ALSA: ice1724 - aureon - modify WM8770 Master & DAC volume
The volume levels in original implementation are incorrect and does
not match the dB scale. The real range is linear (in the sense of
the dB scale) from 0dB to -100dB. Remove logaritmic table and make
all volumes from range 0dB..100dB.
The tests are in RedHat's bugzilla #540817.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/ice1712/aureon.c b/sound/pci/ice1712/aureon.c
index 110d16e..765d7bd 100644
--- a/sound/pci/ice1712/aureon.c
+++ b/sound/pci/ice1712/aureon.c
@@ -689,32 +689,14 @@
return change;
}
-static const DECLARE_TLV_DB_SCALE(db_scale_wm_dac, -12700, 100, 1);
+static const DECLARE_TLV_DB_SCALE(db_scale_wm_dac, -10000, 100, 1);
static const DECLARE_TLV_DB_SCALE(db_scale_wm_pcm, -6400, 50, 1);
static const DECLARE_TLV_DB_SCALE(db_scale_wm_adc, -1200, 100, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_ac97_master, -4650, 150, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_ac97_gain, -3450, 150, 0);
-/*
- * Logarithmic volume values for WM8770
- * Computed as 20 * Log10(255 / x)
- */
-static const unsigned char wm_vol[256] = {
- 127, 48, 42, 39, 36, 34, 33, 31, 30, 29, 28, 27, 27, 26, 25, 25, 24, 24, 23,
- 23, 22, 22, 21, 21, 21, 20, 20, 20, 19, 19, 19, 18, 18, 18, 18, 17, 17, 17,
- 17, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13,
- 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11,
- 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8,
- 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0
-};
-
-#define WM_VOL_MAX (sizeof(wm_vol) - 1)
+#define WM_VOL_MAX 100
+#define WM_VOL_CNT 101 /* 0dB .. -100dB */
#define WM_VOL_MUTE 0x8000
static void wm_set_vol(struct snd_ice1712 *ice, unsigned int index, unsigned short vol, unsigned short master)
@@ -724,7 +706,8 @@
if ((master & WM_VOL_MUTE) || (vol & WM_VOL_MUTE))
nvol = 0;
else
- nvol = 127 - wm_vol[(((vol & ~WM_VOL_MUTE) * (master & ~WM_VOL_MUTE)) / 127) & WM_VOL_MAX];
+ nvol = ((vol % WM_VOL_CNT) * (master % WM_VOL_CNT)) /
+ WM_VOL_MAX;
wm_put(ice, index, nvol);
wm_put_nocache(ice, index, 0x180 | nvol);
@@ -820,7 +803,7 @@
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = voices;
uinfo->value.integer.min = 0; /* mute (-101dB) */
- uinfo->value.integer.max = 0x7F; /* 0dB */
+ uinfo->value.integer.max = WM_VOL_MAX; /* 0dB */
return 0;
}
@@ -850,7 +833,7 @@
snd_ice1712_save_gpio_status(ice);
for (i = 0; i < voices; i++) {
unsigned int vol = ucontrol->value.integer.value[i];
- if (vol > 0x7f)
+ if (vol > WM_VOL_MAX)
continue;
vol |= spec->vol[ofs+i];
if (vol != spec->vol[ofs+i]) {