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linux-user: Add support for selected alsa timer instructions using ioctls

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This patch implements functionalities of following ioctls:

SNDRV_TIMER_IOCTL_START - Start selected alsa timer

    Starts the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be started. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

SNDRV_TIMER_IOCTL_STOP - Stop selected alsa timer

    Stops the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be stopped. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

SNDRV_TIMER_IOCTL_CONTINUE - Continue selected alsa timer

    Continues the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be continued. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

SNDRV_TIMER_IOCTL_PAUSE - Pause selected alsa timer

    Pauses the timer device that is selected. The third ioctl's argument is
    ignored. Before calling this ioctl, the ioctl "SNDRV_TIMER_IOCTL_SELECT"
    should be called first to select the timer that is to be paused. If no
    timer is selected, the error EBADFD ("File descriptor in bad shape")
    is returned.

Implementation notes:

    Since all of the implemented ioctls have NULL as their third argument,
    their implementation was straightforward.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Filip Bozuta <Filip.Bozuta@rt-rk.com>
Message-Id: <1579117007-7565-13-git-send-email-Filip.Bozuta@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Filip Bozuta 2020-01-15 20:36:46 +01:00 committed by Laurent Vivier
parent fe333025c6
commit 045823a98c
2 changed files with 8 additions and 0 deletions
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4
linux-user/ioctls.h
View File

@ -477,6 +477,10 @@
MK_PTR(MK_STRUCT(STRUCT_snd_timer_params)))
IOCTL(SNDRV_TIMER_IOCTL_STATUS, IOC_R,
MK_PTR(MK_STRUCT(STRUCT_snd_timer_status)))
IOCTL(SNDRV_TIMER_IOCTL_START, 0, TYPE_NULL)
IOCTL(SNDRV_TIMER_IOCTL_STOP, 0, TYPE_NULL)
IOCTL(SNDRV_TIMER_IOCTL_CONTINUE, 0, TYPE_NULL)
IOCTL(SNDRV_TIMER_IOCTL_PAUSE, 0, TYPE_NULL)
IOCTL(HDIO_GETGEO, IOC_R, MK_PTR(MK_STRUCT(STRUCT_hd_geometry)))
IOCTL(HDIO_GET_UNMASKINTR, IOC_R, MK_PTR(TYPE_INT))

4
linux-user/syscall_defs.h
View File

@ -2516,6 +2516,10 @@ struct target_snd_timer_status {
struct snd_timer_params)
#define TARGET_SNDRV_TIMER_IOCTL_STATUS TARGET_IOR('T', 0x14, \
struct target_snd_timer_status)
#define TARGET_SNDRV_TIMER_IOCTL_START TARGET_IO('T', 0xa0)
#define TARGET_SNDRV_TIMER_IOCTL_STOP TARGET_IO('T', 0xa1)
#define TARGET_SNDRV_TIMER_IOCTL_CONTINUE TARGET_IO('T', 0xa2)
#define TARGET_SNDRV_TIMER_IOCTL_PAUSE TARGET_IO('T', 0xa3)
/* vfat ioctls */
#define TARGET_VFAT_IOCTL_READDIR_BOTH TARGET_IORU('r', 1)