In this patch, to support exynos for KMS, Exynos KMS driver is newly added.
Also, Exynos is added to the list of kmstest supported modules.
Signed-off-by: Hyungwon Hwang <human.hwang@xxxxxxxxxxx>
---
libkms/exynos.c | 207 ++++++++++++++++++++++++++++++++++++++++++++++++++
libkms/internal.h | 2 +
libkms/linux.c | 4 +
tests/kmstest/main.c | 1 +
4 files changed, 214 insertions(+)
create mode 100644 libkms/exynos.c
diff --git a/libkms/exynos.c b/libkms/exynos.c
new file mode 100644
index 0000000..93e36a1
--- /dev/null
+++ b/libkms/exynos.c
@@ -0,0 +1,207 @@
+/* exynos.c
+ *
+ * Copyright 2009 Samsung Electronics Co., Ltd.
+ * Authors:
+ * SooChan Lim <sc1.lim@xxxxxxxxxxx>
+ * Sangjin LEE <lsj119@xxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#define HAVE_STDINT_H
+#define _FILE_OFFSET_BITS 64
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "internal.h"
+
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include "xf86drm.h"
+
+#include "exynos_drm.h"
+
+struct exynos_bo
+{
+ struct kms_bo base;
+ unsigned map_count;
+};
+
+static int
+exynos_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
+{
+ switch (key) {
+ case KMS_BO_TYPE:
+ *out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 |
KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int
+exynos_destroy(struct kms_driver *kms)
+{
+ free(kms);
+ return 0;
+}
+
+static int
+exynos_bo_create(struct kms_driver *kms,
+ const unsigned width, const unsigned height,
+ const enum kms_bo_type type, const unsigned *attr,
+ struct kms_bo **out)
+{
+ struct drm_exynos_gem_create arg;
+ unsigned size, pitch;
+ struct exynos_bo *bo;
+ int i, ret;
+
+ for (i = 0; attr[i]; i += 2) {
+ switch (attr[i]) {
+ case KMS_WIDTH:
+ case KMS_HEIGHT:
+ case KMS_BO_TYPE:
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ bo = calloc(1, sizeof(*bo));
+ if (!bo)
+ return -ENOMEM;
+
+ if (type == KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8) {
+ pitch = 64 * 4;
+ size = 64 * 64 * 4;
+ } else if (type == KMS_BO_TYPE_SCANOUT_X8R8G8B8) {
+ pitch = width * 4;
+ pitch = (pitch + 512 - 1) & ~(512 - 1);
+ size = pitch * ((height + 4 - 1) & ~(4 - 1));
+ } else {
+ return -EINVAL;
+ }
+
+ memset(&arg, 0, sizeof(arg));
+ arg.size = size;
+
+ ret = drmCommandWriteRead(kms->fd, DRM_EXYNOS_GEM_CREATE, &arg,
sizeof(arg));
+ if (ret)
+ goto err_free;
+
+ bo->base.kms = kms;
+ bo->base.handle = arg.handle;
+ bo->base.size = size;
+ bo->base.pitch = pitch;
+
+ *out = &bo->base;
+
+ return 0;
+
+err_free:
+ free(bo);
+ return ret;
+}
+
+static int
+exynos_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
+{
+ switch (key) {
+ default:
+ return -EINVAL;
+ }
+}
+
+static int
+exynos_bo_map(struct kms_bo *_bo, void **out)
+{
+ struct exynos_bo *bo = (struct exynos_bo *)_bo;
+ struct drm_exynos_gem_map_off arg;
+ void *map = NULL;
+ int ret;
+
+ if (bo->base.ptr) {
+ bo->map_count++;
+ *out = bo->base.ptr;
+ return 0;
+ }
+
+ memset(&arg, 0, sizeof(arg));
+ arg.handle = bo->base.handle;
+
+ ret = drmCommandWriteRead(bo->base.kms->fd, DRM_EXYNOS_GEM_MAP_OFFSET,
&arg, sizeof(arg));
+ if (ret)
+ return ret;
+
+ map = mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED,
bo->base.kms->fd, arg.offset);
+ if (map == MAP_FAILED)
+ return -errno;
+
+ bo->base.ptr = map;
+ bo->map_count++;
+ *out = bo->base.ptr;
+
+ return 0;
+}
+
+static int
+exynos_bo_unmap(struct kms_bo *_bo)
+{
+ struct exynos_bo *bo = (struct exynos_bo *)_bo;
+ bo->map_count--;
+ return 0;
+}
+
+static int
+exynos_bo_destroy(struct kms_bo *_bo)
+{
+ struct exynos_bo *bo = (struct exynos_bo *)_bo;
+ struct drm_gem_close arg;
+ int ret;
+
+ if (bo->base.ptr) {
+ /* XXX Sanity check map_count */
+ munmap(bo->base.ptr, bo->base.size);
+ bo->base.ptr = NULL;
+ }
+
+ memset(&arg, 0, sizeof(arg));
+ arg.handle = bo->base.handle;
+
+ ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_GEM_CLOSE, &arg);
+ if (ret)
+ return -errno;
+
+ free(bo);
+ return 0;
+}
+
+int
+exynos_create(int fd, struct kms_driver **out)
+{
+ struct kms_driver *kms;
+
+ kms = calloc(1, sizeof(*kms));
+ if (!kms)
+ return -ENOMEM;
+
+ kms->fd = fd;
+
+ kms->bo_create = exynos_bo_create;
+ kms->bo_map = exynos_bo_map;
+ kms->bo_unmap = exynos_bo_unmap;
+ kms->bo_get_prop = exynos_bo_get_prop;
+ kms->bo_destroy = exynos_bo_destroy;
+ kms->get_prop = exynos_get_prop;
+ kms->destroy = exynos_destroy;
+ *out = kms;
+
+ return 0;
+}
diff --git a/libkms/internal.h b/libkms/internal.h
index 5e2501e..f831b57 100644
--- a/libkms/internal.h
+++ b/libkms/internal.h
@@ -74,4 +74,6 @@ int nouveau_create(int fd, struct kms_driver **out);
int radeon_create(int fd, struct kms_driver **out);
+int exynos_create(int fd, struct kms_driver **out);
+
#endif
diff --git a/libkms/linux.c b/libkms/linux.c
index eec0162..9b4f29e 100644
--- a/libkms/linux.c
+++ b/libkms/linux.c
@@ -115,6 +115,10 @@ linux_from_sysfs(int fd, struct kms_driver **out)
else if (!strcmp(name, "radeon"))
ret = radeon_create(fd, out);
#endif
+#ifdef HAVE_EXYNOS
+ else if (!strcmp(name, "exynos"))
+ ret = exynos_create(fd, out);
+#endif
else
ret = -ENOSYS;
diff --git a/tests/kmstest/main.c b/tests/kmstest/main.c
index 5df0a38..449d75f 100644
--- a/tests/kmstest/main.c
+++ b/tests/kmstest/main.c
@@ -61,6 +61,7 @@ char *drivers[] = {
"radeon",
"nouveau",
"vmwgfx",
+ "exynos",
NULL
};
--
1.7.10.4
Best regards,
Hyungwon Hwang
--
Hyungwon Hwang
S/W Platform Team, Software Center
Samsung Electronics.
human.hwang@xxxxxxxxxxx
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