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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * Silicon Labs Si2146/2147/2148/2157/2158 silicon tuner driver
- *
- * Copyright (C) 2014 Antti Palosaari <[email protected]>
- */
- #include "si2157_priv.h"
- static const struct dvb_tuner_ops si2157_ops;
- static int tuner_lock_debug;
- module_param(tuner_lock_debug, int, 0644);
- MODULE_PARM_DESC(tuner_lock_debug, "if set, signal lock is briefly waited on after setting params");
- /* execute firmware command */
- static int si2157_cmd_execute(struct i2c_client *client, struct si2157_cmd *cmd)
- {
- struct si2157_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 80
- 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, status=%x\n",
- jiffies_to_msecs(jiffies) -
- (jiffies_to_msecs(timeout) - TIMEOUT),
- cmd->args[0]);
- if (!((cmd->args[0] >> 7) & 0x01)) {
- ret = -ETIMEDOUT;
- goto err_mutex_unlock;
- }
- /* check error status bit */
- if (cmd->args[0] & 0x40) {
- ret = -EAGAIN;
- 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 const struct si2157_tuner_info si2157_tuners[] = {
- { SI2141, 0x60, false, SI2141_60_FIRMWARE, SI2141_A10_FIRMWARE },
- { SI2141, 0x61, false, SI2141_61_FIRMWARE, SI2141_A10_FIRMWARE },
- { SI2146, 0x11, false, SI2146_11_FIRMWARE, NULL },
- { SI2147, 0x50, false, SI2147_50_FIRMWARE, NULL },
- { SI2148, 0x32, true, SI2148_32_FIRMWARE, SI2158_A20_FIRMWARE },
- { SI2148, 0x33, true, SI2148_33_FIRMWARE, SI2158_A20_FIRMWARE },
- { SI2157, 0x50, false, SI2157_50_FIRMWARE, SI2157_A30_FIRMWARE },
- { SI2158, 0x50, false, SI2158_50_FIRMWARE, SI2158_A20_FIRMWARE },
- { SI2158, 0x51, false, SI2158_51_FIRMWARE, SI2158_A20_FIRMWARE },
- { SI2177, 0x50, false, SI2177_50_FIRMWARE, SI2157_A30_FIRMWARE },
- };
- static int si2157_load_firmware(struct dvb_frontend *fe,
- const char *fw_name)
- {
- struct i2c_client *client = fe->tuner_priv;
- const struct firmware *fw;
- int ret, len, remaining;
- struct si2157_cmd cmd;
- /* request the firmware, this will block and timeout */
- ret = firmware_request_nowarn(&fw, fw_name, &client->dev);
- if (ret)
- return ret;
- /* firmware should be n chunks of 17 bytes */
- if (fw->size % 17 != 0) {
- dev_err(&client->dev, "firmware file '%s' is invalid\n",
- fw_name);
- ret = -EINVAL;
- goto err_release_firmware;
- }
- dev_info(&client->dev, "downloading firmware from file '%s'\n",
- fw_name);
- for (remaining = fw->size; remaining > 0; remaining -= 17) {
- len = fw->data[fw->size - remaining];
- if (len > SI2157_ARGLEN) {
- dev_err(&client->dev, "Bad firmware length\n");
- ret = -EINVAL;
- goto err_release_firmware;
- }
- memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
- cmd.wlen = len;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret) {
- dev_err(&client->dev, "firmware download failed %d\n",
- ret);
- goto err_release_firmware;
- }
- }
- err_release_firmware:
- release_firmware(fw);
- return ret;
- }
- static int si2157_find_and_load_firmware(struct dvb_frontend *fe)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- const char *fw_alt_name = NULL;
- unsigned char part_id, rom_id;
- const char *fw_name = NULL;
- struct si2157_cmd cmd;
- bool required = true;
- int ret, i;
- if (dev->dont_load_firmware) {
- dev_info(&client->dev,
- "device is buggy, skipping firmware download\n");
- return 0;
- }
- /* query chip revision */
- memcpy(cmd.args, "\x02", 1);
- cmd.wlen = 1;
- cmd.rlen = 13;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- return ret;
- part_id = cmd.args[2];
- rom_id = cmd.args[12];
- for (i = 0; i < ARRAY_SIZE(si2157_tuners); i++) {
- if (si2157_tuners[i].part_id != part_id)
- continue;
- required = si2157_tuners[i].required;
- fw_alt_name = si2157_tuners[i].fw_alt_name;
- /* Both part and rom ID match */
- if (si2157_tuners[i].rom_id == rom_id) {
- fw_name = si2157_tuners[i].fw_name;
- break;
- }
- }
- if (required && !fw_name && !fw_alt_name) {
- dev_err(&client->dev,
- "unknown chip version Si21%d-%c%c%c ROM 0x%02x\n",
- part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id);
- return -EINVAL;
- }
- /* Update the part id based on device's report */
- dev->part_id = part_id;
- dev_info(&client->dev,
- "found a 'Silicon Labs Si21%d-%c%c%c ROM 0x%02x'\n",
- part_id, cmd.args[1], cmd.args[3], cmd.args[4], rom_id);
- if (fw_name)
- ret = si2157_load_firmware(fe, fw_name);
- else
- ret = -ENOENT;
- /* Try alternate name, if any */
- if (ret == -ENOENT && fw_alt_name)
- ret = si2157_load_firmware(fe, fw_alt_name);
- if (ret == -ENOENT) {
- if (!required) {
- dev_info(&client->dev, "Using ROM firmware.\n");
- return 0;
- }
- dev_err(&client->dev, "Can't continue without a firmware.\n");
- } else if (ret < 0) {
- dev_err(&client->dev, "error %d when loading firmware\n", ret);
- }
- return ret;
- }
- static int si2157_init(struct dvb_frontend *fe)
- {
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- unsigned int xtal_trim;
- struct si2157_cmd cmd;
- int ret;
- dev_dbg(&client->dev, "\n");
- /* Try to get Xtal trim property, to verify tuner still running */
- memcpy(cmd.args, "\x15\x00\x02\x04", 4);
- cmd.wlen = 4;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- xtal_trim = cmd.args[2] | (cmd.args[3] << 8);
- if (ret == 0 && xtal_trim < 16)
- goto warm;
- dev->if_frequency = 0; /* we no longer know current tuner state */
- /* power up */
- if (dev->part_id == SI2146) {
- /* clock_mode = XTAL, clock_freq = 24MHz */
- memcpy(cmd.args, "\xc0\x05\x01\x00\x00\x0b\x00\x00\x01", 9);
- cmd.wlen = 9;
- } else if (dev->part_id == SI2141) {
- /* clock_mode: XTAL, xout enabled */
- memcpy(cmd.args, "\xc0\x00\x0d\x0e\x00\x01\x01\x01\x01\x03", 10);
- cmd.wlen = 10;
- } else {
- memcpy(cmd.args, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15);
- cmd.wlen = 15;
- }
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret && (dev->part_id != SI2141 || ret != -EAGAIN))
- goto err;
- /* Si2141 needs a wake up command */
- if (dev->part_id == SI2141) {
- memcpy(cmd.args, "\xc0\x08\x01\x02\x00\x00\x01", 7);
- cmd.wlen = 7;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- }
- /* Try to load the firmware */
- ret = si2157_find_and_load_firmware(fe);
- if (ret < 0)
- goto err;
- /* reboot the tuner with new firmware? */
- memcpy(cmd.args, "\x01\x01", 2);
- cmd.wlen = 2;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* query firmware version */
- memcpy(cmd.args, "\x11", 1);
- cmd.wlen = 1;
- cmd.rlen = 10;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- dev_info(&client->dev, "firmware version: %c.%c.%d\n",
- cmd.args[6], cmd.args[7], cmd.args[8]);
- /* enable tuner status flags */
- memcpy(cmd.args, "\x14\x00\x01\x05\x01\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- memcpy(cmd.args, "\x14\x00\x01\x06\x01\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- memcpy(cmd.args, "\x14\x00\x01\x07\x01\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- warm:
- /* init statistics in order signal app which are supported */
- c->strength.len = 1;
- c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
- /* start statistics polling */
- schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(1000));
- dev->active = true;
- return 0;
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int si2157_sleep(struct dvb_frontend *fe)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- int ret;
- struct si2157_cmd cmd;
- dev_dbg(&client->dev, "\n");
- dev->active = false;
- /* stop statistics polling */
- cancel_delayed_work_sync(&dev->stat_work);
- /* standby */
- memcpy(cmd.args, "\x16\x00", 2);
- cmd.wlen = 2;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- return 0;
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int si2157_tune_wait(struct i2c_client *client, u8 is_digital)
- {
- #define TUN_TIMEOUT 40
- #define DIG_TIMEOUT 30
- #define ANALOG_TIMEOUT 150
- struct si2157_dev *dev = i2c_get_clientdata(client);
- int ret;
- unsigned long timeout;
- unsigned long start_time;
- u8 wait_status;
- u8 tune_lock_mask;
- if (is_digital)
- tune_lock_mask = 0x04;
- else
- tune_lock_mask = 0x02;
- mutex_lock(&dev->i2c_mutex);
- /* wait tuner command complete */
- start_time = jiffies;
- timeout = start_time + msecs_to_jiffies(TUN_TIMEOUT);
- while (1) {
- ret = i2c_master_recv(client, &wait_status,
- sizeof(wait_status));
- if (ret < 0) {
- goto err_mutex_unlock;
- } else if (ret != sizeof(wait_status)) {
- ret = -EREMOTEIO;
- goto err_mutex_unlock;
- }
- if (time_after(jiffies, timeout))
- break;
- /* tuner done? */
- if ((wait_status & 0x81) == 0x81)
- break;
- usleep_range(5000, 10000);
- }
- dev_dbg(&client->dev, "tuning took %d ms, status=0x%x\n",
- jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time),
- wait_status);
- /* if we tuned ok, wait a bit for tuner lock */
- if (tuner_lock_debug && (wait_status & 0x81) == 0x81) {
- if (is_digital)
- timeout = jiffies + msecs_to_jiffies(DIG_TIMEOUT);
- else
- timeout = jiffies + msecs_to_jiffies(ANALOG_TIMEOUT);
- while (!time_after(jiffies, timeout)) {
- ret = i2c_master_recv(client, &wait_status,
- sizeof(wait_status));
- if (ret < 0) {
- goto err_mutex_unlock;
- } else if (ret != sizeof(wait_status)) {
- ret = -EREMOTEIO;
- goto err_mutex_unlock;
- }
- /* tuner locked? */
- if (wait_status & tune_lock_mask)
- break;
- usleep_range(5000, 10000);
- }
- dev_dbg(&client->dev, "tuning+lock took %d ms, status=0x%x\n",
- jiffies_to_msecs(jiffies) - jiffies_to_msecs(start_time),
- wait_status);
- }
- if ((wait_status & 0xc0) != 0x80) {
- ret = -ETIMEDOUT;
- goto err_mutex_unlock;
- }
- mutex_unlock(&dev->i2c_mutex);
- return 0;
- err_mutex_unlock:
- mutex_unlock(&dev->i2c_mutex);
- dev_err(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int si2157_set_params(struct dvb_frontend *fe)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- int ret;
- struct si2157_cmd cmd;
- u8 bw, delivery_system;
- u32 bandwidth;
- u32 if_frequency = 5000000;
- dev_dbg(&client->dev,
- "delivery_system=%d frequency=%u bandwidth_hz=%u\n",
- c->delivery_system, c->frequency, c->bandwidth_hz);
- if (!dev->active) {
- ret = -EAGAIN;
- goto err;
- }
- if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 1700000) {
- bandwidth = 1700000;
- bw = 9;
- } else if (c->bandwidth_hz <= 6000000) {
- bandwidth = 6000000;
- bw = 6;
- } else if (SUPPORTS_1700KHz(dev) && c->bandwidth_hz <= 6100000) {
- bandwidth = 6100000;
- bw = 10;
- } else if (c->bandwidth_hz <= 7000000) {
- bandwidth = 7000000;
- bw = 7;
- } else {
- bandwidth = 8000000;
- bw = 8;
- }
- switch (c->delivery_system) {
- case SYS_ATSC:
- delivery_system = 0x00;
- if_frequency = 3250000;
- break;
- case SYS_DVBC_ANNEX_B:
- delivery_system = 0x10;
- if_frequency = 4000000;
- break;
- case SYS_DVBT:
- case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */
- delivery_system = 0x20;
- break;
- case SYS_DVBC_ANNEX_A:
- case SYS_DVBC_ANNEX_C:
- delivery_system = 0x30;
- break;
- case SYS_ISDBT:
- delivery_system = 0x40;
- break;
- case SYS_DTMB:
- delivery_system = 0x60;
- break;
- default:
- ret = -EINVAL;
- goto err;
- }
- memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6);
- cmd.args[4] = delivery_system | bw;
- if (dev->inversion)
- cmd.args[5] = 0x01;
- cmd.wlen = 6;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* On SI2146, set DTV AGC source to DLIF_AGC_3DB */
- if (dev->part_id == SI2146)
- memcpy(cmd.args, "\x14\x00\x02\x07\x00\x01", 6);
- else
- memcpy(cmd.args, "\x14\x00\x02\x07\x00\x00", 6);
- cmd.args[4] = dev->if_port;
- cmd.wlen = 6;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* set digital if frequency if needed */
- if (if_frequency != dev->if_frequency) {
- memcpy(cmd.args, "\x14\x00\x06\x07", 4);
- cmd.args[4] = (if_frequency / 1000) & 0xff;
- cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff;
- cmd.wlen = 6;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- dev->if_frequency = if_frequency;
- }
- /* set digital frequency */
- memcpy(cmd.args, "\x41\x00\x00\x00\x00\x00\x00\x00", 8);
- cmd.args[4] = (c->frequency >> 0) & 0xff;
- cmd.args[5] = (c->frequency >> 8) & 0xff;
- cmd.args[6] = (c->frequency >> 16) & 0xff;
- cmd.args[7] = (c->frequency >> 24) & 0xff;
- cmd.wlen = 8;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- dev->bandwidth = bandwidth;
- dev->frequency = c->frequency;
- si2157_tune_wait(client, 1); /* wait to complete, ignore any errors */
- return 0;
- err:
- dev->bandwidth = 0;
- dev->frequency = 0;
- dev->if_frequency = 0;
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int si2157_set_analog_params(struct dvb_frontend *fe,
- struct analog_parameters *params)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- char *std; /* for debugging */
- int ret;
- struct si2157_cmd cmd;
- u32 bandwidth = 0;
- u32 if_frequency = 0;
- u32 freq = 0;
- u64 tmp_lval = 0;
- u8 system = 0;
- u8 color = 0; /* 0=NTSC/PAL, 0x10=SECAM */
- u8 invert_analog = 1; /* analog tuner spectrum; 0=normal, 1=inverted */
- if (!SUPPORTS_ATV_IF(dev)) {
- dev_info(&client->dev, "Analog tuning not supported yet for Si21%d\n",
- dev->part_id);
- ret = -EINVAL;
- goto err;
- }
- if (!dev->active)
- si2157_init(fe);
- if (!dev->active) {
- ret = -EAGAIN;
- goto err;
- }
- if (params->mode == V4L2_TUNER_RADIO) {
- /*
- * std = "fm";
- * bandwidth = 1700000; //best can do for FM, AGC will be a mess though
- * if_frequency = 1250000; //HVR-225x(saa7164), HVR-12xx(cx23885)
- * if_frequency = 6600000; //HVR-9xx(cx231xx)
- * if_frequency = 5500000; //HVR-19xx(pvrusb2)
- */
- dev_err(&client->dev, "si2157 does not currently support FM radio\n");
- ret = -EINVAL;
- goto err;
- }
- tmp_lval = params->frequency * 625LL;
- do_div(tmp_lval, 10); /* convert to HZ */
- freq = (u32)tmp_lval;
- if (freq < 1000000) /* is freq in KHz */
- freq = freq * 1000;
- dev->frequency = freq;
- /* if_frequency values based on tda187271C2 */
- if (params->std & (V4L2_STD_B | V4L2_STD_GH)) {
- if (freq >= 470000000) {
- std = "palGH";
- bandwidth = 8000000;
- if_frequency = 6000000;
- system = 1;
- if (params->std &
- (V4L2_STD_SECAM_G | V4L2_STD_SECAM_H)) {
- std = "secamGH";
- color = 0x10;
- }
- } else {
- std = "palB";
- bandwidth = 7000000;
- if_frequency = 6000000;
- system = 0;
- if (params->std & V4L2_STD_SECAM_B) {
- std = "secamB";
- color = 0x10;
- }
- }
- } else if (params->std & V4L2_STD_MN) {
- std = "MN";
- bandwidth = 6000000;
- if_frequency = 5400000;
- system = 2;
- } else if (params->std & V4L2_STD_PAL_I) {
- std = "palI";
- bandwidth = 8000000;
- if_frequency = 7250000; /* TODO: does not work yet */
- system = 4;
- } else if (params->std & V4L2_STD_DK) {
- std = "palDK";
- bandwidth = 8000000;
- if_frequency = 6900000; /* TODO: does not work yet */
- system = 5;
- if (params->std & V4L2_STD_SECAM_DK) {
- std = "secamDK";
- color = 0x10;
- }
- } else if (params->std & V4L2_STD_SECAM_L) {
- std = "secamL";
- bandwidth = 8000000;
- if_frequency = 6750000; /* TODO: untested */
- system = 6;
- color = 0x10;
- } else if (params->std & V4L2_STD_SECAM_LC) {
- std = "secamL'";
- bandwidth = 7000000;
- if_frequency = 1250000; /* TODO: untested */
- system = 7;
- color = 0x10;
- } else {
- std = "unknown";
- }
- /* calc channel center freq */
- freq = freq - 1250000 + (bandwidth / 2);
- dev_dbg(&client->dev,
- "mode=%d system=%u std='%s' params->frequency=%u center freq=%u if=%u bandwidth=%u\n",
- params->mode, system, std, params->frequency,
- freq, if_frequency, bandwidth);
- /* set analog IF port */
- memcpy(cmd.args, "\x14\x00\x03\x06\x08\x02", 6);
- /* in using dev->if_port, we assume analog and digital IF's */
- /* are always on different ports */
- /* assumes if_port definition is 0 or 1 for digital out */
- cmd.args[4] = (dev->if_port == 1) ? 8 : 10;
- /* Analog AGC assumed external */
- cmd.args[5] = (dev->if_port == 1) ? 2 : 1;
- cmd.wlen = 6;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* set analog IF output config */
- memcpy(cmd.args, "\x14\x00\x0d\x06\x94\x64", 6);
- cmd.wlen = 6;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* make this distinct from a digital IF */
- dev->if_frequency = if_frequency | 1;
- /* calc and set tuner analog if center frequency */
- if_frequency = if_frequency + 1250000 - (bandwidth / 2);
- dev_dbg(&client->dev, "IF Ctr freq=%d\n", if_frequency);
- memcpy(cmd.args, "\x14\x00\x0C\x06", 4);
- cmd.args[4] = (if_frequency / 1000) & 0xff;
- cmd.args[5] = ((if_frequency / 1000) >> 8) & 0xff;
- cmd.wlen = 6;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* set analog AGC config */
- memcpy(cmd.args, "\x14\x00\x07\x06\x32\xc8", 6);
- cmd.wlen = 6;
- cmd.rlen = 4;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* set analog video mode */
- memcpy(cmd.args, "\x14\x00\x04\x06\x00\x00", 6);
- cmd.args[4] = system | color;
- /* can use dev->inversion if assumed applies to both digital/analog */
- if (invert_analog)
- cmd.args[5] |= 0x02;
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- /* set analog frequency */
- memcpy(cmd.args, "\x41\x01\x00\x00\x00\x00\x00\x00", 8);
- cmd.args[4] = (freq >> 0) & 0xff;
- cmd.args[5] = (freq >> 8) & 0xff;
- cmd.args[6] = (freq >> 16) & 0xff;
- cmd.args[7] = (freq >> 24) & 0xff;
- cmd.wlen = 8;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- dev->bandwidth = bandwidth;
- si2157_tune_wait(client, 0); /* wait to complete, ignore any errors */
- return 0;
- err:
- dev->bandwidth = 0;
- dev->frequency = 0;
- dev->if_frequency = 0;
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static int si2157_get_frequency(struct dvb_frontend *fe, u32 *frequency)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- *frequency = dev->frequency;
- dev_dbg(&client->dev, "freq=%u\n", dev->frequency);
- return 0;
- }
- static int si2157_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- *bandwidth = dev->bandwidth;
- dev_dbg(&client->dev, "bandwidth=%u\n", dev->bandwidth);
- return 0;
- }
- static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct si2157_dev *dev = i2c_get_clientdata(client);
- *frequency = dev->if_frequency & ~1; /* strip analog IF indicator bit */
- dev_dbg(&client->dev, "if_frequency=%u\n", *frequency);
- return 0;
- }
- static int si2157_get_rf_strength(struct dvb_frontend *fe, u16 *rssi)
- {
- struct i2c_client *client = fe->tuner_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct si2157_cmd cmd;
- int ret;
- int strength;
- dev_dbg(&client->dev, "\n");
- memcpy(cmd.args, "\x42\x00", 2);
- cmd.wlen = 2;
- cmd.rlen = 12;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- c->strength.stat[0].scale = FE_SCALE_DECIBEL;
- c->strength.stat[0].svalue = (s8)cmd.args[3] * 1000;
- /* normalize values based on Silicon Labs reference
- * add 100, then anything > 80 is 100% signal
- */
- strength = (s8)cmd.args[3] + 100;
- strength = clamp_val(strength, 0, 80);
- *rssi = (u16)(strength * 0xffff / 80);
- dev_dbg(&client->dev, "strength=%d rssi=%u\n",
- (s8)cmd.args[3], *rssi);
- return 0;
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static const struct dvb_tuner_ops si2157_ops = {
- .info = {
- .name = "Silicon Labs Si2141/Si2146/2147/2148/2157/2158",
- .frequency_min_hz = 42 * MHz,
- .frequency_max_hz = 870 * MHz,
- },
- .init = si2157_init,
- .sleep = si2157_sleep,
- .set_params = si2157_set_params,
- .set_analog_params = si2157_set_analog_params,
- .get_frequency = si2157_get_frequency,
- .get_bandwidth = si2157_get_bandwidth,
- .get_if_frequency = si2157_get_if_frequency,
- .get_rf_strength = si2157_get_rf_strength,
- };
- static void si2157_stat_work(struct work_struct *work)
- {
- struct si2157_dev *dev = container_of(work, struct si2157_dev, stat_work.work);
- struct dvb_frontend *fe = dev->fe;
- struct i2c_client *client = fe->tuner_priv;
- struct dtv_frontend_properties *c = &fe->dtv_property_cache;
- struct si2157_cmd cmd;
- int ret;
- dev_dbg(&client->dev, "\n");
- memcpy(cmd.args, "\x42\x00", 2);
- cmd.wlen = 2;
- cmd.rlen = 12;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret)
- goto err;
- c->strength.stat[0].scale = FE_SCALE_DECIBEL;
- c->strength.stat[0].svalue = (s8) cmd.args[3] * 1000;
- schedule_delayed_work(&dev->stat_work, msecs_to_jiffies(2000));
- return;
- err:
- c->strength.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
- dev_dbg(&client->dev, "failed=%d\n", ret);
- }
- static int si2157_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
- {
- struct si2157_config *cfg = client->dev.platform_data;
- struct dvb_frontend *fe = cfg->fe;
- struct si2157_dev *dev;
- struct si2157_cmd cmd;
- int ret;
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev) {
- ret = -ENOMEM;
- dev_err(&client->dev, "kzalloc() failed\n");
- goto err;
- }
- i2c_set_clientdata(client, dev);
- dev->fe = cfg->fe;
- dev->inversion = cfg->inversion;
- dev->dont_load_firmware = cfg->dont_load_firmware;
- dev->if_port = cfg->if_port;
- dev->part_id = (u8)id->driver_data;
- dev->if_frequency = 5000000; /* default value of property 0x0706 */
- mutex_init(&dev->i2c_mutex);
- INIT_DELAYED_WORK(&dev->stat_work, si2157_stat_work);
- /* check if the tuner is there */
- cmd.wlen = 0;
- cmd.rlen = 1;
- ret = si2157_cmd_execute(client, &cmd);
- if (ret && ret != -EAGAIN)
- goto err_kfree;
- memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops));
- fe->tuner_priv = client;
- #ifdef CONFIG_MEDIA_CONTROLLER
- if (cfg->mdev) {
- dev->mdev = cfg->mdev;
- dev->ent.name = KBUILD_MODNAME;
- dev->ent.function = MEDIA_ENT_F_TUNER;
- dev->pad[SI2157_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK;
- dev->pad[SI2157_PAD_RF_INPUT].sig_type = PAD_SIGNAL_ANALOG;
- dev->pad[SI2157_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE;
- dev->pad[SI2157_PAD_VID_OUT].sig_type = PAD_SIGNAL_ANALOG;
- dev->pad[SI2157_PAD_AUD_OUT].flags = MEDIA_PAD_FL_SOURCE;
- dev->pad[SI2157_PAD_AUD_OUT].sig_type = PAD_SIGNAL_AUDIO;
- ret = media_entity_pads_init(&dev->ent, SI2157_NUM_PADS,
- &dev->pad[0]);
- if (ret)
- goto err_kfree;
- ret = media_device_register_entity(cfg->mdev, &dev->ent);
- if (ret) {
- media_entity_cleanup(&dev->ent);
- goto err_kfree;
- }
- }
- #endif
- dev_info(&client->dev, "Silicon Labs Si21%d successfully attached\n",
- dev->part_id);
- return 0;
- err_kfree:
- kfree(dev);
- err:
- dev_dbg(&client->dev, "failed=%d\n", ret);
- return ret;
- }
- static void si2157_remove(struct i2c_client *client)
- {
- struct si2157_dev *dev = i2c_get_clientdata(client);
- struct dvb_frontend *fe = dev->fe;
- dev_dbg(&client->dev, "\n");
- /* stop statistics polling */
- cancel_delayed_work_sync(&dev->stat_work);
- #ifdef CONFIG_MEDIA_CONTROLLER_DVB
- if (dev->mdev)
- media_device_unregister_entity(&dev->ent);
- #endif
- memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
- fe->tuner_priv = NULL;
- kfree(dev);
- }
- /*
- * The part_id used here will only be used on buggy devices that don't
- * accept firmware uploads. Non-buggy devices should just use "si2157" for
- * all SiLabs TER tuners, as the driver should auto-detect it.
- */
- static const struct i2c_device_id si2157_id_table[] = {
- {"si2157", SI2157},
- {"si2146", SI2146},
- {"si2141", SI2141},
- {"si2177", SI2177},
- {}
- };
- MODULE_DEVICE_TABLE(i2c, si2157_id_table);
- static struct i2c_driver si2157_driver = {
- .driver = {
- .name = "si2157",
- .suppress_bind_attrs = true,
- },
- .probe = si2157_probe,
- .remove = si2157_remove,
- .id_table = si2157_id_table,
- };
- module_i2c_driver(si2157_driver);
- MODULE_DESCRIPTION("Silicon Labs Si2141/Si2146/2147/2148/2157/2158 silicon tuner driver");
- MODULE_AUTHOR("Antti Palosaari <[email protected]>");
- MODULE_LICENSE("GPL");
- MODULE_FIRMWARE(SI2158_A20_FIRMWARE);
- MODULE_FIRMWARE(SI2141_A10_FIRMWARE);
- MODULE_FIRMWARE(SI2157_A30_FIRMWARE);
- MODULE_FIRMWARE(SI2141_60_FIRMWARE);
- MODULE_FIRMWARE(SI2141_61_FIRMWARE);
- MODULE_FIRMWARE(SI2146_11_FIRMWARE);
- MODULE_FIRMWARE(SI2147_50_FIRMWARE);
- MODULE_FIRMWARE(SI2148_32_FIRMWARE);
- MODULE_FIRMWARE(SI2148_33_FIRMWARE);
- MODULE_FIRMWARE(SI2157_50_FIRMWARE);
- MODULE_FIRMWARE(SI2158_50_FIRMWARE);
- MODULE_FIRMWARE(SI2158_51_FIRMWARE);
- MODULE_FIRMWARE(SI2177_50_FIRMWARE);
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