7e3e68bcfd
Instead of using the DTV properties cache directly, pass the get frontend data as an argument. For now, everything should remain the same, but the next patch will prevent get_frontend to affect the global cache. This is needed because several drivers don't care enough to only change the properties if locked. Due to that, calling G_PROPERTY before locking on those drivers will make them to never lock. Ok, those drivers are crap and should never be merged like that, but the core should not rely that the drivers would be doing the right thing. Reviewed-by: Michael Ira Krufky <mkrufky@linuxtv.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
274 lines
7 KiB
C
274 lines
7 KiB
C
/*
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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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* 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., 675 Mass Ave, Cambridge, MA 02139, USA.=
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include "dvb_frontend.h"
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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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static int dvb_dummy_fe_read_status(struct dvb_frontend *fe,
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enum fe_status *status)
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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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/*
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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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*/
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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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{
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return 0;
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}
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static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
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{
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if (fe->ops.tuner_ops.set_params) {
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fe->ops.tuner_ops.set_params(fe);
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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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}
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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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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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{
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return 0;
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}
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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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{
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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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struct dvb_dummy_fe_state* state = fe->demodulator_priv;
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kfree(state);
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}
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static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
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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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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
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if (!state)
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return NULL;
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/* create dvb_frontend */
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memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
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struct dvb_frontend *dvb_dummy_fe_qpsk_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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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
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if (!state)
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return NULL;
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/* create dvb_frontend */
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memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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static struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
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struct dvb_frontend *dvb_dummy_fe_qam_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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state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
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if (!state)
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return NULL;
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/* create dvb_frontend */
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memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
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state->frontend.demodulator_priv = state;
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return &state->frontend;
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}
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static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
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.delsys = { SYS_DVBT },
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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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.set_frontend = dvb_dummy_fe_set_frontend,
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.get_frontend = dvb_dummy_fe_get_frontend,
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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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static struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
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.delsys = { SYS_DVBC_ANNEX_A },
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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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.set_frontend = dvb_dummy_fe_set_frontend,
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.get_frontend = dvb_dummy_fe_get_frontend,
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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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static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
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.delsys = { SYS_DVBS },
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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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.set_frontend = dvb_dummy_fe_set_frontend,
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.get_frontend = dvb_dummy_fe_get_frontend,
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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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