[PATCH] ASoC: DAPM: Add support for multi register mux

From: Arun Shamanna Lakshmi
Date: Tue Apr 01 2014 - 02:22:14 EST

Modify soc_enum struct to handle pointers for reg and mask. Add
dapm get and put APIs for multi register mux with one hot encoding.

Signed-off-by: Arun Shamanna Lakshmi <aruns@xxxxxxxxxx>
Signed-off-by: Songhee Baek <sbaek@xxxxxxxxxx>
---
include/sound/soc-dapm.h | 10 ++++
include/sound/soc.h | 22 +++++--
sound/soc/soc-core.c | 12 ++--
sound/soc/soc-dapm.c | 143 +++++++++++++++++++++++++++++++++++++++++-----
4 files changed, 162 insertions(+), 25 deletions(-)

diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index ef78f56..983b0ab 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -305,6 +305,12 @@ struct device;
.get = snd_soc_dapm_get_enum_double, \
.put = snd_soc_dapm_put_enum_double, \
.private_value = (unsigned long)&xenum }
+#define SOC_DAPM_ENUM_WIDE(xname, xenum) \
+{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \
+ .info = snd_soc_info_enum_double, \
+ .get = snd_soc_dapm_get_enum_wide, \
+ .put = snd_soc_dapm_put_enum_wide, \
+ .private_value = (unsigned long)&xenum }
#define SOC_DAPM_ENUM_VIRT(xname, xenum) \
SOC_DAPM_ENUM(xname, xenum)
#define SOC_DAPM_ENUM_EXT(xname, xenum, xget, xput) \
@@ -378,6 +384,10 @@ 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_enum_wide(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol);
+int snd_soc_dapm_put_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,
diff --git a/include/sound/soc.h b/include/sound/soc.h
index 5878410..5c274c4 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -177,18 +177,23 @@
{.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 = &(int){(xreg)}, .shift_l = xshift_l, .shift_r = xshift_r, \
.items = xitems, .texts = xtexts, \
- .mask = xitems ? roundup_pow_of_two(xitems) - 1 : 0}
+ .mask = &(unsigned int){(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_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 = &(int){(xreg)}, .shift_l = xshift_l, .shift_r = xshift_r, \
+ .mask = &(unsigned int){(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_VALUE_ENUM_WIDE(xregs, xmasks, xnum_regs, xitems, xtexts, xvalues) \
+{ .reg = xregs, .mask = xmasks, .num_regs = xnum_regs, \
+ .items = xitems, .texts = xtexts, .values = xvalues, .reg_width = 32 }
#define SOC_ENUM_SINGLE_VIRT(xitems, xtexts) \
SOC_ENUM_SINGLE(SND_SOC_NOPM, 0, xitems, xtexts)
#define SOC_ENUM(xname, xenum) \
@@ -293,6 +298,9 @@
#define SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift_l, xshift_r, xmask, xtexts, xvalues) \
const struct soc_enum name = SOC_VALUE_ENUM_DOUBLE(xreg, xshift_l, xshift_r, xmask, \
ARRAY_SIZE(xtexts), xtexts, xvalues)
+#define SOC_VALUE_ENUM_WIDE_DECL(name, xregs, xmasks, xnum_regs, xtexts, xvalues) \
+ const struct soc_enum name = SOC_VALUE_ENUM_WIDE(xregs, xmasks, xnum_regs, \
+ ARRAY_SIZE(xtexts), xtexts, xvalues)
#define SOC_VALUE_ENUM_SINGLE_DECL(name, xreg, xshift, xmask, xtexts, xvalues) \
SOC_VALUE_ENUM_DOUBLE_DECL(name, xreg, xshift, xshift, xmask, xtexts, xvalues)
#define SOC_ENUM_SINGLE_VIRT_DECL(name, xtexts) \
@@ -1098,13 +1106,15 @@ struct soc_mreg_control {

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

/**
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index cd52d52..aba0094 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;
}
@@ -2636,15 +2636,15 @@ 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);

diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c
index c8a780d..4d2b35c 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
@@ -2903,15 +2903,15 @@ 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;
}
@@ -2945,25 +2945,25 @@ 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.reg = e->reg[0];
update.mask = mask;
update.val = val;
card->update = &update;
@@ -2984,6 +2984,123 @@ int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);

/**
+ * snd_soc_dapm_get_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 registers to set the enumerated items. The enumerated
+ * items are referred as values.
+ * Can be used for handling bit field coded enumeration for example.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_dapm_get_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, val, bit_pos = 0, reg_idx;
+
+ for (reg_idx = 0; reg_idx < e->num_regs; reg_idx++) {
+ reg_val = snd_soc_read(codec, e->reg[reg_idx]);
+ val = reg_val & e->mask[reg_idx];
+ if (val != 0) {
+ bit_pos = ffs(val) + (e->reg_width * reg_idx);
+ break;
+ }
+ }
+
+ ucontrol->value.enumerated.item[0] =
+ snd_soc_enum_val_to_item(e, bit_pos);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_wide);
+
+/**
+ * snd_soc_dapm_put_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 registers to set the enumerated items. The enumerated
+ * items are referred as values.
+ * Can be used for handling bit field coded enumeration for example.
+ *
+ * Returns 0 for success.
+ */
+int snd_soc_dapm_put_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 *item = ucontrol->value.enumerated.item;
+ unsigned int change = 0, reg_idx = 0, value, bit_pos;
+ struct snd_soc_dapm_update update;
+ int ret = 0, reg_val = 0, i;
+
+ if (item[0] >= e->items)
+ return -EINVAL;
+
+ value = snd_soc_enum_item_to_val(e, item[0]);
+
+ if (value) {
+ /* get the register index and value to set */
+ reg_idx = (value - 1) / e->reg_width;
+ bit_pos = (value - 1) % e->reg_width;
+ reg_val = BIT(bit_pos);
+ }
+
+ for (i = 0; i < e->num_regs; i++) {
+ if (i == reg_idx) {
+ change = snd_soc_test_bits(codec, e->reg[i],
+ e->mask[i], reg_val);
+
+ } else {
+ /* accumulate the change to update the DAPM path
+ when none is selected */
+ change += snd_soc_test_bits(codec, e->reg[i],
+ e->mask[i], 0);
+
+ /* clear the register when not selected */
+ snd_soc_write(codec, e->reg[i], 0);
+ }
+ }
+
+ mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
+
+ if (change) {
+ update.kcontrol = kcontrol;
+ update.reg = e->reg[reg_idx];
+ update.mask = e->mask[reg_idx];
+ update.val = reg_val;
+ card->update = &update;
+
+ ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
+
+ card->update = NULL;
+ }
+
+ mutex_unlock(&card->dapm_mutex);
+
+ if (ret > 0)
+ soc_dpcm_runtime_update(card);
+
+ return change;
+}
+EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_wide);
+
+/**
* snd_soc_dapm_info_pin_switch - Info for a pin switch
*
* @kcontrol: mixer control
--
1.7.9.5

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