From 8a8d3afaacd56b8115c8c5d61d61566d4da51fb1 Mon Sep 17 00:00:00 2001
From: Lukasz Spintzyk <lukasz.spintzyk@displaylink.com>
Date: Wed, 10 Feb 2016 12:55:44 +0100
Subject: [PATCH] CHROMIUM: drm/evdi: Add Evdi module userspace api file.
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Old-BUG=chromium:579926
Old-TEST=Build succeds, evdi_drm.h is installed.

Adding evdi module user space api header file.
Header file is necessary by libevdi library.
(review: https://chromium-review.googlesource.com/#/c/326670/)

Signed-off-by: Lukasz Spintzyk <lukasz.spintzyk@displaylink.com>
Reviewed-on: https://chromium-review.googlesource.com/327051
Commit-Ready: Bernie Thompson <bhthompson@chromium.org>
Tested-by: Łukasz Spintzyk <lukasz.spintzyk@displaylink.com>
Reviewed-by: Haixia Shi <hshi@chromium.org>
(rebased from chromeos-2.4.89)

BUG=b:112720782
Signed-off-by: Kristian H. Kristensen <hoegsberg@chromium.org>

Change-Id: I355eb33d9953b1157888e4699ceb749865d8bb19
---
 Makefile.sources       |  1 +
 include/drm/evdi_drm.h | 85 ++++++++++++++++++++++++++++++++++++++++++
 meson.build            |  1 +
 3 files changed, 87 insertions(+)
 create mode 100644 include/drm/evdi_drm.h

diff --git a/Makefile.sources b/Makefile.sources
index 55290fe9..1cb0fa35 100644
--- a/Makefile.sources
+++ b/Makefile.sources
@@ -22,6 +22,7 @@ LIBDRM_INCLUDE_H_FILES := \
 	include/drm/drm_fourcc.h \
 	include/drm/drm_mode.h \
 	include/drm/drm_sarea.h \
+	include/drm/evdi_drm.h \
 	include/drm/i915_drm.h \
 	include/drm/mach64_drm.h \
 	include/drm/mga_drm.h \
diff --git a/include/drm/evdi_drm.h b/include/drm/evdi_drm.h
new file mode 100644
index 00000000..3a00c7fc
--- /dev/null
+++ b/include/drm/evdi_drm.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2015 - 2016 DisplayLink (UK) Ltd.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License v2. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#ifndef __UAPI_EVDI_DRM_H__
+#define __UAPI_EVDI_DRM_H__
+
+/* Output events sent from driver to evdi lib */
+#define DRM_EVDI_EVENT_UPDATE_READY  0x80000000
+#define DRM_EVDI_EVENT_DPMS          0x80000001
+#define DRM_EVDI_EVENT_MODE_CHANGED  0x80000002
+#define DRM_EVDI_EVENT_CRTC_STATE    0x80000003
+
+struct drm_evdi_event_update_ready {
+	struct drm_event base;
+};
+
+struct drm_evdi_event_dpms {
+	struct drm_event base;
+	int32_t mode;
+};
+
+struct drm_evdi_event_mode_changed {
+	struct drm_event base;
+	int32_t hdisplay;
+	int32_t vdisplay;
+	int32_t vrefresh;
+	int32_t bits_per_pixel;
+	uint32_t pixel_format;
+};
+
+struct drm_evdi_event_crtc_state {
+	struct drm_event base;
+	int32_t state;
+};
+
+struct drm_evdi_connect {
+	int32_t connected;
+	int32_t dev_index;
+	const unsigned char * __user edid;
+	unsigned int edid_length;
+};
+
+struct drm_evdi_mapfifo {
+	int32_t reserved;
+};
+
+struct drm_evdi_request_update {
+	int32_t reserved;
+};
+
+enum drm_evdi_grabpix_mode {
+	EVDI_GRABPIX_MODE_RECTS = 0,
+	EVDI_GRABPIX_MODE_DIRTY = 1,
+};
+
+struct drm_evdi_grabpix {
+	enum drm_evdi_grabpix_mode mode;
+	int32_t buf_width;
+	int32_t buf_height;
+	int32_t buf_byte_stride;
+	unsigned char __user *buffer;
+	int32_t num_rects;
+	struct drm_clip_rect __user *rects;
+};
+
+/* Input ioctls from evdi lib to driver */
+#define DRM_EVDI_CONNECT          0x00
+#define DRM_EVDI_REQUEST_UPDATE   0x01
+#define DRM_EVDI_GRABPIX          0x02
+/* LAST_IOCTL 0x5F -- 96 driver specific ioctls to use */
+
+#define DRM_IOCTL_EVDI_CONNECT DRM_IOWR(DRM_COMMAND_BASE +  \
+	DRM_EVDI_CONNECT, struct drm_evdi_connect)
+#define DRM_IOCTL_EVDI_REQUEST_UPDATE DRM_IOWR(DRM_COMMAND_BASE +  \
+	DRM_EVDI_REQUEST_UPDATE, struct drm_evdi_request_update)
+#define DRM_IOCTL_EVDI_GRABPIX DRM_IOWR(DRM_COMMAND_BASE +  \
+	DRM_EVDI_GRABPIX, struct drm_evdi_grabpix)
+
+#endif /* __EVDI_UAPI_DRM_H__ */
+
diff --git a/meson.build b/meson.build
index fc02f552..b10fdad4 100644
--- a/meson.build
+++ b/meson.build
@@ -317,6 +317,7 @@ install_headers(
   'include/drm/savage_drm.h', 'include/drm/sis_drm.h',
   'include/drm/tegra_drm.h', 'include/drm/vc4_drm.h',
   'include/drm/via_drm.h', 'include/drm/virtgpu_drm.h',
+  'include/drm/evdi_drm.h',
   subdir : 'libdrm',
 )
 if with_vmwgfx
-- 
2.30.0.365.g02bc693789-goog