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ASoC: wm_hubs: Factor out class W management

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Since the analogue portions of the checks for class W are the same over
all the devices factor out these checks into wm_hubs and while we're at
it also use wm_hubs_dac_hp_direct() to enable class W optimisations on
more paths.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-04-26 21:29:29 +01:00
parent af31a227e1
commit c340304dd8
4 changed files with 82 additions and 158 deletions
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84
sound/soc/codecs/wm8993.c
View File

@ -218,7 +218,6 @@ struct wm8993_priv {
unsigned int sysclk_rate;
unsigned int fs;
unsigned int bclk;
int class_w_users;
unsigned int fll_fref;
unsigned int fll_fout;
int fll_src;
@ -824,82 +823,6 @@ static int clk_sys_event(struct snd_soc_dapm_widget *w,
return 0;
}
/*
* When used with DAC outputs only the WM8993 charge pump supports
* operation in class W mode, providing very low power consumption
* when used with digital sources. Enable and disable this mode
* automatically depending on the mixer configuration.
*
* Currently the only supported paths are the direct DAC->headphone
* paths (which provide minimum power consumption anyway).
*/
static int class_w_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
struct snd_soc_codec *codec = widget->codec;
struct wm8993_priv *wm8993 = snd_soc_codec_get_drvdata(codec);
int ret;
/* Turn it off if we're using the main output mixer */
if (ucontrol->value.integer.value[0] == 0) {
if (wm8993->class_w_users == 0) {
dev_dbg(codec->dev, "Disabling Class W\n");
snd_soc_update_bits(codec, WM8993_CLASS_W_0,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V,
0);
}
wm8993->class_w_users++;
}
/* Implement the change */
ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
/* Enable it if we're using the direct DAC path */
if (ucontrol->value.integer.value[0] == 1) {
if (wm8993->class_w_users == 1) {
dev_dbg(codec->dev, "Enabling Class W\n");
snd_soc_update_bits(codec, WM8993_CLASS_W_0,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V,
WM8993_CP_DYN_FREQ |
WM8993_CP_DYN_V);
}
wm8993->class_w_users--;
}
dev_dbg(codec->dev, "Indirect DAC use count now %d\n",
wm8993->class_w_users);
return ret;
}
#define SOC_DAPM_ENUM_W(xname, xenum) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_soc_info_enum_double, \
.get = snd_soc_dapm_get_enum_double, \
.put = class_w_put, \
.private_value = (unsigned long)&xenum }
static const char *hp_mux_text[] = {
"Mixer",
"DAC",
};
static const struct soc_enum hpl_enum =
SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text);
static const struct snd_kcontrol_new hpl_mux =
SOC_DAPM_ENUM_W("Left Headphone Mux", hpl_enum);
static const struct soc_enum hpr_enum =
SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text);
static const struct snd_kcontrol_new hpr_mux =
SOC_DAPM_ENUM_W("Right Headphone Mux", hpr_enum);
static const struct snd_kcontrol_new left_speaker_mixer[] = {
SOC_DAPM_SINGLE("Input Switch", WM8993_SPEAKER_MIXER, 7, 1, 0),
SOC_DAPM_SINGLE("IN1LP Switch", WM8993_SPEAKER_MIXER, 5, 1, 0),
@ -986,8 +909,8 @@ SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &sidetoner_mux),
SND_SOC_DAPM_DAC("DACL", NULL, WM8993_POWER_MANAGEMENT_3, 1, 0),
SND_SOC_DAPM_DAC("DACR", NULL, WM8993_POWER_MANAGEMENT_3, 0, 0),
SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &wm_hubs_hpl_mux),
SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &wm_hubs_hpr_mux),
SND_SOC_DAPM_MIXER("SPKL", WM8993_POWER_MANAGEMENT_3, 8, 0,
left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
@ -1577,9 +1500,6 @@ static int wm8993_probe(struct snd_soc_codec *codec)
return ret;
}
/* By default we're using the output mixers */
wm8993->class_w_users = 2;
/* Latch volume update bits and default ZC on */
snd_soc_update_bits(codec, WM8993_RIGHT_DAC_DIGITAL_VOLUME,
WM8993_DAC_VU, WM8993_DAC_VU);

91
sound/soc/codecs/wm8994.c
View File

@ -945,27 +945,12 @@ static int vmid_event(struct snd_soc_dapm_widget *w,
return 0;
}
static void wm8994_update_class_w(struct snd_soc_codec *codec)
static bool wm8994_check_class_w_digital(struct snd_soc_codec *codec)
{
struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec);
int enable = 1;
int source = 0; /* GCC flow analysis can't track enable */
int reg, reg_r;
/* Only support direct DAC->headphone paths */
reg = snd_soc_read(codec, WM8994_OUTPUT_MIXER_1);
if (!(reg & WM8994_DAC1L_TO_HPOUT1L)) {
dev_vdbg(codec->dev, "HPL connected to output mixer\n");
enable = 0;
}
reg = snd_soc_read(codec, WM8994_OUTPUT_MIXER_2);
if (!(reg & WM8994_DAC1R_TO_HPOUT1R)) {
dev_vdbg(codec->dev, "HPR connected to output mixer\n");
enable = 0;
}
/* We also need the same setting for L/R and only one path */
/* We also need the same AIF source for L/R and only one path */
reg = snd_soc_read(codec, WM8994_DAC1_LEFT_MIXER_ROUTING);
switch (reg) {
case WM8994_AIF2DACL_TO_DAC1L:
@ -982,28 +967,20 @@ static void wm8994_update_class_w(struct snd_soc_codec *codec)
break;
default:
dev_vdbg(codec->dev, "DAC mixer setting: %x\n", reg);
enable = 0;
break;
return false;
}
reg_r = snd_soc_read(codec, WM8994_DAC1_RIGHT_MIXER_ROUTING);
if (reg_r != reg) {
dev_vdbg(codec->dev, "Left and right DAC mixers different\n");
enable = 0;
return false;
}
if (enable) {
dev_dbg(codec->dev, "Class W enabled\n");
snd_soc_update_bits(codec, WM8994_CLASS_W_1,
WM8994_CP_DYN_PWR |
WM8994_CP_DYN_SRC_SEL_MASK,
source | WM8994_CP_DYN_PWR);
/* Set the source up */
snd_soc_update_bits(codec, WM8994_CLASS_W_1,
WM8994_CP_DYN_SRC_SEL_MASK, source);
} else {
dev_dbg(codec->dev, "Class W disabled\n");
snd_soc_update_bits(codec, WM8994_CLASS_W_1,
WM8994_CP_DYN_PWR, 0);
}
return true;
}
static int late_enable_ev(struct snd_soc_dapm_widget *w,
@ -1120,45 +1097,6 @@ static int dac_ev(struct snd_soc_dapm_widget *w,
return 0;
}
static const char *hp_mux_text[] = {
"Mixer",
"DAC",
};
#define WM8994_HP_ENUM(xname, xenum) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_soc_info_enum_double, \
.get = snd_soc_dapm_get_enum_double, \
.put = wm8994_put_hp_enum, \
.private_value = (unsigned long)&xenum }
static int wm8994_put_hp_enum(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_widget *w = wlist->widgets[0];
struct snd_soc_codec *codec = w->codec;
int ret;
ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
wm8994_update_class_w(codec);
return ret;
}
static const struct soc_enum hpl_enum =
SOC_ENUM_SINGLE(WM8994_OUTPUT_MIXER_1, 8, 2, hp_mux_text);
static const struct snd_kcontrol_new hpl_mux =
WM8994_HP_ENUM("Left Headphone Mux", hpl_enum);
static const struct soc_enum hpr_enum =
SOC_ENUM_SINGLE(WM8994_OUTPUT_MIXER_2, 8, 2, hp_mux_text);
static const struct snd_kcontrol_new hpr_mux =
WM8994_HP_ENUM("Right Headphone Mux", hpr_enum);
static const char *adc_mux_text[] = {
"ADC",
"DMIC",
@ -1270,7 +1208,7 @@ static int wm8994_put_class_w(struct snd_kcontrol *kcontrol,
ret = snd_soc_dapm_put_volsw(kcontrol, ucontrol);
wm8994_update_class_w(codec);
wm_hubs_update_class_w(codec);
return ret;
}
@ -1413,9 +1351,9 @@ SND_SOC_DAPM_MIXER_E("SPKL", WM8994_POWER_MANAGEMENT_3, 8, 0,
SND_SOC_DAPM_MIXER_E("SPKR", WM8994_POWER_MANAGEMENT_3, 9, 0,
right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer),
late_enable_ev, SND_SOC_DAPM_PRE_PMU),
SND_SOC_DAPM_MUX_E("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux,
SND_SOC_DAPM_MUX_E("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &wm_hubs_hpl_mux,
late_enable_ev, SND_SOC_DAPM_PRE_PMU),
SND_SOC_DAPM_MUX_E("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux,
SND_SOC_DAPM_MUX_E("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &wm_hubs_hpr_mux,
late_enable_ev, SND_SOC_DAPM_PRE_PMU),
SND_SOC_DAPM_POST("Late Disable PGA", late_disable_ev)
@ -1429,8 +1367,8 @@ SND_SOC_DAPM_MIXER("SPKL", WM8994_POWER_MANAGEMENT_3, 8, 0,
left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)),
SND_SOC_DAPM_MIXER("SPKR", WM8994_POWER_MANAGEMENT_3, 9, 0,
right_speaker_mixer, ARRAY_SIZE(right_speaker_mixer)),
SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &hpl_mux),
SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &hpr_mux),
SND_SOC_DAPM_MUX("Left Headphone Mux", SND_SOC_NOPM, 0, 0, &wm_hubs_hpl_mux),
SND_SOC_DAPM_MUX("Right Headphone Mux", SND_SOC_NOPM, 0, 0, &wm_hubs_hpr_mux),
};
static const struct snd_soc_dapm_widget wm8994_dac_revd_widgets[] = {
@ -3829,7 +3767,8 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
break;
}
wm8994_update_class_w(codec);
wm8994->hubs.check_class_w_digital = wm8994_check_class_w_digital;
wm_hubs_update_class_w(codec);
wm8994_handle_pdata(wm8994);

59
sound/soc/codecs/wm_hubs.c
View File

@ -566,6 +566,65 @@ static int lineout_event(struct snd_soc_dapm_widget *w,
return 0;
}
void wm_hubs_update_class_w(struct snd_soc_codec *codec)
{
struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec);
int enable = WM8993_CP_DYN_V | WM8993_CP_DYN_FREQ;
if (!wm_hubs_dac_hp_direct(codec))
enable = false;
if (hubs->check_class_w_digital && !hubs->check_class_w_digital(codec))
enable = false;
dev_vdbg(codec->dev, "Class W %s\n", enable ? "enabled" : "disabled");
snd_soc_update_bits(codec, WM8993_CLASS_W_0,
WM8993_CP_DYN_V | WM8993_CP_DYN_FREQ, enable);
}
EXPORT_SYMBOL_GPL(wm_hubs_update_class_w);
#define WM_HUBS_ENUM_W(xname, xenum) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
.info = snd_soc_info_enum_double, \
.get = snd_soc_dapm_get_enum_double, \
.put = class_w_put, \
.private_value = (unsigned long)&xenum }
static int class_w_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_widget *widget = wlist->widgets[0];
struct snd_soc_codec *codec = widget->codec;
int ret;
ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
wm_hubs_update_class_w(codec);
return ret;
}
static const char *hp_mux_text[] = {
"Mixer",
"DAC",
};
static const struct soc_enum hpl_enum =
SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER1, 8, 2, hp_mux_text);
const struct snd_kcontrol_new wm_hubs_hpl_mux =
WM_HUBS_ENUM_W("Left Headphone Mux", hpl_enum);
EXPORT_SYMBOL_GPL(wm_hubs_hpl_mux);
static const struct soc_enum hpr_enum =
SOC_ENUM_SINGLE(WM8993_OUTPUT_MIXER2, 8, 2, hp_mux_text);
const struct snd_kcontrol_new wm_hubs_hpr_mux =
WM_HUBS_ENUM_W("Right Headphone Mux", hpr_enum);
EXPORT_SYMBOL_GPL(wm_hubs_hpr_mux);
static const struct snd_kcontrol_new in1l_pga[] = {
SOC_DAPM_SINGLE("IN1LP Switch", WM8993_INPUT_MIXER2, 5, 1, 0),
SOC_DAPM_SINGLE("IN1LN Switch", WM8993_INPUT_MIXER2, 4, 1, 0),

6
sound/soc/codecs/wm_hubs.h
View File

@ -16,6 +16,7 @@
#include <linux/completion.h>
#include <linux/interrupt.h>
#include <sound/control.h>
struct snd_soc_codec;
@ -32,6 +33,7 @@ struct wm_hubs_data {
bool no_cache_dac_hp_direct;
u16 dac_hp_direct_dcs;
bool (*check_class_w_digital)(struct snd_soc_codec *);
bool lineout1_se;
bool lineout1n_ena;
@ -57,5 +59,9 @@ extern irqreturn_t wm_hubs_dcs_done(int irq, void *data);
extern void wm_hubs_vmid_ena(struct snd_soc_codec *codec);
extern void wm_hubs_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level);
extern void wm_hubs_update_class_w(struct snd_soc_codec *codec);
extern const struct snd_kcontrol_new wm_hubs_hpl_mux;
extern const struct snd_kcontrol_new wm_hubs_hpr_mux;
#endif