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kernel/linux-rt-4.4.41/drivers/media/usb/pvrusb2/pvrusb2-cs53l32a.c 2.29 KB
5113f6f70   김현기   kernel add
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  /*
   *
   *
   *  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
     v4l-dvb cs53l32a module.
  
  */
  
  #include "pvrusb2-cs53l32a.h"
  
  
  #include "pvrusb2-hdw-internal.h"
  #include "pvrusb2-debug.h"
  #include <linux/videodev2.h>
  #include <media/v4l2-common.h>
  #include <linux/errno.h>
  
  struct routing_scheme {
  	const int *def;
  	unsigned int cnt;
  };
  
  
  static const int routing_scheme1[] = {
  	[PVR2_CVAL_INPUT_TV] = 2,  /* 1 or 2 seems to work here */
  	[PVR2_CVAL_INPUT_RADIO] = 2,
  	[PVR2_CVAL_INPUT_COMPOSITE] = 0,
  	[PVR2_CVAL_INPUT_SVIDEO] =  0,
  };
  
  static const struct routing_scheme routing_def1 = {
  	.def = routing_scheme1,
  	.cnt = ARRAY_SIZE(routing_scheme1),
  };
  
  static const struct routing_scheme *routing_schemes[] = {
  	[PVR2_ROUTING_SCHEME_ONAIR] = &routing_def1,
  };
  
  
  void pvr2_cs53l32a_subdev_update(struct pvr2_hdw *hdw, struct v4l2_subdev *sd)
  {
  	if (hdw->input_dirty || hdw->force_dirty) {
  		const struct routing_scheme *sp;
  		unsigned int sid = hdw->hdw_desc->signal_routing_scheme;
  		u32 input;
  		pvr2_trace(PVR2_TRACE_CHIPS, "subdev v4l2 set_input(%d)",
  			   hdw->input_val);
  		sp = (sid < ARRAY_SIZE(routing_schemes)) ?
  			routing_schemes[sid] : NULL;
  		if ((sp == NULL) ||
  		    (hdw->input_val < 0) ||
  		    (hdw->input_val >= sp->cnt)) {
  			pvr2_trace(PVR2_TRACE_ERROR_LEGS,
  				   "*** WARNING *** subdev v4l2 set_input:"
  				   " Invalid routing scheme (%u)"
  				   " and/or input (%d)",
  				   sid, hdw->input_val);
  			return;
  		}
  		input = sp->def[hdw->input_val];
  		sd->ops->audio->s_routing(sd, input, 0, 0);
  	}
  }