From d7304dee3b7e29e801ba59bbf9a47440c196263d Mon Sep 17 00:00:00 2001
From: Trent Piepho <xyzzy@speakeasy.org>
Date: Thu, 24 Aug 2006 22:43:45 -0300
Subject: V4L/DVB (4533): Tda9887: add configuration setting for L standard PLL
 gating

Add a tuner config parameter for TDA9887, default_pll_gating_18, that
changes the L standard PLL gating value from 36% to 0% (datasheet says
0%, tda9887 code says 18%).
Turn this on for Microtune 4049FM5, as recomended by tuner datasheet.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

diff --git a/drivers/media/video/tda9887.c b/drivers/media/video/tda9887.c
index 8dab481..87ffb0e 100644
--- a/drivers/media/video/tda9887.c
+++ b/drivers/media/video/tda9887.c
@@ -480,6 +480,8 @@ static int tda9887_set_config(struct tuner *t, char *buf)
 	}
 	if ((t->tda9887_config & TDA9887_INTERCARRIER_NTSC) && (t->std & V4L2_STD_NTSC))
 		buf[1] &= ~cQSS;
+	if (t->tda9887_config & TDA9887_GATING_18)
+		buf[3] &= ~cGating_36;
 	return 0;
 }
 
diff --git a/drivers/media/video/tuner-simple.c b/drivers/media/video/tuner-simple.c
index 4cfe71b..63db4e9 100644
--- a/drivers/media/video/tuner-simple.c
+++ b/drivers/media/video/tuner-simple.c
@@ -331,6 +331,8 @@ static void default_set_tv_freq(struct i2c_client *c, unsigned int freq)
 			else if (params->default_top_high)
 				config |= TDA9887_TOP(params->default_top_high);
 		}
+		if (params->default_pll_gating_18)
+			config |= TDA9887_GATING_18;
 		i2c_clients_command(c->adapter, TDA9887_SET_CONFIG, &config);
 	}
 	tuner_dbg("tv 0x%02x 0x%02x 0x%02x 0x%02x\n",
diff --git a/drivers/media/video/tuner-types.c b/drivers/media/video/tuner-types.c
index 8b54259..8fff642 100644
--- a/drivers/media/video/tuner-types.c
+++ b/drivers/media/video/tuner-types.c
@@ -650,6 +650,7 @@ static struct tuner_params tuner_microtune_4049_fm5_params[] = {
 		.count  = ARRAY_SIZE(tuner_temic_4009f_5_pal_ranges),
 		.has_tda9887 = 1,
 		.port1_invert_for_secam_lc = 1,
+		.default_pll_gating_18 = 1,
 	},
 };
 
diff --git a/include/media/tuner-types.h b/include/media/tuner-types.h
index 3c43b95f4..37dad07 100644
--- a/include/media/tuner-types.h
+++ b/include/media/tuner-types.h
@@ -72,6 +72,9 @@ struct tuner_params {
 	unsigned int port2_invert_for_secam_lc:1;
 	/* Some cards require PORT1 to be 1 for mono Radio FM and 0 for stereo. */
 	unsigned int port1_set_for_fm_mono:1;
+	/* Select 18% (or according to datasheet 0%) L standard PLL gating,
+	   vs the driver default of 36%. */
+	unsigned int default_pll_gating_18:1;
 	/* Default tda9887 TOP value in dB for the low band. Default is 0.
 	   Range: -16:+15 */
 	signed int default_top_low:5;
diff --git a/include/media/tuner.h b/include/media/tuner.h
index 2f7b00b..3116e75 100644
--- a/include/media/tuner.h
+++ b/include/media/tuner.h
@@ -144,6 +144,7 @@ extern int tuner_debug;
 #define TDA9887_DEEMPHASIS_50 		(2<<16)
 #define TDA9887_DEEMPHASIS_75 		(3<<16)
 #define TDA9887_AUTOMUTE 		(1<<18)
+#define TDA9887_GATING_18		(1<<19)
 
 #ifdef __KERNEL__
 
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