summaryrefslogtreecommitdiffstats
path: root/drivers/media/dvb-frontends/mn88473.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/dvb-frontends/mn88473.c')
-rw-r--r--drivers/media/dvb-frontends/mn88473.c766
1 files changed, 766 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/mn88473.c b/drivers/media/dvb-frontends/mn88473.c
new file mode 100644
index 0000000000..eb50591c0e
--- /dev/null
+++ b/drivers/media/dvb-frontends/mn88473.c
@@ -0,0 +1,766 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Panasonic MN88473 DVB-T/T2/C demodulator driver
+ *
+ * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
+ */
+
+#include "mn88473_priv.h"
+
+static int mn88473_get_tune_settings(struct dvb_frontend *fe,
+ struct dvb_frontend_tune_settings *s)
+{
+ s->min_delay_ms = 1000;
+ return 0;
+}
+
+static int mn88473_set_frontend(struct dvb_frontend *fe)
+{
+ struct i2c_client *client = fe->demodulator_priv;
+ struct mn88473_dev *dev = i2c_get_clientdata(client);
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret, i;
+ unsigned int uitmp;
+ u32 if_frequency;
+ u8 delivery_system_val, if_val[3], *conf_val_ptr;
+ u8 reg_bank2_2d_val, reg_bank0_d2_val;
+
+ dev_dbg(&client->dev,
+ "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
+ c->delivery_system, c->modulation, c->frequency,
+ c->bandwidth_hz, c->symbol_rate, c->inversion, c->stream_id);
+
+ if (!dev->active) {
+ ret = -EAGAIN;
+ goto err;
+ }
+
+ switch (c->delivery_system) {
+ case SYS_DVBT:
+ delivery_system_val = 0x02;
+ reg_bank2_2d_val = 0x23;
+ reg_bank0_d2_val = 0x2a;
+ break;
+ case SYS_DVBT2:
+ delivery_system_val = 0x03;
+ reg_bank2_2d_val = 0x3b;
+ reg_bank0_d2_val = 0x29;
+ break;
+ case SYS_DVBC_ANNEX_A:
+ delivery_system_val = 0x04;
+ reg_bank2_2d_val = 0x3b;
+ reg_bank0_d2_val = 0x29;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ switch (c->delivery_system) {
+ case SYS_DVBT:
+ case SYS_DVBT2:
+ switch (c->bandwidth_hz) {
+ case 6000000:
+ conf_val_ptr = "\xe9\x55\x55\x1c\x29\x1c\x29";
+ break;
+ case 7000000:
+ conf_val_ptr = "\xc8\x00\x00\x17\x0a\x17\x0a";
+ break;
+ case 8000000:
+ conf_val_ptr = "\xaf\x00\x00\x11\xec\x11\xec";
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+ break;
+ case SYS_DVBC_ANNEX_A:
+ conf_val_ptr = "\x10\xab\x0d\xae\x1d\x9d";
+ break;
+ default:
+ break;
+ }
+
+ /* Program tuner */
+ if (fe->ops.tuner_ops.set_params) {
+ ret = fe->ops.tuner_ops.set_params(fe);
+ if (ret)
+ goto err;
+ }
+
+ if (fe->ops.tuner_ops.get_if_frequency) {
+ ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
+ if (ret)
+ goto err;
+
+ dev_dbg(&client->dev, "get_if_frequency=%u\n", if_frequency);
+ } else {
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Calculate IF registers */
+ uitmp = DIV_ROUND_CLOSEST_ULL((u64) if_frequency * 0x1000000, dev->clk);
+ if_val[0] = (uitmp >> 16) & 0xff;
+ if_val[1] = (uitmp >> 8) & 0xff;
+ if_val[2] = (uitmp >> 0) & 0xff;
+
+ ret = regmap_write(dev->regmap[2], 0x05, 0x00);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0xfb, 0x13);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0xef, 0x13);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0xf9, 0x13);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x00, 0x18);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x01, 0x01);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x02, 0x21);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x0b, 0x00);
+ if (ret)
+ goto err;
+
+ for (i = 0; i < sizeof(if_val); i++) {
+ ret = regmap_write(dev->regmap[2], 0x10 + i, if_val[i]);
+ if (ret)
+ goto err;
+ }
+
+ switch (c->delivery_system) {
+ case SYS_DVBT:
+ case SYS_DVBT2:
+ for (i = 0; i < 7; i++) {
+ ret = regmap_write(dev->regmap[2], 0x13 + i,
+ conf_val_ptr[i]);
+ if (ret)
+ goto err;
+ }
+ break;
+ case SYS_DVBC_ANNEX_A:
+ ret = regmap_bulk_write(dev->regmap[1], 0x10, conf_val_ptr, 6);
+ if (ret)
+ goto err;
+ break;
+ default:
+ break;
+ }
+
+ ret = regmap_write(dev->regmap[2], 0x2d, reg_bank2_2d_val);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x2e, 0x00);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x56, 0x0d);
+ if (ret)
+ goto err;
+ ret = regmap_bulk_write(dev->regmap[0], 0x01,
+ "\xba\x13\x80\xba\x91\xdd\xe7\x28", 8);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x0a, 0x1a);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x13, 0x1f);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x19, 0x03);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x1d, 0xb0);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x2a, 0x72);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x2d, 0x00);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x3c, 0x00);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x3f, 0xf8);
+ if (ret)
+ goto err;
+ ret = regmap_bulk_write(dev->regmap[0], 0x40, "\xf4\x08", 2);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0xd2, reg_bank0_d2_val);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0xd4, 0x55);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[1], 0xbe, 0x08);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0xb2, 0x37);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0xd7, 0x04);
+ if (ret)
+ goto err;
+
+ /* PLP */
+ if (c->delivery_system == SYS_DVBT2) {
+ ret = regmap_write(dev->regmap[2], 0x36,
+ (c->stream_id == NO_STREAM_ID_FILTER) ? 0 :
+ c->stream_id );
+ if (ret)
+ goto err;
+ }
+
+ /* Reset FSM */
+ ret = regmap_write(dev->regmap[2], 0xf8, 0x9f);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int mn88473_read_status(struct dvb_frontend *fe, enum fe_status *status)
+{
+ struct i2c_client *client = fe->demodulator_priv;
+ struct mn88473_dev *dev = i2c_get_clientdata(client);
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret, i, stmp;
+ unsigned int utmp, utmp1, utmp2;
+ u8 buf[5];
+
+ if (!dev->active) {
+ ret = -EAGAIN;
+ goto err;
+ }
+
+ /* Lock detection */
+ switch (c->delivery_system) {
+ case SYS_DVBT:
+ ret = regmap_read(dev->regmap[0], 0x62, &utmp);
+ if (ret)
+ goto err;
+
+ if (!(utmp & 0xa0)) {
+ if ((utmp & 0x0f) >= 0x09)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC |
+ FE_HAS_LOCK;
+ else if ((utmp & 0x0f) >= 0x03)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
+ } else {
+ *status = 0;
+ }
+ break;
+ case SYS_DVBT2:
+ ret = regmap_read(dev->regmap[2], 0x8b, &utmp);
+ if (ret)
+ goto err;
+
+ if (!(utmp & 0x40)) {
+ if ((utmp & 0x0f) >= 0x0d)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC |
+ FE_HAS_LOCK;
+ else if ((utmp & 0x0f) >= 0x0a)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI;
+ else if ((utmp & 0x0f) >= 0x07)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
+ } else {
+ *status = 0;
+ }
+ break;
+ case SYS_DVBC_ANNEX_A:
+ ret = regmap_read(dev->regmap[1], 0x85, &utmp);
+ if (ret)
+ goto err;
+
+ if (!(utmp & 0x40)) {
+ ret = regmap_read(dev->regmap[1], 0x89, &utmp);
+ if (ret)
+ goto err;
+
+ if (utmp & 0x01)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC |
+ FE_HAS_LOCK;
+ } else {
+ *status = 0;
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* Signal strength */
+ if (*status & FE_HAS_SIGNAL) {
+ for (i = 0; i < 2; i++) {
+ ret = regmap_bulk_read(dev->regmap[2], 0x86 + i,
+ &buf[i], 1);
+ if (ret)
+ goto err;
+ }
+
+ /* AGCRD[15:6] gives us a 10bit value ([5:0] are always 0) */
+ utmp1 = buf[0] << 8 | buf[1] << 0 | buf[0] >> 2;
+ dev_dbg(&client->dev, "strength=%u\n", utmp1);
+
+ c->strength.stat[0].scale = FE_SCALE_RELATIVE;
+ c->strength.stat[0].uvalue = utmp1;
+ } else {
+ c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+
+ /* CNR */
+ if (*status & FE_HAS_VITERBI && c->delivery_system == SYS_DVBT) {
+ /* DVB-T CNR */
+ ret = regmap_bulk_read(dev->regmap[0], 0x8f, buf, 2);
+ if (ret)
+ goto err;
+
+ utmp = buf[0] << 8 | buf[1] << 0;
+ if (utmp) {
+ /* CNR[dB]: 10 * (log10(65536 / value) + 0.2) */
+ /* log10(65536) = 80807124, 0.2 = 3355443 */
+ stmp = div_u64(((u64)80807124 - intlog10(utmp)
+ + 3355443) * 10000, 1 << 24);
+ dev_dbg(&client->dev, "cnr=%d value=%u\n", stmp, utmp);
+ } else {
+ stmp = 0;
+ }
+
+ c->cnr.stat[0].svalue = stmp;
+ c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+ } else if (*status & FE_HAS_VITERBI &&
+ c->delivery_system == SYS_DVBT2) {
+ /* DVB-T2 CNR */
+ for (i = 0; i < 3; i++) {
+ ret = regmap_bulk_read(dev->regmap[2], 0xb7 + i,
+ &buf[i], 1);
+ if (ret)
+ goto err;
+ }
+
+ utmp = buf[1] << 8 | buf[2] << 0;
+ utmp1 = (buf[0] >> 2) & 0x01; /* 0=SISO, 1=MISO */
+ if (utmp) {
+ if (utmp1) {
+ /* CNR[dB]: 10 * (log10(16384 / value) - 0.6) */
+ /* log10(16384) = 70706234, 0.6 = 10066330 */
+ stmp = div_u64(((u64)70706234 - intlog10(utmp)
+ - 10066330) * 10000, 1 << 24);
+ dev_dbg(&client->dev, "cnr=%d value=%u MISO\n",
+ stmp, utmp);
+ } else {
+ /* CNR[dB]: 10 * (log10(65536 / value) + 0.2) */
+ /* log10(65536) = 80807124, 0.2 = 3355443 */
+ stmp = div_u64(((u64)80807124 - intlog10(utmp)
+ + 3355443) * 10000, 1 << 24);
+ dev_dbg(&client->dev, "cnr=%d value=%u SISO\n",
+ stmp, utmp);
+ }
+ } else {
+ stmp = 0;
+ }
+
+ c->cnr.stat[0].svalue = stmp;
+ c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+ } else if (*status & FE_HAS_VITERBI &&
+ c->delivery_system == SYS_DVBC_ANNEX_A) {
+ /* DVB-C CNR */
+ ret = regmap_bulk_read(dev->regmap[1], 0xa1, buf, 4);
+ if (ret)
+ goto err;
+
+ utmp1 = buf[0] << 8 | buf[1] << 0; /* signal */
+ utmp2 = buf[2] << 8 | buf[3] << 0; /* noise */
+ if (utmp1 && utmp2) {
+ /* CNR[dB]: 10 * log10(8 * (signal / noise)) */
+ /* log10(8) = 15151336 */
+ stmp = div_u64(((u64)15151336 + intlog10(utmp1)
+ - intlog10(utmp2)) * 10000, 1 << 24);
+ dev_dbg(&client->dev, "cnr=%d signal=%u noise=%u\n",
+ stmp, utmp1, utmp2);
+ } else {
+ stmp = 0;
+ }
+
+ c->cnr.stat[0].svalue = stmp;
+ c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+ } else {
+ c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+
+ /* BER */
+ if (*status & FE_HAS_LOCK && (c->delivery_system == SYS_DVBT ||
+ c->delivery_system == SYS_DVBC_ANNEX_A)) {
+ /* DVB-T & DVB-C BER */
+ ret = regmap_bulk_read(dev->regmap[0], 0x92, buf, 5);
+ if (ret)
+ goto err;
+
+ utmp1 = buf[0] << 16 | buf[1] << 8 | buf[2] << 0;
+ utmp2 = buf[3] << 8 | buf[4] << 0;
+ utmp2 = utmp2 * 8 * 204;
+ dev_dbg(&client->dev, "post_bit_error=%u post_bit_count=%u\n",
+ utmp1, utmp2);
+
+ c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_error.stat[0].uvalue += utmp1;
+ c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
+ c->post_bit_count.stat[0].uvalue += utmp2;
+ } else {
+ c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+
+ /* PER */
+ if (*status & FE_HAS_LOCK) {
+ ret = regmap_bulk_read(dev->regmap[0], 0xdd, buf, 4);
+ if (ret)
+ goto err;
+
+ utmp1 = buf[0] << 8 | buf[1] << 0;
+ utmp2 = buf[2] << 8 | buf[3] << 0;
+ dev_dbg(&client->dev, "block_error=%u block_count=%u\n",
+ utmp1, utmp2);
+
+ c->block_error.stat[0].scale = FE_SCALE_COUNTER;
+ c->block_error.stat[0].uvalue += utmp1;
+ c->block_count.stat[0].scale = FE_SCALE_COUNTER;
+ c->block_count.stat[0].uvalue += utmp2;
+ } else {
+ c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int mn88473_init(struct dvb_frontend *fe)
+{
+ struct i2c_client *client = fe->demodulator_priv;
+ struct mn88473_dev *dev = i2c_get_clientdata(client);
+ struct dtv_frontend_properties *c = &fe->dtv_property_cache;
+ int ret, len, remain;
+ unsigned int uitmp;
+ const struct firmware *fw;
+ const char *name = MN88473_FIRMWARE;
+
+ dev_dbg(&client->dev, "\n");
+
+ /* Check if firmware is already running */
+ ret = regmap_read(dev->regmap[0], 0xf5, &uitmp);
+ if (ret)
+ goto err;
+
+ if (!(uitmp & 0x01))
+ goto warm;
+
+ /* Request the firmware, this will block and timeout */
+ ret = request_firmware(&fw, name, &client->dev);
+ if (ret) {
+ dev_err(&client->dev, "firmware file '%s' not found\n", name);
+ goto err;
+ }
+
+ dev_info(&client->dev, "downloading firmware from file '%s'\n", name);
+
+ ret = regmap_write(dev->regmap[0], 0xf5, 0x03);
+ if (ret)
+ goto err_release_firmware;
+
+ for (remain = fw->size; remain > 0; remain -= (dev->i2c_wr_max - 1)) {
+ len = min(dev->i2c_wr_max - 1, remain);
+ ret = regmap_bulk_write(dev->regmap[0], 0xf6,
+ &fw->data[fw->size - remain], len);
+ if (ret) {
+ dev_err(&client->dev, "firmware download failed %d\n",
+ ret);
+ goto err_release_firmware;
+ }
+ }
+
+ release_firmware(fw);
+
+ /* Parity check of firmware */
+ ret = regmap_read(dev->regmap[0], 0xf8, &uitmp);
+ if (ret)
+ goto err;
+
+ if (uitmp & 0x10) {
+ dev_err(&client->dev, "firmware parity check failed\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
+ if (ret)
+ goto err;
+warm:
+ /* TS config */
+ ret = regmap_write(dev->regmap[2], 0x09, 0x08);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x08, 0x1d);
+ if (ret)
+ goto err;
+
+ dev->active = true;
+
+ /* init stats here to indicate which stats are supported */
+ c->strength.len = 1;
+ c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->cnr.len = 1;
+ c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_error.len = 1;
+ c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->post_bit_count.len = 1;
+ c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_error.len = 1;
+ c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ c->block_count.len = 1;
+ c->block_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+
+ return 0;
+err_release_firmware:
+ release_firmware(fw);
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int mn88473_sleep(struct dvb_frontend *fe)
+{
+ struct i2c_client *client = fe->demodulator_priv;
+ struct mn88473_dev *dev = i2c_get_clientdata(client);
+ int ret;
+
+ dev_dbg(&client->dev, "\n");
+
+ dev->active = false;
+
+ ret = regmap_write(dev->regmap[2], 0x05, 0x3e);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static const struct dvb_frontend_ops mn88473_ops = {
+ .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
+ .info = {
+ .name = "Panasonic MN88473",
+ .symbol_rate_min = 1000000,
+ .symbol_rate_max = 7200000,
+ .caps = 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_QPSK |
+ FE_CAN_QAM_16 |
+ FE_CAN_QAM_32 |
+ FE_CAN_QAM_64 |
+ FE_CAN_QAM_128 |
+ FE_CAN_QAM_256 |
+ FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO |
+ FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_HIERARCHY_AUTO |
+ FE_CAN_MUTE_TS |
+ FE_CAN_2G_MODULATION |
+ FE_CAN_MULTISTREAM
+ },
+
+ .get_tune_settings = mn88473_get_tune_settings,
+
+ .init = mn88473_init,
+ .sleep = mn88473_sleep,
+
+ .set_frontend = mn88473_set_frontend,
+
+ .read_status = mn88473_read_status,
+};
+
+static int mn88473_probe(struct i2c_client *client)
+{
+ struct mn88473_config *config = client->dev.platform_data;
+ struct mn88473_dev *dev;
+ int ret;
+ unsigned int uitmp;
+ static const struct regmap_config regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ };
+
+ dev_dbg(&client->dev, "\n");
+
+ /* Caller really need to provide pointer for frontend we create */
+ if (config->fe == NULL) {
+ dev_err(&client->dev, "frontend pointer not defined\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (dev == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ if (config->i2c_wr_max)
+ dev->i2c_wr_max = config->i2c_wr_max;
+ else
+ dev->i2c_wr_max = ~0;
+
+ if (config->xtal)
+ dev->clk = config->xtal;
+ else
+ dev->clk = 25000000;
+ dev->client[0] = client;
+ dev->regmap[0] = regmap_init_i2c(dev->client[0], &regmap_config);
+ if (IS_ERR(dev->regmap[0])) {
+ ret = PTR_ERR(dev->regmap[0]);
+ goto err_kfree;
+ }
+
+ /*
+ * Chip has three I2C addresses for different register banks. Used
+ * addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
+ * 0x1a and 0x1c, in order to get own I2C client for each register bank.
+ *
+ * Also, register bank 2 do not support sequential I/O. Only single
+ * register write or read is allowed to that bank.
+ */
+ dev->client[1] = i2c_new_dummy_device(client->adapter, 0x1a);
+ if (IS_ERR(dev->client[1])) {
+ ret = PTR_ERR(dev->client[1]);
+ dev_err(&client->dev, "I2C registration failed\n");
+ goto err_regmap_0_regmap_exit;
+ }
+ dev->regmap[1] = regmap_init_i2c(dev->client[1], &regmap_config);
+ if (IS_ERR(dev->regmap[1])) {
+ ret = PTR_ERR(dev->regmap[1]);
+ goto err_client_1_i2c_unregister_device;
+ }
+ i2c_set_clientdata(dev->client[1], dev);
+
+ dev->client[2] = i2c_new_dummy_device(client->adapter, 0x1c);
+ if (IS_ERR(dev->client[2])) {
+ ret = PTR_ERR(dev->client[2]);
+ dev_err(&client->dev, "2nd I2C registration failed\n");
+ goto err_regmap_1_regmap_exit;
+ }
+ dev->regmap[2] = regmap_init_i2c(dev->client[2], &regmap_config);
+ if (IS_ERR(dev->regmap[2])) {
+ ret = PTR_ERR(dev->regmap[2]);
+ goto err_client_2_i2c_unregister_device;
+ }
+ i2c_set_clientdata(dev->client[2], dev);
+
+ /* Check demod answers with correct chip id */
+ ret = regmap_read(dev->regmap[2], 0xff, &uitmp);
+ if (ret)
+ goto err_regmap_2_regmap_exit;
+
+ dev_dbg(&client->dev, "chip id=%02x\n", uitmp);
+
+ if (uitmp != 0x03) {
+ ret = -ENODEV;
+ goto err_regmap_2_regmap_exit;
+ }
+
+ /* Sleep because chip is active by default */
+ ret = regmap_write(dev->regmap[2], 0x05, 0x3e);
+ if (ret)
+ goto err_regmap_2_regmap_exit;
+
+ /* Create dvb frontend */
+ memcpy(&dev->frontend.ops, &mn88473_ops, sizeof(dev->frontend.ops));
+ dev->frontend.demodulator_priv = client;
+ *config->fe = &dev->frontend;
+ i2c_set_clientdata(client, dev);
+
+ dev_info(&client->dev, "Panasonic MN88473 successfully identified\n");
+
+ return 0;
+err_regmap_2_regmap_exit:
+ regmap_exit(dev->regmap[2]);
+err_client_2_i2c_unregister_device:
+ i2c_unregister_device(dev->client[2]);
+err_regmap_1_regmap_exit:
+ regmap_exit(dev->regmap[1]);
+err_client_1_i2c_unregister_device:
+ i2c_unregister_device(dev->client[1]);
+err_regmap_0_regmap_exit:
+ regmap_exit(dev->regmap[0]);
+err_kfree:
+ kfree(dev);
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static void mn88473_remove(struct i2c_client *client)
+{
+ struct mn88473_dev *dev = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "\n");
+
+ regmap_exit(dev->regmap[2]);
+ i2c_unregister_device(dev->client[2]);
+
+ regmap_exit(dev->regmap[1]);
+ i2c_unregister_device(dev->client[1]);
+
+ regmap_exit(dev->regmap[0]);
+
+ kfree(dev);
+}
+
+static const struct i2c_device_id mn88473_id_table[] = {
+ {"mn88473", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, mn88473_id_table);
+
+static struct i2c_driver mn88473_driver = {
+ .driver = {
+ .name = "mn88473",
+ .suppress_bind_attrs = true,
+ },
+ .probe = mn88473_probe,
+ .remove = mn88473_remove,
+ .id_table = mn88473_id_table,
+};
+
+module_i2c_driver(mn88473_driver);
+
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
+MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(MN88473_FIRMWARE);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 08:46:23 +0000