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authorMauro Carvalho Chehab <mchehab@osg.samsung.com>2014-10-09 17:00:54 (GMT)
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2014-10-09 17:00:54 (GMT)
commita66d05d504a24894a8fdf11e4569752f313e5764 (patch)
tree2bb40c1f6c301b231d7aeaad08c190aa5a82ba1f /drivers/media/dvb-frontends/as102_fe.c
parentbfe01a5ba2490f299e1d2d5508cbbbadd897bbe9 (diff)
parent5563caaf8b8cd22e35997d5d74cb3609df86b223 (diff)
Merge branch 'patchwork' into v4l_for_linusmedia/v3.18-rc1
* patchwork: (544 commits) [media] ir-hix5hd2: fix build on c6x arch [media] pt3: fix DTV FE I2C driver load error paths Revert "[media] media: em28xx - remove reset_resume interface" [media] exynos4-is: fix some warnings when compiling on arm64 [media] usb drivers: use %zu instead of %zd [media] pci drivers: use %zu instead of %zd [media] dvb-frontends: use %zu instead of %zd [media] s5p-mfc: Fix several printk warnings [media] s5p_mfc_opr: Fix warnings [media] ti-vpe: Fix typecast [media] s3c-camif: fix dma_addr_t printks [media] s5p_mfc_opr_v6: get rid of warnings when compiled with 64 bits [media] s5p_mfc_opr_v5: Fix lots of warnings on x86_64 [media] em28xx: Fix identation [media] drxd: remove a dead code [media] saa7146: remove return after BUG() [media] cx88: remove return after BUG() [media] cx88: fix cards table CodingStyle [media] radio-sf16fmr2: declare some structs as static [media] radio-sf16fmi: declare pnp_attached as static ... Conflicts: Documentation/DocBook/media/v4l/compat.xml
Diffstat (limited to 'drivers/media/dvb-frontends/as102_fe.c')
-rw-r--r--drivers/media/dvb-frontends/as102_fe.c480
1 files changed, 480 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/as102_fe.c b/drivers/media/dvb-frontends/as102_fe.c
new file mode 100644
index 0000000..4936658
--- /dev/null
+++ b/drivers/media/dvb-frontends/as102_fe.c
@@ -0,0 +1,480 @@
+/*
+ * Abilis Systems Single DVB-T Receiver
+ * Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
+ * Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
+ *
+ * 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, 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.
+ */
+
+#include <dvb_frontend.h>
+
+#include "as102_fe.h"
+
+struct as102_state {
+ struct dvb_frontend frontend;
+ struct as10x_demod_stats demod_stats;
+
+ const struct as102_fe_ops *ops;
+ void *priv;
+ uint8_t elna_cfg;
+
+ /* signal strength */
+ uint16_t signal_strength;
+ /* bit error rate */
+ uint32_t ber;
+};
+
+static uint8_t as102_fe_get_code_rate(fe_code_rate_t arg)
+{
+ uint8_t c;
+
+ switch (arg) {
+ case FEC_1_2:
+ c = CODE_RATE_1_2;
+ break;
+ case FEC_2_3:
+ c = CODE_RATE_2_3;
+ break;
+ case FEC_3_4:
+ c = CODE_RATE_3_4;
+ break;
+ case FEC_5_6:
+ c = CODE_RATE_5_6;
+ break;
+ case FEC_7_8:
+ c = CODE_RATE_7_8;
+ break;
+ default:
+ c = CODE_RATE_UNKNOWN;
+ break;
+ }
+
+ return c;
+}
+
+static int as102_fe_set_frontend(struct dvb_frontend *fe)
+{
+ struct as102_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ struct as10x_tune_args tune_args = { 0 };
+
+ /* set frequency */
+ tune_args.freq = c->frequency / 1000;
+
+ /* fix interleaving_mode */
+ tune_args.interleaving_mode = INTLV_NATIVE;
+
+ switch (c->bandwidth_hz) {
+ case 8000000:
+ tune_args.bandwidth = BW_8_MHZ;
+ break;
+ case 7000000:
+ tune_args.bandwidth = BW_7_MHZ;
+ break;
+ case 6000000:
+ tune_args.bandwidth = BW_6_MHZ;
+ break;
+ default:
+ tune_args.bandwidth = BW_8_MHZ;
+ }
+
+ switch (c->guard_interval) {
+ case GUARD_INTERVAL_1_32:
+ tune_args.guard_interval = GUARD_INT_1_32;
+ break;
+ case GUARD_INTERVAL_1_16:
+ tune_args.guard_interval = GUARD_INT_1_16;
+ break;
+ case GUARD_INTERVAL_1_8:
+ tune_args.guard_interval = GUARD_INT_1_8;
+ break;
+ case GUARD_INTERVAL_1_4:
+ tune_args.guard_interval = GUARD_INT_1_4;
+ break;
+ case GUARD_INTERVAL_AUTO:
+ default:
+ tune_args.guard_interval = GUARD_UNKNOWN;
+ break;
+ }
+
+ switch (c->modulation) {
+ case QPSK:
+ tune_args.modulation = CONST_QPSK;
+ break;
+ case QAM_16:
+ tune_args.modulation = CONST_QAM16;
+ break;
+ case QAM_64:
+ tune_args.modulation = CONST_QAM64;
+ break;
+ default:
+ tune_args.modulation = CONST_UNKNOWN;
+ break;
+ }
+
+ switch (c->transmission_mode) {
+ case TRANSMISSION_MODE_2K:
+ tune_args.transmission_mode = TRANS_MODE_2K;
+ break;
+ case TRANSMISSION_MODE_8K:
+ tune_args.transmission_mode = TRANS_MODE_8K;
+ break;
+ default:
+ tune_args.transmission_mode = TRANS_MODE_UNKNOWN;
+ }
+
+ switch (c->hierarchy) {
+ case HIERARCHY_NONE:
+ tune_args.hierarchy = HIER_NONE;
+ break;
+ case HIERARCHY_1:
+ tune_args.hierarchy = HIER_ALPHA_1;
+ break;
+ case HIERARCHY_2:
+ tune_args.hierarchy = HIER_ALPHA_2;
+ break;
+ case HIERARCHY_4:
+ tune_args.hierarchy = HIER_ALPHA_4;
+ break;
+ case HIERARCHY_AUTO:
+ tune_args.hierarchy = HIER_UNKNOWN;
+ break;
+ }
+
+ pr_debug("as102: tuner parameters: freq: %d bw: 0x%02x gi: 0x%02x\n",
+ c->frequency,
+ tune_args.bandwidth,
+ tune_args.guard_interval);
+
+ /*
+ * Detect a hierarchy selection
+ * if HP/LP are both set to FEC_NONE, HP will be selected.
+ */
+ if ((tune_args.hierarchy != HIER_NONE) &&
+ ((c->code_rate_LP == FEC_NONE) ||
+ (c->code_rate_HP == FEC_NONE))) {
+
+ if (c->code_rate_LP == FEC_NONE) {
+ tune_args.hier_select = HIER_HIGH_PRIORITY;
+ tune_args.code_rate =
+ as102_fe_get_code_rate(c->code_rate_HP);
+ }
+
+ if (c->code_rate_HP == FEC_NONE) {
+ tune_args.hier_select = HIER_LOW_PRIORITY;
+ tune_args.code_rate =
+ as102_fe_get_code_rate(c->code_rate_LP);
+ }
+
+ pr_debug("as102: \thierarchy: 0x%02x selected: %s code_rate_%s: 0x%02x\n",
+ tune_args.hierarchy,
+ tune_args.hier_select == HIER_HIGH_PRIORITY ?
+ "HP" : "LP",
+ tune_args.hier_select == HIER_HIGH_PRIORITY ?
+ "HP" : "LP",
+ tune_args.code_rate);
+ } else {
+ tune_args.code_rate =
+ as102_fe_get_code_rate(c->code_rate_HP);
+ }
+
+ /* Set frontend arguments */
+ return state->ops->set_tune(state->priv, &tune_args);
+}
+
+static int as102_fe_get_frontend(struct dvb_frontend *fe)
+{
+ struct as102_state *state = fe->demodulator_priv;
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret = 0;
+ struct as10x_tps tps = { 0 };
+
+ /* send abilis command: GET_TPS */
+ ret = state->ops->get_tps(state->priv, &tps);
+ if (ret < 0)
+ return ret;
+
+ /* extract constellation */
+ switch (tps.modulation) {
+ case CONST_QPSK:
+ c->modulation = QPSK;
+ break;
+ case CONST_QAM16:
+ c->modulation = QAM_16;
+ break;
+ case CONST_QAM64:
+ c->modulation = QAM_64;
+ break;
+ }
+
+ /* extract hierarchy */
+ switch (tps.hierarchy) {
+ case HIER_NONE:
+ c->hierarchy = HIERARCHY_NONE;
+ break;
+ case HIER_ALPHA_1:
+ c->hierarchy = HIERARCHY_1;
+ break;
+ case HIER_ALPHA_2:
+ c->hierarchy = HIERARCHY_2;
+ break;
+ case HIER_ALPHA_4:
+ c->hierarchy = HIERARCHY_4;
+ break;
+ }
+
+ /* extract code rate HP */
+ switch (tps.code_rate_HP) {
+ case CODE_RATE_1_2:
+ c->code_rate_HP = FEC_1_2;
+ break;
+ case CODE_RATE_2_3:
+ c->code_rate_HP = FEC_2_3;
+ break;
+ case CODE_RATE_3_4:
+ c->code_rate_HP = FEC_3_4;
+ break;
+ case CODE_RATE_5_6:
+ c->code_rate_HP = FEC_5_6;
+ break;
+ case CODE_RATE_7_8:
+ c->code_rate_HP = FEC_7_8;
+ break;
+ }
+
+ /* extract code rate LP */
+ switch (tps.code_rate_LP) {
+ case CODE_RATE_1_2:
+ c->code_rate_LP = FEC_1_2;
+ break;
+ case CODE_RATE_2_3:
+ c->code_rate_LP = FEC_2_3;
+ break;
+ case CODE_RATE_3_4:
+ c->code_rate_LP = FEC_3_4;
+ break;
+ case CODE_RATE_5_6:
+ c->code_rate_LP = FEC_5_6;
+ break;
+ case CODE_RATE_7_8:
+ c->code_rate_LP = FEC_7_8;
+ break;
+ }
+
+ /* extract guard interval */
+ switch (tps.guard_interval) {
+ case GUARD_INT_1_32:
+ c->guard_interval = GUARD_INTERVAL_1_32;
+ break;
+ case GUARD_INT_1_16:
+ c->guard_interval = GUARD_INTERVAL_1_16;
+ break;
+ case GUARD_INT_1_8:
+ c->guard_interval = GUARD_INTERVAL_1_8;
+ break;
+ case GUARD_INT_1_4:
+ c->guard_interval = GUARD_INTERVAL_1_4;
+ break;
+ }
+
+ /* extract transmission mode */
+ switch (tps.transmission_mode) {
+ case TRANS_MODE_2K:
+ c->transmission_mode = TRANSMISSION_MODE_2K;
+ break;
+ case TRANS_MODE_8K:
+ c->transmission_mode = TRANSMISSION_MODE_8K;
+ break;
+ }
+
+ return 0;
+}
+
+static int as102_fe_get_tune_settings(struct dvb_frontend *fe,
+ struct dvb_frontend_tune_settings *settings) {
+
+ settings->min_delay_ms = 1000;
+
+ return 0;
+}
+
+static int as102_fe_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+ int ret = 0;
+ struct as102_state *state = fe->demodulator_priv;
+ struct as10x_tune_status tstate = { 0 };
+
+ /* send abilis command: GET_TUNE_STATUS */
+ ret = state->ops->get_status(state->priv, &tstate);
+ if (ret < 0)
+ return ret;
+
+ state->signal_strength = tstate.signal_strength;
+ state->ber = tstate.BER;
+
+ switch (tstate.tune_state) {
+ case TUNE_STATUS_SIGNAL_DVB_OK:
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
+ break;
+ case TUNE_STATUS_STREAM_DETECTED:
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC |
+ FE_HAS_VITERBI;
+ break;
+ case TUNE_STATUS_STREAM_TUNED:
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_SYNC |
+ FE_HAS_LOCK | FE_HAS_VITERBI;
+ break;
+ default:
+ *status = TUNE_STATUS_NOT_TUNED;
+ }
+
+ pr_debug("as102: tuner status: 0x%02x, strength %d, per: %d, ber: %d\n",
+ tstate.tune_state, tstate.signal_strength,
+ tstate.PER, tstate.BER);
+
+ if (!(*status & FE_HAS_LOCK)) {
+ memset(&state->demod_stats, 0, sizeof(state->demod_stats));
+ return 0;
+ }
+
+ ret = state->ops->get_stats(state->priv, &state->demod_stats);
+ if (ret < 0)
+ memset(&state->demod_stats, 0, sizeof(state->demod_stats));
+
+ return ret;
+}
+
+/*
+ * Note:
+ * - in AS102 SNR=MER
+ * - the SNR will be returned in linear terms, i.e. not in dB
+ * - the accuracy equals ±2dB for a SNR range from 4dB to 30dB
+ * - the accuracy is >2dB for SNR values outside this range
+ */
+static int as102_fe_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+ struct as102_state *state = fe->demodulator_priv;
+
+ *snr = state->demod_stats.mer;
+
+ return 0;
+}
+
+static int as102_fe_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ struct as102_state *state = fe->demodulator_priv;
+
+ *ber = state->ber;
+
+ return 0;
+}
+
+static int as102_fe_read_signal_strength(struct dvb_frontend *fe,
+ u16 *strength)
+{
+ struct as102_state *state = fe->demodulator_priv;
+
+ *strength = (((0xffff * 400) * state->signal_strength + 41000) * 2);
+
+ return 0;
+}
+
+static int as102_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+ struct as102_state *state = fe->demodulator_priv;
+
+ if (state->demod_stats.has_started)
+ *ucblocks = state->demod_stats.bad_frame_count;
+ else
+ *ucblocks = 0;
+
+ return 0;
+}
+
+static int as102_fe_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
+{
+ struct as102_state *state = fe->demodulator_priv;
+
+ return state->ops->stream_ctrl(state->priv, acquire,
+ state->elna_cfg);
+}
+
+static void as102_fe_release(struct dvb_frontend *fe)
+{
+ struct as102_state *state = fe->demodulator_priv;
+
+ kfree(state);
+}
+
+
+static struct dvb_frontend_ops as102_fe_ops = {
+ .delsys = { SYS_DVBT },
+ .info = {
+ .name = "Abilis AS102 DVB-T",
+ .frequency_min = 174000000,
+ .frequency_max = 862000000,
+ .frequency_stepsize = 166667,
+ .caps = FE_CAN_INVERSION_AUTO
+ | FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4
+ | FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO
+ | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QPSK
+ | FE_CAN_QAM_AUTO
+ | FE_CAN_TRANSMISSION_MODE_AUTO
+ | FE_CAN_GUARD_INTERVAL_AUTO
+ | FE_CAN_HIERARCHY_AUTO
+ | FE_CAN_RECOVER
+ | FE_CAN_MUTE_TS
+ },
+
+ .set_frontend = as102_fe_set_frontend,
+ .get_frontend = as102_fe_get_frontend,
+ .get_tune_settings = as102_fe_get_tune_settings,
+
+ .read_status = as102_fe_read_status,
+ .read_snr = as102_fe_read_snr,
+ .read_ber = as102_fe_read_ber,
+ .read_signal_strength = as102_fe_read_signal_strength,
+ .read_ucblocks = as102_fe_read_ucblocks,
+ .ts_bus_ctrl = as102_fe_ts_bus_ctrl,
+ .release = as102_fe_release,
+};
+
+struct dvb_frontend *as102_attach(const char *name,
+ const struct as102_fe_ops *ops,
+ void *priv,
+ uint8_t elna_cfg)
+{
+ struct as102_state *state;
+ struct dvb_frontend *fe;
+
+ state = kzalloc(sizeof(struct as102_state), GFP_KERNEL);
+ if (state == NULL) {
+ pr_err("%s: unable to allocate memory for state\n", __func__);
+ return NULL;
+ }
+ fe = &state->frontend;
+ fe->demodulator_priv = state;
+ state->ops = ops;
+ state->priv = priv;
+ state->elna_cfg = elna_cfg;
+
+ /* init frontend callback ops */
+ memcpy(&fe->ops, &as102_fe_ops, sizeof(struct dvb_frontend_ops));
+ strncpy(fe->ops.info.name, name, sizeof(fe->ops.info.name));
+
+ return fe;
+
+}
+EXPORT_SYMBOL_GPL(as102_attach);
+
+MODULE_DESCRIPTION("as102-fe");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Pierrick Hascoet <pierrick.hascoet@abilis.com>");

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