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drm/i915/display: add display platforms structure with platform members

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Add a structure with a bitfield member for each platform and
subplatform, and initialize them in platform and subplatform descs.

The structure also contains a bitmap in a union for easier manipulation
of the bits. This, in turn, requires a bit of trickery with
INTEL_DISPLAY_PLATFORMS() to count the number of bits required for
DECLARE_BITMAP().

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/bf1d828cd333d34862ad3198e282c9d294c6e1ad.1730144869.git.jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula
2024-10-28 21:48:39 +02:00
parent 8cbbc37de4
commit c27cce227e
2 changed files with 23 additions and 0 deletions
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4
drivers/gpu/drm/i915/display/intel_display_device.c
View File

@@ -32,6 +32,7 @@ struct stepping_desc {
.step_info.size = ARRAY_SIZE(_map)
struct subplatform_desc {
struct intel_display_platforms platforms;
enum intel_display_platform subplatform;
const char *name;
const u16 *pciidlist;
@@ -39,10 +40,12 @@ 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;
@@ -51,6 +54,7 @@ struct platform_desc {
};
#define PLATFORM(_platform) \
.platforms._platform = 1, \
.platform = (INTEL_DISPLAY_##_platform), \
.name = #_platform

19
drivers/gpu/drm/i915/display/intel_display_device.h
View File

@@ -6,6 +6,7 @@
#ifndef __INTEL_DISPLAY_DEVICE_H__
#define __INTEL_DISPLAY_DEVICE_H__
#include <linux/bitops.h>
#include <linux/types.h>
#include "intel_display_conversion.h"
@@ -106,6 +107,24 @@ enum intel_display_platform {
#undef __ENUM
#define __MEMBER(name) unsigned long name:1;
#define __COUNT(x) 1 +
#define __NUM_PLATFORMS (INTEL_DISPLAY_PLATFORMS(__COUNT) 0)
struct intel_display_platforms {
union {
struct {
INTEL_DISPLAY_PLATFORMS(__MEMBER);
};
DECLARE_BITMAP(bitmap, __NUM_PLATFORMS);
};
};
#undef __MEMBER
#undef __COUNT
#undef __NUM_PLATFORMS
#define DEV_INFO_DISPLAY_FOR_EACH_FLAG(func) \
/* Keep in alphabetical order */ \
func(cursor_needs_physical); \