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Subject[PATCH] ASoC: Add support for multi register mux
Date
If the mux uses 1 bit position per input, and requires to set one
single bit at a time, then an N bit register can support up to N
inputs. In more recent Tegra chips, we have at least greater than
64 inputs which requires at least 2 .reg fields in struct soc_enum.

Signed-off-by: Arun Shamanna Lakshmi <aruns@nvidia.com>
Signed-off-by: Songhee Baek <sbaek@nvidia.com>
---
include/sound/soc-dapm.h | 20 +++++-
include/sound/soc.h | 44 ++++++++++---
sound/soc/soc-core.c | 118 +++++++++++++++++++++++++++++++++--
sound/soc/soc-dapm.c | 155 +++++++++++++++++++++++++++++++++++++++-------
4 files changed, 300 insertions(+), 37 deletions(-)

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index ef78f56..324de75 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -315,6 +315,12 @@ struct device;
.private_value = (unsigned long)&xenum }
#define SOC_DAPM_VALUE_ENUM(xname, xenum) \
SOC_DAPM_ENUM(xname, xenum)
+#define SOC_DAPM_VALUE_ENUM_WIDE(xname, xenum) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_enum_wide, \
+ .get = snd_soc_dapm_get_value_enum_wide, \
+ .put = snd_soc_dapm_put_value_enum_wide, \
+ .private_value = (unsigned long)&xenum }
#define SOC_DAPM_PIN_SWITCH(xname) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname " Switch", \
.info = snd_soc_dapm_info_pin_switch, \
@@ -352,6 +358,9 @@ struct device;
/* regulator widget flags */
#define SND_SOC_DAPM_REGULATOR_BYPASS 0x1 /* bypass when disabled */

+/* maximum number of registers to update */
+#define SOC_DAPM_UPDATE_MAX_REGS 3
+
struct snd_soc_dapm_widget;
enum snd_soc_dapm_type;
struct snd_soc_dapm_path;
@@ -378,6 +387,10 @@ int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
+int snd_soc_dapm_get_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_dapm_put_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
@@ -590,9 +603,10 @@ struct snd_soc_dapm_widget {

struct snd_soc_dapm_update {
struct snd_kcontrol *kcontrol;
- int reg;
- int mask;
- int val;
+ int reg[SOC_DAPM_UPDATE_MAX_REGS];
+ int mask[SOC_DAPM_UPDATE_MAX_REGS];
+ int val[SOC_DAPM_UPDATE_MAX_REGS];
+ int num_regs;
};

/* DAPM context */
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 0b83168..67097c6 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -177,16 +177,22 @@
{.reg = xreg, .min = xmin, .max = xmax, \
.platform_max = xmax} }
#define SOC_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xitems, xtexts) \
-{ .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
+{ .reg[0] = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
.items = xitems, .texts = xtexts, \
- .mask = xitems ? roundup_pow_of_two(xitems) - 1 : 0}
+ .mask[0] = xitems ? roundup_pow_of_two(xitems) - 1 : 0, .num_regs = 1 }
#define SOC_ENUM_SINGLE(xreg, xshift, xitems, xtexts) \
SOC_ENUM_DOUBLE(xreg, xshift, xshift, xitems, xtexts)
#define SOC_ENUM_SINGLE_EXT(xitems, xtexts) \
{ .items = xitems, .texts = xtexts }
+#define SOC_VALUE_ENUM_TRIPLE(reg1, reg2, reg3, mask1, mask2, mask3, \
+ nreg, nmax, xtexts, xvalues) \
+{ .reg[0] = reg1, .reg[1] = reg2, .reg[2] = reg3, \
+ .mask[0] = mask1, .mask[1] = mask2, .mask[2] = mask3, \
+ .num_regs = nreg, .items = nmax, .texts = xtexts, .values = xvalues }
#define SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, xitems, xtexts, xvalues) \
-{ .reg = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
- .mask = xmask, .items = xitems, .texts = xtexts, .values = xvalues}
+{ .reg[0] = xreg, .shift_l = xshift_l, .shift_r = xshift_r, \
+ .mask[0] = xmask, .items = xitems, .texts = xtexts, .values = xvalues,\
+ .num_regs = 1 }
#define SOC_VALUE_ENUM_SINGLE(xreg, xshift, xmask, xnitmes, xtexts, xvalues) \
SOC_VALUE_ENUM_DOUBLE(xreg, xshift, xshift, xmask, xnitmes, xtexts, xvalues)
#define SOC_ENUM_SINGLE_VIRT(xitems, xtexts) \
@@ -198,6 +204,12 @@
.private_value = (unsigned long)&xenum }
#define SOC_VALUE_ENUM(xname, xenum) \
SOC_ENUM(xname, xenum)
+#define SOC_VALUE_ENUM_WIDE(xname, xenum) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname,\
+ .info = snd_soc_info_enum_wide, \
+ .get = snd_soc_get_value_enum_wide, \
+ .put = snd_soc_put_value_enum_wide, \
+ .private_value = (unsigned long)&xenum }
#define SOC_SINGLE_EXT(xname, xreg, xshift, xmax, xinvert,\
xhandler_get, xhandler_put) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
@@ -297,7 +309,13 @@
SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
#define SOC_ENUM_SINGLE_VIRT_DECL(name, xtexts) \
const struct soc_enum name = SOC_ENUM_SINGLE_VIRT(ARRAY_SIZE(xtexts), xtexts)
-
+#define SOC_VALUE_ENUM_TRIPLE_DECL(name, reg1, reg2, reg3, \
+ mask1, mask2, mask3, \
+ xtexts, xvalues) \
+ const struct soc_enum name = SOC_VALUE_ENUM_TRIPLE(reg1, reg2, reg3, \
+ mask1, mask2, mask3, 3, \
+ ARRAY_SIZE(xtexts), \
+ xtexts, xvalues)
/*
* Component probe and remove ordering levels for components with runtime
* dependencies.
@@ -309,6 +327,11 @@
#define SND_SOC_COMP_ORDER_LAST 2

/*
+ * The maximum number of registers in soc_enum
+ */
+#define SOC_ENUM_MAX_REGS 3
+
+/*
* Bias levels
*
* @ON: Bias is fully on for audio playback and capture operations.
@@ -507,6 +530,12 @@ int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
+int snd_soc_info_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo);
+int snd_soc_get_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_put_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo);
#define snd_soc_info_bool_ext snd_ctl_boolean_mono_info
@@ -1098,13 +1127,14 @@ struct soc_mreg_control {

/* enumerated kcontrol */
struct soc_enum {
- int reg;
+ int reg[SOC_ENUM_MAX_REGS];
unsigned char shift_l;
unsigned char shift_r;
unsigned int items;
- unsigned int mask;
+ unsigned int mask[SOC_ENUM_MAX_REGS];
const char * const *texts;
const unsigned int *values;
+ unsigned int num_regs;
};

/**
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index caebd63..e47479d 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -2601,12 +2601,12 @@ int snd_soc_get_enum_double(struct snd_kcontrol *kcontrol,
unsigned int val, item;
unsigned int reg_val;

- reg_val = snd_soc_read(codec, e->reg);
- val = (reg_val >> e->shift_l) & e->mask;
+ reg_val = snd_soc_read(codec, e->reg[0]);
+ val = (reg_val >> e->shift_l) & e->mask[0];
item = snd_soc_enum_val_to_item(e, val);
ucontrol->value.enumerated.item[0] = item;
if (e->shift_l != e->shift_r) {
- val = (reg_val >> e->shift_l) & e->mask;
+ val = (reg_val >> e->shift_l) & e->mask[0];
item = snd_soc_enum_val_to_item(e, val);
ucontrol->value.enumerated.item[1] = item;
}
@@ -2636,19 +2636,125 @@ int snd_soc_put_enum_double(struct snd_kcontrol *kcontrol,
if (item[0] >= e->items)
return -EINVAL;
val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
- mask = e->mask << e->shift_l;
+ mask = e->mask[0] << e->shift_l;
if (e->shift_l != e->shift_r) {
if (item[1] >= e->items)
return -EINVAL;
val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
- mask |= e->mask << e->shift_r;
+ mask |= e->mask[0] << e->shift_r;
}

- return snd_soc_update_bits_locked(codec, e->reg, mask, val);
+ return snd_soc_update_bits_locked(codec, e->reg[0], mask, val);
}
EXPORT_SYMBOL_GPL(snd_soc_put_enum_double);

/**
+ * snd_soc_info_enum_wide - enumerated mulitple register mixer info callback
+ * @kcontrol: mixer control
+ * @uinfo: control element information
+ *
+ * Callback to provide information about a enumerated multiple register
+ * mixer control.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_info_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
+ uinfo->count = 1;
+ uinfo->value.enumerated.items = e->items;
+
+ if (uinfo->value.enumerated.item > e->items - 1)
+ uinfo->value.enumerated.item = e->items - 1;
+ strcpy(uinfo->value.enumerated.name,
+ e->texts[uinfo->value.enumerated.item]);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_info_enum_wide);
+
+/**
+ * snd_soc_get_value_enum_wide - semi enumerated multiple registers mixer
+ * get callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to get the value of a semi enumerated mutiple registers mixer.
+ *
+ * Mutiple semi enumerated mixer: the mixer has multiple registers to set the
+ * values. The enumerated items are referred as values. Can be
+ * used for handling bitfield coded enumeration for example.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_get_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int val, i, reg_idx;
+ bool match = true;
+
+ for (i = 0; i < e->items; i++) {
+ match = true;
+ for (reg_idx = 0; reg_idx < e->num_regs; reg_idx++) {
+ val = snd_soc_read(codec, e->reg[reg_idx]);
+ if (val != e->values[i * e->num_regs + reg_idx]) {
+ match = false;
+ break;
+ }
+ }
+ if (match)
+ break;
+ }
+ if (!match) {
+ dev_err(codec->dev, "ASoC: Failed to find matched enum value\n");
+ return -EINVAL;
+ } else
+ ucontrol->value.enumerated.item[0] = i;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_get_value_enum_wide);
+
+/**
+ * snd_soc_get_value_enum_wide - semi enumerated multiple mixer put callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to put the value of a multiple semi enumerated mixer.
+ *
+ * Mutiple semi enumerated mixer: the mixer has multiple registers to set the
+ * values. The enumerated items are referred as values. Can be
+ * used for handling bitfield coded enumeration for example.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_put_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int val, reg_idx, item;
+ int ret;
+
+ if (ucontrol->value.enumerated.item[0] > e->items - 1)
+ return -EINVAL;
+ item = ucontrol->value.enumerated.item[0];
+ for (reg_idx = 0; reg_idx < e->num_regs; reg_idx++) {
+ val = e->values[item * e->num_regs + reg_idx];
+ ret = snd_soc_update_bits_locked(codec, e->reg[reg_idx],
+ e->mask[reg_idx], val);
+ if (ret)
+ return ret;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_wide);
+
+/**
* snd_soc_read_signed - Read a codec register and interprete as signed value
* @codec: codec
* @reg: Register to read
diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index c8a780d..22ca178 100644
--- a/sound/soc/soc-dapm.c
+++ b/sound/soc/soc-dapm.c
@@ -514,9 +514,9 @@ static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
unsigned int val, item;
int i;

- if (e->reg != SND_SOC_NOPM) {
- soc_widget_read(dest, e->reg, &val);
- val = (val >> e->shift_l) & e->mask;
+ if (e->reg[0] != SND_SOC_NOPM) {
+ soc_widget_read(dest, e->reg[0], &val);
+ val = (val >> e->shift_l) & e->mask[0];
item = snd_soc_enum_val_to_item(e, val);
} else {
/* since a virtual mux has no backing registers to
@@ -1553,7 +1553,7 @@ static void dapm_widget_update(struct snd_soc_card *card)
struct snd_soc_dapm_update *update = card->update;
struct snd_soc_dapm_widget_list *wlist;
struct snd_soc_dapm_widget *w = NULL;
- unsigned int wi;
+ unsigned int wi, update_idx;
int ret;

if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
@@ -1575,8 +1575,10 @@ static void dapm_widget_update(struct snd_soc_card *card)
if (!w)
return;

- ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
- update->val);
+ for (update_idx = 0; update_idx < update->num_regs; update_idx++)
+ ret = soc_widget_update_bits_locked(w, update->reg[update_idx],
+ update->mask[update_idx],
+ update->val[update_idx]);
if (ret < 0)
dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
w->name, ret);
@@ -2866,9 +2868,10 @@ int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
if (change) {
if (reg != SND_SOC_NOPM) {
update.kcontrol = kcontrol;
- update.reg = reg;
- update.mask = mask;
- update.val = val;
+ update.reg[0] = reg;
+ update.mask[0] = mask;
+ update.val[0] = val;
+ update.num_regs = 1;

card->update = &update;
}
@@ -2903,15 +2906,15 @@ int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
unsigned int reg_val, val;

- if (e->reg != SND_SOC_NOPM)
- reg_val = snd_soc_read(codec, e->reg);
+ if (e->reg[0] != SND_SOC_NOPM)
+ reg_val = snd_soc_read(codec, e->reg[0]);
else
reg_val = dapm_kcontrol_get_value(kcontrol);

- val = (reg_val >> e->shift_l) & e->mask;
+ val = (reg_val >> e->shift_l) & e->mask[0];
ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
if (e->shift_l != e->shift_r) {
- val = (reg_val >> e->shift_r) & e->mask;
+ val = (reg_val >> e->shift_r) & e->mask[0];
val = snd_soc_enum_val_to_item(e, val);
ucontrol->value.enumerated.item[1] = val;
}
@@ -2945,27 +2948,28 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
return -EINVAL;

val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
- mask = e->mask << e->shift_l;
+ mask = e->mask[0] << e->shift_l;
if (e->shift_l != e->shift_r) {
if (item[1] > e->items)
return -EINVAL;
val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
- mask |= e->mask << e->shift_r;
+ mask |= e->mask[0] << e->shift_r;
}

mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);

- if (e->reg != SND_SOC_NOPM)
- change = snd_soc_test_bits(codec, e->reg, mask, val);
+ if (e->reg[0] != SND_SOC_NOPM)
+ change = snd_soc_test_bits(codec, e->reg[0], mask, val);
else
change = dapm_kcontrol_set_value(kcontrol, val);

if (change) {
- if (e->reg != SND_SOC_NOPM) {
+ if (e->reg[0] != SND_SOC_NOPM) {
update.kcontrol = kcontrol;
- update.reg = e->reg;
- update.mask = mask;
- update.val = val;
+ update.reg[0] = e->reg[0];
+ update.mask[0] = mask;
+ update.val[0] = val;
+ update.num_regs = 1;
card->update = &update;
}

@@ -2984,6 +2988,115 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);

/**
+ * snd_soc_dapm_get_value_enum_wide - dapm semi enumerated multiple registers
+ * mixer get callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to get the value of a dapm semi enumerated multiple register mixer
+ * control.
+ *
+ * semi enumerated multiple registers mixer:
+ * the mixer has multiple regsters to set the enumerated items. The enumerated
+ * iteams are referred as values.
+ * Can be used for handling bitfield coded enumeration for example.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_dapm_get_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int reg_val, i, reg_idx;
+ bool match = true;
+
+ for (i = 0; i < e->items; i++) {
+ match = true;
+ for (reg_idx = 0; reg_idx < e->num_regs; reg_idx++) {
+ reg_val = snd_soc_read(codec, e->reg[reg_idx]);
+ if (reg_val != e->values[i * e->num_regs + reg_idx]) {
+ match = false;
+ break;
+ }
+ }
+ if (match)
+ break;
+ }
+ if (!match) {
+ dev_err(codec->dev, "ASoC: Failed to find matched enum value\n");
+ return -EINVAL;
+ } else
+ ucontrol->value.enumerated.item[0] = i;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_wide);
+
+/**
+ * snd_soc_dapm_put_value_enum_wide - dapm semi enumerated multiple registers
+ * mixer put callback
+ * @kcontrol: mixer control
+ * @ucontrol: control element information
+ *
+ * Callback to put the value of a dapm semi enumerated multiple register mixer
+ * control.
+ *
+ * semi enumerated multiple registers mixer:
+ * the mixer has multiple regsters to set the enumerated items. The enumerated
+ * iteams are referred as values.
+ * Can be used for handling bitfield coded enumeration for example.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_dapm_put_value_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
+ struct snd_soc_card *card = codec->card;
+ struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
+ unsigned int value, item, old, reg_idx;
+ struct snd_soc_dapm_update update;
+ int wi, update_idx;
+ int ret = 0;
+
+ if (ucontrol->value.enumerated.item[0] > e->items - 1)
+ return -EINVAL;
+
+ item = ucontrol->value.enumerated.item[0];
+
+ mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+ for (reg_idx = 0, update_idx = 0; reg_idx < e->num_regs; reg_idx++) {
+ value = e->values[item * e->num_regs + reg_idx];
+ old = snd_soc_read(codec, e->reg[reg_idx]);
+ if (value != old) {
+ update.reg[update_idx] = e->reg[reg_idx];
+ update.mask[update_idx] = e->mask[reg_idx];
+ update.val[update_idx] = value;
+ update.num_regs = ++update_idx;
+ }
+ }
+
+ if (update_idx) {
+ update.kcontrol = kcontrol;
+ card->update = &update;
+
+ ret = soc_dapm_mux_update_power(card, kcontrol, item, e);
+
+ card->update = NULL;
+ }
+
+ mutex_unlock(&card->dapm_mutex);
+
+ if (ret > 0)
+ soc_dpcm_runtime_update(card);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_wide);
+
+/**
* snd_soc_dapm_info_pin_switch - Info for a pin switch
*
* @kcontrol: mixer control
--
1.7.9.5


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