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Merge branch 'topic/sign' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into asoc-tlv320aic32x4

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This commit is contained in:
Mark Brown 2014-02-03 12:46:54 +00:00
commit 80e9c19c02
2 changed files with 76 additions and 7 deletions
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15
include/sound/soc.h
View File

@ -45,6 +45,11 @@
((unsigned long)&(struct soc_mixer_control) \
{.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
.max = xmax, .platform_max = xmax, .invert = xinvert})
#define SOC_DOUBLE_R_S_VALUE(xlreg, xrreg, xshift, xmin, xmax, xsign_bit, xinvert) \
((unsigned long)&(struct soc_mixer_control) \
{.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
.max = xmax, .min = xmin, .platform_max = xmax, .sign_bit = xsign_bit, \
.invert = xinvert})
#define SOC_DOUBLE_R_RANGE_VALUE(xlreg, xrreg, xshift, xmin, xmax, xinvert) \
((unsigned long)&(struct soc_mixer_control) \
{.reg = xlreg, .rreg = xrreg, .shift = xshift, .rshift = xshift, \
@ -152,6 +157,15 @@
{.reg = xreg, .rreg = xrreg, \
.shift = xshift, .rshift = xshift, \
.max = xmax, .min = xmin} }
#define SOC_DOUBLE_R_S_TLV(xname, reg_left, reg_right, xshift, xmin, xmax, xsign_bit, xinvert, tlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname),\
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\
SNDRV_CTL_ELEM_ACCESS_READWRITE,\
.tlv.p = (tlv_array), \
.info = snd_soc_info_volsw, \
.get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
.private_value = SOC_DOUBLE_R_S_VALUE(reg_left, reg_right, xshift, \
xmin, xmax, xsign_bit, xinvert) }
#define SOC_DOUBLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
@ -1067,6 +1081,7 @@ struct soc_mixer_control {
int min, max, platform_max;
int reg, rreg;
unsigned int shift, rshift;
unsigned int sign_bit;
unsigned int invert:1;
unsigned int autodisable:1;
};

68
sound/soc/soc-core.c
View File

@ -2715,6 +2715,48 @@ int snd_soc_put_value_enum_double(struct snd_kcontrol *kcontrol,
}
EXPORT_SYMBOL_GPL(snd_soc_put_value_enum_double);
/**
* snd_soc_read_signed - Read a codec register and interprete as signed value
* @codec: codec
* @reg: Register to read
* @mask: Mask to use after shifting the register value
* @shift: Right shift of register value
* @sign_bit: Bit that describes if a number is negative or not.
*
* This functions reads a codec register. The register value is shifted right
* by 'shift' bits and masked with the given 'mask'. Afterwards it translates
* the given registervalue into a signed integer if sign_bit is non-zero.
*
* Returns the register value as signed int.
*/
static int snd_soc_read_signed(struct snd_soc_codec *codec, unsigned int reg,
unsigned int mask, unsigned int shift, unsigned int sign_bit)
{
int ret;
unsigned int val;
val = (snd_soc_read(codec, reg) >> shift) & mask;
if (!sign_bit)
return val;
/* non-negative number */
if (!(val & BIT(sign_bit)))
return val;
ret = val;
/*
* The register most probably does not contain a full-sized int.
* Instead we have an arbitrary number of bits in a signed
* representation which has to be translated into a full-sized int.
* This is done by filling up all bits above the sign-bit.
*/
ret |= ~((int)(BIT(sign_bit) - 1));
return ret;
}
/**
* snd_soc_info_volsw - single mixer info callback
* @kcontrol: mixer control
@ -2743,7 +2785,7 @@ int snd_soc_info_volsw(struct snd_kcontrol *kcontrol,
uinfo->count = snd_soc_volsw_is_stereo(mc) ? 2 : 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = platform_max;
uinfo->value.integer.max = platform_max - mc->min;
return 0;
}
EXPORT_SYMBOL_GPL(snd_soc_info_volsw);
@ -2769,11 +2811,16 @@ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
unsigned int shift = mc->shift;
unsigned int rshift = mc->rshift;
int max = mc->max;
int min = mc->min;
int sign_bit = mc->sign_bit;
unsigned int mask = (1 << fls(max)) - 1;
unsigned int invert = mc->invert;
ucontrol->value.integer.value[0] =
(snd_soc_read(codec, reg) >> shift) & mask;
if (sign_bit)
mask = BIT(sign_bit + 1) - 1;
ucontrol->value.integer.value[0] = snd_soc_read_signed(codec, reg, mask,
shift, sign_bit) - min;
if (invert)
ucontrol->value.integer.value[0] =
max - ucontrol->value.integer.value[0];
@ -2781,10 +2828,12 @@ int snd_soc_get_volsw(struct snd_kcontrol *kcontrol,
if (snd_soc_volsw_is_stereo(mc)) {
if (reg == reg2)
ucontrol->value.integer.value[1] =
(snd_soc_read(codec, reg) >> rshift) & mask;
snd_soc_read_signed(codec, reg, mask, rshift,
sign_bit) - min;
else
ucontrol->value.integer.value[1] =
(snd_soc_read(codec, reg2) >> shift) & mask;
snd_soc_read_signed(codec, reg2, mask, shift,
sign_bit) - min;
if (invert)
ucontrol->value.integer.value[1] =
max - ucontrol->value.integer.value[1];
@ -2815,6 +2864,8 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
unsigned int shift = mc->shift;
unsigned int rshift = mc->rshift;
int max = mc->max;
int min = mc->min;
unsigned int sign_bit = mc->sign_bit;
unsigned int mask = (1 << fls(max)) - 1;
unsigned int invert = mc->invert;
int err;
@ -2822,13 +2873,16 @@ int snd_soc_put_volsw(struct snd_kcontrol *kcontrol,
unsigned int val2 = 0;
unsigned int val, val_mask;
val = (ucontrol->value.integer.value[0] & mask);
if (sign_bit)
mask = BIT(sign_bit + 1) - 1;
val = ((ucontrol->value.integer.value[0] + min) & mask);
if (invert)
val = max - val;
val_mask = mask << shift;
val = val << shift;
if (snd_soc_volsw_is_stereo(mc)) {
val2 = (ucontrol->value.integer.value[1] & mask);
val2 = ((ucontrol->value.integer.value[1] + min) & mask);
if (invert)
val2 = max - val2;
if (reg == reg2) {