1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Hauppauge HD PVR USB driver - video 4 linux 2 interface 4 * 5 * Copyright (C) 2008 Janne Grunau (j@jannau.net) 6 */ 7 8 #include <linux/kernel.h> 9 #include <linux/errno.h> 10 #include <linux/init.h> 11 #include <linux/slab.h> 12 #include <linux/module.h> 13 #include <linux/usb.h> 14 #include <linux/mutex.h> 15 16 #include <linux/videodev2.h> 17 18 #include <media/v4l2-common.h> 19 20 #include "hdpvr.h" 21 22 23 int hdpvr_config_call(struct hdpvr_device *dev, uint value, u8 valbuf) 24 { 25 int ret; 26 char request_type = 0x38, snd_request = 0x01; 27 28 mutex_lock(&dev->usbc_mutex); 29 dev->usbc_buf[0] = valbuf; 30 ret = usb_control_msg(dev->udev, 31 usb_sndctrlpipe(dev->udev, 0), 32 snd_request, 0x00 | request_type, 33 value, CTRL_DEFAULT_INDEX, 34 dev->usbc_buf, 1, 10000); 35 36 mutex_unlock(&dev->usbc_mutex); 37 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 38 "config call request for value 0x%x returned %d\n", value, 39 ret); 40 41 return ret < 0 ? ret : 0; 42 } 43 44 int get_video_info(struct hdpvr_device *dev, struct hdpvr_video_info *vidinf) 45 { 46 int ret; 47 48 vidinf->valid = false; 49 mutex_lock(&dev->usbc_mutex); 50 ret = usb_control_msg(dev->udev, 51 usb_rcvctrlpipe(dev->udev, 0), 52 0x81, 0x80 | 0x38, 53 0x1400, 0x0003, 54 dev->usbc_buf, 5, 55 1000); 56 57 #ifdef HDPVR_DEBUG 58 if (hdpvr_debug & MSG_INFO) 59 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 60 "get video info returned: %d, %5ph\n", ret, 61 dev->usbc_buf); 62 #endif 63 mutex_unlock(&dev->usbc_mutex); 64 65 if (ret < 0) 66 return ret; 67 68 vidinf->width = dev->usbc_buf[1] << 8 | dev->usbc_buf[0]; 69 vidinf->height = dev->usbc_buf[3] << 8 | dev->usbc_buf[2]; 70 vidinf->fps = dev->usbc_buf[4]; 71 vidinf->valid = vidinf->width && vidinf->height && vidinf->fps; 72 73 return 0; 74 } 75 76 int get_input_lines_info(struct hdpvr_device *dev) 77 { 78 int ret, lines; 79 80 mutex_lock(&dev->usbc_mutex); 81 ret = usb_control_msg(dev->udev, 82 usb_rcvctrlpipe(dev->udev, 0), 83 0x81, 0x80 | 0x38, 84 0x1800, 0x0003, 85 dev->usbc_buf, 3, 86 1000); 87 88 #ifdef HDPVR_DEBUG 89 if (hdpvr_debug & MSG_INFO) 90 v4l2_dbg(MSG_INFO, hdpvr_debug, &dev->v4l2_dev, 91 "get input lines info returned: %d, %3ph\n", ret, 92 dev->usbc_buf); 93 #else 94 (void)ret; /* suppress compiler warning */ 95 #endif 96 lines = dev->usbc_buf[1] << 8 | dev->usbc_buf[0]; 97 mutex_unlock(&dev->usbc_mutex); 98 return lines; 99 } 100 101 102 int hdpvr_set_bitrate(struct hdpvr_device *dev) 103 { 104 int ret; 105 106 mutex_lock(&dev->usbc_mutex); 107 memset(dev->usbc_buf, 0, 4); 108 dev->usbc_buf[0] = dev->options.bitrate; 109 dev->usbc_buf[2] = dev->options.peak_bitrate; 110 111 ret = usb_control_msg(dev->udev, 112 usb_sndctrlpipe(dev->udev, 0), 113 0x01, 0x38, CTRL_BITRATE_VALUE, 114 CTRL_DEFAULT_INDEX, dev->usbc_buf, 4, 1000); 115 mutex_unlock(&dev->usbc_mutex); 116 117 return ret; 118 } 119 120 int hdpvr_set_audio(struct hdpvr_device *dev, u8 input, 121 enum v4l2_mpeg_audio_encoding codec) 122 { 123 int ret = 0; 124 125 if (dev->flags & HDPVR_FLAG_AC3_CAP) { 126 mutex_lock(&dev->usbc_mutex); 127 memset(dev->usbc_buf, 0, 2); 128 dev->usbc_buf[0] = input; 129 if (codec == V4L2_MPEG_AUDIO_ENCODING_AAC) 130 dev->usbc_buf[1] = 0; 131 else if (codec == V4L2_MPEG_AUDIO_ENCODING_AC3) 132 dev->usbc_buf[1] = 1; 133 else { 134 mutex_unlock(&dev->usbc_mutex); 135 v4l2_err(&dev->v4l2_dev, "invalid audio codec %d\n", 136 codec); 137 ret = -EINVAL; 138 goto error; 139 } 140 141 ret = usb_control_msg(dev->udev, 142 usb_sndctrlpipe(dev->udev, 0), 143 0x01, 0x38, CTRL_AUDIO_INPUT_VALUE, 144 CTRL_DEFAULT_INDEX, dev->usbc_buf, 2, 145 1000); 146 mutex_unlock(&dev->usbc_mutex); 147 if (ret == 2) 148 ret = 0; 149 } else 150 ret = hdpvr_config_call(dev, CTRL_AUDIO_INPUT_VALUE, input); 151 error: 152 return ret; 153 } 154 155 int hdpvr_set_options(struct hdpvr_device *dev) 156 { 157 hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, dev->options.video_std); 158 159 hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, 160 dev->options.video_input+1); 161 162 hdpvr_set_audio(dev, dev->options.audio_input+1, 163 dev->options.audio_codec); 164 165 hdpvr_set_bitrate(dev); 166 hdpvr_config_call(dev, CTRL_BITRATE_MODE_VALUE, 167 dev->options.bitrate_mode); 168 hdpvr_config_call(dev, CTRL_GOP_MODE_VALUE, dev->options.gop_mode); 169 170 hdpvr_config_call(dev, CTRL_BRIGHTNESS, dev->options.brightness); 171 hdpvr_config_call(dev, CTRL_CONTRAST, dev->options.contrast); 172 hdpvr_config_call(dev, CTRL_HUE, dev->options.hue); 173 hdpvr_config_call(dev, CTRL_SATURATION, dev->options.saturation); 174 hdpvr_config_call(dev, CTRL_SHARPNESS, dev->options.sharpness); 175 176 return 0; 177 } 178