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authorAlan Hourihane <alanh@tungstengraphics.com>2008-03-12 09:47:52 +0000
committerAlan Hourihane <alanh@tungstengraphics.com>2008-03-12 09:48:52 +0000
commit7f04dd06e6003dd492ae5ddc876121a686f49157 (patch)
tree590bf83a1e8141f1e8cfc888cc7bb9aa07d06973 /tests/modedemo
parent981f515e2bd4d570ea33bb74ae82cd5b56cc9121 (diff)
Add sample code to test hotplug events
Diffstat (limited to 'tests/modedemo')
-rw-r--r--tests/modedemo/demo.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/tests/modedemo/demo.c b/tests/modedemo/demo.c
index 83a33aa6..3fad984d 100644
--- a/tests/modedemo/demo.c
+++ b/tests/modedemo/demo.c
@@ -22,6 +22,7 @@
#include <sys/ioctl.h>
#include <linux/fb.h>
#endif
+#include <signal.h>
#include "xf86drm.h"
#include "xf86drmMode.h"
@@ -387,9 +388,28 @@ drmModeCrtcPtr demoFindFreeCrtc(struct demo_driver *driver, drmModeOutputPtr out
return crtc;
}
+static int driverfd;
+
+static void
+hotplugSIGNAL(int sig, siginfo_t *si, void *d)
+{
+ union drm_wait_hotplug hw;
+ int ret;
+
+ printf("GOT HOTPLUG EVENT!\n");
+
+ /* ask for another hotplug event ! */
+ memset(&hw, 0, sizeof(hw));
+ hw.request.type = _DRM_HOTPLUG_SIGNAL;
+ hw.request.signal = SIGUSR1;
+ ret = ioctl(driverfd, DRM_IOCTL_WAIT_HOTPLUG, &hw);
+}
+
struct demo_driver* demoCreateDriver(void)
{
struct demo_driver* driver = malloc(sizeof(struct demo_driver));
+ union drm_wait_hotplug hw;
+ int ret = 0;
memset(driver, 0, sizeof(struct demo_driver));
@@ -400,6 +420,33 @@ struct demo_driver* demoCreateDriver(void)
goto err_driver;
}
+#if 0
+ /* ioctl wait for hotplug */
+ do {
+ memset(&hw, 0, sizeof(hw));
+ ret = ioctl(driver->fd, DRM_IOCTL_WAIT_HOTPLUG, &hw);
+ printf("HOTPLUG %d %d %d\n",ret,errno,hw.reply.counter);
+ } while (ret && errno == EBUSY);
+#else
+ /* signal for hotplug */
+ {
+ struct sigaction sa;
+ struct sigaction osa;
+
+ sigemptyset(&sa.sa_mask);
+ sa.sa_flags = SA_SIGINFO;
+ sa.sa_sigaction = hotplugSIGNAL;
+ sigaction(SIGUSR1, &sa, &osa);
+
+ driverfd = driver->fd;
+
+ memset(&hw, 0, sizeof(hw));
+ hw.request.type = _DRM_HOTPLUG_SIGNAL;
+ hw.request.signal = SIGUSR1;
+ ret = ioctl(driver->fd, DRM_IOCTL_WAIT_HOTPLUG, &hw);
+ }
+#endif
+
demoUpdateRes(driver);
if (!driver->res) {
printf("could not retrive resources\n");