diff options
| author | Filip Bozuta <Filip.Bozuta@rt-rk.com> | 2020-01-15 20:36:44 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2020-02-19 11:17:40 +0100 |
| commit | d22edf0adfbfb5e5d583b51d274e9fbcb285bb02 (patch) | |
| tree | f3fc6f2c1017844d7e6199c06129326b54cfd17a /linux-user/syscall_defs.h | |
| parent | aca7708eab01475099e3737aff29e12639a22da1 (diff) | |
linux-user: Add support for selecting alsa timer using ioctl
This patch implements functionality of following ioctl:
SNDRV_TIMER_IOCTL_SELECT - Selecting timer
Selects the timer which id is specified. The timer id is specified in the
following strcuture:
struct snd_timer_select {
struct snd_timer_id id; /* timer ID */
unsigned char reserved[32]; /* reserved */
};
A pointer to this structure should be passed as the third ioctl's argument.
Before calling the ioctl, the field "tid" should be initialized with the id
information for the timer which is to be selected. If there is no timer
device with the specified id, the error ENODEV ("No such device") is
returned.
Implementation notes:
Ioctl implemented in this patch has a pointer to a
'struct snd_timer_select' as its third argument.
That is the reason why a corresponding definition
was added in 'linux-user/syscall_types.h'. The rest
of the implementation was straightforward.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-11-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/syscall_defs.h')
| -rw-r--r-- | linux-user/syscall_defs.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h index c714e8b67b..cac9228a37 100644 --- a/linux-user/syscall_defs.h +++ b/linux-user/syscall_defs.h @@ -2474,6 +2474,11 @@ struct target_snd_timer_gstatus { unsigned char reserved[32]; }; +struct target_snd_timer_select { + struct target_snd_timer_id id; + unsigned char reserved[32]; +}; + /* alsa timer ioctls */ #define TARGET_SNDRV_TIMER_IOCTL_PVERSION TARGET_IOR('T', 0x00, int) #define TARGET_SNDRV_TIMER_IOCTL_NEXT_DEVICE TARGET_IOWR('T', 0x01, \ @@ -2484,6 +2489,8 @@ struct target_snd_timer_gstatus { struct target_snd_timer_gparams) #define TARGET_SNDRV_TIMER_IOCTL_GSTATUS TARGET_IOWR('T', 0x05, \ struct target_snd_timer_gstatus) +#define TARGET_SNDRV_TIMER_IOCTL_SELECT TARGET_IOW('T', 0x10, \ + struct target_snd_timer_select) /* vfat ioctls */ #define TARGET_VFAT_IOCTL_READDIR_BOTH TARGET_IORU('r', 1) |