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authorClemens Ladisch <clemens@ladisch.de>2010-05-25 03:04:49 -0400
committerTakashi Iwai <tiwai@suse.de>2010-05-25 14:23:54 -0400
commit4daf7a0c0b3dd3c2e2ec829ecee8608d04d67773 (patch)
tree1934d7b283f2385afc27aa48fa020f86779b6098 /sound/pci/emu10k1
parentb406e6103baa3da85950f22d3d46d21a8da654c5 (diff)
ALSA: emu10k1: allow high-resolution mixer controls
Add a module option to allow the GPR mixer controls to have the full resolution of the hardware, i.e., 0...2^31-1 instead of 0...100. Because of bugs in userspace tools like alsactl and alsamixer, this is not yet enabled by default. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/emu10k1')
-rw-r--r--sound/pci/emu10k1/emufx.c36
1 files changed, 28 insertions, 8 deletions
diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index 4b302d86f5f2..7a9401462c1c 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -35,6 +35,7 @@
35#include <linux/vmalloc.h> 35#include <linux/vmalloc.h>
36#include <linux/init.h> 36#include <linux/init.h>
37#include <linux/mutex.h> 37#include <linux/mutex.h>
38#include <linux/moduleparam.h>
38 39
39#include <sound/core.h> 40#include <sound/core.h>
40#include <sound/tlv.h> 41#include <sound/tlv.h>
@@ -50,6 +51,10 @@
50#define EMU10K1_CENTER_LFE_FROM_FRONT 51#define EMU10K1_CENTER_LFE_FROM_FRONT
51#endif 52#endif
52 53
54static bool high_res_gpr_volume;
55module_param(high_res_gpr_volume, bool, 0444);
56MODULE_PARM_DESC(high_res_gpr_volume, "GPR mixer controls use 31-bit range.");
57
53/* 58/*
54 * Tables 59 * Tables
55 */ 60 */
@@ -296,6 +301,7 @@ static const u32 db_table[101] = {
296 301
297/* EMU10k1/EMU10k2 DSP control db gain */ 302/* EMU10k1/EMU10k2 DSP control db gain */
298static const DECLARE_TLV_DB_SCALE(snd_emu10k1_db_scale1, -4000, 40, 1); 303static const DECLARE_TLV_DB_SCALE(snd_emu10k1_db_scale1, -4000, 40, 1);
304static const DECLARE_TLV_DB_LINEAR(snd_emu10k1_db_linear, TLV_DB_GAIN_MUTE, 0);
299 305
300static const u32 onoff_table[2] = { 306static const u32 onoff_table[2] = {
301 0x00000000, 0x00000001 307 0x00000000, 0x00000001
@@ -1072,10 +1078,17 @@ snd_emu10k1_init_mono_control(struct snd_emu10k1_fx8010_control_gpr *ctl,
1072 strcpy(ctl->id.name, name); 1078 strcpy(ctl->id.name, name);
1073 ctl->vcount = ctl->count = 1; 1079 ctl->vcount = ctl->count = 1;
1074 ctl->gpr[0] = gpr + 0; ctl->value[0] = defval; 1080 ctl->gpr[0] = gpr + 0; ctl->value[0] = defval;
1075 ctl->min = 0; 1081 if (high_res_gpr_volume) {
1076 ctl->max = 100; 1082 ctl->min = 0;
1077 ctl->tlv = snd_emu10k1_db_scale1; 1083 ctl->max = 0x7fffffff;
1078 ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100; 1084 ctl->tlv = snd_emu10k1_db_linear;
1085 ctl->translation = EMU10K1_GPR_TRANSLATION_NONE;
1086 } else {
1087 ctl->min = 0;
1088 ctl->max = 100;
1089 ctl->tlv = snd_emu10k1_db_scale1;
1090 ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
1091 }
1079} 1092}
1080 1093
1081static void __devinit 1094static void __devinit
@@ -1087,10 +1100,17 @@ snd_emu10k1_init_stereo_control(struct snd_emu10k1_fx8010_control_gpr *ctl,
1087 ctl->vcount = ctl->count = 2; 1100 ctl->vcount = ctl->count = 2;
1088 ctl->gpr[0] = gpr + 0; ctl->value[0] = defval; 1101 ctl->gpr[0] = gpr + 0; ctl->value[0] = defval;
1089 ctl->gpr[1] = gpr + 1; ctl->value[1] = defval; 1102 ctl->gpr[1] = gpr + 1; ctl->value[1] = defval;
1090 ctl->min = 0; 1103 if (high_res_gpr_volume) {
1091 ctl->max = 100; 1104 ctl->min = 0;
1092 ctl->tlv = snd_emu10k1_db_scale1; 1105 ctl->max = 0x7fffffff;
1093 ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100; 1106 ctl->tlv = snd_emu10k1_db_linear;
1107 ctl->translation = EMU10K1_GPR_TRANSLATION_NONE;
1108 } else {
1109 ctl->min = 0;
1110 ctl->max = 100;
1111 ctl->tlv = snd_emu10k1_db_scale1;
1112 ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
1113 }
1094} 1114}
1095 1115
1096static void __devinit 1116static void __devinit