diff options
Diffstat (limited to 'drivers/media/dvb-frontends/si2168.c')
| -rw-r--r-- | drivers/media/dvb-frontends/si2168.c | 815 |
1 files changed, 815 insertions, 0 deletions
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c new file mode 100644 index 000000000..8157df457 --- /dev/null +++ b/drivers/media/dvb-frontends/si2168.c @@ -0,0 +1,815 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Silicon Labs Si2168 DVB-T/T2/C demodulator driver + * + * Copyright (C) 2014 Antti Palosaari <crope@iki.fi> + */ + +#include <linux/delay.h> + +#include "si2168_priv.h" + +static const struct dvb_frontend_ops si2168_ops; + +static void cmd_init(struct si2168_cmd *cmd, const u8 *buf, int wlen, int rlen) +{ + memcpy(cmd->args, buf, wlen); + cmd->wlen = wlen; + cmd->rlen = rlen; +} + +/* execute firmware command */ +static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd) +{ + struct si2168_dev *dev = i2c_get_clientdata(client); + int ret; + unsigned long timeout; + + mutex_lock(&dev->i2c_mutex); + + if (cmd->wlen) { + /* write cmd and args for firmware */ + ret = i2c_master_send(client, cmd->args, cmd->wlen); + if (ret < 0) { + goto err_mutex_unlock; + } else if (ret != cmd->wlen) { + ret = -EREMOTEIO; + goto err_mutex_unlock; + } + } + + if (cmd->rlen) { + /* wait cmd execution terminate */ + #define TIMEOUT 70 + timeout = jiffies + msecs_to_jiffies(TIMEOUT); + while (!time_after(jiffies, timeout)) { + ret = i2c_master_recv(client, cmd->args, cmd->rlen); + if (ret < 0) { + goto err_mutex_unlock; + } else if (ret != cmd->rlen) { + ret = -EREMOTEIO; + goto err_mutex_unlock; + } + + /* firmware ready? */ + if ((cmd->args[0] >> 7) & 0x01) + break; + } + + dev_dbg(&client->dev, "cmd execution took %d ms\n", + jiffies_to_msecs(jiffies) - + (jiffies_to_msecs(timeout) - TIMEOUT)); + + /* error bit set? */ + if ((cmd->args[0] >> 6) & 0x01) { + ret = -EREMOTEIO; + goto err_mutex_unlock; + } + + if (!((cmd->args[0] >> 7) & 0x01)) { + ret = -ETIMEDOUT; + goto err_mutex_unlock; + } + } + + mutex_unlock(&dev->i2c_mutex); + return 0; +err_mutex_unlock: + mutex_unlock(&dev->i2c_mutex); + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire) +{ + struct i2c_client *client = fe->demodulator_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + struct si2168_cmd cmd; + int ret = 0; + + dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire); + + /* set manual value */ + if (dev->ts_mode & SI2168_TS_CLK_MANUAL) { + cmd_init(&cmd, "\x14\x00\x0d\x10\xe8\x03", 6, 4); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + return ret; + } + /* set TS_MODE property */ + cmd_init(&cmd, "\x14\x00\x01\x10\x10\x00", 6, 4); + if (dev->ts_mode & SI2168_TS_CLK_MANUAL) + cmd.args[4] = SI2168_TS_CLK_MANUAL; + if (acquire) + cmd.args[4] |= dev->ts_mode; + else + cmd.args[4] |= SI2168_TS_TRISTATE; + if (dev->ts_clock_gapped) + cmd.args[4] |= 0x40; + ret = si2168_cmd_execute(client, &cmd); + + return ret; +} + +static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status) +{ + struct i2c_client *client = fe->demodulator_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, i; + unsigned int utmp, utmp1, utmp2; + struct si2168_cmd cmd; + + *status = 0; + + if (!dev->active) { + ret = -EAGAIN; + goto err; + } + + switch (c->delivery_system) { + case SYS_DVBT: + cmd_init(&cmd, "\xa0\x01", 2, 13); + break; + case SYS_DVBC_ANNEX_A: + cmd_init(&cmd, "\x90\x01", 2, 9); + break; + case SYS_DVBT2: + cmd_init(&cmd, "\x50\x01", 2, 14); + break; + default: + ret = -EINVAL; + goto err; + } + + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + switch ((cmd.args[2] >> 1) & 0x03) { + case 0x01: + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; + break; + case 0x03: + *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | + FE_HAS_SYNC | FE_HAS_LOCK; + break; + } + + dev->fe_status = *status; + + if (*status & FE_HAS_LOCK) { + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_DECIBEL; + c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4; + } else { + c->cnr.len = 1; + c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + dev_dbg(&client->dev, "status=%02x args=%*ph\n", + *status, cmd.rlen, cmd.args); + + /* BER */ + if (*status & FE_HAS_VITERBI) { + cmd_init(&cmd, "\x82\x00", 2, 3); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* + * Firmware returns [0, 255] mantissa and [0, 8] exponent. + * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8 + */ + utmp = clamp(8 - cmd.args[1], 0, 8); + for (i = 0, utmp1 = 1; i < utmp; i++) + utmp1 = utmp1 * 10; + + utmp1 = cmd.args[2] * utmp1; + utmp2 = 100000000; /* 10^8 */ + + dev_dbg(&client->dev, + "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n", + utmp1, utmp2, cmd.args[2], cmd.args[1]); + + 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; + } + + /* UCB */ + if (*status & FE_HAS_SYNC) { + cmd_init(&cmd, "\x84\x01", 2, 3); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0; + dev_dbg(&client->dev, "block_error=%u\n", utmp1); + + /* Sometimes firmware returns bogus value */ + if (utmp1 == 0xffff) + utmp1 = 0; + + c->block_error.stat[0].scale = FE_SCALE_COUNTER; + c->block_error.stat[0].uvalue += utmp1; + } else { + c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE; + } + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int si2168_set_frontend(struct dvb_frontend *fe) +{ + struct i2c_client *client = fe->demodulator_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret; + struct si2168_cmd cmd; + u8 bandwidth, delivery_system; + + dev_dbg(&client->dev, + "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\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 = 0x20; + break; + case SYS_DVBC_ANNEX_A: + delivery_system = 0x30; + break; + case SYS_DVBT2: + delivery_system = 0x70; + break; + default: + ret = -EINVAL; + goto err; + } + + if (c->bandwidth_hz == 0) { + ret = -EINVAL; + goto err; + } else if (c->bandwidth_hz <= 2000000) + bandwidth = 0x02; + else if (c->bandwidth_hz <= 5000000) + bandwidth = 0x05; + else if (c->bandwidth_hz <= 6000000) + bandwidth = 0x06; + else if (c->bandwidth_hz <= 7000000) + bandwidth = 0x07; + else if (c->bandwidth_hz <= 8000000) + bandwidth = 0x08; + else if (c->bandwidth_hz <= 9000000) + bandwidth = 0x09; + else if (c->bandwidth_hz <= 10000000) + bandwidth = 0x0a; + else + bandwidth = 0x0f; + + /* program tuner */ + if (fe->ops.tuner_ops.set_params) { + ret = fe->ops.tuner_ops.set_params(fe); + if (ret) + goto err; + } + + cmd_init(&cmd, "\x88\x02\x02\x02\x02", 5, 5); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* that has no big effect */ + if (c->delivery_system == SYS_DVBT) + cmd_init(&cmd, "\x89\x21\x06\x11\xff\x98", 6, 3); + else if (c->delivery_system == SYS_DVBC_ANNEX_A) + cmd_init(&cmd, "\x89\x21\x06\x11\x89\xf0", 6, 3); + else if (c->delivery_system == SYS_DVBT2) + cmd_init(&cmd, "\x89\x21\x06\x11\x89\x20", 6, 3); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + if (c->delivery_system == SYS_DVBT2) { + /* select PLP */ + cmd.args[0] = 0x52; + cmd.args[1] = c->stream_id & 0xff; + cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1; + cmd.wlen = 3; + cmd.rlen = 1; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + } + + cmd_init(&cmd, "\x51\x03", 2, 12); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x12\x08\x04", 3, 3); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x0c\x10\x12\x00", 6, 4); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x06\x10\x24\x00", 6, 4); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x07\x10\x00\x24", 6, 4); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x0a\x10\x00\x00", 6, 4); + cmd.args[4] = delivery_system | bandwidth; + if (dev->spectral_inversion) + cmd.args[5] |= 1; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* set DVB-C symbol rate */ + if (c->delivery_system == SYS_DVBC_ANNEX_A) { + cmd_init(&cmd, "\x14\x00\x02\x11\x00\x00", 6, 4); + cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff; + cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + } + + cmd_init(&cmd, "\x14\x00\x0f\x10\x10\x00", 6, 4); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x09\x10\xe3\x08", 6, 4); + cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x08\x10\xd7\x05", 6, 4); + cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x01\x12\x00\x00", 6, 4); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x14\x00\x01\x03\x0c\x00", 6, 4); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + cmd_init(&cmd, "\x85", 1, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + dev->delivery_system = c->delivery_system; + + /* enable ts bus */ + ret = si2168_ts_bus_ctrl(fe, 1); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int si2168_init(struct dvb_frontend *fe) +{ + struct i2c_client *client = fe->demodulator_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + struct dtv_frontend_properties *c = &fe->dtv_property_cache; + int ret, len, remaining; + const struct firmware *fw; + struct si2168_cmd cmd; + + dev_dbg(&client->dev, "\n"); + + /* initialize */ + cmd_init(&cmd, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", + 13, 0); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + if (dev->warm) { + /* resume */ + cmd_init(&cmd, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + udelay(100); + cmd_init(&cmd, "\x85", 1, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + goto warm; + } + + /* power up */ + cmd_init(&cmd, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* request the firmware, this will block and timeout */ + ret = request_firmware(&fw, dev->firmware_name, &client->dev); + if (ret) { + dev_err(&client->dev, + "firmware file '%s' not found\n", + dev->firmware_name); + goto err_release_firmware; + } + + dev_info(&client->dev, "downloading firmware from file '%s'\n", + dev->firmware_name); + + if ((fw->size % 17 == 0) && (fw->data[0] > 5)) { + /* firmware is in the new format */ + for (remaining = fw->size; remaining > 0; remaining -= 17) { + len = fw->data[fw->size - remaining]; + if (len > SI2168_ARGLEN) { + ret = -EINVAL; + break; + } + cmd_init(&cmd, &fw->data[(fw->size - remaining) + 1], + len, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + break; + } + } else if (fw->size % 8 == 0) { + /* firmware is in the old format */ + for (remaining = fw->size; remaining > 0; remaining -= 8) { + cmd_init(&cmd, &fw->data[fw->size - remaining], 8, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + break; + } + } else { + /* bad or unknown firmware format */ + ret = -EINVAL; + } + + if (ret) { + dev_err(&client->dev, "firmware download failed %d\n", ret); + goto err_release_firmware; + } + + release_firmware(fw); + + cmd_init(&cmd, "\x01\x01", 2, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* query firmware version */ + cmd_init(&cmd, "\x11", 1, 10); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 | + (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0; + dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", + dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, + dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); + + /* set ts mode */ + ret = si2168_ts_bus_ctrl(fe, 1); + if (ret) + goto err; + + dev->warm = true; + dev->initialized = true; +warm: + /* Init stats here to indicate which stats are supported */ + 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; + + dev->active = true; + + return 0; +err_release_firmware: + release_firmware(fw); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int si2168_resume(struct dvb_frontend *fe) +{ + struct i2c_client *client = fe->demodulator_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + + /* + * check whether si2168_init() has been called successfully + * outside of a resume cycle. Only call it (and load firmware) + * in this case. si2168_init() is only called during resume + * once the device has actually been used. Otherwise, leave the + * device untouched. + */ + if (dev->initialized) { + dev_dbg(&client->dev, "previously initialized, call si2168_init()\n"); + return si2168_init(fe); + } + dev_dbg(&client->dev, "not initialized yet, skipping init on resume\n"); + return 0; +} + +static int si2168_sleep(struct dvb_frontend *fe) +{ + struct i2c_client *client = fe->demodulator_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + int ret; + struct si2168_cmd cmd; + + dev_dbg(&client->dev, "\n"); + + dev->active = false; + + /* tri-state data bus */ + ret = si2168_ts_bus_ctrl(fe, 0); + if (ret) + goto err; + + /* Firmware later than B 4.0-11 loses warm state during sleep */ + if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0)) + dev->warm = false; + + cmd_init(&cmd, "\x13", 1, 0); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int si2168_get_tune_settings(struct dvb_frontend *fe, + struct dvb_frontend_tune_settings *s) +{ + s->min_delay_ms = 900; + + return 0; +} + +static int si2168_select(struct i2c_mux_core *muxc, u32 chan) +{ + struct i2c_client *client = i2c_mux_priv(muxc); + int ret; + struct si2168_cmd cmd; + + /* open I2C gate */ + cmd_init(&cmd, "\xc0\x0d\x01", 3, 0); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan) +{ + struct i2c_client *client = i2c_mux_priv(muxc); + int ret; + struct si2168_cmd cmd; + + /* close I2C gate */ + cmd_init(&cmd, "\xc0\x0d\x00", 3, 0); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + return 0; +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static const struct dvb_frontend_ops si2168_ops = { + .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, + .info = { + .name = "Silicon Labs Si2168", + .frequency_min_hz = 48 * MHz, + .frequency_max_hz = 870 * MHz, + .frequency_stepsize_hz = 62500, + .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 = si2168_get_tune_settings, + + .init = si2168_init, + .sleep = si2168_sleep, + .resume = si2168_resume, + + .set_frontend = si2168_set_frontend, + + .read_status = si2168_read_status, +}; + +static int si2168_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct si2168_config *config = client->dev.platform_data; + struct si2168_dev *dev; + int ret; + struct si2168_cmd cmd; + + dev_dbg(&client->dev, "\n"); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + goto err; + } + + i2c_set_clientdata(client, dev); + mutex_init(&dev->i2c_mutex); + + /* Initialize */ + cmd_init(&cmd, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", + 13, 0); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err_kfree; + + /* Power up */ + cmd_init(&cmd, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8, 1); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err_kfree; + + /* Query chip revision */ + cmd_init(&cmd, "\x02", 1, 13); + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err_kfree; + + dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | + cmd.args[3] << 8 | cmd.args[4] << 0; + + switch (dev->chip_id) { + case SI2168_CHIP_ID_A20: + dev->firmware_name = SI2168_A20_FIRMWARE; + break; + case SI2168_CHIP_ID_A30: + dev->firmware_name = SI2168_A30_FIRMWARE; + break; + case SI2168_CHIP_ID_B40: + dev->firmware_name = SI2168_B40_FIRMWARE; + break; + case SI2168_CHIP_ID_D60: + dev->firmware_name = SI2168_D60_FIRMWARE; + break; + default: + dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n", + cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]); + ret = -ENODEV; + goto err_kfree; + } + + dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 | + (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0; + + /* create mux i2c adapter for tuner */ + dev->muxc = i2c_mux_alloc(client->adapter, &client->dev, + 1, 0, I2C_MUX_LOCKED, + si2168_select, si2168_deselect); + if (!dev->muxc) { + ret = -ENOMEM; + goto err_kfree; + } + dev->muxc->priv = client; + ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0); + if (ret) + goto err_kfree; + + /* create dvb_frontend */ + memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); + dev->fe.demodulator_priv = client; + *config->i2c_adapter = dev->muxc->adapter[0]; + *config->fe = &dev->fe; + dev->ts_mode = config->ts_mode; + dev->ts_clock_inv = config->ts_clock_inv; + dev->ts_clock_gapped = config->ts_clock_gapped; + dev->spectral_inversion = config->spectral_inversion; + + dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n", + dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, + dev->version >> 8 & 0xff); + dev_info(&client->dev, "firmware version: %c %d.%d.%d\n", + dev->version >> 24 & 0xff, dev->version >> 16 & 0xff, + dev->version >> 8 & 0xff, dev->version >> 0 & 0xff); + + return 0; +err_kfree: + kfree(dev); +err: + dev_warn(&client->dev, "probe failed = %d\n", ret); + return ret; +} + +static void si2168_remove(struct i2c_client *client) +{ + struct si2168_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + i2c_mux_del_adapters(dev->muxc); + + dev->fe.ops.release = NULL; + dev->fe.demodulator_priv = NULL; + + kfree(dev); +} + +static const struct i2c_device_id si2168_id_table[] = { + {"si2168", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, si2168_id_table); + +static struct i2c_driver si2168_driver = { + .driver = { + .name = "si2168", + .suppress_bind_attrs = true, + }, + .probe = si2168_probe, + .remove = si2168_remove, + .id_table = si2168_id_table, +}; + +module_i2c_driver(si2168_driver); + +MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); +MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE(SI2168_A20_FIRMWARE); +MODULE_FIRMWARE(SI2168_A30_FIRMWARE); +MODULE_FIRMWARE(SI2168_B40_FIRMWARE); +MODULE_FIRMWARE(SI2168_D60_FIRMWARE); |