drm/nouveau: Add DRM driver for NVIDIA GPUs

This adds a drm/kms staging non-API stable driver for GPUs from NVIDIA.

This driver is a KMS-based driver and requires a compatible nouveau
userspace libdrm and nouveau X.org driver.

This driver requires firmware files not available in this kernel tree,
interested parties can find them via the nouveau project git archive.

This driver is reverse engineered, and is in no way supported by nVidia.

Support for nearly the complete range of nvidia hw from nv04->g80 (nv50)
is available, and the kms driver should support driving nearly all
output types (displayport is under development still) along with supporting
suspend/resume.

This work is all from the upstream nouveau project found at
nouveau.freedesktop.org.

The original authors list from nouveau git tree is:
Anssi Hannula <anssi.hannula@iki.fi>
Ben Skeggs <bskeggs@redhat.com>
Francisco Jerez <currojerez@riseup.net>
Maarten Maathuis <madman2003@gmail.com>
Marcin Kościelnicki <koriakin@0x04.net>
Matthew Garrett <mjg@redhat.com>
Matt Parnell <mparnell@gmail.com>
Patrice Mandin <patmandin@gmail.com>
Pekka Paalanen <pq@iki.fi>
Xavier Chantry <shiningxc@gmail.com>
along with project founder Stephane Marchesin <marchesin@icps.u-strasbg.fr>

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 91 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_encoder.h b/drivers/gpu/drm/nouveau/nouveau_encoder.h
new file mode 100644
index 000000000000..bc4a24029ed1
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nouveau_encoder.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2008 Maarten Maathuis.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __NOUVEAU_ENCODER_H__
+#define __NOUVEAU_ENCODER_H__
+
+#include "drm_encoder_slave.h"
+#include "nouveau_drv.h"
+
+#define NV_DPMS_CLEARED 0x80
+
+struct nouveau_encoder {
+	struct drm_encoder_slave base;
+
+	struct dcb_entry *dcb;
+	int or;
+
+	struct drm_display_mode mode;
+	int last_dpms;
+
+	struct nv04_output_reg restore;
+
+	void (*disconnect)(struct nouveau_encoder *encoder);
+
+	union {
+		struct {
+			int dpcd_version;
+			int link_nr;
+			int link_bw;
+		} dp;
+	};
+};
+
+static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
+{
+	struct drm_encoder_slave *slave = to_encoder_slave(enc);
+
+	return container_of(slave, struct nouveau_encoder, base);
+}
+
+static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
+{
+	return &enc->base.base;
+}
+
+struct nouveau_connector *
+nouveau_encoder_connector_get(struct nouveau_encoder *encoder);
+int nv50_sor_create(struct drm_device *dev, struct dcb_entry *entry);
+int nv50_dac_create(struct drm_device *dev, struct dcb_entry *entry);
+
+struct bit_displayport_encoder_table {
+	uint32_t match;
+	uint8_t  record_nr;
+	uint8_t  unknown;
+	uint16_t script0;
+	uint16_t script1;
+	uint16_t unknown_table;
+} __attribute__ ((packed));
+
+struct bit_displayport_encoder_table_entry {
+	uint8_t vs_level;
+	uint8_t pre_level;
+	uint8_t reg0;
+	uint8_t reg1;
+	uint8_t reg2;
+} __attribute__ ((packed));
+
+#endif /* __NOUVEAU_ENCODER_H__ */