5 * Copyright (C) 2005 Mike Isely <isely@pobox.com>
6 * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
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
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 This source file is specifically designed to interface with the
26 cx2584x, in kernels 2.6.16 or newer.
30 #include "pvrusb2-cx2584x-v4l.h"
31 #include "pvrusb2-video-v4l.h"
32 #include "pvrusb2-i2c-cmd-v4l2.h"
35 #include "pvrusb2-hdw-internal.h"
36 #include "pvrusb2-debug.h"
37 #include <media/cx25840.h>
38 #include <linux/videodev2.h>
39 #include <media/v4l2-common.h>
40 #include <linux/errno.h>
41 #include <linux/slab.h>
43 struct pvr2_v4l_cx2584x
{
44 struct pvr2_i2c_handler handler
;
45 struct pvr2_decoder_ctrl ctrl
;
46 struct pvr2_i2c_client
*client
;
48 unsigned long stale_mask
;
52 static void set_input(struct pvr2_v4l_cx2584x
*ctxt
)
54 struct pvr2_hdw
*hdw
= ctxt
->hdw
;
55 struct v4l2_routing route
;
56 enum cx25840_video_input vid_input
;
57 enum cx25840_audio_input aud_input
;
59 memset(&route
,0,sizeof(route
));
61 switch(hdw
->input_val
) {
62 case PVR2_CVAL_INPUT_TV
:
63 vid_input
= CX25840_COMPOSITE7
;
64 aud_input
= CX25840_AUDIO8
;
66 case PVR2_CVAL_INPUT_COMPOSITE
:
67 vid_input
= CX25840_COMPOSITE3
;
68 aud_input
= CX25840_AUDIO_SERIAL
;
70 case PVR2_CVAL_INPUT_SVIDEO
:
71 vid_input
= CX25840_SVIDEO1
;
72 aud_input
= CX25840_AUDIO_SERIAL
;
74 case PVR2_CVAL_INPUT_RADIO
:
76 // Just set it to be composite input for now...
77 vid_input
= CX25840_COMPOSITE3
;
78 aud_input
= CX25840_AUDIO_SERIAL
;
82 pvr2_trace(PVR2_TRACE_CHIPS
,"i2c cx2584x set_input vid=0x%x aud=0x%x",
84 route
.input
= (u32
)vid_input
;
85 pvr2_i2c_client_cmd(ctxt
->client
,VIDIOC_INT_S_VIDEO_ROUTING
,&route
);
86 route
.input
= (u32
)aud_input
;
87 pvr2_i2c_client_cmd(ctxt
->client
,VIDIOC_INT_S_AUDIO_ROUTING
,&route
);
91 static int check_input(struct pvr2_v4l_cx2584x
*ctxt
)
93 struct pvr2_hdw
*hdw
= ctxt
->hdw
;
94 return hdw
->input_dirty
!= 0;
98 static void set_audio(struct pvr2_v4l_cx2584x
*ctxt
)
101 struct pvr2_hdw
*hdw
= ctxt
->hdw
;
103 pvr2_trace(PVR2_TRACE_CHIPS
,"i2c cx2584x set_audio %d",
105 switch (hdw
->srate_val
) {
107 case V4L2_MPEG_AUDIO_SAMPLING_FREQ_48000
:
110 case V4L2_MPEG_AUDIO_SAMPLING_FREQ_44100
:
113 case V4L2_MPEG_AUDIO_SAMPLING_FREQ_32000
:
117 pvr2_i2c_client_cmd(ctxt
->client
,VIDIOC_INT_AUDIO_CLOCK_FREQ
,&val
);
121 static int check_audio(struct pvr2_v4l_cx2584x
*ctxt
)
123 struct pvr2_hdw
*hdw
= ctxt
->hdw
;
124 return hdw
->srate_dirty
!= 0;
128 struct pvr2_v4l_cx2584x_ops
{
129 void (*update
)(struct pvr2_v4l_cx2584x
*);
130 int (*check
)(struct pvr2_v4l_cx2584x
*);
134 static const struct pvr2_v4l_cx2584x_ops decoder_ops
[] = {
135 { .update
= set_input
, .check
= check_input
},
136 { .update
= set_audio
, .check
= check_audio
},
140 static void decoder_detach(struct pvr2_v4l_cx2584x
*ctxt
)
142 ctxt
->client
->handler
= NULL
;
143 ctxt
->hdw
->decoder_ctrl
= NULL
;
148 static int decoder_check(struct pvr2_v4l_cx2584x
*ctxt
)
153 for (idx
= 0; idx
< sizeof(decoder_ops
)/sizeof(decoder_ops
[0]);
156 if (ctxt
->stale_mask
& msk
) continue;
157 if (decoder_ops
[idx
].check(ctxt
)) {
158 ctxt
->stale_mask
|= msk
;
161 return ctxt
->stale_mask
!= 0;
165 static void decoder_update(struct pvr2_v4l_cx2584x
*ctxt
)
170 for (idx
= 0; idx
< sizeof(decoder_ops
)/sizeof(decoder_ops
[0]);
173 if (!(ctxt
->stale_mask
& msk
)) continue;
174 ctxt
->stale_mask
&= ~msk
;
175 decoder_ops
[idx
].update(ctxt
);
180 static void decoder_enable(struct pvr2_v4l_cx2584x
*ctxt
,int fl
)
182 pvr2_trace(PVR2_TRACE_CHIPS
,"i2c cx25840 decoder_enable(%d)",fl
);
183 pvr2_v4l2_cmd_stream(ctxt
->client
,fl
);
187 static int decoder_detect(struct pvr2_i2c_client
*cp
)
190 /* Attempt to query the decoder - let's see if it will answer */
191 struct v4l2_queryctrl qc
;
193 memset(&qc
,0,sizeof(qc
));
195 qc
.id
= V4L2_CID_BRIGHTNESS
;
197 ret
= pvr2_i2c_client_cmd(cp
,VIDIOC_QUERYCTRL
,&qc
);
198 return ret
== 0; /* Return true if it answered */
202 static int decoder_is_tuned(struct pvr2_v4l_cx2584x
*ctxt
)
204 struct v4l2_tuner vt
;
207 memset(&vt
,0,sizeof(vt
));
208 ret
= pvr2_i2c_client_cmd(ctxt
->client
,VIDIOC_G_TUNER
,&vt
);
209 if (ret
< 0) return -EINVAL
;
210 return vt
.signal
? 1 : 0;
214 static unsigned int decoder_describe(struct pvr2_v4l_cx2584x
*ctxt
,
215 char *buf
,unsigned int cnt
)
217 return scnprintf(buf
,cnt
,"handler: pvrusb2-cx2584x-v4l");
221 static void decoder_reset(struct pvr2_v4l_cx2584x
*ctxt
)
224 ret
= pvr2_i2c_client_cmd(ctxt
->client
,VIDIOC_INT_RESET
,NULL
);
225 pvr2_trace(PVR2_TRACE_CHIPS
,"i2c cx25840 decoder_reset (ret=%d)",ret
);
229 const static struct pvr2_i2c_handler_functions hfuncs
= {
230 .detach
= (void (*)(void *))decoder_detach
,
231 .check
= (int (*)(void *))decoder_check
,
232 .update
= (void (*)(void *))decoder_update
,
233 .describe
= (unsigned int (*)(void *,char *,unsigned int))decoder_describe
,
237 int pvr2_i2c_cx2584x_v4l_setup(struct pvr2_hdw
*hdw
,
238 struct pvr2_i2c_client
*cp
)
240 struct pvr2_v4l_cx2584x
*ctxt
;
242 if (hdw
->decoder_ctrl
) return 0;
243 if (cp
->handler
) return 0;
244 if (!decoder_detect(cp
)) return 0;
246 ctxt
= kmalloc(sizeof(*ctxt
),GFP_KERNEL
);
248 memset(ctxt
,0,sizeof(*ctxt
));
250 ctxt
->handler
.func_data
= ctxt
;
251 ctxt
->handler
.func_table
= &hfuncs
;
252 ctxt
->ctrl
.ctxt
= ctxt
;
253 ctxt
->ctrl
.detach
= (void (*)(void *))decoder_detach
;
254 ctxt
->ctrl
.enable
= (void (*)(void *,int))decoder_enable
;
255 ctxt
->ctrl
.tuned
= (int (*)(void *))decoder_is_tuned
;
256 ctxt
->ctrl
.force_reset
= (void (*)(void*))decoder_reset
;
259 ctxt
->stale_mask
= (1 << (sizeof(decoder_ops
)/
260 sizeof(decoder_ops
[0]))) - 1;
261 hdw
->decoder_ctrl
= &ctxt
->ctrl
;
262 cp
->handler
= &ctxt
->handler
;
263 pvr2_trace(PVR2_TRACE_CHIPS
,"i2c 0x%x cx2584x V4L2 handler set up",
272 Stuff for Emacs to see, in order to encourage consistent editing style:
273 *** Local Variables: ***
275 *** fill-column: 70 ***
277 *** c-basic-offset: 8 ***