Revision 01b947afaa940327e7adf57070a4bf3d0bed9810 authored by Thomas Zimmermann on 05 July 2019, 07:31:00 UTC, committed by Gerd Hoffmann on 01 August 2019, 13:01:35 UTC
Generic framebuffer emulation uses a shadow buffer for framebuffers with
dirty() function. If drivers want to use the shadow FB without such a
function, they can now set prefer_shadow or prefer_shadow_fbdev in their
mode_config structures. The former flag is exported to userspace, the
latter flag is fbdev-only.

v3:
	* only schedule dirty worker if fbdev uses shadow fb
	* test shadow fb settings with boolean operators
	* use bool for struct drm_mode_config.prefer_shadow_fbdev
	* fix documentation comments

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Tested-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/315834/
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
1 parent 87e281f
Raw File
poll.h
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef __ASM_GENERIC_POLL_H
#define __ASM_GENERIC_POLL_H

/* These are specified by iBCS2 */
#define POLLIN		0x0001
#define POLLPRI		0x0002
#define POLLOUT		0x0004
#define POLLERR		0x0008
#define POLLHUP		0x0010
#define POLLNVAL	0x0020

/* The rest seem to be more-or-less nonstandard. Check them! */
#define POLLRDNORM	0x0040
#define POLLRDBAND	0x0080
#ifndef POLLWRNORM
#define POLLWRNORM	0x0100
#endif
#ifndef POLLWRBAND
#define POLLWRBAND	0x0200
#endif
#ifndef POLLMSG
#define POLLMSG		0x0400
#endif
#ifndef POLLREMOVE
#define POLLREMOVE	0x1000
#endif
#ifndef POLLRDHUP
#define POLLRDHUP       0x2000
#endif

#define POLLFREE	(__force __poll_t)0x4000	/* currently only for epoll */

#define POLL_BUSY_LOOP	(__force __poll_t)0x8000

struct pollfd {
	int fd;
	short events;
	short revents;
};

#endif	/* __ASM_GENERIC_POLL_H */
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