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path: root/drivers/media/dvb-frontends/mn88472.c
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Diffstat (limited to 'drivers/media/dvb-frontends/mn88472.c')
-rw-r--r--drivers/media/dvb-frontends/mn88472.c613
1 files changed, 613 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/mn88472.c b/drivers/media/dvb-frontends/mn88472.c
new file mode 100644
index 000000000000..18fb2df1e2bd
--- /dev/null
+++ b/drivers/media/dvb-frontends/mn88472.c
@@ -0,0 +1,613 @@
+/*
+ * 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 = 1000;
+ return 0;
+}
+
+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;
+
+ if (!dev->active) {
+ 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 & 0x0f) >= 0x09)
+ *status = FE_HAS_SIGNAL | FE_HAS_CARRIER |
+ FE_HAS_VITERBI | FE_HAS_SYNC | FE_HAS_LOCK;
+ else
+ *status = 0;
+ break;
+ case SYS_DVBT2:
+ ret = regmap_read(dev->regmap[2], 0x92, &utmp);
+ if (ret)
+ goto err;
+ 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], 0x84, &utmp);
+ if (ret)
+ goto err;
+ if ((utmp & 0x0f) >= 0x08)
+ *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;
+ }
+
+ return 0;
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+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;
+ unsigned int utmp;
+ u32 if_frequency;
+ u8 buf[3], delivery_system_val, bandwidth_val, *bandwidth_vals_ptr;
+ u8 reg_bank0_b4_val, reg_bank0_cd_val, reg_bank0_d4_val;
+ u8 reg_bank0_d6_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_bank0_b4_val = 0x00;
+ reg_bank0_cd_val = 0x1f;
+ reg_bank0_d4_val = 0x0a;
+ reg_bank0_d6_val = 0x48;
+ break;
+ case SYS_DVBT2:
+ delivery_system_val = 0x03;
+ reg_bank0_b4_val = 0xf6;
+ reg_bank0_cd_val = 0x01;
+ reg_bank0_d4_val = 0x09;
+ reg_bank0_d6_val = 0x46;
+ break;
+ case SYS_DVBC_ANNEX_A:
+ delivery_system_val = 0x04;
+ reg_bank0_b4_val = 0x00;
+ reg_bank0_cd_val = 0x17;
+ reg_bank0_d4_val = 0x09;
+ reg_bank0_d6_val = 0x48;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ switch (c->delivery_system) {
+ case SYS_DVBT:
+ case SYS_DVBT2:
+ switch (c->bandwidth_hz) {
+ case 5000000:
+ bandwidth_vals_ptr = "\xe5\x99\x9a\x1b\xa9\x1b\xa9";
+ bandwidth_val = 0x03;
+ break;
+ case 6000000:
+ bandwidth_vals_ptr = "\xbf\x55\x55\x15\x6b\x15\x6b";
+ bandwidth_val = 0x02;
+ break;
+ case 7000000:
+ bandwidth_vals_ptr = "\xa4\x00\x00\x0f\x2c\x0f\x2c";
+ bandwidth_val = 0x01;
+ break;
+ case 8000000:
+ bandwidth_vals_ptr = "\x8f\x80\x00\x08\xee\x08\xee";
+ bandwidth_val = 0x00;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+ break;
+ case SYS_DVBC_ANNEX_A:
+ bandwidth_vals_ptr = NULL;
+ bandwidth_val = 0x00;
+ 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=%d\n", if_frequency);
+ } else {
+ ret = -EINVAL;
+ 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, bandwidth_val);
+ if (ret)
+ goto err;
+
+ /* IF */
+ utmp = DIV_ROUND_CLOSEST_ULL((u64)if_frequency * 0x1000000, dev->clk);
+ buf[0] = (utmp >> 16) & 0xff;
+ buf[1] = (utmp >> 8) & 0xff;
+ buf[2] = (utmp >> 0) & 0xff;
+ for (i = 0; i < 3; i++) {
+ ret = regmap_write(dev->regmap[2], 0x10 + i, buf[i]);
+ if (ret)
+ goto err;
+ }
+
+ /* Bandwidth */
+ if (bandwidth_vals_ptr) {
+ for (i = 0; i < 7; i++) {
+ ret = regmap_write(dev->regmap[2], 0x13 + i,
+ bandwidth_vals_ptr[i]);
+ if (ret)
+ goto err;
+ }
+ }
+
+ ret = regmap_write(dev->regmap[0], 0xb4, reg_bank0_b4_val);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0xcd, reg_bank0_cd_val);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0xd4, reg_bank0_d4_val);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0xd6, reg_bank0_d6_val);
+ if (ret)
+ goto err;
+
+ switch (c->delivery_system) {
+ case SYS_DVBT:
+ ret = regmap_write(dev->regmap[0], 0x07, 0x26);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x00, 0xba);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[0], 0x01, 0x13);
+ if (ret)
+ goto err;
+ break;
+ case SYS_DVBT2:
+ ret = regmap_write(dev->regmap[2], 0x2b, 0x13);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x4f, 0x05);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[1], 0xf6, 0x05);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x32, c->stream_id);
+ if (ret)
+ goto err;
+ break;
+ case SYS_DVBC_ANNEX_A:
+ break;
+ default:
+ break;
+ }
+
+ /* 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 mn88472_init(struct dvb_frontend *fe)
+{
+ struct i2c_client *client = fe->demodulator_priv;
+ struct mn88472_dev *dev = i2c_get_clientdata(client);
+ int ret, len, rem;
+ unsigned int utmp;
+ const struct firmware *firmware;
+ const char *name = MN88472_FIRMWARE;
+
+ dev_dbg(&client->dev, "\n");
+
+ /* Power up */
+ ret = regmap_write(dev->regmap[2], 0x05, 0x00);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x0b, 0x00);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x0c, 0x00);
+ if (ret)
+ goto err;
+
+ /* Check if firmware is already running */
+ ret = regmap_read(dev->regmap[0], 0xf5, &utmp);
+ if (ret)
+ goto err;
+ if (!(utmp & 0x01))
+ goto warm;
+
+ ret = request_firmware(&firmware, 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 (rem = firmware->size; rem > 0; rem -= (dev->i2c_write_max - 1)) {
+ len = min(dev->i2c_write_max - 1, rem);
+ ret = regmap_bulk_write(dev->regmap[0], 0xf6,
+ &firmware->data[firmware->size - rem],
+ len);
+ if (ret) {
+ dev_err(&client->dev, "firmware download failed %d\n",
+ ret);
+ goto err_release_firmware;
+ }
+ }
+
+ /* Parity check of firmware */
+ ret = regmap_read(dev->regmap[0], 0xf8, &utmp);
+ if (ret)
+ goto err_release_firmware;
+ if (utmp & 0x10) {
+ ret = -EINVAL;
+ dev_err(&client->dev, "firmware did not run\n");
+ goto err_release_firmware;
+ }
+
+ ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
+ if (ret)
+ goto err_release_firmware;
+
+ release_firmware(firmware);
+warm:
+ /* TS config */
+ switch (dev->ts_mode) {
+ case SERIAL_TS_MODE:
+ utmp = 0x1d;
+ break;
+ case PARALLEL_TS_MODE:
+ utmp = 0x00;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+ ret = regmap_write(dev->regmap[2], 0x08, utmp);
+ if (ret)
+ goto err;
+
+ switch (dev->ts_clk) {
+ case VARIABLE_TS_CLOCK:
+ utmp = 0xe3;
+ break;
+ case FIXED_TS_CLOCK:
+ utmp = 0xe1;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+ ret = regmap_write(dev->regmap[0], 0xd9, utmp);
+ if (ret)
+ goto err;
+
+ dev->active = true;
+
+ return 0;
+err_release_firmware:
+ release_firmware(firmware);
+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 down */
+ ret = regmap_write(dev->regmap[2], 0x0c, 0x30);
+ if (ret)
+ goto err;
+ ret = regmap_write(dev->regmap[2], 0x0b, 0x30);
+ if (ret)
+ goto err;
+ 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 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 struct dvb_frontend *mn88472_get_dvb_frontend(struct i2c_client *client)
+{
+ struct mn88472_dev *dev = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "\n");
+
+ return &dev->fe;
+}
+
+static int mn88472_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct mn88472_config *pdata = 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");
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ dev->i2c_write_max = pdata->i2c_wr_max ? pdata->i2c_wr_max : ~0;
+ dev->clk = pdata->xtal;
+ dev->ts_mode = pdata->ts_mode;
+ dev->ts_clk = pdata->ts_clock;
+ 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;
+ }
+
+ /* Check demod answers with correct chip id */
+ ret = regmap_read(dev->regmap[0], 0xff, &utmp);
+ if (ret)
+ goto err_regmap_0_regmap_exit;
+
+ dev_dbg(&client->dev, "chip id=%02x\n", utmp);
+
+ if (utmp != 0x02) {
+ ret = -ENODEV;
+ goto err_regmap_0_regmap_exit;
+ }
+
+ /*
+ * 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(client->adapter, 0x1a);
+ if (!dev->client[1]) {
+ 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], &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(client->adapter, 0x1c);
+ if (!dev->client[2]) {
+ 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], &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);
+
+ /* 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->fe.ops, &mn88472_ops, sizeof(struct dvb_frontend_ops));
+ dev->fe.demodulator_priv = client;
+ *pdata->fe = &dev->fe;
+ i2c_set_clientdata(client, dev);
+
+ /* Setup callbacks */
+ pdata->get_dvb_frontend = mn88472_get_dvb_frontend;
+
+ dev_info(&client->dev, "Panasonic MN88472 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 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",
+ .suppress_bind_attrs = true,
+ },
+ .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);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-17 12:49:27 +0100