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>
24 #include <linux/slab.h>
26 #include "cx18-driver.h"
27 #include "cx18-cards.h"
28 #include "cx18-ioctl.h"
29 #include "cx18-audio.h"
30 #include "cx18-mailbox.h"
31 #include "cx18-controls.h"
33 /* Must be sorted from low to high control ID! */
34 static const u32 user_ctrls[] = {
40 V4L2_CID_AUDIO_VOLUME,
41 V4L2_CID_AUDIO_BALANCE,
43 V4L2_CID_AUDIO_TREBLE,
45 V4L2_CID_AUDIO_LOUDNESS,
49 static const u32 *ctrl_classes[] = {
55 int cx18_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
57 struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
60 qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
65 /* Standard V4L2 controls */
66 case V4L2_CID_USER_CLASS:
67 return v4l2_ctrl_query_fill(qctrl, 0, 0, 0, 0);
68 case V4L2_CID_BRIGHTNESS:
70 case V4L2_CID_SATURATION:
71 case V4L2_CID_CONTRAST:
72 if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
73 qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
76 case V4L2_CID_AUDIO_VOLUME:
77 case V4L2_CID_AUDIO_MUTE:
78 case V4L2_CID_AUDIO_BALANCE:
79 case V4L2_CID_AUDIO_BASS:
80 case V4L2_CID_AUDIO_TREBLE:
81 case V4L2_CID_AUDIO_LOUDNESS:
82 if (v4l2_subdev_call(cx->sd_av, core, queryctrl, qctrl))
83 qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
87 if (cx2341x_ctrl_query(&cx->params, qctrl))
88 qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
91 strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
92 qctrl->name[sizeof(qctrl->name) - 1] = 0;
96 int cx18_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
98 struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
99 struct v4l2_queryctrl qctrl;
101 qctrl.id = qmenu->id;
102 cx18_queryctrl(file, fh, &qctrl);
103 return v4l2_ctrl_query_menu(qmenu, &qctrl,
104 cx2341x_ctrl_get_menu(&cx->params, qmenu->id));
107 static int cx18_try_ctrl(struct file *file, void *fh,
108 struct v4l2_ext_control *vctrl)
110 struct v4l2_queryctrl qctrl;
111 const char * const *menu_items = NULL;
114 qctrl.id = vctrl->id;
115 err = cx18_queryctrl(file, fh, &qctrl);
118 if (qctrl.type == V4L2_CTRL_TYPE_MENU)
119 menu_items = v4l2_ctrl_get_menu(qctrl.id);
120 return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
123 static int cx18_s_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
126 /* Standard V4L2 controls */
127 case V4L2_CID_BRIGHTNESS:
129 case V4L2_CID_SATURATION:
130 case V4L2_CID_CONTRAST:
131 return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
133 case V4L2_CID_AUDIO_VOLUME:
134 case V4L2_CID_AUDIO_MUTE:
135 case V4L2_CID_AUDIO_BALANCE:
136 case V4L2_CID_AUDIO_BASS:
137 case V4L2_CID_AUDIO_TREBLE:
138 case V4L2_CID_AUDIO_LOUDNESS:
139 return v4l2_subdev_call(cx->sd_av, core, s_ctrl, vctrl);
142 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
148 static int cx18_g_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
151 /* Standard V4L2 controls */
152 case V4L2_CID_BRIGHTNESS:
154 case V4L2_CID_SATURATION:
155 case V4L2_CID_CONTRAST:
156 return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
158 case V4L2_CID_AUDIO_VOLUME:
159 case V4L2_CID_AUDIO_MUTE:
160 case V4L2_CID_AUDIO_BALANCE:
161 case V4L2_CID_AUDIO_BASS:
162 case V4L2_CID_AUDIO_TREBLE:
163 case V4L2_CID_AUDIO_LOUDNESS:
164 return v4l2_subdev_call(cx->sd_av, core, g_ctrl, vctrl);
167 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
173 static int cx18_setup_vbi_fmt(struct cx18 *cx,
174 enum v4l2_mpeg_stream_vbi_fmt fmt,
175 enum v4l2_mpeg_stream_type type)
177 if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
179 if (atomic_read(&cx->ana_capturing) > 0)
182 if (fmt != V4L2_MPEG_STREAM_VBI_FMT_IVTV ||
183 !(type == V4L2_MPEG_STREAM_TYPE_MPEG2_PS ||
184 type == V4L2_MPEG_STREAM_TYPE_MPEG2_DVD ||
185 type == V4L2_MPEG_STREAM_TYPE_MPEG2_SVCD)) {
186 /* Only IVTV fmt VBI insertion & only MPEG-2 PS type streams */
187 cx->vbi.insert_mpeg = V4L2_MPEG_STREAM_VBI_FMT_NONE;
188 CX18_DEBUG_INFO("disabled insertion of sliced VBI data into "
189 "the MPEG stream\n");
193 /* Allocate sliced VBI buffers if needed. */
194 if (cx->vbi.sliced_mpeg_data[0] == NULL) {
197 for (i = 0; i < CX18_VBI_FRAMES; i++) {
198 cx->vbi.sliced_mpeg_data[i] =
199 kmalloc(CX18_SLICED_MPEG_DATA_BUFSZ, GFP_KERNEL);
200 if (cx->vbi.sliced_mpeg_data[i] == NULL) {
202 kfree(cx->vbi.sliced_mpeg_data[i]);
203 cx->vbi.sliced_mpeg_data[i] = NULL;
205 cx->vbi.insert_mpeg =
206 V4L2_MPEG_STREAM_VBI_FMT_NONE;
207 CX18_WARN("Unable to allocate buffers for "
208 "sliced VBI data insertion\n");
214 cx->vbi.insert_mpeg = fmt;
215 CX18_DEBUG_INFO("enabled insertion of sliced VBI data into the MPEG PS,"
216 "when sliced VBI is enabled\n");
219 * If our current settings have no lines set for capture, store a valid,
220 * default set of service lines to capture, in our current settings.
222 if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
224 cx->vbi.sliced_in->service_set =
225 V4L2_SLICED_CAPTION_525;
227 cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
228 cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
233 int cx18_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
235 struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
236 struct v4l2_control ctrl;
238 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
242 for (i = 0; i < c->count; i++) {
243 ctrl.id = c->controls[i].id;
244 ctrl.value = c->controls[i].value;
245 err = cx18_g_ctrl(cx, &ctrl);
246 c->controls[i].value = ctrl.value;
254 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
255 return cx2341x_ext_ctrls(&cx->params, 0, c, VIDIOC_G_EXT_CTRLS);
259 int cx18_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
261 struct cx18_open_id *id = fh;
262 struct cx18 *cx = id->cx;
264 struct v4l2_control ctrl;
266 ret = v4l2_prio_check(&cx->prio, id->prio);
270 if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
274 for (i = 0; i < c->count; i++) {
275 ctrl.id = c->controls[i].id;
276 ctrl.value = c->controls[i].value;
277 err = cx18_s_ctrl(cx, &ctrl);
278 c->controls[i].value = ctrl.value;
286 if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
287 static u32 freqs[3] = { 44100, 48000, 32000 };
288 struct cx18_api_func_private priv;
289 struct cx2341x_mpeg_params p = cx->params;
290 int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->ana_capturing),
291 c, VIDIOC_S_EXT_CTRLS);
297 if (p.video_encoding != cx->params.video_encoding) {
298 int is_mpeg1 = p.video_encoding ==
299 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
300 struct v4l2_mbus_framefmt fmt;
302 /* fix videodecoder resolution */
303 fmt.width = cx->params.width / (is_mpeg1 ? 2 : 1);
304 fmt.height = cx->params.height;
305 fmt.code = V4L2_MBUS_FMT_FIXED;
306 v4l2_subdev_call(cx->sd_av, video, s_mbus_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);