V4L/DVB (8771): cx18: Remove redundant struct cx18_queue length member.
[linux-2.6] / drivers / media / video / cx18 / cx18-controls.c
1 /*
2  *  cx18 ioctl control functions
3  *
4  *  Derived from ivtv-controls.c
5  *
6  *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
7  *
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.
12  *
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.
17  *
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
21  *  02111-1307  USA
22  */
23
24 #include "cx18-driver.h"
25 #include "cx18-av-core.h"
26 #include "cx18-cards.h"
27 #include "cx18-ioctl.h"
28 #include "cx18-audio.h"
29 #include "cx18-i2c.h"
30 #include "cx18-mailbox.h"
31 #include "cx18-controls.h"
32
33 static const u32 user_ctrls[] = {
34         V4L2_CID_USER_CLASS,
35         V4L2_CID_BRIGHTNESS,
36         V4L2_CID_CONTRAST,
37         V4L2_CID_SATURATION,
38         V4L2_CID_HUE,
39         V4L2_CID_AUDIO_VOLUME,
40         V4L2_CID_AUDIO_BALANCE,
41         V4L2_CID_AUDIO_BASS,
42         V4L2_CID_AUDIO_TREBLE,
43         V4L2_CID_AUDIO_MUTE,
44         V4L2_CID_AUDIO_LOUDNESS,
45         0
46 };
47
48 static const u32 *ctrl_classes[] = {
49         user_ctrls,
50         cx2341x_mpeg_ctrls,
51         NULL
52 };
53
54 int cx18_queryctrl(struct file *file, void *fh, struct v4l2_queryctrl *qctrl)
55 {
56         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
57         const char *name;
58
59         qctrl->id = v4l2_ctrl_next(ctrl_classes, qctrl->id);
60         if (qctrl->id == 0)
61                 return -EINVAL;
62
63         switch (qctrl->id) {
64         /* Standard V4L2 controls */
65         case V4L2_CID_BRIGHTNESS:
66         case V4L2_CID_HUE:
67         case V4L2_CID_SATURATION:
68         case V4L2_CID_CONTRAST:
69                 if (cx18_av_cmd(cx, VIDIOC_QUERYCTRL, qctrl))
70                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
71                 return 0;
72
73         case V4L2_CID_AUDIO_VOLUME:
74         case V4L2_CID_AUDIO_MUTE:
75         case V4L2_CID_AUDIO_BALANCE:
76         case V4L2_CID_AUDIO_BASS:
77         case V4L2_CID_AUDIO_TREBLE:
78         case V4L2_CID_AUDIO_LOUDNESS:
79                 if (cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_QUERYCTRL, qctrl))
80                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
81                 return 0;
82
83         default:
84                 if (cx2341x_ctrl_query(&cx->params, qctrl))
85                         qctrl->flags |= V4L2_CTRL_FLAG_DISABLED;
86                 return 0;
87         }
88         strncpy(qctrl->name, name, sizeof(qctrl->name) - 1);
89         qctrl->name[sizeof(qctrl->name) - 1] = 0;
90         return 0;
91 }
92
93 int cx18_querymenu(struct file *file, void *fh, struct v4l2_querymenu *qmenu)
94 {
95         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
96         struct v4l2_queryctrl qctrl;
97
98         qctrl.id = qmenu->id;
99         cx18_queryctrl(file, fh, &qctrl);
100         return v4l2_ctrl_query_menu(qmenu, &qctrl,
101                         cx2341x_ctrl_get_menu(&cx->params, qmenu->id));
102 }
103
104 static int cx18_try_ctrl(struct file *file, void *fh,
105                                         struct v4l2_ext_control *vctrl)
106 {
107         struct v4l2_queryctrl qctrl;
108         const char **menu_items = NULL;
109         int err;
110
111         qctrl.id = vctrl->id;
112         err = cx18_queryctrl(file, fh, &qctrl);
113         if (err)
114                 return err;
115         if (qctrl.type == V4L2_CTRL_TYPE_MENU)
116                 menu_items = v4l2_ctrl_get_menu(qctrl.id);
117         return v4l2_ctrl_check(vctrl, &qctrl, menu_items);
118 }
119
120 static int cx18_s_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
121 {
122         switch (vctrl->id) {
123                 /* Standard V4L2 controls */
124         case V4L2_CID_BRIGHTNESS:
125         case V4L2_CID_HUE:
126         case V4L2_CID_SATURATION:
127         case V4L2_CID_CONTRAST:
128                 return cx18_av_cmd(cx, VIDIOC_S_CTRL, vctrl);
129
130         case V4L2_CID_AUDIO_VOLUME:
131         case V4L2_CID_AUDIO_MUTE:
132         case V4L2_CID_AUDIO_BALANCE:
133         case V4L2_CID_AUDIO_BASS:
134         case V4L2_CID_AUDIO_TREBLE:
135         case V4L2_CID_AUDIO_LOUDNESS:
136                 return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_S_CTRL, vctrl);
137
138         default:
139                 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
140                 return -EINVAL;
141         }
142         return 0;
143 }
144
145 static int cx18_g_ctrl(struct cx18 *cx, struct v4l2_control *vctrl)
146 {
147         switch (vctrl->id) {
148                 /* Standard V4L2 controls */
149         case V4L2_CID_BRIGHTNESS:
150         case V4L2_CID_HUE:
151         case V4L2_CID_SATURATION:
152         case V4L2_CID_CONTRAST:
153                 return cx18_av_cmd(cx, VIDIOC_G_CTRL, vctrl);
154
155         case V4L2_CID_AUDIO_VOLUME:
156         case V4L2_CID_AUDIO_MUTE:
157         case V4L2_CID_AUDIO_BALANCE:
158         case V4L2_CID_AUDIO_BASS:
159         case V4L2_CID_AUDIO_TREBLE:
160         case V4L2_CID_AUDIO_LOUDNESS:
161                 return cx18_i2c_hw(cx, cx->card->hw_audio_ctrl, VIDIOC_G_CTRL, vctrl);
162         default:
163                 CX18_DEBUG_IOCTL("invalid control 0x%x\n", vctrl->id);
164                 return -EINVAL;
165         }
166         return 0;
167 }
168
169 static int cx18_setup_vbi_fmt(struct cx18 *cx, enum v4l2_mpeg_stream_vbi_fmt fmt)
170 {
171         if (!(cx->v4l2_cap & V4L2_CAP_SLICED_VBI_CAPTURE))
172                 return -EINVAL;
173         if (atomic_read(&cx->ana_capturing) > 0)
174                 return -EBUSY;
175
176         /* First try to allocate sliced VBI buffers if needed. */
177         if (fmt && cx->vbi.sliced_mpeg_data[0] == NULL) {
178                 int i;
179
180                 for (i = 0; i < CX18_VBI_FRAMES; i++) {
181                         /* Yuck, hardcoded. Needs to be a define */
182                         cx->vbi.sliced_mpeg_data[i] = kmalloc(2049, GFP_KERNEL);
183                         if (cx->vbi.sliced_mpeg_data[i] == NULL) {
184                                 while (--i >= 0) {
185                                         kfree(cx->vbi.sliced_mpeg_data[i]);
186                                         cx->vbi.sliced_mpeg_data[i] = NULL;
187                                 }
188                                 return -ENOMEM;
189                         }
190                 }
191         }
192
193         cx->vbi.insert_mpeg = fmt;
194
195         if (cx->vbi.insert_mpeg == 0)
196                 return 0;
197         /* Need sliced data for mpeg insertion */
198         if (cx18_get_service_set(cx->vbi.sliced_in) == 0) {
199                 if (cx->is_60hz)
200                         cx->vbi.sliced_in->service_set = V4L2_SLICED_CAPTION_525;
201                 else
202                         cx->vbi.sliced_in->service_set = V4L2_SLICED_WSS_625;
203                 cx18_expand_service_set(cx->vbi.sliced_in, cx->is_50hz);
204         }
205         return 0;
206 }
207
208 int cx18_g_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
209 {
210         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
211         struct v4l2_control ctrl;
212
213         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
214                 int i;
215                 int err = 0;
216
217                 for (i = 0; i < c->count; i++) {
218                         ctrl.id = c->controls[i].id;
219                         ctrl.value = c->controls[i].value;
220                         err = cx18_g_ctrl(cx, &ctrl);
221                         c->controls[i].value = ctrl.value;
222                         if (err) {
223                                 c->error_idx = i;
224                                 break;
225                         }
226                 }
227                 return err;
228         }
229         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
230                 return cx2341x_ext_ctrls(&cx->params, 0, c, VIDIOC_G_EXT_CTRLS);
231         return -EINVAL;
232 }
233
234 int cx18_s_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
235 {
236         struct cx18_open_id *id = fh;
237         struct cx18 *cx = id->cx;
238         int ret;
239         struct v4l2_control ctrl;
240
241         ret = v4l2_prio_check(&cx->prio, &id->prio);
242         if (ret)
243                 return ret;
244
245         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
246                 int i;
247                 int err = 0;
248
249                 for (i = 0; i < c->count; i++) {
250                         ctrl.id = c->controls[i].id;
251                         ctrl.value = c->controls[i].value;
252                         err = cx18_s_ctrl(cx, &ctrl);
253                         c->controls[i].value = ctrl.value;
254                         if (err) {
255                                 c->error_idx = i;
256                                 break;
257                         }
258                 }
259                 return err;
260         }
261         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG) {
262                 struct cx2341x_mpeg_params p = cx->params;
263                 int err = cx2341x_ext_ctrls(&p, atomic_read(&cx->ana_capturing),
264                                                 c, VIDIOC_S_EXT_CTRLS);
265
266                 if (err)
267                         return err;
268
269                 if (p.video_encoding != cx->params.video_encoding) {
270                         int is_mpeg1 = p.video_encoding ==
271                                                 V4L2_MPEG_VIDEO_ENCODING_MPEG_1;
272                         struct v4l2_format fmt;
273
274                         /* fix videodecoder resolution */
275                         fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
276                         fmt.fmt.pix.width = cx->params.width
277                                                 / (is_mpeg1 ? 2 : 1);
278                         fmt.fmt.pix.height = cx->params.height;
279                         cx18_av_cmd(cx, VIDIOC_S_FMT, &fmt);
280                 }
281                 err = cx2341x_update(cx, cx18_api_func, &cx->params, &p);
282                 if (!err && cx->params.stream_vbi_fmt != p.stream_vbi_fmt)
283                         err = cx18_setup_vbi_fmt(cx, p.stream_vbi_fmt);
284                 cx->params = p;
285                 cx->dualwatch_stereo_mode = p.audio_properties & 0x0300;
286                 cx18_audio_set_audio_clock_freq(cx, p.audio_properties & 0x03);
287                 return err;
288         }
289         return -EINVAL;
290 }
291
292 int cx18_try_ext_ctrls(struct file *file, void *fh, struct v4l2_ext_controls *c)
293 {
294         struct cx18 *cx = ((struct cx18_open_id *)fh)->cx;
295
296         if (c->ctrl_class == V4L2_CTRL_CLASS_USER) {
297                 int i;
298                 int err = 0;
299
300                 for (i = 0; i < c->count; i++) {
301                         err = cx18_try_ctrl(file, fh, &c->controls[i]);
302                         if (err) {
303                                 c->error_idx = i;
304                                 break;
305                         }
306                 }
307                 return err;
308         }
309         if (c->ctrl_class == V4L2_CTRL_CLASS_MPEG)
310                 return cx2341x_ext_ctrls(&cx->params,
311                                                 atomic_read(&cx->ana_capturing),
312                                                 c, VIDIOC_TRY_EXT_CTRLS);
313         return -EINVAL;
314 }