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ALSA: usb-audio: scarlett2: Remove redundant info->button_count

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The per-model button_count value was used to determine whether
dim/mute controls should be added, but these are present iff
line_out_hw_vol is true. Remove button_count and replace with
SCARLETT2_BUTTON_MAX and a check for line_out_hw_vol true.

Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://lore.kernel.org/r/20210620164634.GA9193@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Geoffrey D. Bennett 2021-06-21 02:16:34 +09:30 committed by Takashi Iwai
parent 411b22ed67
commit 03bdbcf08a
1 changed files with 23 additions and 18 deletions
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41
sound/usb/mixer_scarlett_gen2.c
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@ -218,7 +218,6 @@ struct scarlett2_ports {
struct scarlett2_device_info {
u8 line_out_hw_vol; /* line out hw volume is sw controlled */
u8 button_count; /* number of buttons */
u8 level_input_count; /* inputs with level selectable */
u8 pad_input_count; /* inputs with pad selectable */
const char * const line_out_descrs[SCARLETT2_ANALOGUE_MAX];
@ -370,9 +369,6 @@ static const struct scarlett2_device_info s18i20_gen2_info = {
*/
.line_out_hw_vol = 1,
/* Mute and dim buttons */
.button_count = 2,
.line_out_descrs = {
"Monitor L",
"Monitor R",
@ -1108,7 +1104,8 @@ static int scarlett2_add_new_ctl(struct usb_mixer_interface *mixer,
static int scarlett2_update_volumes(struct usb_mixer_interface *mixer)
{
struct scarlett2_mixer_data *private = mixer->private_data;
const struct scarlett2_ports *ports = private->info->ports;
const struct scarlett2_device_info *info = private->info;
const struct scarlett2_ports *ports = info->ports;
struct scarlett2_usb_volume_status volume_status;
int num_line_out =
ports[SCARLETT2_PORT_TYPE_ANALOGUE].num[SCARLETT2_PORT_OUT];
@ -1129,8 +1126,9 @@ static int scarlett2_update_volumes(struct usb_mixer_interface *mixer)
private->vol[i] = private->master_vol;
}
for (i = 0; i < private->info->button_count; i++)
private->buttons[i] = !!volume_status.buttons[i];
if (info->line_out_hw_vol)
for (i = 0; i < SCARLETT2_BUTTON_MAX; i++)
private->buttons[i] = !!volume_status.buttons[i];
return 0;
}
@ -1547,13 +1545,15 @@ static int scarlett2_add_line_out_ctls(struct usb_mixer_interface *mixer)
}
/* Add HW button controls */
for (i = 0; i < private->info->button_count; i++) {
err = scarlett2_add_new_ctl(mixer, &scarlett2_button_ctl,
i, 1, scarlett2_button_names[i],
&private->button_ctls[i]);
if (err < 0)
return err;
}
if (info->line_out_hw_vol)
for (i = 0; i < SCARLETT2_BUTTON_MAX; i++) {
err = scarlett2_add_new_ctl(
mixer, &scarlett2_button_ctl,
i, 1, scarlett2_button_names[i],
&private->button_ctls[i]);
if (err < 0)
return err;
}
return 0;
}
@ -1961,8 +1961,9 @@ static int scarlett2_read_configs(struct usb_mixer_interface *mixer)
private->vol[i] = volume;
}
for (i = 0; i < info->button_count; i++)
private->buttons[i] = !!volume_status.buttons[i];
if (info->line_out_hw_vol)
for (i = 0; i < SCARLETT2_BUTTON_MAX; i++)
private->buttons[i] = !!volume_status.buttons[i];
for (i = 0; i < num_mixer_out; i++) {
err = scarlett2_usb_get_mix(mixer, i);
@ -2001,11 +2002,15 @@ static void scarlett2_mixer_interrupt_button_change(
struct usb_mixer_interface *mixer)
{
struct scarlett2_mixer_data *private = mixer->private_data;
const struct scarlett2_device_info *info = private->info;
int i;
private->vol_updated = 1;
for (i = 0; i < private->info->button_count; i++)
if (!info->line_out_hw_vol)
return;
for (i = 0; i < SCARLETT2_BUTTON_MAX; i++)
snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
&private->button_ctls[i]->id);
}
@ -2109,7 +2114,7 @@ static int snd_scarlett_gen2_controls_create(struct usb_mixer_interface *mixer,
return err;
/* Set up the interrupt polling if there are hardware buttons */
if (info->button_count) {
if (info->line_out_hw_vol) {
err = scarlett2_mixer_status_create(mixer);
if (err < 0)
return err;