[Intel-gfx] [PATCH 1/3] drm/i915: Introduct i915_platforms.h

[Tvrtko Ursulin]

From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

Inspired by the same approach used by Chris Wilson in the self
test patches.

We add a separate header file containing the list of our
platforms and then use the pre-processor to generate all
other places which use that list. This avoids having to
list them multiple times and avoids the maintenance
burden.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Jani Nikula <jani.nikula at intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_drv.h          | 30 +++-------------------------
 drivers/gpu/drm/i915/i915_platforms.h    | 34 ++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_device_info.c | 30 +++-------------------------
 3 files changed, 40 insertions(+), 54 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/i915_platforms.h

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 1480e733312a..ea06d3ff59da 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -825,34 +825,10 @@ static inline unsigned int sseu_subslice_total(const struct sseu_dev_info *sseu)
 	return hweight8(sseu->slice_mask) * hweight8(sseu->subslice_mask);
 }
 
-/* Keep in gen based order, and chronological order within a gen */
 enum intel_platform {
-	INTEL_PLATFORM_UNINITIALIZED = 0,
-	INTEL_I830,
-	INTEL_I845G,
-	INTEL_I85X,
-	INTEL_I865G,
-	INTEL_I915G,
-	INTEL_I915GM,
-	INTEL_I945G,
-	INTEL_I945GM,
-	INTEL_G33,
-	INTEL_PINEVIEW,
-	INTEL_I965G,
-	INTEL_I965GM,
-	INTEL_G45,
-	INTEL_GM45,
-	INTEL_IRONLAKE,
-	INTEL_SANDYBRIDGE,
-	INTEL_IVYBRIDGE,
-	INTEL_VALLEYVIEW,
-	INTEL_HASWELL,
-	INTEL_BROADWELL,
-	INTEL_CHERRYVIEW,
-	INTEL_SKYLAKE,
-	INTEL_BROXTON,
-	INTEL_KABYLAKE,
-	INTEL_GEMINILAKE,
+#define i915_platform(name, value) INTEL_##name = value,
+#include "i915_platforms.h"
+#undef i915_platform
 };
 
 struct intel_device_info {
diff --git a/drivers/gpu/drm/i915/i915_platforms.h b/drivers/gpu/drm/i915/i915_platforms.h
new file mode 100644
index 000000000000..b44ea1dd9c15
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_platforms.h
@@ -0,0 +1,34 @@
+/*
+ * List each platform as i915_platform(name, id).
+ *
+ * Names must be legal C identifiers and the ids must be unique integers.
+ *
+ * Keep in gen based order, and chronological order within a gen.
+ */
+
+i915_platform(UNINITIALIZED,  0)
+i915_platform(I830,	      1)
+i915_platform(I845G,	      2)
+i915_platform(I85X,	      3)
+i915_platform(I865G,	      4)
+i915_platform(I915G,	      5)
+i915_platform(I915GM,	      6)
+i915_platform(I945G,	      7)
+i915_platform(I945GM,	      8)
+i915_platform(G33,	      9)
+i915_platform(PINEVIEW,	     10)
+i915_platform(I965G,	     11)
+i915_platform(I965GM,	     12)
+i915_platform(G45,	     13)
+i915_platform(GM45,	     14)
+i915_platform(IRONLAKE,	     15)
+i915_platform(SANDYBRIDGE,   16)
+i915_platform(IVYBRIDGE,     17)
+i915_platform(VALLEYVIEW,    18)
+i915_platform(HASWELL,	     19)
+i915_platform(BROADWELL,     20)
+i915_platform(CHERRYVIEW,    21)
+i915_platform(SKYLAKE,	     22)
+i915_platform(BROXTON,	     23)
+i915_platform(KABYLAKE,	     24)
+i915_platform(GEMINILAKE,    25)
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index c46415b8c1b9..5192d388d10e 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -24,35 +24,11 @@
 
 #include "i915_drv.h"
 
-#define PLATFORM_NAME(x) [INTEL_##x] = #x
 static const char * const platform_names[] = {
-	PLATFORM_NAME(I830),
-	PLATFORM_NAME(I845G),
-	PLATFORM_NAME(I85X),
-	PLATFORM_NAME(I865G),
-	PLATFORM_NAME(I915G),
-	PLATFORM_NAME(I915GM),
-	PLATFORM_NAME(I945G),
-	PLATFORM_NAME(I945GM),
-	PLATFORM_NAME(G33),
-	PLATFORM_NAME(PINEVIEW),
-	PLATFORM_NAME(I965G),
-	PLATFORM_NAME(I965GM),
-	PLATFORM_NAME(G45),
-	PLATFORM_NAME(GM45),
-	PLATFORM_NAME(IRONLAKE),
-	PLATFORM_NAME(SANDYBRIDGE),
-	PLATFORM_NAME(IVYBRIDGE),
-	PLATFORM_NAME(VALLEYVIEW),
-	PLATFORM_NAME(HASWELL),
-	PLATFORM_NAME(BROADWELL),
-	PLATFORM_NAME(CHERRYVIEW),
-	PLATFORM_NAME(SKYLAKE),
-	PLATFORM_NAME(BROXTON),
-	PLATFORM_NAME(KABYLAKE),
-	PLATFORM_NAME(GEMINILAKE),
+#define i915_platform(name, id) [id] = #name,
+#include "i915_platforms.h"
+#undef i915_platform
 };
-#undef PLATFORM_NAME
 
 const char *intel_platform_name(enum intel_platform platform)
 {
-- 
2.7.4