Linux-libre 4.3.2-gnu

1 files changed, 139 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c
new file mode 100644
index 000000000..62d3fb66d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv04.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright 2012 Red Hat Inc.
+ *
+ * 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 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 HOLDER(S) OR AUTHOR(S) 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.
+ *
+ * Authors: Ben Skeggs
+ */
+#define nv04_disp_root(p) container_of((p), struct nv04_disp_root, object)
+#include "priv.h"
+
+#include <core/client.h>
+
+#include <nvif/class.h>
+#include <nvif/unpack.h>
+
+struct nv04_disp_root {
+	struct nvkm_object object;
+	struct nvkm_disp *disp;
+};
+
+static int
+nv04_disp_scanoutpos(struct nv04_disp_root *root,
+		     void *data, u32 size, int head)
+{
+	struct nvkm_device *device = root->disp->engine.subdev.device;
+	struct nvkm_object *object = &root->object;
+	const u32 hoff = head * 0x2000;
+	union {
+		struct nv04_disp_scanoutpos_v0 v0;
+	} *args = data;
+	u32 line;
+	int ret;
+
+	nvif_ioctl(object, "disp scanoutpos size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, false)) {
+		nvif_ioctl(object, "disp scanoutpos vers %d\n",
+			   args->v0.version);
+		args->v0.vblanks = nvkm_rd32(device, 0x680800 + hoff) & 0xffff;
+		args->v0.vtotal  = nvkm_rd32(device, 0x680804 + hoff) & 0xffff;
+		args->v0.vblanke = args->v0.vtotal - 1;
+
+		args->v0.hblanks = nvkm_rd32(device, 0x680820 + hoff) & 0xffff;
+		args->v0.htotal  = nvkm_rd32(device, 0x680824 + hoff) & 0xffff;
+		args->v0.hblanke = args->v0.htotal - 1;
+
+		/*
+		 * If output is vga instead of digital then vtotal/htotal is
+		 * invalid so we have to give up and trigger the timestamping
+		 * fallback in the drm core.
+		 */
+		if (!args->v0.vtotal || !args->v0.htotal)
+			return -ENOTSUPP;
+
+		args->v0.time[0] = ktime_to_ns(ktime_get());
+		line = nvkm_rd32(device, 0x600868 + hoff);
+		args->v0.time[1] = ktime_to_ns(ktime_get());
+		args->v0.hline = (line & 0xffff0000) >> 16;
+		args->v0.vline = (line & 0x0000ffff);
+	} else
+		return ret;
+
+	return 0;
+}
+
+static int
+nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
+{
+	struct nv04_disp_root *root = nv04_disp_root(object);
+	union {
+		struct nv04_disp_mthd_v0 v0;
+	} *args = data;
+	int head, ret;
+
+	nvif_ioctl(object, "disp mthd size %d\n", size);
+	if (nvif_unpack(args->v0, 0, 0, true)) {
+		nvif_ioctl(object, "disp mthd vers %d mthd %02x head %d\n",
+			   args->v0.version, args->v0.method, args->v0.head);
+		mthd = args->v0.method;
+		head = args->v0.head;
+	} else
+		return ret;
+
+	if (head < 0 || head >= 2)
+		return -ENXIO;
+
+	switch (mthd) {
+	case NV04_DISP_SCANOUTPOS:
+		return nv04_disp_scanoutpos(root, data, size, head);
+	default:
+		break;
+	}
+
+	return -EINVAL;
+}
+
+static struct nvkm_object_func
+nv04_disp_root = {
+	.mthd = nv04_disp_mthd,
+	.ntfy = nvkm_disp_ntfy,
+};
+
+static int
+nv04_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass,
+		   void *data, u32 size, struct nvkm_object **pobject)
+{
+	struct nv04_disp_root *root;
+
+	if (!(root = kzalloc(sizeof(*root), GFP_KERNEL)))
+		return -ENOMEM;
+	root->disp = disp;
+	*pobject = &root->object;
+
+	nvkm_object_ctor(&nv04_disp_root, oclass, &root->object);
+	return 0;
+}
+
+const struct nvkm_disp_oclass
+nv04_disp_root_oclass = {
+	.base.oclass = NV04_DISP,
+	.base.minver = -1,
+	.base.maxver = -1,
+	.ctor = nv04_disp_root_new,
+};