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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 *4 * (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]5 */6 7#include "saa7134.h"8#include "saa7134-reg.h"9 10#include <linux/init.h>11#include <linux/list.h>12#include <linux/module.h>13#include <linux/kernel.h>14#include <linux/delay.h>15 16#include <media/v4l2-common.h>17#include <media/v4l2-event.h>18 19/* ------------------------------------------------------------------ */20 21MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");22MODULE_DESCRIPTION("Philips SAA7134 empress support");23MODULE_LICENSE("GPL");24 25static unsigned int empress_nr[] = {[0 ... (SAA7134_MAXBOARDS - 1)] = UNSET };26 27module_param_array(empress_nr, int, NULL, 0444);28MODULE_PARM_DESC(empress_nr,"ts device number");29 30/* ------------------------------------------------------------------ */31 32static int start_streaming(struct vb2_queue *vq, unsigned int count)33{34 struct saa7134_dmaqueue *dmaq = vq->drv_priv;35 struct saa7134_dev *dev = dmaq->dev;36 u32 leading_null_bytes = 0;37 int err;38 39 err = saa7134_ts_start_streaming(vq, count);40 if (err)41 return err;42 43 /* If more cards start to need this, then this44 should probably be added to the card definitions. */45 switch (dev->board) {46 case SAA7134_BOARD_BEHOLD_M6:47 case SAA7134_BOARD_BEHOLD_M63:48 case SAA7134_BOARD_BEHOLD_M6_EXTRA:49 leading_null_bytes = 1;50 break;51 }52 saa_call_all(dev, core, init, leading_null_bytes);53 /* Unmute audio */54 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,55 saa_readb(SAA7134_AUDIO_MUTE_CTRL) & ~(1 << 6));56 dev->empress_started = 1;57 return 0;58}59 60static void stop_streaming(struct vb2_queue *vq)61{62 struct saa7134_dmaqueue *dmaq = vq->drv_priv;63 struct saa7134_dev *dev = dmaq->dev;64 65 saa7134_ts_stop_streaming(vq);66 saa_writeb(SAA7134_SPECIAL_MODE, 0x00);67 msleep(20);68 saa_writeb(SAA7134_SPECIAL_MODE, 0x01);69 msleep(100);70 /* Mute audio */71 saa_writeb(SAA7134_AUDIO_MUTE_CTRL,72 saa_readb(SAA7134_AUDIO_MUTE_CTRL) | (1 << 6));73 dev->empress_started = 0;74}75 76static const struct vb2_ops saa7134_empress_qops = {77 .queue_setup = saa7134_ts_queue_setup,78 .buf_init = saa7134_ts_buffer_init,79 .buf_prepare = saa7134_ts_buffer_prepare,80 .buf_queue = saa7134_vb2_buffer_queue,81 .wait_prepare = vb2_ops_wait_prepare,82 .wait_finish = vb2_ops_wait_finish,83 .start_streaming = start_streaming,84 .stop_streaming = stop_streaming,85};86 87/* ------------------------------------------------------------------ */88 89static int empress_enum_fmt_vid_cap(struct file *file, void *priv,90 struct v4l2_fmtdesc *f)91{92 if (f->index != 0)93 return -EINVAL;94 95 f->pixelformat = V4L2_PIX_FMT_MPEG;96 return 0;97}98 99static int empress_g_fmt_vid_cap(struct file *file, void *priv,100 struct v4l2_format *f)101{102 struct saa7134_dev *dev = video_drvdata(file);103 struct v4l2_subdev_format fmt = {104 .which = V4L2_SUBDEV_FORMAT_ACTIVE,105 };106 struct v4l2_mbus_framefmt *mbus_fmt = &fmt.format;107 108 saa_call_all(dev, pad, get_fmt, NULL, &fmt);109 110 v4l2_fill_pix_format(&f->fmt.pix, mbus_fmt);111 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;112 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;113 f->fmt.pix.bytesperline = 0;114 115 return 0;116}117 118static int empress_s_fmt_vid_cap(struct file *file, void *priv,119 struct v4l2_format *f)120{121 struct saa7134_dev *dev = video_drvdata(file);122 struct v4l2_subdev_format format = {123 .which = V4L2_SUBDEV_FORMAT_ACTIVE,124 };125 126 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);127 saa_call_all(dev, pad, set_fmt, NULL, &format);128 v4l2_fill_pix_format(&f->fmt.pix, &format.format);129 130 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;131 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;132 f->fmt.pix.bytesperline = 0;133 134 return 0;135}136 137static int empress_try_fmt_vid_cap(struct file *file, void *priv,138 struct v4l2_format *f)139{140 struct saa7134_dev *dev = video_drvdata(file);141 struct v4l2_subdev_pad_config pad_cfg;142 struct v4l2_subdev_state pad_state = {143 .pads = &pad_cfg,144 };145 struct v4l2_subdev_format format = {146 .which = V4L2_SUBDEV_FORMAT_TRY,147 };148 149 v4l2_fill_mbus_format(&format.format, &f->fmt.pix, MEDIA_BUS_FMT_FIXED);150 saa_call_all(dev, pad, set_fmt, &pad_state, &format);151 v4l2_fill_pix_format(&f->fmt.pix, &format.format);152 153 f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;154 f->fmt.pix.sizeimage = TS_PACKET_SIZE * dev->ts.nr_packets;155 f->fmt.pix.bytesperline = 0;156 157 return 0;158}159 160static const struct v4l2_file_operations ts_fops =161{162 .owner = THIS_MODULE,163 .open = v4l2_fh_open,164 .release = vb2_fop_release,165 .read = vb2_fop_read,166 .poll = vb2_fop_poll,167 .mmap = vb2_fop_mmap,168 .unlocked_ioctl = video_ioctl2,169};170 171static const struct v4l2_ioctl_ops ts_ioctl_ops = {172 .vidioc_querycap = saa7134_querycap,173 .vidioc_enum_fmt_vid_cap = empress_enum_fmt_vid_cap,174 .vidioc_try_fmt_vid_cap = empress_try_fmt_vid_cap,175 .vidioc_s_fmt_vid_cap = empress_s_fmt_vid_cap,176 .vidioc_g_fmt_vid_cap = empress_g_fmt_vid_cap,177 .vidioc_reqbufs = vb2_ioctl_reqbufs,178 .vidioc_querybuf = vb2_ioctl_querybuf,179 .vidioc_qbuf = vb2_ioctl_qbuf,180 .vidioc_dqbuf = vb2_ioctl_dqbuf,181 .vidioc_expbuf = vb2_ioctl_expbuf,182 .vidioc_streamon = vb2_ioctl_streamon,183 .vidioc_streamoff = vb2_ioctl_streamoff,184 .vidioc_g_frequency = saa7134_g_frequency,185 .vidioc_s_frequency = saa7134_s_frequency,186 .vidioc_g_tuner = saa7134_g_tuner,187 .vidioc_s_tuner = saa7134_s_tuner,188 .vidioc_enum_input = saa7134_enum_input,189 .vidioc_g_input = saa7134_g_input,190 .vidioc_s_input = saa7134_s_input,191 .vidioc_s_std = saa7134_s_std,192 .vidioc_g_std = saa7134_g_std,193 .vidioc_querystd = saa7134_querystd,194 .vidioc_log_status = v4l2_ctrl_log_status,195 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,196 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,197};198 199/* ----------------------------------------------------------- */200 201static const struct video_device saa7134_empress_template = {202 .name = "saa7134-empress",203 .fops = &ts_fops,204 .ioctl_ops = &ts_ioctl_ops,205 206 .tvnorms = SAA7134_NORMS,207};208 209static void empress_signal_update(struct work_struct *work)210{211 struct saa7134_dev* dev =212 container_of(work, struct saa7134_dev, empress_workqueue);213 214 if (dev->nosignal) {215 pr_debug("no video signal\n");216 } else {217 pr_debug("video signal acquired\n");218 }219}220 221static void empress_signal_change(struct saa7134_dev *dev)222{223 schedule_work(&dev->empress_workqueue);224}225 226static bool empress_ctrl_filter(const struct v4l2_ctrl *ctrl)227{228 switch (ctrl->id) {229 case V4L2_CID_BRIGHTNESS:230 case V4L2_CID_HUE:231 case V4L2_CID_CONTRAST:232 case V4L2_CID_SATURATION:233 case V4L2_CID_AUDIO_MUTE:234 case V4L2_CID_AUDIO_VOLUME:235 case V4L2_CID_PRIVATE_INVERT:236 case V4L2_CID_PRIVATE_AUTOMUTE:237 return true;238 default:239 return false;240 }241}242 243static int empress_init(struct saa7134_dev *dev)244{245 struct v4l2_ctrl_handler *hdl = &dev->empress_ctrl_handler;246 struct vb2_queue *q;247 int err;248 249 pr_debug("%s: %s\n", dev->name, __func__);250 dev->empress_dev = video_device_alloc();251 if (NULL == dev->empress_dev)252 return -ENOMEM;253 *(dev->empress_dev) = saa7134_empress_template;254 dev->empress_dev->v4l2_dev = &dev->v4l2_dev;255 dev->empress_dev->release = video_device_release;256 dev->empress_dev->lock = &dev->lock;257 snprintf(dev->empress_dev->name, sizeof(dev->empress_dev->name),258 "%s empress (%s)", dev->name,259 saa7134_boards[dev->board].name);260 v4l2_ctrl_handler_init(hdl, 21);261 v4l2_ctrl_add_handler(hdl, &dev->ctrl_handler, empress_ctrl_filter, false);262 if (dev->empress_sd)263 v4l2_ctrl_add_handler(hdl, dev->empress_sd->ctrl_handler, NULL, true);264 if (hdl->error) {265 video_device_release(dev->empress_dev);266 return hdl->error;267 }268 dev->empress_dev->ctrl_handler = hdl;269 270 INIT_WORK(&dev->empress_workqueue, empress_signal_update);271 272 q = &dev->empress_vbq;273 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;274 /*275 * Do not add VB2_USERPTR: the saa7134 DMA engine cannot handle276 * transfers that do not start at the beginning of a page. A USERPTR277 * can start anywhere in a page, so USERPTR support is a no-go.278 */279 q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;280 q->drv_priv = &dev->ts_q;281 q->ops = &saa7134_empress_qops;282 q->gfp_flags = GFP_DMA32;283 q->mem_ops = &vb2_dma_sg_memops;284 q->buf_struct_size = sizeof(struct saa7134_buf);285 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;286 q->lock = &dev->lock;287 q->dev = &dev->pci->dev;288 err = vb2_queue_init(q);289 if (err) {290 video_device_release(dev->empress_dev);291 dev->empress_dev = NULL;292 return err;293 }294 dev->empress_dev->queue = q;295 dev->empress_dev->device_caps = V4L2_CAP_READWRITE | V4L2_CAP_STREAMING |296 V4L2_CAP_VIDEO_CAPTURE;297 if (dev->tuner_type != TUNER_ABSENT && dev->tuner_type != UNSET)298 dev->empress_dev->device_caps |= V4L2_CAP_TUNER;299 300 video_set_drvdata(dev->empress_dev, dev);301 err = video_register_device(dev->empress_dev,VFL_TYPE_VIDEO,302 empress_nr[dev->nr]);303 if (err < 0) {304 pr_info("%s: can't register video device\n",305 dev->name);306 video_device_release(dev->empress_dev);307 dev->empress_dev = NULL;308 return err;309 }310 pr_info("%s: registered device %s [mpeg]\n",311 dev->name, video_device_node_name(dev->empress_dev));312 313 empress_signal_update(&dev->empress_workqueue);314 return 0;315}316 317static int empress_fini(struct saa7134_dev *dev)318{319 pr_debug("%s: %s\n", dev->name, __func__);320 321 if (NULL == dev->empress_dev)322 return 0;323 flush_work(&dev->empress_workqueue);324 vb2_video_unregister_device(dev->empress_dev);325 v4l2_ctrl_handler_free(&dev->empress_ctrl_handler);326 dev->empress_dev = NULL;327 return 0;328}329 330static struct saa7134_mpeg_ops empress_ops = {331 .type = SAA7134_MPEG_EMPRESS,332 .init = empress_init,333 .fini = empress_fini,334 .signal_change = empress_signal_change,335};336 337static int __init empress_register(void)338{339 return saa7134_ts_register(&empress_ops);340}341 342static void __exit empress_unregister(void)343{344 saa7134_ts_unregister(&empress_ops);345}346 347module_init(empress_register);348module_exit(empress_unregister);349