4 * Copyright (C) 2005 Mike Isely <isely@pobox.com>
5 * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
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
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.
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
24 This source file is specifically designed to interface with the
29 #include "pvrusb2-wm8775.h"
30 #include "pvrusb2-i2c-cmd-v4l2.h"
33 #include "pvrusb2-hdw-internal.h"
34 #include "pvrusb2-debug.h"
35 #include <linux/videodev2.h>
36 #include <media/v4l2-common.h>
37 #include <linux/errno.h>
38 #include <linux/slab.h>
40 struct pvr2_v4l_wm8775
{
41 struct pvr2_i2c_handler handler
;
42 struct pvr2_i2c_client
*client
;
44 unsigned long stale_mask
;
48 static void set_input(struct pvr2_v4l_wm8775
*ctxt
)
50 struct v4l2_routing route
;
51 struct pvr2_hdw
*hdw
= ctxt
->hdw
;
53 memset(&route
,0,sizeof(route
));
55 switch(hdw
->input_val
) {
56 case PVR2_CVAL_INPUT_RADIO
:
60 /* All other cases just use the second input */
64 pvr2_trace(PVR2_TRACE_CHIPS
,"i2c wm8775 set_input(val=%d route=0x%x)",
65 hdw
->input_val
,route
.input
);
67 pvr2_i2c_client_cmd(ctxt
->client
,VIDIOC_INT_S_AUDIO_ROUTING
,&route
);
70 static int check_input(struct pvr2_v4l_wm8775
*ctxt
)
72 struct pvr2_hdw
*hdw
= ctxt
->hdw
;
73 return hdw
->input_dirty
!= 0;
77 struct pvr2_v4l_wm8775_ops
{
78 void (*update
)(struct pvr2_v4l_wm8775
*);
79 int (*check
)(struct pvr2_v4l_wm8775
*);
83 static const struct pvr2_v4l_wm8775_ops wm8775_ops
[] = {
84 { .update
= set_input
, .check
= check_input
},
88 static unsigned int wm8775_describe(struct pvr2_v4l_wm8775
*ctxt
,
89 char *buf
,unsigned int cnt
)
91 return scnprintf(buf
,cnt
,"handler: pvrusb2-wm8775");
95 static void wm8775_detach(struct pvr2_v4l_wm8775
*ctxt
)
97 ctxt
->client
->handler
= NULL
;
102 static int wm8775_check(struct pvr2_v4l_wm8775
*ctxt
)
107 for (idx
= 0; idx
< ARRAY_SIZE(wm8775_ops
); idx
++) {
109 if (ctxt
->stale_mask
& msk
) continue;
110 if (wm8775_ops
[idx
].check(ctxt
)) {
111 ctxt
->stale_mask
|= msk
;
114 return ctxt
->stale_mask
!= 0;
118 static void wm8775_update(struct pvr2_v4l_wm8775
*ctxt
)
123 for (idx
= 0; idx
< ARRAY_SIZE(wm8775_ops
); idx
++) {
125 if (!(ctxt
->stale_mask
& msk
)) continue;
126 ctxt
->stale_mask
&= ~msk
;
127 wm8775_ops
[idx
].update(ctxt
);
132 static const struct pvr2_i2c_handler_functions hfuncs
= {
133 .detach
= (void (*)(void *))wm8775_detach
,
134 .check
= (int (*)(void *))wm8775_check
,
135 .update
= (void (*)(void *))wm8775_update
,
136 .describe
= (unsigned int (*)(void *,char *,unsigned int))wm8775_describe
,
140 int pvr2_i2c_wm8775_setup(struct pvr2_hdw
*hdw
,struct pvr2_i2c_client
*cp
)
142 struct pvr2_v4l_wm8775
*ctxt
;
144 if (cp
->handler
) return 0;
146 ctxt
= kzalloc(sizeof(*ctxt
),GFP_KERNEL
);
149 ctxt
->handler
.func_data
= ctxt
;
150 ctxt
->handler
.func_table
= &hfuncs
;
153 ctxt
->stale_mask
= (1 << ARRAY_SIZE(wm8775_ops
)) - 1;
154 cp
->handler
= &ctxt
->handler
;
155 pvr2_trace(PVR2_TRACE_CHIPS
,"i2c 0x%x wm8775 V4L2 handler set up",
164 Stuff for Emacs to see, in order to encourage consistent editing style:
165 *** Local Variables: ***
167 *** fill-column: 70 ***
169 *** c-basic-offset: 8 ***