[linux-block.git] / drivers / media / dvb-frontends / dvb_dummy_fe.c

/*
 *  Driver for Dummy Frontend
 *
 *  Written by Emard <emard@softhome.net>
 *
 *  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, or
 *  (at your option) any later version.
 *
 *  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.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/slab.h>

#include <media/dvb_frontend.h>
#include "dvb_dummy_fe.h"


struct dvb_dummy_fe_state {
	struct dvb_frontend frontend;
};


static int dvb_dummy_fe_read_status(struct dvb_frontend *fe,
				    enum fe_status *status)
{
	*status = FE_HAS_SIGNAL
		| FE_HAS_CARRIER
		| FE_HAS_VITERBI
		| FE_HAS_SYNC
		| FE_HAS_LOCK;

	return 0;
}

static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber)
{
	*ber = 0;
	return 0;
}

static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength)
{
	*strength = 0;
	return 0;
}

static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr)
{
	*snr = 0;
	return 0;
}

static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
{
	*ucblocks = 0;
	return 0;
}

/*
 * Should only be implemented if it actually reads something from the hardware.
 * Also, it should check for the locks, in order to avoid report wrong data
 * to userspace.
 */
static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe,
				     struct dtv_frontend_properties *p)
{
	return 0;
}

static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
{
	if (fe->ops.tuner_ops.set_params) {
		fe->ops.tuner_ops.set_params(fe);
		if (fe->ops.i2c_gate_ctrl)
			fe->ops.i2c_gate_ctrl(fe, 0);
	}

	return 0;
}

static int dvb_dummy_fe_sleep(struct dvb_frontend* fe)
{
	return 0;
}

static int dvb_dummy_fe_init(struct dvb_frontend* fe)
{
	return 0;
}

static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe,
				 enum fe_sec_tone_mode tone)
{
	return 0;
}

static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe,
				    enum fe_sec_voltage voltage)
{
	return 0;
}

static void dvb_dummy_fe_release(struct dvb_frontend* fe)
{
	struct dvb_dummy_fe_state* state = fe->demodulator_priv;
	kfree(state);
}

static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;

struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void)
{
	struct dvb_dummy_fe_state* state = NULL;

	/* allocate memory for the internal state */
	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
	if (!state)
		return NULL;

	/* create dvb_frontend */
	memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
	state->frontend.demodulator_priv = state;
	return &state->frontend;
}

static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;

struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
{
	struct dvb_dummy_fe_state* state = NULL;

	/* allocate memory for the internal state */
	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
	if (!state)
		return NULL;

	/* create dvb_frontend */
	memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
	state->frontend.demodulator_priv = state;
	return &state->frontend;
}

static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops;

struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
{
	struct dvb_dummy_fe_state* state = NULL;

	/* allocate memory for the internal state */
	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
	if (!state)
		return NULL;

	/* create dvb_frontend */
	memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
	state->frontend.demodulator_priv = state;
	return &state->frontend;
}

static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
	.delsys = { SYS_DVBT },
	.info = {
		.name			= "Dummy DVB-T",
		.frequency_min_hz	= 0,
		.frequency_max_hz	= 863250 * kHz,
		.frequency_stepsize_hz	= 62500,
		.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
				FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
				FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
				FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
				FE_CAN_TRANSMISSION_MODE_AUTO |
				FE_CAN_GUARD_INTERVAL_AUTO |
				FE_CAN_HIERARCHY_AUTO,
	},

	.release = dvb_dummy_fe_release,

	.init = dvb_dummy_fe_init,
	.sleep = dvb_dummy_fe_sleep,

	.set_frontend = dvb_dummy_fe_set_frontend,
	.get_frontend = dvb_dummy_fe_get_frontend,

	.read_status = dvb_dummy_fe_read_status,
	.read_ber = dvb_dummy_fe_read_ber,
	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
	.read_snr = dvb_dummy_fe_read_snr,
	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
};

static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
	.delsys = { SYS_DVBC_ANNEX_A },
	.info = {
		.name			= "Dummy DVB-C",
		.frequency_min_hz	=  51 * MHz,
		.frequency_max_hz	= 858 * MHz,
		.frequency_stepsize_hz	= 62500,
		.symbol_rate_min	= (57840000 / 2) / 64,  /* SACLK/64 == (XIN/2)/64 */
		.symbol_rate_max	= (57840000 / 2) / 4,   /* SACLK/4 */
		.caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
			FE_CAN_QAM_128 | FE_CAN_QAM_256 |
			FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO
	},

	.release = dvb_dummy_fe_release,

	.init = dvb_dummy_fe_init,
	.sleep = dvb_dummy_fe_sleep,

	.set_frontend = dvb_dummy_fe_set_frontend,
	.get_frontend = dvb_dummy_fe_get_frontend,

	.read_status = dvb_dummy_fe_read_status,
	.read_ber = dvb_dummy_fe_read_ber,
	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
	.read_snr = dvb_dummy_fe_read_snr,
	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
};

static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
	.delsys = { SYS_DVBS },
	.info = {
		.name			= "Dummy DVB-S",
		.frequency_min_hz	=  950 * MHz,
		.frequency_max_hz	= 2150 * MHz,
		.frequency_stepsize_hz	= 250 * kHz,
		.frequency_tolerance_hz	= 29500 * kHz,
		.symbol_rate_min	= 1000000,
		.symbol_rate_max	= 45000000,
		.caps = FE_CAN_INVERSION_AUTO |
			FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
			FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
			FE_CAN_QPSK
	},

	.release = dvb_dummy_fe_release,

	.init = dvb_dummy_fe_init,
	.sleep = dvb_dummy_fe_sleep,

	.set_frontend = dvb_dummy_fe_set_frontend,
	.get_frontend = dvb_dummy_fe_get_frontend,

	.read_status = dvb_dummy_fe_read_status,
	.read_ber = dvb_dummy_fe_read_ber,
	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
	.read_snr = dvb_dummy_fe_read_snr,
	.read_ucblocks = dvb_dummy_fe_read_ucblocks,

	.set_voltage = dvb_dummy_fe_set_voltage,
	.set_tone = dvb_dummy_fe_set_tone,
};

MODULE_DESCRIPTION("DVB DUMMY Frontend");
MODULE_AUTHOR("Emard");
MODULE_LICENSE("GPL");

EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Driver for Dummy Frontend
	3	*
	4	* Written by Emard <emard@softhome.net>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	*
	15	* GNU General Public License for more details.
1da177e4 LT	16	*/
	17
	18	#include <linux/module.h>
1da177e4	19	#include <linux/init.h>
4e57b681 TS	20	#include <linux/string.h>
4e57b681 TS	21	#include <linux/slab.h>
1da177e4	22
fada1935	23	#include <media/dvb_frontend.h>
1da177e4 LT	24	#include "dvb_dummy_fe.h"
	25
	26
	27	struct dvb_dummy_fe_state {
1da177e4 LT	28	struct dvb_frontend frontend;
	29	};
	30
	31
0df289a2 MCC	32	static int dvb_dummy_fe_read_status(struct dvb_frontend *fe,
0df289a2 MCC	33	enum fe_status *status)
1da177e4 LT	34	{
	35	*status = FE_HAS_SIGNAL
	36	\| FE_HAS_CARRIER
	37	\| FE_HAS_VITERBI
	38	\| FE_HAS_SYNC
	39	\| FE_HAS_LOCK;
	40
	41	return 0;
	42	}
	43
	44	static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber)
	45	{
	46	*ber = 0;
	47	return 0;
	48	}
	49
	50	static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength)
	51	{
	52	*strength = 0;
	53	return 0;
	54	}
	55
	56	static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr)
	57	{
	58	*snr = 0;
	59	return 0;
	60	}
	61
	62	static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
	63	{
	64	*ucblocks = 0;
	65	return 0;
	66	}
	67
7c61d80a	68	/*
7e3e68bc MCC	69	* Should only be implemented if it actually reads something from the hardware.
	70	* Also, it should check for the locks, in order to avoid report wrong data
	71	* to userspace.
7c61d80a	72	*/
7e3e68bc MCC	73	static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe,
7e3e68bc MCC	74	struct dtv_frontend_properties *p)
1da177e4 LT	75	{
	76	return 0;
	77	}
	78
d53b5102	79	static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
1da177e4	80	{
bccd7003	81	if (fe->ops.tuner_ops.set_params) {
14d24d14	82	fe->ops.tuner_ops.set_params(fe);
bccd7003 PB	83	if (fe->ops.i2c_gate_ctrl)
bccd7003 PB	84	fe->ops.i2c_gate_ctrl(fe, 0);
089e9809 AQ	85	}
089e9809 AQ	86
1da177e4 LT	87	return 0;
	88	}
	89
	90	static int dvb_dummy_fe_sleep(struct dvb_frontend* fe)
	91	{
	92	return 0;
	93	}
	94
	95	static int dvb_dummy_fe_init(struct dvb_frontend* fe)
	96	{
	97	return 0;
	98	}
	99
0df289a2 MCC	100	static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe,
0df289a2 MCC	101	enum fe_sec_tone_mode tone)
1da177e4 LT	102	{
	103	return 0;
	104	}
	105
0df289a2 MCC	106	static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe,
0df289a2 MCC	107	enum fe_sec_voltage voltage)
1da177e4 LT	108	{
	109	return 0;
	110	}
	111
	112	static void dvb_dummy_fe_release(struct dvb_frontend* fe)
	113	{
b8742700	114	struct dvb_dummy_fe_state* state = fe->demodulator_priv;
1da177e4 LT	115	kfree(state);
	116	}
	117
bd336e63	118	static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
1da177e4 LT	119
	120	struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void)
	121	{
	122	struct dvb_dummy_fe_state* state = NULL;
	123
	124	/* allocate memory for the internal state */
084e24ac	125	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
3f037426 PST	126	if (!state)
3f037426 PST	127	return NULL;
1da177e4	128
1da177e4	129	/* create dvb_frontend */
dea74869	130	memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
1da177e4 LT	131	state->frontend.demodulator_priv = state;
1da177e4 LT	132	return &state->frontend;
1da177e4 LT	133	}
1da177e4 LT	134
bd336e63	135	static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
1da177e4	136
d45b9b8a	137	struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
1da177e4 LT	138	{
	139	struct dvb_dummy_fe_state* state = NULL;
	140
	141	/* allocate memory for the internal state */
084e24ac	142	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
3f037426 PST	143	if (!state)
3f037426 PST	144	return NULL;
1da177e4	145
1da177e4	146	/* create dvb_frontend */
dea74869	147	memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
1da177e4 LT	148	state->frontend.demodulator_priv = state;
1da177e4 LT	149	return &state->frontend;
1da177e4 LT	150	}
1da177e4 LT	151
bd336e63	152	static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
1da177e4	153
d45b9b8a	154	struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
1da177e4 LT	155	{
	156	struct dvb_dummy_fe_state* state = NULL;
	157
	158	/* allocate memory for the internal state */
084e24ac	159	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
3f037426 PST	160	if (!state)
3f037426 PST	161	return NULL;
1da177e4	162
1da177e4	163	/* create dvb_frontend */
dea74869	164	memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
1da177e4 LT	165	state->frontend.demodulator_priv = state;
1da177e4 LT	166	return &state->frontend;
1da177e4 LT	167	}
1da177e4 LT	168
bd336e63	169	static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
d53b5102	170	.delsys = { SYS_DVBT },
1da177e4 LT	171	.info = {
1da177e4 LT	172	.name = "Dummy DVB-T",
f1b1eabf MCC	173	.frequency_min_hz = 0,
	174	.frequency_max_hz = 863250 * kHz,
	175	.frequency_stepsize_hz = 62500,
1da177e4 LT	176	.caps = FE_CAN_FEC_1_2 \| FE_CAN_FEC_2_3 \| FE_CAN_FEC_3_4 \|
	177	FE_CAN_FEC_4_5 \| FE_CAN_FEC_5_6 \| FE_CAN_FEC_6_7 \|
	178	FE_CAN_FEC_7_8 \| FE_CAN_FEC_8_9 \| FE_CAN_FEC_AUTO \|
	179	FE_CAN_QAM_16 \| FE_CAN_QAM_64 \| FE_CAN_QAM_AUTO \|
	180	FE_CAN_TRANSMISSION_MODE_AUTO \|
	181	FE_CAN_GUARD_INTERVAL_AUTO \|
	182	FE_CAN_HIERARCHY_AUTO,
	183	},
	184
	185	.release = dvb_dummy_fe_release,
	186
	187	.init = dvb_dummy_fe_init,
	188	.sleep = dvb_dummy_fe_sleep,
	189
d53b5102 MCC	190	.set_frontend = dvb_dummy_fe_set_frontend,
d53b5102 MCC	191	.get_frontend = dvb_dummy_fe_get_frontend,
1da177e4 LT	192
	193	.read_status = dvb_dummy_fe_read_status,
	194	.read_ber = dvb_dummy_fe_read_ber,
	195	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
	196	.read_snr = dvb_dummy_fe_read_snr,
	197	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
	198	};
	199
bd336e63	200	static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
d53b5102	201	.delsys = { SYS_DVBC_ANNEX_A },
1da177e4 LT	202	.info = {
1da177e4 LT	203	.name = "Dummy DVB-C",
f1b1eabf MCC	204	.frequency_min_hz = 51 * MHz,
	205	.frequency_max_hz = 858 * MHz,
	206	.frequency_stepsize_hz = 62500,
	207	.symbol_rate_min = (57840000 / 2) / 64, /* SACLK/64 == (XIN/2)/64 */
	208	.symbol_rate_max = (57840000 / 2) / 4, /* SACLK/4 */
1da177e4 LT	209	.caps = FE_CAN_QAM_16 \| FE_CAN_QAM_32 \| FE_CAN_QAM_64 \|
	210	FE_CAN_QAM_128 \| FE_CAN_QAM_256 \|
	211	FE_CAN_FEC_AUTO \| FE_CAN_INVERSION_AUTO
	212	},
	213
	214	.release = dvb_dummy_fe_release,
	215
	216	.init = dvb_dummy_fe_init,
	217	.sleep = dvb_dummy_fe_sleep,
	218
d53b5102 MCC	219	.set_frontend = dvb_dummy_fe_set_frontend,
d53b5102 MCC	220	.get_frontend = dvb_dummy_fe_get_frontend,
1da177e4 LT	221
	222	.read_status = dvb_dummy_fe_read_status,
	223	.read_ber = dvb_dummy_fe_read_ber,
	224	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
	225	.read_snr = dvb_dummy_fe_read_snr,
	226	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
	227	};
	228
bd336e63	229	static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
d53b5102	230	.delsys = { SYS_DVBS },
1da177e4 LT	231	.info = {
1da177e4 LT	232	.name = "Dummy DVB-S",
f1b1eabf MCC	233	.frequency_min_hz = 950 * MHz,
	234	.frequency_max_hz = 2150 * MHz,
	235	.frequency_stepsize_hz = 250 * kHz,
	236	.frequency_tolerance_hz = 29500 * kHz,
1da177e4 LT	237	.symbol_rate_min = 1000000,
	238	.symbol_rate_max = 45000000,
	239	.caps = FE_CAN_INVERSION_AUTO \|
	240	FE_CAN_FEC_1_2 \| FE_CAN_FEC_2_3 \| FE_CAN_FEC_3_4 \|
	241	FE_CAN_FEC_5_6 \| FE_CAN_FEC_7_8 \| FE_CAN_FEC_AUTO \|
	242	FE_CAN_QPSK
	243	},
	244
	245	.release = dvb_dummy_fe_release,
	246
	247	.init = dvb_dummy_fe_init,
	248	.sleep = dvb_dummy_fe_sleep,
	249
d53b5102 MCC	250	.set_frontend = dvb_dummy_fe_set_frontend,
d53b5102 MCC	251	.get_frontend = dvb_dummy_fe_get_frontend,
1da177e4 LT	252
	253	.read_status = dvb_dummy_fe_read_status,
	254	.read_ber = dvb_dummy_fe_read_ber,
	255	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
	256	.read_snr = dvb_dummy_fe_read_snr,
	257	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
	258
	259	.set_voltage = dvb_dummy_fe_set_voltage,
	260	.set_tone = dvb_dummy_fe_set_tone,
	261	};
	262
	263	MODULE_DESCRIPTION("DVB DUMMY Frontend");
	264	MODULE_AUTHOR("Emard");
	265	MODULE_LICENSE("GPL");
	266
	267	EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
	268	EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
	269	EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);