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- /*
- * Panasonic MN88472 DVB-T/T2/C demodulator driver
- *
- * Copyright (C) 2013 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.
- */
- #include "mn88472_priv.h"
- static int mn88472_get_tune_settings(struct dvb_frontend *fe,
- struct dvb_frontend_tune_settings *s)
- {
- s->min_delay_ms = 800;
- return 0;
- }
- static int mn88472_set_frontend(struct dvb_frontend *fe)
- {
- struct i2c_client *client = fe->demodulator_priv;
- struct mn88472_dev *dev = i2c_get_clientdata(client);
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int ret, i;
- u32 if_frequency = 0;
- u64 tmp;
- u8 delivery_system_val, if_val[3], bw_val[7], bw_val2;
- dev_dbg(&client->dev,
- "delivery_system=%d modulation=%d frequency=%d symbol_rate=%d inversion=%d\n",
- c->delivery_system, c->modulation,
- c->frequency, c->symbol_rate, c->inversion);
- if (!dev->warm) {
- ret = -EAGAIN;
- goto err;
- }
- switch (c->delivery_system) {
- case SYS_DVBT:
- delivery_system_val = 0x02;
- break;
- case SYS_DVBT2:
- delivery_system_val = 0x03;
- break;
- case SYS_DVBC_ANNEX_A:
- delivery_system_val = 0x04;
- break;
- default:
- ret = -EINVAL;
- goto err;
- }
- if (c->bandwidth_hz <= 5000000) {
- memcpy(bw_val, "\xe5\x99\x9a\x1b\xa9\x1b\xa9", 7);
- bw_val2 = 0x03;
- } else if (c->bandwidth_hz <= 6000000) {
- /* IF 3570000 Hz, BW 6000000 Hz */
- memcpy(bw_val, "\xbf\x55\x55\x15\x6b\x15\x6b", 7);
- bw_val2 = 0x02;
- } else if (c->bandwidth_hz <= 7000000) {
- /* IF 4570000 Hz, BW 7000000 Hz */
- memcpy(bw_val, "\xa4\x00\x00\x0f\x2c\x0f\x2c", 7);
- bw_val2 = 0x01;
- } else if (c->bandwidth_hz <= 8000000) {
- /* IF 4570000 Hz, BW 8000000 Hz */
- memcpy(bw_val, "\x8f\x80\x00\x08\xee\x08\xee", 7);
- bw_val2 = 0x00;
- } else {
- ret = -EINVAL;
- goto err;
- }
- /* 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=%d\n", if_frequency);
- }
- /* Calculate IF registers ( (1<<24)*IF / Xtal ) */
- tmp = div_u64(if_frequency * (u64)(1<<24) + (dev->xtal / 2),
- dev->xtal);
- if_val[0] = ((tmp >> 16) & 0xff);
- if_val[1] = ((tmp >> 8) & 0xff);
- if_val[2] = ((tmp >> 0) & 0xff);
- ret = regmap_write(dev->regmap[2], 0xfb, 0x13);
- ret = regmap_write(dev->regmap[2], 0xef, 0x13);
- ret = regmap_write(dev->regmap[2], 0xf9, 0x13);
- if (ret)
- goto err;
- ret = regmap_write(dev->regmap[2], 0x00, 0x66);
- if (ret)
- goto err;
- ret = regmap_write(dev->regmap[2], 0x01, 0x00);
- if (ret)
- goto err;
- ret = regmap_write(dev->regmap[2], 0x02, 0x01);
- if (ret)
- goto err;
- ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val);
- if (ret)
- goto err;
- ret = regmap_write(dev->regmap[2], 0x04, bw_val2);
- 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;
- }
- for (i = 0; i < sizeof(bw_val); i++) {
- ret = regmap_write(dev->regmap[2], 0x13 + i, bw_val[i]);
- if (ret)
- goto err;
- }
- switch (c->delivery_system) {
- case SYS_DVBT:
- ret = regmap_write(dev->regmap[0], 0x07, 0x26);
- ret = regmap_write(dev->regmap[0], 0xb0, 0x0a);
- ret = regmap_write(dev->regmap[0], 0xb4, 0x00);
- ret = regmap_write(dev->regmap[0], 0xcd, 0x1f);
- ret = regmap_write(dev->regmap[0], 0xd4, 0x0a);
- ret = regmap_write(dev->regmap[0], 0xd6, 0x48);
- ret = regmap_write(dev->regmap[0], 0x00, 0xba);
- ret = regmap_write(dev->regmap[0], 0x01, 0x13);
- if (ret)
- goto err;
- break;
- case SYS_DVBT2:
- ret = regmap_write(dev->regmap[2], 0x2b, 0x13);
- ret = regmap_write(dev->regmap[2], 0x4f, 0x05);
- ret = regmap_write(dev->regmap[1], 0xf6, 0x05);
- ret = regmap_write(dev->regmap[0], 0xb0, 0x0a);
- ret = regmap_write(dev->regmap[0], 0xb4, 0xf6);
- ret = regmap_write(dev->regmap[0], 0xcd, 0x01);
- ret = regmap_write(dev->regmap[0], 0xd4, 0x09);
- ret = regmap_write(dev->regmap[0], 0xd6, 0x46);
- ret = regmap_write(dev->regmap[2], 0x30, 0x80);
- ret = regmap_write(dev->regmap[2], 0x32, 0x00);
- if (ret)
- goto err;
- break;
- case SYS_DVBC_ANNEX_A:
- ret = regmap_write(dev->regmap[0], 0xb0, 0x0b);
- ret = regmap_write(dev->regmap[0], 0xb4, 0x00);
- ret = regmap_write(dev->regmap[0], 0xcd, 0x17);
- ret = regmap_write(dev->regmap[0], 0xd4, 0x09);
- ret = regmap_write(dev->regmap[0], 0xd6, 0x48);
- ret = regmap_write(dev->regmap[1], 0x00, 0xb0);
- if (ret)
- goto err;
- break;
- default:
- ret = -EINVAL;
- goto err;
- }
- ret = regmap_write(dev->regmap[0], 0x46, 0x00);
- ret = regmap_write(dev->regmap[0], 0xae, 0x00);
- switch (dev->ts_mode) {
- case SERIAL_TS_MODE:
- ret = regmap_write(dev->regmap[2], 0x08, 0x1d);
- break;
- case PARALLEL_TS_MODE:
- ret = regmap_write(dev->regmap[2], 0x08, 0x00);
- break;
- default:
- dev_dbg(&client->dev, "ts_mode error: %d\n", dev->ts_mode);
- ret = -EINVAL;
- goto err;
- }
- switch (dev->ts_clock) {
- case VARIABLE_TS_CLOCK:
- ret = regmap_write(dev->regmap[0], 0xd9, 0xe3);
- break;
- case FIXED_TS_CLOCK:
- ret = regmap_write(dev->regmap[0], 0xd9, 0xe1);
- break;
- default:
- dev_dbg(&client->dev, "ts_clock error: %d\n", dev->ts_clock);
- ret = -EINVAL;
- goto err;
- }
- /* Reset demod */
- ret = regmap_write(dev->regmap[2], 0xf8, 0x9f);
- if (ret)
- goto err;
- dev->delivery_system = c->delivery_system;
- return 0;
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int mn88472_read_status(struct dvb_frontend *fe, enum fe_status *status)
- {
- struct i2c_client *client = fe->demodulator_priv;
- struct mn88472_dev *dev = i2c_get_clientdata(client);
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int ret;
- unsigned int utmp;
- int lock = 0;
- *status = 0;
- if (!dev->warm) {
- ret = -EAGAIN;
- goto err;
- }
- switch (c->delivery_system) {
- case SYS_DVBT:
- ret = regmap_read(dev->regmap[0], 0x7F, &utmp);
- if (ret)
- goto err;
- if ((utmp & 0xF) >= 0x09)
- lock = 1;
- break;
- case SYS_DVBT2:
- ret = regmap_read(dev->regmap[2], 0x92, &utmp);
- if (ret)
- goto err;
- if ((utmp & 0xF) >= 0x07)
- *status |= FE_HAS_SIGNAL;
- if ((utmp & 0xF) >= 0x0a)
- *status |= FE_HAS_CARRIER;
- if ((utmp & 0xF) >= 0x0d)
- *status |= FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
- break;
- case SYS_DVBC_ANNEX_A:
- ret = regmap_read(dev->regmap[1], 0x84, &utmp);
- if (ret)
- goto err;
- if ((utmp & 0xF) >= 0x08)
- lock = 1;
- break;
- default:
- ret = -EINVAL;
- goto err;
- }
- if (lock)
- *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
- FE_HAS_SYNC | FE_HAS_LOCK;
- return 0;
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int mn88472_init(struct dvb_frontend *fe)
- {
- struct i2c_client *client = fe->demodulator_priv;
- struct mn88472_dev *dev = i2c_get_clientdata(client);
- int ret, len, remaining;
- const struct firmware *fw = NULL;
- u8 *fw_file = MN88472_FIRMWARE;
- unsigned int tmp;
- dev_dbg(&client->dev, "\n");
- /* set cold state by default */
- dev->warm = false;
- /* power on */
- ret = regmap_write(dev->regmap[2], 0x05, 0x00);
- if (ret)
- goto err;
- ret = regmap_bulk_write(dev->regmap[2], 0x0b, "\x00\x00", 2);
- if (ret)
- goto err;
- /* check if firmware is already running */
- ret = regmap_read(dev->regmap[0], 0xf5, &tmp);
- if (ret)
- goto err;
- if (!(tmp & 0x1)) {
- dev_info(&client->dev, "firmware already running\n");
- dev->warm = true;
- return 0;
- }
- /* request the firmware, this will block and timeout */
- ret = request_firmware(&fw, fw_file, &client->dev);
- if (ret) {
- dev_err(&client->dev, "firmare file '%s' not found\n",
- fw_file);
- goto err;
- }
- dev_info(&client->dev, "downloading firmware from file '%s'\n",
- fw_file);
- ret = regmap_write(dev->regmap[0], 0xf5, 0x03);
- if (ret)
- goto firmware_release;
- for (remaining = fw->size; remaining > 0;
- remaining -= (dev->i2c_wr_max - 1)) {
- len = remaining;
- if (len > (dev->i2c_wr_max - 1))
- len = dev->i2c_wr_max - 1;
- ret = regmap_bulk_write(dev->regmap[0], 0xf6,
- &fw->data[fw->size - remaining], len);
- if (ret) {
- dev_err(&client->dev,
- "firmware download failed=%d\n", ret);
- goto firmware_release;
- }
- }
- /* parity check of firmware */
- ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
- if (ret) {
- dev_err(&client->dev,
- "parity reg read failed=%d\n", ret);
- goto firmware_release;
- }
- if (tmp & 0x10) {
- dev_err(&client->dev,
- "firmware parity check failed=0x%x\n", tmp);
- goto firmware_release;
- }
- dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
- ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
- if (ret)
- goto firmware_release;
- release_firmware(fw);
- fw = NULL;
- /* warm state */
- dev->warm = true;
- return 0;
- firmware_release:
- release_firmware(fw);
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int mn88472_sleep(struct dvb_frontend *fe)
- {
- struct i2c_client *client = fe->demodulator_priv;
- struct mn88472_dev *dev = i2c_get_clientdata(client);
- int ret;
- dev_dbg(&client->dev, "\n");
- /* power off */
- ret = regmap_write(dev->regmap[2], 0x0b, 0x30);
- if (ret)
- goto err;
- ret = regmap_write(dev->regmap[2], 0x05, 0x3e);
- if (ret)
- goto err;
- dev->delivery_system = SYS_UNDEFINED;
- return 0;
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static struct dvb_frontend_ops mn88472_ops = {
- .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
- .info = {
- .name = "Panasonic MN88472",
- .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 = mn88472_get_tune_settings,
- .init = mn88472_init,
- .sleep = mn88472_sleep,
- .set_frontend = mn88472_set_frontend,
- .read_status = mn88472_read_status,
- };
- static int mn88472_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
- {
- struct mn88472_config *config = client->dev.platform_data;
- struct mn88472_dev *dev;
- int ret;
- unsigned int utmp;
- 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;
- }
- dev->i2c_wr_max = config->i2c_wr_max;
- dev->xtal = config->xtal;
- dev->ts_mode = config->ts_mode;
- dev->ts_clock = config->ts_clock;
- dev->client[0] = client;
- dev->regmap[0] = regmap_init_i2c(dev->client[0], ®map_config);
- if (IS_ERR(dev->regmap[0])) {
- ret = PTR_ERR(dev->regmap[0]);
- goto err_kfree;
- }
- /* check demod answers to I2C */
- ret = regmap_read(dev->regmap[0], 0x00, &utmp);
- if (ret)
- goto err_regmap_0_regmap_exit;
- /*
- * Chip has three I2C addresses for different register pages. 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 page.
- */
- dev->client[1] = i2c_new_dummy(client->adapter, 0x1a);
- if (dev->client[1] == NULL) {
- ret = -ENODEV;
- dev_err(&client->dev, "I2C registration failed\n");
- if (ret)
- goto err_regmap_0_regmap_exit;
- }
- dev->regmap[1] = regmap_init_i2c(dev->client[1], ®map_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(client->adapter, 0x1c);
- if (dev->client[2] == NULL) {
- ret = -ENODEV;
- dev_err(&client->dev, "2nd I2C registration failed\n");
- if (ret)
- goto err_regmap_1_regmap_exit;
- }
- dev->regmap[2] = regmap_init_i2c(dev->client[2], ®map_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);
- /* create dvb_frontend */
- memcpy(&dev->fe.ops, &mn88472_ops, sizeof(struct dvb_frontend_ops));
- dev->fe.demodulator_priv = client;
- *config->fe = &dev->fe;
- i2c_set_clientdata(client, dev);
- dev_info(&client->dev, "Panasonic MN88472 successfully attached\n");
- return 0;
- 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 int mn88472_remove(struct i2c_client *client)
- {
- struct mn88472_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);
- return 0;
- }
- static const struct i2c_device_id mn88472_id_table[] = {
- {"mn88472", 0},
- {}
- };
- MODULE_DEVICE_TABLE(i2c, mn88472_id_table);
- static struct i2c_driver mn88472_driver = {
- .driver = {
- .name = "mn88472",
- },
- .probe = mn88472_probe,
- .remove = mn88472_remove,
- .id_table = mn88472_id_table,
- };
- module_i2c_driver(mn88472_driver);
- MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
- MODULE_DESCRIPTION("Panasonic MN88472 DVB-T/T2/C demodulator driver");
- MODULE_LICENSE("GPL");
- MODULE_FIRMWARE(MN88472_FIRMWARE);
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