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,0);
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 ***