2 * cx18 ioctl control functions
4 * Derived from ivtv-controls.c
6 * Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
23 #include <linux/kernel.h>
25 #include "cx18-driver.h"
26 #include "cx18-cards.h"
27 #include "cx18-ioctl.h"
28 #include "cx18-audio.h"
29 #include "cx18-mailbox.h"
30 #include "cx18-controls.h"
32 /* Must be sorted from low to high control ID! */
33 static const u32 user_ctrls[] = {
39 V4L2_CID_AUDIO_VOLUME,
40 V4L2_CID_AUDIO_BALANCE,
42 V4L2_CID_AUDIO_TREBLE,
44 V4L2_CID_AUDIO_LOUDNESS,
48 static const u32 *ctrl_classes[] = {
54 int cx18_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
56 struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
59 qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
64 /* Standard V4L2 controls */
65 case V4L2_CID_USER_CLASS:
66 return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
67 case V4L2_CID_BRIGHTNESS:
69 case V4L2_CID_SATURATION:
70 case V4L2_CID_CONTRAST:
71 if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
72 qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
75 case V4L2_CID_AUDIO_VOLUME:
76 case V4L2_CID_AUDIO_MUTE:
77 case V4L2_CID_AUDIO_BALANCE:
78 case V4L2_CID_AUDIO_BASS:
79 case V4L2_CID_AUDIO_TREBLE:
80 case V4L2_CID_AUDIO_LOUDNESS:
81 if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
82 qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
86 if (cx2341x_ctrl_query(&cx->params, qctrl))
87 qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
90 strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
91 qctrl->name[sizeof(qctrl->name) - 1] = 0;
95 int cx18_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
97 struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
98 struct v4l2_queryctrl qctrl;
100 qctrl.id = qmenu->id;
101 cx18_queryctrl(file, fh, &qctrl);
102 return v4l2_ctrl_query_menu(qmenu, &qctrl,
103 cx2341x_ctrl_get_menu(&cx->params, qmenu->id));
106 static int cx18_try_ctrl(struct file *file, void *fh,
107 struct v4l2_ext_control *vctrl)
109 struct v4l2_queryctrl qctrl;
110 const char **menu_items = NULL;
113 qctrl.id = vctrl->id;
114 err = cx18_queryctrl(file, fh, &qctrl);
117 if (qctrl.type == V4L2_CTRL_TYPE_MENU)
118 menu_items = v4l2_ctrl_get_menu(qctrl.id);
119 return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
122 static int cx18_s_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
125 /* Standard V4L2 controls */
126 case V4L2_CID_BRIGHTNESS:
128 case V4L2_CID_SATURATION:
129 case V4L2_CID_CONTRAST:
130 return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
132 case V4L2_CID_AUDIO_VOLUME:
133 case V4L2_CID_AUDIO_MUTE:
134 case V4L2_CID_AUDIO_BALANCE:
135 case V4L2_CID_AUDIO_BASS:
136 case V4L2_CID_AUDIO_TREBLE:
137 case V4L2_CID_AUDIO_LOUDNESS:
138 return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
141 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
147 static int cx18_g_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
150 /* Standard V4L2 controls */
151 case V4L2_CID_BRIGHTNESS:
153 case V4L2_CID_SATURATION:
154 case V4L2_CID_CONTRAST:
155 return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
157 case V4L2_CID_AUDIO_VOLUME:
158 case V4L2_CID_AUDIO_MUTE:
159 case V4L2_CID_AUDIO_BALANCE:
160 case V4L2_CID_AUDIO_BASS:
161 case V4L2_CID_AUDIO_TREBLE:
162 case V4L2_CID_AUDIO_LOUDNESS:
163 return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
166 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
172 static int cx18_setup_vbi_fmt(struct cx18 *cx,
173 enum v4l2_mpeg_stream_vbi_fmt fmt,
174 enum v4l2_mpeg_stream_type type)
176 if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
178 if (atomic_read(&cx->ana_capturing) > 0)
181 if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV ||
182 !(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS ||
183 type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD ||
184 type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) {
185 /* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */
186 cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
187 CX18_DEBUG_INFO("disabled insertion of sliced VBI data into "
188 "the MPEG stream\n");
192 /* Allocate sliced VBI buffers if needed. */
193 if (cx->vbi.sliced_mpeg_data[0] == NULL) {
196 for (i = 0; i < CX18_VBI_FRAMES; i++) {
197 cx->vbi.sliced_mpeg_data[i] =
198 kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
199 if (cx->vbi.sliced_mpeg_data[i] == NULL) {
201 kfree(cx->vbi.sliced_mpeg_data[i]);
202 cx->vbi.sliced_mpeg_data[i] = NULL;
204 cx->vbi.insert_mpeg =
205 V4L2_MPEG_STREAM_VBI_FMT_NONE;
206 CX18_WARN("Unable to allocate buffers for "
207 "sliced VBI data insertion\n");
213 cx->vbi.insert_mpeg = fmt;
214 CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,"
215 "when sliced VBI is enabled\n");
218 * If our current settings have no lines set for capture, store a valid,
219 * default set of service lines to capture, in our current settings.
221 if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
223 cx->vbi.sliced_in->service_set =
224 V4L2_SLICED_CAPTION_525;
226 cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
227 cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
232 int cx18_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
234 struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
235 struct v4l2_control ctrl;
237 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
241 for (i = 0; i < c->count; i++) {
242 ctrl.id = c->controls[i].id;
243 ctrl.value = c->controls[i].value;
244 err = cx18_g_ctrl(cx, &ctrl);
245 c->controls[i].value = ctrl.value;
253 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
254 return cx2341x_ext_ctrls(&cx->params, 0, c, VIDIOC_G_EXT_CTRLS);
258 int cx18_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
260 struct cx18_open_id *id = fh;
261 struct cx18 *cx = id->cx;
263 struct v4l2_control ctrl;
265 ret = v4l2_prio_check(&cx->prio, &id->prio);
269 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
273 for (i = 0; i < c->count; i++) {
274 ctrl.id = c->controls[i].id;
275 ctrl.value = c->controls[i].value;
276 err = cx18_s_ctrl(cx, &ctrl);
277 c->controls[i].value = ctrl.value;
285 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
286 static u32 freqs[3] = { 44100, 48000, 32000 };
287 struct cx18_api_func_private priv;
288 struct cx2341x_mpeg_params p = cx->params;
289 int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->ana_capturing),
290 c, VIDIOC_S_EXT_CTRLS);
296 if (p.video_encoding != cx->params.video_encoding) {
297 int is_mpeg1 = p.video_encoding ==
298 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
299 struct v4l2_format fmt;
301 /* fix videodecoder resolution */
302 fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
303 fmt.fmt.pix.width = cx->params.width
304 / (is_mpeg1 ? 2 : 1);
305 fmt.fmt.pix.height = cx->params.height;
306 v4l2_subdev_call(cx->sd_av, video, s_fmt, &fmt);
309 priv.s = &cx->streams[id->type];
310 err = cx2341x_update(&priv, cx18_api_func, &cx->params, &p);
312 (cx->params.stream_vbi_fmt != p.stream_vbi_fmt ||
313 cx->params.stream_type != p.stream_type))
314 err = cx18_setup_vbi_fmt(cx, p.stream_vbi_fmt,
317 cx->dualwatch_stereo_mode = p.audio_properties & 0x0300;
318 idx = p.audio_properties & 0x03;
319 /* The audio clock of the digitizer must match the codec sample
320 rate otherwise you get some very strange effects. */
321 if (idx < ARRAY_SIZE(freqs))
322 cx18_call_all(cx, audio, s_clock_freq, freqs[idx]);
328 int cx18_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
330 struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
332 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
336 for (i = 0; i < c->count; i++) {
337 err = cx18_try_ctrl(file, fh, &c->controls[i]);
345 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
346 return cx2341x_ext_ctrls(&cx->params,
347 atomic_read(&cx->ana_capturing),
348 c, VIDIOC_TRY_EXT_CTRLS);