Commit | Line | Data |
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fb41f5a7 PB |
1 | /* Frontend part of the Linux driver for the WideView/ Yakumo/ Hama/ |
2 | * Typhoon/ Yuan DVB-T USB2.0 receiver. | |
776338e1 JS |
3 | * |
4 | * Copyright (C) 2005 Patrick Boettcher <patrick.boettcher@desy.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation, version 2. | |
9 | * | |
10 | * see Documentation/dvb/README.dvb-usb for more information | |
11 | */ | |
12 | #include "dtt200u.h" | |
13 | ||
14 | struct dtt200u_fe_state { | |
15 | struct dvb_usb_device *d; | |
16 | ||
d590f9c2 PB |
17 | fe_status_t stat; |
18 | ||
776338e1 JS |
19 | struct dvb_frontend_parameters fep; |
20 | struct dvb_frontend frontend; | |
21 | }; | |
22 | ||
776338e1 JS |
23 | static int dtt200u_fe_read_status(struct dvb_frontend* fe, fe_status_t *stat) |
24 | { | |
25 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
d590f9c2 PB |
26 | u8 st = GET_TUNE_STATUS, b[3]; |
27 | ||
28 | dvb_usb_generic_rw(state->d,&st,1,b,3,0); | |
776338e1 | 29 | |
d590f9c2 | 30 | switch (b[0]) { |
776338e1 | 31 | case 0x01: |
d590f9c2 PB |
32 | *stat = FE_HAS_SIGNAL | FE_HAS_CARRIER | |
33 | FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK; | |
776338e1 | 34 | break; |
d590f9c2 PB |
35 | case 0x00: /* pending */ |
36 | *stat = FE_TIMEDOUT; /* during set_frontend */ | |
776338e1 JS |
37 | break; |
38 | default: | |
d590f9c2 PB |
39 | case 0x02: /* failed */ |
40 | *stat = 0; | |
776338e1 JS |
41 | break; |
42 | } | |
776338e1 JS |
43 | return 0; |
44 | } | |
d590f9c2 | 45 | |
776338e1 JS |
46 | static int dtt200u_fe_read_ber(struct dvb_frontend* fe, u32 *ber) |
47 | { | |
48 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
d590f9c2 PB |
49 | u8 bw = GET_VIT_ERR_CNT,b[3]; |
50 | dvb_usb_generic_rw(state->d,&bw,1,b,3,0); | |
51 | *ber = (b[0] << 16) | (b[1] << 8) | b[2]; | |
776338e1 JS |
52 | return 0; |
53 | } | |
54 | ||
55 | static int dtt200u_fe_read_unc_blocks(struct dvb_frontend* fe, u32 *unc) | |
56 | { | |
57 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
d590f9c2 PB |
58 | u8 bw = GET_RS_UNCOR_BLK_CNT,b[2]; |
59 | ||
60 | dvb_usb_generic_rw(state->d,&bw,1,b,2,0); | |
61 | *unc = (b[0] << 8) | b[1]; | |
776338e1 JS |
62 | return 0; |
63 | } | |
64 | ||
65 | static int dtt200u_fe_read_signal_strength(struct dvb_frontend* fe, u16 *strength) | |
66 | { | |
67 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
d590f9c2 | 68 | u8 bw = GET_AGC, b; |
776338e1 JS |
69 | dvb_usb_generic_rw(state->d,&bw,1,&b,1,0); |
70 | *strength = (b << 8) | b; | |
71 | return 0; | |
72 | } | |
73 | ||
74 | static int dtt200u_fe_read_snr(struct dvb_frontend* fe, u16 *snr) | |
75 | { | |
76 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
77 | u8 bw = GET_SNR,br; | |
78 | dvb_usb_generic_rw(state->d,&bw,1,&br,1,0); | |
79 | *snr = ~((br << 8) | br); | |
80 | return 0; | |
81 | } | |
82 | ||
83 | static int dtt200u_fe_init(struct dvb_frontend* fe) | |
84 | { | |
85 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
d590f9c2 | 86 | u8 b = SET_INIT; |
776338e1 JS |
87 | return dvb_usb_generic_write(state->d,&b,1); |
88 | } | |
89 | ||
90 | static int dtt200u_fe_sleep(struct dvb_frontend* fe) | |
91 | { | |
92 | return dtt200u_fe_init(fe); | |
93 | } | |
94 | ||
95 | static int dtt200u_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune) | |
96 | { | |
97 | tune->min_delay_ms = 1500; | |
d590f9c2 PB |
98 | tune->step_size = 0; |
99 | tune->max_drift = 0; | |
776338e1 JS |
100 | return 0; |
101 | } | |
102 | ||
103 | static int dtt200u_fe_set_frontend(struct dvb_frontend* fe, | |
104 | struct dvb_frontend_parameters *fep) | |
105 | { | |
106 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
d590f9c2 PB |
107 | int i; |
108 | fe_status_t st; | |
776338e1 | 109 | u16 freq = fep->frequency / 250000; |
d590f9c2 | 110 | u8 bwbuf[2] = { SET_BANDWIDTH, 0 },freqbuf[3] = { SET_RF_FREQ, 0, 0 }; |
776338e1 JS |
111 | |
112 | switch (fep->u.ofdm.bandwidth) { | |
d590f9c2 PB |
113 | case BANDWIDTH_8_MHZ: bwbuf[1] = 8; break; |
114 | case BANDWIDTH_7_MHZ: bwbuf[1] = 7; break; | |
115 | case BANDWIDTH_6_MHZ: bwbuf[1] = 6; break; | |
776338e1 JS |
116 | case BANDWIDTH_AUTO: return -EOPNOTSUPP; |
117 | default: | |
118 | return -EINVAL; | |
119 | } | |
776338e1 | 120 | |
776338e1 JS |
121 | dvb_usb_generic_write(state->d,bwbuf,2); |
122 | ||
123 | freqbuf[1] = freq & 0xff; | |
124 | freqbuf[2] = (freq >> 8) & 0xff; | |
125 | dvb_usb_generic_write(state->d,freqbuf,3); | |
126 | ||
d590f9c2 PB |
127 | for (i = 0; i < 30; i++) { |
128 | msleep(20); | |
129 | dtt200u_fe_read_status(fe, &st); | |
130 | if (st & FE_TIMEDOUT) | |
131 | continue; | |
132 | } | |
776338e1 JS |
133 | |
134 | return 0; | |
135 | } | |
136 | ||
137 | static int dtt200u_fe_get_frontend(struct dvb_frontend* fe, | |
138 | struct dvb_frontend_parameters *fep) | |
139 | { | |
140 | struct dtt200u_fe_state *state = fe->demodulator_priv; | |
141 | memcpy(fep,&state->fep,sizeof(struct dvb_frontend_parameters)); | |
142 | return 0; | |
143 | } | |
144 | ||
145 | static void dtt200u_fe_release(struct dvb_frontend* fe) | |
146 | { | |
147 | struct dtt200u_fe_state *state = (struct dtt200u_fe_state*) fe->demodulator_priv; | |
148 | kfree(state); | |
149 | } | |
150 | ||
151 | static struct dvb_frontend_ops dtt200u_fe_ops; | |
152 | ||
153 | struct dvb_frontend* dtt200u_fe_attach(struct dvb_usb_device *d) | |
154 | { | |
155 | struct dtt200u_fe_state* state = NULL; | |
156 | ||
157 | /* allocate memory for the internal state */ | |
7408187d | 158 | state = kzalloc(sizeof(struct dtt200u_fe_state), GFP_KERNEL); |
776338e1 JS |
159 | if (state == NULL) |
160 | goto error; | |
776338e1 JS |
161 | |
162 | deb_info("attaching frontend dtt200u\n"); | |
163 | ||
164 | state->d = d; | |
165 | ||
dea74869 | 166 | memcpy(&state->frontend.ops,&dtt200u_fe_ops,sizeof(struct dvb_frontend_ops)); |
776338e1 JS |
167 | state->frontend.demodulator_priv = state; |
168 | ||
8397703e | 169 | return &state->frontend; |
776338e1 JS |
170 | error: |
171 | return NULL; | |
776338e1 JS |
172 | } |
173 | ||
174 | static struct dvb_frontend_ops dtt200u_fe_ops = { | |
175 | .info = { | |
d590f9c2 | 176 | .name = "WideView USB DVB-T", |
776338e1 JS |
177 | .type = FE_OFDM, |
178 | .frequency_min = 44250000, | |
179 | .frequency_max = 867250000, | |
180 | .frequency_stepsize = 250000, | |
181 | .caps = FE_CAN_INVERSION_AUTO | | |
182 | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 | | |
183 | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO | | |
184 | FE_CAN_QPSK | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO | | |
185 | FE_CAN_TRANSMISSION_MODE_AUTO | | |
186 | FE_CAN_GUARD_INTERVAL_AUTO | | |
187 | FE_CAN_RECOVER | | |
188 | FE_CAN_HIERARCHY_AUTO, | |
189 | }, | |
190 | ||
191 | .release = dtt200u_fe_release, | |
192 | ||
193 | .init = dtt200u_fe_init, | |
194 | .sleep = dtt200u_fe_sleep, | |
195 | ||
196 | .set_frontend = dtt200u_fe_set_frontend, | |
197 | .get_frontend = dtt200u_fe_get_frontend, | |
198 | .get_tune_settings = dtt200u_fe_get_tune_settings, | |
199 | ||
200 | .read_status = dtt200u_fe_read_status, | |
201 | .read_ber = dtt200u_fe_read_ber, | |
202 | .read_signal_strength = dtt200u_fe_read_signal_strength, | |
203 | .read_snr = dtt200u_fe_read_snr, | |
204 | .read_ucblocks = dtt200u_fe_read_unc_blocks, | |
205 | }; |