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Change some timer ioctls due to confliction

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Change values of some timer ioctls to avoid confliction with FIO* ioctls.
Use old ioctls if the timer protocol version doesn't match.
This commit is contained in:
Takashi Iwai 2005-05-15 14:47:03 +00:00
parent 1aaf4a50af
commit 0d0e1a55c2
2 changed files with 31 additions and 8 deletions
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11
include/sound/asound.h
View file

@ -558,7 +558,7 @@ enum {
* Timer section - /dev/snd/timer
*/
#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 3)
#define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 4)
enum sndrv_timer_class {
SNDRV_TIMER_CLASS_NONE = -1,
@ -671,10 +671,11 @@ enum {
SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, struct sndrv_timer_info),
SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, struct sndrv_timer_params),
SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, struct sndrv_timer_status),
SNDRV_TIMER_IOCTL_START = _IO('T', 0x20),
SNDRV_TIMER_IOCTL_STOP = _IO('T', 0x21),
SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0x22),
SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0x23),
/* The following four ioctls are changed since 1.0.9 due to confliction */
SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
};
struct sndrv_timer_read {

28
src/timer/timer_hw.c
View file

@ -38,6 +38,13 @@ const char *_snd_module_timer_hw = "";
#define SNDRV_TIMER_IOCTL_STATUS_OLD _IOW('T', 0x14, struct sndrv_timer_status)
enum {
SNDRV_TIMER_IOCTL_START_OLD = _IO('T', 0x20),
SNDRV_TIMER_IOCTL_STOP_OLD = _IO('T', 0x21),
SNDRV_TIMER_IOCTL_CONTINUE_OLD = _IO('T', 0x22),
SNDRV_TIMER_IOCTL_PAUSE_OLD = _IO('T', 0x23),
};
static int snd_timer_hw_close(snd_timer_t *handle)
{
snd_timer_t *tmr = handle;
@ -140,11 +147,16 @@ static int snd_timer_hw_status(snd_timer_t *handle, snd_timer_status_t * status)
static int snd_timer_hw_start(snd_timer_t *handle)
{
snd_timer_t *tmr;
unsigned int cmd;
tmr = handle;
if (!tmr)
return -EINVAL;
if (ioctl(tmr->poll_fd, SNDRV_TIMER_IOCTL_START) < 0)
if (tmr->version < SNDRV_PROTOCOL_VERSION(2, 0, 4))
cmd = SNDRV_TIMER_IOCTL_START_OLD;
else
cmd = SNDRV_TIMER_IOCTL_START;
if (ioctl(tmr->poll_fd, cmd) < 0)
return -errno;
return 0;
}
@ -152,11 +164,16 @@ static int snd_timer_hw_start(snd_timer_t *handle)
static int snd_timer_hw_stop(snd_timer_t *handle)
{
snd_timer_t *tmr;
unsigned int cmd;
tmr = handle;
if (!tmr)
return -EINVAL;
if (ioctl(tmr->poll_fd, SNDRV_TIMER_IOCTL_STOP) < 0)
if (tmr->version < SNDRV_PROTOCOL_VERSION(2, 0, 4))
cmd = SNDRV_TIMER_IOCTL_STOP_OLD;
else
cmd = SNDRV_TIMER_IOCTL_STOP;
if (ioctl(tmr->poll_fd, cmd) < 0)
return -errno;
return 0;
}
@ -164,11 +181,16 @@ static int snd_timer_hw_stop(snd_timer_t *handle)
static int snd_timer_hw_continue(snd_timer_t *handle)
{
snd_timer_t *tmr;
unsigned int cmd;
tmr = handle;
if (!tmr)
return -EINVAL;
if (ioctl(tmr->poll_fd, SNDRV_TIMER_IOCTL_CONTINUE) < 0)
if (tmr->version < SNDRV_PROTOCOL_VERSION(2, 0, 4))
cmd = SNDRV_TIMER_IOCTL_CONTINUE_OLD;
else
cmd = SNDRV_TIMER_IOCTL_CONTINUE;
if (ioctl(tmr->poll_fd, cmd) < 0)
return -errno;
return 0;
}