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path: root/drivers/media/dvb-frontends/mn88473.c
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Diffstat (limited to 'drivers/media/dvb-frontends/mn88473.c')
-rw-r--r--drivers/media/dvb-frontends/mn88473.c522
1 files changed, 522 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/mn88473.c b/drivers/media/dvb-frontends/mn88473.c
new file mode 100644
index 000000000000..a222e99935d2
--- /dev/null
+++ b/drivers/media/dvb-frontends/mn88473.c
@@ -0,0 +1,522 @@
+/*
+ * Panasonic MN88473 DVB-T/T2/C demodulator driver
+ *
+ * Copyright (C) 2014 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 "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;
+ u32 if_frequency;
+ u64 tmp;
+ u8 delivery_system_val, if_val[3], bw_val[7];
+
+ 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->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 <= 6000000) {
+ memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
+ } else if (c->bandwidth_hz <= 7000000) {
+ memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
+ } else if (c->bandwidth_hz <= 8000000) {
+ memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
+ } 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);
+ } else {
+ if_frequency = 0;
+ }
+
+ /* 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], 0x05, 0x00);
+ ret = regmap_write(dev->regmap[2], 0xfb, 0x13);
+ ret = regmap_write(dev->regmap[2], 0xef, 0x13);
+ ret = regmap_write(dev->regmap[2], 0xf9, 0x13);
+ ret = regmap_write(dev->regmap[2], 0x00, 0x18);
+ ret = regmap_write(dev->regmap[2], 0x01, 0x01);
+ ret = regmap_write(dev->regmap[2], 0x02, 0x21);
+ ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val);
+ ret = regmap_write(dev->regmap[2], 0x0b, 0x00);
+
+ 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;
+ }
+
+ ret = regmap_write(dev->regmap[2], 0x2d, 0x3b);
+ ret = regmap_write(dev->regmap[2], 0x2e, 0x00);
+ ret = regmap_write(dev->regmap[2], 0x56, 0x0d);
+ ret = regmap_write(dev->regmap[0], 0x01, 0xba);
+ ret = regmap_write(dev->regmap[0], 0x02, 0x13);
+ ret = regmap_write(dev->regmap[0], 0x03, 0x80);
+ ret = regmap_write(dev->regmap[0], 0x04, 0xba);
+ ret = regmap_write(dev->regmap[0], 0x05, 0x91);
+ ret = regmap_write(dev->regmap[0], 0x07, 0xe7);
+ ret = regmap_write(dev->regmap[0], 0x08, 0x28);
+ ret = regmap_write(dev->regmap[0], 0x0a, 0x1a);
+ ret = regmap_write(dev->regmap[0], 0x13, 0x1f);
+ ret = regmap_write(dev->regmap[0], 0x19, 0x03);
+ ret = regmap_write(dev->regmap[0], 0x1d, 0xb0);
+ ret = regmap_write(dev->regmap[0], 0x2a, 0x72);
+ ret = regmap_write(dev->regmap[0], 0x2d, 0x00);
+ ret = regmap_write(dev->regmap[0], 0x3c, 0x00);
+ ret = regmap_write(dev->regmap[0], 0x3f, 0xf8);
+ ret = regmap_write(dev->regmap[0], 0x40, 0xf4);
+ ret = regmap_write(dev->regmap[0], 0x41, 0x08);
+ ret = regmap_write(dev->regmap[0], 0xd2, 0x29);
+ ret = regmap_write(dev->regmap[0], 0xd4, 0x55);
+ ret = regmap_write(dev->regmap[1], 0x10, 0x10);
+ ret = regmap_write(dev->regmap[1], 0x11, 0xab);
+ ret = regmap_write(dev->regmap[1], 0x12, 0x0d);
+ ret = regmap_write(dev->regmap[1], 0x13, 0xae);
+ ret = regmap_write(dev->regmap[1], 0x14, 0x1d);
+ ret = regmap_write(dev->regmap[1], 0x15, 0x9d);
+ ret = regmap_write(dev->regmap[1], 0xbe, 0x08);
+ ret = regmap_write(dev->regmap[2], 0x09, 0x08);
+ ret = regmap_write(dev->regmap[2], 0x08, 0x1d);
+ ret = regmap_write(dev->regmap[0], 0xb2, 0x37);
+ ret = regmap_write(dev->regmap[0], 0xd7, 0x04);
+ ret = regmap_write(dev->regmap[2], 0x32, 0x80);
+ ret = regmap_write(dev->regmap[2], 0x36, 0x00);
+ 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 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;
+ 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], 0x62, &utmp);
+ if (ret)
+ goto err;
+ if (!(utmp & 0xA0)) {
+ if ((utmp & 0xF) >= 0x03)
+ *status |= FE_HAS_SIGNAL;
+ if ((utmp & 0xF) >= 0x09)
+ lock = 1;
+ }
+ break;
+ case SYS_DVBT2:
+ ret = regmap_read(dev->regmap[2], 0x8B, &utmp);
+ if (ret)
+ goto err;
+ if (!(utmp & 0x40)) {
+ 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], 0x85, &utmp);
+ if (ret)
+ goto err;
+ if (!(utmp & 0x40)) {
+ ret = regmap_read(dev->regmap[1], 0x89, &utmp);
+ if (ret)
+ goto err;
+ if (utmp & 0x01)
+ 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 mn88473_init(struct dvb_frontend *fe)
+{
+ struct i2c_client *client = fe->demodulator_priv;
+ struct mn88473_dev *dev = i2c_get_clientdata(client);
+ int ret, len, remaining;
+ const struct firmware *fw = NULL;
+ u8 *fw_file = MN88473_FIRMWARE;
+ unsigned int tmp;
+
+ dev_dbg(&client->dev, "\n");
+
+ /* set cold state by default */
+ dev->warm = false;
+
+ /* 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_request_firmware;
+ }
+
+ 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;
+ }
+ }
+
+ /* 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 err;
+ }
+ if (tmp & 0x10) {
+ dev_err(&client->dev,
+ "firmware parity check failed=0x%x\n", tmp);
+ goto err;
+ }
+ dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
+
+ 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:
+ release_firmware(fw);
+err_request_firmware:
+ 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");
+
+ 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 mn88473_ops = {
+ .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
+ .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,
+ const struct i2c_device_id *id)
+{
+ struct mn88473_config *config = client->dev.platform_data;
+ struct mn88473_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;
+ if (!config->xtal)
+ dev->xtal = 25000000;
+ else
+ dev->xtal = config->xtal;
+ 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 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], &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] == 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], &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);
+
+ /* create dvb_frontend */
+ memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
+ dev->fe.demodulator_priv = client;
+ *config->fe = &dev->fe;
+ i2c_set_clientdata(client, dev);
+
+ dev_info(&dev->client[0]->dev, "Panasonic MN88473 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 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);
+
+ return 0;
+}
+
+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",
+ },
+ .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 2.39.0) at 2024-12-28 00:11:18 +0300