Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 124 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
new file mode 100644
index 000000000..81def10eb
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -0,0 +1,124 @@
+/*
+ *
+ * Copyright 2008 (c) Intel Corporation
+ *   Jesse Barnes <jbarnes@virtuousgeek.org>
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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.
+ */
+
+#include "display/intel_de.h"
+#include "display/intel_gmbus.h"
+#include "display/intel_vga.h"
+
+#include "i915_drv.h"
+#include "i915_reg.h"
+#include "i915_suspend.h"
+#include "intel_pci_config.h"
+
+static void intel_save_swf(struct drm_i915_private *dev_priv)
+{
+	int i;
+
+	/* Scratch space */
+	if (GRAPHICS_VER(dev_priv) == 2 && IS_MOBILE(dev_priv)) {
+		for (i = 0; i < 7; i++) {
+			dev_priv->regfile.saveSWF0[i] = intel_de_read(dev_priv, SWF0(i));
+			dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv, SWF1(i));
+		}
+		for (i = 0; i < 3; i++)
+			dev_priv->regfile.saveSWF3[i] = intel_de_read(dev_priv, SWF3(i));
+	} else if (GRAPHICS_VER(dev_priv) == 2) {
+		for (i = 0; i < 7; i++)
+			dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv, SWF1(i));
+	} else if (HAS_GMCH(dev_priv)) {
+		for (i = 0; i < 16; i++) {
+			dev_priv->regfile.saveSWF0[i] = intel_de_read(dev_priv, SWF0(i));
+			dev_priv->regfile.saveSWF1[i] = intel_de_read(dev_priv, SWF1(i));
+		}
+		for (i = 0; i < 3; i++)
+			dev_priv->regfile.saveSWF3[i] = intel_de_read(dev_priv, SWF3(i));
+	}
+}
+
+static void intel_restore_swf(struct drm_i915_private *dev_priv)
+{
+	int i;
+
+	/* Scratch space */
+	if (GRAPHICS_VER(dev_priv) == 2 && IS_MOBILE(dev_priv)) {
+		for (i = 0; i < 7; i++) {
+			intel_de_write(dev_priv, SWF0(i), dev_priv->regfile.saveSWF0[i]);
+			intel_de_write(dev_priv, SWF1(i), dev_priv->regfile.saveSWF1[i]);
+		}
+		for (i = 0; i < 3; i++)
+			intel_de_write(dev_priv, SWF3(i), dev_priv->regfile.saveSWF3[i]);
+	} else if (GRAPHICS_VER(dev_priv) == 2) {
+		for (i = 0; i < 7; i++)
+			intel_de_write(dev_priv, SWF1(i), dev_priv->regfile.saveSWF1[i]);
+	} else if (HAS_GMCH(dev_priv)) {
+		for (i = 0; i < 16; i++) {
+			intel_de_write(dev_priv, SWF0(i), dev_priv->regfile.saveSWF0[i]);
+			intel_de_write(dev_priv, SWF1(i), dev_priv->regfile.saveSWF1[i]);
+		}
+		for (i = 0; i < 3; i++)
+			intel_de_write(dev_priv, SWF3(i), dev_priv->regfile.saveSWF3[i]);
+	}
+}
+
+void i915_save_display(struct drm_i915_private *dev_priv)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	/* Display arbitration control */
+	if (GRAPHICS_VER(dev_priv) <= 4)
+		dev_priv->regfile.saveDSPARB = intel_de_read(dev_priv, DSPARB);
+
+	if (GRAPHICS_VER(dev_priv) == 4)
+		pci_read_config_word(pdev, GCDGMBUS,
+				     &dev_priv->regfile.saveGCDGMBUS);
+
+	intel_save_swf(dev_priv);
+}
+
+void i915_restore_display(struct drm_i915_private *dev_priv)
+{
+	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
+
+	if (!HAS_DISPLAY(dev_priv))
+		return;
+
+	intel_restore_swf(dev_priv);
+
+	if (GRAPHICS_VER(dev_priv) == 4)
+		pci_write_config_word(pdev, GCDGMBUS,
+				      dev_priv->regfile.saveGCDGMBUS);
+
+	/* Display arbitration */
+	if (GRAPHICS_VER(dev_priv) <= 4)
+		intel_de_write(dev_priv, DSPARB, dev_priv->regfile.saveDSPARB);
+
+	intel_vga_redisable(dev_priv);
+
+	intel_gmbus_reset(dev_priv);
+}