| /* |
| * 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 = 400; |
| 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); |
| ret = regmap_write(dev->regmap[2], 0x08, 0x1d); |
| ret = regmap_write(dev->regmap[0], 0xd9, 0xe3); |
| |
| /* 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, fe_status_t *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; |
| |
| *status = 0; |
| |
| if (!dev->warm) { |
| ret = -EAGAIN; |
| goto err; |
| } |
| |
| switch (c->delivery_system) { |
| case SYS_DVBT: |
| case SYS_DVBT2: |
| /* FIXME: implement me */ |
| utmp = 0x08; /* DVB-C lock value */ |
| break; |
| case SYS_DVBC_ANNEX_A: |
| ret = regmap_read(dev->regmap[1], 0x84, &utmp); |
| if (ret) |
| goto err; |
| break; |
| default: |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| if (utmp == 0x08) |
| *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; |
| |
| 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; |
| |
| /* 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 err; |
| |
| 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 err; |
| } |
| } |
| |
| ret = regmap_write(dev->regmap[0], 0xf5, 0x00); |
| if (ret) |
| goto err; |
| |
| release_firmware(fw); |
| fw = NULL; |
| |
| /* warm state */ |
| dev->warm = true; |
| |
| return 0; |
| err: |
| if (fw) |
| release_firmware(fw); |
| |
| 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", |
| .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->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 = { |
| .owner = THIS_MODULE, |
| .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); |