47 #define version_greater(edid, maj, min) \  argument
48 	(((edid)->version > (maj)) || \
49 	 ((edid)->version == (maj) && (edid)->revision > (min)))
91 	struct edid *edid;  member
1625 bool drm_edid_are_equal(const struct edid *edid1, const struct edid *edid2)  in drm_edid_are_equal()
1665 	struct edid *edid = (struct edid *)raw_edid;  in drm_edid_block_valid()  local
1716 		if (edid->version != 1) {  in drm_edid_block_valid()
1717 			DRM_NOTE("EDID has major version %d, instead of 1\n", edid->version);  in drm_edid_block_valid()
1721 		if (edid->revision > 4)  in drm_edid_block_valid()
1754 bool drm_edid_is_valid(struct edid *edid)  in drm_edid_is_valid()  argument
1757 	u8 *raw = (u8 *)edid;  in drm_edid_is_valid()
1759 	if (!edid)  in drm_edid_is_valid()
1762 	for (i = 0; i <= edid->extensions; i++)  in drm_edid_is_valid()
1835 			       u8 *edid, int num_blocks)  in connector_bad_edid()  argument
1846 	last_block = edid[0x7e];  in connector_bad_edid()
1851 			drm_edid_block_checksum(edid + last_block * EDID_LENGTH);  in connector_bad_edid()
1858 		u8 *block = edid + i * EDID_LENGTH;  in connector_bad_edid()
1875 static struct edid *drm_get_override_edid(struct drm_connector *connector)  in drm_get_override_edid()
1877 	struct edid *override = NULL;  in drm_get_override_edid()
1901 	struct edid *override;  in drm_add_override_edid_modes()
1953 static int edid_hfeeodb_extension_block_count(const struct edid *edid)  in edid_hfeeodb_extension_block_count()  argument
1958 	if (!edid->extensions)  in edid_hfeeodb_extension_block_count()
1962 	cta = (u8 *)edid + EDID_LENGTH * 1;  in edid_hfeeodb_extension_block_count()
1981 static int edid_hfeeodb_block_count(const struct edid *edid)  in edid_hfeeodb_block_count()  argument
1983 	int eeodb = edid_hfeeodb_extension_block_count(edid);  in edid_hfeeodb_block_count()
2008 struct edid *drm_do_get_edid(struct drm_connector *connector,  in drm_do_get_edid()
2014 	u8 *edid, *new;  in drm_do_get_edid()  local
2015 	struct edid *override;  in drm_do_get_edid()
2021 	edid = kmalloc(EDID_LENGTH, GFP_KERNEL);  in drm_do_get_edid()
2022 	if (!edid)  in drm_do_get_edid()
2027 		if (get_edid_block(data, edid, 0, EDID_LENGTH))  in drm_do_get_edid()
2029 		if (drm_edid_block_valid(edid, 0, false,  in drm_do_get_edid()
2032 		if (i == 0 && drm_edid_is_zero(edid, EDID_LENGTH)) {  in drm_do_get_edid()
2041 	valid_extensions = edid[0x7e];  in drm_do_get_edid()
2043 		return (struct edid *)edid;  in drm_do_get_edid()
2045 	new = krealloc(edid, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL);  in drm_do_get_edid()
2048 	edid = new;  in drm_do_get_edid()
2050 	num_blocks = edid[0x7e] + 1;  in drm_do_get_edid()
2053 		u8 *block = edid + j * EDID_LENGTH;  in drm_do_get_edid()
2075 			int eeodb = edid_hfeeodb_block_count((const struct edid *)edid);  in drm_do_get_edid()
2079 				new = krealloc(edid, num_blocks * EDID_LENGTH, GFP_KERNEL);  in drm_do_get_edid()
2082 				edid = new;  in drm_do_get_edid()
2090 		connector_bad_edid(connector, edid, edid[0x7e] + 1);  in drm_do_get_edid()
2098 		for (i = 0; i <= edid[0x7e]; i++) {  in drm_do_get_edid()
2099 			u8 *block = edid + i * EDID_LENGTH;  in drm_do_get_edid()
2111 		kfree(edid);  in drm_do_get_edid()
2112 		edid = new;  in drm_do_get_edid()
2115 	return (struct edid *)edid;  in drm_do_get_edid()
2118 	kfree(edid);  in drm_do_get_edid()
2122 struct edid *drm_do_get_edid(struct drm_connector *connector,  in drm_do_get_edid()
2128 	u8 *edid, *new;  in drm_do_get_edid()  local
2129 	struct edid *override;  in drm_do_get_edid()
2135 	if ((edid = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)  in drm_do_get_edid()
2140 		if (get_edid_block(data, edid, 0, EDID_LENGTH))  in drm_do_get_edid()
2142 		if (drm_edid_block_valid(edid, 0, false,  in drm_do_get_edid()
2145 		if (i == 0 && drm_edid_is_zero(edid, EDID_LENGTH)) {  in drm_do_get_edid()
2154 	valid_extensions = edid[0x7e];  in drm_do_get_edid()
2156 		return (struct edid *)edid;  in drm_do_get_edid()
2158 	new = krealloc(edid, (valid_extensions + 1) * EDID_LENGTH, GFP_KERNEL);  in drm_do_get_edid()
2161 	edid = new;  in drm_do_get_edid()
2163 	for (j = 1; j <= edid[0x7e]; j++) {  in drm_do_get_edid()
2164 		u8 *block = edid + j * EDID_LENGTH;  in drm_do_get_edid()
2177 	if (valid_extensions != edid[0x7e]) {  in drm_do_get_edid()
2180 		connector_bad_edid(connector, edid, edid[0x7e] + 1);  in drm_do_get_edid()
2188 		for (i = 0; i <= edid[0x7e]; i++) {  in drm_do_get_edid()
2189 			u8 *block = edid + i * EDID_LENGTH;  in drm_do_get_edid()
2201 		kfree(edid);  in drm_do_get_edid()
2202 		edid = new;  in drm_do_get_edid()
2205 	return (struct edid *)edid;  in drm_do_get_edid()
2208 	connector_bad_edid(connector, edid, 1);  in drm_do_get_edid()
2210 	kfree(edid);  in drm_do_get_edid()
2241 struct edid *drm_get_edid(struct drm_connector *connector,  in drm_get_edid()
2244 	struct edid *edid;  in drm_get_edid()  local
2252 	edid = drm_do_get_edid(connector, drm_do_probe_ddc_edid, adapter);  in drm_get_edid()
2253 	drm_connector_update_edid_property(connector, edid);  in drm_get_edid()
2254 	return edid;  in drm_get_edid()
2269 struct edid *drm_get_edid_switcheroo(struct drm_connector *connector,  in drm_get_edid_switcheroo()
2273 	struct edid *edid;  in drm_get_edid_switcheroo()  local
2276 	edid = drm_get_edid(connector, adapter);  in drm_get_edid_switcheroo()
2279 	return edid;  in drm_get_edid_switcheroo()
2289 struct edid *drm_edid_duplicate(const struct edid *edid)  in drm_edid_duplicate()  argument
2291 	return kmemdup(edid, (edid->extensions + 1) * EDID_LENGTH, GFP_KERNEL);  in drm_edid_duplicate()
2304 static bool edid_vendor(const struct edid *edid, const char *vendor)  in edid_vendor()  argument
2308 	edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@';  in edid_vendor()
2309 	edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) |  in edid_vendor()
2310 			  ((edid->mfg_id[1] & 0xe0) >> 5)) + '@';  in edid_vendor()
2311 	edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@';  in edid_vendor()
2322 static u32 edid_get_quirks(const struct edid *edid)  in edid_get_quirks()  argument
2330 		if (edid_vendor(edid, quirk->vendor) &&  in edid_get_quirks()
2331 		    (EDID_PRODUCT_ID(edid) == quirk->product_id))  in edid_get_quirks()
2481 	struct edid *edid = (struct edid *)raw_edid;  in drm_for_each_detailed_block()  local
2483 	if (edid == NULL)  in drm_for_each_detailed_block()
2487 		cb(&(edid->detailed_timings[i]), closure);  in drm_for_each_detailed_block()
2519 drm_monitor_supports_rb(struct edid *edid)  in drm_monitor_supports_rb()  argument
2521 	if (edid->revision >= 4) {  in drm_monitor_supports_rb()
2524 		drm_for_each_detailed_block((u8 *)edid, is_rb, &ret);  in drm_monitor_supports_rb()
2528 	return ((edid->input & DRM_EDID_INPUT_DIGITAL) != 0);  in drm_monitor_supports_rb()
2545 drm_gtf2_hbreak(struct edid *edid)  in drm_gtf2_hbreak()  argument
2549 	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);  in drm_gtf2_hbreak()
2554 drm_gtf2_2c(struct edid *edid)  in drm_gtf2_2c()  argument
2558 	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);  in drm_gtf2_2c()
2563 drm_gtf2_m(struct edid *edid)  in drm_gtf2_m()  argument
2567 	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);  in drm_gtf2_m()
2572 drm_gtf2_k(struct edid *edid)  in drm_gtf2_k()  argument
2576 	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);  in drm_gtf2_k()
2581 drm_gtf2_2j(struct edid *edid)  in drm_gtf2_2j()  argument
2585 	drm_for_each_detailed_block((u8 *)edid, find_gtf2, &r);  in drm_gtf2_2j()
2593 static int standard_timing_level(struct edid *edid)  in standard_timing_level()  argument
2595 	if (edid->revision >= 2) {  in standard_timing_level()
2596 		if (edid->revision >= 4 && (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF))  in standard_timing_level()
2598 		if (drm_gtf2_hbreak(edid))  in standard_timing_level()
2600 		if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)  in standard_timing_level()
2636 drm_mode_std(struct drm_connector *connector, struct edid *edid,  in drm_mode_std()  argument
2647 	int timing_level = standard_timing_level(edid);  in drm_mode_std()
2658 		if (edid->revision < 3)  in drm_mode_std()
2701 	if (drm_monitor_supports_rb(edid)) {  in drm_mode_std()
2727 		if (drm_mode_hsync(mode) > drm_gtf2_hbreak(edid)) {  in drm_mode_std()
2731 						    drm_gtf2_m(edid),  in drm_mode_std()
2732 						    drm_gtf2_2c(edid),  in drm_mode_std()
2733 						    drm_gtf2_k(edid),  in drm_mode_std()
2734 						    drm_gtf2_2j(edid));  in drm_mode_std()
2798 						  struct edid *edid,  in drm_mode_detailed()  argument
2886 		mode->width_mm = edid->width_cm * 10;  in drm_mode_detailed()
2887 		mode->height_mm = edid->height_cm * 10;  in drm_mode_detailed()
2898 		    struct edid *edid, u8 *t)  in mode_in_hsync_range()  argument
2903 	if (edid->revision >= 4)  in mode_in_hsync_range()
2906 	if (edid->revision >= 4)  in mode_in_hsync_range()
2915 		    struct edid *edid, u8 *t)  in mode_in_vsync_range()  argument
2920 	if (edid->revision >= 4)  in mode_in_vsync_range()
2923 	if (edid->revision >= 4)  in mode_in_vsync_range()
2931 range_pixel_clock(struct edid *edid, u8 *t)  in range_pixel_clock()  argument
2938 	if (edid->revision >= 4 && t[10] == 0x04)  in range_pixel_clock()
2946 mode_in_range(const struct drm_display_mode *mode, struct edid *edid,  in mode_in_range()  argument
2952 	if (!mode_in_hsync_range(mode, edid, t))  in mode_in_range()
2955 	if (!mode_in_vsync_range(mode, edid, t))  in mode_in_range()
2958 	if ((max_clock = range_pixel_clock(edid, t)))  in mode_in_range()
2963 	if (edid->revision >= 4 && t[10] == 0x04)  in mode_in_range()
2967 	if (mode_is_rb(mode) && !drm_monitor_supports_rb(edid))  in mode_in_range()
2992 drm_dmt_modes_for_range(struct drm_connector *connector, struct edid *edid,  in drm_dmt_modes_for_range()  argument
3000 		if (mode_in_range(drm_dmt_modes + i, edid, timing) &&  in drm_dmt_modes_for_range()
3027 drm_gtf_modes_for_range(struct drm_connector *connector, struct edid *edid,  in drm_gtf_modes_for_range()  argument
3042 		if (!mode_in_range(newmode, edid, timing) ||  in drm_gtf_modes_for_range()
3056 drm_cvt_modes_for_range(struct drm_connector *connector, struct edid *edid,  in drm_cvt_modes_for_range()  argument
3062 	bool rb = drm_monitor_supports_rb(edid);  in drm_cvt_modes_for_range()
3072 		if (!mode_in_range(newmode, edid, timing) ||  in drm_cvt_modes_for_range()
3096 						  closure->edid,  in do_inferred_modes()
3099 	if (!version_greater(closure->edid, 1, 1))  in do_inferred_modes()
3106 							  closure->edid,  in do_inferred_modes()
3110 		if (!version_greater(closure->edid, 1, 3))  in do_inferred_modes()
3114 							  closure->edid,  in do_inferred_modes()
3124 add_inferred_modes(struct drm_connector *connector, struct edid *edid)  in add_inferred_modes()  argument
3128 		.edid = edid,  in add_inferred_modes()
3131 	if (version_greater(edid, 1, 0))  in add_inferred_modes()
3132 		drm_for_each_detailed_block((u8 *)edid, do_inferred_modes,  in add_inferred_modes()
3187 add_established_modes(struct drm_connector *connector, struct edid *edid)  in add_established_modes()  argument
3190 	unsigned long est_bits = edid->established_timings.t1 |  in add_established_modes()
3191 		(edid->established_timings.t2 << 8) |  in add_established_modes()
3192 		((edid->established_timings.mfg_rsvd & 0x80) << 9);  in add_established_modes()
3196 		.edid = edid,  in add_established_modes()
3211 	if (version_greater(edid, 1, 0))  in add_established_modes()
3212 		    drm_for_each_detailed_block((u8 *)edid,  in add_established_modes()
3224 	struct edid *edid = closure->edid;  in do_standard_modes()  local
3234 		newmode = drm_mode_std(connector, edid, std);  in do_standard_modes()
3251 add_standard_modes(struct drm_connector *connector, struct edid *edid)  in add_standard_modes()  argument
3256 		.edid = edid,  in add_standard_modes()
3262 		newmode = drm_mode_std(connector, edid,  in add_standard_modes()
3263 				       &edid->standard_timings[i]);  in add_standard_modes()
3270 	if (version_greater(edid, 1, 0))  in add_standard_modes()
3271 		drm_for_each_detailed_block((u8 *)edid, do_standard_modes,  in add_standard_modes()
3343 add_cvt_modes(struct drm_connector *connector, struct edid *edid)  in add_cvt_modes()  argument
3347 		.edid = edid,  in add_cvt_modes()
3350 	if (version_greater(edid, 1, 2))  in add_cvt_modes()
3351 		drm_for_each_detailed_block((u8 *)edid, do_cvt_mode, &closure);  in add_cvt_modes()
3370 				    closure->edid, timing,  in do_detailed_mode()
3397 add_detailed_modes(struct drm_connector *connector, struct edid *edid,  in add_detailed_modes()  argument
3402 		.edid = edid,  in add_detailed_modes()
3407 	if (closure.preferred && !version_greater(edid, 1, 3))  in add_detailed_modes()
3409 		    (edid->features & DRM_EDID_FEATURE_PREFERRED_TIMING);  in add_detailed_modes()
3411 	drm_for_each_detailed_block((u8 *)edid, do_detailed_mode, &closure);  in add_detailed_modes()
3434 static u8 *drm_find_edid_extension(const struct edid *edid,  in drm_find_edid_extension()  argument
3442 	if (edid == NULL || edid->extensions == 0)  in drm_find_edid_extension()
3445 	if (edid_hfeeodb_extension_block_count(edid))  in drm_find_edid_extension()
3446 		len = edid_hfeeodb_extension_block_count(edid);  in drm_find_edid_extension()
3448 		len = edid->extensions;  in drm_find_edid_extension()
3452 		edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1);  in drm_find_edid_extension()
3466 static u8 *drm_find_edid_extension(const struct edid *edid,  in drm_find_edid_extension()  argument
3473 	if (edid == NULL || edid->extensions == 0)  in drm_find_edid_extension()
3477 	for (i = *ext_index; i < edid->extensions; i++) {  in drm_find_edid_extension()
3478 		edid_ext = (u8 *)edid + EDID_LENGTH * (i + 1);  in drm_find_edid_extension()
3483 	if (i >= edid->extensions)  in drm_find_edid_extension()
3492 static u8 *drm_find_displayid_extension(const struct edid *edid,  in drm_find_displayid_extension()  argument
3496 	u8 *displayid = drm_find_edid_extension(edid, DISPLAYID_EXT, ext_index);  in drm_find_displayid_extension()
3517 static u8 *drm_find_cea_extension(const struct edid *edid)  in drm_find_cea_extension()  argument
3528 	cea = drm_find_edid_extension(edid, CEA_EXT, &ext_index);  in drm_find_cea_extension()
3535 		displayid = drm_find_displayid_extension(edid, &length, &idx,  in drm_find_cea_extension()
3809 add_alternate_cea_modes(struct drm_connector *connector, struct edid *edid)  in add_alternate_cea_modes()  argument
3817 	if (!drm_find_cea_extension(edid))  in add_alternate_cea_modes()
4489 add_cea_modes(struct drm_connector *connector, struct edid *edid)  in add_cea_modes()  argument
4497 	if (edid_hfeeodb_extension_block_count(edid))  in add_cea_modes()
4498 		count = edid_hfeeodb_extension_block_count(edid);  in add_cea_modes()
4500 		count = edid->extensions;  in add_cea_modes()
4505 		cea = drm_find_edid_extension(edid, CEA_EXT, &ext_index);  in add_cea_modes()
4549 add_cea_modes(struct drm_connector *connector, struct edid *edid)  in add_cea_modes()  argument
4551 	const u8 *cea = drm_find_cea_extension(edid);  in add_cea_modes()
4728 static int get_monitor_name(struct edid *edid, char name[13])  in get_monitor_name()  argument
4733 	if (!edid || !name)  in get_monitor_name()
4736 	drm_for_each_detailed_block((u8 *)edid, monitor_name, &edid_name);  in get_monitor_name()
4754 void drm_edid_get_monitor_name(struct edid *edid, char *name, int bufsize)  in drm_edid_get_monitor_name()  argument
4762 	name_length = min(get_monitor_name(edid, buf), bufsize - 1);  in drm_edid_get_monitor_name()
4788 static void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)  in drm_edid_to_eld()  argument
4799 	if (!edid)  in drm_edid_to_eld()
4802 	cea = drm_find_cea_extension(edid);  in drm_edid_to_eld()
4808 	mnl = get_monitor_name(edid, &eld[DRM_ELD_MONITOR_NAME_STRING]);  in drm_edid_to_eld()
4816 	eld[DRM_ELD_MANUFACTURER_NAME0] = edid->mfg_id[0];  in drm_edid_to_eld()
4817 	eld[DRM_ELD_MANUFACTURER_NAME1] = edid->mfg_id[1];  in drm_edid_to_eld()
4818 	eld[DRM_ELD_PRODUCT_CODE0] = edid->prod_code[0];  in drm_edid_to_eld()
4819 	eld[DRM_ELD_PRODUCT_CODE1] = edid->prod_code[1];  in drm_edid_to_eld()
4884 int drm_edid_to_sad(struct edid *edid, struct cea_sad **sads)  in drm_edid_to_sad()  argument
4890 	cea = drm_find_cea_extension(edid);  in drm_edid_to_sad()
4946 int drm_edid_to_speaker_allocation(struct edid *edid, u8 **sadb)  in drm_edid_to_speaker_allocation()  argument
4952 	cea = drm_find_cea_extension(edid);  in drm_edid_to_speaker_allocation()
5041 bool drm_detect_hdmi_monitor(struct edid *edid)  in drm_detect_hdmi_monitor()  argument
5047 	edid_ext = drm_find_cea_extension(edid);  in drm_detect_hdmi_monitor()
5079 bool drm_detect_monitor_audio(struct edid *edid)  in drm_detect_monitor_audio()  argument
5086 	edid_ext = drm_find_cea_extension(edid);  in drm_detect_monitor_audio()
5389 			      const struct edid *edid)  in drm_parse_cea_ext()  argument
5395 	edid_ext = drm_find_cea_extension(edid);  in drm_parse_cea_ext()
5453 			   const struct edid *edid)  in drm_get_monitor_range()  argument
5457 	if (!version_greater(edid, 1, 1))  in drm_get_monitor_range()
5460 	drm_for_each_detailed_block((u8 *)edid, get_monitor_range,  in drm_get_monitor_range()
5493 u32 drm_add_display_info(struct drm_connector *connector, const struct edid *edid)  in drm_add_display_info()  argument
5497 	u32 quirks = edid_get_quirks(edid);  in drm_add_display_info()
5501 	info->width_mm = edid->width_cm * 10;  in drm_add_display_info()
5502 	info->height_mm = edid->height_cm * 10;  in drm_add_display_info()
5506 	drm_get_monitor_range(connector, edid);  in drm_add_display_info()
5510 	if (edid->revision < 3)  in drm_add_display_info()
5513 	if (!(edid->input & DRM_EDID_INPUT_DIGITAL))  in drm_add_display_info()
5517 	drm_parse_cea_ext(connector, edid);  in drm_add_display_info()
5526 	if (info->bpc == 0 && edid->revision == 3 &&  in drm_add_display_info()
5527 	    edid->input & DRM_EDID_DIGITAL_DFP_1_X) {  in drm_add_display_info()
5534 	if (edid->revision < 4)  in drm_add_display_info()
5537 	switch (edid->input & DRM_EDID_DIGITAL_DEPTH_MASK) {  in drm_add_display_info()
5565 	if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB444)  in drm_add_display_info()
5567 	if (edid->features & DRM_EDID_FEATURE_RGB_YCRCB422)  in drm_add_display_info()
5670 					struct edid *edid)  in add_displayid_detailed_modes()  argument
5679 		displayid = drm_find_displayid_extension(edid, &length, &idx,  in add_displayid_detailed_modes()
5708 int drm_add_edid_modes(struct drm_connector *connector, struct edid *edid)  in drm_add_edid_modes()  argument
5713 	if (edid == NULL) {  in drm_add_edid_modes()
5717 	if (!drm_edid_is_valid(edid)) {  in drm_add_edid_modes()
5724 	drm_edid_to_eld(connector, edid);  in drm_add_edid_modes()
5731 	quirks = drm_add_display_info(connector, edid);  in drm_add_edid_modes()
5747 	num_modes += add_detailed_modes(connector, edid, quirks);  in drm_add_edid_modes()
5748 	num_modes += add_cvt_modes(connector, edid);  in drm_add_edid_modes()
5749 	num_modes += add_standard_modes(connector, edid);  in drm_add_edid_modes()
5750 	num_modes += add_established_modes(connector, edid);  in drm_add_edid_modes()
5751 	num_modes += add_cea_modes(connector, edid);  in drm_add_edid_modes()
5752 	num_modes += add_alternate_cea_modes(connector, edid);  in drm_add_edid_modes()
5753 	num_modes += add_displayid_detailed_modes(connector, edid);  in drm_add_edid_modes()
5754 	if (edid->features & DRM_EDID_FEATURE_DEFAULT_GTF)  in drm_add_edid_modes()
5755 		num_modes += add_inferred_modes(connector, edid);  in drm_add_edid_modes()
6348 			  const struct edid *edid)  in drm_update_tile_info()  argument
6356 		displayid = drm_find_displayid_extension(edid, &length, &idx,  in drm_update_tile_info()