Merge tag 'char-misc-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull Char/Misc/IIO/Binder updates from Greg KH:
 "Here is the big set of char/misc/iio and other driver subsystem
  changes for 6.18-rc1.

  Loads of different stuff in here, it was a busy development cycle in
  lots of different subsystems, with over 27k new lines added to the
  tree.

  Included in here are:

   - IIO updates including new drivers, reworking of existing apis, and
     other goodness in the sensor subsystems

   - MEI driver updates and additions

   - NVMEM driver updates

   - slimbus removal for an unused driver and some other minor updates

   - coresight driver updates and additions

   - MHI driver updates

   - comedi driver updates and fixes

   - extcon driver updates

   - interconnect driver additions

   - eeprom driver updates and fixes

   - minor UIO driver updates

   - tiny W1 driver updates

  But the majority of new code is in the rust bindings and additions,
  which includes:

   - misc driver rust binding updates for read/write support, we can now
     write "normal" misc drivers in rust fully, and the sample driver
     shows how this can be done.

   - Initial framework for USB driver rust bindings, which are disabled
     for now in the build, due to limited support, but coming in through
     this tree due to dependencies on other rust binding changes that
     were in here. I'll be enabling these back on in the build in the
     usb.git tree after -rc1 is out so that developers can continue to
     work on these in linux-next over the next development cycle.

   - Android Binder driver implemented in Rust.

     This is the big one, and was driving a huge majority of the rust
     binding work over the past years. Right now there are two binder
     drivers in the kernel, selected only at build time as to which one
     to use as binder wants to be included in the system at boot time.

     The binder C maintainers all agreed on this, as eventually, they
     want the C code to be removed from the tree, but it will take a few
     releases to get there while both are maintained to ensure that the
     rust implementation is fully stable and compliant with the existing
     userspace apis.

  All of these have been in linux-next for a while"

* tag 'char-misc-6.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (320 commits)
  rust: usb: keep usb::Device private for now
  rust: usb: don't retain device context for the interface parent
  USB: disable rust bindings from the build for now
  samples: rust: add a USB driver sample
  rust: usb: add basic USB abstractions
  coresight: Add label sysfs node support
  dt-bindings: arm: Add label in the coresight components
  coresight: tnoc: add new AMBA ID to support Trace Noc V2
  coresight: Fix incorrect handling for return value of devm_kzalloc
  coresight: tpda: fix the logic to setup the element size
  coresight: trbe: Return NULL pointer for allocation failures
  coresight: Refactor runtime PM
  coresight: Make clock sequence consistent
  coresight: Refactor driver data allocation
  coresight: Consolidate clock enabling
  coresight: Avoid enable programming clock duplicately
  coresight: Appropriately disable trace bus clocks
  coresight: Appropriately disable programming clocks
  coresight: etm4x: Support atclk
  coresight: catu: Support atclk
  ...

1 files changed, 25 insertions, 29 deletions

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 53e88a1bc430..8e1d97873423 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -27,8 +27,7 @@
 #define MDSP_DOMAIN_ID (1)
 #define SDSP_DOMAIN_ID (2)
 #define CDSP_DOMAIN_ID (3)
-#define CDSP1_DOMAIN_ID (4)
-#define FASTRPC_DEV_MAX		5 /* adsp, mdsp, slpi, cdsp, cdsp1 */
+#define GDSP_DOMAIN_ID (4)
 #define FASTRPC_MAX_SESSIONS	14
 #define FASTRPC_MAX_VMIDS	16
 #define FASTRPC_ALIGN		128
@@ -106,8 +105,6 @@
 
 #define miscdev_to_fdevice(d) container_of(d, struct fastrpc_device, miscdev)
 
-static const char *domains[FASTRPC_DEV_MAX] = { "adsp", "mdsp",
-						"sdsp", "cdsp", "cdsp1" };
 struct fastrpc_phy_page {
 	u64 addr;		/* physical address */
 	u64 size;		/* size of contiguous region */
@@ -1723,7 +1720,6 @@ static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap,
 	uint32_t attribute_id = cap->attribute_id;
 	uint32_t *dsp_attributes;
 	unsigned long flags;
-	uint32_t domain = cap->domain;
 	int err;
 
 	spin_lock_irqsave(&cctx->lock, flags);
@@ -1741,7 +1737,7 @@ static int fastrpc_get_info_from_kernel(struct fastrpc_ioctl_capability *cap,
 	err = fastrpc_get_info_from_dsp(fl, dsp_attributes, FASTRPC_MAX_DSP_ATTRIBUTES);
 	if (err == DSP_UNSUPPORTED_API) {
 		dev_info(&cctx->rpdev->dev,
-			 "Warning: DSP capabilities not supported on domain: %d\n", domain);
+			 "Warning: DSP capabilities not supported\n");
 		kfree(dsp_attributes);
 		return -EOPNOTSUPP;
 	} else if (err) {
@@ -1769,17 +1765,6 @@ static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp)
 		return  -EFAULT;
 
 	cap.capability = 0;
-	if (cap.domain >= FASTRPC_DEV_MAX) {
-		dev_err(&fl->cctx->rpdev->dev, "Error: Invalid domain id:%d, err:%d\n",
-			cap.domain, err);
-		return -ECHRNG;
-	}
-
-	/* Fastrpc Capablities does not support modem domain */
-	if (cap.domain == MDSP_DOMAIN_ID) {
-		dev_err(&fl->cctx->rpdev->dev, "Error: modem not supported %d\n", err);
-		return -ECHRNG;
-	}
 
 	if (cap.attribute_id >= FASTRPC_MAX_DSP_ATTRIBUTES) {
 		dev_err(&fl->cctx->rpdev->dev, "Error: invalid attribute: %d, err: %d\n",
@@ -2255,6 +2240,22 @@ static int fastrpc_device_register(struct device *dev, struct fastrpc_channel_ct
 	return err;
 }
 
+static int fastrpc_get_domain_id(const char *domain)
+{
+	if (!strncmp(domain, "adsp", 4))
+		return ADSP_DOMAIN_ID;
+	else if (!strncmp(domain, "cdsp", 4))
+		return CDSP_DOMAIN_ID;
+	else if (!strncmp(domain, "mdsp", 4))
+		return MDSP_DOMAIN_ID;
+	else if (!strncmp(domain, "sdsp", 4))
+		return SDSP_DOMAIN_ID;
+	else if (!strncmp(domain, "gdsp", 4))
+		return GDSP_DOMAIN_ID;
+
+	return -EINVAL;
+}
+
 static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 {
 	struct device *rdev = &rpdev->dev;
@@ -2270,15 +2271,10 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 		return err;
 	}
 
-	for (i = 0; i < FASTRPC_DEV_MAX; i++) {
-		if (!strcmp(domains[i], domain)) {
-			domain_id = i;
-			break;
-		}
-	}
+	domain_id = fastrpc_get_domain_id(domain);
 
 	if (domain_id < 0) {
-		dev_info(rdev, "FastRPC Invalid Domain ID %d\n", domain_id);
+		dev_info(rdev, "FastRPC Domain %s not supported\n", domain);
 		return -EINVAL;
 	}
 
@@ -2325,21 +2321,21 @@ static int fastrpc_rpmsg_probe(struct rpmsg_device *rpdev)
 	case ADSP_DOMAIN_ID:
 	case MDSP_DOMAIN_ID:
 	case SDSP_DOMAIN_ID:
-		/* Unsigned PD offloading is only supported on CDSP and CDSP1 */
+		/* Unsigned PD offloading is only supported on CDSP and GDSP */
 		data->unsigned_support = false;
-		err = fastrpc_device_register(rdev, data, secure_dsp, domains[domain_id]);
+		err = fastrpc_device_register(rdev, data, secure_dsp, domain);
 		if (err)
 			goto err_free_data;
 		break;
 	case CDSP_DOMAIN_ID:
-	case CDSP1_DOMAIN_ID:
+	case GDSP_DOMAIN_ID:
 		data->unsigned_support = true;
 		/* Create both device nodes so that we can allow both Signed and Unsigned PD */
-		err = fastrpc_device_register(rdev, data, true, domains[domain_id]);
+		err = fastrpc_device_register(rdev, data, true, domain);
 		if (err)
 			goto err_free_data;
 
-		err = fastrpc_device_register(rdev, data, false, domains[domain_id]);
+		err = fastrpc_device_register(rdev, data, false, domain);
 		if (err)
 			goto err_deregister_fdev;
 		break;