From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/media/dvb-frontends/si2168.c | 743 ++++++++++++++++++++++++++++ 1 file changed, 743 insertions(+) create mode 100644 kernel/drivers/media/dvb-frontends/si2168.c (limited to 'kernel/drivers/media/dvb-frontends/si2168.c') diff --git a/kernel/drivers/media/dvb-frontends/si2168.c b/kernel/drivers/media/dvb-frontends/si2168.c new file mode 100644 index 000000000..5db588ebf --- /dev/null +++ b/kernel/drivers/media/dvb-frontends/si2168.c @@ -0,0 +1,743 @@ +/* + * Silicon Labs Si2168 DVB-T/T2/C demodulator driver + * + * Copyright (C) 2014 Antti Palosaari + * + * 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 "si2168_priv.h" + +static const struct dvb_frontend_ops si2168_ops; + +/* 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)); + + 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_read_status(struct dvb_frontend *fe, fe_status_t *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; + struct si2168_cmd cmd; + + *status = 0; + + if (!dev->active) { + ret = -EAGAIN; + goto err; + } + + switch (c->delivery_system) { + case SYS_DVBT: + memcpy(cmd.args, "\xa0\x01", 2); + cmd.wlen = 2; + cmd.rlen = 13; + break; + case SYS_DVBC_ANNEX_A: + memcpy(cmd.args, "\x90\x01", 2); + cmd.wlen = 2; + cmd.rlen = 9; + break; + case SYS_DVBT2: + memcpy(cmd.args, "\x50\x01", 2); + cmd.wlen = 2; + cmd.rlen = 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); + + 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; + } + + memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); + cmd.wlen = 5; + cmd.rlen = 5; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* that has no big effect */ + if (c->delivery_system == SYS_DVBT) + memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); + else if (c->delivery_system == SYS_DVBC_ANNEX_A) + memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); + else if (c->delivery_system == SYS_DVBT2) + memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); + cmd.wlen = 6; + cmd.rlen = 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; + } + + memcpy(cmd.args, "\x51\x03", 2); + cmd.wlen = 2; + cmd.rlen = 12; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x12\x08\x04", 3); + cmd.wlen = 3; + cmd.rlen = 3; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); + cmd.args[4] = delivery_system | bandwidth; + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* set DVB-C symbol rate */ + if (c->delivery_system == SYS_DVBC_ANNEX_A) { + memcpy(cmd.args, "\x14\x00\x02\x11", 4); + cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff; + cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff; + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + } + + memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6); + cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6); + cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10; + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6); + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x85", 1); + cmd.wlen = 1; + cmd.rlen = 1; + ret = si2168_cmd_execute(client, &cmd); + 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 si2168_init(struct dvb_frontend *fe) +{ + struct i2c_client *client = fe->demodulator_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + int ret, len, remaining; + const struct firmware *fw; + const char *fw_name; + struct si2168_cmd cmd; + unsigned int chip_id; + + dev_dbg(&client->dev, "\n"); + + /* initialize */ + memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13); + cmd.wlen = 13; + cmd.rlen = 0; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + if (dev->fw_loaded) { + /* resume */ + memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8); + cmd.wlen = 8; + cmd.rlen = 1; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + memcpy(cmd.args, "\x85", 1); + cmd.wlen = 1; + cmd.rlen = 1; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + goto warm; + } + + /* power up */ + memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8); + cmd.wlen = 8; + cmd.rlen = 1; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* query chip revision */ + memcpy(cmd.args, "\x02", 1); + cmd.wlen = 1; + cmd.rlen = 13; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 | + cmd.args[4] << 0; + + #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0) + #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0) + #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0) + + switch (chip_id) { + case SI2168_A20: + fw_name = SI2168_A20_FIRMWARE; + break; + case SI2168_A30: + fw_name = SI2168_A30_FIRMWARE; + break; + case SI2168_B40: + fw_name = SI2168_B40_FIRMWARE; + break; + default: + dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n", + cmd.args[2], cmd.args[1], + cmd.args[3], cmd.args[4]); + ret = -EINVAL; + goto err; + } + + dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n", + cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]); + + /* request the firmware, this will block and timeout */ + ret = request_firmware(&fw, fw_name, &client->dev); + if (ret) { + /* fallback mechanism to handle old name for Si2168 B40 fw */ + if (chip_id == SI2168_B40) { + fw_name = SI2168_B40_FIRMWARE_FALLBACK; + ret = request_firmware(&fw, fw_name, &client->dev); + } + + if (ret == 0) { + dev_notice(&client->dev, + "please install firmware file '%s'\n", + SI2168_B40_FIRMWARE); + } else { + dev_err(&client->dev, + "firmware file '%s' not found\n", + fw_name); + goto err_release_firmware; + } + } + + dev_info(&client->dev, "downloading firmware from file '%s'\n", + fw_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]; + memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len); + cmd.wlen = len; + cmd.rlen = 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) { + len = 8; + memcpy(cmd.args, &fw->data[fw->size - remaining], len); + cmd.wlen = len; + cmd.rlen = 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); + + memcpy(cmd.args, "\x01\x01", 2); + cmd.wlen = 2; + cmd.rlen = 1; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + /* query firmware version */ + memcpy(cmd.args, "\x11", 1); + cmd.wlen = 1; + cmd.rlen = 10; + ret = si2168_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]); + + /* set ts mode */ + memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6); + cmd.args[4] |= dev->ts_mode; + cmd.wlen = 6; + cmd.rlen = 4; + ret = si2168_cmd_execute(client, &cmd); + if (ret) + goto err; + + dev->fw_loaded = true; +warm: + 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_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; + + memcpy(cmd.args, "\x13", 1); + cmd.wlen = 1; + cmd.rlen = 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; +} + +/* + * I2C gate logic + * We must use unlocked i2c_transfer() here because I2C lock is already taken + * by tuner driver. + */ +static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan) +{ + struct i2c_client *client = mux_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + int ret; + struct i2c_msg gate_open_msg = { + .addr = client->addr, + .flags = 0, + .len = 3, + .buf = "\xc0\x0d\x01", + }; + + mutex_lock(&dev->i2c_mutex); + + /* open tuner I2C gate */ + ret = __i2c_transfer(client->adapter, &gate_open_msg, 1); + if (ret != 1) { + dev_warn(&client->dev, "i2c write failed=%d\n", ret); + if (ret >= 0) + ret = -EREMOTEIO; + } else { + ret = 0; + } + + return ret; +} + +static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan) +{ + struct i2c_client *client = mux_priv; + struct si2168_dev *dev = i2c_get_clientdata(client); + int ret; + struct i2c_msg gate_close_msg = { + .addr = client->addr, + .flags = 0, + .len = 3, + .buf = "\xc0\x0d\x00", + }; + + /* close tuner I2C gate */ + ret = __i2c_transfer(client->adapter, &gate_close_msg, 1); + if (ret != 1) { + dev_warn(&client->dev, "i2c write failed=%d\n", ret); + if (ret >= 0) + ret = -EREMOTEIO; + } else { + ret = 0; + } + + mutex_unlock(&dev->i2c_mutex); + + return ret; +} + +static const struct dvb_frontend_ops si2168_ops = { + .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, + .info = { + .name = "Silicon Labs Si2168", + .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, + + .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; + + dev_dbg(&client->dev, "\n"); + + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) { + ret = -ENOMEM; + dev_err(&client->dev, "kzalloc() failed\n"); + goto err; + } + + mutex_init(&dev->i2c_mutex); + + /* create mux i2c adapter for tuner */ + dev->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, + client, 0, 0, 0, si2168_select, si2168_deselect); + if (dev->adapter == NULL) { + ret = -ENODEV; + 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->adapter; + *config->fe = &dev->fe; + dev->ts_mode = config->ts_mode; + dev->ts_clock_inv = config->ts_clock_inv; + dev->fw_loaded = false; + + i2c_set_clientdata(client, dev); + + dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n"); + return 0; +err_kfree: + kfree(dev); +err: + dev_dbg(&client->dev, "failed=%d\n", ret); + return ret; +} + +static int si2168_remove(struct i2c_client *client) +{ + struct si2168_dev *dev = i2c_get_clientdata(client); + + dev_dbg(&client->dev, "\n"); + + i2c_del_mux_adapter(dev->adapter); + + dev->fe.ops.release = NULL; + dev->fe.demodulator_priv = NULL; + + kfree(dev); + + return 0; +} + +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 = { + .owner = THIS_MODULE, + .name = "si2168", + }, + .probe = si2168_probe, + .remove = si2168_remove, + .id_table = si2168_id_table, +}; + +module_i2c_driver(si2168_driver); + +MODULE_AUTHOR("Antti Palosaari "); +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); -- cgit 1.2.3-korg