[PATCH] soc-core: Fix volsw_range funcs so SOC_DOUBLE_R_RANGE_TLV works.

[Howard Mitchell]

This fixes a bug when using the SOC_DOUBLE_R_RANGE_TLV macro in
the invert mode. In the non-invert case, e.g.

SOC_DOUBLE_R_RANGE_TLV("<name>", <reg_l>, <reg_r>,
0, 40, 255, 0, <tlv>)

the range sent to the hardware is 40..255, but in the invert case:

SOC_DOUBLE_R_RANGE_TLV("<name>", <reg_l>, <reg_r>,
0, 40, 255, 1, <tlv>)

the range 215..0 was being sent to the hardware. This commit
corrects this to 255..40 so it is consistent with the non-invert
case.

Signed-off-by: Howard Mitchell <***@hmbedded.co.uk>
---
sound/soc/soc-core.c | 20 ++++++++++++--------
1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index d4bfd4a..6a58af3 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3027,9 +3027,10 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
unsigned int val, val_mask;
int ret;

- val = ((ucontrol->value.integer.value[0] + min) & mask);
if (invert)
- val = max - val;
+ val = (max - ucontrol->value.integer.value[0]) & mask;
+ else
+ val = ((ucontrol->value.integer.value[0] + min) & mask);
val_mask = mask << shift;
val = val << shift;

@@ -3038,9 +3039,10 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
return ret;

if (snd_soc_volsw_is_stereo(mc)) {
- val = ((ucontrol->value.integer.value[1] + min) & mask);
if (invert)
- val = max - val;
+ val = (max - ucontrol->value.integer.value[1]) & mask;
+ else
+ val = ((ucontrol->value.integer.value[1] + min) & mask);
val_mask = mask << shift;
val = val << shift;

@@ -3085,8 +3087,9 @@ int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
if (invert)
ucontrol->value.integer.value[0] =
max - ucontrol->value.integer.value[0];
- ucontrol->value.integer.value[0] =
- ucontrol->value.integer.value[0] - min;
+ else
+ ucontrol->value.integer.value[0] =
+ ucontrol->value.integer.value[0] - min;

if (snd_soc_volsw_is_stereo(mc)) {
ret = snd_soc_component_read(component, rreg, &val);
@@ -3097,8 +3100,9 @@ int snd_soc_get_volsw_range(struct snd_kcontrol *kcontrol,
if (invert)
ucontrol->value.integer.value[1] =
max - ucontrol->value.integer.value[1];
- ucontrol->value.integer.value[1] =
- ucontrol->value.integer.value[1] - min;
+ else
+ ucontrol->value.integer.value[1] =
+ ucontrol->value.integer.value[1] - min;
}

return 0;

[Mark Brown]

Post by Howard Mitchell
This fixes a bug when using the SOC_DOUBLE_R_RANGE_TLV macro in
the invert mode. In the non-invert case, e.g.

Applied, thanks.