2 * Sony CXD2820R demodulator driver
4 * Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
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.
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 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include "cxd2820r_priv.h"
24 int cxd2820r_set_frontend_c(struct dvb_frontend *fe,
25 struct dvb_frontend_parameters *params)
27 struct cxd2820r_priv *priv = fe->demodulator_priv;
28 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
33 struct reg_val_mask tab[] = {
34 { 0x00080, 0x01, 0xff },
35 { 0x00081, 0x05, 0xff },
36 { 0x00085, 0x07, 0xff },
37 { 0x00088, 0x01, 0xff },
39 { 0x00082, 0x20, 0x60 },
40 { 0x1016a, 0x48, 0xff },
41 { 0x100a5, 0x00, 0x01 },
42 { 0x10020, 0x06, 0x07 },
43 { 0x10059, 0x50, 0xff },
44 { 0x10087, 0x0c, 0x3c },
45 { 0x1008b, 0x07, 0xff },
46 { 0x1001f, priv->cfg.if_agc_polarity << 7, 0x80 },
47 { 0x10070, priv->cfg.ts_mode, 0xff },
50 dbg("%s: RF=%d SR=%d", __func__, c->frequency, c->symbol_rate);
53 ret = cxd2820r_gpio(fe);
58 if (fe->ops.tuner_ops.set_params)
59 fe->ops.tuner_ops.set_params(fe, params);
61 if (priv->delivery_system != SYS_DVBC_ANNEX_AC) {
62 for (i = 0; i < ARRAY_SIZE(tab); i++) {
63 ret = cxd2820r_wr_reg_mask(priv, tab[i].reg,
64 tab[i].val, tab[i].mask);
70 priv->delivery_system = SYS_DVBC_ANNEX_AC;
71 priv->ber_running = 0; /* tune stops BER counter */
73 num = priv->cfg.if_dvbc;
75 if_ctl = cxd2820r_div_u64_round_closest(num, 41000);
76 buf[0] = (if_ctl >> 8) & 0x3f;
77 buf[1] = (if_ctl >> 0) & 0xff;
79 ret = cxd2820r_wr_regs(priv, 0x10042, buf, 2);
83 ret = cxd2820r_wr_reg(priv, 0x000ff, 0x08);
87 ret = cxd2820r_wr_reg(priv, 0x000fe, 0x01);
93 dbg("%s: failed:%d", __func__, ret);
97 int cxd2820r_get_frontend_c(struct dvb_frontend *fe,
98 struct dvb_frontend_parameters *p)
100 struct cxd2820r_priv *priv = fe->demodulator_priv;
101 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
105 ret = cxd2820r_rd_regs(priv, 0x1001a, buf, 2);
109 c->symbol_rate = 2500 * ((buf[0] & 0x0f) << 8 | buf[1]);
111 ret = cxd2820r_rd_reg(priv, 0x10019, &buf[0]);
115 switch ((buf[0] >> 0) & 0x03) {
117 c->modulation = QAM_16;
120 c->modulation = QAM_32;
123 c->modulation = QAM_64;
126 c->modulation = QAM_128;
129 c->modulation = QAM_256;
133 switch ((buf[0] >> 7) & 0x01) {
135 c->inversion = INVERSION_OFF;
138 c->inversion = INVERSION_ON;
144 dbg("%s: failed:%d", __func__, ret);
148 int cxd2820r_read_ber_c(struct dvb_frontend *fe, u32 *ber)
150 struct cxd2820r_priv *priv = fe->demodulator_priv;
152 u8 buf[3], start_ber = 0;
155 if (priv->ber_running) {
156 ret = cxd2820r_rd_regs(priv, 0x10076, buf, sizeof(buf));
160 if ((buf[2] >> 7) & 0x01 || (buf[2] >> 4) & 0x01) {
161 *ber = (buf[2] & 0x0f) << 16 | buf[1] << 8 | buf[0];
165 priv->ber_running = 1;
171 ret = cxd2820r_wr_reg(priv, 0x10079, 0x01);
178 dbg("%s: failed:%d", __func__, ret);
182 int cxd2820r_read_signal_strength_c(struct dvb_frontend *fe,
185 struct cxd2820r_priv *priv = fe->demodulator_priv;
190 ret = cxd2820r_rd_regs(priv, 0x10049, buf, sizeof(buf));
194 tmp = (buf[0] & 0x03) << 8 | buf[1];
195 tmp = (~tmp & 0x03ff);
203 /* scale value to 0x0000-0xffff */
204 *strength = tmp * 0xffff / (350-0);
208 dbg("%s: failed:%d", __func__, ret);
212 int cxd2820r_read_snr_c(struct dvb_frontend *fe, u16 *snr)
214 struct cxd2820r_priv *priv = fe->demodulator_priv;
218 /* report SNR in dB * 10 */
220 ret = cxd2820r_rd_reg(priv, 0x10019, &tmp);
224 if (((tmp >> 0) & 0x03) % 2) {
232 ret = cxd2820r_rd_reg(priv, 0x1004d, &tmp);
236 #define CXD2820R_LOG2_E_24 24204406 /* log2(e) << 24 */
238 *snr = A * (intlog2(B / tmp) >> 5) / (CXD2820R_LOG2_E_24 >> 5)
245 dbg("%s: failed:%d", __func__, ret);
249 int cxd2820r_read_ucblocks_c(struct dvb_frontend *fe, u32 *ucblocks)
252 /* no way to read ? */
256 int cxd2820r_read_status_c(struct dvb_frontend *fe, fe_status_t *status)
258 struct cxd2820r_priv *priv = fe->demodulator_priv;
263 ret = cxd2820r_rd_regs(priv, 0x10088, buf, sizeof(buf));
267 if (((buf[0] >> 0) & 0x01) == 1) {
268 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
269 FE_HAS_VITERBI | FE_HAS_SYNC;
271 if (((buf[1] >> 3) & 0x01) == 1) {
272 *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
273 FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
277 dbg("%s: lock=%02x %02x", __func__, buf[0], buf[1]);
281 dbg("%s: failed:%d", __func__, ret);
285 int cxd2820r_init_c(struct dvb_frontend *fe)
287 struct cxd2820r_priv *priv = fe->demodulator_priv;
290 ret = cxd2820r_wr_reg(priv, 0x00085, 0x07);
296 dbg("%s: failed:%d", __func__, ret);
300 int cxd2820r_sleep_c(struct dvb_frontend *fe)
302 struct cxd2820r_priv *priv = fe->demodulator_priv;
304 struct reg_val_mask tab[] = {
305 { 0x000ff, 0x1f, 0xff },
306 { 0x00085, 0x00, 0xff },
307 { 0x00088, 0x01, 0xff },
308 { 0x00081, 0x00, 0xff },
309 { 0x00080, 0x00, 0xff },
314 priv->delivery_system = SYS_UNDEFINED;
316 for (i = 0; i < ARRAY_SIZE(tab); i++) {
317 ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, tab[i].val,
325 dbg("%s: failed:%d", __func__, ret);
329 int cxd2820r_get_tune_settings_c(struct dvb_frontend *fe,
330 struct dvb_frontend_tune_settings *s)
332 s->min_delay_ms = 500;
333 s->step_size = 0; /* no zigzag */