Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 118 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 000000000..d84e9c96e
--- /dev/null
+++ b/drivers/gpu/drm/r128/r128_irq.c
@@ -0,0 +1,118 @@
+/* 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 <drm/drm_device.h>
+#include <drm/drm_print.h>
+#include <drm/drm_vblank.h>
+#include <drm/r128_drm.h>
+
+#include "r128_drv.h"
+
+u32 r128_get_vblank_counter(struct drm_device *dev, unsigned int pipe)
+{
+	const drm_r128_private_t *dev_priv = dev->dev_private;
+
+	if (pipe != 0)
+		return 0;
+
+	return atomic_read(&dev_priv->vbl_received);
+}
+
+irqreturn_t r128_driver_irq_handler(int irq, void *arg)
+{
+	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_priv->vbl_received);
+		drm_handle_vblank(dev, 0);
+		return IRQ_HANDLED;
+	}
+	return IRQ_NONE;
+}
+
+int r128_enable_vblank(struct drm_device *dev, unsigned int pipe)
+{
+	drm_r128_private_t *dev_priv = dev->dev_private;
+
+	if (pipe != 0) {
+		DRM_ERROR("%s:  bad crtc %u\n", __func__, pipe);
+		return -EINVAL;
+	}
+
+	R128_WRITE(R128_GEN_INT_CNTL, R128_CRTC_VBLANK_INT_EN);
+	return 0;
+}
+
+void r128_disable_vblank(struct drm_device *dev, unsigned int pipe)
+{
+	if (pipe != 0)
+		DRM_ERROR("%s:  bad crtc %u\n", __func__, pipe);
+
+	/*
+	 * FIXME: implement proper interrupt disable by using the vblank
+	 * counter register (if available)
+	 *
+	 * R128_WRITE(R128_GEN_INT_CNTL,
+	 *            R128_READ(R128_GEN_INT_CNTL) & ~R128_CRTC_VBLANK_INT_EN);
+	 */
+}
+
+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);
+}
+
+int r128_driver_irq_postinstall(struct drm_device *dev)
+{
+	return 0;
+}
+
+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);
+}