From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Wed, 10 Apr 2013 11:51:45 +0000 (-0300)
Subject: [media] r820t: add support for diplexer
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=84ddc33c20cd026871eb3585ed77badacb0fc113;p=openwrt%2Fstaging%2Fblogic.git

[media] r820t: add support for diplexer

This is part of the original driver, and adding it doesn't hurt,
so add it, to better sync the code.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Tested-by: Antti Palosaari <crope@iki.fi>
---

diff --git a/drivers/media/tuners/r820t.c b/drivers/media/tuners/r820t.c
index bb154449a2cf..5be4635c521d 100644
--- a/drivers/media/tuners/r820t.c
+++ b/drivers/media/tuners/r820t.c
@@ -101,6 +101,7 @@ struct r820t_freq_range {
 };
 
 #define VCO_POWER_REF   0x02
+#define DIP_FREQ	32000000
 
 /*
  * Static constants
@@ -751,6 +752,17 @@ static int r820t_sysfreq_sel(struct r820t_priv *priv, u32 freq,
 		break;
 	}
 
+	if (priv->cfg->use_diplexer &&
+	   ((priv->cfg->rafael_chip == CHIP_R820T) ||
+	   (priv->cfg->rafael_chip == CHIP_R828S) ||
+	   (priv->cfg->rafael_chip == CHIP_R820C))) {
+		if (freq > DIP_FREQ)
+			air_cable1_in = 0x00;
+		else
+			air_cable1_in = 0x60;
+		cable2_in = 0x00;
+	}
+
 	rc = r820t_write_reg_mask(priv, 0x1d, lna_top, 0xc7);
 	if (rc < 0)
 		return rc;
diff --git a/drivers/media/tuners/r820t.h b/drivers/media/tuners/r820t.h
index a64a7b630729..949575a41d49 100644
--- a/drivers/media/tuners/r820t.h
+++ b/drivers/media/tuners/r820t.h
@@ -32,10 +32,10 @@ enum r820t_chip {
 
 struct r820t_config {
 	u8 i2c_addr;		/* 0x34 */
-
 	u32 xtal;
 	enum r820t_chip rafael_chip;
 	unsigned max_i2c_msg_len;
+	bool use_diplexer;
 };
 
 #if IS_ENABLED(CONFIG_MEDIA_TUNER_R820T)