forked from Minki/linux
64723b3018
Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
/*
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*
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*
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* Copyright (C) 2005 Mike Isely <isely@pobox.com>
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* Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "pvrusb2.h"
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#include "pvrusb2-util.h"
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#include "pvrusb2-tuner.h"
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#include "pvrusb2-hdw-internal.h"
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#include "pvrusb2-debug.h"
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#include <linux/videodev2.h>
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#include <media/tuner.h>
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#include <media/v4l2-common.h>
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struct pvr2_tuner_handler {
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struct pvr2_hdw *hdw;
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struct pvr2_i2c_client *client;
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struct pvr2_i2c_handler i2c_handler;
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int type_update_fl;
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};
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static void set_type(struct pvr2_tuner_handler *ctxt)
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{
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struct pvr2_hdw *hdw = ctxt->hdw;
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struct tuner_setup setup;
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pvr2_trace(PVR2_TRACE_CHIPS,"i2c tuner set_type(%d)",hdw->tuner_type);
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if (((int)(hdw->tuner_type)) < 0) return;
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setup.addr = ADDR_UNSET;
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setup.type = hdw->tuner_type;
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setup.mode_mask = T_RADIO | T_ANALOG_TV;
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/* We may really want mode_mask to be T_ANALOG_TV for now */
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pvr2_i2c_client_cmd(ctxt->client,TUNER_SET_TYPE_ADDR,&setup);
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ctxt->type_update_fl = 0;
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}
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static int tuner_check(struct pvr2_tuner_handler *ctxt)
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{
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struct pvr2_hdw *hdw = ctxt->hdw;
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if (hdw->tuner_updated) ctxt->type_update_fl = !0;
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return ctxt->type_update_fl != 0;
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}
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static void tuner_update(struct pvr2_tuner_handler *ctxt)
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{
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if (ctxt->type_update_fl) set_type(ctxt);
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}
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static void pvr2_tuner_detach(struct pvr2_tuner_handler *ctxt)
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{
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ctxt->client->handler = NULL;
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kfree(ctxt);
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}
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static unsigned int pvr2_tuner_describe(struct pvr2_tuner_handler *ctxt,char *buf,unsigned int cnt)
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{
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return scnprintf(buf,cnt,"handler: pvrusb2-tuner");
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}
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static const struct pvr2_i2c_handler_functions tuner_funcs = {
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.detach = (void (*)(void *))pvr2_tuner_detach,
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.check = (int (*)(void *))tuner_check,
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.update = (void (*)(void *))tuner_update,
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.describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_tuner_describe,
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};
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int pvr2_i2c_tuner_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
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{
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struct pvr2_tuner_handler *ctxt;
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if (cp->handler) return 0;
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ctxt = kzalloc(sizeof(*ctxt),GFP_KERNEL);
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if (!ctxt) return 0;
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ctxt->i2c_handler.func_data = ctxt;
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ctxt->i2c_handler.func_table = &tuner_funcs;
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ctxt->type_update_fl = !0;
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ctxt->client = cp;
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ctxt->hdw = hdw;
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cp->handler = &ctxt->i2c_handler;
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pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x tuner handler set up",
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cp->client->addr);
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return !0;
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}
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/*
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Stuff for Emacs to see, in order to encourage consistent editing style:
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*** Local Variables: ***
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*** mode: c ***
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*** fill-column: 70 ***
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*** tab-width: 8 ***
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*** c-basic-offset: 8 ***
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*** End: ***
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*/
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