Merge tag 'platform-drivers-x86-v5.3-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:
 "Gathered a bunch of x86 platform driver changes. It's rather big,
  since includes two big refactors and completely new driver:

   - ASUS WMI driver got a big refactoring in order to support the TUF
     Gaming laptops. Besides that, the regression with backlight being
     permanently off on various EeePC laptops has been fixed.

   - Accelerometer on HP ProBook 450 G0 shows wrong measurements due to
     X axis being inverted. This has been fixed.

   - Intel PMC core driver has been extended to be ACPI enumerated if
     the DSDT provides device with _HID "INT33A1". This allows to
     convert the driver to be pure platform and support new hardware
     purely based on ACPI DSDT.

   - From now on the Intel Speed Select Technology is supported thru a
     corresponding driver. This driver provides an access to the
     features of the ISST, such as Performance Profile, Core Power, Base
     frequency and Turbo Frequency.

   - Mellanox platform drivers has been refactored and now extended to
     support more systems, including new coming ones.

   - The OLPC XO-1.75 platform is now supported.

   - CB4063 Beckhoff Automation board is using PMC clocks, provided via
     pmc_atom driver, for ethernet controllers in a way that they can't
     be managed by the clock driver. The quirk has been extended to
     cover this case.

   - Touchscreen on Chuwi Hi10 Plus tablet has been enabled. Meanwhile
     the information of Chuwi Hi10 Air has been fixed to cover more
     models based on the same platform.

   - Xiaomi notebooks have WMI interface enabled. Thus, the driver to
     support it has been provided. It required some extension of the
     generic WMI library, which allows to propagate opaque context to
     the ->probe() of the individual drivers.

  This release includes debugfs clean up from Greg KH for several
  drivers that drop return code check and make debugfs absence or
  failure non-fatal.

  Also miscellaneous fixes here and there, mostly for Acer WMI and
  various Intel drivers"

* tag 'platform-drivers-x86-v5.3-1' of git://git.infradead.org/linux-platform-drivers-x86: (74 commits)
  platform/x86: Fix PCENGINES_APU2 Kconfig warning
  tools/power/x86/intel-speed-select: Add .gitignore file
  platform/x86: mlx-platform: Fix error handling in mlxplat_init()
  platform/x86: intel_pmc_core: Attach using APCI HID "INT33A1"
  platform/x86: intel_pmc_core: transform Pkg C-state residency from TSC ticks into microseconds
  platform/x86: asus-wmi: Use dev_get_drvdata()
  Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
  platform/x86: mlx-platform: Add more reset cause attributes
  platform/x86: mlx-platform: Modify DMI matching order
  platform/x86: mlx-platform: Add regmap structure for the next generation systems
  platform/x86: mlx-platform: Change API for i2c-mlxcpld driver activation
  platform/x86: mlx-platform: Move regmap initialization before all drivers activation
  MAINTAINERS: Update for Intel Speed Select Technology
  tools/power/x86: A tool to validate Intel Speed Select commands
  platform/x86: ISST: Restore state on resume
  platform/x86: ISST: Add Intel Speed Select PUNIT MSR interface
  platform/x86: ISST: Add Intel Speed Select mailbox interface via MSRs
  platform/x86: ISST: Add Intel Speed Select mailbox interface via PCI
  platform/x86: ISST: Add Intel Speed Select mmio interface
  platform/x86: ISST: Add IOCTL to Translate Linux logical CPU to PUNIT CPU number
  ...

1 files changed, 172 insertions, 0 deletions

diff --git a/include/uapi/linux/isst_if.h b/include/uapi/linux/isst_if.h
new file mode 100644
index 000000000000..d10b832c58c5
--- /dev/null
+++ b/include/uapi/linux/isst_if.h
@@ -0,0 +1,172 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Intel Speed Select Interface: OS to hardware Interface
+ * Copyright (c) 2019, Intel Corporation.
+ * All rights reserved.
+ *
+ * Author: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
+ */
+
+#ifndef __ISST_IF_H
+#define __ISST_IF_H
+
+#include <linux/types.h>
+
+/**
+ * struct isst_if_platform_info - Define platform information
+ * @api_version:	Version of the firmware document, which this driver
+ *			can communicate
+ * @driver_version:	Driver version, which will help user to send right
+ *			commands. Even if the firmware is capable, driver may
+ *			not be ready
+ * @max_cmds_per_ioctl:	Returns the maximum number of commands driver will
+ *			accept in a single ioctl
+ * @mbox_supported:	Support of mail box interface
+ * @mmio_supported:	Support of mmio interface for core-power feature
+ *
+ * Used to return output of IOCTL ISST_IF_GET_PLATFORM_INFO. This
+ * information can be used by the user space, to get the driver, firmware
+ * support and also number of commands to send in a single IOCTL request.
+ */
+struct isst_if_platform_info {
+	__u16 api_version;
+	__u16 driver_version;
+	__u16 max_cmds_per_ioctl;
+	__u8 mbox_supported;
+	__u8 mmio_supported;
+};
+
+/**
+ * struct isst_if_cpu_map - CPU mapping between logical and physical CPU
+ * @logical_cpu:	Linux logical CPU number
+ * @physical_cpu:	PUNIT CPU number
+ *
+ * Used to convert from Linux logical CPU to PUNIT CPU numbering scheme.
+ * The PUNIT CPU number is different than APIC ID based CPU numbering.
+ */
+struct isst_if_cpu_map {
+	__u32 logical_cpu;
+	__u32 physical_cpu;
+};
+
+/**
+ * struct isst_if_cpu_maps - structure for CPU map IOCTL
+ * @cmd_count:	Number of CPU mapping command in cpu_map[]
+ * @cpu_map[]:	Holds one or more CPU map data structure
+ *
+ * This structure used with ioctl ISST_IF_GET_PHY_ID to send
+ * one or more CPU mapping commands. Here IOCTL return value indicates
+ * number of commands sent or error number if no commands have been sent.
+ */
+struct isst_if_cpu_maps {
+	__u32 cmd_count;
+	struct isst_if_cpu_map cpu_map[1];
+};
+
+/**
+ * struct isst_if_io_reg - Read write PUNIT IO register
+ * @read_write:		Value 0: Read, 1: Write
+ * @logical_cpu:	Logical CPU number to get target PCI device.
+ * @reg:		PUNIT register offset
+ * @value:		For write operation value to write and for
+ *			for read placeholder read value
+ *
+ * Structure to specify read/write data to PUNIT registers.
+ */
+struct isst_if_io_reg {
+	__u32 read_write; /* Read:0, Write:1 */
+	__u32 logical_cpu;
+	__u32 reg;
+	__u32 value;
+};
+
+/**
+ * struct isst_if_io_regs - structure for IO register commands
+ * @cmd_count:	Number of io reg commands in io_reg[]
+ * @io_reg[]:	Holds one or more io_reg command structure
+ *
+ * This structure used with ioctl ISST_IF_IO_CMD to send
+ * one or more read/write commands to PUNIT. Here IOCTL return value
+ * indicates number of requests sent or error number if no requests have
+ * been sent.
+ */
+struct isst_if_io_regs {
+	__u32 req_count;
+	struct isst_if_io_reg io_reg[1];
+};
+
+/**
+ * struct isst_if_mbox_cmd - Structure to define mail box command
+ * @logical_cpu:	Logical CPU number to get target PCI device
+ * @parameter:		Mailbox parameter value
+ * @req_data:		Request data for the mailbox
+ * @resp_data:		Response data for mailbox command response
+ * @command:		Mailbox command value
+ * @sub_command:	Mailbox sub command value
+ * @reserved:		Unused, set to 0
+ *
+ * Structure to specify mailbox command to be sent to PUNIT.
+ */
+struct isst_if_mbox_cmd {
+	__u32 logical_cpu;
+	__u32 parameter;
+	__u32 req_data;
+	__u32 resp_data;
+	__u16 command;
+	__u16 sub_command;
+	__u32 reserved;
+};
+
+/**
+ * struct isst_if_mbox_cmds - structure for mailbox commands
+ * @cmd_count:	Number of mailbox commands in mbox_cmd[]
+ * @mbox_cmd[]:	Holds one or more mbox commands
+ *
+ * This structure used with ioctl ISST_IF_MBOX_COMMAND to send
+ * one or more mailbox commands to PUNIT. Here IOCTL return value
+ * indicates number of commands sent or error number if no commands have
+ * been sent.
+ */
+struct isst_if_mbox_cmds {
+	__u32 cmd_count;
+	struct isst_if_mbox_cmd mbox_cmd[1];
+};
+
+/**
+ * struct isst_if_msr_cmd - Structure to define msr command
+ * @read_write:		Value 0: Read, 1: Write
+ * @logical_cpu:	Logical CPU number
+ * @msr:		MSR number
+ * @data:		For write operation, data to write, for read
+ *			place holder
+ *
+ * Structure to specify MSR command related to PUNIT.
+ */
+struct isst_if_msr_cmd {
+	__u32 read_write; /* Read:0, Write:1 */
+	__u32 logical_cpu;
+	__u64 msr;
+	__u64 data;
+};
+
+/**
+ * struct isst_if_msr_cmds - structure for msr commands
+ * @cmd_count:	Number of mailbox commands in msr_cmd[]
+ * @msr_cmd[]:	Holds one or more msr commands
+ *
+ * This structure used with ioctl ISST_IF_MSR_COMMAND to send
+ * one or more MSR commands. IOCTL return value indicates number of
+ * commands sent or error number if no commands have been sent.
+ */
+struct isst_if_msr_cmds {
+	__u32 cmd_count;
+	struct isst_if_msr_cmd msr_cmd[1];
+};
+
+#define ISST_IF_MAGIC			0xFE
+#define ISST_IF_GET_PLATFORM_INFO	_IOR(ISST_IF_MAGIC, 0, struct isst_if_platform_info *)
+#define ISST_IF_GET_PHY_ID		_IOWR(ISST_IF_MAGIC, 1, struct isst_if_cpu_map *)
+#define ISST_IF_IO_CMD		_IOW(ISST_IF_MAGIC, 2, struct isst_if_io_regs *)
+#define ISST_IF_MBOX_COMMAND	_IOWR(ISST_IF_MAGIC, 3, struct isst_if_mbox_cmds *)
+#define ISST_IF_MSR_COMMAND	_IOWR(ISST_IF_MAGIC, 4, struct isst_if_msr_cmds *)
+#endif