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path: root/drivers/media/dvb-frontends/cxd2820r_t.c
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Diffstat (limited to 'drivers/media/dvb-frontends/cxd2820r_t.c')
-rw-r--r--drivers/media/dvb-frontends/cxd2820r_t.c452
1 files changed, 452 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/cxd2820r_t.c b/drivers/media/dvb-frontends/cxd2820r_t.c
new file mode 100644
index 00000000000..e5dd22bc16b
--- /dev/null
+++ b/drivers/media/dvb-frontends/cxd2820r_t.c
@@ -0,0 +1,452 @@
+/*
+ * Sony CXD2820R demodulator driver
+ *
+ * Copyright (C) 2010 Antti Palosaari <crope@iki.fi>
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+
+#include "cxd2820r_priv.h"
+
+int cxd2820r_set_frontend_t(struct dvb_frontend *fe)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret, i, bw_i;
+ u32 if_freq, if_ctl;
+ u64 num;
+ u8 buf[3], bw_param;
+ u8 bw_params1[][5] = {
+ { 0x17, 0xea, 0xaa, 0xaa, 0xaa }, /* 6 MHz */
+ { 0x14, 0x80, 0x00, 0x00, 0x00 }, /* 7 MHz */
+ { 0x11, 0xf0, 0x00, 0x00, 0x00 }, /* 8 MHz */
+ };
+ u8 bw_params2[][2] = {
+ { 0x1f, 0xdc }, /* 6 MHz */
+ { 0x12, 0xf8 }, /* 7 MHz */
+ { 0x01, 0xe0 }, /* 8 MHz */
+ };
+ struct reg_val_mask tab[] = {
+ { 0x00080, 0x00, 0xff },
+ { 0x00081, 0x03, 0xff },
+ { 0x00085, 0x07, 0xff },
+ { 0x00088, 0x01, 0xff },
+
+ { 0x00070, priv->cfg.ts_mode, 0xff },
+ { 0x000cb, priv->cfg.if_agc_polarity << 6, 0x40 },
+ { 0x000a5, 0x00, 0x01 },
+ { 0x00082, 0x20, 0x60 },
+ { 0x000c2, 0xc3, 0xff },
+ { 0x0016a, 0x50, 0xff },
+ { 0x00427, 0x41, 0xff },
+ };
+
+ dbg("%s: RF=%d BW=%d", __func__, c->frequency, c->bandwidth_hz);
+
+ switch (c->bandwidth_hz) {
+ case 6000000:
+ bw_i = 0;
+ bw_param = 2;
+ break;
+ case 7000000:
+ bw_i = 1;
+ bw_param = 1;
+ break;
+ case 8000000:
+ bw_i = 2;
+ bw_param = 0;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* update GPIOs */
+ ret = cxd2820r_gpio(fe);
+ if (ret)
+ goto error;
+
+ /* program tuner */
+ if (fe->ops.tuner_ops.set_params)
+ fe->ops.tuner_ops.set_params(fe);
+
+ if (priv->delivery_system != SYS_DVBT) {
+ for (i = 0; i < ARRAY_SIZE(tab); i++) {
+ ret = cxd2820r_wr_reg_mask(priv, tab[i].reg,
+ tab[i].val, tab[i].mask);
+ if (ret)
+ goto error;
+ }
+ }
+
+ priv->delivery_system = SYS_DVBT;
+ priv->ber_running = 0; /* tune stops BER counter */
+
+ /* program IF frequency */
+ if (fe->ops.tuner_ops.get_if_frequency) {
+ ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_freq);
+ if (ret)
+ goto error;
+ } else
+ if_freq = 0;
+
+ dbg("%s: if_freq=%d", __func__, if_freq);
+
+ num = if_freq / 1000; /* Hz => kHz */
+ num *= 0x1000000;
+ if_ctl = cxd2820r_div_u64_round_closest(num, 41000);
+ buf[0] = ((if_ctl >> 16) & 0xff);
+ buf[1] = ((if_ctl >> 8) & 0xff);
+ buf[2] = ((if_ctl >> 0) & 0xff);
+
+ ret = cxd2820r_wr_regs(priv, 0x000b6, buf, 3);
+ if (ret)
+ goto error;
+
+ ret = cxd2820r_wr_regs(priv, 0x0009f, bw_params1[bw_i], 5);
+ if (ret)
+ goto error;
+
+ ret = cxd2820r_wr_reg_mask(priv, 0x000d7, bw_param << 6, 0xc0);
+ if (ret)
+ goto error;
+
+ ret = cxd2820r_wr_regs(priv, 0x000d9, bw_params2[bw_i], 2);
+ if (ret)
+ goto error;
+
+ ret = cxd2820r_wr_reg(priv, 0x000ff, 0x08);
+ if (ret)
+ goto error;
+
+ ret = cxd2820r_wr_reg(priv, 0x000fe, 0x01);
+ if (ret)
+ goto error;
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_get_frontend_t(struct dvb_frontend *fe)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret;
+ u8 buf[2];
+
+ ret = cxd2820r_rd_regs(priv, 0x0002f, buf, sizeof(buf));
+ if (ret)
+ goto error;
+
+ switch ((buf[0] >> 6) & 0x03) {
+ case 0:
+ c->modulation = QPSK;
+ break;
+ case 1:
+ c->modulation = QAM_16;
+ break;
+ case 2:
+ c->modulation = QAM_64;
+ break;
+ }
+
+ switch ((buf[1] >> 1) & 0x03) {
+ case 0:
+ c->transmission_mode = TRANSMISSION_MODE_2K;
+ break;
+ case 1:
+ c->transmission_mode = TRANSMISSION_MODE_8K;
+ break;
+ }
+
+ switch ((buf[1] >> 3) & 0x03) {
+ case 0:
+ c->guard_interval = GUARD_INTERVAL_1_32;
+ break;
+ case 1:
+ c->guard_interval = GUARD_INTERVAL_1_16;
+ break;
+ case 2:
+ c->guard_interval = GUARD_INTERVAL_1_8;
+ break;
+ case 3:
+ c->guard_interval = GUARD_INTERVAL_1_4;
+ break;
+ }
+
+ switch ((buf[0] >> 3) & 0x07) {
+ case 0:
+ c->hierarchy = HIERARCHY_NONE;
+ break;
+ case 1:
+ c->hierarchy = HIERARCHY_1;
+ break;
+ case 2:
+ c->hierarchy = HIERARCHY_2;
+ break;
+ case 3:
+ c->hierarchy = HIERARCHY_4;
+ break;
+ }
+
+ switch ((buf[0] >> 0) & 0x07) {
+ case 0:
+ c->code_rate_HP = FEC_1_2;
+ break;
+ case 1:
+ c->code_rate_HP = FEC_2_3;
+ break;
+ case 2:
+ c->code_rate_HP = FEC_3_4;
+ break;
+ case 3:
+ c->code_rate_HP = FEC_5_6;
+ break;
+ case 4:
+ c->code_rate_HP = FEC_7_8;
+ break;
+ }
+
+ switch ((buf[1] >> 5) & 0x07) {
+ case 0:
+ c->code_rate_LP = FEC_1_2;
+ break;
+ case 1:
+ c->code_rate_LP = FEC_2_3;
+ break;
+ case 2:
+ c->code_rate_LP = FEC_3_4;
+ break;
+ case 3:
+ c->code_rate_LP = FEC_5_6;
+ break;
+ case 4:
+ c->code_rate_LP = FEC_7_8;
+ break;
+ }
+
+ ret = cxd2820r_rd_reg(priv, 0x007c6, &buf[0]);
+ if (ret)
+ goto error;
+
+ switch ((buf[0] >> 0) & 0x01) {
+ case 0:
+ c->inversion = INVERSION_OFF;
+ break;
+ case 1:
+ c->inversion = INVERSION_ON;
+ break;
+ }
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_read_ber_t(struct dvb_frontend *fe, u32 *ber)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ int ret;
+ u8 buf[3], start_ber = 0;
+ *ber = 0;
+
+ if (priv->ber_running) {
+ ret = cxd2820r_rd_regs(priv, 0x00076, buf, sizeof(buf));
+ if (ret)
+ goto error;
+
+ if ((buf[2] >> 7) & 0x01 || (buf[2] >> 4) & 0x01) {
+ *ber = (buf[2] & 0x0f) << 16 | buf[1] << 8 | buf[0];
+ start_ber = 1;
+ }
+ } else {
+ priv->ber_running = 1;
+ start_ber = 1;
+ }
+
+ if (start_ber) {
+ /* (re)start BER */
+ ret = cxd2820r_wr_reg(priv, 0x00079, 0x01);
+ if (ret)
+ goto error;
+ }
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_read_signal_strength_t(struct dvb_frontend *fe,
+ u16 *strength)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ int ret;
+ u8 buf[2];
+ u16 tmp;
+
+ ret = cxd2820r_rd_regs(priv, 0x00026, buf, sizeof(buf));
+ if (ret)
+ goto error;
+
+ tmp = (buf[0] & 0x0f) << 8 | buf[1];
+ tmp = ~tmp & 0x0fff;
+
+ /* scale value to 0x0000-0xffff from 0x0000-0x0fff */
+ *strength = tmp * 0xffff / 0x0fff;
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_read_snr_t(struct dvb_frontend *fe, u16 *snr)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ int ret;
+ u8 buf[2];
+ u16 tmp;
+ /* report SNR in dB * 10 */
+
+ ret = cxd2820r_rd_regs(priv, 0x00028, buf, sizeof(buf));
+ if (ret)
+ goto error;
+
+ tmp = (buf[0] & 0x1f) << 8 | buf[1];
+ #define CXD2820R_LOG10_8_24 15151336 /* log10(8) << 24 */
+ if (tmp)
+ *snr = (intlog10(tmp) - CXD2820R_LOG10_8_24) / ((1 << 24)
+ / 100);
+ else
+ *snr = 0;
+
+ dbg("%s: dBx10=%d val=%04x", __func__, *snr, tmp);
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_read_ucblocks_t(struct dvb_frontend *fe, u32 *ucblocks)
+{
+ *ucblocks = 0;
+ /* no way to read ? */
+ return 0;
+}
+
+int cxd2820r_read_status_t(struct dvb_frontend *fe, fe_status_t *status)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ int ret;
+ u8 buf[4];
+ *status = 0;
+
+ ret = cxd2820r_rd_reg(priv, 0x00010, &buf[0]);
+ if (ret)
+ goto error;
+
+ if ((buf[0] & 0x07) == 6) {
+ ret = cxd2820r_rd_reg(priv, 0x00073, &buf[1]);
+ if (ret)
+ goto error;
+
+ if (((buf[1] >> 3) & 0x01) == 1) {
+ *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+ } else {
+ *status |= FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC;
+ }
+ } else {
+ ret = cxd2820r_rd_reg(priv, 0x00014, &buf[2]);
+ if (ret)
+ goto error;
+
+ if ((buf[2] & 0x0f) >= 4) {
+ ret = cxd2820r_rd_reg(priv, 0x00a14, &buf[3]);
+ if (ret)
+ goto error;
+
+ if (((buf[3] >> 4) & 0x01) == 1)
+ *status |= FE_HAS_SIGNAL;
+ }
+ }
+
+ dbg("%s: lock=%*ph", __func__, 4, buf);
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_init_t(struct dvb_frontend *fe)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ int ret;
+
+ ret = cxd2820r_wr_reg(priv, 0x00085, 0x07);
+ if (ret)
+ goto error;
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_sleep_t(struct dvb_frontend *fe)
+{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
+ int ret, i;
+ struct reg_val_mask tab[] = {
+ { 0x000ff, 0x1f, 0xff },
+ { 0x00085, 0x00, 0xff },
+ { 0x00088, 0x01, 0xff },
+ { 0x00081, 0x00, 0xff },
+ { 0x00080, 0x00, 0xff },
+ };
+
+ dbg("%s", __func__);
+
+ priv->delivery_system = SYS_UNDEFINED;
+
+ for (i = 0; i < ARRAY_SIZE(tab); i++) {
+ ret = cxd2820r_wr_reg_mask(priv, tab[i].reg, tab[i].val,
+ tab[i].mask);
+ if (ret)
+ goto error;
+ }
+
+ return ret;
+error:
+ dbg("%s: failed:%d", __func__, ret);
+ return ret;
+}
+
+int cxd2820r_get_tune_settings_t(struct dvb_frontend *fe,
+ struct dvb_frontend_tune_settings *s)
+{
+ s->min_delay_ms = 500;
+ s->step_size = fe->ops.info.frequency_stepsize * 2;
+ s->max_drift = (fe->ops.info.frequency_stepsize * 2) + 1;
+
+ return 0;
+}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-27 09:38:30 +0000