[media] si2157: Add support for Si2147-A30 tuner

This patch adds support for Si2147-A30 tuner. Fairly trivial, no firmware needed for this tuner. However, command 14 00 02 07 01 00 seems to be mandatory. On Si2157 and Si2158 the value 0x0100 is the default value, so this patch does not impact the existing tuners/devices. On Si2147 the default is 0x0000 and I can't get a lock with that value.

While here, fix the return length of the previous set command to 4 bytes.

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Acked-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

3 files changed, 13 insertions, 4 deletions

diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
index 5901484011b9..cf97142e01e6 100644
--- a/drivers/media/tuners/si2157.c
+++ b/drivers/media/tuners/si2157.c
@@ -1,5 +1,5 @@
 /*
- * Silicon Labs Si2157/2158 silicon tuner driver
+ * Silicon Labs Si2147/2157/2158 silicon tuner driver
  *
  * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
  *
@@ -113,12 +113,14 @@ static int si2157_init(struct dvb_frontend *fe)
 
         #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:
@@ -265,7 +267,14 @@ static int si2157_set_params(struct dvb_frontend *fe)
         if (s->inversion)
                 cmd.args[5] = 0x01;
         cmd.wlen = 6;
-        cmd.rlen = 1;
+        cmd.rlen = 4;
+        ret = si2157_cmd_execute(s, &cmd);
+        if (ret)
+                goto err;
+
+        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;
diff --git a/drivers/media/tuners/si2157.h b/drivers/media/tuners/si2157.h
index 6da4d5d1c817..d3b19cadb4a1 100644
--- a/drivers/media/tuners/si2157.h
+++ b/drivers/media/tuners/si2157.h
@@ -1,5 +1,5 @@
 /*
- * Silicon Labs Si2157/2158 silicon tuner driver
+ * Silicon Labs Si2147/2157/2158 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 4080a57962f0..e71ffafed951 100644
--- a/drivers/media/tuners/si2157_priv.h
+++ b/drivers/media/tuners/si2157_priv.h
@@ -1,5 +1,5 @@
 /*
- * Silicon Labs Si2157/2158 silicon tuner driver
+ * Silicon Labs Si2147/2157/2158 silicon tuner driver
  *
  * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
  *