[PATCH 07/10] drm/i915: extract i915_suspend.h from i915_drv.h

[Jani Nikula <jani.nikula@intel.com>]

It used to be handy that we only had a couple of headers, but over time
i915_drv.h has become unwieldy. Extract declarations to a separate
header file corresponding to the implementation module, clarifying the
modularity of the driver.

Ensure the new header is self-contained, and do so with minimal further
includes, using forward declarations as needed. Include the new header
only where needed, and sort the modified include directives while at it
and as needed.

No functional changes.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c     |  1 +
 drivers/gpu/drm/i915/i915_drv.h     |  4 ----
 drivers/gpu/drm/i915/i915_suspend.c |  1 +
 drivers/gpu/drm/i915/i915_suspend.h | 14 ++++++++++++++
 4 files changed, 16 insertions(+), 4 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/i915_suspend.h

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6621da4f4f18..6af31a4d9308 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -70,6 +70,7 @@
 #include "i915_irq.h"
 #include "i915_perf.h"
 #include "i915_query.h"
+#include "i915_suspend.h"
 #include "i915_sysfs.h"
 #include "i915_trace.h"
 #include "i915_vgpu.h"
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b9f6c443ef7c..f3118bd1d751 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2498,10 +2498,6 @@ int intel_engine_cmd_parser(struct intel_engine_cs *engine,
 			    u32 batch_len,
 			    bool is_master);
 
-/* i915_suspend.c */
-int i915_save_state(struct drm_i915_private *dev_priv);
-int i915_restore_state(struct drm_i915_private *dev_priv);
-
 /* intel_device_info.c */
 static inline struct intel_device_info *
 mkwrite_device_info(struct drm_i915_private *dev_priv)
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index e41cf73a9737..8508a01ad8b9 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -31,6 +31,7 @@
 
 #include "i915_drv.h"
 #include "i915_reg.h"
+#include "i915_suspend.h"
 
 static void i915_save_display(struct drm_i915_private *dev_priv)
 {
diff --git a/drivers/gpu/drm/i915/i915_suspend.h b/drivers/gpu/drm/i915/i915_suspend.h
new file mode 100644
index 000000000000..3a36fb4ecc05
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_suspend.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef __I915_SUSPEND_H__
+#define __I915_SUSPEND_H__
+
+struct drm_i915_private;
+
+int i915_save_state(struct drm_i915_private *i915);
+int i915_restore_state(struct drm_i915_private *i915);
+
+#endif /* __I915_SUSPEND_H__ */
-- 
2.20.1

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