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,
37				    enum fe_status *status)
38{
39	*status = FE_HAS_SIGNAL
40		| FE_HAS_CARRIER
41		| FE_HAS_VITERBI
42		| FE_HAS_SYNC
43		| FE_HAS_LOCK;
44
45	return 0;
46}
47
48static int dvb_dummy_fe_read_ber(struct dvb_frontend* fe, u32* ber)
49{
50	*ber = 0;
51	return 0;
52}
53
54static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend* fe, u16* strength)
55{
56	*strength = 0;
57	return 0;
58}
59
60static int dvb_dummy_fe_read_snr(struct dvb_frontend* fe, u16* snr)
61{
62	*snr = 0;
63	return 0;
64}
65
66static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
67{
68	*ucblocks = 0;
69	return 0;
70}
71
72/*
73 * Only needed if it actually reads something from the hardware
74 */
75static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe)
76{
77	return 0;
78}
79
80static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
81{
82	if (fe->ops.tuner_ops.set_params) {
83		fe->ops.tuner_ops.set_params(fe);
84		if (fe->ops.i2c_gate_ctrl)
85			fe->ops.i2c_gate_ctrl(fe, 0);
86	}
87
88	return 0;
89}
90
91static int dvb_dummy_fe_sleep(struct dvb_frontend* fe)
92{
93	return 0;
94}
95
96static int dvb_dummy_fe_init(struct dvb_frontend* fe)
97{
98	return 0;
99}
100
101static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe,
102				 enum fe_sec_tone_mode tone)
103{
104	return 0;
105}
106
107static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe,
108				    enum fe_sec_voltage voltage)
109{
110	return 0;
111}
112
113static void dvb_dummy_fe_release(struct dvb_frontend* fe)
114{
115	struct dvb_dummy_fe_state* state = fe->demodulator_priv;
116	kfree(state);
117}
118
119static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
120
121struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void)
122{
123	struct dvb_dummy_fe_state* state = NULL;
124
125	/* allocate memory for the internal state */
126	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
127	if (!state)
128		return NULL;
129
130	/* create dvb_frontend */
131	memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops));
132	state->frontend.demodulator_priv = state;
133	return &state->frontend;
134}
135
136static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
137
138struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
139{
140	struct dvb_dummy_fe_state* state = NULL;
141
142	/* allocate memory for the internal state */
143	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
144	if (!state)
145		return NULL;
146
147	/* create dvb_frontend */
148	memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops));
149	state->frontend.demodulator_priv = state;
150	return &state->frontend;
151}
152
153static struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
154
155struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
156{
157	struct dvb_dummy_fe_state* state = NULL;
158
159	/* allocate memory for the internal state */
160	state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
161	if (!state)
162		return NULL;
163
164	/* create dvb_frontend */
165	memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops));
166	state->frontend.demodulator_priv = state;
167	return &state->frontend;
168}
169
170static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
171	.delsys = { SYS_DVBT },
172	.info = {
173		.name			= "Dummy DVB-T",
174		.frequency_min		= 0,
175		.frequency_max		= 863250000,
176		.frequency_stepsize	= 62500,
177		.caps = FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
178				FE_CAN_FEC_4_5 | FE_CAN_FEC_5_6 | FE_CAN_FEC_6_7 |
179				FE_CAN_FEC_7_8 | FE_CAN_FEC_8_9 | FE_CAN_FEC_AUTO |
180				FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
181				FE_CAN_TRANSMISSION_MODE_AUTO |
182				FE_CAN_GUARD_INTERVAL_AUTO |
183				FE_CAN_HIERARCHY_AUTO,
184	},
185
186	.release = dvb_dummy_fe_release,
187
188	.init = dvb_dummy_fe_init,
189	.sleep = dvb_dummy_fe_sleep,
190
191	.set_frontend = dvb_dummy_fe_set_frontend,
192	.get_frontend = dvb_dummy_fe_get_frontend,
193
194	.read_status = dvb_dummy_fe_read_status,
195	.read_ber = dvb_dummy_fe_read_ber,
196	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
197	.read_snr = dvb_dummy_fe_read_snr,
198	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
199};
200
201static struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
202	.delsys = { SYS_DVBC_ANNEX_A },
203	.info = {
204		.name			= "Dummy DVB-C",
205		.frequency_stepsize	= 62500,
206		.frequency_min		= 51000000,
207		.frequency_max		= 858000000,
208		.symbol_rate_min	= (57840000/2)/64,     /* SACLK/64 == (XIN/2)/64 */
209		.symbol_rate_max	= (57840000/2)/4,      /* SACLK/4 */
210		.caps = FE_CAN_QAM_16 | FE_CAN_QAM_32 | FE_CAN_QAM_64 |
211			FE_CAN_QAM_128 | FE_CAN_QAM_256 |
212			FE_CAN_FEC_AUTO | FE_CAN_INVERSION_AUTO
213	},
214
215	.release = dvb_dummy_fe_release,
216
217	.init = dvb_dummy_fe_init,
218	.sleep = dvb_dummy_fe_sleep,
219
220	.set_frontend = dvb_dummy_fe_set_frontend,
221	.get_frontend = dvb_dummy_fe_get_frontend,
222
223	.read_status = dvb_dummy_fe_read_status,
224	.read_ber = dvb_dummy_fe_read_ber,
225	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
226	.read_snr = dvb_dummy_fe_read_snr,
227	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
228};
229
230static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
231	.delsys = { SYS_DVBS },
232	.info = {
233		.name			= "Dummy DVB-S",
234		.frequency_min		= 950000,
235		.frequency_max		= 2150000,
236		.frequency_stepsize	= 250,           /* kHz for QPSK frontends */
237		.frequency_tolerance	= 29500,
238		.symbol_rate_min	= 1000000,
239		.symbol_rate_max	= 45000000,
240		.caps = FE_CAN_INVERSION_AUTO |
241			FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
242			FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
243			FE_CAN_QPSK
244	},
245
246	.release = dvb_dummy_fe_release,
247
248	.init = dvb_dummy_fe_init,
249	.sleep = dvb_dummy_fe_sleep,
250
251	.set_frontend = dvb_dummy_fe_set_frontend,
252	.get_frontend = dvb_dummy_fe_get_frontend,
253
254	.read_status = dvb_dummy_fe_read_status,
255	.read_ber = dvb_dummy_fe_read_ber,
256	.read_signal_strength = dvb_dummy_fe_read_signal_strength,
257	.read_snr = dvb_dummy_fe_read_snr,
258	.read_ucblocks = dvb_dummy_fe_read_ucblocks,
259
260	.set_voltage = dvb_dummy_fe_set_voltage,
261	.set_tone = dvb_dummy_fe_set_tone,
262};
263
264MODULE_DESCRIPTION("DVB DUMMY Frontend");
265MODULE_AUTHOR("Emard");
266MODULE_LICENSE("GPL");
267
268EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
269EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
270EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);
271