V4L/DVB (5345): ivtv driver for Conexant cx23416/cx23415 MPEG encoder/decoder

It took three core maintainers, over four years of work, eight new i2c
modules, eleven new V4L2 ioctls, three new DVB video ioctls, a Sliced
VBI API, a new MPEG encoder API, an enhanced DVB video MPEG decoding
API, major YUV/OSD contributions from Ian and John, web/wiki/svn/trac
support from Axel Thimm, (hardware) support from Hauppauge, support and
assistance from the v4l-dvb people and the many, many users of ivtv to
finally make it possible to merge this driver into the kernel.
Thank you all!

Signed-off-by: Kevin Thayer <nufan_wfk@yahoo.com>
Signed-off-by: Chris Kennedy <c@groovy.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: John P Harvey <john.p.harvey@btinternet.com>
Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 303 insertions, 0 deletions

diff --git a/drivers/media/video/ivtv/ivtv-controls.c b/drivers/media/video/ivtv/ivtv-controls.c
new file mode 100644
index 000000000000..7a876c3e5b19
--- /dev/null
+++ b/drivers/media/video/ivtv/ivtv-controls.c
@@ -0,0 +1,303 @@
+/*
+    ioctl control functions
+    Copyright (C) 2003-2004  Kevin Thayer <nufan_wfk at yahoo.com>
+    Copyright (C) 2005-2007  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 "ivtv-driver.h"
+#include "ivtv-cards.h"
+#include "ivtv-ioctl.h"
+#include "ivtv-audio.h"
+#include "ivtv-i2c.h"
+#include "ivtv-mailbox.h"
+#include "ivtv-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 ivtv_queryctrl(struct ivtv *itv, struct v4l2_queryctrl *qctrl)
+{
+        const char *name;
+
+        IVTV_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 (itv->video_dec_func(itv, 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 (ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_QUERYCTRL, qctrl))
+                        qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
+                return 0;
+
+        default:
+                if (cx2341x_ctrl_query(&itv->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 ivtv_querymenu(struct ivtv *itv, struct v4l2_querymenu *qmenu)
+{
+        struct v4l2_queryctrl qctrl;
+
+        qctrl.id = qmenu->id;
+        ivtv_queryctrl(itv, &qctrl);
+        return v4l2_ctrl_query_menu(qmenu, &qctrl, cx2341x_ctrl_get_menu(qmenu->id));
+}
+
+static int ivtv_s_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
+{
+        s32 v = vctrl->value;
+
+        IVTV_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 itv->video_dec_func(itv, 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 ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_S_CTRL, vctrl);
+
+        default:
+                IVTV_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static int ivtv_g_ctrl(struct ivtv *itv, struct v4l2_control *vctrl)
+{
+        IVTV_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 itv->video_dec_func(itv, 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 ivtv_i2c_hw(itv, itv->card->hw_audio_ctrl, VIDIOC_G_CTRL, vctrl);
+        default:
+                IVTV_DEBUG_IOCTL("invalid control %x\n", vctrl->id);
+                return -EINVAL;
+        }
+        return 0;
+}
+
+static int ivtv_setup_vbi_fmt(struct ivtv *itv, enum v4l2_mpeg_stream_vbi_fmt fmt)
+{
+        if (!(itv->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
+                return -EINVAL;
+        if (atomic_read(&itv->capturing) > 0)
+                return -EBUSY;
+
+        /* First try to allocate sliced VBI buffers if needed. */
+        if (fmt && itv->vbi.sliced_mpeg_data[0] == NULL) {
+                int i;
+
+                for (i = 0; i < IVTV_VBI_FRAMES; i++) {
+                        /* Yuck, hardcoded. Needs to be a define */
+                        itv->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
+                        if (itv->vbi.sliced_mpeg_data[i] == NULL) {
+                                while (--i >= 0) {
+                                        kfree(itv->vbi.sliced_mpeg_data[i]);
+                                        itv->vbi.sliced_mpeg_data[i] = NULL;
+                                }
+                                return -ENOMEM;
+                        }
+                }
+        }
+
+        itv->vbi.insert_mpeg = fmt;
+
+        if (itv->vbi.insert_mpeg == 0) {
+                return 0;
+        }
+        /* Need sliced data for mpeg insertion */
+        if (get_service_set(itv->vbi.sliced_in) == 0) {
+                if (itv->is_60hz)
+                        itv->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
+                else
+                        itv->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
+                expand_service_set(itv->vbi.sliced_in, itv->is_50hz);
+        }
+        return 0;
+}
+
+int ivtv_control_ioctls(struct ivtv *itv, unsigned int cmd, void *arg)
+{
+        struct v4l2_control ctrl;
+
+        switch (cmd) {
+        case VIDIOC_QUERYMENU:
+                IVTV_DEBUG_IOCTL("VIDIOC_QUERYMENU\n");
+                return ivtv_querymenu(itv, arg);
+
+        case VIDIOC_QUERYCTRL:
+                return ivtv_queryctrl(itv, arg);
+
+        case VIDIOC_S_CTRL:
+                return ivtv_s_ctrl(itv, arg);
+
+        case VIDIOC_G_CTRL:
+                return ivtv_g_ctrl(itv, 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 = ivtv_s_ctrl(itv, &ctrl);
+                                c->controls[i].value = ctrl.value;
+                                if (err) {
+                                        c->error_idx = i;
+                                        break;
+                                }
+                        }
+                        return err;
+                }
+                IVTV_DEBUG_IOCTL("VIDIOC_S_EXT_CTRLS\n");
+                if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
+                        struct cx2341x_mpeg_params p = itv->params;
+                        int err = cx2341x_ext_ctrls(&p, arg, cmd);
+
+                        if (err)
+                                return err;
+
+                        if (p.video_encoding != itv->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 = itv->params.width / (is_mpeg1 ? 2 : 1);
+                                fmt.fmt.pix.height = itv->params.height;
+                                itv->video_dec_func(itv, VIDIOC_S_FMT, &fmt);
+                        }
+                        err = cx2341x_update(itv, ivtv_api_func, &itv->params, &p);
+                        if (!err && itv->params.stream_vbi_fmt != p.stream_vbi_fmt) {
+                                err = ivtv_setup_vbi_fmt(itv, p.stream_vbi_fmt);
+                        }
+                        itv->params = p;
+                        itv->dualwatch_stereo_mode = p.audio_properties & 0x0300;
+                        ivtv_audio_set_audio_clock_freq(itv, 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 = ivtv_g_ctrl(itv, &ctrl);
+                                c->controls[i].value = ctrl.value;
+                                if (err) {
+                                        c->error_idx = i;
+                                        break;
+                                }
+                        }
+                        return err;
+                }
+                IVTV_DEBUG_IOCTL("VIDIOC_G_EXT_CTRLS\n");
+                if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
+                        return cx2341x_ext_ctrls(&itv->params, arg, cmd);
+                return -EINVAL;
+        }
+
+        case VIDIOC_TRY_EXT_CTRLS:
+        {
+                struct v4l2_ext_controls *c = arg;
+
+                IVTV_DEBUG_IOCTL("VIDIOC_TRY_EXT_CTRLS\n");
+                if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
+                        return cx2341x_ext_ctrls(&itv->params, arg, cmd);
+                return -EINVAL;
+        }
+
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}