drm: reorganise drm tree to be more future proof.

With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.

This restructures the drm along the lines of other kernel components.

It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.

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

1 files changed, 101 insertions, 0 deletions

diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c
new file mode 100644
index 000000000000..c76fdca7662d
--- /dev/null
+++ b/drivers/gpu/drm/r128/r128_irq.c
@@ -0,0 +1,101 @@
+/* r128_irq.c -- IRQ handling for radeon -*- linux-c -*- */
+/*
+ * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
+ *
+ * The Weather Channel (TM) funded Tungsten Graphics to develop the
+ * initial release of the Radeon 8500 driver under the XFree86 license.
+ * This notice must be preserved.
+ *
+ * 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
+ * PRECISION INSIGHT 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.
+ *
+ * Authors:
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ *    Eric Anholt <anholt@FreeBSD.org>
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "r128_drm.h"
+#include "r128_drv.h"
+
+irqreturn_t r128_driver_irq_handler(DRM_IRQ_ARGS)
+{
+        struct drm_device *dev = (struct drm_device *) arg;
+        drm_r128_private_t *dev_priv = (drm_r128_private_t *) dev->dev_private;
+        int status;
+
+        status = R128_READ(R128_GEN_INT_STATUS);
+
+        /* VBLANK interrupt */
+        if (status & R128_CRTC_VBLANK_INT) {
+                R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK);
+                atomic_inc(&dev->vbl_received);
+                DRM_WAKEUP(&dev->vbl_queue);
+                drm_vbl_send_signals(dev);
+                return IRQ_HANDLED;
+        }
+        return IRQ_NONE;
+}
+
+int r128_driver_vblank_wait(struct drm_device * dev, unsigned int *sequence)
+{
+        unsigned int cur_vblank;
+        int ret = 0;
+
+        /* Assume that the user has missed the current sequence number
+         * by about a day rather than she wants to wait for years
+         * using vertical blanks...
+         */
+        DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
+                    (((cur_vblank = atomic_read(&dev->vbl_received))
+                      - *sequence) <= (1 << 23)));
+
+        *sequence = cur_vblank;
+
+        return ret;
+}
+
+void r128_driver_irq_preinstall(struct drm_device * dev)
+{
+        drm_r128_private_t *dev_priv = (drm_r128_private_t *) dev->dev_private;
+
+        /* Disable *all* interrupts */
+        R128_WRITE(R128_GEN_INT_CNTL, 0);
+        /* Clear vblank bit if it's already high */
+        R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK);
+}
+
+void r128_driver_irq_postinstall(struct drm_device * dev)
+{
+        drm_r128_private_t *dev_priv = (drm_r128_private_t *) dev->dev_private;
+
+        /* Turn on VBL interrupt */
+        R128_WRITE(R128_GEN_INT_CNTL, R128_CRTC_VBLANK_INT_EN);
+}
+
+void r128_driver_irq_uninstall(struct drm_device * dev)
+{
+        drm_r128_private_t *dev_priv = (drm_r128_private_t *) dev->dev_private;
+        if (!dev_priv)
+                return;
+
+        /* Disable *all* interrupts */
+        R128_WRITE(R128_GEN_INT_CNTL, 0);
+}