--- /dev/null
+/*
+ * Driver for the NXP SAA7164 PCIe bridge
+ *
+ * Copyright (c) 2010 Steven Toth <stoth@kernellabs.com>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "saa7164.h"
+
+static struct saa7164_tvnorm saa7164_tvnorms[] = {
+ {
+ .name = "NTSC-M",
+ .id = V4L2_STD_NTSC_M,
+ }, {
+ .name = "NTSC-JP",
+ .id = V4L2_STD_NTSC_M_JP,
+ }
+};
+
+static const u32 saa7164_v4l2_ctrls[] = {
+ 0
+};
+
+/* Take the encoder configuration from the port struct and
+ * flush it to the hardware.
+ */
+static void saa7164_vbi_configure(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ dprintk(DBGLVL_VBI, "%s()\n", __func__);
+
+ port->vbi_params.width = port->width;
+ port->vbi_params.height = port->height;
+ port->vbi_params.is_50hz =
+ (port->encodernorm.id & V4L2_STD_625_50) != 0;
+
+ /* Set up the DIF (enable it) for analog mode by default */
+ saa7164_api_initialize_dif(port);
+
+ /* Configure the correct video standard */
+#if 0
+ saa7164_api_configure_dif(port, port->encodernorm.id);
+#endif
+
+#if 0
+ /* Ensure the audio decoder is correct configured */
+ saa7164_api_set_audio_std(port);
+#endif
+ dprintk(DBGLVL_VBI, "%s() ends\n", __func__);
+}
+
+static int saa7164_vbi_buffers_dealloc(struct saa7164_port *port)
+{
+ struct list_head *c, *n, *p, *q, *l, *v;
+ struct saa7164_dev *dev = port->dev;
+ struct saa7164_buffer *buf;
+ struct saa7164_user_buffer *ubuf;
+
+ /* Remove any allocated buffers */
+ mutex_lock(&port->dmaqueue_lock);
+
+ dprintk(DBGLVL_VBI, "%s(port=%d) dmaqueue\n", __func__, port->nr);
+ list_for_each_safe(c, n, &port->dmaqueue.list) {
+ buf = list_entry(c, struct saa7164_buffer, list);
+ list_del(c);
+ saa7164_buffer_dealloc(buf);
+ }
+
+ dprintk(DBGLVL_VBI, "%s(port=%d) used\n", __func__, port->nr);
+ list_for_each_safe(p, q, &port->list_buf_used.list) {
+ ubuf = list_entry(p, struct saa7164_user_buffer, list);
+ list_del(p);
+ saa7164_buffer_dealloc_user(ubuf);
+ }
+
+ dprintk(DBGLVL_VBI, "%s(port=%d) free\n", __func__, port->nr);
+ list_for_each_safe(l, v, &port->list_buf_free.list) {
+ ubuf = list_entry(l, struct saa7164_user_buffer, list);
+ list_del(l);
+ saa7164_buffer_dealloc_user(ubuf);
+ }
+
+ mutex_unlock(&port->dmaqueue_lock);
+ dprintk(DBGLVL_VBI, "%s(port=%d) done\n", __func__, port->nr);
+
+ return 0;
+}
+
+/* Dynamic buffer switch at vbi start time */
+static int saa7164_vbi_buffers_alloc(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ struct saa7164_buffer *buf;
+ struct saa7164_user_buffer *ubuf;
+ struct tmHWStreamParameters *params = &port->hw_streamingparams;
+ int result = -ENODEV, i;
+ int len = 0;
+
+ dprintk(DBGLVL_VBI, "%s()\n", __func__);
+
+ /* TODO: NTSC SPECIFIC */
+ /* Init and establish defaults */
+ params->samplesperline = 1440;
+ params->numberoflines = 12;
+ params->numberoflines = 18;
+ params->pitch = 1600;
+ params->pitch = 1440;
+ params->numpagetables = 2 +
+ ((params->numberoflines * params->pitch) / PAGE_SIZE);
+ params->bitspersample = 8;
+ params->linethreshold = 0;
+ params->pagetablelistvirt = NULL;
+ params->pagetablelistphys = NULL;
+ params->numpagetableentries = port->hwcfg.buffercount;
+
+ /* Allocate the PCI resources, buffers (hard) */
+ for (i = 0; i < port->hwcfg.buffercount; i++) {
+ buf = saa7164_buffer_alloc(port,
+ params->numberoflines *
+ params->pitch);
+
+ if (!buf) {
+ printk(KERN_ERR "%s() failed "
+ "(errno = %d), unable to allocate buffer\n",
+ __func__, result);
+ result = -ENOMEM;
+ goto failed;
+ } else {
+
+ mutex_lock(&port->dmaqueue_lock);
+ list_add_tail(&buf->list, &port->dmaqueue.list);
+ mutex_unlock(&port->dmaqueue_lock);
+
+ }
+ }
+
+ /* Allocate some kernel buffers for copying
+ * to userpsace.
+ */
+ len = params->numberoflines * params->pitch;
+
+ if (vbi_buffers < 16)
+ vbi_buffers = 16;
+ if (vbi_buffers > 512)
+ vbi_buffers = 512;
+
+ for (i = 0; i < vbi_buffers; i++) {
+
+ ubuf = saa7164_buffer_alloc_user(dev, len);
+ if (ubuf) {
+ mutex_lock(&port->dmaqueue_lock);
+ list_add_tail(&ubuf->list, &port->list_buf_free.list);
+ mutex_unlock(&port->dmaqueue_lock);
+ }
+
+ }
+
+ result = 0;
+
+failed:
+ return result;
+}
+
+
+static int saa7164_vbi_initialize(struct saa7164_port *port)
+{
+ saa7164_vbi_configure(port);
+ return 0;
+}
+
+/* -- V4L2 --------------------------------------------------------- */
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id id)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+ unsigned int i;
+
+ dprintk(DBGLVL_VBI, "%s(id=0x%x)\n", __func__, (u32)id);
+
+ for (i = 0; i < ARRAY_SIZE(saa7164_tvnorms); i++) {
+ if (id & saa7164_tvnorms[i].id)
+ break;
+ }
+ if (i == ARRAY_SIZE(saa7164_tvnorms))
+ return -EINVAL;
+
+ port->encodernorm = saa7164_tvnorms[i];
+ port->std = id;
+
+ /* Update the audio decoder while is not running in
+ * auto detect mode.
+ */
+ saa7164_api_set_audio_std(port);
+
+ dprintk(DBGLVL_VBI, "%s(id=0x%x) OK\n", __func__, (u32)id);
+
+ return 0;
+}
+
+static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *id)
+{
+ struct saa7164_encoder_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+
+ *id = port->std;
+ return 0;
+}
+
+static int vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *i)
+{
+ int n;
+
+ char *inputs[] = { "tuner", "composite", "svideo", "aux",
+ "composite 2", "svideo 2", "aux 2" };
+
+ if (i->index >= 7)
+ return -EINVAL;
+
+ strcpy(i->name, inputs[i->index]);
+
+ if (i->index == 0)
+ i->type = V4L2_INPUT_TYPE_TUNER;
+ else
+ i->type = V4L2_INPUT_TYPE_CAMERA;
+
+ for (n = 0; n < ARRAY_SIZE(saa7164_tvnorms); n++)
+ i->std |= saa7164_tvnorms[n].id;
+
+ return 0;
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ if (saa7164_api_get_videomux(port) != SAA_OK)
+ return -EIO;
+
+ *i = (port->mux_input - 1);
+
+ dprintk(DBGLVL_VBI, "%s() input=%d\n", __func__, *i);
+
+ return 0;
+}
+
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ dprintk(DBGLVL_VBI, "%s() input=%d\n", __func__, i);
+
+ if (i >= 7)
+ return -EINVAL;
+
+ port->mux_input = i + 1;
+
+ if (saa7164_api_set_videomux(port) != SAA_OK)
+ return -EIO;
+
+ return 0;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *t)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ if (0 != t->index)
+ return -EINVAL;
+
+ strcpy(t->name, "tuner");
+ t->type = V4L2_TUNER_ANALOG_TV;
+ t->capability = V4L2_TUNER_CAP_NORM | V4L2_TUNER_CAP_STEREO;
+
+ dprintk(DBGLVL_VBI, "VIDIOC_G_TUNER: tuner type %d\n", t->type);
+
+ return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+ const struct v4l2_tuner *t)
+{
+ /* Update the A/V core */
+ return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+
+ f->type = V4L2_TUNER_ANALOG_TV;
+ f->frequency = port->freq;
+
+ return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+ const struct v4l2_frequency *f)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+ struct saa7164_port *tsport;
+ struct dvb_frontend *fe;
+
+ /* TODO: Pull this for the std */
+ struct analog_parameters params = {
+ .mode = V4L2_TUNER_ANALOG_TV,
+ .audmode = V4L2_TUNER_MODE_STEREO,
+ .std = port->encodernorm.id,
+ .frequency = f->frequency
+ };
+
+ /* Stop the encoder */
+ dprintk(DBGLVL_VBI, "%s() frequency=%d tuner=%d\n", __func__,
+ f->frequency, f->tuner);
+
+ if (f->tuner != 0)
+ return -EINVAL;
+
+ if (f->type != V4L2_TUNER_ANALOG_TV)
+ return -EINVAL;
+
+ port->freq = f->frequency;
+
+ /* Update the hardware */
+ if (port->nr == SAA7164_PORT_VBI1)
+ tsport = &dev->ports[SAA7164_PORT_TS1];
+ else
+ if (port->nr == SAA7164_PORT_VBI2)
+ tsport = &dev->ports[SAA7164_PORT_TS2];
+ else
+ BUG();
+
+ fe = tsport->dvb.frontend;
+
+ if (fe && fe->ops.tuner_ops.set_analog_params)
+ fe->ops.tuner_ops.set_analog_params(fe, ¶ms);
+ else
+ printk(KERN_ERR "%s() No analog tuner, aborting\n", __func__);
+
+ saa7164_vbi_initialize(port);
+
+ return 0;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctl)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ dprintk(DBGLVL_VBI, "%s(id=%d, value=%d)\n", __func__,
+ ctl->id, ctl->value);
+
+ switch (ctl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ ctl->value = port->ctl_brightness;
+ break;
+ case V4L2_CID_CONTRAST:
+ ctl->value = port->ctl_contrast;
+ break;
+ case V4L2_CID_SATURATION:
+ ctl->value = port->ctl_saturation;
+ break;
+ case V4L2_CID_HUE:
+ ctl->value = port->ctl_hue;
+ break;
+ case V4L2_CID_SHARPNESS:
+ ctl->value = port->ctl_sharpness;
+ break;
+ case V4L2_CID_AUDIO_VOLUME:
+ ctl->value = port->ctl_volume;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctl)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+ int ret = 0;
+
+ dprintk(DBGLVL_VBI, "%s(id=%d, value=%d)\n", __func__,
+ ctl->id, ctl->value);
+
+ switch (ctl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ if ((ctl->value >= 0) && (ctl->value <= 255)) {
+ port->ctl_brightness = ctl->value;
+ saa7164_api_set_usercontrol(port,
+ PU_BRIGHTNESS_CONTROL);
+ } else
+ ret = -EINVAL;
+ break;
+ case V4L2_CID_CONTRAST:
+ if ((ctl->value >= 0) && (ctl->value <= 255)) {
+ port->ctl_contrast = ctl->value;
+ saa7164_api_set_usercontrol(port, PU_CONTRAST_CONTROL);
+ } else
+ ret = -EINVAL;
+ break;
+ case V4L2_CID_SATURATION:
+ if ((ctl->value >= 0) && (ctl->value <= 255)) {
+ port->ctl_saturation = ctl->value;
+ saa7164_api_set_usercontrol(port,
+ PU_SATURATION_CONTROL);
+ } else
+ ret = -EINVAL;
+ break;
+ case V4L2_CID_HUE:
+ if ((ctl->value >= 0) && (ctl->value <= 255)) {
+ port->ctl_hue = ctl->value;
+ saa7164_api_set_usercontrol(port, PU_HUE_CONTROL);
+ } else
+ ret = -EINVAL;
+ break;
+ case V4L2_CID_SHARPNESS:
+ if ((ctl->value >= 0) && (ctl->value <= 255)) {
+ port->ctl_sharpness = ctl->value;
+ saa7164_api_set_usercontrol(port, PU_SHARPNESS_CONTROL);
+ } else
+ ret = -EINVAL;
+ break;
+ case V4L2_CID_AUDIO_VOLUME:
+ if ((ctl->value >= -83) && (ctl->value <= 24)) {
+ port->ctl_volume = ctl->value;
+ saa7164_api_set_audio_volume(port, port->ctl_volume);
+ } else
+ ret = -EINVAL;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int saa7164_get_ctrl(struct saa7164_port *port,
+ struct v4l2_ext_control *ctrl)
+{
+ struct saa7164_vbi_params *params = &port->vbi_params;
+
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ ctrl->value = params->stream_type;
+ break;
+ case V4L2_CID_MPEG_AUDIO_MUTE:
+ ctrl->value = params->ctl_mute;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ ctrl->value = params->ctl_aspect;
+ break;
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+ ctrl->value = params->refdist;
+ break;
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
+ ctrl->value = params->gop_size;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int vidioc_g_ext_ctrls(struct file *file, void *priv,
+ struct v4l2_ext_controls *ctrls)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ int i, err = 0;
+
+ if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
+
+ err = saa7164_get_ctrl(port, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
+ }
+ return err;
+
+ }
+
+ return -EINVAL;
+}
+
+static int saa7164_try_ctrl(struct v4l2_ext_control *ctrl, int ac3)
+{
+ int ret = -EINVAL;
+
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ if ((ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_PS) ||
+ (ctrl->value == V4L2_MPEG_STREAM_TYPE_MPEG2_TS))
+ ret = 0;
+ break;
+ case V4L2_CID_MPEG_AUDIO_MUTE:
+ if ((ctrl->value >= 0) &&
+ (ctrl->value <= 1))
+ ret = 0;
+ break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ if ((ctrl->value >= V4L2_MPEG_VIDEO_ASPECT_1x1) &&
+ (ctrl->value <= V4L2_MPEG_VIDEO_ASPECT_221x100))
+ ret = 0;
+ break;
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
+ if ((ctrl->value >= 0) &&
+ (ctrl->value <= 255))
+ ret = 0;
+ break;
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+ if ((ctrl->value >= 1) &&
+ (ctrl->value <= 3))
+ ret = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int vidioc_try_ext_ctrls(struct file *file, void *priv,
+ struct v4l2_ext_controls *ctrls)
+{
+ int i, err = 0;
+
+ if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
+
+ err = saa7164_try_ctrl(ctrl, 0);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
+ }
+ return err;
+ }
+
+ return -EINVAL;
+}
+
+static int saa7164_set_ctrl(struct saa7164_port *port,
+ struct v4l2_ext_control *ctrl)
+{
+ struct saa7164_vbi_params *params = &port->vbi_params;
+ int ret = 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ params->stream_type = ctrl->value;
+ break;
+ case V4L2_CID_MPEG_AUDIO_MUTE:
+ params->ctl_mute = ctrl->value;
+ ret = saa7164_api_audio_mute(port, params->ctl_mute);
+ if (ret != SAA_OK) {
+ printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
+ ret);
+ ret = -EIO;
+ }
+ break;
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ params->ctl_aspect = ctrl->value;
+ ret = saa7164_api_set_aspect_ratio(port);
+ if (ret != SAA_OK) {
+ printk(KERN_ERR "%s() error, ret = 0x%x\n", __func__,
+ ret);
+ ret = -EIO;
+ }
+ break;
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+ params->refdist = ctrl->value;
+ break;
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
+ params->gop_size = ctrl->value;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* TODO: Update the hardware */
+
+ return ret;
+}
+
+static int vidioc_s_ext_ctrls(struct file *file, void *priv,
+ struct v4l2_ext_controls *ctrls)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ int i, err = 0;
+
+ if (ctrls->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
+ for (i = 0; i < ctrls->count; i++) {
+ struct v4l2_ext_control *ctrl = ctrls->controls + i;
+
+ err = saa7164_try_ctrl(ctrl, 0);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
+ err = saa7164_set_ctrl(port, ctrl);
+ if (err) {
+ ctrls->error_idx = i;
+ break;
+ }
+ }
+ return err;
+
+ }
+
+ return -EINVAL;
+}
+
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ strcpy(cap->driver, dev->name);
+ strlcpy(cap->card, saa7164_boards[dev->board].name,
+ sizeof(cap->card));
+ sprintf(cap->bus_info, "PCI:%s", pci_name(dev->pci));
+
+ cap->capabilities =
+ V4L2_CAP_VBI_CAPTURE |
+ V4L2_CAP_READWRITE |
+ 0;
+
+ cap->capabilities |= V4L2_CAP_TUNER;
+ cap->version = 0;
+
+ return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ if (f->index != 0)
+ return -EINVAL;
+
+ strlcpy(f->description, "VBI", sizeof(f->description));
+ f->pixelformat = V4L2_PIX_FMT_MPEG;
+
+ return 0;
+}
+
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.bytesperline = 0;
+ f->fmt.pix.sizeimage =
+ port->ts_packet_size * port->ts_packet_count;
+ f->fmt.pix.colorspace = 0;
+ f->fmt.pix.width = port->width;
+ f->fmt.pix.height = port->height;
+
+ dprintk(DBGLVL_VBI, "VIDIOC_G_FMT: w: %d, h: %d\n",
+ port->width, port->height);
+
+ return 0;
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.bytesperline = 0;
+ f->fmt.pix.sizeimage =
+ port->ts_packet_size * port->ts_packet_count;
+ f->fmt.pix.colorspace = 0;
+ dprintk(DBGLVL_VBI, "VIDIOC_TRY_FMT: w: %d, h: %d\n",
+ port->width, port->height);
+ return 0;
+}
+
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ f->fmt.pix.pixelformat = V4L2_PIX_FMT_MPEG;
+ f->fmt.pix.bytesperline = 0;
+ f->fmt.pix.sizeimage =
+ port->ts_packet_size * port->ts_packet_count;
+ f->fmt.pix.colorspace = 0;
+
+ dprintk(DBGLVL_VBI, "VIDIOC_S_FMT: w: %d, h: %d, f: %d\n",
+ f->fmt.pix.width, f->fmt.pix.height, f->fmt.pix.field);
+
+ return 0;
+}
+
+static int fill_queryctrl(struct saa7164_vbi_params *params,
+ struct v4l2_queryctrl *c)
+{
+ switch (c->id) {
+ case V4L2_CID_BRIGHTNESS:
+ return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 127);
+ case V4L2_CID_CONTRAST:
+ return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 66);
+ case V4L2_CID_SATURATION:
+ return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 62);
+ case V4L2_CID_HUE:
+ return v4l2_ctrl_query_fill(c, 0x0, 0xff, 1, 128);
+ case V4L2_CID_SHARPNESS:
+ return v4l2_ctrl_query_fill(c, 0x0, 0x0f, 1, 8);
+ case V4L2_CID_MPEG_AUDIO_MUTE:
+ return v4l2_ctrl_query_fill(c, 0x0, 0x01, 1, 0);
+ case V4L2_CID_AUDIO_VOLUME:
+ return v4l2_ctrl_query_fill(c, -83, 24, 1, 20);
+ case V4L2_CID_MPEG_STREAM_TYPE:
+ return v4l2_ctrl_query_fill(c,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_PS,
+ V4L2_MPEG_STREAM_TYPE_MPEG2_TS,
+ 1, V4L2_MPEG_STREAM_TYPE_MPEG2_PS);
+ case V4L2_CID_MPEG_VIDEO_ASPECT:
+ return v4l2_ctrl_query_fill(c,
+ V4L2_MPEG_VIDEO_ASPECT_1x1,
+ V4L2_MPEG_VIDEO_ASPECT_221x100,
+ 1, V4L2_MPEG_VIDEO_ASPECT_4x3);
+ case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
+ return v4l2_ctrl_query_fill(c, 1, 255, 1, 15);
+ case V4L2_CID_MPEG_VIDEO_B_FRAMES:
+ return v4l2_ctrl_query_fill(c,
+ 1, 3, 1, 1);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *c)
+{
+ struct saa7164_vbi_fh *fh = priv;
+ struct saa7164_port *port = fh->port;
+ int i, next;
+ u32 id = c->id;
+
+ memset(c, 0, sizeof(*c));
+
+ next = !!(id & V4L2_CTRL_FLAG_NEXT_CTRL);
+ c->id = id & ~V4L2_CTRL_FLAG_NEXT_CTRL;
+
+ for (i = 0; i < ARRAY_SIZE(saa7164_v4l2_ctrls); i++) {
+ if (next) {
+ if (c->id < saa7164_v4l2_ctrls[i])
+ c->id = saa7164_v4l2_ctrls[i];
+ else
+ continue;
+ }
+
+ if (c->id == saa7164_v4l2_ctrls[i])
+ return fill_queryctrl(&port->vbi_params, c);
+
+ if (c->id < saa7164_v4l2_ctrls[i])
+ break;
+ }
+
+ return -EINVAL;
+}
+
+static int saa7164_vbi_stop_port(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ int ret;
+
+ ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
+ if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
+ printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n",
+ __func__, ret);
+ ret = -EIO;
+ } else {
+ dprintk(DBGLVL_VBI, "%s() Stopped\n", __func__);
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static int saa7164_vbi_acquire_port(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ int ret;
+
+ ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
+ if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
+ printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n",
+ __func__, ret);
+ ret = -EIO;
+ } else {
+ dprintk(DBGLVL_VBI, "%s() Acquired\n", __func__);
+ ret = 0;
+ }
+
+ return ret;
+}
+
+static int saa7164_vbi_pause_port(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ int ret;
+
+ ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
+ if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
+ printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n",
+ __func__, ret);
+ ret = -EIO;
+ } else {
+ dprintk(DBGLVL_VBI, "%s() Paused\n", __func__);
+ ret = 0;
+ }
+
+ return ret;
+}
+
+/* Firmware is very windows centric, meaning you have to transition
+ * the part through AVStream / KS Windows stages, forwards or backwards.
+ * States are: stopped, acquired (h/w), paused, started.
+ * We have to leave here will all of the soft buffers on the free list,
+ * else the cfg_post() func won't have soft buffers to correctly configure.
+ */
+static int saa7164_vbi_stop_streaming(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ struct saa7164_buffer *buf;
+ struct saa7164_user_buffer *ubuf;
+ struct list_head *c, *n;
+ int ret;
+
+ dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
+
+ ret = saa7164_vbi_pause_port(port);
+ ret = saa7164_vbi_acquire_port(port);
+ ret = saa7164_vbi_stop_port(port);
+
+ dprintk(DBGLVL_VBI, "%s(port=%d) Hardware stopped\n", __func__,
+ port->nr);
+
+ /* Reset the state of any allocated buffer resources */
+ mutex_lock(&port->dmaqueue_lock);
+
+ /* Reset the hard and soft buffer state */
+ list_for_each_safe(c, n, &port->dmaqueue.list) {
+ buf = list_entry(c, struct saa7164_buffer, list);
+ buf->flags = SAA7164_BUFFER_FREE;
+ buf->pos = 0;
+ }
+
+ list_for_each_safe(c, n, &port->list_buf_used.list) {
+ ubuf = list_entry(c, struct saa7164_user_buffer, list);
+ ubuf->pos = 0;
+ list_move_tail(&ubuf->list, &port->list_buf_free.list);
+ }
+
+ mutex_unlock(&port->dmaqueue_lock);
+
+ /* Free any allocated resources */
+ saa7164_vbi_buffers_dealloc(port);
+
+ dprintk(DBGLVL_VBI, "%s(port=%d) Released\n", __func__, port->nr);
+
+ return ret;
+}
+
+static int saa7164_vbi_start_streaming(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ int result, ret = 0;
+
+ dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
+
+ port->done_first_interrupt = 0;
+
+ /* allocate all of the PCIe DMA buffer resources on the fly,
+ * allowing switching between TS and PS payloads without
+ * requiring a complete driver reload.
+ */
+ saa7164_vbi_buffers_alloc(port);
+
+ /* Configure the encoder with any cache values */
+#if 0
+ saa7164_api_set_encoder(port);
+ saa7164_api_get_encoder(port);
+#endif
+
+ /* Place the empty buffers on the hardware */
+ saa7164_buffer_cfg_port(port);
+
+ /* Negotiate format */
+ if (saa7164_api_set_vbi_format(port) != SAA_OK) {
+ printk(KERN_ERR "%s() No supported VBI format\n", __func__);
+ ret = -EIO;
+ goto out;
+ }
+
+ /* Acquire the hardware */
+ result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
+ if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
+ printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n",
+ __func__, result);
+
+ ret = -EIO;
+ goto out;
+ } else
+ dprintk(DBGLVL_VBI, "%s() Acquired\n", __func__);
+
+ /* Pause the hardware */
+ result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
+ if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
+ printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n",
+ __func__, result);
+
+ /* Stop the hardware, regardless */
+ result = saa7164_vbi_stop_port(port);
+ if (result != SAA_OK) {
+ printk(KERN_ERR "%s() pause/forced stop transition "
+ "failed, res = 0x%x\n", __func__, result);
+ }
+
+ ret = -EIO;
+ goto out;
+ } else
+ dprintk(DBGLVL_VBI, "%s() Paused\n", __func__);
+
+ /* Start the hardware */
+ result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN);
+ if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
+ printk(KERN_ERR "%s() run transition failed, result = 0x%x\n",
+ __func__, result);
+
+ /* Stop the hardware, regardless */
+ result = saa7164_vbi_acquire_port(port);
+ result = saa7164_vbi_stop_port(port);
+ if (result != SAA_OK) {
+ printk(KERN_ERR "%s() run/forced stop transition "
+ "failed, res = 0x%x\n", __func__, result);
+ }
+
+ ret = -EIO;
+ } else
+ dprintk(DBGLVL_VBI, "%s() Running\n", __func__);
+
+out:
+ return ret;
+}
+
+static int saa7164_vbi_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ /* ntsc */
+ f->fmt.vbi.samples_per_line = 1600;
+ f->fmt.vbi.samples_per_line = 1440;
+ f->fmt.vbi.sampling_rate = 27000000;
+ f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
+ f->fmt.vbi.offset = 0;
+ f->fmt.vbi.flags = 0;
+ f->fmt.vbi.start[0] = 10;
+ f->fmt.vbi.count[0] = 18;
+ f->fmt.vbi.start[1] = 263 + 10 + 1;
+ f->fmt.vbi.count[1] = 18;
+ return 0;
+}
+
+static int fops_open(struct file *file)
+{
+ struct saa7164_dev *dev;
+ struct saa7164_port *port;
+ struct saa7164_vbi_fh *fh;
+
+ port = (struct saa7164_port *)video_get_drvdata(video_devdata(file));
+ if (!port)
+ return -ENODEV;
+
+ dev = port->dev;
+
+ dprintk(DBGLVL_VBI, "%s()\n", __func__);
+
+ /* allocate + initialize per filehandle data */
+ fh = kzalloc(sizeof(*fh), GFP_KERNEL);
+ if (NULL == fh)
+ return -ENOMEM;
+
+ file->private_data = fh;
+ fh->port = port;
+
+ return 0;
+}
+
+static int fops_release(struct file *file)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_dev *dev = port->dev;
+
+ dprintk(DBGLVL_VBI, "%s()\n", __func__);
+
+ /* Shut device down on last close */
+ if (atomic_cmpxchg(&fh->v4l_reading, 1, 0) == 1) {
+ if (atomic_dec_return(&port->v4l_reader_count) == 0) {
+ /* stop vbi capture then cancel buffers */
+ saa7164_vbi_stop_streaming(port);
+ }
+ }
+
+ file->private_data = NULL;
+ kfree(fh);
+
+ return 0;
+}
+
+static struct
+saa7164_user_buffer *saa7164_vbi_next_buf(struct saa7164_port *port)
+{
+ struct saa7164_user_buffer *ubuf = NULL;
+ struct saa7164_dev *dev = port->dev;
+ u32 crc;
+
+ mutex_lock(&port->dmaqueue_lock);
+ if (!list_empty(&port->list_buf_used.list)) {
+ ubuf = list_first_entry(&port->list_buf_used.list,
+ struct saa7164_user_buffer, list);
+
+ if (crc_checking) {
+ crc = crc32(0, ubuf->data, ubuf->actual_size);
+ if (crc != ubuf->crc) {
+ printk(KERN_ERR "%s() ubuf %p crc became invalid, was 0x%x became 0x%x\n",
+ __func__,
+ ubuf, ubuf->crc, crc);
+ }
+ }
+
+ }
+ mutex_unlock(&port->dmaqueue_lock);
+
+ dprintk(DBGLVL_VBI, "%s() returns %p\n", __func__, ubuf);
+
+ return ubuf;
+}
+
+static ssize_t fops_read(struct file *file, char __user *buffer,
+ size_t count, loff_t *pos)
+{
+ struct saa7164_vbi_fh *fh = file->private_data;
+ struct saa7164_port *port = fh->port;
+ struct saa7164_user_buffer *ubuf = NULL;
+ struct saa7164_dev *dev = port->dev;
+ int ret = 0;
+ int rem, cnt;
+ u8 *p;
+
+ port->last_read_msecs_diff = port->last_read_msecs;
+ port->last_read_msecs = jiffies_to_msecs(jiffies);
+ port->last_read_msecs_diff = port->last_read_msecs -
+ port->last_read_msecs_diff;
+
+ saa7164_histogram_update(&port->read_interval,
+ port->last_read_msecs_diff);
+
+ if (*pos) {
+ printk(KERN_ERR "%s() ESPIPE\n", __func__);
+ return -ESPIPE;
+ }
+
+ if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
+ if (atomic_inc_return(&port->v4l_reader_count) == 1) {
+
+ if (saa7164_vbi_initialize(port) < 0) {
+ printk(KERN_ERR "%s() EINVAL\n", __func__);
+ return -EINVAL;
+ }
+
+ saa7164_vbi_start_streaming(port);
+ msleep(200);
+ }
+ }
+
+ /* blocking wait for buffer */
+ if ((file->f_flags & O_NONBLOCK) == 0) {
+ if (wait_event_interruptible(port->wait_read,
+ saa7164_vbi_next_buf(port))) {
+ printk(KERN_ERR "%s() ERESTARTSYS\n", __func__);
+ return -ERESTARTSYS;
+ }
+ }
+
+ /* Pull the first buffer from the used list */
+ ubuf = saa7164_vbi_next_buf(port);
+
+ while ((count > 0) && ubuf) {
+
+ /* set remaining bytes to copy */
+ rem = ubuf->actual_size - ubuf->pos;
+ cnt = rem > count ? count : rem;
+
+ p = ubuf->data + ubuf->pos;
+
+ dprintk(DBGLVL_VBI,
+ "%s() count=%d cnt=%d rem=%d buf=%p buf->pos=%d\n",
+ __func__, (int)count, cnt, rem, ubuf, ubuf->pos);
+
+ if (copy_to_user(buffer, p, cnt)) {
+ printk(KERN_ERR "%s() copy_to_user failed\n", __func__);
+ if (!ret) {
+ printk(KERN_ERR "%s() EFAULT\n", __func__);
+ ret = -EFAULT;
+ }
+ goto err;
+ }
+
+ ubuf->pos += cnt;
+ count -= cnt;
+ buffer += cnt;
+ ret += cnt;
+
+ if (ubuf->pos > ubuf->actual_size)
+ printk(KERN_ERR "read() pos > actual, huh?\n");
+
+ if (ubuf->pos == ubuf->actual_size) {
+
+ /* finished with current buffer, take next buffer */
+
+ /* Requeue the buffer on the free list */
+ ubuf->pos = 0;
+
+ mutex_lock(&port->dmaqueue_lock);
+ list_move_tail(&ubuf->list, &port->list_buf_free.list);
+ mutex_unlock(&port->dmaqueue_lock);
+
+ /* Dequeue next */
+ if ((file->f_flags & O_NONBLOCK) == 0) {
+ if (wait_event_interruptible(port->wait_read,
+ saa7164_vbi_next_buf(port))) {
+ break;
+ }
+ }
+ ubuf = saa7164_vbi_next_buf(port);
+ }
+ }
+err:
+ if (!ret && !ubuf) {
+ printk(KERN_ERR "%s() EAGAIN\n", __func__);
+ ret = -EAGAIN;
+ }
+
+ return ret;
+}
+
+static unsigned int fops_poll(struct file *file, poll_table *wait)
+{
+ struct saa7164_vbi_fh *fh = (struct saa7164_vbi_fh *)file->private_data;
+ struct saa7164_port *port = fh->port;
+ unsigned int mask = 0;
+
+ port->last_poll_msecs_diff = port->last_poll_msecs;
+ port->last_poll_msecs = jiffies_to_msecs(jiffies);
+ port->last_poll_msecs_diff = port->last_poll_msecs -
+ port->last_poll_msecs_diff;
+
+ saa7164_histogram_update(&port->poll_interval,
+ port->last_poll_msecs_diff);
+
+ if (!video_is_registered(port->v4l_device))
+ return -EIO;
+
+ if (atomic_cmpxchg(&fh->v4l_reading, 0, 1) == 0) {
+ if (atomic_inc_return(&port->v4l_reader_count) == 1) {
+ if (saa7164_vbi_initialize(port) < 0)
+ return -EINVAL;
+ saa7164_vbi_start_streaming(port);
+ msleep(200);
+ }
+ }
+
+ /* blocking wait for buffer */
+ if ((file->f_flags & O_NONBLOCK) == 0) {
+ if (wait_event_interruptible(port->wait_read,
+ saa7164_vbi_next_buf(port))) {
+ return -ERESTARTSYS;
+ }
+ }
+
+ /* Pull the first buffer from the used list */
+ if (!list_empty(&port->list_buf_used.list))
+ mask |= POLLIN | POLLRDNORM;
+
+ return mask;
+}
+static const struct v4l2_file_operations vbi_fops = {
+ .owner = THIS_MODULE,
+ .open = fops_open,
+ .release = fops_release,
+ .read = fops_read,
+ .poll = fops_poll,
+ .unlocked_ioctl = video_ioctl2,
+};
+
+static const struct v4l2_ioctl_ops vbi_ioctl_ops = {
+ .vidioc_s_std = vidioc_s_std,
+ .vidioc_g_std = vidioc_g_std,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .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_s_ctrl = vidioc_s_ctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .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_ext_ctrls = vidioc_g_ext_ctrls,
+ .vidioc_s_ext_ctrls = vidioc_s_ext_ctrls,
+ .vidioc_try_ext_ctrls = vidioc_try_ext_ctrls,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_fmt_vbi_cap = saa7164_vbi_fmt,
+ .vidioc_try_fmt_vbi_cap = saa7164_vbi_fmt,
+ .vidioc_s_fmt_vbi_cap = saa7164_vbi_fmt,
+};
+
+static struct video_device saa7164_vbi_template = {
+ .name = "saa7164",
+ .fops = &vbi_fops,
+ .ioctl_ops = &vbi_ioctl_ops,
+ .minor = -1,
+ .tvnorms = SAA7164_NORMS,
+};
+
+static struct video_device *saa7164_vbi_alloc(
+ struct saa7164_port *port,
+ struct pci_dev *pci,
+ struct video_device *template,
+ char *type)
+{
+ struct video_device *vfd;
+ struct saa7164_dev *dev = port->dev;
+
+ dprintk(DBGLVL_VBI, "%s()\n", __func__);
+
+ vfd = video_device_alloc();
+ if (NULL == vfd)
+ return NULL;
+
+ *vfd = *template;
+ snprintf(vfd->name, sizeof(vfd->name), "%s %s (%s)", dev->name,
+ type, saa7164_boards[dev->board].name);
+
+ vfd->v4l2_dev = &dev->v4l2_dev;
+ vfd->release = video_device_release;
+ return vfd;
+}
+
+int saa7164_vbi_register(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+ int result = -ENODEV;
+
+ dprintk(DBGLVL_VBI, "%s()\n", __func__);
+
+ if (port->type != SAA7164_MPEG_VBI)
+ BUG();
+
+ /* Sanity check that the PCI configuration space is active */
+ if (port->hwcfg.BARLocation == 0) {
+ printk(KERN_ERR "%s() failed "
+ "(errno = %d), NO PCI configuration\n",
+ __func__, result);
+ result = -ENOMEM;
+ goto failed;
+ }
+
+ /* Establish VBI defaults here */
+
+ /* Allocate and register the video device node */
+ port->v4l_device = saa7164_vbi_alloc(port,
+ dev->pci, &saa7164_vbi_template, "vbi");
+
+ if (!port->v4l_device) {
+ printk(KERN_INFO "%s: can't allocate vbi device\n",
+ dev->name);
+ result = -ENOMEM;
+ goto failed;
+ }
+
+ port->std = V4L2_STD_NTSC_M;
+ video_set_drvdata(port->v4l_device, port);
+ result = video_register_device(port->v4l_device,
+ VFL_TYPE_VBI, -1);
+ if (result < 0) {
+ printk(KERN_INFO "%s: can't register vbi device\n",
+ dev->name);
+ /* TODO: We're going to leak here if we don't dealloc
+ The buffers above. The unreg function can't deal wit it.
+ */
+ goto failed;
+ }
+
+ printk(KERN_INFO "%s: registered device vbi%d [vbi]\n",
+ dev->name, port->v4l_device->num);
+
+ /* Configure the hardware defaults */
+
+ result = 0;
+failed:
+ return result;
+}
+
+void saa7164_vbi_unregister(struct saa7164_port *port)
+{
+ struct saa7164_dev *dev = port->dev;
+
+ dprintk(DBGLVL_VBI, "%s(port=%d)\n", __func__, port->nr);
+
+ if (port->type != SAA7164_MPEG_VBI)
+ BUG();
+
+ if (port->v4l_device) {
+ if (port->v4l_device->minor != -1)
+ video_unregister_device(port->v4l_device);
+ else
+ video_device_release(port->v4l_device);
+
+ port->v4l_device = NULL;
+ }
+
+}
Code Review / kvmfornfv.git / blobdiff