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exynos: Introduce exynos_handle_event() 

Used to handle kernel events specific to the Exynos platform.
Currently only G2D events are handled.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
main
Tobias Jakobi 2015-11-30 12:12:13 +09:00 committed by Emil Velikov
parent d6ffb99726
commit 2191ed904f
4 changed files with 115 additions and 0 deletions
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1
exynos/exynos-symbol-check
View File

@ -22,6 +22,7 @@ exynos_device_destroy
exynos_prime_fd_to_handle
exynos_prime_handle_to_fd
exynos_vidi_connection
exynos_handle_event
g2d_blend
g2d_copy
g2d_copy_with_scale

76
exynos/exynos_drm.c
View File

@ -32,6 +32,7 @@
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <sys/mman.h>
#include <linux/stddef.h>
@ -42,6 +43,8 @@
#include "exynos_drm.h"
#include "exynos_drmif.h"
#define U642VOID(x) ((void *)(unsigned long)(x))
/*
* Create exynos drm device object.
*
@ -374,3 +377,76 @@ exynos_vidi_connection(struct exynos_device *dev, uint32_t connect,
return 0;
}
static void
exynos_handle_vendor(int fd, struct drm_event *e, void *ctx)
{
struct drm_exynos_g2d_event *g2d;
struct exynos_event_context *ectx = ctx;
switch (e->type) {
case DRM_EXYNOS_G2D_EVENT:
if (ectx->version < 1 || ectx->g2d_event_handler == NULL)
break;
g2d = (struct drm_exynos_g2d_event *)e;
ectx->g2d_event_handler(fd, g2d->cmdlist_no, g2d->tv_sec,
g2d->tv_usec, U642VOID(g2d->user_data));
break;
default:
break;
}
}
int
exynos_handle_event(struct exynos_device *dev, struct exynos_event_context *ctx)
{
char buffer[1024];
int len, i;
struct drm_event *e;
struct drm_event_vblank *vblank;
drmEventContextPtr evctx = &ctx->base;
/* The DRM read semantics guarantees that we always get only
* complete events. */
len = read(dev->fd, buffer, sizeof buffer);
if (len == 0)
return 0;
if (len < (int)sizeof *e)
return -1;
i = 0;
while (i < len) {
e = (struct drm_event *) &buffer[i];
switch (e->type) {
case DRM_EVENT_VBLANK:
if (evctx->version < 1 ||
evctx->vblank_handler == NULL)
break;
vblank = (struct drm_event_vblank *) e;
evctx->vblank_handler(dev->fd,
vblank->sequence,
vblank->tv_sec,
vblank->tv_usec,
U642VOID (vblank->user_data));
break;
case DRM_EVENT_FLIP_COMPLETE:
if (evctx->version < 2 ||
evctx->page_flip_handler == NULL)
break;
vblank = (struct drm_event_vblank *) e;
evctx->page_flip_handler(dev->fd,
vblank->sequence,
vblank->tv_sec,
vblank->tv_usec,
U642VOID (vblank->user_data));
break;
default:
exynos_handle_vendor(dev->fd, e, evctx);
break;
}
i += e->length;
}
return 0;
}

12
exynos/exynos_drm.h
View File

@ -157,4 +157,16 @@ struct drm_exynos_g2d_exec {
#define DRM_IOCTL_EXYNOS_G2D_EXEC DRM_IOWR(DRM_COMMAND_BASE + \
DRM_EXYNOS_G2D_EXEC, struct drm_exynos_g2d_exec)
/* EXYNOS specific events */
#define DRM_EXYNOS_G2D_EVENT 0x80000000
struct drm_exynos_g2d_event {
struct drm_event base;
__u64 user_data;
__u32 tv_sec;
__u32 tv_usec;
__u32 cmdlist_no;
__u32 reserved;
};
#endif

26
exynos/exynos_drmif.h
View File

@ -54,6 +54,25 @@ struct exynos_bo {
uint32_t name;
};
#define EXYNOS_EVENT_CONTEXT_VERSION 1
/*
* Exynos Event Context structure.
*
* @base: base context (for core events).
* @version: version info similar to the one in 'drmEventContext'.
* @g2d_event_handler: handler for G2D events.
*/
struct exynos_event_context {
drmEventContext base;
int version;
void (*g2d_event_handler)(int fd, unsigned int cmdlist_no,
unsigned int tv_sec, unsigned int tv_usec,
void *user_data);
};
/*
* device related functions:
*/
@ -83,4 +102,11 @@ int exynos_prime_fd_to_handle(struct exynos_device *dev, int fd,
int exynos_vidi_connection(struct exynos_device *dev, uint32_t connect,
uint32_t ext, void *edid);
/*
* event handling related functions:
*/
int exynos_handle_event(struct exynos_device *dev,
struct exynos_event_context *ctx);
#endif /* EXYNOS_DRMIF_H_ */