From 6ab0584869a462c9358068f893a6bf4c2ff1e22b Mon Sep 17 00:00:00 2001
From: Clemens Ladisch <clemens@ladisch.de>
Date: Tue, 25 May 2010 09:04:49 +0200
Subject: [PATCH] --- yaml --- r: 198640 b: refs/heads/master c:
 4daf7a0c0b3dd3c2e2ec829ecee8608d04d67773 h: refs/heads/master v: v3

---
 [refs]                          |  2 +-
 trunk/sound/pci/emu10k1/emufx.c | 36 +++++++++++++++++++++++++--------
 2 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/[refs] b/[refs]
index 78c9823ff3ab..31e9c36d1e0b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b406e6103baa3da85950f22d3d46d21a8da654c5
+refs/heads/master: 4daf7a0c0b3dd3c2e2ec829ecee8608d04d67773
diff --git a/trunk/sound/pci/emu10k1/emufx.c b/trunk/sound/pci/emu10k1/emufx.c
index 4b302d86f5f2..7a9401462c1c 100644
--- a/trunk/sound/pci/emu10k1/emufx.c
+++ b/trunk/sound/pci/emu10k1/emufx.c
@@ -35,6 +35,7 @@
 #include <linux/vmalloc.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
+#include <linux/moduleparam.h>
 
 #include <sound/core.h>
 #include <sound/tlv.h>
@@ -50,6 +51,10 @@
 #define EMU10K1_CENTER_LFE_FROM_FRONT
 #endif
 
+static bool high_res_gpr_volume;
+module_param(high_res_gpr_volume, bool, 0444);
+MODULE_PARM_DESC(high_res_gpr_volume, "GPR mixer controls use 31-bit range.");
+
 /*
  *  Tables
  */ 
@@ -296,6 +301,7 @@ static const u32 db_table[101] = {
 
 /* EMU10k1/EMU10k2 DSP control db gain */
 static const DECLARE_TLV_DB_SCALE(snd_emu10k1_db_scale1, -4000, 40, 1);
+static const DECLARE_TLV_DB_LINEAR(snd_emu10k1_db_linear, TLV_DB_GAIN_MUTE, 0);
 
 static const u32 onoff_table[2] = {
 	0x00000000, 0x00000001
@@ -1072,10 +1078,17 @@ snd_emu10k1_init_mono_control(struct snd_emu10k1_fx8010_control_gpr *ctl,
 	strcpy(ctl->id.name, name);
 	ctl->vcount = ctl->count = 1;
 	ctl->gpr[0] = gpr + 0; ctl->value[0] = defval;
-	ctl->min = 0;
-	ctl->max = 100;
-	ctl->tlv = snd_emu10k1_db_scale1;
-	ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;	
+	if (high_res_gpr_volume) {
+		ctl->min = 0;
+		ctl->max = 0x7fffffff;
+		ctl->tlv = snd_emu10k1_db_linear;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_NONE;
+	} else {
+		ctl->min = 0;
+		ctl->max = 100;
+		ctl->tlv = snd_emu10k1_db_scale1;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
+	}
 }
 
 static void __devinit
@@ -1087,10 +1100,17 @@ snd_emu10k1_init_stereo_control(struct snd_emu10k1_fx8010_control_gpr *ctl,
 	ctl->vcount = ctl->count = 2;
 	ctl->gpr[0] = gpr + 0; ctl->value[0] = defval;
 	ctl->gpr[1] = gpr + 1; ctl->value[1] = defval;
-	ctl->min = 0;
-	ctl->max = 100;
-	ctl->tlv = snd_emu10k1_db_scale1;
-	ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
+	if (high_res_gpr_volume) {
+		ctl->min = 0;
+		ctl->max = 0x7fffffff;
+		ctl->tlv = snd_emu10k1_db_linear;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_NONE;
+	} else {
+		ctl->min = 0;
+		ctl->max = 100;
+		ctl->tlv = snd_emu10k1_db_scale1;
+		ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
+	}
 }
 
 static void __devinit