Adding upstream version 6.10.3.upstream/6.10.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 202 insertions, 64 deletions

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 9064cdeb13..4f54c91b31 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -29,16 +29,17 @@
  */
 
 #include <linux/bitfield.h>
+#include <linux/byteorder/generic.h>
 #include <linux/cec.h>
 #include <linux/hdmi.h>
 #include <linux/i2c.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pci.h>
+#include <linux/seq_buf.h>
 #include <linux/slab.h>
 #include <linux/vga_switcheroo.h>
 
-#include <drm/drm_displayid.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_eld.h>
@@ -46,6 +47,7 @@
 #include <drm/drm_print.h>
 
 #include "drm_crtc_internal.h"
+#include "drm_displayid_internal.h"
 #include "drm_internal.h"
 
 static int oui(u8 first, u8 second, u8 third)
@@ -102,6 +104,11 @@ struct detailed_mode_closure {
 	int modes;
 };
 
+struct drm_edid_match_closure {
+	const struct drm_edid_ident *ident;
+	bool matched;
+};
+
 #define LEVEL_DMT	0
 #define LEVEL_GTF	1
 #define LEVEL_GTF2	2
@@ -109,13 +116,15 @@ struct detailed_mode_closure {
 
 #define EDID_QUIRK(vend_chr_0, vend_chr_1, vend_chr_2, product_id, _quirks) \
 { \
-	.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, vend_chr_2, \
-					     product_id), \
+	.ident = { \
+		.panel_id = drm_edid_encode_panel_id(vend_chr_0, vend_chr_1, \
+						     vend_chr_2, product_id), \
+	}, \
 	.quirks = _quirks \
 }
 
 static const struct edid_quirk {
-	u32 panel_id;
+	const struct drm_edid_ident ident;
 	u32 quirks;
 } edid_quirk_list[] = {
 	/* Acer AL1706 */
@@ -1811,36 +1820,25 @@ static bool edid_block_is_zero(const void *edid)
 	return !memchr_inv(edid, 0, EDID_LENGTH);
 }
 
-/**
- * drm_edid_are_equal - compare two edid blobs.
- * @edid1: pointer to first blob
- * @edid2: pointer to second blob
- * This helper can be used during probing to determine if
- * edid had changed.
- */
-bool drm_edid_are_equal(const struct edid *edid1, const struct edid *edid2)
+static bool drm_edid_eq(const struct drm_edid *drm_edid,
+			const void *raw_edid, size_t raw_edid_size)
 {
-	int edid1_len, edid2_len;
-	bool edid1_present = edid1 != NULL;
-	bool edid2_present = edid2 != NULL;
+	bool edid1_present = drm_edid && drm_edid->edid && drm_edid->size;
+	bool edid2_present = raw_edid && raw_edid_size;
 
 	if (edid1_present != edid2_present)
 		return false;
 
-	if (edid1) {
-		edid1_len = edid_size(edid1);
-		edid2_len = edid_size(edid2);
-
-		if (edid1_len != edid2_len)
+	if (edid1_present) {
+		if (drm_edid->size != raw_edid_size)
 			return false;
 
-		if (memcmp(edid1, edid2, edid1_len))
+		if (memcmp(drm_edid->edid, raw_edid, drm_edid->size))
 			return false;
 	}
 
 	return true;
 }
-EXPORT_SYMBOL(drm_edid_are_equal);
 
 enum edid_block_status {
 	EDID_BLOCK_OK = 0,
@@ -2749,8 +2747,84 @@ const struct drm_edid *drm_edid_read(struct drm_connector *connector)
 }
 EXPORT_SYMBOL(drm_edid_read);
 
-static u32 edid_extract_panel_id(const struct edid *edid)
+/**
+ * drm_edid_get_product_id - Get the vendor and product identification
+ * @drm_edid: EDID
+ * @id: Where to place the product id
+ */
+void drm_edid_get_product_id(const struct drm_edid *drm_edid,
+			     struct drm_edid_product_id *id)
+{
+	if (drm_edid && drm_edid->edid && drm_edid->size >= EDID_LENGTH)
+		memcpy(id, &drm_edid->edid->product_id, sizeof(*id));
+	else
+		memset(id, 0, sizeof(*id));
+}
+EXPORT_SYMBOL(drm_edid_get_product_id);
+
+static void decode_date(struct seq_buf *s, const struct drm_edid_product_id *id)
+{
+	int week = id->week_of_manufacture;
+	int year = id->year_of_manufacture + 1990;
+
+	if (week == 0xff)
+		seq_buf_printf(s, "model year: %d", year);
+	else if (!week)
+		seq_buf_printf(s, "year of manufacture: %d", year);
+	else
+		seq_buf_printf(s, "week/year of manufacture: %d/%d", week, year);
+}
+
+/**
+ * drm_edid_print_product_id - Print decoded product id to printer
+ * @p: drm printer
+ * @id: EDID product id
+ * @raw: If true, also print the raw hex
+ *
+ * See VESA E-EDID 1.4 section 3.4.
+ */
+void drm_edid_print_product_id(struct drm_printer *p,
+			       const struct drm_edid_product_id *id, bool raw)
+{
+	DECLARE_SEQ_BUF(date, 40);
+	char vend[4];
+
+	drm_edid_decode_mfg_id(be16_to_cpu(id->manufacturer_name), vend);
+
+	decode_date(&date, id);
+
+	drm_printf(p, "manufacturer name: %s, product code: %u, serial number: %u, %s\n",
+		   vend, le16_to_cpu(id->product_code),
+		   le32_to_cpu(id->serial_number), seq_buf_str(&date));
+
+	if (raw)
+		drm_printf(p, "raw product id: %*ph\n", (int)sizeof(*id), id);
+
+	WARN_ON(seq_buf_has_overflowed(&date));
+}
+EXPORT_SYMBOL(drm_edid_print_product_id);
+
+/**
+ * drm_edid_get_panel_id - Get a panel's ID from EDID
+ * @drm_edid: EDID that contains panel ID.
+ *
+ * This function uses the first block of the EDID of a panel and (assuming
+ * that the EDID is valid) extracts the ID out of it. The ID is a 32-bit value
+ * (16 bits of manufacturer ID and 16 bits of per-manufacturer ID) that's
+ * supposed to be different for each different modem of panel.
+ *
+ * Return: A 32-bit ID that should be different for each make/model of panel.
+ *         See the functions drm_edid_encode_panel_id() and
+ *         drm_edid_decode_panel_id() for some details on the structure of this
+ *         ID. Return 0 if the EDID size is less than a base block.
+ */
+u32 drm_edid_get_panel_id(const struct drm_edid *drm_edid)
 {
+	const struct edid *edid = drm_edid->edid;
+
+	if (drm_edid->size < EDID_LENGTH)
+		return 0;
+
 	/*
 	 * We represent the ID as a 32-bit number so it can easily be compared
 	 * with "==".
@@ -2768,60 +2842,54 @@ static u32 edid_extract_panel_id(const struct edid *edid)
 	       (u32)edid->mfg_id[1] << 16   |
 	       (u32)EDID_PRODUCT_ID(edid);
 }
+EXPORT_SYMBOL(drm_edid_get_panel_id);
 
 /**
- * drm_edid_get_panel_id - Get a panel's ID through DDC
+ * drm_edid_read_base_block - Get a panel's EDID base block
  * @adapter: I2C adapter to use for DDC
  *
- * This function reads the first block of the EDID of a panel and (assuming
- * that the EDID is valid) extracts the ID out of it. The ID is a 32-bit value
- * (16 bits of manufacturer ID and 16 bits of per-manufacturer ID) that's
- * supposed to be different for each different modem of panel.
+ * This function returns the drm_edid containing the first block of the EDID of
+ * a panel.
  *
  * This function is intended to be used during early probing on devices where
  * more than one panel might be present. Because of its intended use it must
- * assume that the EDID of the panel is correct, at least as far as the ID
- * is concerned (in other words, we don't process any overrides here).
+ * assume that the EDID of the panel is correct, at least as far as the base
+ * block is concerned (in other words, we don't process any overrides here).
+ *
+ * Caller should call drm_edid_free() after use.
  *
  * NOTE: it's expected that this function and drm_do_get_edid() will both
  * be read the EDID, but there is no caching between them. Since we're only
  * reading the first block, hopefully this extra overhead won't be too big.
  *
- * Return: A 32-bit ID that should be different for each make/model of panel.
- *         See the functions drm_edid_encode_panel_id() and
- *         drm_edid_decode_panel_id() for some details on the structure of this
- *         ID.
+ * WARNING: Only use this function when the connector is unknown. For example,
+ * during the early probe of panel. The EDID read from the function is temporary
+ * and should be replaced by the full EDID returned from other drm_edid_read.
+ *
+ * Return: Pointer to allocated EDID base block, or NULL on any failure.
  */
-
-u32 drm_edid_get_panel_id(struct i2c_adapter *adapter)
+const struct drm_edid *drm_edid_read_base_block(struct i2c_adapter *adapter)
 {
 	enum edid_block_status status;
 	void *base_block;
-	u32 panel_id = 0;
-
-	/*
-	 * There are no manufacturer IDs of 0, so if there is a problem reading
-	 * the EDID then we'll just return 0.
-	 */
 
 	base_block = kzalloc(EDID_LENGTH, GFP_KERNEL);
 	if (!base_block)
-		return 0;
+		return NULL;
 
 	status = edid_block_read(base_block, 0, drm_do_probe_ddc_edid, adapter);
 
 	edid_block_status_print(status, base_block, 0);
 
-	if (edid_block_status_valid(status, edid_block_tag(base_block)))
-		panel_id = edid_extract_panel_id(base_block);
-	else
+	if (!edid_block_status_valid(status, edid_block_tag(base_block))) {
 		edid_block_dump(KERN_NOTICE, base_block, 0);
+		kfree(base_block);
+		return NULL;
+	}
 
-	kfree(base_block);
-
-	return panel_id;
+	return _drm_edid_alloc(base_block, EDID_LENGTH);
 }
-EXPORT_SYMBOL(drm_edid_get_panel_id);
+EXPORT_SYMBOL(drm_edid_read_base_block);
 
 /**
  * drm_get_edid_switcheroo - get EDID data for a vga_switcheroo output
@@ -2903,16 +2971,17 @@ EXPORT_SYMBOL(drm_edid_duplicate);
  * @drm_edid: EDID to process
  *
  * This tells subsequent routines what fixes they need to apply.
+ *
+ * Return: A u32 represents the quirks to apply.
  */
 static u32 edid_get_quirks(const struct drm_edid *drm_edid)
 {
-	u32 panel_id = edid_extract_panel_id(drm_edid->edid);
 	const struct edid_quirk *quirk;
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) {
 		quirk = &edid_quirk_list[i];
-		if (quirk->panel_id == panel_id)
+		if (drm_edid_match(drm_edid, &quirk->ident))
 			return quirk->quirks;
 	}
 
@@ -4120,7 +4189,7 @@ static int add_detailed_modes(struct drm_connector *connector,
  *
  * FIXME: Prefer not returning pointers to raw EDID data.
  */
-const u8 *drm_find_edid_extension(const struct drm_edid *drm_edid,
+const u8 *drm_edid_find_extension(const struct drm_edid *drm_edid,
 				  int ext_id, int *ext_index)
 {
 	const u8 *edid_ext = NULL;
@@ -4150,11 +4219,21 @@ static bool drm_edid_has_cta_extension(const struct drm_edid *drm_edid)
 {
 	const struct displayid_block *block;
 	struct displayid_iter iter;
-	int ext_index = 0;
+	struct drm_edid_iter edid_iter;
+	const u8 *ext;
 	bool found = false;
 
 	/* Look for a top level CEA extension block */
-	if (drm_find_edid_extension(drm_edid, CEA_EXT, &ext_index))
+	drm_edid_iter_begin(drm_edid, &edid_iter);
+	drm_edid_iter_for_each(ext, &edid_iter) {
+		if (ext[0] == CEA_EXT) {
+			found = true;
+			break;
+		}
+	}
+	drm_edid_iter_end(&edid_iter);
+
+	if (found)
 		return true;
 
 	/* CEA blocks can also be found embedded in a DisplayID block */
@@ -5443,6 +5522,66 @@ drm_parse_hdmi_vsdb_audio(struct drm_connector *connector, const u8 *db)
 }
 
 static void
+match_identity(const struct detailed_timing *timing, void *data)
+{
+	struct drm_edid_match_closure *closure = data;
+	unsigned int i;
+	const char *name = closure->ident->name;
+	unsigned int name_len = strlen(name);
+	const char *desc = timing->data.other_data.data.str.str;
+	unsigned int desc_len = ARRAY_SIZE(timing->data.other_data.data.str.str);
+
+	if (name_len > desc_len ||
+	    !(is_display_descriptor(timing, EDID_DETAIL_MONITOR_NAME) ||
+	      is_display_descriptor(timing, EDID_DETAIL_MONITOR_STRING)))
+		return;
+
+	if (strncmp(name, desc, name_len))
+		return;
+
+	for (i = name_len; i < desc_len; i++) {
+		if (desc[i] == '\n')
+			break;
+		/* Allow white space before EDID string terminator. */
+		if (!isspace(desc[i]))
+			return;
+	}
+
+	closure->matched = true;
+}
+
+/**
+ * drm_edid_match - match drm_edid with given identity
+ * @drm_edid: EDID
+ * @ident: the EDID identity to match with
+ *
+ * Check if the EDID matches with the given identity.
+ *
+ * Return: True if the given identity matched with EDID, false otherwise.
+ */
+bool drm_edid_match(const struct drm_edid *drm_edid,
+		    const struct drm_edid_ident *ident)
+{
+	if (!drm_edid || drm_edid_get_panel_id(drm_edid) != ident->panel_id)
+		return false;
+
+	/* Match with name only if it's not NULL. */
+	if (ident->name) {
+		struct drm_edid_match_closure closure = {
+			.ident = ident,
+			.matched = false,
+		};
+
+		drm_for_each_detailed_block(drm_edid, match_identity, &closure);
+
+		return closure.matched;
+	}
+
+	return true;
+}
+EXPORT_SYMBOL(drm_edid_match);
+
+static void
 monitor_name(const struct detailed_timing *timing, void *data)
 {
 	const char **res = data;
@@ -6787,15 +6926,14 @@ static int _drm_edid_connector_property_update(struct drm_connector *connector,
 	int ret;
 
 	if (connector->edid_blob_ptr) {
-		const struct edid *old_edid = connector->edid_blob_ptr->data;
-
-		if (old_edid) {
-			if (!drm_edid_are_equal(drm_edid ? drm_edid->edid : NULL, old_edid)) {
-				connector->epoch_counter++;
-				drm_dbg_kms(dev, "[CONNECTOR:%d:%s] EDID changed, epoch counter %llu\n",
-					    connector->base.id, connector->name,
-					    connector->epoch_counter);
-			}
+		const void *old_edid = connector->edid_blob_ptr->data;
+		size_t old_edid_size = connector->edid_blob_ptr->length;
+
+		if (old_edid && !drm_edid_eq(drm_edid, old_edid, old_edid_size)) {
+			connector->epoch_counter++;
+			drm_dbg_kms(dev, "[CONNECTOR:%d:%s] EDID changed, epoch counter %llu\n",
+				    connector->base.id, connector->name,
+				    connector->epoch_counter);
 		}
 	}