diff options
Diffstat (limited to 'drivers/media/video/cx18/cx18-controls.c')
| -rw-r--r-- | drivers/media/video/cx18/cx18-controls.c | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/drivers/media/video/cx18/cx18-controls.c b/drivers/media/video/cx18/cx18-controls.c new file mode 100644 index 000000000000..da299ae61cff --- /dev/null +++ b/drivers/media/video/cx18/cx18-controls.c @@ -0,0 +1,306 @@ +/* + * cx18 ioctl control functions + * + * Derived from ivtv-controls.c + * + * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl> + * + * 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., 59 Temple Place, Suite 330, Boston, MA + * 02111-1307 USA + */ + +#include "cx18-driver.h" +#include "cx18-av-core.h" +#include "cx18-cards.h" +#include "cx18-ioctl.h" +#include "cx18-audio.h" +#include "cx18-i2c.h" +#include "cx18-mailbox.h" +#include "cx18-controls.h" + +static const u32 user_ctrls[] = { + V4L2_CID_USER_CLASS, + V4L2_CID_BRIGHTNESS, + V4L2_CID_CONTRAST, + V4L2_CID_SATURATION, + V4L2_CID_HUE, + V4L2_CID_AUDIO_VOLUME, + V4L2_CID_AUDIO_BALANCE, + V4L2_CID_AUDIO_BASS, + V4L2_CID_AUDIO_TREBLE, + V4L2_CID_AUDIO_MUTE, + V4L2_CID_AUDIO_LOUDNESS, + 0 +}; + +static const u32 *ctrl_classes[] = { + user_ctrls, + cx2341x_mpeg_ctrls, + NULL +}; + +static int cx18_queryctrl(struct cx18 *cx, struct v4l2_queryctrl *qctrl) +{ + const char *name; + + CX18_DEBUG_IOCTL("VIDIOC_QUERYCTRL(%08x)\n", qctrl->id); + + qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id); + if (qctrl->id == 0) + return -EINVAL; + + switch (qctrl->id) { + /* Standard V4L2 controls */ + case V4L2_CID_BRIGHTNESS: + case V4L2_CID_HUE: + case V4L2_CID_SATURATION: + case V4L2_CID_CONTRAST: + if (cx18_av_cmd(cx, VIDIOC_QUERYCTRL, qctrl)) + qctrl->flags |= V4L2_CTRL_FLAG_DISABLED; + return 0; + + case V4L2_CID_AUDIO_VOLUME: + case V4L2_CID_AUDIO_MUTE: + case V4L2_CID_AUDIO_BALANCE: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + case V4L2_CID_AUDIO_LOUDNESS: + if (cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_QUERYCTRL, qctrl)) + qctrl->flags |= V4L2_CTRL_FLAG_DISABLED; + return 0; + + default: + if (cx2341x_ctrl_query(&cx->params, qctrl)) + qctrl->flags |= V4L2_CTRL_FLAG_DISABLED; + return 0; + } + strncpy(qctrl->name, name, sizeof(qctrl->name) - 1); + qctrl->name[sizeof(qctrl->name) - 1] = 0; + return 0; +} + +static int cx18_querymenu(struct cx18 *cx, struct v4l2_querymenu *qmenu) +{ + struct v4l2_queryctrl qctrl; + + qctrl.id = qmenu->id; + cx18_queryctrl(cx, &qctrl); + return v4l2_ctrl_query_menu(qmenu, &qctrl, cx2341x_ctrl_get_menu(qmenu->id)); +} + +static int cx18_s_ctrl(struct cx18 *cx, struct v4l2_control *vctrl) +{ + s32 v = vctrl->value; + + CX18_DEBUG_IOCTL("VIDIOC_S_CTRL(%08x, %x)\n", vctrl->id, v); + + switch (vctrl->id) { + /* Standard V4L2 controls */ + case V4L2_CID_BRIGHTNESS: + case V4L2_CID_HUE: + case V4L2_CID_SATURATION: + case V4L2_CID_CONTRAST: + return cx18_av_cmd(cx, VIDIOC_S_CTRL, vctrl); + + case V4L2_CID_AUDIO_VOLUME: + case V4L2_CID_AUDIO_MUTE: + case V4L2_CID_AUDIO_BALANCE: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + case V4L2_CID_AUDIO_LOUDNESS: + return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_S_CTRL, vctrl); + + default: + CX18_DEBUG_IOCTL("invalid control %x\n", vctrl->id); + return -EINVAL; + } + return 0; +} + +static int cx18_g_ctrl(struct cx18 *cx, struct v4l2_control *vctrl) +{ + CX18_DEBUG_IOCTL("VIDIOC_G_CTRL(%08x)\n", vctrl->id); + + switch (vctrl->id) { + /* Standard V4L2 controls */ + case V4L2_CID_BRIGHTNESS: + case V4L2_CID_HUE: + case V4L2_CID_SATURATION: + case V4L2_CID_CONTRAST: + return cx18_av_cmd(cx, VIDIOC_G_CTRL, vctrl); + + case V4L2_CID_AUDIO_VOLUME: + case V4L2_CID_AUDIO_MUTE: + case V4L2_CID_AUDIO_BALANCE: + case V4L2_CID_AUDIO_BASS: + case V4L2_CID_AUDIO_TREBLE: + case V4L2_CID_AUDIO_LOUDNESS: + return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_G_CTRL, vctrl); + default: + CX18_DEBUG_IOCTL("invalid control %x\n", vctrl->id); + return -EINVAL; + } + return 0; +} + +static int cx18_setup_vbi_fmt(struct cx18 *cx, enum v4l2_mpeg_stream_vbi_fmt fmt) +{ + if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE)) + return -EINVAL; + if (atomic_read(&cx->capturing) > 0) + return -EBUSY; + + /* First try to allocate sliced VBI buffers if needed. */ + if (fmt && cx->vbi.sliced_mpeg_data[0] == NULL) { + int i; + + for (i = 0; i < CX18_VBI_FRAMES; i++) { + /* Yuck, hardcoded. Needs to be a define */ + cx->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL); + if (cx->vbi.sliced_mpeg_data[i] == NULL) { + while (--i >= 0) { + kfree(cx->vbi.sliced_mpeg_data[i]); + cx->vbi.sliced_mpeg_data[i] = NULL; + } + return -ENOMEM; + } + } + } + + cx->vbi.insert_mpeg = fmt; + + if (cx->vbi.insert_mpeg == 0) + return 0; + /* Need sliced data for mpeg insertion */ + if (get_service_set(cx->vbi.sliced_in) == 0) { + if (cx->is_60hz) + cx->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525; + else + cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625; + expand_service_set(cx->vbi.sliced_in, cx->is_50hz); + } + return 0; +} + +int cx18_control_ioctls(struct cx18 *cx, unsigned int cmd, void *arg) +{ + struct v4l2_control ctrl; + + switch (cmd) { + case VIDIOC_QUERYMENU: + CX18_DEBUG_IOCTL("VIDIOC_QUERYMENU\n"); + return cx18_querymenu(cx, arg); + + case VIDIOC_QUERYCTRL: + return cx18_queryctrl(cx, arg); + + case VIDIOC_S_CTRL: + return cx18_s_ctrl(cx, arg); + + case VIDIOC_G_CTRL: + return cx18_g_ctrl(cx, arg); + + case VIDIOC_S_EXT_CTRLS: + { + struct v4l2_ext_controls *c = arg; + + if (c->ctrl_class == V4L2_CTRL_CLASS_USER) { + int i; + int err = 0; + + for (i = 0; i < c->count; i++) { + ctrl.id = c->controls[i].id; + ctrl.value = c->controls[i].value; + err = cx18_s_ctrl(cx, &ctrl); + c->controls[i].value = ctrl.value; + if (err) { + c->error_idx = i; + break; + } + } + return err; + } + CX18_DEBUG_IOCTL("VIDIOC_S_EXT_CTRLS\n"); + if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) { + struct cx2341x_mpeg_params p = cx->params; + int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->capturing), arg, cmd); + + if (err) + return err; + + if (p.video_encoding != cx->params.video_encoding) { + int is_mpeg1 = p.video_encoding == + V4L2_MPEG_VIDEO_ENCODING_MPEG_1; + struct v4l2_format fmt; + + /* fix videodecoder resolution */ + fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + fmt.fmt.pix.width = cx->params.width / (is_mpeg1 ? 2 : 1); + fmt.fmt.pix.height = cx->params.height; + cx18_av_cmd(cx, VIDIOC_S_FMT, &fmt); + } + err = cx2341x_update(cx, cx18_api_func, &cx->params, &p); + if (!err && cx->params.stream_vbi_fmt != p.stream_vbi_fmt) + err = cx18_setup_vbi_fmt(cx, p.stream_vbi_fmt); + cx->params = p; + cx->dualwatch_stereo_mode = p.audio_properties & 0x0300; + cx18_audio_set_audio_clock_freq(cx, p.audio_properties & 0x03); + return err; + } + return -EINVAL; + } + + case VIDIOC_G_EXT_CTRLS: + { + struct v4l2_ext_controls *c = arg; + + if (c->ctrl_class == V4L2_CTRL_CLASS_USER) { + int i; + int err = 0; + + for (i = 0; i < c->count; i++) { + ctrl.id = c->controls[i].id; + ctrl.value = c->controls[i].value; + err = cx18_g_ctrl(cx, &ctrl); + c->controls[i].value = ctrl.value; + if (err) { + c->error_idx = i; + break; + } + } + return err; + } + CX18_DEBUG_IOCTL("VIDIOC_G_EXT_CTRLS\n"); + if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) + return cx2341x_ext_ctrls(&cx->params, 0, arg, cmd); + return -EINVAL; + } + + case VIDIOC_TRY_EXT_CTRLS: + { + struct v4l2_ext_controls *c = arg; + + CX18_DEBUG_IOCTL("VIDIOC_TRY_EXT_CTRLS\n"); + if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) + return cx2341x_ext_ctrls(&cx->params, + atomic_read(&cx->capturing), arg, cmd); + return -EINVAL; + } + + default: + return -EINVAL; + } + return 0; +} |