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ASoC: Tune performance of WM8958 revision A

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Update some of the default configuration for the device to improve
the performance.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Mark Brown 2010-11-30 14:56:18 +00:00
parent dd31b310b9
commit 8bc3c2c207
2 changed files with 36 additions and 9 deletions
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9
include/linux/mfd/wm8994/registers.h
View file

@ -64,6 +64,7 @@
#define WM8994_LDO_1 0x3B
#define WM8994_LDO_2 0x3C
#define WM8994_CHARGE_PUMP_1 0x4C
#define WM8958_CHARGE_PUMP_2 0x4D
#define WM8994_CLASS_W_1 0x51
#define WM8994_DC_SERVO_1 0x54
#define WM8994_DC_SERVO_2 0x55
@ -1925,6 +1926,14 @@
#define WM8994_CP_ENA_SHIFT 15 /* CP_ENA */
#define WM8994_CP_ENA_WIDTH 1 /* CP_ENA */
/*
* R77 (0x4D) - Charge Pump (2)
*/
#define WM8958_CP_DISCH 0x8000 /* CP_DISCH */
#define WM8958_CP_DISCH_MASK 0x8000 /* CP_DISCH */
#define WM8958_CP_DISCH_SHIFT 15 /* CP_DISCH */
#define WM8958_CP_DISCH_WIDTH 1 /* CP_DISCH */
/*
* R81 (0x51) - Class W (1)
*/

36
sound/soc/codecs/wm8994.c
View file

@ -1858,15 +1858,33 @@ static int wm8994_set_bias_level(struct snd_soc_codec *codec,
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
pm_runtime_get_sync(codec->dev);
/* Tweak DC servo and DSP configuration for
* improved performance. */
if (control->type == WM8994 && wm8994->revision < 4) {
/* Tweak DC servo and DSP configuration for
* improved performance. */
snd_soc_write(codec, 0x102, 0x3);
snd_soc_write(codec, 0x56, 0x3);
snd_soc_write(codec, 0x817, 0);
snd_soc_write(codec, 0x102, 0);
switch (control->type) {
case WM8994:
if (wm8994->revision < 4) {
/* Tweak DC servo and DSP
* configuration for improved
* performance. */
snd_soc_write(codec, 0x102, 0x3);
snd_soc_write(codec, 0x56, 0x3);
snd_soc_write(codec, 0x817, 0);
snd_soc_write(codec, 0x102, 0);
}
break;
case WM8958:
if (wm8994->revision == 0) {
/* Optimise performance for rev A */
snd_soc_write(codec, 0x102, 0x3);
snd_soc_write(codec, 0xcb, 0x81);
snd_soc_write(codec, 0x817, 0);
snd_soc_write(codec, 0x102, 0);
snd_soc_update_bits(codec,
WM8958_CHARGE_PUMP_2,
WM8958_CP_DISCH,
WM8958_CP_DISCH);
}
break;
}
/* Discharge LINEOUT1 & 2 */