mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-19 17:11:03 +00:00
Code Issues Releases Wiki Activity

ASoC: Use DAPM supply widget for WM8903 charge pump

Browse source 
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2009-04-22 18:39:39 +01:00
parent 246d0a17f5
commit 42768a1282
1 changed files with 20 additions and 33 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
sound/soc/codecs/wm8903.c
View file

@ -217,7 +217,6 @@ struct wm8903_priv {
int sysclk;
/* Reference counts */
int charge_pump_users;
int class_w_users;
int playback_active;
int capture_active;
@ -373,6 +372,15 @@ static void wm8903_reset(struct snd_soc_codec *codec)
#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)
{
WARN_ON(event != SND_SOC_DAPM_POST_PMU);
mdelay(4);
return 0;
}
/*
* Event for headphone and line out amplifier power changes. Special
* power up/down sequences are required in order to maximise pop/click
@ -382,12 +390,9 @@ static int wm8903_output_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = w->codec;
struct wm8903_priv *wm8903 = codec->private_data;
struct i2c_client *i2c = codec->control_data;
u16 val;
u16 reg;
int shift;
u16 cp_reg = wm8903_read(codec, WM8903_CHARGE_PUMP_0);
switch (w->reg) {
case WM8903_POWER_MANAGEMENT_2:
@ -419,18 +424,6 @@ static int wm8903_output_event(struct snd_soc_dapm_widget *w,
/* Short the output */
val &= ~(WM8903_OUTPUT_SHORT << shift);
wm8903_write(codec, reg, val);
wm8903->charge_pump_users++;
dev_dbg(&i2c->dev, "Charge pump use count now %d\n",
wm8903->charge_pump_users);
if (wm8903->charge_pump_users == 1) {
dev_dbg(&i2c->dev, "Enabling charge pump\n");
wm8903_write(codec, WM8903_CHARGE_PUMP_0,
cp_reg | WM8903_CP_ENA);
mdelay(4);
}
}
if (event & SND_SOC_DAPM_POST_PMU) {
@ -464,19 +457,6 @@ static int wm8903_output_event(struct snd_soc_dapm_widget *w,
wm8903_write(codec, reg, val);
}
if (event & SND_SOC_DAPM_POST_PMD) {
wm8903->charge_pump_users--;
dev_dbg(&i2c->dev, "Charge pump use count now %d\n",
wm8903->charge_pump_users);
if (wm8903->charge_pump_users == 0) {
dev_dbg(&i2c->dev, "Disabling charge pump\n");
wm8903_write(codec, WM8903_CHARGE_PUMP_0,
cp_reg & ~WM8903_CP_ENA);
}
}
return 0;
}
@ -844,26 +824,28 @@ SND_SOC_DAPM_MIXER("Right Speaker Mixer", WM8903_POWER_MANAGEMENT_4, 0, 0,
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_POST_PMD),
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_POST_PMD),
SND_SOC_DAPM_PRE_PMD),
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_POST_PMD),
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_POST_PMD),
SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA("Left Speaker PGA", WM8903_POWER_MANAGEMENT_5, 1, 0,
NULL, 0),
SND_SOC_DAPM_PGA("Right Speaker PGA", WM8903_POWER_MANAGEMENT_5, 0, 0,
NULL, 0),
SND_SOC_DAPM_SUPPLY("Charge Pump", WM8903_CHARGE_PUMP_0, 0, 0,
wm8903_cp_event, SND_SOC_DAPM_POST_PMU),
};
static const struct snd_soc_dapm_route intercon[] = {
@ -951,6 +933,11 @@ static const struct snd_soc_dapm_route intercon[] = {
{ "ROP", NULL, "Right Speaker PGA" },
{ "RON", NULL, "Right Speaker PGA" },
{ "Left Headphone Output PGA", NULL, "Charge Pump" },
{ "Right Headphone Output PGA", NULL, "Charge Pump" },
{ "Left Line Output PGA", NULL, "Charge Pump" },
{ "Right Line Output PGA", NULL, "Charge Pump" },
};
static int wm8903_add_widgets(struct snd_soc_codec *codec)