Commit 8e3a3249 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'char-misc-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc 

Pull char/misc driver updates from Greg KH:
 "Here is the big set of various smaller driver subsystem updates for
  5.13-rc1.

  Major bits in here are:

   - habanalabs driver updates

   - hwtracing driver updates

   - interconnect driver updates

   - mhi driver updates

   - extcon driver updates

   - fpga driver updates

   - new binder features added

   - nvmem driver updates

   - phy driver updates

   - soundwire driver updates

   - smaller misc and char driver fixes and updates.

   - bluetooth driver bugfix that maintainer wanted to go through this
     tree.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (330 commits)
  bluetooth: eliminate the potential race condition when removing the HCI controller
  coresight: etm-perf: Fix define build issue when built as module
  phy: Revert "phy: ti: j721e-wiz: add missing of_node_put"
  phy: ti: j721e-wiz: Add missing include linux/slab.h
  phy: phy-twl4030-usb: Fix possible use-after-free in twl4030_usb_remove()
  stm class: Use correct UUID APIs
  intel_th: pci: Add Alder Lake-M support
  intel_th: pci: Add Rocket Lake CPU support
  intel_th: Consistency and off-by-one fix
  intel_th: Constify attribute_group structs
  intel_th: Constify all drvdata references
  stm class: Remove an unused function
  habanalabs/gaudi: Fix uninitialized return code rc when read size is zero
  greybus: es2: fix kernel-doc warnings
  mei: me: add Alder Lake P device id.
  dw-xdata-pcie: Update outdated info and improve text format
  dw-xdata-pcie: Fix documentation build warns
  fbdev: zero-fill colormap in fbcmap.c
  firmware: qcom-scm: Fix QCOM_SCM configuration
  speakup: i18n: Switch to kmemdup_nul() in spk_msg_set()
  ...
parents 90035c28 e2cb6b89

Documentation/ABI/testing/debugfs-driver-habanalabs

+54 −16
Original line number Diff line number Diff line
@@ -82,6 +82,24 @@ Description: Allows the root user to read or write 64 bit data directly 
                If the IOMMU is disabled, it also allows the root user to read

                or write from the host a device VA of a host mapped memory



What:           /sys/kernel/debug/habanalabs/hl<n>/data_dma

Date:           Apr 2021

KernelVersion:  5.13

Contact:        ogabbay@kernel.org

Description:    Allows the root user to read from the device's internal

                memory (DRAM/SRAM) through a DMA engine.

                This property is a binary blob that contains the result of the

                DMA transfer.

                This custom interface is needed (instead of using the generic

                Linux user-space PCI mapping) because the amount of internal

                memory is huge (>32GB) and reading it via the PCI bar will take

                a very long time.

                This interface doesn't support concurrency in the same device.

                In GAUDI and GOYA, this action can cause undefined behavior

                in case the it is done while the device is executing user

                workloads.

                Only supported on GAUDI at this stage.



What:           /sys/kernel/debug/habanalabs/hl<n>/device

Date:           Jan 2019

KernelVersion:  5.1
@@ -90,6 +108,24 @@ Description: Enables the root user to set the device to specific state. 
                Valid values are "disable", "enable", "suspend", "resume".

                User can read this property to see the valid values



What:           /sys/kernel/debug/habanalabs/hl<n>/dma_size

Date:           Apr 2021

KernelVersion:  5.13

Contact:        ogabbay@kernel.org

Description:    Specify the size of the DMA transaction when using DMA to read

                from the device's internal memory. The value can not be larger

                than 128MB. Writing to this value initiates the DMA transfer.

                When the write is finished, the user can read the "data_dma"

                blob



What:           /sys/kernel/debug/habanalabs/hl<n>/dump_security_violations

Date:           Jan 2021

KernelVersion:  5.12

Contact:        ogabbay@kernel.org

Description:    Dumps all security violations to dmesg. This will also ack

                all security violations meanings those violations will not be

                dumped next time user calls this API



What:           /sys/kernel/debug/habanalabs/hl<n>/engines

Date:           Jul 2019

KernelVersion:  5.3
@@ -154,6 +190,16 @@ Description: Displays the hop values and physical address for a given ASID 
                e.g. to display info about VA 0x1000 for ASID 1 you need to do:

                echo "1 0x1000" > /sys/kernel/debug/habanalabs/hl0/mmu



What:           /sys/kernel/debug/habanalabs/hl<n>/mmu_error

Date:           Mar 2021

KernelVersion:  5.12

Contact:        fkassabri@habana.ai

Description:    Check and display page fault or access violation mmu errors for

                all MMUs specified in mmu_cap_mask.

                e.g. to display error info for MMU hw cap bit 9, you need to do:

                echo "0x200" > /sys/kernel/debug/habanalabs/hl0/mmu_error

                cat /sys/kernel/debug/habanalabs/hl0/mmu_error



What:           /sys/kernel/debug/habanalabs/hl<n>/set_power_state

Date:           Jan 2019

KernelVersion:  5.1
@@ -161,6 +207,13 @@ Contact: ogabbay@kernel.org 
Description:    Sets the PCI power state. Valid values are "1" for D0 and "2"

                for D3Hot



What:           /sys/kernel/debug/habanalabs/hl<n>/stop_on_err

Date:           Mar 2020

KernelVersion:  5.6

Contact:        ogabbay@kernel.org

Description:    Sets the stop-on_error option for the device engines. Value of

                "0" is for disable, otherwise enable.



What:           /sys/kernel/debug/habanalabs/hl<n>/userptr

Date:           Jan 2019

KernelVersion:  5.1
@@ -174,19 +227,4 @@ Date: Jan 2019 
KernelVersion:  5.1

Contact:        ogabbay@kernel.org

Description:    Displays a list with information about all the active virtual

                address mappings per ASID



What:           /sys/kernel/debug/habanalabs/hl<n>/stop_on_err

Date:           Mar 2020

KernelVersion:  5.6

Contact:        ogabbay@kernel.org

Description:    Sets the stop-on_error option for the device engines. Value of

                "0" is for disable, otherwise enable.



What:           /sys/kernel/debug/habanalabs/hl<n>/dump_security_violations

Date:           Jan 2021

KernelVersion:  5.12

Contact:        ogabbay@kernel.org

Description:    Dumps all security violations to dmesg. This will also ack

                all security violations meanings those violations will not be

                dumped next time user calls this API
 
                address mappings per ASID and all user mappings of HW blocks

Documentation/ABI/testing/sysfs-bus-pci-devices-pvpanic

+3 −1
Original line number Diff line number Diff line 
What:		/sys/devices/pci0000:00/*/QEMU0001:00/capability

What:		/sys/devices/pci0000:00/*/QEMU0001:00/capability for MMIO

		/sys/bus/pci/drivers/pvpanic-pci/0000:00:0*.0/capability for PCI

Date:		Jan 2021

Contact:	zhenwei pi <pizhenwei@bytedance.com>

Description:
@@ -12,6 +13,7 @@ Description: 
		https://git.qemu.org/?p=qemu.git;a=blob_plain;f=docs/specs/pvpanic.txt



What:		/sys/devices/pci0000:00/*/QEMU0001:00/events

		/sys/bus/pci/drivers/pvpanic-pci/0000:00:0*.0/events for PCI

Date:		Jan 2021

Contact:	zhenwei pi <pizhenwei@bytedance.com>

Description:

Documentation/ABI/testing/sysfs-driver-xdata

0 → 100644
+49 −0
Original line number Diff line number Diff line 
What:		/sys/class/misc/drivers/dw-xdata-pcie.<device>/write

Date:		April 2021

KernelVersion:	5.13

Contact:	Gustavo Pimentel <gustavo.pimentel@synopsys.com>

Description:	Allows the user to enable the PCIe traffic generator which

		will create write TLPs frames - from the Root Complex to the

		Endpoint direction or to disable the PCIe traffic generator

		in all directions.



		Write y/1/on to enable, n/0/off to disable



		Usage e.g.

		 echo 1 > /sys/class/misc/dw-xdata-pcie.<device>/write

		or

		 echo 0 > /sys/class/misc/dw-xdata-pcie.<device>/write



		The user can read the current PCIe link throughput generated

		through this generator in MB/s.



		Usage e.g.

		 cat /sys/class/misc/dw-xdata-pcie.<device>/write

		 204



		The file is read and write.



What:		/sys/class/misc/dw-xdata-pcie.<device>/read

Date:		April 2021

KernelVersion:	5.13

Contact:	Gustavo Pimentel <gustavo.pimentel@synopsys.com>

Description:	Allows the user to enable the PCIe traffic generator which

		will create read TLPs frames - from the Endpoint to the Root

		Complex direction or to disable the PCIe traffic generator

                in all directions.



		Write y/1/on to enable, n/0/off to disable



		Usage e.g.

		 echo 1 > /sys/class/misc/dw-xdata-pcie.<device>/read

		or

		 echo 0 > /sys/class/misc/dw-xdata-pcie.<device>/read



		The user can read the current PCIe link throughput generated

		through this generator in MB/s.



		Usage e.g.

		 cat /sys/class/misc/dw-xdata-pcie.<device>/read

		 199



		The file is read and write.

Documentation/devicetree/bindings/extcon/qcom,pm8941-misc.txt

deleted100644 → 0
+0 −41
Original line number Diff line number Diff line 
Qualcomm's PM8941 USB ID Extcon device



Some Qualcomm PMICs have a "misc" module that can be used to detect when

the USB ID pin has been pulled low or high.



PROPERTIES



- compatible:

    Usage: required

    Value type: <string>

    Definition: Should contain "qcom,pm8941-misc";



- reg:

    Usage: required

    Value type: <u32>

    Definition: Should contain the offset to the misc address space



- interrupts:

    Usage: required

    Value type: <prop-encoded-array>

    Definition: Should contain the usb id interrupt



- interrupt-names:

    Usage: required

    Value type: <stringlist>

    Definition: Should contain the string "usb_id" for the usb id interrupt



Example:



	pmic {

		usb_id: misc@900 {

			compatible = "qcom,pm8941-misc";

			reg = <0x900>;

			interrupts = <0x0 0x9 0 IRQ_TYPE_EDGE_BOTH>;

			interrupt-names = "usb_id";

		};

	}



	usb-controller {

		extcon = <&usb_id>;

	};

Documentation/devicetree/bindings/extcon/qcom,pm8941-misc.yaml

0 → 100644
+62 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/extcon/qcom,pm8941-misc.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Qualcomm Technologies, Inc. PM8941 USB ID Extcon device



maintainers:

  - Guru Das Srinagesh <gurus@codeaurora.org>



description: |

  Some Qualcomm PMICs have a "misc" module that can be used to detect when

  the USB ID pin has been pulled low or high.



properties:

  compatible:

    items:

      - const: qcom,pm8941-misc



  reg:

    maxItems: 1



  interrupts:

    minItems: 1

    maxItems: 2



  interrupt-names:

    minItems: 1

    items:

      - const: usb_id

      - const: usb_vbus



required:

  - compatible

  - reg

  - interrupts

  - interrupt-names



additionalProperties: false



examples:

  - |

    #include <dt-bindings/interrupt-controller/irq.h>



    pmic {

            #address-cells = <1>;

            #size-cells = <0>;

            interrupt-controller;

            #interrupt-cells = <4>;



            usb_id: misc@900 {

                    compatible = "qcom,pm8941-misc";

                    reg = <0x900>;

                    interrupts = <0x0 0x9 0 IRQ_TYPE_EDGE_BOTH>;

                    interrupt-names = "usb_id";

            };

    };



    usb-controller {

           extcon = <&usb_id>;

    };