mirror of https://gitee.com/openkylin/linux.git
122 lines
3.1 KiB
C
122 lines
3.1 KiB
C
/*
|
|
*
|
|
*
|
|
* 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
|
|
*
|
|
*/
|
|
|
|
#include "pvrusb2.h"
|
|
#include "pvrusb2-util.h"
|
|
#include "pvrusb2-tuner.h"
|
|
#include "pvrusb2-hdw-internal.h"
|
|
#include "pvrusb2-debug.h"
|
|
#include <linux/videodev2.h>
|
|
#include <media/tuner.h>
|
|
#include <media/v4l2-common.h>
|
|
|
|
|
|
struct pvr2_tuner_handler {
|
|
struct pvr2_hdw *hdw;
|
|
struct pvr2_i2c_client *client;
|
|
struct pvr2_i2c_handler i2c_handler;
|
|
int type_update_fl;
|
|
};
|
|
|
|
|
|
static void set_type(struct pvr2_tuner_handler *ctxt)
|
|
{
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
struct tuner_setup setup;
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c tuner set_type(%d)",hdw->tuner_type);
|
|
if (((int)(hdw->tuner_type)) < 0) return;
|
|
|
|
setup.addr = ADDR_UNSET;
|
|
setup.type = hdw->tuner_type;
|
|
setup.mode_mask = T_RADIO | T_ANALOG_TV;
|
|
/* We may really want mode_mask to be T_ANALOG_TV for now */
|
|
pvr2_i2c_client_cmd(ctxt->client,TUNER_SET_TYPE_ADDR,&setup);
|
|
ctxt->type_update_fl = 0;
|
|
}
|
|
|
|
|
|
static int tuner_check(struct pvr2_tuner_handler *ctxt)
|
|
{
|
|
struct pvr2_hdw *hdw = ctxt->hdw;
|
|
if (hdw->tuner_updated) ctxt->type_update_fl = !0;
|
|
return ctxt->type_update_fl != 0;
|
|
}
|
|
|
|
|
|
static void tuner_update(struct pvr2_tuner_handler *ctxt)
|
|
{
|
|
if (ctxt->type_update_fl) set_type(ctxt);
|
|
}
|
|
|
|
|
|
static void pvr2_tuner_detach(struct pvr2_tuner_handler *ctxt)
|
|
{
|
|
ctxt->client->handler = NULL;
|
|
kfree(ctxt);
|
|
}
|
|
|
|
|
|
static unsigned int pvr2_tuner_describe(struct pvr2_tuner_handler *ctxt,char *buf,unsigned int cnt)
|
|
{
|
|
return scnprintf(buf,cnt,"handler: pvrusb2-tuner");
|
|
}
|
|
|
|
|
|
static const struct pvr2_i2c_handler_functions tuner_funcs = {
|
|
.detach = (void (*)(void *))pvr2_tuner_detach,
|
|
.check = (int (*)(void *))tuner_check,
|
|
.update = (void (*)(void *))tuner_update,
|
|
.describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_tuner_describe,
|
|
};
|
|
|
|
|
|
int pvr2_i2c_tuner_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
|
|
{
|
|
struct pvr2_tuner_handler *ctxt;
|
|
if (cp->handler) return 0;
|
|
|
|
ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
|
|
if (!ctxt) return 0;
|
|
|
|
ctxt->i2c_handler.func_data = ctxt;
|
|
ctxt->i2c_handler.func_table = &tuner_funcs;
|
|
ctxt->type_update_fl = !0;
|
|
ctxt->client = cp;
|
|
ctxt->hdw = hdw;
|
|
cp->handler = &ctxt->i2c_handler;
|
|
pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x tuner 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: ***
|
|
*/
|