/*
- * Silicon Labs Si2157 silicon tuner driver
+ * Silicon Labs Si2147/2157/2158 silicon tuner driver
*
* Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
*
#include "si2157_priv.h"
+static const struct dvb_tuner_ops si2157_ops;
+
/* execute firmware command */
static int si2157_cmd_execute(struct si2157 *s, struct si2157_cmd *cmd)
{
int ret;
- u8 buf[1];
unsigned long timeout;
mutex_lock(&s->i2c_mutex);
- if (cmd->len) {
+ if (cmd->wlen) {
/* write cmd and args for firmware */
- ret = i2c_master_send(s->client, cmd->args, cmd->len);
+ ret = i2c_master_send(s->client, cmd->args, cmd->wlen);
if (ret < 0) {
goto err_mutex_unlock;
- } else if (ret != cmd->len) {
+ } else if (ret != cmd->wlen) {
ret = -EREMOTEIO;
goto err_mutex_unlock;
}
}
- /* wait cmd execution terminate */
- #define TIMEOUT 80
- timeout = jiffies + msecs_to_jiffies(TIMEOUT);
- while (!time_after(jiffies, timeout)) {
- ret = i2c_master_recv(s->client, buf, 1);
- if (ret < 0) {
- goto err_mutex_unlock;
- } else if (ret != 1) {
- 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(s->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;
}
- /* firmware ready? */
- if ((buf[0] >> 7) & 0x01)
- break;
- }
-
- dev_dbg(&s->client->dev, "%s: cmd execution took %d ms\n", __func__,
- jiffies_to_msecs(jiffies) -
- (jiffies_to_msecs(timeout) - TIMEOUT));
+ dev_dbg(&s->client->dev, "cmd execution took %d ms\n",
+ jiffies_to_msecs(jiffies) -
+ (jiffies_to_msecs(timeout) - TIMEOUT));
- if (!((buf[0] >> 7) & 0x01)) {
- ret = -ETIMEDOUT;
- goto err_mutex_unlock;
- } else {
- ret = 0;
+ if (!((cmd->args[0] >> 7) & 0x01)) {
+ ret = -ETIMEDOUT;
+ goto err_mutex_unlock;
+ }
}
+ ret = 0;
+
err_mutex_unlock:
mutex_unlock(&s->i2c_mutex);
if (ret)
return 0;
err:
- dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
return ret;
}
static int si2157_init(struct dvb_frontend *fe)
{
struct si2157 *s = fe->tuner_priv;
+ int ret, len, remaining;
+ struct si2157_cmd cmd;
+ const struct firmware *fw = NULL;
+ u8 *fw_file;
+ unsigned int chip_id;
- dev_dbg(&s->client->dev, "%s:\n", __func__);
+ dev_dbg(&s->client->dev, "\n");
- s->active = true;
+ if (s->fw_loaded)
+ goto warm;
+
+ /* power up */
+ 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(s, &cmd);
+ if (ret)
+ goto err;
+
+ /* query chip revision */
+ memcpy(cmd.args, "\x02", 1);
+ cmd.wlen = 1;
+ cmd.rlen = 13;
+ ret = si2157_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
+ cmd.args[4] << 0;
+
+ #define SI2158_A20 ('A' << 24 | 58 << 16 | '2' << 8 | '0' << 0)
+ #define SI2157_A30 ('A' << 24 | 57 << 16 | '3' << 8 | '0' << 0)
+ #define SI2147_A30 ('A' << 24 | 47 << 16 | '3' << 8 | '0' << 0)
+
+ switch (chip_id) {
+ case SI2158_A20:
+ fw_file = SI2158_A20_FIRMWARE;
+ break;
+ case SI2157_A30:
+ case SI2147_A30:
+ goto skip_fw_download;
+ break;
+ default:
+ dev_err(&s->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;
+ }
+
+ /* cold state - try to download firmware */
+ dev_info(&s->client->dev, "found a '%s' in cold state\n",
+ si2157_ops.info.name);
+
+ /* request the firmware, this will block and timeout */
+ ret = request_firmware(&fw, fw_file, &s->client->dev);
+ if (ret) {
+ dev_err(&s->client->dev, "firmware file '%s' not found\n",
+ fw_file);
+ goto err;
+ }
+
+ /* firmware should be n chunks of 17 bytes */
+ if (fw->size % 17 != 0) {
+ dev_err(&s->client->dev, "firmware file '%s' is invalid\n",
+ fw_file);
+ ret = -EINVAL;
+ goto err;
+ }
+
+ dev_info(&s->client->dev, "downloading firmware from file '%s'\n",
+ fw_file);
+
+ 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 = si2157_cmd_execute(s, &cmd);
+ if (ret) {
+ dev_err(&s->client->dev,
+ "firmware download failed=%d\n",
+ ret);
+ goto err;
+ }
+ }
+
+ release_firmware(fw);
+ fw = NULL;
+
+skip_fw_download:
+ /* reboot the tuner with new firmware? */
+ memcpy(cmd.args, "\x01\x01", 2);
+ cmd.wlen = 2;
+ cmd.rlen = 1;
+ ret = si2157_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ s->fw_loaded = true;
+warm:
+ s->active = true;
return 0;
+
+err:
+ if (fw)
+ release_firmware(fw);
+
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
+ return ret;
}
static int si2157_sleep(struct dvb_frontend *fe)
{
struct si2157 *s = fe->tuner_priv;
+ int ret;
+ struct si2157_cmd cmd;
- dev_dbg(&s->client->dev, "%s:\n", __func__);
+ dev_dbg(&s->client->dev, "\n");
s->active = false;
+ /* standby */
+ memcpy(cmd.args, "\x16\x00", 2);
+ cmd.wlen = 2;
+ cmd.rlen = 1;
+ ret = si2157_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
return 0;
+err:
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
+ return ret;
}
static int si2157_set_params(struct dvb_frontend *fe)
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
struct si2157_cmd cmd;
+ u8 bandwidth, delivery_system;
dev_dbg(&s->client->dev,
- "%s: delivery_system=%d frequency=%u bandwidth_hz=%u\n",
- __func__, c->delivery_system, c->frequency,
+ "delivery_system=%d frequency=%u bandwidth_hz=%u\n",
+ c->delivery_system, c->frequency,
c->bandwidth_hz);
if (!s->active) {
goto err;
}
- /* configure? */
- cmd.args[0] = 0xc0;
- cmd.args[1] = 0x00;
- cmd.args[2] = 0x0c;
- cmd.args[3] = 0x00;
- cmd.args[4] = 0x00;
- cmd.args[5] = 0x01;
- cmd.args[6] = 0x01;
- cmd.args[7] = 0x01;
- cmd.args[8] = 0x01;
- cmd.args[9] = 0x01;
- cmd.args[10] = 0x01;
- cmd.args[11] = 0x02;
- cmd.args[12] = 0x00;
- cmd.args[13] = 0x00;
- cmd.args[14] = 0x01;
- cmd.len = 15;
- ret = si2157_cmd_execute(s, &cmd);
- if (ret)
- goto err;
+ if (c->bandwidth_hz <= 6000000)
+ bandwidth = 0x06;
+ else if (c->bandwidth_hz <= 7000000)
+ bandwidth = 0x07;
+ else if (c->bandwidth_hz <= 8000000)
+ bandwidth = 0x08;
+ else
+ bandwidth = 0x0f;
+
+ switch (c->delivery_system) {
+ case SYS_ATSC:
+ delivery_system = 0x00;
+ 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:
+ delivery_system = 0x30;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
- cmd.args[0] = 0x02;
- cmd.len = 1;
+ memcpy(cmd.args, "\x14\x00\x03\x07\x00\x00", 6);
+ cmd.args[4] = delivery_system | bandwidth;
+ if (s->inversion)
+ cmd.args[5] = 0x01;
+ cmd.wlen = 6;
+ cmd.rlen = 4;
ret = si2157_cmd_execute(s, &cmd);
if (ret)
goto err;
- cmd.args[0] = 0x01;
- cmd.args[1] = 0x01;
- cmd.len = 2;
+ memcpy(cmd.args, "\x14\x00\x02\x07\x01\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 4;
ret = si2157_cmd_execute(s, &cmd);
if (ret)
goto err;
/* set frequency */
- cmd.args[0] = 0x41;
- cmd.args[1] = 0x00;
- cmd.args[2] = 0x00;
- cmd.args[3] = 0x00;
+ 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.len = 8;
+ cmd.wlen = 8;
+ cmd.rlen = 1;
ret = si2157_cmd_execute(s, &cmd);
if (ret)
goto err;
return 0;
err:
- dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
return ret;
}
-static const struct dvb_tuner_ops si2157_tuner_ops = {
+static int si2157_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ *frequency = 5000000; /* default value of property 0x0706 */
+ return 0;
+}
+
+static const struct dvb_tuner_ops si2157_ops = {
.info = {
- .name = "Silicon Labs Si2157",
+ .name = "Silicon Labs Si2157/Si2158",
.frequency_min = 110000000,
.frequency_max = 862000000,
},
.init = si2157_init,
.sleep = si2157_sleep,
.set_params = si2157_set_params,
+ .get_if_frequency = si2157_get_if_frequency,
};
static int si2157_probe(struct i2c_client *client,
s = kzalloc(sizeof(struct si2157), GFP_KERNEL);
if (!s) {
ret = -ENOMEM;
- dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
+ dev_err(&client->dev, "kzalloc() failed\n");
goto err;
}
s->client = client;
s->fe = cfg->fe;
+ s->inversion = cfg->inversion;
+ s->fw_loaded = false;
mutex_init(&s->i2c_mutex);
/* check if the tuner is there */
- cmd.len = 0;
+ cmd.wlen = 0;
+ cmd.rlen = 1;
ret = si2157_cmd_execute(s, &cmd);
if (ret)
goto err;
fe->tuner_priv = s;
- memcpy(&fe->ops.tuner_ops, &si2157_tuner_ops,
+ memcpy(&fe->ops.tuner_ops, &si2157_ops,
sizeof(struct dvb_tuner_ops));
i2c_set_clientdata(client, s);
dev_info(&s->client->dev,
- "%s: Silicon Labs Si2157 successfully attached\n",
- KBUILD_MODNAME);
+ "Silicon Labs Si2157/Si2158 successfully attached\n");
return 0;
err:
- dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&client->dev, "failed=%d\n", ret);
kfree(s);
return ret;
struct si2157 *s = i2c_get_clientdata(client);
struct dvb_frontend *fe = s->fe;
- dev_dbg(&client->dev, "%s:\n", __func__);
+ dev_dbg(&client->dev, "\n");
memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
fe->tuner_priv = NULL;
module_i2c_driver(si2157_driver);
-MODULE_DESCRIPTION("Silicon Labs Si2157 silicon tuner driver");
+MODULE_DESCRIPTION("Silicon Labs Si2157/Si2158 silicon tuner driver");
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_LICENSE("GPL");
+MODULE_FIRMWARE(SI2158_A20_FIRMWARE);
projects / cascardo / linux.git / blobdiff