mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 08:53:41 +00:00
ca545f7c39
Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
173 lines
3.9 KiB
C
173 lines
3.9 KiB
C
/*
|
|
*
|
|
* $Id$
|
|
*
|
|
* Copyright (C) 2005 Mike Isely <isely@pobox.com>
|
|
* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
/*
|
|
|
|
This source file is specifically designed to interface with the
|
|
wm8775.
|
|
|
|
*/
|
|
|
|
#include "pvrusb2-wm8775.h"
|
|
#include "pvrusb2-i2c-cmd-v4l2.h"
|
|
|
|
|
|
#include "pvrusb2-hdw-internal.h"
|
|
#include "pvrusb2-debug.h"
|
|
#include <linux/videodev2.h>
|
|
#include <media/v4l2-common.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/slab.h>
|
|
|
|
struct pvr2_v4l_wm8775 {
|
|
struct pvr2_i2c_handler handler;
|
|
struct pvr2_i2c_client *client;
|
|
struct pvr2_hdw *hdw;
|
|
unsigned long stale_mask;
|
|
};
|
|
|
|
|
|
static void set_input(struct pvr2_v4l_wm8775 *ctxt)
|
|
{
|
|
struct v4l2_routing route;
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
|
|
memset(&route,0,sizeof(route));
|
|
|
|
switch(hdw->input_val) {
|
|
case PVR2_CVAL_INPUT_RADIO:
|
|
route.input = 1;
|
|
break;
|
|
default:
|
|
/* All other cases just use the second input */
|
|
route.input = 2;
|
|
break;
|
|
}
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c wm8775 set_input(val=%d route=0x%x)",
|
|
hdw->input_val,route.input);
|
|
|
|
pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
|
|
}
|
|
|
|
static int check_input(struct pvr2_v4l_wm8775 *ctxt)
|
|
{
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
return hdw->input_dirty != 0;
|
|
}
|
|
|
|
|
|
struct pvr2_v4l_wm8775_ops {
|
|
void (*update)(struct pvr2_v4l_wm8775 *);
|
|
int (*check)(struct pvr2_v4l_wm8775 *);
|
|
};
|
|
|
|
|
|
static const struct pvr2_v4l_wm8775_ops wm8775_ops[] = {
|
|
{ .update = set_input, .check = check_input},
|
|
};
|
|
|
|
|
|
static unsigned int wm8775_describe(struct pvr2_v4l_wm8775 *ctxt,
|
|
char *buf,unsigned int cnt)
|
|
{
|
|
return scnprintf(buf,cnt,"handler: pvrusb2-wm8775");
|
|
}
|
|
|
|
|
|
static void wm8775_detach(struct pvr2_v4l_wm8775 *ctxt)
|
|
{
|
|
ctxt->client->handler = NULL;
|
|
kfree(ctxt);
|
|
}
|
|
|
|
|
|
static int wm8775_check(struct pvr2_v4l_wm8775 *ctxt)
|
|
{
|
|
unsigned long msk;
|
|
unsigned int idx;
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(wm8775_ops); idx++) {
|
|
msk = 1 << idx;
|
|
if (ctxt->stale_mask & msk) continue;
|
|
if (wm8775_ops[idx].check(ctxt)) {
|
|
ctxt->stale_mask |= msk;
|
|
}
|
|
}
|
|
return ctxt->stale_mask != 0;
|
|
}
|
|
|
|
|
|
static void wm8775_update(struct pvr2_v4l_wm8775 *ctxt)
|
|
{
|
|
unsigned long msk;
|
|
unsigned int idx;
|
|
|
|
for (idx = 0; idx < ARRAY_SIZE(wm8775_ops); idx++) {
|
|
msk = 1 << idx;
|
|
if (!(ctxt->stale_mask & msk)) continue;
|
|
ctxt->stale_mask &= ~msk;
|
|
wm8775_ops[idx].update(ctxt);
|
|
}
|
|
}
|
|
|
|
|
|
static const struct pvr2_i2c_handler_functions hfuncs = {
|
|
.detach = (void (*)(void *))wm8775_detach,
|
|
.check = (int (*)(void *))wm8775_check,
|
|
.update = (void (*)(void *))wm8775_update,
|
|
.describe = (unsigned int (*)(void *,char *,unsigned int))wm8775_describe,
|
|
};
|
|
|
|
|
|
int pvr2_i2c_wm8775_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
|
|
{
|
|
struct pvr2_v4l_wm8775 *ctxt;
|
|
|
|
if (cp->handler) return 0;
|
|
|
|
ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
|
|
if (!ctxt) return 0;
|
|
|
|
ctxt->handler.func_data = ctxt;
|
|
ctxt->handler.func_table = &hfuncs;
|
|
ctxt->client = cp;
|
|
ctxt->hdw = hdw;
|
|
ctxt->stale_mask = (1 << ARRAY_SIZE(wm8775_ops)) - 1;
|
|
cp->handler = &ctxt->handler;
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x wm8775 V4L2 handler set up",
|
|
cp->client->addr);
|
|
return !0;
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
Stuff for Emacs to see, in order to encourage consistent editing style:
|
|
*** Local Variables: ***
|
|
*** mode: c ***
|
|
*** fill-column: 70 ***
|
|
*** tab-width: 8 ***
|
|
*** c-basic-offset: 8 ***
|
|
*** End: ***
|
|
*/
|