From: Olli Salonen <olli.salonen@xxxxxx>
Add support for Si2158 A20 chip.
Signed-off-by: Olli Salonen <olli.salonen@xxxxxx>
Reviewed-by: Antti Palosaari <crope@xxxxxx>
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/tuners/si2157.c | 73 +++++++++++++++++++++++++++++++++++---
drivers/media/tuners/si2157.h | 2 +-
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 a92570f9..58c5ef5 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@xxxxxx>
*
@@ -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@xxxxxx>");
MODULE_LICENSE("GPL");
diff --git a/drivers/media/tuners/si2157.h b/drivers/media/tuners/si2157.h
index f469a09..4465c46 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@xxxxxx>
*
diff --git a/drivers/media/tuners/si2157_priv.h b/drivers/media/tuners/si2157_priv.h
index 6db4c97..db79f3c 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@xxxxxx>
*
@@ -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
--
1.9.3
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