[PATCH] drm: DRM_FOURCC_STANDALONE macro support

[James Park]

On Thu, Feb 4, 2021 at 6:55 PM James Park <jpark37 at lagfreegames.com> wrote:
>
> Use DRM_FOURCC_STANDALONE to include drm_fourcc.h without drm.h.
>
> Copy type definitions from drm.h to drm_fourcc.h, and wrap with
> DRM_BASIC_TYPED_DEFINED to avoid redundant inclusion.
>
> This will allow code to avoid unnecessary definitions.
>
> Signed-off-by: James Park <jpark37 at lagfreegames.com>
> ---
>  include/uapi/drm/drm.h        | 35 ++++++++++++++++++++++++++++-------
>  include/uapi/drm/drm_fourcc.h | 35 +++++++++++++++++++++++++++++++++++
>  2 files changed, 63 insertions(+), 7 deletions(-)
>
> diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
> index 808b48a..5640062 100644
> --- a/include/uapi/drm/drm.h
> +++ b/include/uapi/drm/drm.h
> @@ -36,23 +36,25 @@
>  #ifndef _DRM_H_
>  #define _DRM_H_
>
> +/**
> + * DRM_BASIC_TYPES_DEFINED section exists in both drm.h and drm_fourcc.h files.
> + * Do not modify the section in one file without updating the other!
> + */
> +
> +#ifndef DRM_BASIC_TYPES_DEFINED
> +#define DRM_BASIC_TYPES_DEFINED
> +
>  #if defined(__KERNEL__)
>
>  #include <linux/types.h>
> -#include <asm/ioctl.h>
> -typedef unsigned int drm_handle_t;
>
>  #elif defined(__linux__)
>
>  #include <linux/types.h>
> -#include <asm/ioctl.h>
> -typedef unsigned int drm_handle_t;
>
> -#else /* One of the BSDs */
> +#else /* Not Linux */
>
>  #include <stdint.h>
> -#include <sys/ioccom.h>
> -#include <sys/types.h>
>  typedef int8_t   __s8;
>  typedef uint8_t  __u8;
>  typedef int16_t  __s16;
> @@ -62,6 +64,25 @@ typedef uint32_t __u32;
>  typedef int64_t  __s64;
>  typedef uint64_t __u64;
>  typedef size_t   __kernel_size_t;
> +
> +#endif
> +
> +#endif /* DRM_BASIC_TYPES_DEFINED */
> +
> +#if defined(__KERNEL__)
> +
> +#include <asm/ioctl.h>
> +typedef unsigned int drm_handle_t;
> +
> +#elif defined(__linux__)
> +
> +#include <asm/ioctl.h>
> +typedef unsigned int drm_handle_t;
> +
> +#else /* One of the BSDs */
> +
> +#include <sys/ioccom.h>
> +#include <sys/types.h>
>  typedef unsigned long drm_handle_t;
>
>  #endif
> diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
> index 723c8e2..5e5f4cf 100644
> --- a/include/uapi/drm/drm_fourcc.h
> +++ b/include/uapi/drm/drm_fourcc.h
> @@ -24,7 +24,42 @@
>  #ifndef DRM_FOURCC_H
>  #define DRM_FOURCC_H
>
> +/**
> + * DRM_BASIC_TYPES_DEFINED section exists in both drm.h and drm_fourcc.h files.
> + * Do not modify the section in one file without updating the other!
> + */
> +
> +#ifndef DRM_BASIC_TYPES_DEFINED
> +#define DRM_BASIC_TYPES_DEFINED
> +
> +#if defined(__KERNEL__)
> +
> +#include <linux/types.h>
> +
> +#elif defined(__linux__)
> +
> +#include <linux/types.h>
> +
> +#else /* Not Linux */
> +
> +#include <stdint.h>
> +typedef int8_t   __s8;
> +typedef uint8_t  __u8;
> +typedef int16_t  __s16;
> +typedef uint16_t __u16;
> +typedef int32_t  __s32;
> +typedef uint32_t __u32;
> +typedef int64_t  __s64;
> +typedef uint64_t __u64;
> +typedef size_t   __kernel_size_t;
> +
> +#endif
> +
> +#endif /* DRM_BASIC_TYPES_DEFINED */
> +
> +#ifndef DRM_FOURCC_STANDALONE
>  #include "drm.h"
> +#endif
>
>  #if defined(__cplusplus)
>  extern "C" {
> --
> 2.7.4
>

Forgot to include Emil and Simon.