Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Pull drm merge (part 1) from Dave Airlie: "So first of all my tree and uapi stuff has a conflict mess, its my fault as the nouveau stuff didn't hit -next as were trying to rebase regressions out of it before we merged. Highlights: - SH mobile modesetting driver and associated helpers - some DRM core documentation - i915 modesetting rework, haswell hdmi, haswell and vlv fixes, write combined pte writing, ilk rc6 support, - nouveau: major driver rework into a hw core driver, makes features like SLI a lot saner to implement, - psb: add eDP/DP support for Cedarview - radeon: 2 layer page tables, async VM pte updates, better PLL selection for > 2 screens, better ACPI interactions The rest is general grab bag of fixes. So why part 1? well I have the exynos pull req which came in a bit late but was waiting for me to do something they shouldn't have and it looks fairly safe, and David Howells has some more header cleanups he'd like me to pull, that seem like a good idea, but I'd like to get this merge out of the way so -next dosen't get blocked." Tons of conflicts mostly due to silly include line changes, but mostly mindless. A few other small semantic conflicts too, noted from Dave's pre-merged branch. * 'drm-next' of git://people.freedesktop.org/~airlied/linux: (447 commits) drm/nv98/crypt: fix fuc build with latest envyas drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering drm/nv41/vm: fix and enable use of "real" pciegart drm/nv44/vm: fix and enable use of "real" pciegart drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie drm/nouveau: store supported dma mask in vmmgr drm/nvc0/ibus: initial implementation of subdev drm/nouveau/therm: add support for fan-control modes drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules drm/nouveau/therm: calculate the pwm divisor on nv50+ drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster drm/nouveau/therm: move thermal-related functions to the therm subdev drm/nouveau/bios: parse the pwm divisor from the perf table drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices drm/nouveau/therm: rework thermal table parsing drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table drm/nouveau: fix pm initialization order drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it drm/nouveau: log channel debug/error messages from client object rather than drm client drm/nouveau: have drm debugging macros build on top of core macros ...
2012-10-03 23:29:23 -07:00
parent 3a494318b1 268d28371c
commit 612a9aab56
562 changed files with 71187 additions and 43436 deletions
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -161,7 +161,7 @@ MODULE_PARM_DESC(edid_fixup,
 * Sanity check the EDID block (base or extension).  Return 0 if the block
 * doesn't check out, or 1 if it's valid.
 */
-bool drm_edid_block_valid(u8 *raw_edid, int block)
+bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid)
 {
 	int i;
 	u8 csum = 0;
@@ -184,7 +184,9 @@ bool drm_edid_block_valid(u8 *raw_edid, int block)
 	for (i = 0; i < EDID_LENGTH; i++)
 		csum += raw_edid[i];
 	if (csum) {
-		DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
+		if (print_bad_edid) {
+			DRM_ERROR("EDID checksum is invalid, remainder is %d\n", csum);
+		}

 		/* allow CEA to slide through, switches mangle this */
 		if (raw_edid[0] != 0x02)
@@ -210,7 +212,7 @@ bool drm_edid_block_valid(u8 *raw_edid, int block)
 	return 1;

 bad:
-	if (raw_edid) {
+	if (raw_edid && print_bad_edid) {
 		printk(KERN_ERR "Raw EDID:\n");
 		print_hex_dump(KERN_ERR, " \t", DUMP_PREFIX_NONE, 16, 1,
 			       raw_edid, EDID_LENGTH, false);
@@ -234,7 +236,7 @@ bool drm_edid_is_valid(struct edid *edid)
 		return false;

 	for (i = 0; i <= edid->extensions; i++)
-		if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i))
+		if (!drm_edid_block_valid(raw + i * EDID_LENGTH, i, true))
 			return false;

 	return true;
@@ -257,6 +259,8 @@ drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
 		      int block, int len)
 {
 	unsigned char start = block * EDID_LENGTH;
+	unsigned char segment = block >> 1;
+	unsigned char xfers = segment ? 3 : 2;
 	int ret, retries = 5;

 	/* The core i2c driver will automatically retry the transfer if the
@@ -268,6 +272,11 @@ drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
 	do {
 		struct i2c_msg msgs[] = {
 			{
+				.addr	= DDC_SEGMENT_ADDR,
+				.flags	= 0,
+				.len	= 1,
+				.buf	= &segment,
+			}, {
 				.addr	= DDC_ADDR,
 				.flags	= 0,
 				.len	= 1,
@@ -279,15 +288,21 @@ drm_do_probe_ddc_edid(struct i2c_adapter *adapter, unsigned char *buf,
 				.buf	= buf,
 			}
 		};
-		ret = i2c_transfer(adapter, msgs, 2);
+
+	/*
+	 * Avoid sending the segment addr to not upset non-compliant ddc
+	 * monitors.
+	 */
+		ret = i2c_transfer(adapter, &msgs[3 - xfers], xfers);
+
 		if (ret == -ENXIO) {
 			DRM_DEBUG_KMS("drm: skipping non-existent adapter %s\n",
 					adapter->name);
 			break;
 		}
-	} while (ret != 2 && --retries);
+	} while (ret != xfers && --retries);

-	return ret == 2 ? 0 : -1;
+	return ret == xfers ? 0 : -1;
 }

 static bool drm_edid_is_zero(u8 *in_edid, int length)
@@ -306,6 +321,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 {
 	int i, j = 0, valid_extensions = 0;
 	u8 *block, *new;
+	bool print_bad_edid = !connector->bad_edid_counter || (drm_debug & DRM_UT_KMS);

 	if ((block = kmalloc(EDID_LENGTH, GFP_KERNEL)) == NULL)
 		return NULL;
@@ -314,7 +330,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 	for (i = 0; i < 4; i++) {
 		if (drm_do_probe_ddc_edid(adapter, block, 0, EDID_LENGTH))
 			goto out;
-		if (drm_edid_block_valid(block, 0))
+		if (drm_edid_block_valid(block, 0, print_bad_edid))
 			break;
 		if (i == 0 && drm_edid_is_zero(block, EDID_LENGTH)) {
 			connector->null_edid_counter++;
@@ -339,7 +355,7 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 				  block + (valid_extensions + 1) * EDID_LENGTH,
 				  j, EDID_LENGTH))
 				goto out;
-			if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j)) {
+			if (drm_edid_block_valid(block + (valid_extensions + 1) * EDID_LENGTH, j, print_bad_edid)) {
 				valid_extensions++;
 				break;
 			}
@@ -362,8 +378,11 @@ drm_do_get_edid(struct drm_connector *connector, struct i2c_adapter *adapter)
 	return block;

 carp:
-	dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n",
-		 drm_get_connector_name(connector), j);
+	if (print_bad_edid) {
+		dev_warn(connector->dev->dev, "%s: EDID block %d invalid.\n",
+			 drm_get_connector_name(connector), j);
+	}
+	connector->bad_edid_counter++;

 out:
 	kfree(block);
@@ -402,10 +421,7 @@ struct edid *drm_get_edid(struct drm_connector *connector,
 	if (drm_probe_ddc(adapter))
 		edid = (struct edid *)drm_do_get_edid(connector, adapter);

-	connector->display_info.raw_edid = (char *)edid;
-
 	return edid;
-
 }
 EXPORT_SYMBOL(drm_get_edid);

@@ -1522,6 +1538,40 @@ do_cea_modes (struct drm_connector *connector, u8 *db, u8 len)
 	return modes;
 }

+static int
+cea_db_payload_len(const u8 *db)
+{
+	return db[0] & 0x1f;
+}
+
+static int
+cea_db_tag(const u8 *db)
+{
+	return db[0] >> 5;
+}
+
+static int
+cea_revision(const u8 *cea)
+{
+	return cea[1];
+}
+
+static int
+cea_db_offsets(const u8 *cea, int *start, int *end)
+{
+	/* Data block offset in CEA extension block */
+	*start = 4;
+	*end = cea[2];
+	if (*end == 0)
+		*end = 127;
+	if (*end < 4 || *end > 127)
+		return -ERANGE;
+	return 0;
+}
+
+#define for_each_cea_db(cea, i, start, end) \
+	for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1)
+
 static int
 add_cea_modes(struct drm_connector *connector, struct edid *edid)
 {
@@ -1529,10 +1579,17 @@ add_cea_modes(struct drm_connector *connector, struct edid *edid)
 	u8 * db, dbl;
 	int modes = 0;

-	if (cea && cea[1] >= 3) {
-		for (db = cea + 4; db < cea + cea[2]; db += dbl + 1) {
-			dbl = db[0] & 0x1f;
-			if (((db[0] & 0xe0) >> 5) == VIDEO_BLOCK)
+	if (cea && cea_revision(cea) >= 3) {
+		int i, start, end;
+
+		if (cea_db_offsets(cea, &start, &end))
+			return 0;
+
+		for_each_cea_db(cea, i, start, end) {
+			db = &cea[i];
+			dbl = cea_db_payload_len(db);
+
+			if (cea_db_tag(db) == VIDEO_BLOCK)
 				modes += do_cea_modes (connector, db+1, dbl);
 		}
 	}
@@ -1541,19 +1598,28 @@ add_cea_modes(struct drm_connector *connector, struct edid *edid)
 }

 static void
-parse_hdmi_vsdb(struct drm_connector *connector, uint8_t *db)
+parse_hdmi_vsdb(struct drm_connector *connector, const u8 *db)
 {
-	connector->eld[5] |= (db[6] >> 7) << 1;  /* Supports_AI */
+	u8 len = cea_db_payload_len(db);

-	connector->dvi_dual = db[6] & 1;
-	connector->max_tmds_clock = db[7] * 5;
-
-	connector->latency_present[0] = db[8] >> 7;
-	connector->latency_present[1] = (db[8] >> 6) & 1;
-	connector->video_latency[0] = db[9];
-	connector->audio_latency[0] = db[10];
-	connector->video_latency[1] = db[11];
-	connector->audio_latency[1] = db[12];
+	if (len >= 6) {
+		connector->eld[5] |= (db[6] >> 7) << 1;  /* Supports_AI */
+		connector->dvi_dual = db[6] & 1;
+	}
+	if (len >= 7)
+		connector->max_tmds_clock = db[7] * 5;
+	if (len >= 8) {
+		connector->latency_present[0] = db[8] >> 7;
+		connector->latency_present[1] = (db[8] >> 6) & 1;
+	}
+	if (len >= 9)
+		connector->video_latency[0] = db[9];
+	if (len >= 10)
+		connector->audio_latency[0] = db[10];
+	if (len >= 11)
+		connector->video_latency[1] = db[11];
+	if (len >= 12)
+		connector->audio_latency[1] = db[12];

 	DRM_LOG_KMS("HDMI: DVI dual %d, "
 		    "max TMDS clock %d, "
@@ -1577,6 +1643,21 @@ monitor_name(struct detailed_timing *t, void *data)
 		*(u8 **)data = t->data.other_data.data.str.str;
 }

+static bool cea_db_is_hdmi_vsdb(const u8 *db)
+{
+	int hdmi_id;
+
+	if (cea_db_tag(db) != VENDOR_BLOCK)
+		return false;
+
+	if (cea_db_payload_len(db) < 5)
+		return false;
+
+	hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16);
+
+	return hdmi_id == HDMI_IDENTIFIER;
+}
+
 /**
 * drm_edid_to_eld - build ELD from EDID
 * @connector: connector corresponding to the HDMI/DP sink
@@ -1623,29 +1704,40 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
 	eld[18] = edid->prod_code[0];
 	eld[19] = edid->prod_code[1];

-	if (cea[1] >= 3)
-		for (db = cea + 4; db < cea + cea[2]; db += dbl + 1) {
-			dbl = db[0] & 0x1f;
-			
-			switch ((db[0] & 0xe0) >> 5) {
+	if (cea_revision(cea) >= 3) {
+		int i, start, end;
+
+		if (cea_db_offsets(cea, &start, &end)) {
+			start = 0;
+			end = 0;
+		}
+
+		for_each_cea_db(cea, i, start, end) {
+			db = &cea[i];
+			dbl = cea_db_payload_len(db);
+
+			switch (cea_db_tag(db)) {
 			case AUDIO_BLOCK:
 				/* Audio Data Block, contains SADs */
 				sad_count = dbl / 3;
-				memcpy(eld + 20 + mnl, &db[1], dbl);
+				if (dbl >= 1)
+					memcpy(eld + 20 + mnl, &db[1], dbl);
 				break;
 			case SPEAKER_BLOCK:
-                                /* Speaker Allocation Data Block */
-				eld[7] = db[1];
+				/* Speaker Allocation Data Block */
+				if (dbl >= 1)
+					eld[7] = db[1];
 				break;
 			case VENDOR_BLOCK:
 				/* HDMI Vendor-Specific Data Block */
-				if (db[1] == 0x03 && db[2] == 0x0c && db[3] == 0)
+				if (cea_db_is_hdmi_vsdb(db))
 					parse_hdmi_vsdb(connector, db);
 				break;
 			default:
 				break;
 			}
 		}
+	}
 	eld[5] |= sad_count << 4;
 	eld[2] = (20 + mnl + sad_count * 3 + 3) / 4;

@@ -1723,38 +1815,26 @@ EXPORT_SYMBOL(drm_select_eld);
 bool drm_detect_hdmi_monitor(struct edid *edid)
 {
 	u8 *edid_ext;
-	int i, hdmi_id;
+	int i;
 	int start_offset, end_offset;
-	bool is_hdmi = false;

 	edid_ext = drm_find_cea_extension(edid);
 	if (!edid_ext)
-		goto end;
+		return false;

-	/* Data block offset in CEA extension block */
-	start_offset = 4;
-	end_offset = edid_ext[2];
+	if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
+		return false;

 	/*
 	 * Because HDMI identifier is in Vendor Specific Block,
 	 * search it from all data blocks of CEA extension.
 	 */
-	for (i = start_offset; i < end_offset;
-		/* Increased by data block len */
-		i += ((edid_ext[i] & 0x1f) + 1)) {
-		/* Find vendor specific block */
-		if ((edid_ext[i] >> 5) == VENDOR_BLOCK) {
-			hdmi_id = edid_ext[i + 1] | (edid_ext[i + 2] << 8) |
-				  edid_ext[i + 3] << 16;
-			/* Find HDMI identifier */
-			if (hdmi_id == HDMI_IDENTIFIER)
-				is_hdmi = true;
-			break;
-		}
+	for_each_cea_db(edid_ext, i, start_offset, end_offset) {
+		if (cea_db_is_hdmi_vsdb(&edid_ext[i]))
+			return true;
 	}

-end:
-	return is_hdmi;
+	return false;
 }
 EXPORT_SYMBOL(drm_detect_hdmi_monitor);

@@ -1786,15 +1866,13 @@ bool drm_detect_monitor_audio(struct edid *edid)
 		goto end;
 	}

-	/* Data block offset in CEA extension block */
-	start_offset = 4;
-	end_offset = edid_ext[2];
+	if (cea_db_offsets(edid_ext, &start_offset, &end_offset))
+		goto end;

-	for (i = start_offset; i < end_offset;
-			i += ((edid_ext[i] & 0x1f) + 1)) {
-		if ((edid_ext[i] >> 5) == AUDIO_BLOCK) {
+	for_each_cea_db(edid_ext, i, start_offset, end_offset) {
+		if (cea_db_tag(&edid_ext[i]) == AUDIO_BLOCK) {
 			has_audio = true;
-			for (j = 1; j < (edid_ext[i] & 0x1f); j += 3)
+			for (j = 1; j < cea_db_payload_len(&edid_ext[i]) + 1; j += 3)
 				DRM_DEBUG_KMS("CEA audio format %d\n",
 					      (edid_ext[i + j] >> 3) & 0xf);
 			goto end;