vfl_type == VFL_TYPE_RADIO) { em28xx_videodbg("video_open: setting radio device\n"); v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, s_radio); } kref_get(&dev->ref); kref_get(&v4l2->ref); v4l2->users++; mutex_unlock(&dev->lock); return 0; } /* * em28xx_v4l2_fini() * unregisters the v4l2,i2c and usb devices * called when the device gets disconected or at module unload */ static int em28xx_v4l2_fini(struct em28xx *dev) { struct em28xx_v4l2 *v4l2 = dev->v4l2; if (dev->is_audio_only) { /* Shouldn't initialize IR for this interface */ return 0; } if (!dev->has_video) { /* This device does not support the v4l2 extension */ return 0; } if (!v4l2) return 0; dev_info(&dev->intf->dev, "Closing video extension\n"); mutex_lock(&dev->lock); v4l2_device_disconnect(&v4l2->v4l2_dev); em28xx_uninit_usb_xfer(dev, EM28XX_ANALOG_MODE); em28xx_v4l2_media_release(dev); if (video_is_registered(&v4l2->radio_dev)) { dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n", video_device_node_name(&v4l2->radio_dev)); video_unregister_device(&v4l2->radio_dev); } if (video_is_registered(&v4l2->vbi_dev)) { dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n", video_device_node_name(&v4l2->vbi_dev)); video_unregister_device(&v4l2->vbi_dev); } if (video_is_registered(&v4l2->vdev)) { dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n", video_device_node_name(&v4l2->vdev)); video_unregister_device(&v4l2->vdev); } v4l2_ctrl_handler_free(&v4l2->ctrl_handler); v4l2_device_unregister(&v4l2->v4l2_dev); kref_put(&v4l2->ref, em28xx_free_v4l2); mutex_unlock(&dev->lock); kref_put(&dev->ref, em28xx_free_device); return 0; } static int em28xx_v4l2_suspend(struct em28xx *dev) { if (dev->is_audio_only) return 0; if (!dev->has_video) return 0; dev_info(&dev->intf->dev, "Suspending video extension\n"); em28xx_stop_urbs(dev); return 0; } static int em28xx_v4l2_resume(struct em28xx *dev) { if (dev->is_audio_only) return 0; if (!dev->has_video) return 0; dev_info(&dev->intf->dev, "Resuming video extension\n"); /* what do we do here */ return 0; } /* * em28xx_v4l2_close() * stops streaming and deallocates all resources allocated by the v4l2 * calls and ioctls */ static int em28xx_v4l2_close(struct file *filp) { struct em28xx *dev = video_drvdata(filp); struct em28xx_v4l2 *v4l2 = dev->v4l2; struct usb_device *udev = interface_to_usbdev(dev->intf); int err; em28xx_videodbg("users=%d\n", v4l2->users); vb2_fop_release(filp); mutex_lock(&dev->lock); if (v4l2->users == 1) { /* No sense to try to write to the device */ if (dev->disconnected) goto exit; /* Save some power by putting tuner to sleep */ v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, standby); /* do this before setting alternate! */ em28xx_set_mode(dev, EM28XX_SUSPEND); /* set alternate 0 */ dev->alt = 0; em28xx_videodbg("setting alternate 0\n"); err = usb_set_interface(udev, 0, 0); if (err < 0) { dev_err(&dev->intf->dev, "cannot change alternate number to 0 (error=%i)\n", err); } } exit: v4l2->users--; kref_put(&v4l2->ref, em28xx_free_v4l2); mutex_unlock(&dev->lock); kref_put(&dev->ref, em28xx_free_device); return 0; } static const struct v4l2_file_operations em28xx_v4l_fops = { .owner = THIS_MODULE, .open = em28xx_v4l2_open, .release = em28xx_v4l2_close, .read = vb2_fop_read, .poll = vb2_fop_poll, .mmap = vb2_fop_mmap, .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops video_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, .vidioc_g_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, .vidioc_try_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, .vidioc_s_fmt_vbi_cap = vidioc_g_fmt_vbi_cap, .vidioc_enum_framesizes = vidioc_enum_framesizes, .vidioc_enumaudio = vidioc_enumaudio, .vidioc_g_audio = vidioc_g_audio, .vidioc_s_audio = vidioc_s_audio, .vidioc_reqbufs = vb2_ioctl_reqbufs, .vidioc_create_bufs = vb2_ioctl_create_bufs, .vidioc_prepare_buf = vb2_ioctl_prepare_buf, .vidioc_querybuf = vb2_ioctl_querybuf, .vidioc_qbuf = vb2_ioctl_qbuf, .vidioc_dqbuf = vb2_ioctl_dqbuf, .vidioc_g_std = vidioc_g_std, .vidioc_querystd = vidioc_querystd, .vidioc_s_std = vidioc_s_std, .vidioc_g_parm = vidioc_g_parm, .vidioc_s_parm = vidioc_s_parm, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, .vidioc_s_input = vidioc_s_input, .vidioc_streamon = vb2_ioctl_streamon, .vidioc_streamoff = vb2_ioctl_streamoff, .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_chip_info = vidioc_g_chip_info, .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, #endif }; static const struct video_device em28xx_video_template = { .fops = &em28xx_v4l_fops, .ioctl_ops = &video_ioctl_ops, .release = video_device_release_empty, .tvnorms = V4L2_STD_ALL, }; static const struct v4l2_file_operations radio_fops = { .owner = THIS_MODULE, .open = em28xx_v4l2_open, .release = em28xx_v4l2_close, .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops radio_ioctl_ops = { .vidioc_querycap = vidioc_querycap, .vidioc_g_tuner = radio_g_tuner, .vidioc_s_tuner = radio_s_tuner, .vidioc_g_frequency = vidioc_g_frequency, .vidioc_s_frequency = vidioc_s_frequency, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, #ifdef CONFIG_VIDEO_ADV_DEBUG .vidioc_g_chip_info = vidioc_g_chip_info, .vidioc_g_register = vidioc_g_register, .vidioc_s_register = vidioc_s_register, #endif }; static struct video_device em28xx_radio_template = { .fops = &radio_fops, .ioctl_ops = &radio_ioctl_ops, .release = video_device_release_empty, }; /* I2C possible address to saa7115, tvp5150, msp3400, tvaudio */ static unsigned short saa711x_addrs[] = { 0x4a >> 1, 0x48 >> 1, /* SAA7111, SAA7111A and SAA7113 */ 0x42 >> 1, 0x40 >> 1, /* SAA7114, SAA7115 and SAA7118 */ I2C_CLIENT_END }; static unsigned short tvp5150_addrs[] = { 0xb8 >> 1, 0xba >> 1, I2C_CLIENT_END }; static unsigned short msp3400_addrs[] = { 0x80 >> 1, 0x88 >> 1, I2C_CLIENT_END }; /******************************** usb interface ******************************/ static void em28xx_vdev_init(struct em28xx *dev, struct video_device *vfd, const struct video_device *template, const char *type_name) { *vfd = *template; vfd->v4l2_dev = &dev->v4l2->v4l2_dev; vfd->lock = &dev->lock; if (dev->is_webcam) vfd->tvnorms = 0; snprintf(vfd->name, sizeof(vfd->name), "%s %s", dev_name(&dev->intf->dev), type_name); video_set_drvdata(vfd, dev); } static void em28xx_tuner_setup(struct em28xx *dev, unsigned short tuner_addr) { struct em28xx_v4l2 *v4l2 = dev->v4l2; struct v4l2_device *v4l2_dev = &v4l2->v4l2_dev; struct tuner_setup tun_setup; struct v4l2_frequency f; memset(&tun_setup, 0, sizeof(tun_setup)); tun_setup.mode_mask = T_ANALOG_TV | T_RADIO; tun_setup.tuner_callback = em28xx_tuner_callback; if (dev->board.radio.type) { tun_setup.type = dev->board.radio.type; tun_setup.addr = dev->board.radio_addr; v4l2_device_call_all(v4l2_dev, 0, tuner, s_type_addr, &tun_setup); } if (dev->tuner_type != TUNER_ABSENT && dev->tuner_type) { tun_setup.type = dev->tuner_type; tun_setup.addr = tuner_addr; v4l2_device_call_all(v4l2_dev, 0, tuner, s_type_addr, &tun_setup); } if (dev->board.tda9887_conf) { struct v4l2_priv_tun_config tda9887_cfg; tda9887_cfg.tuner = TUNER_TDA9887; tda9887_cfg.priv = &dev->board.tda9887_conf; v4l2_device_call_all(v4l2_dev, 0, tuner, s_config, &tda9887_cfg); } if (dev->tuner_type == TUNER_XC2028) { struct v4l2_priv_tun_config xc2028_cfg; struct xc2028_ctrl ctl; memset(&xc2028_cfg, 0, sizeof(xc2028_cfg)); memset(&ctl, 0, sizeof(ctl)); em28xx_setup_xc3028(dev, &ctl); xc2028_cfg.tuner = TUNER_XC2028; xc2028_cfg.priv = &ctl; v4l2_device_call_all(v4l2_dev, 0, tuner, s_config, &xc2028_cfg); } /* configure tuner */ f.tuner = 0; f.type = V4L2_TUNER_ANALOG_TV; f.frequency = 9076; /* just a magic number */ v4l2->frequency = f.frequency; v4l2_device_call_all(v4l2_dev, 0, tuner, s_frequency, &f); } static int em28xx_v4l2_init(struct em28xx *dev) { u8 val; int ret; unsigned int maxw; struct v4l2_ctrl_handler *hdl; struct em28xx_v4l2 *v4l2; if (dev->is_audio_only) { /* Shouldn't initialize IR for this interface */ return 0; } if (!dev->has_video) { /* This device does not support the v4l2 extension */ return 0; } dev_info(&dev->intf->dev, "Registering V4L2 extension\n"); mutex_lock(&dev->lock); v4l2 = kzalloc(sizeof(*v4l2), GFP_KERNEL); if (!v4l2) { mutex_unlock(&dev->lock); return -ENOMEM; } kref_init(&v4l2->ref); v4l2->dev = dev; dev->v4l2 = v4l2; #ifdef CONFIG_MEDIA_CONTROLLER v4l2->v4l2_dev.mdev = dev->media_dev; #endif ret = v4l2_device_register(&dev->intf->dev, &v4l2->v4l2_dev); if (ret < 0) { dev_err(&dev->intf->dev, "Call to v4l2_device_register() failed!\n"); goto err; } hdl = &v4l2->ctrl_handler; v4l2_ctrl_handler_init(hdl, 8); v4l2->v4l2_dev.ctrl_handler = hdl; if (dev->is_webcam) v4l2->progressive = true; /* * Default format, used for tvp5150 or saa711x output formats */ v4l2->vinmode = EM28XX_VINMODE_YUV422_CbYCrY; v4l2->vinctl = EM28XX_VINCTRL_INTERLACED | EM28XX_VINCTRL_CCIR656_ENABLE; /* request some modules */ if (dev->has_msp34xx) v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "msp3400", 0, msp3400_addrs); if (dev->board.decoder == EM28XX_SAA711X) v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "saa7115_auto", 0, saa711x_addrs); if (dev->board.decoder == EM28XX_TVP5150) v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "tvp5150", 0, tvp5150_addrs); if (dev->board.adecoder == EM28XX_TVAUDIO) v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "tvaudio", dev->board.tvaudio_addr, NULL); /* Initialize tuner and camera */ if (dev->board.tuner_type != TUNER_ABSENT) { unsigned short tuner_addr = dev->board.tuner_addr; int has_demod = (dev->board.tda9887_conf & TDA9887_PRESENT); if (dev->board.radio.type) v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "tuner", dev->board.radio_addr, NULL); if (has_demod) v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "tuner", 0, v4l2_i2c_tuner_addrs(ADDRS_DEMOD)); if (tuner_addr == 0) { enum v4l2_i2c_tuner_type type = has_demod ? ADDRS_TV_WITH_DEMOD : ADDRS_TV; struct v4l2_subdev *sd; sd = v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "tuner", 0, v4l2_i2c_tuner_addrs(type)); if (sd) tuner_addr = v4l2_i2c_subdev_addr(sd); } else { v4l2_i2c_new_subdev(&v4l2->v4l2_dev, &dev->i2c_adap[dev->def_i2c_bus], "tuner", tuner_addr, NULL); } em28xx_tuner_setup(dev, tuner_addr); } if (dev->em28xx_sensor != EM28XX_NOSENSOR) em28xx_init_camera(dev); /* Configure audio */ ret = em28xx_audio_setup(dev); if (ret < 0) { dev_err(&dev->intf->dev, "%s: Error while setting audio - error [%d]!\n", __func__, ret); goto unregister_dev; } if (dev->audio_mode.ac97 != EM28XX_NO_AC97) { v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 0x1f, 1, 0x1f); } else { /* install the em28xx notify callback */ v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_MUTE), em28xx_ctrl_notify, dev); v4l2_ctrl_notify(v4l2_ctrl_find(hdl, V4L2_CID_AUDIO_VOLUME), em28xx_ctrl_notify, dev); } /* wake i2c devices */ em28xx_wake_i2c(dev); /* init video dma queues */ INIT_LIST_HEAD(&dev->vidq.active); INIT_LIST_HEAD(&dev->vbiq.active); if (dev->has_msp34xx) { /* Send a reset to other chips via gpio */ ret = em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xf7); if (ret < 0) { dev_err(&dev->intf->dev, "%s: em28xx_write_reg - msp34xx(1) failed! error [%d]\n", __func__, ret); goto unregister_dev; } usleep_range(10000, 11000); ret = em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xff); if (ret < 0) { dev_err(&dev->intf->dev, "%s: em28xx_write_reg - msp34xx(2) failed! error [%d]\n", __func__, ret); goto unregister_dev; } usleep_range(10000, 11000); } /* set default norm */ v4l2->norm = V4L2_STD_PAL; v4l2_device_call_all(&v4l2->v4l2_dev, 0, video, s_std, v4l2->norm); v4l2->interlaced_fieldmode = EM28XX_INTERLACED_DEFAULT; /* Analog specific initialization */ v4l2->format = &format[0]; maxw = norm_maxw(dev); /* * MaxPacketSize for em2800 is too small to capture at full resolution * use half of maxw as the scaler can only scale to 50% */ if (dev->board.is_em2800) maxw /= 2; em28xx_set_video_format(dev, format[0].fourcc, maxw, norm_maxh(dev)); video_mux(dev, 0); /* Audio defaults */ dev->mute = 1; dev->volume = 0x1f; /* em28xx_write_reg(dev, EM28XX_R0E_AUDIOSRC, 0xc0); audio register */ val = (u8)em28xx_read_reg(dev, EM28XX_R0F_XCLK); em28xx_write_reg(dev, EM28XX_R0F_XCLK, (EM28XX_XCLK_AUDIO_UNMUTE | val)); em28xx_set_outfmt(dev); /* Add image controls */ /* * NOTE: at this point, the subdevices are already registered, so * bridge controls are only added/enabled when no subdevice provides * them */ if (!v4l2_ctrl_find(hdl, V4L2_CID_CONTRAST)) v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_CONTRAST, 0, 0x1f, 1, CONTRAST_DEFAULT); if (!v4l2_ctrl_find(hdl, V4L2_CID_BRIGHTNESS)) v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_BRIGHTNESS, -0x80, 0x7f, 1, BRIGHTNESS_DEFAULT); if (!v4l2_ctrl_find(hdl, V4L2_CID_SATURATION)) v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_SATURATION, 0, 0x1f, 1, SATURATION_DEFAULT); if (!v4l2_ctrl_find(hdl, V4L2_CID_BLUE_BALANCE)) v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_BLUE_BALANCE, -0x30, 0x30, 1, BLUE_BALANCE_DEFAULT); if (!v4l2_ctrl_find(hdl, V4L2_CID_RED_BALANCE)) v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_RED_BALANCE, -0x30, 0x30, 1, RED_BALANCE_DEFAULT); if (!v4l2_ctrl_find(hdl, V4L2_CID_SHARPNESS)) v4l2_ctrl_new_std(hdl, &em28xx_ctrl_ops, V4L2_CID_SHARPNESS, 0, 0x0f, 1, SHARPNESS_DEFAULT); /* Reset image controls */ em28xx_colorlevels_set_default(dev); v4l2_ctrl_handler_setup(hdl); ret = hdl->error; if (ret) goto unregister_dev; /* allocate and fill video video_device struct */ em28xx_vdev_init(dev, &v4l2->vdev, &em28xx_video_template, "video"); mutex_init(&v4l2->vb_queue_lock); mutex_init(&v4l2->vb_vbi_queue_lock); v4l2->vdev.queue = &v4l2->vb_vidq; v4l2->vdev.queue->lock = &v4l2->vb_queue_lock; /* disable inapplicable ioctls */ if (dev->is_webcam) { v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_QUERYSTD); v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_STD); v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_STD); } else { v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_PARM); } if (dev->tuner_type == TUNER_ABSENT) { v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_TUNER); v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_TUNER); v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_FREQUENCY); v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_FREQUENCY); } if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) { v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_G_AUDIO); v4l2_disable_ioctl(&v4l2->vdev, VIDIOC_S_AUDIO); } /* register v4l2 video video_device */ ret = video_register_device(&v4l2->vdev, VFL_TYPE_GRABBER, video_nr[dev->devno]); if (ret) { dev_err(&dev->intf->dev, "unable to register video device (error=%i).\n", ret); goto unregister_dev; } /* Allocate and fill vbi video_device struct */ if (em28xx_vbi_supported(dev) == 1) { em28xx_vdev_init(dev, &v4l2->vbi_dev, &em28xx_video_template, "vbi"); v4l2->vbi_dev.queue = &v4l2->vb_vbiq; v4l2->vbi_dev.queue->lock = &v4l2->vb_vbi_queue_lock; /* disable inapplicable ioctls */ v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_PARM); if (dev->tuner_type == TUNER_ABSENT) { v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_TUNER); v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_TUNER); v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_FREQUENCY); v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_FREQUENCY); } if (dev->int_audio_type == EM28XX_INT_AUDIO_NONE) { v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_G_AUDIO); v4l2_disable_ioctl(&v4l2->vbi_dev, VIDIOC_S_AUDIO); } /* register v4l2 vbi video_device */ ret = video_register_device(&v4l2->vbi_dev, VFL_TYPE_VBI, vbi_nr[dev->devno]); if (ret < 0) { dev_err(&dev->intf->dev, "unable to register vbi device\n"); goto unregister_dev; } } if (em28xx_boards[dev->model].radio.type == EM28XX_RADIO) { em28xx_vdev_init(dev, &v4l2->radio_dev, &em28xx_radio_template, "radio"); ret = video_register_device(&v4l2->radio_dev, VFL_TYPE_RADIO, radio_nr[dev->devno]); if (ret < 0) { dev_err(&dev->intf->dev, "can't register radio device\n"); goto unregister_dev; } dev_info(&dev->intf->dev, "Registered radio device as %s\n", video_device_node_name(&v4l2->radio_dev)); } /* Init entities at the Media Controller */ em28xx_v4l2_create_entities(dev); #ifdef CONFIG_MEDIA_CONTROLLER ret = v4l2_mc_create_media_graph(dev->media_dev); if (ret) { dev_err(&dev->intf->dev, "failed to create media graph\n"); em28xx_v4l2_media_release(dev); goto unregister_dev; } #endif dev_info(&dev->intf->dev, "V4L2 video device registered as %s\n", video_device_node_name(&v4l2->vdev)); if (video_is_registered(&v4l2->vbi_dev)) dev_info(&dev->intf->dev, "V4L2 VBI device registered as %s\n", video_device_node_name(&v4l2->vbi_dev)); /* Save some power by putting tuner to sleep */ v4l2_device_call_all(&v4l2->v4l2_dev, 0, tuner, standby); /* initialize videobuf2 stuff */ em28xx_vb2_setup(dev); dev_info(&dev->intf->dev, "V4L2 extension successfully initialized\n"); kref_get(&dev->ref); mutex_unlock(&dev->lock); return 0; unregister_dev: if (video_is_registered(&v4l2->radio_dev)) { dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n", video_device_node_name(&v4l2->radio_dev)); video_unregister_device(&v4l2->radio_dev); } if (video_is_registered(&v4l2->vbi_dev)) { dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n", video_device_node_name(&v4l2->vbi_dev)); video_unregister_device(&v4l2->vbi_dev); } if (video_is_registered(&v4l2->vdev)) { dev_info(&dev->intf->dev, "V4L2 device %s deregistered\n", video_device_node_name(&v4l2->vdev)); video_unregister_device(&v4l2->vdev); } v4l2_ctrl_handler_free(&v4l2->ctrl_handler); v4l2_device_unregister(&v4l2->v4l2_dev); err: dev->v4l2 = NULL; kref_put(&v4l2->ref, em28xx_free_v4l2); mutex_unlock(&dev->lock); return ret; } static struct em28xx_ops v4l2_ops = { .id = EM28XX_V4L2, .name = "Em28xx v4l2 Extension", .init = em28xx_v4l2_init, .fini = em28xx_v4l2_fini, .suspend = em28xx_v4l2_suspend, .resume = em28xx_v4l2_resume, }; static int __init em28xx_video_register(void) { return em28xx_register_extension(&v4l2_ops); } static void __exit em28xx_video_unregister(void) { em28xx_unregister_extension(&v4l2_ops); } module_init(em28xx_video_register); module_exit(em28xx_video_unregister);
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