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ASoC: Convert WM8903 to use PGA_S for output stage enables

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This simplfies the code and slightly reduces the startup time.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Mark Brown 2011-02-09 17:42:55 +00:00
parent 1e113bf9e0
commit 13a9983eb1
1 changed files with 58 additions and 118 deletions
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176
sound/soc/codecs/wm8903.c
View file

@ -246,6 +246,8 @@ static int wm8903_volatile_register(struct snd_soc_codec *codec, unsigned int re
case WM8903_REVISION_NUMBER:
case WM8903_INTERRUPT_STATUS_1:
case WM8903_WRITE_SEQUENCER_4:
case WM8903_POWER_MANAGEMENT_3:
case WM8903_POWER_MANAGEMENT_2:
return 1;
default:
@ -304,11 +306,6 @@ static void wm8903_reset(struct snd_soc_codec *codec)
sizeof(wm8903_reg_defaults));
}
#define WM8903_OUTPUT_SHORT 0x8
#define WM8903_OUTPUT_OUT 0x4
#define WM8903_OUTPUT_INT 0x2
#define WM8903_OUTPUT_IN 0x1
static int wm8903_cp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
@ -318,99 +315,6 @@ static int wm8903_cp_event(struct snd_soc_dapm_widget *w,
return 0;
}
/*
* Event for headphone and line out amplifier power changes. Special
* power up/down sequences are required in order to maximise pop/click
* performance.
*/
static int wm8903_output_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
u16 val;
u16 reg;
u16 dcs_reg;
u16 dcs_bit;
int shift;
switch (w->reg) {
case WM8903_POWER_MANAGEMENT_2:
reg = WM8903_ANALOGUE_HP_0;
dcs_bit = 0 + w->shift;
break;
case WM8903_POWER_MANAGEMENT_3:
reg = WM8903_ANALOGUE_LINEOUT_0;
dcs_bit = 2 + w->shift;
break;
default:
BUG();
return -EINVAL; /* Spurious warning from some compilers */
}
switch (w->shift) {
case 0:
shift = 0;
break;
case 1:
shift = 4;
break;
default:
BUG();
return -EINVAL; /* Spurious warning from some compilers */
}
if (event & SND_SOC_DAPM_PRE_PMU) {
val = snd_soc_read(codec, reg);
/* Short the output */
val &= ~(WM8903_OUTPUT_SHORT << shift);
snd_soc_write(codec, reg, val);
}
if (event & SND_SOC_DAPM_POST_PMU) {
val = snd_soc_read(codec, reg);
val |= (WM8903_OUTPUT_IN << shift);
snd_soc_write(codec, reg, val);
val |= (WM8903_OUTPUT_INT << shift);
snd_soc_write(codec, reg, val);
/* Turn on the output ENA_OUTP */
val |= (WM8903_OUTPUT_OUT << shift);
snd_soc_write(codec, reg, val);
/* Enable the DC servo */
dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0);
dcs_reg |= dcs_bit;
snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg);
/* Remove the short */
val |= (WM8903_OUTPUT_SHORT << shift);
snd_soc_write(codec, reg, val);
}
if (event & SND_SOC_DAPM_PRE_PMD) {
val = snd_soc_read(codec, reg);
/* Short the output */
val &= ~(WM8903_OUTPUT_SHORT << shift);
snd_soc_write(codec, reg, val);
/* Disable the DC servo */
dcs_reg = snd_soc_read(codec, WM8903_DC_SERVO_0);
dcs_reg &= ~dcs_bit;
snd_soc_write(codec, WM8903_DC_SERVO_0, dcs_reg);
/* Then disable the intermediate and output stages */
val &= ~((WM8903_OUTPUT_OUT | WM8903_OUTPUT_INT |
WM8903_OUTPUT_IN) << shift);
snd_soc_write(codec, reg, val);
}
return 0;
}
/*
* When used with DAC outputs only the WM8903 charge pump supports
* operation in class W mode, providing very low power consumption
@ -913,23 +817,40 @@ SND_SOC_DAPM_MIXER("Left Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 1, 0,
SND_SOC_DAPM_MIXER("Right Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 0, 0,
right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
SND_SOC_DAPM_PGA_E("Left Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
1, 0, NULL, 0, wm8903_output_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_E("Right Headphone Output PGA", WM8903_POWER_MANAGEMENT_2,
0, 0, NULL, 0, wm8903_output_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_S("Left Headphone Output PGA", 0, WM8903_ANALOGUE_HP_0,
4, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Right Headphone Output PGA", 0, WM8903_ANALOGUE_HP_0,
0, 0, NULL, 0),
SND_SOC_DAPM_PGA_E("Left Line Output PGA", WM8903_POWER_MANAGEMENT_3, 1, 0,
NULL, 0, wm8903_output_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_E("Right Line Output PGA", WM8903_POWER_MANAGEMENT_3, 0, 0,
NULL, 0, wm8903_output_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_S("Left Line Output PGA", 0, WM8903_ANALOGUE_LINEOUT_0, 4, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("Right Line Output PGA", 0, WM8903_ANALOGUE_LINEOUT_0, 0, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("HPL_RMV_SHORT", 4, WM8903_ANALOGUE_HP_0, 7, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("HPL_ENA_OUTP", 3, WM8903_ANALOGUE_HP_0, 6, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("HPL_ENA_DLY", 1, WM8903_ANALOGUE_HP_0, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("HPR_RMV_SHORT", 4, WM8903_ANALOGUE_HP_0, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("HPR_ENA_OUTP", 3, WM8903_ANALOGUE_HP_0, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("HPR_ENA_DLY", 1, WM8903_ANALOGUE_HP_0, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTL_RMV_SHORT", 4, WM8903_ANALOGUE_LINEOUT_0, 7, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTL_ENA_OUTP", 3, WM8903_ANALOGUE_LINEOUT_0, 6, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTL_ENA_DLY", 1, WM8903_ANALOGUE_LINEOUT_0, 5, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTR_RMV_SHORT", 4, WM8903_ANALOGUE_LINEOUT_0, 3, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTR_ENA_OUTP", 3, WM8903_ANALOGUE_LINEOUT_0, 2, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTR_ENA_DLY", 1, WM8903_ANALOGUE_LINEOUT_0, 1, 0,
NULL, 0),
SND_SOC_DAPM_PGA_S("HPL_DCS", 3, WM8903_DC_SERVO_0, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("HPR_DCS", 3, WM8903_DC_SERVO_0, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTL_DCS", 3, WM8903_DC_SERVO_0, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("LINEOUTR_DCS", 3, WM8903_DC_SERVO_0, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA("Left Speaker PGA", WM8903_POWER_MANAGEMENT_5, 1, 0,
NULL, 0),
@ -1045,11 +966,30 @@ static const struct snd_soc_dapm_route intercon[] = {
{ "Left Speaker PGA", NULL, "Left Speaker Mixer" },
{ "Right Speaker PGA", NULL, "Right Speaker Mixer" },
{ "HPOUTL", NULL, "Left Headphone Output PGA" },
{ "HPOUTR", NULL, "Right Headphone Output PGA" },
{ "HPL_ENA_DLY", NULL, "Left Headphone Output PGA" },
{ "HPR_ENA_DLY", NULL, "Right Headphone Output PGA" },
{ "LINEOUTL_ENA_DLY", NULL, "Left Line Output PGA" },
{ "LINEOUTR_ENA_DLY", NULL, "Right Line Output PGA" },
{ "LINEOUTL", NULL, "Left Line Output PGA" },
{ "LINEOUTR", NULL, "Right Line Output PGA" },
{ "HPL_DCS", NULL, "HPL_ENA_DLY" },
{ "HPR_DCS", NULL, "HPR_ENA_DLY" },
{ "LINEOUTL_DCS", NULL, "LINEOUTL_ENA_DLY" },
{ "LINEOUTR_DCS", NULL, "LINEOUTR_ENA_DLY" },
{ "HPL_ENA_OUTP", NULL, "HPL_DCS" },
{ "HPR_ENA_OUTP", NULL, "HPR_DCS" },
{ "LINEOUTL_ENA_OUTP", NULL, "LINEOUTL_DCS" },
{ "LINEOUTR_ENA_OUTP", NULL, "LINEOUTR_DCS" },
{ "HPL_RMV_SHORT", NULL, "HPL_ENA_OUTP" },
{ "HPR_RMV_SHORT", NULL, "HPR_ENA_OUTP" },
{ "LINEOUTL_RMV_SHORT", NULL, "LINEOUTL_ENA_OUTP" },
{ "LINEOUTR_RMV_SHORT", NULL, "LINEOUTR_ENA_OUTP" },
{ "HPOUTL", NULL, "HPL_RMV_SHORT" },
{ "HPOUTR", NULL, "HPR_RMV_SHORT" },
{ "LINEOUTL", NULL, "LINEOUTL_RMV_SHORT" },
{ "LINEOUTR", NULL, "LINEOUTR_RMV_SHORT" },
{ "LOP", NULL, "Left Speaker PGA" },
{ "LON", NULL, "Left Speaker PGA" },