drm/i915/display: remove the display platform enum as unnecessary

The display platform enums are not really needed for anything. Remove.

Without the enum, PLATFORM_UNINITIALIZED is also no longer needed for
keeping the first enum 0. Also need to switch from sp->subplatform to
sp->pciidlist as the check for array end.

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/d20966f1d7a69a1e66768110b427be2fc611bcd2.1730144869.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>

2 files changed, 3 insertions, 21 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/gpu/drm/i915/display/intel_display_device.c
index 3ed44aeb374b..ea886a1b2c09 100644
--- a/drivers/gpu/drm/i915/display/intel_display_device.c
+++ b/drivers/gpu/drm/i915/display/intel_display_device.c
@@ -33,7 +33,6 @@ struct stepping_desc {
 
 struct subplatform_desc {
 	struct intel_display_platforms platforms;
-	enum intel_display_platform subplatform;
 	const char *name;
 	const u16 *pciidlist;
 	struct stepping_desc step_info;
@@ -41,12 +40,10 @@ struct subplatform_desc {
 
 #define SUBPLATFORM(_platform, _subplatform)				\
 	.platforms._platform##_##_subplatform = 1,			\
-	.subplatform = (INTEL_DISPLAY_##_platform##_##_subplatform),	\
 	.name = #_subplatform
 
 struct platform_desc {
 	struct intel_display_platforms platforms;
-	enum intel_display_platform platform;
 	const char *name;
 	const struct subplatform_desc *subplatforms;
 	const struct intel_display_device_info *info; /* NULL for GMD ID */
@@ -55,7 +52,6 @@ struct platform_desc {
 
 #define PLATFORM(_platform)			 \
 	.platforms._platform = 1,		 \
-	.platform = (INTEL_DISPLAY_##_platform), \
 	.name = #_platform
 
 #define ID(id) (id)
@@ -1467,7 +1463,7 @@ find_subplatform_desc(struct pci_dev *pdev, const struct platform_desc *desc)
 	const struct subplatform_desc *sp;
 	const u16 *id;
 
-	for (sp = desc->subplatforms; sp && sp->subplatform; sp++)
+	for (sp = desc->subplatforms; sp && sp->pciidlist; sp++)
 		for (id = sp->pciidlist; *id; id++)
 			if (*id == pdev->device)
 				return sp;
@@ -1584,17 +1580,15 @@ void intel_display_device_probe(struct drm_i915_private *i915)
 	       &DISPLAY_INFO(i915)->__runtime_defaults,
 	       sizeof(*DISPLAY_RUNTIME_INFO(i915)));
 
-	drm_WARN_ON(&i915->drm, !desc->platform || !desc->name ||
+	drm_WARN_ON(&i915->drm, !desc->name ||
 		    !display_platforms_weight(&desc->platforms));
-	DISPLAY_RUNTIME_INFO(i915)->platform = desc->platform;
 
 	display->platform = desc->platforms;
 
 	subdesc = find_subplatform_desc(pdev, desc);
 	if (subdesc) {
-		drm_WARN_ON(&i915->drm, !subdesc->subplatform || !subdesc->name ||
+		drm_WARN_ON(&i915->drm, !subdesc->name ||
 			    !display_platforms_weight(&subdesc->platforms));
-		DISPLAY_RUNTIME_INFO(i915)->subplatform = subdesc->subplatform;
 
 		display_platforms_or(&display->platform, &subdesc->platforms);
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_device.h b/drivers/gpu/drm/i915/display/intel_display_device.h
index 17db88ba97f5..71944d183401 100644
--- a/drivers/gpu/drm/i915/display/intel_display_device.h
+++ b/drivers/gpu/drm/i915/display/intel_display_device.h
@@ -21,7 +21,6 @@ struct drm_printer;
  * platform.
  */
 #define INTEL_DISPLAY_PLATFORMS(func) \
-	func(PLATFORM_UNINITIALIZED) \
 	/* Display ver 2 */ \
 	func(i830) \
 	func(i845g) \
@@ -99,14 +98,6 @@ struct drm_printer;
 	/* Display ver 30 (based on GMD ID) */ \
 	func(pantherlake)
 
-#define __ENUM(x) INTEL_DISPLAY_ ## x,
-
-enum intel_display_platform {
-	INTEL_DISPLAY_PLATFORMS(__ENUM)
-};
-
-#undef __ENUM
-
 #define __MEMBER(name) unsigned long name:1;
 #define __COUNT(x) 1 +
 
@@ -234,9 +225,6 @@ struct intel_display_platforms {
 	 INTEL_DISPLAY_STEP(__i915) >= (since) && INTEL_DISPLAY_STEP(__i915) < (until))
 
 struct intel_display_runtime_info {
-	enum intel_display_platform platform;
-	enum intel_display_platform subplatform;
-
 	struct intel_display_ip_ver {
 		u16 ver;
 		u16 rel;