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973 lines
26 KiB
973 lines
26 KiB
/* |
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* Copyright (c) 2013,2016 Lubomir Rintel |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions, and the following disclaimer, |
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* without modification. |
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* 2. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* Alternatively, this software may be distributed under the terms of the |
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* GNU General Public License ("GPL"). |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* Fushicai USBTV007 Audio-Video Grabber Driver |
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* |
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* Product web site: |
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* http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html |
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* |
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* Following LWN articles were very useful in construction of this driver: |
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* Video4Linux2 API series: http://lwn.net/Articles/203924/ |
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* videobuf2 API explanation: http://lwn.net/Articles/447435/ |
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* Thanks go to Jonathan Corbet for providing this quality documentation. |
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* He is awesome. |
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* |
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* No physical hardware was harmed running Windows during the |
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* reverse-engineering activity |
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*/ |
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|
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#include <media/v4l2-ioctl.h> |
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#include <media/videobuf2-v4l2.h> |
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|
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#include "usbtv.h" |
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|
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static struct usbtv_norm_params norm_params[] = { |
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{ |
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.norm = V4L2_STD_525_60, |
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.cap_width = 720, |
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.cap_height = 480, |
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}, |
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{ |
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.norm = V4L2_STD_625_50, |
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.cap_width = 720, |
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.cap_height = 576, |
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} |
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}; |
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|
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static int usbtv_configure_for_norm(struct usbtv *usbtv, v4l2_std_id norm) |
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{ |
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int i, ret = 0; |
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struct usbtv_norm_params *params = NULL; |
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|
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for (i = 0; i < ARRAY_SIZE(norm_params); i++) { |
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if (norm_params[i].norm & norm) { |
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params = &norm_params[i]; |
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break; |
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} |
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} |
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|
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if (params) { |
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usbtv->width = params->cap_width; |
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usbtv->height = params->cap_height; |
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usbtv->n_chunks = usbtv->width * usbtv->height |
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/ 4 / USBTV_CHUNK; |
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usbtv->norm = norm; |
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} else |
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ret = -EINVAL; |
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|
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return ret; |
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} |
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|
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static int usbtv_select_input(struct usbtv *usbtv, int input) |
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{ |
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int ret; |
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|
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static const u16 composite[][2] = { |
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{ USBTV_BASE + 0x0105, 0x0060 }, |
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{ USBTV_BASE + 0x011f, 0x00f2 }, |
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{ USBTV_BASE + 0x0127, 0x0060 }, |
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{ USBTV_BASE + 0x00ae, 0x0010 }, |
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{ USBTV_BASE + 0x0239, 0x0060 }, |
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}; |
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|
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static const u16 svideo[][2] = { |
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{ USBTV_BASE + 0x0105, 0x0010 }, |
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{ USBTV_BASE + 0x011f, 0x00ff }, |
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{ USBTV_BASE + 0x0127, 0x0060 }, |
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{ USBTV_BASE + 0x00ae, 0x0030 }, |
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{ USBTV_BASE + 0x0239, 0x0060 }, |
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}; |
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|
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switch (input) { |
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case USBTV_COMPOSITE_INPUT: |
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ret = usbtv_set_regs(usbtv, composite, ARRAY_SIZE(composite)); |
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break; |
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case USBTV_SVIDEO_INPUT: |
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ret = usbtv_set_regs(usbtv, svideo, ARRAY_SIZE(svideo)); |
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break; |
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default: |
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ret = -EINVAL; |
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} |
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|
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if (!ret) |
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usbtv->input = input; |
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|
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return ret; |
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} |
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|
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static uint16_t usbtv_norm_to_16f_reg(v4l2_std_id norm) |
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{ |
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/* NTSC M/M-JP/M-KR */ |
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if (norm & V4L2_STD_NTSC) |
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return 0x00b8; |
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/* PAL BG/DK/H/I */ |
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if (norm & V4L2_STD_PAL) |
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return 0x00ee; |
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/* SECAM B/D/G/H/K/K1/L/Lc */ |
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if (norm & V4L2_STD_SECAM) |
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return 0x00ff; |
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if (norm & V4L2_STD_NTSC_443) |
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return 0x00a8; |
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if (norm & (V4L2_STD_PAL_M | V4L2_STD_PAL_60)) |
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return 0x00bc; |
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/* Fallback to automatic detection for other standards */ |
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return 0x0000; |
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} |
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|
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static int usbtv_select_norm(struct usbtv *usbtv, v4l2_std_id norm) |
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{ |
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int ret; |
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/* These are the series of register values used to configure the |
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* decoder for a specific standard. |
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* The first 21 register writes are copied from the |
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* Settings\DecoderDefaults registry keys present in the Windows driver |
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* .INF file, and control various image tuning parameters (color |
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* correction, sharpness, ...). |
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*/ |
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static const u16 pal[][2] = { |
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/* "AVPAL" tuning sequence from .INF file */ |
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{ USBTV_BASE + 0x0003, 0x0004 }, |
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{ USBTV_BASE + 0x001a, 0x0068 }, |
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{ USBTV_BASE + 0x0100, 0x00d3 }, |
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{ USBTV_BASE + 0x010e, 0x0072 }, |
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{ USBTV_BASE + 0x010f, 0x00a2 }, |
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{ USBTV_BASE + 0x0112, 0x00b0 }, |
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{ USBTV_BASE + 0x0115, 0x0015 }, |
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{ USBTV_BASE + 0x0117, 0x0001 }, |
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{ USBTV_BASE + 0x0118, 0x002c }, |
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{ USBTV_BASE + 0x012d, 0x0010 }, |
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{ USBTV_BASE + 0x012f, 0x0020 }, |
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{ USBTV_BASE + 0x0220, 0x002e }, |
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{ USBTV_BASE + 0x0225, 0x0008 }, |
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{ USBTV_BASE + 0x024e, 0x0002 }, |
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{ USBTV_BASE + 0x024f, 0x0002 }, |
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{ USBTV_BASE + 0x0254, 0x0059 }, |
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{ USBTV_BASE + 0x025a, 0x0016 }, |
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{ USBTV_BASE + 0x025b, 0x0035 }, |
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{ USBTV_BASE + 0x0263, 0x0017 }, |
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{ USBTV_BASE + 0x0266, 0x0016 }, |
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{ USBTV_BASE + 0x0267, 0x0036 }, |
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/* End image tuning */ |
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{ USBTV_BASE + 0x024e, 0x0002 }, |
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{ USBTV_BASE + 0x024f, 0x0002 }, |
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}; |
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|
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static const u16 ntsc[][2] = { |
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/* "AVNTSC" tuning sequence from .INF file */ |
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{ USBTV_BASE + 0x0003, 0x0004 }, |
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{ USBTV_BASE + 0x001a, 0x0079 }, |
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{ USBTV_BASE + 0x0100, 0x00d3 }, |
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{ USBTV_BASE + 0x010e, 0x0068 }, |
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{ USBTV_BASE + 0x010f, 0x009c }, |
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{ USBTV_BASE + 0x0112, 0x00f0 }, |
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{ USBTV_BASE + 0x0115, 0x0015 }, |
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{ USBTV_BASE + 0x0117, 0x0000 }, |
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{ USBTV_BASE + 0x0118, 0x00fc }, |
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{ USBTV_BASE + 0x012d, 0x0004 }, |
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{ USBTV_BASE + 0x012f, 0x0008 }, |
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{ USBTV_BASE + 0x0220, 0x002e }, |
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{ USBTV_BASE + 0x0225, 0x0008 }, |
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{ USBTV_BASE + 0x024e, 0x0002 }, |
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{ USBTV_BASE + 0x024f, 0x0001 }, |
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{ USBTV_BASE + 0x0254, 0x005f }, |
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{ USBTV_BASE + 0x025a, 0x0012 }, |
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{ USBTV_BASE + 0x025b, 0x0001 }, |
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{ USBTV_BASE + 0x0263, 0x001c }, |
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{ USBTV_BASE + 0x0266, 0x0011 }, |
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{ USBTV_BASE + 0x0267, 0x0005 }, |
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/* End image tuning */ |
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{ USBTV_BASE + 0x024e, 0x0002 }, |
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{ USBTV_BASE + 0x024f, 0x0002 }, |
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}; |
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|
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static const u16 secam[][2] = { |
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/* "AVSECAM" tuning sequence from .INF file */ |
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{ USBTV_BASE + 0x0003, 0x0004 }, |
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{ USBTV_BASE + 0x001a, 0x0073 }, |
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{ USBTV_BASE + 0x0100, 0x00dc }, |
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{ USBTV_BASE + 0x010e, 0x0072 }, |
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{ USBTV_BASE + 0x010f, 0x00a2 }, |
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{ USBTV_BASE + 0x0112, 0x0090 }, |
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{ USBTV_BASE + 0x0115, 0x0035 }, |
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{ USBTV_BASE + 0x0117, 0x0001 }, |
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{ USBTV_BASE + 0x0118, 0x0030 }, |
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{ USBTV_BASE + 0x012d, 0x0004 }, |
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{ USBTV_BASE + 0x012f, 0x0008 }, |
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{ USBTV_BASE + 0x0220, 0x002d }, |
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{ USBTV_BASE + 0x0225, 0x0028 }, |
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{ USBTV_BASE + 0x024e, 0x0008 }, |
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{ USBTV_BASE + 0x024f, 0x0002 }, |
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{ USBTV_BASE + 0x0254, 0x0069 }, |
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{ USBTV_BASE + 0x025a, 0x0016 }, |
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{ USBTV_BASE + 0x025b, 0x0035 }, |
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{ USBTV_BASE + 0x0263, 0x0021 }, |
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{ USBTV_BASE + 0x0266, 0x0016 }, |
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{ USBTV_BASE + 0x0267, 0x0036 }, |
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/* End image tuning */ |
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{ USBTV_BASE + 0x024e, 0x0002 }, |
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{ USBTV_BASE + 0x024f, 0x0002 }, |
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}; |
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|
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ret = usbtv_configure_for_norm(usbtv, norm); |
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|
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if (!ret) { |
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/* Masks for norms using a NTSC or PAL color encoding. */ |
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static const v4l2_std_id ntsc_mask = |
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V4L2_STD_NTSC | V4L2_STD_NTSC_443; |
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static const v4l2_std_id pal_mask = |
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V4L2_STD_PAL | V4L2_STD_PAL_60 | V4L2_STD_PAL_M; |
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|
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if (norm & ntsc_mask) |
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ret = usbtv_set_regs(usbtv, ntsc, ARRAY_SIZE(ntsc)); |
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else if (norm & pal_mask) |
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ret = usbtv_set_regs(usbtv, pal, ARRAY_SIZE(pal)); |
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else if (norm & V4L2_STD_SECAM) |
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ret = usbtv_set_regs(usbtv, secam, ARRAY_SIZE(secam)); |
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else |
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ret = -EINVAL; |
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} |
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|
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if (!ret) { |
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/* Configure the decoder for the color standard */ |
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const u16 cfg[][2] = { |
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{ USBTV_BASE + 0x016f, usbtv_norm_to_16f_reg(norm) } |
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}; |
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ret = usbtv_set_regs(usbtv, cfg, ARRAY_SIZE(cfg)); |
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} |
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return ret; |
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} |
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static int usbtv_setup_capture(struct usbtv *usbtv) |
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{ |
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int ret; |
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static const u16 setup[][2] = { |
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/* These seem to enable the device. */ |
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{ USBTV_BASE + 0x0008, 0x0001 }, |
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{ USBTV_BASE + 0x01d0, 0x00ff }, |
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{ USBTV_BASE + 0x01d9, 0x0002 }, |
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|
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/* These seem to influence color parameters, such as |
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* brightness, etc. */ |
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{ USBTV_BASE + 0x0239, 0x0040 }, |
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{ USBTV_BASE + 0x0240, 0x0000 }, |
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{ USBTV_BASE + 0x0241, 0x0000 }, |
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{ USBTV_BASE + 0x0242, 0x0002 }, |
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{ USBTV_BASE + 0x0243, 0x0080 }, |
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{ USBTV_BASE + 0x0244, 0x0012 }, |
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{ USBTV_BASE + 0x0245, 0x0090 }, |
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{ USBTV_BASE + 0x0246, 0x0000 }, |
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|
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{ USBTV_BASE + 0x0278, 0x002d }, |
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{ USBTV_BASE + 0x0279, 0x000a }, |
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{ USBTV_BASE + 0x027a, 0x0032 }, |
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{ 0xf890, 0x000c }, |
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{ 0xf894, 0x0086 }, |
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|
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{ USBTV_BASE + 0x00ac, 0x00c0 }, |
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{ USBTV_BASE + 0x00ad, 0x0000 }, |
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{ USBTV_BASE + 0x00a2, 0x0012 }, |
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{ USBTV_BASE + 0x00a3, 0x00e0 }, |
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{ USBTV_BASE + 0x00a4, 0x0028 }, |
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{ USBTV_BASE + 0x00a5, 0x0082 }, |
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{ USBTV_BASE + 0x00a7, 0x0080 }, |
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{ USBTV_BASE + 0x0000, 0x0014 }, |
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{ USBTV_BASE + 0x0006, 0x0003 }, |
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{ USBTV_BASE + 0x0090, 0x0099 }, |
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{ USBTV_BASE + 0x0091, 0x0090 }, |
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{ USBTV_BASE + 0x0094, 0x0068 }, |
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{ USBTV_BASE + 0x0095, 0x0070 }, |
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{ USBTV_BASE + 0x009c, 0x0030 }, |
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{ USBTV_BASE + 0x009d, 0x00c0 }, |
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{ USBTV_BASE + 0x009e, 0x00e0 }, |
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{ USBTV_BASE + 0x0019, 0x0006 }, |
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{ USBTV_BASE + 0x008c, 0x00ba }, |
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{ USBTV_BASE + 0x0101, 0x00ff }, |
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{ USBTV_BASE + 0x010c, 0x00b3 }, |
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{ USBTV_BASE + 0x01b2, 0x0080 }, |
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{ USBTV_BASE + 0x01b4, 0x00a0 }, |
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{ USBTV_BASE + 0x014c, 0x00ff }, |
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{ USBTV_BASE + 0x014d, 0x00ca }, |
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{ USBTV_BASE + 0x0113, 0x0053 }, |
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{ USBTV_BASE + 0x0119, 0x008a }, |
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{ USBTV_BASE + 0x013c, 0x0003 }, |
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{ USBTV_BASE + 0x0150, 0x009c }, |
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{ USBTV_BASE + 0x0151, 0x0071 }, |
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{ USBTV_BASE + 0x0152, 0x00c6 }, |
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{ USBTV_BASE + 0x0153, 0x0084 }, |
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{ USBTV_BASE + 0x0154, 0x00bc }, |
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{ USBTV_BASE + 0x0155, 0x00a0 }, |
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{ USBTV_BASE + 0x0156, 0x00a0 }, |
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{ USBTV_BASE + 0x0157, 0x009c }, |
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{ USBTV_BASE + 0x0158, 0x001f }, |
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{ USBTV_BASE + 0x0159, 0x0006 }, |
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{ USBTV_BASE + 0x015d, 0x0000 }, |
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}; |
|
|
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ret = usbtv_set_regs(usbtv, setup, ARRAY_SIZE(setup)); |
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if (ret) |
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return ret; |
|
|
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ret = usbtv_select_norm(usbtv, usbtv->norm); |
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if (ret) |
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return ret; |
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|
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ret = usbtv_select_input(usbtv, usbtv->input); |
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if (ret) |
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return ret; |
|
|
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ret = v4l2_ctrl_handler_setup(&usbtv->ctrl); |
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if (ret) |
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return ret; |
|
|
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return 0; |
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} |
|
|
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/* Copy data from chunk into a frame buffer, deinterlacing the data |
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* into every second line. Unfortunately, they don't align nicely into |
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* 720 pixel lines, as the chunk is 240 words long, which is 480 pixels. |
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* Therefore, we break down the chunk into two halves before copying, |
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* so that we can interleave a line if needed. |
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* |
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* Each "chunk" is 240 words; a word in this context equals 4 bytes. |
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* Image format is YUYV/YUV 4:2:2, consisting of Y Cr Y Cb, defining two |
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* pixels, the Cr and Cb shared between the two pixels, but each having |
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* separate Y values. Thus, the 240 words equal 480 pixels. It therefore, |
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* takes 1.5 chunks to make a 720 pixel-wide line for the frame. |
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* The image is interlaced, so there is a "scan" of odd lines, followed |
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* by "scan" of even numbered lines. |
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* |
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* Following code is writing the chunks in correct sequence, skipping |
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* the rows based on "odd" value. |
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* line 1: chunk[0][ 0..479] chunk[0][480..959] chunk[1][ 0..479] |
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* line 3: chunk[1][480..959] chunk[2][ 0..479] chunk[2][480..959] |
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* ...etc. |
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*/ |
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static void usbtv_chunk_to_vbuf(u32 *frame, __be32 *src, int chunk_no, int odd) |
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{ |
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int half; |
|
|
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for (half = 0; half < 2; half++) { |
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int part_no = chunk_no * 2 + half; |
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int line = part_no / 3; |
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int part_index = (line * 2 + !odd) * 3 + (part_no % 3); |
|
|
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u32 *dst = &frame[part_index * USBTV_CHUNK/2]; |
|
|
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memcpy(dst, src, USBTV_CHUNK/2 * sizeof(*src)); |
|
src += USBTV_CHUNK/2; |
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} |
|
} |
|
|
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/* Called for each 256-byte image chunk. |
|
* First word identifies the chunk, followed by 240 words of image |
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* data and padding. */ |
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static void usbtv_image_chunk(struct usbtv *usbtv, __be32 *chunk) |
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{ |
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int frame_id, odd, chunk_no; |
|
u32 *frame; |
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struct usbtv_buf *buf; |
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unsigned long flags; |
|
|
|
/* Ignore corrupted lines. */ |
|
if (!USBTV_MAGIC_OK(chunk)) |
|
return; |
|
frame_id = USBTV_FRAME_ID(chunk); |
|
odd = USBTV_ODD(chunk); |
|
chunk_no = USBTV_CHUNK_NO(chunk); |
|
if (chunk_no >= usbtv->n_chunks) |
|
return; |
|
|
|
/* Beginning of a frame. */ |
|
if (chunk_no == 0) { |
|
usbtv->frame_id = frame_id; |
|
usbtv->chunks_done = 0; |
|
} |
|
|
|
if (usbtv->frame_id != frame_id) |
|
return; |
|
|
|
spin_lock_irqsave(&usbtv->buflock, flags); |
|
if (list_empty(&usbtv->bufs)) { |
|
/* No free buffers. Userspace likely too slow. */ |
|
spin_unlock_irqrestore(&usbtv->buflock, flags); |
|
return; |
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} |
|
|
|
/* First available buffer. */ |
|
buf = list_first_entry(&usbtv->bufs, struct usbtv_buf, list); |
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frame = vb2_plane_vaddr(&buf->vb.vb2_buf, 0); |
|
|
|
/* Copy the chunk data. */ |
|
usbtv_chunk_to_vbuf(frame, &chunk[1], chunk_no, odd); |
|
usbtv->chunks_done++; |
|
|
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/* Last chunk in a field */ |
|
if (chunk_no == usbtv->n_chunks-1) { |
|
/* Last chunk in a frame, signalling an end */ |
|
if (odd && !usbtv->last_odd) { |
|
int size = vb2_plane_size(&buf->vb.vb2_buf, 0); |
|
enum vb2_buffer_state state = usbtv->chunks_done == |
|
usbtv->n_chunks ? |
|
VB2_BUF_STATE_DONE : |
|
VB2_BUF_STATE_ERROR; |
|
|
|
buf->vb.field = V4L2_FIELD_INTERLACED; |
|
buf->vb.sequence = usbtv->sequence++; |
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buf->vb.vb2_buf.timestamp = ktime_get_ns(); |
|
vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size); |
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vb2_buffer_done(&buf->vb.vb2_buf, state); |
|
list_del(&buf->list); |
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} |
|
usbtv->last_odd = odd; |
|
} |
|
|
|
spin_unlock_irqrestore(&usbtv->buflock, flags); |
|
} |
|
|
|
/* Got image data. Each packet contains a number of 256-word chunks we |
|
* compose the image from. */ |
|
static void usbtv_iso_cb(struct urb *ip) |
|
{ |
|
int ret; |
|
int i; |
|
struct usbtv *usbtv = (struct usbtv *)ip->context; |
|
|
|
switch (ip->status) { |
|
/* All fine. */ |
|
case 0: |
|
break; |
|
/* Device disconnected or capture stopped? */ |
|
case -ENODEV: |
|
case -ENOENT: |
|
case -ECONNRESET: |
|
case -ESHUTDOWN: |
|
return; |
|
/* Unknown error. Retry. */ |
|
default: |
|
dev_warn(usbtv->dev, "Bad response for ISO request.\n"); |
|
goto resubmit; |
|
} |
|
|
|
for (i = 0; i < ip->number_of_packets; i++) { |
|
int size = ip->iso_frame_desc[i].actual_length; |
|
unsigned char *data = ip->transfer_buffer + |
|
ip->iso_frame_desc[i].offset; |
|
int offset; |
|
|
|
for (offset = 0; USBTV_CHUNK_SIZE * offset < size; offset++) |
|
usbtv_image_chunk(usbtv, |
|
(__be32 *)&data[USBTV_CHUNK_SIZE * offset]); |
|
} |
|
|
|
resubmit: |
|
ret = usb_submit_urb(ip, GFP_ATOMIC); |
|
if (ret < 0) |
|
dev_warn(usbtv->dev, "Could not resubmit ISO URB\n"); |
|
} |
|
|
|
static struct urb *usbtv_setup_iso_transfer(struct usbtv *usbtv) |
|
{ |
|
struct urb *ip; |
|
int size = usbtv->iso_size; |
|
int i; |
|
|
|
ip = usb_alloc_urb(USBTV_ISOC_PACKETS, GFP_KERNEL); |
|
if (ip == NULL) |
|
return NULL; |
|
|
|
ip->dev = usbtv->udev; |
|
ip->context = usbtv; |
|
ip->pipe = usb_rcvisocpipe(usbtv->udev, USBTV_VIDEO_ENDP); |
|
ip->interval = 1; |
|
ip->transfer_flags = URB_ISO_ASAP; |
|
ip->transfer_buffer = kcalloc(USBTV_ISOC_PACKETS, size, |
|
GFP_KERNEL); |
|
if (!ip->transfer_buffer) { |
|
usb_free_urb(ip); |
|
return NULL; |
|
} |
|
ip->complete = usbtv_iso_cb; |
|
ip->number_of_packets = USBTV_ISOC_PACKETS; |
|
ip->transfer_buffer_length = size * USBTV_ISOC_PACKETS; |
|
for (i = 0; i < USBTV_ISOC_PACKETS; i++) { |
|
ip->iso_frame_desc[i].offset = size * i; |
|
ip->iso_frame_desc[i].length = size; |
|
} |
|
|
|
return ip; |
|
} |
|
|
|
static void usbtv_stop(struct usbtv *usbtv) |
|
{ |
|
int i; |
|
unsigned long flags; |
|
|
|
/* Cancel running transfers. */ |
|
for (i = 0; i < USBTV_ISOC_TRANSFERS; i++) { |
|
struct urb *ip = usbtv->isoc_urbs[i]; |
|
|
|
if (ip == NULL) |
|
continue; |
|
usb_kill_urb(ip); |
|
kfree(ip->transfer_buffer); |
|
usb_free_urb(ip); |
|
usbtv->isoc_urbs[i] = NULL; |
|
} |
|
|
|
/* Return buffers to userspace. */ |
|
spin_lock_irqsave(&usbtv->buflock, flags); |
|
while (!list_empty(&usbtv->bufs)) { |
|
struct usbtv_buf *buf = list_first_entry(&usbtv->bufs, |
|
struct usbtv_buf, list); |
|
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
|
list_del(&buf->list); |
|
} |
|
spin_unlock_irqrestore(&usbtv->buflock, flags); |
|
} |
|
|
|
static int usbtv_start(struct usbtv *usbtv) |
|
{ |
|
int i; |
|
int ret; |
|
|
|
usbtv_audio_suspend(usbtv); |
|
|
|
ret = usb_set_interface(usbtv->udev, 0, 0); |
|
if (ret < 0) |
|
return ret; |
|
|
|
ret = usbtv_setup_capture(usbtv); |
|
if (ret < 0) |
|
return ret; |
|
|
|
ret = usb_set_interface(usbtv->udev, 0, 1); |
|
if (ret < 0) |
|
return ret; |
|
|
|
usbtv_audio_resume(usbtv); |
|
|
|
for (i = 0; i < USBTV_ISOC_TRANSFERS; i++) { |
|
struct urb *ip; |
|
|
|
ip = usbtv_setup_iso_transfer(usbtv); |
|
if (ip == NULL) { |
|
ret = -ENOMEM; |
|
goto start_fail; |
|
} |
|
usbtv->isoc_urbs[i] = ip; |
|
|
|
ret = usb_submit_urb(ip, GFP_KERNEL); |
|
if (ret < 0) |
|
goto start_fail; |
|
} |
|
|
|
return 0; |
|
|
|
start_fail: |
|
usbtv_stop(usbtv); |
|
return ret; |
|
} |
|
|
|
static int usbtv_querycap(struct file *file, void *priv, |
|
struct v4l2_capability *cap) |
|
{ |
|
struct usbtv *dev = video_drvdata(file); |
|
|
|
strscpy(cap->driver, "usbtv", sizeof(cap->driver)); |
|
strscpy(cap->card, "usbtv", sizeof(cap->card)); |
|
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info)); |
|
return 0; |
|
} |
|
|
|
static int usbtv_enum_input(struct file *file, void *priv, |
|
struct v4l2_input *i) |
|
{ |
|
struct usbtv *dev = video_drvdata(file); |
|
|
|
switch (i->index) { |
|
case USBTV_COMPOSITE_INPUT: |
|
strscpy(i->name, "Composite", sizeof(i->name)); |
|
break; |
|
case USBTV_SVIDEO_INPUT: |
|
strscpy(i->name, "S-Video", sizeof(i->name)); |
|
break; |
|
default: |
|
return -EINVAL; |
|
} |
|
|
|
i->type = V4L2_INPUT_TYPE_CAMERA; |
|
i->std = dev->vdev.tvnorms; |
|
return 0; |
|
} |
|
|
|
static int usbtv_enum_fmt_vid_cap(struct file *file, void *priv, |
|
struct v4l2_fmtdesc *f) |
|
{ |
|
if (f->index > 0) |
|
return -EINVAL; |
|
|
|
f->pixelformat = V4L2_PIX_FMT_YUYV; |
|
return 0; |
|
} |
|
|
|
static int usbtv_fmt_vid_cap(struct file *file, void *priv, |
|
struct v4l2_format *f) |
|
{ |
|
struct usbtv *usbtv = video_drvdata(file); |
|
|
|
f->fmt.pix.width = usbtv->width; |
|
f->fmt.pix.height = usbtv->height; |
|
f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; |
|
f->fmt.pix.field = V4L2_FIELD_INTERLACED; |
|
f->fmt.pix.bytesperline = usbtv->width * 2; |
|
f->fmt.pix.sizeimage = (f->fmt.pix.bytesperline * f->fmt.pix.height); |
|
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; |
|
|
|
return 0; |
|
} |
|
|
|
static int usbtv_g_std(struct file *file, void *priv, v4l2_std_id *norm) |
|
{ |
|
struct usbtv *usbtv = video_drvdata(file); |
|
*norm = usbtv->norm; |
|
return 0; |
|
} |
|
|
|
static int usbtv_s_std(struct file *file, void *priv, v4l2_std_id norm) |
|
{ |
|
int ret = -EINVAL; |
|
struct usbtv *usbtv = video_drvdata(file); |
|
|
|
if (norm & USBTV_TV_STD) |
|
ret = usbtv_select_norm(usbtv, norm); |
|
|
|
return ret; |
|
} |
|
|
|
static int usbtv_g_input(struct file *file, void *priv, unsigned int *i) |
|
{ |
|
struct usbtv *usbtv = video_drvdata(file); |
|
*i = usbtv->input; |
|
return 0; |
|
} |
|
|
|
static int usbtv_s_input(struct file *file, void *priv, unsigned int i) |
|
{ |
|
struct usbtv *usbtv = video_drvdata(file); |
|
|
|
return usbtv_select_input(usbtv, i); |
|
} |
|
|
|
static struct v4l2_ioctl_ops usbtv_ioctl_ops = { |
|
.vidioc_querycap = usbtv_querycap, |
|
.vidioc_enum_input = usbtv_enum_input, |
|
.vidioc_enum_fmt_vid_cap = usbtv_enum_fmt_vid_cap, |
|
.vidioc_g_fmt_vid_cap = usbtv_fmt_vid_cap, |
|
.vidioc_try_fmt_vid_cap = usbtv_fmt_vid_cap, |
|
.vidioc_s_fmt_vid_cap = usbtv_fmt_vid_cap, |
|
.vidioc_g_std = usbtv_g_std, |
|
.vidioc_s_std = usbtv_s_std, |
|
.vidioc_g_input = usbtv_g_input, |
|
.vidioc_s_input = usbtv_s_input, |
|
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs, |
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
|
.vidioc_querybuf = vb2_ioctl_querybuf, |
|
.vidioc_create_bufs = vb2_ioctl_create_bufs, |
|
.vidioc_qbuf = vb2_ioctl_qbuf, |
|
.vidioc_dqbuf = vb2_ioctl_dqbuf, |
|
.vidioc_streamon = vb2_ioctl_streamon, |
|
.vidioc_streamoff = vb2_ioctl_streamoff, |
|
}; |
|
|
|
static const struct v4l2_file_operations usbtv_fops = { |
|
.owner = THIS_MODULE, |
|
.unlocked_ioctl = video_ioctl2, |
|
.mmap = vb2_fop_mmap, |
|
.open = v4l2_fh_open, |
|
.release = vb2_fop_release, |
|
.read = vb2_fop_read, |
|
.poll = vb2_fop_poll, |
|
}; |
|
|
|
static int usbtv_queue_setup(struct vb2_queue *vq, |
|
unsigned int *nbuffers, |
|
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) |
|
{ |
|
struct usbtv *usbtv = vb2_get_drv_priv(vq); |
|
unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32); |
|
|
|
if (vq->num_buffers + *nbuffers < 2) |
|
*nbuffers = 2 - vq->num_buffers; |
|
if (*nplanes) |
|
return sizes[0] < size ? -EINVAL : 0; |
|
*nplanes = 1; |
|
sizes[0] = size; |
|
|
|
return 0; |
|
} |
|
|
|
static void usbtv_buf_queue(struct vb2_buffer *vb) |
|
{ |
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
|
struct usbtv *usbtv = vb2_get_drv_priv(vb->vb2_queue); |
|
struct usbtv_buf *buf = container_of(vbuf, struct usbtv_buf, vb); |
|
unsigned long flags; |
|
|
|
if (usbtv->udev == NULL) { |
|
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
|
return; |
|
} |
|
|
|
spin_lock_irqsave(&usbtv->buflock, flags); |
|
list_add_tail(&buf->list, &usbtv->bufs); |
|
spin_unlock_irqrestore(&usbtv->buflock, flags); |
|
} |
|
|
|
static int usbtv_start_streaming(struct vb2_queue *vq, unsigned int count) |
|
{ |
|
struct usbtv *usbtv = vb2_get_drv_priv(vq); |
|
|
|
if (usbtv->udev == NULL) |
|
return -ENODEV; |
|
|
|
usbtv->last_odd = 1; |
|
usbtv->sequence = 0; |
|
return usbtv_start(usbtv); |
|
} |
|
|
|
static void usbtv_stop_streaming(struct vb2_queue *vq) |
|
{ |
|
struct usbtv *usbtv = vb2_get_drv_priv(vq); |
|
|
|
if (usbtv->udev) |
|
usbtv_stop(usbtv); |
|
} |
|
|
|
static const struct vb2_ops usbtv_vb2_ops = { |
|
.queue_setup = usbtv_queue_setup, |
|
.buf_queue = usbtv_buf_queue, |
|
.start_streaming = usbtv_start_streaming, |
|
.stop_streaming = usbtv_stop_streaming, |
|
.wait_prepare = vb2_ops_wait_prepare, |
|
.wait_finish = vb2_ops_wait_finish, |
|
}; |
|
|
|
static int usbtv_s_ctrl(struct v4l2_ctrl *ctrl) |
|
{ |
|
struct usbtv *usbtv = container_of(ctrl->handler, struct usbtv, |
|
ctrl); |
|
u8 *data; |
|
u16 index, size; |
|
int ret; |
|
|
|
data = kmalloc(3, GFP_KERNEL); |
|
if (!data) |
|
return -ENOMEM; |
|
|
|
/* |
|
* Read in the current brightness/contrast registers. We need them |
|
* both, because the values are for some reason interleaved. |
|
*/ |
|
if (ctrl->id == V4L2_CID_BRIGHTNESS || ctrl->id == V4L2_CID_CONTRAST) { |
|
ret = usb_control_msg(usbtv->udev, |
|
usb_rcvctrlpipe(usbtv->udev, 0), USBTV_CONTROL_REG, |
|
USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
|
0, USBTV_BASE + 0x0244, (void *)data, 3, |
|
USB_CTRL_GET_TIMEOUT); |
|
if (ret < 0) |
|
goto error; |
|
} |
|
|
|
switch (ctrl->id) { |
|
case V4L2_CID_BRIGHTNESS: |
|
index = USBTV_BASE + 0x0244; |
|
size = 3; |
|
data[0] &= 0xf0; |
|
data[0] |= (ctrl->val >> 8) & 0xf; |
|
data[2] = ctrl->val & 0xff; |
|
break; |
|
case V4L2_CID_CONTRAST: |
|
index = USBTV_BASE + 0x0244; |
|
size = 3; |
|
data[0] &= 0x0f; |
|
data[0] |= (ctrl->val >> 4) & 0xf0; |
|
data[1] = ctrl->val & 0xff; |
|
break; |
|
case V4L2_CID_SATURATION: |
|
index = USBTV_BASE + 0x0242; |
|
data[0] = ctrl->val >> 8; |
|
data[1] = ctrl->val & 0xff; |
|
size = 2; |
|
break; |
|
case V4L2_CID_HUE: |
|
index = USBTV_BASE + 0x0240; |
|
size = 2; |
|
if (ctrl->val > 0) { |
|
data[0] = 0x92 + (ctrl->val >> 8); |
|
data[1] = ctrl->val & 0xff; |
|
} else { |
|
data[0] = 0x82 + (-ctrl->val >> 8); |
|
data[1] = -ctrl->val & 0xff; |
|
} |
|
break; |
|
case V4L2_CID_SHARPNESS: |
|
index = USBTV_BASE + 0x0239; |
|
data[0] = 0; |
|
data[1] = ctrl->val; |
|
size = 2; |
|
break; |
|
default: |
|
kfree(data); |
|
return -EINVAL; |
|
} |
|
|
|
ret = usb_control_msg(usbtv->udev, usb_sndctrlpipe(usbtv->udev, 0), |
|
USBTV_CONTROL_REG, |
|
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, |
|
0, index, (void *)data, size, USB_CTRL_SET_TIMEOUT); |
|
|
|
error: |
|
if (ret < 0) |
|
dev_warn(usbtv->dev, "Failed to submit a control request.\n"); |
|
|
|
kfree(data); |
|
return ret; |
|
} |
|
|
|
static const struct v4l2_ctrl_ops usbtv_ctrl_ops = { |
|
.s_ctrl = usbtv_s_ctrl, |
|
}; |
|
|
|
static void usbtv_release(struct v4l2_device *v4l2_dev) |
|
{ |
|
struct usbtv *usbtv = container_of(v4l2_dev, struct usbtv, v4l2_dev); |
|
|
|
v4l2_device_unregister(&usbtv->v4l2_dev); |
|
v4l2_ctrl_handler_free(&usbtv->ctrl); |
|
kfree(usbtv); |
|
} |
|
|
|
int usbtv_video_init(struct usbtv *usbtv) |
|
{ |
|
int ret; |
|
|
|
(void)usbtv_configure_for_norm(usbtv, V4L2_STD_525_60); |
|
|
|
spin_lock_init(&usbtv->buflock); |
|
mutex_init(&usbtv->v4l2_lock); |
|
mutex_init(&usbtv->vb2q_lock); |
|
INIT_LIST_HEAD(&usbtv->bufs); |
|
|
|
/* videobuf2 structure */ |
|
usbtv->vb2q.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
|
usbtv->vb2q.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; |
|
usbtv->vb2q.drv_priv = usbtv; |
|
usbtv->vb2q.buf_struct_size = sizeof(struct usbtv_buf); |
|
usbtv->vb2q.ops = &usbtv_vb2_ops; |
|
usbtv->vb2q.mem_ops = &vb2_vmalloc_memops; |
|
usbtv->vb2q.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
|
usbtv->vb2q.lock = &usbtv->vb2q_lock; |
|
ret = vb2_queue_init(&usbtv->vb2q); |
|
if (ret < 0) { |
|
dev_warn(usbtv->dev, "Could not initialize videobuf2 queue\n"); |
|
return ret; |
|
} |
|
|
|
/* controls */ |
|
v4l2_ctrl_handler_init(&usbtv->ctrl, 4); |
|
v4l2_ctrl_new_std(&usbtv->ctrl, &usbtv_ctrl_ops, |
|
V4L2_CID_CONTRAST, 0, 0x3ff, 1, 0x1d0); |
|
v4l2_ctrl_new_std(&usbtv->ctrl, &usbtv_ctrl_ops, |
|
V4L2_CID_BRIGHTNESS, 0, 0x3ff, 1, 0x1c0); |
|
v4l2_ctrl_new_std(&usbtv->ctrl, &usbtv_ctrl_ops, |
|
V4L2_CID_SATURATION, 0, 0x3ff, 1, 0x200); |
|
v4l2_ctrl_new_std(&usbtv->ctrl, &usbtv_ctrl_ops, |
|
V4L2_CID_HUE, -0xdff, 0xdff, 1, 0x000); |
|
v4l2_ctrl_new_std(&usbtv->ctrl, &usbtv_ctrl_ops, |
|
V4L2_CID_SHARPNESS, 0x0, 0xff, 1, 0x60); |
|
ret = usbtv->ctrl.error; |
|
if (ret < 0) { |
|
dev_warn(usbtv->dev, "Could not initialize controls\n"); |
|
goto ctrl_fail; |
|
} |
|
|
|
/* v4l2 structure */ |
|
usbtv->v4l2_dev.ctrl_handler = &usbtv->ctrl; |
|
usbtv->v4l2_dev.release = usbtv_release; |
|
ret = v4l2_device_register(usbtv->dev, &usbtv->v4l2_dev); |
|
if (ret < 0) { |
|
dev_warn(usbtv->dev, "Could not register v4l2 device\n"); |
|
goto v4l2_fail; |
|
} |
|
|
|
/* Video structure */ |
|
strscpy(usbtv->vdev.name, "usbtv", sizeof(usbtv->vdev.name)); |
|
usbtv->vdev.v4l2_dev = &usbtv->v4l2_dev; |
|
usbtv->vdev.release = video_device_release_empty; |
|
usbtv->vdev.fops = &usbtv_fops; |
|
usbtv->vdev.ioctl_ops = &usbtv_ioctl_ops; |
|
usbtv->vdev.tvnorms = USBTV_TV_STD; |
|
usbtv->vdev.queue = &usbtv->vb2q; |
|
usbtv->vdev.lock = &usbtv->v4l2_lock; |
|
usbtv->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | |
|
V4L2_CAP_STREAMING; |
|
video_set_drvdata(&usbtv->vdev, usbtv); |
|
ret = video_register_device(&usbtv->vdev, VFL_TYPE_VIDEO, -1); |
|
if (ret < 0) { |
|
dev_warn(usbtv->dev, "Could not register video device\n"); |
|
goto vdev_fail; |
|
} |
|
|
|
return 0; |
|
|
|
vdev_fail: |
|
v4l2_device_unregister(&usbtv->v4l2_dev); |
|
v4l2_fail: |
|
ctrl_fail: |
|
v4l2_ctrl_handler_free(&usbtv->ctrl); |
|
|
|
return ret; |
|
} |
|
|
|
void usbtv_video_free(struct usbtv *usbtv) |
|
{ |
|
mutex_lock(&usbtv->vb2q_lock); |
|
mutex_lock(&usbtv->v4l2_lock); |
|
|
|
usbtv_stop(usbtv); |
|
vb2_video_unregister_device(&usbtv->vdev); |
|
v4l2_device_disconnect(&usbtv->v4l2_dev); |
|
|
|
mutex_unlock(&usbtv->v4l2_lock); |
|
mutex_unlock(&usbtv->vb2q_lock); |
|
|
|
v4l2_device_put(&usbtv->v4l2_dev); |
|
}
|
|
|