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/drivers/media/video/pvrusb2/pvrusb2-cx2584x-v4l.c

https://bitbucket.org/ndreys/linux-sunxi
C | 166 lines | 108 code | 19 blank | 39 comment | 4 complexity | ff745aa2c6adacfca889f23395a35482 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1/*
  2 *
  3 *
  4 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
  5 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
  6 *
  7 *  This program is free software; you can redistribute it and/or modify
  8 *  it under the terms of the GNU General Public License as published by
  9 *  the Free Software Foundation; either version 2 of the License
 10 *
 11 *  This program is distributed in the hope that it will be useful,
 12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 14 *  GNU General Public License for more details.
 15 *
 16 *  You should have received a copy of the GNU General Public License
 17 *  along with this program; if not, write to the Free Software
 18 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 19 *
 20 */
 21
 22/*
 23
 24   This source file is specifically designed to interface with the
 25   cx2584x, in kernels 2.6.16 or newer.
 26
 27*/
 28
 29#include "pvrusb2-cx2584x-v4l.h"
 30#include "pvrusb2-video-v4l.h"
 31
 32
 33#include "pvrusb2-hdw-internal.h"
 34#include "pvrusb2-debug.h"
 35#include <media/cx25840.h>
 36#include <linux/videodev2.h>
 37#include <media/v4l2-common.h>
 38#include <linux/errno.h>
 39
 40
 41struct routing_scheme_item {
 42	int vid;
 43	int aud;
 44};
 45
 46struct routing_scheme {
 47	const struct routing_scheme_item *def;
 48	unsigned int cnt;
 49};
 50
 51static const struct routing_scheme_item routing_scheme0[] = {
 52	[PVR2_CVAL_INPUT_TV] = {
 53		.vid = CX25840_COMPOSITE7,
 54		.aud = CX25840_AUDIO8,
 55	},
 56	[PVR2_CVAL_INPUT_RADIO] = { /* Treat the same as composite */
 57		.vid = CX25840_COMPOSITE3,
 58		.aud = CX25840_AUDIO_SERIAL,
 59	},
 60	[PVR2_CVAL_INPUT_COMPOSITE] = {
 61		.vid = CX25840_COMPOSITE3,
 62		.aud = CX25840_AUDIO_SERIAL,
 63	},
 64	[PVR2_CVAL_INPUT_SVIDEO] = {
 65		.vid = CX25840_SVIDEO1,
 66		.aud = CX25840_AUDIO_SERIAL,
 67	},
 68};
 69
 70static const struct routing_scheme routing_def0 = {
 71	.def = routing_scheme0,
 72	.cnt = ARRAY_SIZE(routing_scheme0),
 73};
 74
 75/* Specific to gotview device */
 76static const struct routing_scheme_item routing_schemegv[] = {
 77	[PVR2_CVAL_INPUT_TV] = {
 78		.vid = CX25840_COMPOSITE2,
 79		.aud = CX25840_AUDIO5,
 80	},
 81	[PVR2_CVAL_INPUT_RADIO] = {
 82		/* line-in is used for radio and composite.  A GPIO is
 83		   used to switch between the two choices. */
 84		.vid = CX25840_COMPOSITE1,
 85		.aud = CX25840_AUDIO_SERIAL,
 86	},
 87	[PVR2_CVAL_INPUT_COMPOSITE] = {
 88		.vid = CX25840_COMPOSITE1,
 89		.aud = CX25840_AUDIO_SERIAL,
 90	},
 91	[PVR2_CVAL_INPUT_SVIDEO] = {
 92		.vid = (CX25840_SVIDEO_LUMA3|CX25840_SVIDEO_CHROMA4),
 93		.aud = CX25840_AUDIO_SERIAL,
 94	},
 95};
 96
 97static const struct routing_scheme routing_defgv = {
 98	.def = routing_schemegv,
 99	.cnt = ARRAY_SIZE(routing_schemegv),
100};
101
102/* Specific to grabster av400 device */
103static const struct routing_scheme_item routing_schemeav400[] = {
104	[PVR2_CVAL_INPUT_COMPOSITE] = {
105		.vid = CX25840_COMPOSITE1,
106		.aud = CX25840_AUDIO_SERIAL,
107	},
108	[PVR2_CVAL_INPUT_SVIDEO] = {
109		.vid = (CX25840_SVIDEO_LUMA2|CX25840_SVIDEO_CHROMA4),
110		.aud = CX25840_AUDIO_SERIAL,
111	},
112};
113
114static const struct routing_scheme routing_defav400 = {
115	.def = routing_schemeav400,
116	.cnt = ARRAY_SIZE(routing_schemeav400),
117};
118
119static const struct routing_scheme *routing_schemes[] = {
120	[PVR2_ROUTING_SCHEME_HAUPPAUGE] = &routing_def0,
121	[PVR2_ROUTING_SCHEME_GOTVIEW] = &routing_defgv,
122	[PVR2_ROUTING_SCHEME_AV400] = &routing_defav400,
123};
124
125void pvr2_cx25840_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
126{
127	pvr2_trace(PVR2_TRACE_CHIPS, "subdev cx2584x update...");
128	if (hdw->input_dirty || hdw->force_dirty) {
129		enum cx25840_video_input vid_input;
130		enum cx25840_audio_input aud_input;
131		const struct routing_scheme *sp;
132		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
133
134		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
135			routing_schemes[sid] : NULL;
136		if ((sp == NULL) ||
137		    (hdw->input_val < 0) ||
138		    (hdw->input_val >= sp->cnt)) {
139			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
140				   "*** WARNING *** subdev cx2584x set_input:"
141				   " Invalid routing scheme (%u)"
142				   " and/or input (%d)",
143				   sid, hdw->input_val);
144			return;
145		}
146		vid_input = sp->def[hdw->input_val].vid;
147		aud_input = sp->def[hdw->input_val].aud;
148		pvr2_trace(PVR2_TRACE_CHIPS,
149			   "subdev cx2584x set_input vid=0x%x aud=0x%x",
150			   vid_input, aud_input);
151		sd->ops->video->s_routing(sd, (u32)vid_input, 0, 0);
152		sd->ops->audio->s_routing(sd, (u32)aud_input, 0, 0);
153	}
154}
155
156
157
158/*
159  Stuff for Emacs to see, in order to encourage consistent editing style:
160  *** Local Variables: ***
161  *** mode: c ***
162  *** fill-column: 70 ***
163  *** tab-width: 8 ***
164  *** c-basic-offset: 8 ***
165  *** End: ***
166  */