[PATCH 6.8 544/715] ALSA: scarlett2: Fix Scarlett 4th Gen 4i4 low-voltage detection

Sasha Levin
2024-03-24T22:43:57Z

From: "Geoffrey D. Bennett" <g@b4.vu>

[ Upstream commit 6ef1f08b53fdb6f5f00f17f85a60b3247d77fa54 ]

The value currently being read to determine the low-voltage state is
actually the front panel state. Fix the code to use the correct offset
for the low-voltage state.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Fixes: d7cfa2fdfc8a ("ALSA: scarlett2: Add power status control")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Message-ID: <d97b7d87f43b0e54f37e1552394be2f3ae182704.1710047969.git.g@b4.vu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
sound/usb/mixer_scarlett2.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/sound/usb/mixer_scarlett2.c b/sound/usb/mixer_scarlett2.c
index 6de605a601e5f..bce69a78c5052 100644
--- a/sound/usb/mixer_scarlett2.c
+++ b/sound/usb/mixer_scarlett2.c
@@ -415,7 +415,7 @@ enum {
SCARLETT2_CONFIG_INPUT_SELECT_SWITCH,
SCARLETT2_CONFIG_INPUT_LINK_SWITCH,
SCARLETT2_CONFIG_POWER_EXT,
- SCARLETT2_CONFIG_POWER_STATUS,
+ SCARLETT2_CONFIG_POWER_LOW,
SCARLETT2_CONFIG_PCM_INPUT_SWITCH,
SCARLETT2_CONFIG_DIRECT_MONITOR_GAIN,
SCARLETT2_CONFIG_COUNT
@@ -723,8 +723,8 @@ static const struct scarlett2_config_set scarlett2_config_set_gen4_4i4 = {
[SCARLETT2_CONFIG_POWER_EXT] = {
.offset = 0x168 },

- [SCARLETT2_CONFIG_POWER_STATUS] = {
- .offset = 0x66 }
+ [SCARLETT2_CONFIG_POWER_LOW] = {
+ .offset = 0x16d }
}
};

@@ -6294,8 +6294,7 @@ static int scarlett2_update_power_status(struct usb_mixer_interface *mixer)
{
struct scarlett2_data *private = mixer->private_data;
int err;
- u8 power_ext;
- u8 power_status;
+ u8 power_ext, power_low;

private->power_status_updated = 0;

@@ -6304,12 +6303,12 @@ static int scarlett2_update_power_status(struct usb_mixer_interface *mixer)
if (err < 0)
return err;

- err = scarlett2_usb_get_config(mixer, SCARLETT2_CONFIG_POWER_STATUS,
- 1, &power_status);
+ err = scarlett2_usb_get_config(mixer, SCARLETT2_CONFIG_POWER_LOW,
+ 1, &power_low);
if (err < 0)
return err;

- if (power_status > 1)
+ if (power_low)
private->power_status = SCARLETT2_POWER_STATUS_FAIL;
else if (power_ext)
private->power_status = SCARLETT2_POWER_STATUS_EXT;
--
2.43.0