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
23 #include "pvrusb2-audio.h"
24 #include "pvrusb2-hdw-internal.h"
25 #include "pvrusb2-debug.h"
26 #include <linux/videodev2.h>
27 #include <media/msp3400.h>
28 #include <media/v4l2-common.h>
30 struct pvr2_msp3400_handler {
32 struct pvr2_i2c_client *client;
33 struct pvr2_i2c_handler i2c_handler;
34 struct pvr2_audio_stat astat;
35 unsigned long stale_mask;
39 /* This function selects the correct audio input source */
40 static void set_stereo(struct pvr2_msp3400_handler *ctxt)
42 struct pvr2_hdw *hdw = ctxt->hdw;
43 struct v4l2_routing route;
45 pvr2_trace(PVR2_TRACE_CHIPS,"i2c msp3400 v4l2 set_stereo");
47 if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
49 memset(&vt,0,sizeof(vt));
50 vt.audmode = hdw->audiomode_val;
51 pvr2_i2c_client_cmd(ctxt->client,VIDIOC_S_TUNER,&vt);
54 route.input = MSP_INPUT_DEFAULT;
55 route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
56 switch (hdw->input_val) {
57 case PVR2_CVAL_INPUT_TV:
59 case PVR2_CVAL_INPUT_RADIO:
60 /* Assume that msp34xx also handle FM decoding, in which case
61 we're still using the tuner. */
62 /* HV: actually it is more likely to be the SCART2 input if
63 the ivtv experience is any indication. */
64 route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
65 MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
67 case PVR2_CVAL_INPUT_SVIDEO:
68 case PVR2_CVAL_INPUT_COMPOSITE:
70 route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
71 MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
74 pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
78 static int check_stereo(struct pvr2_msp3400_handler *ctxt)
80 struct pvr2_hdw *hdw = ctxt->hdw;
81 return (hdw->input_dirty ||
82 hdw->audiomode_dirty);
86 struct pvr2_msp3400_ops {
87 void (*update)(struct pvr2_msp3400_handler *);
88 int (*check)(struct pvr2_msp3400_handler *);
92 static const struct pvr2_msp3400_ops msp3400_ops[] = {
93 { .update = set_stereo, .check = check_stereo},
97 static int msp3400_check(struct pvr2_msp3400_handler *ctxt)
102 for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]);
105 if (ctxt->stale_mask & msk) continue;
106 if (msp3400_ops[idx].check(ctxt)) {
107 ctxt->stale_mask |= msk;
110 return ctxt->stale_mask != 0;
114 static void msp3400_update(struct pvr2_msp3400_handler *ctxt)
119 for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]);
122 if (!(ctxt->stale_mask & msk)) continue;
123 ctxt->stale_mask &= ~msk;
124 msp3400_ops[idx].update(ctxt);
129 /* This reads back the current signal type */
130 static int get_audio_status(struct pvr2_msp3400_handler *ctxt)
132 struct v4l2_tuner vt;
135 memset(&vt,0,sizeof(vt));
136 stat = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_G_TUNER,&vt);
137 if (stat < 0) return stat;
139 ctxt->hdw->flag_stereo = (vt.audmode & V4L2_TUNER_MODE_STEREO) != 0;
140 ctxt->hdw->flag_bilingual =
141 (vt.audmode & V4L2_TUNER_MODE_LANG2) != 0;
146 static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt)
148 ctxt->client->handler = NULL;
149 ctxt->hdw->audio_stat = NULL;
154 static unsigned int pvr2_msp3400_describe(struct pvr2_msp3400_handler *ctxt,
155 char *buf,unsigned int cnt)
157 return scnprintf(buf,cnt,"handler: pvrusb2-audio v4l2");
161 const static struct pvr2_i2c_handler_functions msp3400_funcs = {
162 .detach = (void (*)(void *))pvr2_msp3400_detach,
163 .check = (int (*)(void *))msp3400_check,
164 .update = (void (*)(void *))msp3400_update,
165 .describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_msp3400_describe,
169 int pvr2_i2c_msp3400_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
171 struct pvr2_msp3400_handler *ctxt;
172 if (hdw->audio_stat) return 0;
173 if (cp->handler) return 0;
175 ctxt = kmalloc(sizeof(*ctxt),GFP_KERNEL);
177 memset(ctxt,0,sizeof(*ctxt));
179 ctxt->i2c_handler.func_data = ctxt;
180 ctxt->i2c_handler.func_table = &msp3400_funcs;
183 ctxt->astat.ctxt = ctxt;
184 ctxt->astat.status = (int (*)(void *))get_audio_status;
185 ctxt->astat.detach = (void (*)(void *))pvr2_msp3400_detach;
186 ctxt->stale_mask = (1 << (sizeof(msp3400_ops)/
187 sizeof(msp3400_ops[0]))) - 1;
188 cp->handler = &ctxt->i2c_handler;
189 hdw->audio_stat = &ctxt->astat;
190 pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x msp3400 V4L2 handler set up",
197 Stuff for Emacs to see, in order to encourage consistent editing style:
198 *** Local Variables: ***
200 *** fill-column: 70 ***
202 *** c-basic-offset: 8 ***