bool printable_mem( const char* mem, int len ){
uverify( NULL != mem );
uverify( 0 <= len );
int i = 0;
for( i=0; i<len; i++ ){
if( !printable_char( mem[i] ) ){
return false;
}
}
return true;
}
/**
* drm_get_format_name - return a string for drm fourcc format
* @format: format to compute name of
*
* Note that the buffer returned by this function is owned by the caller
* and will need to be freed using kfree().
*/
char *drm_get_format_name(uint32_t format)
{
char *buf = kmalloc(32, GFP_KERNEL);
snprintf(buf, 32,
"%c%c%c%c %s-endian (0x%08x)",
printable_char(format & 0xff),
printable_char((format >> 8) & 0xff),
printable_char((format >> 16) & 0xff),
printable_char((format >> 24) & 0x7f),
format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
format);
return buf;
}
}
return fmt;
}
EXPORT_SYMBOL(drm_mode_legacy_fb_format);
/**
* drm_get_format_name - fill a string with a drm fourcc format's name
* @format: format to compute name of
* @buf: caller-supplied buffer
*/
const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf)
{
snprintf(buf->str, sizeof(buf->str),
"%c%c%c%c %s-endian (0x%08x)",
printable_char(format & 0xff),
printable_char((format >> 8) & 0xff),
printable_char((format >> 16) & 0xff),
printable_char((format >> 24) & 0x7f),
format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
format);
return buf->str;
}
EXPORT_SYMBOL(drm_get_format_name);
/*
* Internal function to query information for a given format. See
* drm_format_info() for the public API.
*/
const struct drm_format_info *__drm_format_info(u32 format)