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.
16 *
17 *  You should have received a copy of the GNU General Public License
18 *  along with this program; if not, write to the Free Software
19 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.=
20 */
21
22#include <linux/module.h>
23#include <linux/init.h>
24#include <linux/string.h>
25#include <linux/slab.h>
26
27#include "dvb_frontend.h"
28#include "dvb_dummy_fe.h"
29
30
31struct dvb_dummy_fe_state {
32	struct dvb_frontend frontend;
33};
34
35
36static int dvb_dummy_fe_read_status(struct dvb_frontend* fe, fe_status_t* status)
37{
38	*status = FE_HAS_SIGNAL
39		| FE_HAS_CARRIER
40		| FE_HAS_VITERBI
41		| FE_HAS_SYNC
42		| FE_HAS_LOCK;
43
44	return 0;
45}
46
47static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber)
48{
49	*ber = 0;
50	return 0;
51}
52
53static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength)
54{
55	*strength = 0;
56	return 0;
57}
58
59static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr)
60{
61	*snr = 0;
62	return 0;
63}
64
65static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
66{
67	*ucblocks = 0;
68	return 0;
69}
70
71/*
72 * Only needed if it actually reads something from the hardware
73 */
74static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe)
75{
76	return 0;
77}
78
79static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
80{
81	if (fe->ops.tuner_ops.set_params) {
82		fe->ops.tuner_ops.set_params(fe);
83		if (fe->ops.i2c_gate_ctrl)
84			fe->ops.i2c_gate_ctrl(fe, 0);
85	}
86
87	return 0;
88}
89
90static int dvb_dummy_fe_sleep(struct dvb_frontend* fe)
91{
92	return 0;
93}
94
95static int dvb_dummy_fe_init(struct dvb_frontend* fe)
96{
97	return 0;
98}
99
100static int dvb_dummy_fe_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone)
101{
102	return 0;
103}
104
105static int dvb_dummy_fe_set_voltage(struct dvb_frontend* fe, fe_sec_voltage_t voltage)
106{
107	return 0;
108}
109
110static void dvb_dummy_fe_release(struct dvb_frontend* fe)
111{
112	struct dvb_dummy_fe_state* state = fe->demodulator_priv;
113	kfree(state);
114}
115
116static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
117
118struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void)
119{
120	struct dvb_dummy_fe_state* state = NULL;
121
122	/* allocate memory for the internal state */
123	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
124	if (!state)
125		return NULL;
126
127	/* create dvb_frontend */
128	memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
129	state->frontend.demodulator_priv = state;
130	return &state->frontend;
131}
132
133static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
134
135struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
136{
137	struct dvb_dummy_fe_state* state = NULL;
138
139	/* allocate memory for the internal state */
140	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
141	if (!state)
142		return NULL;
143
144	/* create dvb_frontend */
145	memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
146	state->frontend.demodulator_priv = state;
147	return &state->frontend;
148}
149
150static struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
151
152struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
153{
154	struct dvb_dummy_fe_state* state = NULL;
155
156	/* allocate memory for the internal state */
157	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
158	if (!state)
159		return NULL;
160
161	/* create dvb_frontend */
162	memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
163	state->frontend.demodulator_priv = state;
164	return &state->frontend;
165}
166
167static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
168	.delsys = { SYS_DVBT },
169	.info = {
170		.name			= "Dummy DVB-T",
171		.frequency_min		= 0,
172		.frequency_max		= 863250000,
173		.frequency_stepsize	= 62500,
174		.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
175				FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
176				FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
177				FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
178				FE_CAN_TRANSMISSION_MODE_AUTO |
179				FE_CAN_GUARD_INTERVAL_AUTO |
180				FE_CAN_HIERARCHY_AUTO,
181	},
182
183	.release = dvb_dummy_fe_release,
184
185	.init = dvb_dummy_fe_init,
186	.sleep = dvb_dummy_fe_sleep,
187
188	.set_frontend = dvb_dummy_fe_set_frontend,
189	.get_frontend = dvb_dummy_fe_get_frontend,
190
191	.read_status = dvb_dummy_fe_read_status,
192	.read_ber = dvb_dummy_fe_read_ber,
193	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
194	.read_snr = dvb_dummy_fe_read_snr,
195	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
196};
197
198static struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
199	.delsys = { SYS_DVBC_ANNEX_A },
200	.info = {
201		.name			= "Dummy DVB-C",
202		.frequency_stepsize	= 62500,
203		.frequency_min		= 51000000,
204		.frequency_max		= 858000000,
205		.symbol_rate_min	= (57840000/2)/64,     /* SACLK/64 == (XIN/2)/64 */
206		.symbol_rate_max	= (57840000/2)/4,      /* SACLK/4 */
207		.caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
208			FE_CAN_QAM_128 | FE_CAN_QAM_256 |
209			FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO
210	},
211
212	.release = dvb_dummy_fe_release,
213
214	.init = dvb_dummy_fe_init,
215	.sleep = dvb_dummy_fe_sleep,
216
217	.set_frontend = dvb_dummy_fe_set_frontend,
218	.get_frontend = dvb_dummy_fe_get_frontend,
219
220	.read_status = dvb_dummy_fe_read_status,
221	.read_ber = dvb_dummy_fe_read_ber,
222	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
223	.read_snr = dvb_dummy_fe_read_snr,
224	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
225};
226
227static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
228	.delsys = { SYS_DVBS },
229	.info = {
230		.name			= "Dummy DVB-S",
231		.frequency_min		= 950000,
232		.frequency_max		= 2150000,
233		.frequency_stepsize	= 250,           /* kHz for QPSK frontends */
234		.frequency_tolerance	= 29500,
235		.symbol_rate_min	= 1000000,
236		.symbol_rate_max	= 45000000,
237		.caps = FE_CAN_INVERSION_AUTO |
238			FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
239			FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
240			FE_CAN_QPSK
241	},
242
243	.release = dvb_dummy_fe_release,
244
245	.init = dvb_dummy_fe_init,
246	.sleep = dvb_dummy_fe_sleep,
247
248	.set_frontend = dvb_dummy_fe_set_frontend,
249	.get_frontend = dvb_dummy_fe_get_frontend,
250
251	.read_status = dvb_dummy_fe_read_status,
252	.read_ber = dvb_dummy_fe_read_ber,
253	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
254	.read_snr = dvb_dummy_fe_read_snr,
255	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
256
257	.set_voltage = dvb_dummy_fe_set_voltage,
258	.set_tone = dvb_dummy_fe_set_tone,
259};
260
261MODULE_DESCRIPTION("DVB DUMMY Frontend");
262MODULE_AUTHOR("Emard");
263MODULE_LICENSE("GPL");
264
265EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
266EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
267EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);
268