Add bridged amplifiers to cs42l43

Merge series from Charles Keepax <[email protected]>:

In some cs42l43 systems a couple of cs35l56 amplifiers are attached
to the cs42l43's SPI and I2S. On Windows the cs42l43 is controlled
by a SDCA class driver and these two amplifiers are controlled by
firmware running on the cs42l43. However, under Linux the decision
was made to interact with the cs42l43 directly, affording the user
greater control over the audio system. However, this has resulted
in an issue where these two bridged cs35l56 amplifiers are not
populated in ACPI and must be added manually. There is at least an
SDCA extension unit DT entry we can key off.

The process of adding this is handled using a software node, firstly the
ability to add native chip selects to software nodes must be added.
Secondly, an additional flag for naming the SPI devices is added this
allows the machine driver to key to the correct amplifier. Then finally,
the cs42l43 SPI driver adds the two amplifiers directly onto its SPI
bus.

An additional series will follow soon to add the audio machine driver
parts (in the sof-sdw driver), however that is fairly orthogonal to
this part of the process, getting the actual amplifiers registered.

1 files changed, 12 insertions, 12 deletions

diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c
index a1eec65a9713..e824be9d9bbb 100644
--- a/drivers/scsi/myrs.c
+++ b/drivers/scsi/myrs.c
@@ -947,9 +947,9 @@ static ssize_t raid_state_show(struct device *dev,
 
 		name = myrs_devstate_name(ldev_info->dev_state);
 		if (name)
-			ret = snprintf(buf, 32, "%s\n", name);
+			ret = snprintf(buf, 64, "%s\n", name);
 		else
-			ret = snprintf(buf, 32, "Invalid (%02X)\n",
+			ret = snprintf(buf, 64, "Invalid (%02X)\n",
 				       ldev_info->dev_state);
 	} else {
 		struct myrs_pdev_info *pdev_info;
@@ -958,9 +958,9 @@ static ssize_t raid_state_show(struct device *dev,
 		pdev_info = sdev->hostdata;
 		name = myrs_devstate_name(pdev_info->dev_state);
 		if (name)
-			ret = snprintf(buf, 32, "%s\n", name);
+			ret = snprintf(buf, 64, "%s\n", name);
 		else
-			ret = snprintf(buf, 32, "Invalid (%02X)\n",
+			ret = snprintf(buf, 64, "Invalid (%02X)\n",
 				       pdev_info->dev_state);
 	}
 	return ret;
@@ -1066,13 +1066,13 @@ static ssize_t raid_level_show(struct device *dev,
 		ldev_info = sdev->hostdata;
 		name = myrs_raid_level_name(ldev_info->raid_level);
 		if (!name)
-			return snprintf(buf, 32, "Invalid (%02X)\n",
+			return snprintf(buf, 64, "Invalid (%02X)\n",
 					ldev_info->dev_state);
 
 	} else
 		name = myrs_raid_level_name(MYRS_RAID_PHYSICAL);
 
-	return snprintf(buf, 32, "%s\n", name);
+	return snprintf(buf, 64, "%s\n", name);
 }
 static DEVICE_ATTR_RO(raid_level);
 
@@ -1086,7 +1086,7 @@ static ssize_t rebuild_show(struct device *dev,
 	unsigned char status;
 
 	if (sdev->channel < cs->ctlr_info->physchan_present)
-		return snprintf(buf, 32, "physical device - not rebuilding\n");
+		return snprintf(buf, 64, "physical device - not rebuilding\n");
 
 	ldev_info = sdev->hostdata;
 	ldev_num = ldev_info->ldev_num;
@@ -1098,11 +1098,11 @@ static ssize_t rebuild_show(struct device *dev,
 		return -EIO;
 	}
 	if (ldev_info->rbld_active) {
-		return snprintf(buf, 32, "rebuilding block %zu of %zu\n",
+		return snprintf(buf, 64, "rebuilding block %zu of %zu\n",
 				(size_t)ldev_info->rbld_lba,
 				(size_t)ldev_info->cfg_devsize);
 	} else
-		return snprintf(buf, 32, "not rebuilding\n");
+		return snprintf(buf, 64, "not rebuilding\n");
 }
 
 static ssize_t rebuild_store(struct device *dev,
@@ -1190,7 +1190,7 @@ static ssize_t consistency_check_show(struct device *dev,
 	unsigned short ldev_num;
 
 	if (sdev->channel < cs->ctlr_info->physchan_present)
-		return snprintf(buf, 32, "physical device - not checking\n");
+		return snprintf(buf, 64, "physical device - not checking\n");
 
 	ldev_info = sdev->hostdata;
 	if (!ldev_info)
@@ -1198,11 +1198,11 @@ static ssize_t consistency_check_show(struct device *dev,
 	ldev_num = ldev_info->ldev_num;
 	myrs_get_ldev_info(cs, ldev_num, ldev_info);
 	if (ldev_info->cc_active)
-		return snprintf(buf, 32, "checking block %zu of %zu\n",
+		return snprintf(buf, 64, "checking block %zu of %zu\n",
 				(size_t)ldev_info->cc_lba,
 				(size_t)ldev_info->cfg_devsize);
 	else
-		return snprintf(buf, 32, "not checking\n");
+		return snprintf(buf, 64, "not checking\n");
 }
 
 static ssize_t consistency_check_store(struct device *dev,