diff options
| -rw-r--r-- | drivers/media/tuners/si2157.c | 73 | ||||
| -rw-r--r-- | drivers/media/tuners/si2157.h | 2 | ||||
| -rw-r--r-- | drivers/media/tuners/si2157_priv.h | 5 |
3 files changed, 73 insertions, 7 deletions
diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index a92570f944ea..58c5ef586383 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -1,5 +1,5 @@ /* - * Silicon Labs Si2157 silicon tuner driver + * Silicon Labs Si2157/2158 silicon tuner driver * * Copyright (C) 2014 Antti Palosaari <crope@iki.fi> * @@ -16,6 +16,8 @@ #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) { @@ -80,8 +82,11 @@ err: static int si2157_init(struct dvb_frontend *fe) { struct si2157 *s = fe->tuner_priv; - int ret; + int ret, remaining; struct si2157_cmd cmd; + u8 chip, len = 0; + const struct firmware *fw = NULL; + u8 *fw_file; dev_dbg(&s->client->dev, "%s:\n", __func__); @@ -101,6 +106,64 @@ static int si2157_init(struct dvb_frontend *fe) if (ret) goto err; + chip = cmd.args[2]; /* 57 for Si2157, 58 for Si2158 */ + + /* Si2158 requires firmware download */ + if (chip == 58) { + if (((cmd.args[1] & 0x0f) == 1) && (cmd.args[3] == '2') && + (cmd.args[4] == '0')) + fw_file = SI2158_A20_FIRMWARE; + else { + dev_err(&s->client->dev, + "%s: no firmware file for Si%d-%c%c defined\n", + KBUILD_MODNAME, chip, cmd.args[3], cmd.args[4]); + ret = -EINVAL; + goto err; + } + + /* cold state - try to download firmware */ + dev_info(&s->client->dev, "%s: found a '%s' in cold state\n", + KBUILD_MODNAME, 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, "%s: firmware file '%s' not found\n", + KBUILD_MODNAME, fw_file); + goto err; + } + + dev_info(&s->client->dev, "%s: downloading firmware from file '%s'\n", + KBUILD_MODNAME, fw_file); + + /* firmware should be n chunks of 17 bytes */ + if (fw->size % 17 != 0) { + dev_err(&s->client->dev, "%s: firmware file '%s' is invalid\n", + KBUILD_MODNAME, fw_file); + ret = -EINVAL; + goto err; + } + + for (remaining = fw->size; remaining > 0; remaining -= 17) { + memcpy(&len, &fw->data[fw->size - remaining], 1); + 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, + "%s: firmware download failed=%d\n", + KBUILD_MODNAME, ret); + goto err; + } + } + + release_firmware(fw); + fw = NULL; + + } + /* reboot the tuner with new firmware? */ memcpy(cmd.args, "\x01\x01", 2); cmd.wlen = 2; @@ -177,7 +240,7 @@ err: static const struct dvb_tuner_ops si2157_tuner_ops = { .info = { - .name = "Silicon Labs Si2157", + .name = "Silicon Labs Si2157/Si2158", .frequency_min = 110000000, .frequency_max = 862000000, }, @@ -221,7 +284,7 @@ static int si2157_probe(struct i2c_client *client, i2c_set_clientdata(client, s); dev_info(&s->client->dev, - "%s: Silicon Labs Si2157 successfully attached\n", + "%s: Silicon Labs Si2157/Si2158 successfully attached\n", KBUILD_MODNAME); return 0; err: @@ -263,6 +326,6 @@ static struct i2c_driver si2157_driver = { 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"); diff --git a/drivers/media/tuners/si2157.h b/drivers/media/tuners/si2157.h index f469a092b66b..4465c46baf0e 100644 --- a/drivers/media/tuners/si2157.h +++ b/drivers/media/tuners/si2157.h @@ -1,5 +1,5 @@ /* - * Silicon Labs Si2157 silicon tuner driver + * Silicon Labs Si2157/2158 silicon tuner driver * * Copyright (C) 2014 Antti Palosaari <crope@iki.fi> * diff --git a/drivers/media/tuners/si2157_priv.h b/drivers/media/tuners/si2157_priv.h index 6db4c97c26a7..db79f3c40e4c 100644 --- a/drivers/media/tuners/si2157_priv.h +++ b/drivers/media/tuners/si2157_priv.h @@ -1,5 +1,5 @@ /* - * Silicon Labs Si2157 silicon tuner driver + * Silicon Labs Si2157/2158 silicon tuner driver * * Copyright (C) 2014 Antti Palosaari <crope@iki.fi> * @@ -17,6 +17,7 @@ #ifndef SI2157_PRIV_H #define SI2157_PRIV_H +#include <linux/firmware.h> #include "si2157.h" /* state struct */ @@ -35,4 +36,6 @@ struct si2157_cmd { unsigned rlen; }; +#define SI2158_A20_FIRMWARE "dvb-tuner-si2158-a20-01.fw" + #endif |