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ALSA: ak411x: Use array instead of offsetof()

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The ak4113, ak4114 and ak4117 i2c drivers have some tricky codes to
access the struct fields in the callback.  This can be simplified by
replacing the struct fields with the array.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2017-05-12 10:47:16 +02:00
parent 2e0de6ea95
commit 239480ab92
6 changed files with 60 additions and 48 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
sound/i2c/other/ak4113.c
View File

@@ -199,12 +199,11 @@ static int snd_ak4113_in_error_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4113 *chip = snd_kcontrol_chip(kcontrol);
long *ptr;
spin_lock_irq(&chip->lock);
ptr = (long *)(((char *)chip) + kcontrol->private_value);
ucontrol->value.integer.value[0] = *ptr;
*ptr = 0;
ucontrol->value.integer.value[0] =
chip->errors[kcontrol->private_value];
chip->errors[kcontrol->private_value] = 0;
spin_unlock_irq(&chip->lock);
return 0;
}
@@ -373,7 +372,7 @@ static struct snd_kcontrol_new snd_ak4113_iec958_controls[] = {
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4113_in_error_info,
.get = snd_ak4113_in_error_get,
.private_value = offsetof(struct ak4113, parity_errors),
.private_value = AK4113_PARITY_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -382,7 +381,7 @@ static struct snd_kcontrol_new snd_ak4113_iec958_controls[] = {
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4113_in_error_info,
.get = snd_ak4113_in_error_get,
.private_value = offsetof(struct ak4113, v_bit_errors),
.private_value = AK4113_V_BIT_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -391,7 +390,7 @@ static struct snd_kcontrol_new snd_ak4113_iec958_controls[] = {
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4113_in_error_info,
.get = snd_ak4113_in_error_get,
.private_value = offsetof(struct ak4113, ccrc_errors),
.private_value = AK4113_CCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -400,7 +399,7 @@ static struct snd_kcontrol_new snd_ak4113_iec958_controls[] = {
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4113_in_error_info,
.get = snd_ak4113_in_error_get,
.private_value = offsetof(struct ak4113, qcrc_errors),
.private_value = AK4113_QCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -551,13 +550,13 @@ int snd_ak4113_check_rate_and_errors(struct ak4113 *ak4113, unsigned int flags)
rcs2 = reg_read(ak4113, AK4113_REG_RCS2);
spin_lock_irqsave(&ak4113->lock, _flags);
if (rcs0 & AK4113_PAR)
ak4113->parity_errors++;
ak4113->errors[AK4113_PARITY_ERRORS]++;
if (rcs0 & AK4113_V)
ak4113->v_bit_errors++;
ak4113->errors[AK4113_V_BIT_ERRORS]++;
if (rcs2 & AK4113_CCRC)
ak4113->ccrc_errors++;
ak4113->errors[AK4113_CCRC_ERRORS]++;
if (rcs2 & AK4113_QCRC)
ak4113->qcrc_errors++;
ak4113->errors[AK4113_QCRC_ERRORS]++;
c0 = (ak4113->rcs0 & (AK4113_QINT | AK4113_CINT | AK4113_STC |
AK4113_AUDION | AK4113_AUTO | AK4113_UNLCK)) ^
(rcs0 & (AK4113_QINT | AK4113_CINT | AK4113_STC |

23
sound/i2c/other/ak4114.c
View File

@@ -194,12 +194,11 @@ static int snd_ak4114_in_error_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
long *ptr;
spin_lock_irq(&chip->lock);
ptr = (long *)(((char *)chip) + kcontrol->private_value);
ucontrol->value.integer.value[0] = *ptr;
*ptr = 0;
ucontrol->value.integer.value[0] =
chip->errors[kcontrol->private_value];
chip->errors[kcontrol->private_value] = 0;
spin_unlock_irq(&chip->lock);
return 0;
}
@@ -341,7 +340,7 @@ static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4114_in_error_info,
.get = snd_ak4114_in_error_get,
.private_value = offsetof(struct ak4114, parity_errors),
.private_value = AK4114_PARITY_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -349,7 +348,7 @@ static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4114_in_error_info,
.get = snd_ak4114_in_error_get,
.private_value = offsetof(struct ak4114, v_bit_errors),
.private_value = AK4114_V_BIT_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -357,7 +356,7 @@ static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4114_in_error_info,
.get = snd_ak4114_in_error_get,
.private_value = offsetof(struct ak4114, ccrc_errors),
.private_value = AK4114_CCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -365,7 +364,7 @@ static struct snd_kcontrol_new snd_ak4114_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4114_in_error_info,
.get = snd_ak4114_in_error_get,
.private_value = offsetof(struct ak4114, qcrc_errors),
.private_value = AK4114_QCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -581,13 +580,13 @@ int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
spin_lock_irqsave(&ak4114->lock, _flags);
if (rcs0 & AK4114_PAR)
ak4114->parity_errors++;
ak4114->errors[AK4114_PARITY_ERRORS]++;
if (rcs1 & AK4114_V)
ak4114->v_bit_errors++;
ak4114->errors[AK4114_V_BIT_ERRORS]++;
if (rcs1 & AK4114_CCRC)
ak4114->ccrc_errors++;
ak4114->errors[AK4114_CCRC_ERRORS]++;
if (rcs1 & AK4114_QCRC)
ak4114->qcrc_errors++;
ak4114->errors[AK4114_QCRC_ERRORS]++;
c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
(rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);

23
sound/i2c/other/ak4117.c
View File

@@ -168,12 +168,11 @@ static int snd_ak4117_in_error_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
long *ptr;
spin_lock_irq(&chip->lock);
ptr = (long *)(((char *)chip) + kcontrol->private_value);
ucontrol->value.integer.value[0] = *ptr;
*ptr = 0;
ucontrol->value.integer.value[0] =
chip->errors[kcontrol->private_value];
chip->errors[kcontrol->private_value] = 0;
spin_unlock_irq(&chip->lock);
return 0;
}
@@ -328,7 +327,7 @@ static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = offsetof(struct ak4117, parity_errors),
.private_value = AK4117_PARITY_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -336,7 +335,7 @@ static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = offsetof(struct ak4117, v_bit_errors),
.private_value = AK4117_V_BIT_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -344,7 +343,7 @@ static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = offsetof(struct ak4117, ccrc_errors),
.private_value = AK4117_CCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -352,7 +351,7 @@ static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = offsetof(struct ak4117, qcrc_errors),
.private_value = AK4117_QCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
@@ -470,13 +469,13 @@ int snd_ak4117_check_rate_and_errors(struct ak4117 *ak4117, unsigned int flags)
// printk(KERN_DEBUG "AK IRQ: rcs0 = 0x%x, rcs1 = 0x%x, rcs2 = 0x%x\n", rcs0, rcs1, rcs2);
spin_lock_irqsave(&ak4117->lock, _flags);
if (rcs0 & AK4117_PAR)
ak4117->parity_errors++;
ak4117->errors[AK4117_PARITY_ERRORS]++;
if (rcs0 & AK4117_V)
ak4117->v_bit_errors++;
ak4117->errors[AK4117_V_BIT_ERRORS]++;
if (rcs2 & AK4117_CCRC)
ak4117->ccrc_errors++;
ak4117->errors[AK4117_CCRC_ERRORS]++;
if (rcs2 & AK4117_QCRC)
ak4117->qcrc_errors++;
ak4117->errors[AK4117_QCRC_ERRORS]++;
c0 = (ak4117->rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK)) ^
(rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK));
c1 = (ak4117->rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f)) ^