2005-04-16 16:20:36 -06:00
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/*
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* Driver for Dummy Frontend
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*
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* Written by Emard <emard@softhome.net>
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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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*
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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2005-10-30 16:03:48 -07:00
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#include <linux/string.h>
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#include <linux/slab.h>
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2005-04-16 16:20:36 -06:00
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2017-12-28 11:03:51 -07:00
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#include <media/dvb_frontend.h>
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2005-04-16 16:20:36 -06:00
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#include "dvb_dummy_fe.h"
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struct dvb_dummy_fe_state {
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struct dvb_frontend frontend;
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};
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2015-06-07 11:53:52 -06:00
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static int dvb_dummy_fe_read_status(struct dvb_frontend *fe,
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enum fe_status *status)
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2005-04-16 16:20:36 -06:00
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{
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*status = FE_HAS_SIGNAL
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| FE_HAS_CARRIER
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| FE_HAS_VITERBI
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| FE_HAS_SYNC
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| FE_HAS_LOCK;
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return 0;
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}
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static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber)
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{
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*ber = 0;
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return 0;
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}
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static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength)
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{
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*strength = 0;
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return 0;
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}
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static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr)
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{
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*snr = 0;
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return 0;
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}
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static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
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{
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*ucblocks = 0;
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return 0;
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}
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[media] dvb: don't require a parameter for get_frontend
Just like set_frontend, use the dvb cache properties for get_frontend.
This is more consistent, as both functions are now symetric. Also,
at the places get_frontend is called, it makes sense to update the
cache.
Most of this patch were generated by this small perl script:
while (<>) { $file .= $_; }
if ($file =~ m/\.get_frontend\s*=\s*([\d\w_]+)/) {
my $get = $1;
$file =~ s/($get)(\s*\([^\,\)]+)\,\s*struct\s+dtv_frontend_properties\s*\*\s*([_\d\w]+)\)\s*\{/\1\2)\n{\n\tstruct dtv_frontend_properties *\3 = &fe->dtv_property_cache;/g;
}
print $file;
Of course, the changes at dvb_frontend.[ch] were made by hand,
as well as the changes on a few other places, where get_frontend()
is called internally inside the driver.
On some places, get_frontend() were just a void function. Those
occurrences were removed, as the DVB core handles such cases.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-30 07:30:21 -07:00
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/*
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2016-02-04 07:58:30 -07:00
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* Should only be implemented if it actually reads something from the hardware.
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* Also, it should check for the locks, in order to avoid report wrong data
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* to userspace.
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[media] dvb: don't require a parameter for get_frontend
Just like set_frontend, use the dvb cache properties for get_frontend.
This is more consistent, as both functions are now symetric. Also,
at the places get_frontend is called, it makes sense to update the
cache.
Most of this patch were generated by this small perl script:
while (<>) { $file .= $_; }
if ($file =~ m/\.get_frontend\s*=\s*([\d\w_]+)/) {
my $get = $1;
$file =~ s/($get)(\s*\([^\,\)]+)\,\s*struct\s+dtv_frontend_properties\s*\*\s*([_\d\w]+)\)\s*\{/\1\2)\n{\n\tstruct dtv_frontend_properties *\3 = &fe->dtv_property_cache;/g;
}
print $file;
Of course, the changes at dvb_frontend.[ch] were made by hand,
as well as the changes on a few other places, where get_frontend()
is called internally inside the driver.
On some places, get_frontend() were just a void function. Those
occurrences were removed, as the DVB core handles such cases.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-12-30 07:30:21 -07:00
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*/
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2016-02-04 07:58:30 -07:00
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static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe,
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struct dtv_frontend_properties *p)
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2005-04-16 16:20:36 -06:00
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{
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return 0;
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}
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2011-12-26 06:10:42 -07:00
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static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
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2005-04-16 16:20:36 -06:00
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{
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2008-08-30 09:15:54 -06:00
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if (fe->ops.tuner_ops.set_params) {
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2011-12-24 08:24:33 -07:00
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fe->ops.tuner_ops.set_params(fe);
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2008-08-30 09:15:54 -06:00
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if (fe->ops.i2c_gate_ctrl)
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fe->ops.i2c_gate_ctrl(fe, 0);
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2006-04-18 14:47:10 -06:00
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}
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2005-04-16 16:20:36 -06:00
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return 0;
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}
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static int dvb_dummy_fe_sleep(struct dvb_frontend* fe)
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{
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return 0;
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}
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static int dvb_dummy_fe_init(struct dvb_frontend* fe)
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{
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return 0;
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}
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2015-06-07 11:53:52 -06:00
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static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe,
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enum fe_sec_tone_mode tone)
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2005-04-16 16:20:36 -06:00
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{
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return 0;
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}
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2015-06-07 11:53:52 -06:00
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static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe,
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enum fe_sec_voltage voltage)
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2005-04-16 16:20:36 -06:00
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{
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return 0;
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}
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static void dvb_dummy_fe_release(struct dvb_frontend* fe)
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{
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2005-05-16 22:54:31 -06:00
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struct dvb_dummy_fe_state* state = fe->demodulator_priv;
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2005-04-16 16:20:36 -06:00
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kfree(state);
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}
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2016-08-09 15:32:21 -06:00
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static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
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2005-04-16 16:20:36 -06:00
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struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void)
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{
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struct dvb_dummy_fe_state* state = NULL;
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/* allocate memory for the internal state */
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2009-08-10 19:51:01 -06:00
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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
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2012-09-12 05:56:04 -06:00
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if (!state)
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return NULL;
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2005-04-16 16:20:36 -06:00
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/* create dvb_frontend */
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2006-05-14 02:01:31 -06:00
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memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
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2005-04-16 16:20:36 -06:00
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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2016-08-09 15:32:21 -06:00
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static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
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2005-04-16 16:20:36 -06:00
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2008-09-04 00:33:43 -06:00
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struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
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2005-04-16 16:20:36 -06:00
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{
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struct dvb_dummy_fe_state* state = NULL;
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/* allocate memory for the internal state */
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2009-08-10 19:51:01 -06:00
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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
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2012-09-12 05:56:04 -06:00
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if (!state)
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return NULL;
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2005-04-16 16:20:36 -06:00
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/* create dvb_frontend */
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2006-05-14 02:01:31 -06:00
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memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
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2005-04-16 16:20:36 -06:00
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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2016-08-09 15:32:21 -06:00
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static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
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2005-04-16 16:20:36 -06:00
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2008-09-04 00:33:43 -06:00
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struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
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2005-04-16 16:20:36 -06:00
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{
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struct dvb_dummy_fe_state* state = NULL;
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/* allocate memory for the internal state */
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2009-08-10 19:51:01 -06:00
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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
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2012-09-12 05:56:04 -06:00
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if (!state)
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return NULL;
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2005-04-16 16:20:36 -06:00
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/* create dvb_frontend */
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2006-05-14 02:01:31 -06:00
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memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
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2005-04-16 16:20:36 -06:00
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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2016-08-09 15:32:21 -06:00
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static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
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2011-12-26 06:10:42 -07:00
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.delsys = { SYS_DVBT },
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2005-04-16 16:20:36 -06:00
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.info = {
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.name = "Dummy DVB-T",
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.frequency_min = 0,
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.frequency_max = 863250000,
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.frequency_stepsize = 62500,
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.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
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FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
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FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
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FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
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FE_CAN_TRANSMISSION_MODE_AUTO |
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FE_CAN_GUARD_INTERVAL_AUTO |
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FE_CAN_HIERARCHY_AUTO,
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},
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.release = dvb_dummy_fe_release,
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.init = dvb_dummy_fe_init,
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.sleep = dvb_dummy_fe_sleep,
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2011-12-26 06:10:42 -07:00
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.set_frontend = dvb_dummy_fe_set_frontend,
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.get_frontend = dvb_dummy_fe_get_frontend,
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2005-04-16 16:20:36 -06:00
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.read_status = dvb_dummy_fe_read_status,
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.read_ber = dvb_dummy_fe_read_ber,
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.read_signal_strength = dvb_dummy_fe_read_signal_strength,
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.read_snr = dvb_dummy_fe_read_snr,
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.read_ucblocks = dvb_dummy_fe_read_ucblocks,
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};
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2016-08-09 15:32:21 -06:00
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static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
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2011-12-26 06:10:42 -07:00
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.delsys = { SYS_DVBC_ANNEX_A },
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2005-04-16 16:20:36 -06:00
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.info = {
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.name = "Dummy DVB-C",
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.frequency_stepsize = 62500,
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.frequency_min = 51000000,
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.frequency_max = 858000000,
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.symbol_rate_min = (57840000/2)/64, /* SACLK/64 == (XIN/2)/64 */
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.symbol_rate_max = (57840000/2)/4, /* SACLK/4 */
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.caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
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FE_CAN_QAM_128 | FE_CAN_QAM_256 |
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FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO
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},
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.release = dvb_dummy_fe_release,
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.init = dvb_dummy_fe_init,
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.sleep = dvb_dummy_fe_sleep,
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2011-12-26 06:10:42 -07:00
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.set_frontend = dvb_dummy_fe_set_frontend,
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.get_frontend = dvb_dummy_fe_get_frontend,
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2005-04-16 16:20:36 -06:00
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.read_status = dvb_dummy_fe_read_status,
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.read_ber = dvb_dummy_fe_read_ber,
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.read_signal_strength = dvb_dummy_fe_read_signal_strength,
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.read_snr = dvb_dummy_fe_read_snr,
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.read_ucblocks = dvb_dummy_fe_read_ucblocks,
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};
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2016-08-09 15:32:21 -06:00
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static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
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2011-12-26 06:10:42 -07:00
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.delsys = { SYS_DVBS },
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2005-04-16 16:20:36 -06:00
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.info = {
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.name = "Dummy DVB-S",
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.frequency_min = 950000,
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.frequency_max = 2150000,
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.frequency_stepsize = 250, /* kHz for QPSK frontends */
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.frequency_tolerance = 29500,
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.symbol_rate_min = 1000000,
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.symbol_rate_max = 45000000,
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.caps = FE_CAN_INVERSION_AUTO |
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FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
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FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
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FE_CAN_QPSK
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},
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.release = dvb_dummy_fe_release,
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.init = dvb_dummy_fe_init,
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.sleep = dvb_dummy_fe_sleep,
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2011-12-26 06:10:42 -07:00
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.set_frontend = dvb_dummy_fe_set_frontend,
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.get_frontend = dvb_dummy_fe_get_frontend,
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2005-04-16 16:20:36 -06:00
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.read_status = dvb_dummy_fe_read_status,
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.read_ber = dvb_dummy_fe_read_ber,
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.read_signal_strength = dvb_dummy_fe_read_signal_strength,
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.read_snr = dvb_dummy_fe_read_snr,
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.read_ucblocks = dvb_dummy_fe_read_ucblocks,
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.set_voltage = dvb_dummy_fe_set_voltage,
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.set_tone = dvb_dummy_fe_set_tone,
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};
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MODULE_DESCRIPTION("DVB DUMMY Frontend");
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MODULE_AUTHOR("Emard");
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MODULE_LICENSE("GPL");
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EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
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EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
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EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);
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