[PATCH v25 09/33] ALSA: Add USB audio device jack type
From: Wesley Cheng <hidden>
Date: 2024-08-23 20:01:53
Also in:
alsa-devel, linux-arm-msm, linux-devicetree, linux-doc, linux-sound, linux-usb, lkml
Subsystem:
input (keyboard, mouse, joystick, touchscreen) drivers, sound, the rest · Maintainers:
Dmitry Torokhov, Jaroslav Kysela, Takashi Iwai, Linus Torvalds
Add an USB jack type, in order to support notifying of a valid USB audio device. Since USB audio devices can have a slew of different configurations that reach beyond the basic headset and headphone use cases, classify these devices differently. Signed-off-by: Wesley Cheng <redacted> --- include/linux/mod_devicetable.h | 2 +- include/sound/jack.h | 4 +++- include/uapi/linux/input-event-codes.h | 3 ++- sound/core/jack.c | 6 ++++-- 4 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 4338b1b4ac44..82826f5a3741 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h@@ -340,7 +340,7 @@ struct pcmcia_device_id { #define INPUT_DEVICE_ID_LED_MAX 0x0f #define INPUT_DEVICE_ID_SND_MAX 0x07 #define INPUT_DEVICE_ID_FF_MAX 0x7f -#define INPUT_DEVICE_ID_SW_MAX 0x10 +#define INPUT_DEVICE_ID_SW_MAX 0x11 #define INPUT_DEVICE_ID_PROP_MAX 0x1f #define INPUT_DEVICE_ID_MATCH_BUS 1
diff --git a/include/sound/jack.h b/include/sound/jack.h
index 1ed90e2109e9..bd3f62281c97 100644
--- a/include/sound/jack.h
+++ b/include/sound/jack.h@@ -22,6 +22,7 @@ struct input_dev; * @SND_JACK_VIDEOOUT: Video out * @SND_JACK_AVOUT: AV (Audio Video) out * @SND_JACK_LINEIN: Line in + * @SND_JACK_USB: USB audio device * @SND_JACK_BTN_0: Button 0 * @SND_JACK_BTN_1: Button 1 * @SND_JACK_BTN_2: Button 2
@@ -43,6 +44,7 @@ enum snd_jack_types { SND_JACK_VIDEOOUT = 0x0010, SND_JACK_AVOUT = SND_JACK_LINEOUT | SND_JACK_VIDEOOUT, SND_JACK_LINEIN = 0x0020, + SND_JACK_USB = 0x0040, /* Kept separate from switches to facilitate implementation */ SND_JACK_BTN_0 = 0x4000,
@@ -54,7 +56,7 @@ enum snd_jack_types { }; /* Keep in sync with definitions above */ -#define SND_JACK_SWITCH_TYPES 6 +#define SND_JACK_SWITCH_TYPES 7 struct snd_jack { struct list_head kctl_list;
diff --git a/include/uapi/linux/input-event-codes.h b/include/uapi/linux/input-event-codes.h
index 03edf2ccdf6c..607a0c0fc20a 100644
--- a/include/uapi/linux/input-event-codes.h
+++ b/include/uapi/linux/input-event-codes.h@@ -922,7 +922,8 @@ #define SW_MUTE_DEVICE 0x0e /* set = device disabled */ #define SW_PEN_INSERTED 0x0f /* set = pen inserted */ #define SW_MACHINE_COVER 0x10 /* set = cover closed */ -#define SW_MAX 0x10 +#define SW_USB_INSERT 0x11 /* set = USB audio device connected */ +#define SW_MAX 0x11 #define SW_CNT (SW_MAX+1) /*
diff --git a/sound/core/jack.c b/sound/core/jack.c
index e4bcecdf89b7..de7c603e92b7 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c@@ -34,6 +34,7 @@ static const int jack_switch_types[SND_JACK_SWITCH_TYPES] = { SW_JACK_PHYSICAL_INSERT, SW_VIDEOOUT_INSERT, SW_LINEIN_INSERT, + SW_USB_INSERT, }; #endif /* CONFIG_SND_JACK_INPUT_DEV */
@@ -241,8 +242,9 @@ static ssize_t jack_kctl_id_read(struct file *file, static const char * const jack_events_name[] = { "HEADPHONE(0x0001)", "MICROPHONE(0x0002)", "LINEOUT(0x0004)", "MECHANICAL(0x0008)", "VIDEOOUT(0x0010)", "LINEIN(0x0020)", - "", "", "", "BTN_5(0x0200)", "BTN_4(0x0400)", "BTN_3(0x0800)", - "BTN_2(0x1000)", "BTN_1(0x2000)", "BTN_0(0x4000)", "", + "USB(0x0040)", "", "", "BTN_5(0x0200)", "BTN_4(0x0400)", + "BTN_3(0x0800)", "BTN_2(0x1000)", "BTN_1(0x2000)", "BTN_0(0x4000)", + "", }; /* the recommended buffer size is 256 */