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Detect if firmware is running run-time and download / start it only when needed. Detection is done by reading IF frequency value. Garbage value is returned by firmware when it is not running, otherwise correct value is returned. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
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* Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver
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*
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* Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
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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, or
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* (at your option) any later version.
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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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#ifndef SI2157_PRIV_H
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#define SI2157_PRIV_H
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#include <linux/firmware.h>
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#include <media/v4l2-mc.h>
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#include "si2157.h"
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/* state struct */
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struct si2157_dev {
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struct mutex i2c_mutex;
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struct dvb_frontend *fe;
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bool active;
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bool inversion;
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u8 chiptype;
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u8 if_port;
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u32 if_frequency;
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struct delayed_work stat_work;
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#if defined(CONFIG_MEDIA_CONTROLLER)
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struct media_device *mdev;
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struct media_entity ent;
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struct media_pad pad[TUNER_NUM_PADS];
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#endif
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};
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#define SI2157_CHIPTYPE_SI2157 0
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#define SI2157_CHIPTYPE_SI2146 1
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/* firmware command struct */
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#define SI2157_ARGLEN 30
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struct si2157_cmd {
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u8 args[SI2157_ARGLEN];
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unsigned wlen;
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unsigned rlen;
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};
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#define SI2158_A20_FIRMWARE "dvb-tuner-si2158-a20-01.fw"
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#endif
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