gpu/drm/drm_edid.c

3085 static bool is_display_descriptor(const struct detailed_timing *descriptor, u8 type)
3087 	BUILD_BUG_ON(offsetof(typeof(*descriptor), pixel_clock) != 0);
3088 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.pad1) != 2);
3089 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.type) != 3);
3091 	return descriptor->pixel_clock == 0 &&
3092 		descriptor->data.other_data.pad1 == 0 &&
3093 		descriptor->data.other_data.type == type;
3096 static bool is_detailed_timing_descriptor(const struct detailed_timing *descriptor)
3098 	BUILD_BUG_ON(offsetof(typeof(*descriptor), pixel_clock) != 0);
3100 	return descriptor->pixel_clock != 0;
3163 is_rb(const struct detailed_timing *descriptor, void *data)
3167 	if (!is_display_descriptor(descriptor, EDID_DETAIL_MONITOR_RANGE))
3170 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.flags) != 10);
3171 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.formula.cvt.flags) != 15);
3173 	if (descriptor->data.other_data.data.range.flags == DRM_EDID_CVT_SUPPORT_FLAG &&
3174 	    descriptor->data.other_data.data.range.formula.cvt.flags & DRM_EDID_CVT_FLAGS_REDUCED_BLANKING)
3193 find_gtf2(const struct detailed_timing *descriptor, void *data)
3197 	if (!is_display_descriptor(descriptor, EDID_DETAIL_MONITOR_RANGE))
3200 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.flags) != 10);
3202 	if (descriptor->data.other_data.data.range.flags == DRM_EDID_SECONDARY_GTF_SUPPORT_FLAG)
3203 		*res = descriptor;
3210 	const struct detailed_timing *descriptor = NULL;
3212 	drm_for_each_detailed_block(drm_edid, find_gtf2, &descriptor);
3214 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.formula.gtf2.hfreq_start_khz) != 12);
3216 	return descriptor ? descriptor->data.other_data.data.range.formula.gtf2.hfreq_start_khz * 2 : 0;
3222 	const struct detailed_timing *descriptor = NULL;
3224 	drm_for_each_detailed_block(drm_edid, find_gtf2, &descriptor);
3226 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.formula.gtf2.c) != 13);
3228 	return descriptor ? descriptor->data.other_data.data.range.formula.gtf2.c : 0;
3234 	const struct detailed_timing *descriptor = NULL;
3236 	drm_for_each_detailed_block(drm_edid, find_gtf2, &descriptor);
3238 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.formula.gtf2.m) != 14);
3240 	return descriptor ? le16_to_cpu(descriptor->data.other_data.data.range.formula.gtf2.m) : 0;
3246 	const struct detailed_timing *descriptor = NULL;
3248 	drm_for_each_detailed_block(drm_edid, find_gtf2, &descriptor);
3250 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.formula.gtf2.k) != 16);
3252 	return descriptor ? descriptor->data.other_data.data.range.formula.gtf2.k : 0;
3258 	const struct detailed_timing *descriptor = NULL;
3260 	drm_for_each_detailed_block(drm_edid, find_gtf2, &descriptor);
3262 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.formula.gtf2.j) != 17);
3264 	return descriptor ? descriptor->data.other_data.data.range.formula.gtf2.j : 0;
3268 get_timing_level(const struct detailed_timing *descriptor, void *data)
3272 	if (!is_display_descriptor(descriptor, EDID_DETAIL_MONITOR_RANGE))
3275 	BUILD_BUG_ON(offsetof(typeof(*descriptor), data.other_data.data.range.flags) != 10);
3277 	switch (descriptor->data.other_data.data.range.flags) {
3299 		 * If the range descriptor doesn't
6493 	 * of the range descriptor seems to guarantee that
6497 	 * range descriptor are not accepted here.