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* [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub
@ 2020-05-29 13:42 Sandeep Singh
  2020-05-29 13:42 ` [PATCH v5 1/4] SFH: Add maintainers and documentation for AMD SFH based on HID framework Sandeep Singh
                   ` (4 more replies)
  0 siblings, 5 replies; 11+ messages in thread
From: Sandeep Singh @ 2020-05-29 13:42 UTC (permalink / raw)
  To: jikos, benjamin.tissoires, linux-kernel, linux-input,
	srinivas.pandruvada, jic23, linux-iio, hdegoede,
	Nehal-bakulchandra.Shah, andy.shevchenko, mail
  Cc: Shyam-sundar.S-k, Sandeep Singh

From: Sandeep Singh <sandeep.singh@amd.com>

AMD SFH(Sensor Fusion Hub) is HID based driver.SFH FW
is part of MP2 processor (MP2 which is an ARM® Cortex-M4
core based co-processor to x86) and it runs on MP2 where
in driver resides on X86.The driver functionalities are
divided  into three parts:-

1: amd-mp2-pcie:-       This module will communicate with MP2 FW and
                        provide that data into DRAM.
2: Client driver :-     This part for driver will use dram data and
                        convert that data into HID format based on
                        HID reports.
3: Transport driver :-  This part of driver will communicate with
                        HID core. Communication between devices and
                        HID core is mostly done via HID reports

In terms of architecture it is much more reassembles like
ISH(Intel Integrated Sensor Hub). However the major difference
is all the hid reports are generated as part of kernel driver.
AMD SFH driver taken reference from ISH in terms of
design and functionalities at fewer location.

AMD sensor fusion Hub is part of a SOC 17h family based platforms.
The solution is working well on several OEM products.
AMD SFH uses HID over PCIe bus.

Sandeep Singh (4):
  SFH: Add maintainers and documentation for AMD SFH based on HID
    framework
  SFH: PCI driver to add support of AMD sensor fusion Hub using HID
    framework
  SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH)
  SFH: Create HID report to Enable support of AMD sensor fusion Hub
    (SFH)

Changes since v1:
        -Fix auto build test warnings
        -Fix warnings captured using smatch
        -Changes suggested by Dan Carpenter

Links of the review comments for v1:
        [1] https://patchwork.kernel.org/patch/11325163/
        [2] https://patchwork.kernel.org/patch/11325167/
        [3] https://patchwork.kernel.org/patch/11325171/
        [4] https://patchwork.kernel.org/patch/11325187/


Changes since v2:
        -Debugfs divided into another patch
        -Fix some cosmetic changes
        -Fix for review comments
         Reported and Suggested by:-  Srinivas Pandruvada

Links of the review comments for v2:
        [1] https://patchwork.kernel.org/patch/11355491/
        [2] https://patchwork.kernel.org/patch/11355495/
        [3] https://patchwork.kernel.org/patch/11355499/
        [4] https://patchwork.kernel.org/patch/11355503/


Changes since v3:
	-removed debugfs suggested by - Benjamin Tissoires

Links of the review comments for v3:
	[1] https://lkml.org/lkml/2020/2/11/1256
	[2] https://lkml.org/lkml/2020/2/11/1257
	[3] https://lkml.org/lkml/2020/2/11/1258
	[4] https://lkml.org/lkml/2020/2/11/1259
	[5] https://lkml.org/lkml/2020/2/11/1260 


Changes since v4:
	- Rework done based on review comments by - Andy Shevchenko
	- changes done based on suggested by -Richard Neumann

Links of the review comments for v4:
	[1] https://lkml.org/lkml/2020/2/26/1360
	[2] https://lkml.org/lkml/2020/2/26/1361
	[3] https://lkml.org/lkml/2020/2/26/1362
	[4] https://lkml.org/lkml/2020/2/26/1363
	[5] https://lkml.org/lkml/2020/2/27/1


Sandeep Singh (4):
  SFH: Add maintainers and documentation for AMD SFH based      on HID
    framework
  SFH: PCI driver to add support of AMD sensor fusion Hub using HID
    framework
  SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH
  SFH: Create HID report to Enable support of AMD sensor fusion Hub
    (SFH)

 Documentation/hid/amd-sfh-hid.rst                  | 160 +++++
 MAINTAINERS                                        |   8 +
 drivers/hid/Kconfig                                |   2 +
 drivers/hid/Makefile                               |   1 +
 drivers/hid/amd-sfh-hid/Kconfig                    |  21 +
 drivers/hid/amd-sfh-hid/Makefile                   |  16 +
 drivers/hid/amd-sfh-hid/amd_mp2_pcie.c             | 196 +++++++
 drivers/hid/amd-sfh-hid/amd_mp2_pcie.h             | 137 +++++
 drivers/hid/amd-sfh-hid/amdsfh-hid-client.c        | 256 ++++++++
 drivers/hid/amd-sfh-hid/amdsfh-hid.c               | 179 ++++++
 drivers/hid/amd-sfh-hid/amdsfh-hid.h               |  84 +++
 .../hid_descriptor/amd_sfh_hid_descriptor.c        | 251 ++++++++
 .../hid_descriptor/amd_sfh_hid_descriptor.h        | 125 ++++
 .../hid_descriptor/amd_sfh_hid_report_descriptor.h | 642 +++++++++++++++++++++
 14 files changed, 2078 insertions(+)
 create mode 100644 Documentation/hid/amd-sfh-hid.rst
 create mode 100644 drivers/hid/amd-sfh-hid/Kconfig
 create mode 100644 drivers/hid/amd-sfh-hid/Makefile
 create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.c
 create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.h
 create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid-client.c
 create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid.c
 create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid.h
 create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.c
 create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.h
 create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_descriptor.h

-- 
2.7.4


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [PATCH v5 1/4] SFH: Add maintainers and documentation for AMD SFH based  on HID framework
  2020-05-29 13:42 [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Sandeep Singh
@ 2020-05-29 13:42 ` Sandeep Singh
  2020-05-29 13:42 ` [PATCH v5 2/4] SFH: PCI driver to add support of AMD sensor fusion Hub using " Sandeep Singh
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 11+ messages in thread
From: Sandeep Singh @ 2020-05-29 13:42 UTC (permalink / raw)
  To: jikos, benjamin.tissoires, linux-kernel, linux-input,
	srinivas.pandruvada, jic23, linux-iio, hdegoede,
	Nehal-bakulchandra.Shah, andy.shevchenko, mail
  Cc: Shyam-sundar.S-k, Sandeep Singh


[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #0: Type: text/plain; charset=y, Size: 10079 bytes --]

From: Sandeep Singh <sandeep.singh@amd.com>

Add Maintainers for AMD SFH(SENSOR FUSION HUB) Solution and work flow
document.

Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
---
 Documentation/hid/amd-sfh-hid.rst | 160 ++++++++++++++++++++++++++++++++++++++
 MAINTAINERS                       |   8 ++
 2 files changed, 168 insertions(+)
 create mode 100644 Documentation/hid/amd-sfh-hid.rst

diff --git a/Documentation/hid/amd-sfh-hid.rst b/Documentation/hid/amd-sfh-hid.rst
new file mode 100644
index 0000000..eb60ac1
--- /dev/null
+++ b/Documentation/hid/amd-sfh-hid.rst
@@ -0,0 +1,160 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+AMD Sensor Fusion Hub:-
+======================
+AMD Sensor Fusion Hub is part of a SOC starting from Ryzen based platforms.
+The solution is working well on several OEM products. AMD
+SFH uses HID over PCIe bus. In terms of architecture
+it is much more resembles like ISH .However the major diffrence is all
+The hid reports are generated as part of kernel driver.
+
+Block Diagram:-
+=============
+	-------------------------------
+	|  HID User Space Applications  |
+	-------------------------------
+---------------------------------------------
+	 ---------------------------------
+	|		HID Core          |
+	 ---------------------------------
+
+	 ---------------------------------
+	|     AMD HID Transport Driver    |
+	 ---------------------------------
+
+	 --------------------------------
+	|     AMD HID Client Driver      |
+	|	with HID Report Generator|
+	 --------------------------------
+
+	 --------------------------------
+	|     AMD MP2 PCIe Driver         |
+	 --------------------------------
+---------------------------------------------
+	  -------------------------------
+	|     SFH MP2 Processor         |
+	 --------------------------------
+
+
+AMD HID Transport Layer :-
+***************************
+AMD SFH transport is also implemented as a bus. Each client application
+executing in the AMD MP2 is registered as a device on this bus.
+MP2 which is an ARM® Cortex-M4 core based co-processor to x86.
+The driver, which binds each device (AMD SFH HID driver) identifies
+the device type and registers with the hid core. Transport drivers
+attach a constant "struct hid_ll_driver" object with each device.
+Once a device is registered with HID core, the callbacks provided via
+this struct are used by HID core to communicate with the device.
+AMD HID Transport driver implements the synchronous calls.
+
+AMD HID Client Driver:-
+**********************
+This driver is responsible to implement HID request and descriptors.
+As firmware is OS agnostic, HID client driver fills the HID request
+structure and descriptors. HID client driver is in complex in nature
+as it is interface between MP2 PCIe driver and HID. HID client driver
+initialized the MP2 PCIe driver and holds the instance of MP2 driver.
+It identified the number of sensors connected using MP2-PCIe driver and
+based on that allocate the DRAM address for each and every sensor and
+pass it to MP2-PCIe driver.
+On enumeration of each sensor, client driver fills out the HID Descriptor
+structure and HID input report structure. HID Feature report structure can
+be optional.  The report descriptor structure varies sensor to sensor.
+Now on enumeration client driver does two major things
+1.	Register the HID sensor client to virtual bus (Platform driver) and bind it.
+2.	Probes the AMD HID transport driver. Which in turns register device to the core.
+
+AMD MP2 PCIe Driver:-
+********************
+MP2 PCIe driver is responsible for making all transaction with the firmware over
+PCIe.The connection establishment between firmware and MP2 PCIe driver happens here.
+
+The communication between X86 and MP2 is spilt into three parts.
+1. Command Transfer => C2P Mailbox Register are used
+2. Data Transfer => DRAM
+
+Commands are sent to MP2 using C2P Mail Box registers. These C2P  registers
+are common between x86 and MP2. Writing into C2P Message register generate
+interrupt to MP2.  The client driver allocates the physical memory and send
+the same to MP2 for data transfer. MP2 firmware uses HUBIF interface
+to access DRAM memory. For Firmware always write minimum 32 bytes
+into DRAM.So it is expected that driver shall allocate minimum 32 bytes DRAM space.
+
+Enumeration and Probing flow:-
+*****************************
+       HID             AMD            AMD                       AMD -PCIe             MP2
+       Core         Transport      Client Driver                 Driver               FW
+	|		|	       |                           |                 |
+	|		|       on Boot Driver Loaded	  	   |                 |
+	|		|	       |                           |                 |
+	|		|	       |----MP2-PCIe Int---------> |                 |
+	|		|              |			   |                 |
+	|		|	       |---Get Number of sensors-> |                 |
+	|		|              |                       Read P2C              |
+	|		|	       |			Register             |
+	|		|              |                           |                 |
+	|               |              | Loop(for No of Sensors)   |                 |
+	|		|	       |----------------------|    |                 |
+	|		|              | Create HID Descriptor|    |                 |
+	|		|	       | Create Input  report |    |                 |
+	|		|              |  Descriptor Map      |    |                 |
+	|		|	       |  the MP2 FW Index to |    |                 |
+	|		|              |   HID Index          |    |                 |
+	|		|	       | Allocate the DRAM    |  Enable              |
+        |		|	       |	address       |  Sensors             |
+	|		|              |----------------------|    |                 |
+	|		| HID transport|                           |    Enable       |
+	|	        |<--Probe------|                           |---Sensor CMD--> |
+	|		| Create the   |			   |                 |
+	|		| HID device   |                           |                 |
+	|               |    (MFD)     |                           |                 |
+	|		| by Populating|			   |                 |
+        |               |  the HID     |                           |                 |
+	|               |  ll_driver   |                           |                 |
+	| HID           |	       |			   |                 |
+	|  add          |              |                           |                 |
+	|Device         |              |                           |                 |
+	|<------------- |	       |			   |                 |
+
+
+Data Flow from Application to the AMD SFH Driver:-
+*************************************************
+
+	|	       |              |	  	 	          |		    |
+Get   	|	       |	      |			          |                 |
+Input 	|	       |	      |			          |                 |
+Report	|              |              |                           |                 |
+--->  	|              |              |                           |                 |
+	|HID_req       |              |                           |                 |
+	|get_report    |              |                           |                 |
+	|------------->|              |                           |                 |
+	|              | HID_get_input|                           |                 |
+	|              |  report      |                           |                 |
+	|              |------------->|------------------------|  |                 |
+	|              |              |  Read the DRAM data for|  |                 |
+	|              |              |  requsted sensor and   |  |                 |
+	|              |              |  create the HID input  |  |                 |
+	|              |              |  report                |  |                 |
+	|              |              |------------------------|  |                 |
+	|              |Data received |                           |                 |
+	|              | in HID report|                           |                 |
+ To	|<-------------|<-------------|                           |                 |
+Applications           |              |                           |                 |
+<-------|              |              |                           |                 |
+
+
+Data Flow from AMD SFH Driver to Application:-
+**********************************************
+      |		  |               |	            	          |		    |
+      |           |               |------------------------|      |                 |
+      |           |               |Periodically Read       |      |                 |
+      |           |               |the data for all        |      |                 |
+      |           |               |enumerated sensors      |      |                 |
+      |           |               |from the dram and create|      |                 |
+      |           |               | HID Input reports      |      |                 |
+      |           |               |------------------------|      |                 |
+      |           |HID Input      |                               |                 |
+      |           |Input report   |                               |                 |
+   <----submit to Application-----|                               |                 |
+      |           |               |                               |                 |
diff --git a/MAINTAINERS b/MAINTAINERS
index 56765f5..7cfeb5a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -884,6 +884,14 @@ S:	Supported
 F:	drivers/net/ethernet/amd/xgbe/
 F:	arch/arm64/boot/dts/amd/amd-seattle-xgbe*.dtsi
 
+AMD SENSOR FUSION HUB DRIVER
+M:	Nehal Shah <nehal-bakulchandra.shah@amd.com>
+M:	Sandeep Singh <sandeep.singh@amd.com>
+L:	linux-input@vger.kernel.org
+S:	Maintained
+F:	Documentation/hid/amd-sfh*
+F:	drivers/hid/amd-sfh-hid/
+
 ANALOG DEVICES INC AD5686 DRIVER
 M:	Stefan Popa <stefan.popa@analog.com>
 L:	linux-pm@vger.kernel.org
-- 
2.7.4


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [PATCH v5 2/4] SFH: PCI driver to add support of AMD sensor fusion Hub using HID framework
  2020-05-29 13:42 [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Sandeep Singh
  2020-05-29 13:42 ` [PATCH v5 1/4] SFH: Add maintainers and documentation for AMD SFH based on HID framework Sandeep Singh
@ 2020-05-29 13:42 ` Sandeep Singh
  2020-05-29 14:03   ` Andy Shevchenko
  2020-05-29 13:42 ` [PATCH v5 3/4] SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH Sandeep Singh
                   ` (2 subsequent siblings)
  4 siblings, 1 reply; 11+ messages in thread
From: Sandeep Singh @ 2020-05-29 13:42 UTC (permalink / raw)
  To: jikos, benjamin.tissoires, linux-kernel, linux-input,
	srinivas.pandruvada, jic23, linux-iio, hdegoede,
	Nehal-bakulchandra.Shah, andy.shevchenko, mail
  Cc: Shyam-sundar.S-k, Sandeep Singh

From: Sandeep Singh <sandeep.singh@amd.com>

AMD SFH uses HID over PCIe bus.SFH fw is part of MP2
processor (MP2 which is an ARM® Cortex-M4 core based
co-processor to x86) and it runs on MP2 where in driver resides
on X86. This part of module will communicate with MP2 FW and
provide that data into DRAM

Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Reported-by: kbuild test robot <lkp@intel.com>
---
 drivers/hid/Kconfig                    |   2 +
 drivers/hid/Makefile                   |   1 +
 drivers/hid/amd-sfh-hid/Kconfig        |  21 ++++
 drivers/hid/amd-sfh-hid/Makefile       |  16 +++
 drivers/hid/amd-sfh-hid/amd_mp2_pcie.c | 196 +++++++++++++++++++++++++++++++++
 drivers/hid/amd-sfh-hid/amd_mp2_pcie.h | 137 +++++++++++++++++++++++
 6 files changed, 373 insertions(+)
 create mode 100644 drivers/hid/amd-sfh-hid/Kconfig
 create mode 100644 drivers/hid/amd-sfh-hid/Makefile
 create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.c
 create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.h

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 494a39e..b253ad1 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -1155,4 +1155,6 @@ source "drivers/hid/i2c-hid/Kconfig"
 
 source "drivers/hid/intel-ish-hid/Kconfig"
 
+source "drivers/hid/amd-sfh-hid/Kconfig"
+
 endmenu
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index bfefa36..15a08e8 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -139,3 +139,4 @@ obj-$(CONFIG_I2C_HID)		+= i2c-hid/
 
 obj-$(CONFIG_INTEL_ISH_HID)	+= intel-ish-hid/
 obj-$(INTEL_ISH_FIRMWARE_DOWNLOADER)	+= intel-ish-hid/
+obj-$(CONFIG_AMD_SFH_HID)       += amd-sfh-hid/
diff --git a/drivers/hid/amd-sfh-hid/Kconfig b/drivers/hid/amd-sfh-hid/Kconfig
new file mode 100644
index 0000000..b78d8f9
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/Kconfig
@@ -0,0 +1,21 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menu "AMD SFH HID support"
+	depends on X86_64 || COMPILE_TEST
+	depends on PCI
+
+config AMD_SFH_HID
+	tristate "AMD Sensor Fusion Hub"
+	select HID
+	help
+	If you say yes to this option, support will be included for the AMD
+	Sensor Fusion Hub.
+	This driver will enable sensors functionality to user through HID
+	framework. Basically this driver will get data from MP2 FW
+	and provide that data to HID framework.
+	MP2 which is an ARM® Cortex-M4 core based co-processor to x86.
+
+	This driver can also be built as modules. If so, the modules will
+	be  called amd-mp2-pcie and amd-sfhtp-hid.
+	Say Y or M here if you want to support AMD SFH. If unsure, say N.
+
+endmenu
diff --git a/drivers/hid/amd-sfh-hid/Makefile b/drivers/hid/amd-sfh-hid/Makefile
new file mode 100644
index 0000000..c11bf63
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/Makefile
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile - AMD SFH HID drivers
+# Copyright (c) 2020-2021, Advanced Micro Devices, Inc.
+#
+
+ccflags-m := -Werror
+obj-$(CONFIG_AMD_SFH_HID) += amd-mp2-pcie.o
+amd-mp2-pcie-objs := amd_mp2_pcie.o
+
+obj-$(CONFIG_AMD_SFH_HID) +=amd-sfhtp-hid.o
+amd-sfhtp-hid-objs := amdsfh-hid.o
+amd-sfhtp-hid-objs+= amdsfh-hid-client.o
+amd-sfhtp-hid-objs+= hid_descriptor/amd_sfh_hid_descriptor.o
+
+ccflags-y += -I$(srctree)/$(src)/
diff --git a/drivers/hid/amd-sfh-hid/amd_mp2_pcie.c b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.c
new file mode 100644
index 0000000..9ddfc77
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.c
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AMD MP2 PCIe communication driver
+ *
+ * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
+ *          Nehal Bakulchandra Shah <Nehal-bakulchandra.Shah@amd.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include "amd_mp2_pcie.h"
+
+#define DRIVER_NAME	"pcie_mp2_amd"
+#define DRIVER_DESC	"AMD(R) PCIe MP2 Communication Driver"
+
+#define	ACEL_EN		BIT(ACCEL_IDX)
+#define	GYRO_EN		BIT(GYRO_IDX)
+#define MAGNO_EN	BIT(MAG_IDX)
+#define ALS_EN		BIT(AMBIENT_LIGHT_IDX)
+
+void amd_start_sensor(struct pci_dev *pdev, struct amd_mp2_sensor_info info)
+{
+	struct amd_mp2_dev *privdata = pci_get_drvdata(pdev);
+	union sfh_command_parameter cmd_param;
+	union sfh_cmd_base cmd_base;
+
+	/*fill up command register*/
+	cmd_base.ul = 0;
+	cmd_base.s.cmd_id = enable_sensor;
+	cmd_base.s.period = info.period;
+	cmd_base.s.sensor_id = info.sensor_idx;
+
+	/*fill up command param register*/
+	cmd_param.ul = 0;
+	cmd_param.s.buffer_layout = 1;
+	cmd_param.s.buffer_length = 16;
+
+	write64(info.phy_address, privdata->mmio + AMD_C2P_MSG2);
+	writel(cmd_param.ul, privdata->mmio + AMD_C2P_MSG1);
+	writel(cmd_base.ul, privdata->mmio + AMD_C2P_MSG0);
+}
+EXPORT_SYMBOL_GPL(amd_start_sensor);
+
+void amd_stop_sensor(struct pci_dev *pdev, u16 sensor_idx)
+{
+	struct amd_mp2_dev *privdata = pci_get_drvdata(pdev);
+	union sfh_cmd_base cmd_base;
+
+	/* fill up command register */
+	cmd_base.ul = 0;
+	cmd_base.s.cmd_id = disable_sensor;
+	cmd_base.s.period = 0;
+	cmd_base.s.sensor_id = sensor_idx;
+
+	write64(0x0, privdata->mmio + AMD_C2P_MSG2);
+	writel(cmd_base.ul, privdata->mmio + AMD_C2P_MSG0);
+}
+EXPORT_SYMBOL_GPL(amd_stop_sensor);
+
+void amd_stop_all_sensors(struct pci_dev *pdev)
+{
+	struct amd_mp2_dev *privdata = pci_get_drvdata(pdev);
+	union sfh_cmd_base cmd_base;
+
+	/*fill up command register */
+	cmd_base.ul = 0;
+	cmd_base.s.cmd_id = stop_all_sensors;
+	cmd_base.s.period = 0;
+	cmd_base.s.sensor_id = 0;
+
+	writel(cmd_base.ul, privdata->mmio + AMD_C2P_MSG0);
+}
+EXPORT_SYMBOL_GPL(amd_stop_all_sensors);
+
+int amd_mp2_get_sensor_num(struct pci_dev *dev, u8 *sensor_id)
+{
+	struct amd_mp2_dev *privdata = pci_get_drvdata(dev);
+	int activestatus;
+	int num_of_sensors = 0;
+
+	if (!sensor_id)
+		return -EINVAL;
+
+	privdata->eventreg.activecontrolstatus =
+			readl(privdata->mmio + AMD_P2C_MSG3);
+	activestatus = privdata->eventreg.activecontrolstatus >> 4;
+
+	if (ACEL_EN  & activestatus) {
+		sensor_id[num_of_sensors] = ACCEL_IDX;
+		num_of_sensors++;
+	}
+	if (GYRO_EN & activestatus) {
+		sensor_id[num_of_sensors] = GYRO_IDX;
+		num_of_sensors++;
+	}
+	if (MAGNO_EN & activestatus) {
+		sensor_id[num_of_sensors] = MAG_IDX;
+		num_of_sensors++;
+	}
+
+	if (ALS_EN & activestatus) {
+		sensor_id[num_of_sensors] = AMBIENT_LIGHT_IDX;
+		num_of_sensors++;
+	}
+
+	return num_of_sensors;
+}
+EXPORT_SYMBOL_GPL(amd_mp2_get_sensor_num);
+
+static int amd_mp2_pci_init(struct amd_mp2_dev *privdata, struct pci_dev *pdev)
+{
+	int rc;
+
+	pci_set_drvdata(pdev, privdata);
+
+	rc = pcim_enable_device(pdev);
+	if (rc)
+		goto err_pci_enable;
+
+	rc = pcim_iomap_regions(pdev, BIT(2), DRIVER_NAME);
+	if (rc)
+		goto err_pci_enable;
+
+	privdata->mmio = pcim_iomap_table(pdev)[2];
+	pci_set_master(pdev);
+
+	rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+	if (rc) {
+		rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+		if (rc)
+			goto err_dma_mask;
+	}
+
+	return 0;
+
+err_dma_mask:
+	pci_clear_master(pdev);
+err_pci_enable:
+	pci_set_drvdata(pdev, NULL);
+	return rc;
+}
+
+static int amd_mp2_pci_probe(struct pci_dev *pdev,
+			     const struct pci_device_id *id)
+{
+	struct amd_mp2_dev *privdata;
+	int rc;
+
+	dev_info(&pdev->dev, "MP2 device found [%04x:%04x] (rev %x)\n",
+		 pdev->vendor, pdev->device, pdev->revision);
+
+	privdata = devm_kzalloc(&pdev->dev, sizeof(*privdata), GFP_KERNEL);
+	if (!privdata)
+		rc = -ENOMEM;
+
+	privdata->pdev = pdev;
+	rc = amd_mp2_pci_init(privdata, pdev);
+	if (rc)
+		return rc;
+	return 0;
+}
+
+static void amd_mp2_pci_remove(struct pci_dev *pdev)
+{
+	struct amd_mp2_dev *privdata = pci_get_drvdata(pdev);
+
+	amd_stop_all_sensors(privdata->pdev);
+	pci_clear_master(pdev);
+	pci_set_drvdata(pdev, NULL);
+}
+
+static const struct pci_device_id amd_mp2_pci_tbl[] = {
+	{PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_MP2)},
+	{0}
+};
+MODULE_DEVICE_TABLE(pci, amd_mp2_pci_tbl);
+
+static struct pci_driver amd_mp2_pci_driver = {
+	.name		= DRIVER_NAME,
+	.id_table	= amd_mp2_pci_tbl,
+	.probe		= amd_mp2_pci_probe,
+	.remove		= amd_mp2_pci_remove,
+};
+
+module_pci_driver(amd_mp2_pci_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_AUTHOR("Shyam Sundar S K <Shyam-sundar.S-k@amd.com>");
+MODULE_AUTHOR("Nehal Bakulchandra Shah <Nehal-bakulchandra.Shah@amd.com>");
diff --git a/drivers/hid/amd-sfh-hid/amd_mp2_pcie.h b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.h
new file mode 100644
index 0000000..577ad24
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/amd_mp2_pcie.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * AMD MP2 PCIe communication driver
+ *
+ * Authors: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
+ *          Nehal Bakulchandra Shah <Nehal-bakulchandra.Shah@amd.com>
+ */
+
+#ifndef PCIE_MP2_AMD_H
+#define PCIE_MP2_AMD_H
+#include <linux/io-64-nonatomic-lo-hi.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+#define PCI_DEVICE_ID_AMD_MP2	0x15E4
+
+/* MP2 C2P Message Registers */
+#define AMD_C2P_MSG0	0x10500
+#define AMD_C2P_MSG1	0x10504
+#define AMD_C2P_MSG2	0x10508
+#define AMD_C2P_MSG3	0x1050c
+#define AMD_C2P_MSG4	0x10510
+#define AMD_C2P_MSG5	0x10514
+#define AMD_C2P_MSG6	0x10518
+#define AMD_C2P_MSG7	0x1051c
+#define AMD_C2P_MSG8	0x10520
+#define AMD_C2P_MSG9	0x10524
+
+/* MP2 P2C Message Registers */
+#define AMD_P2C_MSG0	0x10680 /*Do not use*/
+#define AMD_P2C_MSG1	0x10684
+#define AMD_P2C_MSG2	0x10688
+#define AMD_P2C_MSG3	0x1068C /*MP2 debug info*/
+#define AMD_P2C_MSG_INTEN	0x10690 /*MP2 int gen register*/
+#define AMD_P2C_MSG_INTSTS	0x10694 /*Interrupt sts*/
+
+#define write64 lo_hi_writeq
+#define read64 lo_hi_readq
+
+/*
+ * SFH Command registers
+ */
+union sfh_cmd_base {
+	u32 ul;
+	struct {
+		u32 cmd_id : 8;
+		u32 sensor_id : 8;
+		u32 period : 16;
+	} s;
+};
+
+union sfh_command_parameter {
+	u32 ul;
+	struct {
+		u32 buffer_layout : 2;
+		u32 buffer_length : 6;
+		u32 rsvd : 24;
+	} s;
+};
+
+struct sfh_command_register {
+	union sfh_cmd_base cmd_base;
+	union sfh_command_parameter cmd_param;
+	phys_addr_t phy_addr;
+};
+
+enum command_id {
+	non_operation = 0,
+	enable_sensor = 1,
+	disable_sensor = 2,
+	dump_sensorinfo = 3,
+	numberof_sensordiscovered = 4,
+	who_am_i_regchipid = 5,
+	set_dcd_data = 6,
+	get_dcd_data = 7,
+	stop_all_sensors = 8,
+	invalid_cmd = 0xf,
+};
+
+/**
+ * union sfh_event_base : bit access of C2P commands
+ * @response: bit: 0..3 SFI response_type
+ * @status: bit: 6..5 status_type
+ * @out_in_c2p: bit: 5 0- output in DRAM,1-in C2PMsg
+ * @length: bit: 8..13 length
+ * @dbg:bit: 14.15 dbg msg include in p2c msg 1-2
+ * @sensor_id:bit: 16..23 Sensor ID
+ * @rsvd:bit: 24..31 Reservered for future use
+ */
+union sfh_event_base {
+	u32 ul;
+	struct {
+		u32 response : 4;
+		u32 status : 3;
+		u32 out_in_c2p : 1;
+		u32 length : 6;
+		u32 dbg : 2;
+		u32 sensor_id : 8;
+		u32 rsvd : 8;
+	} s;
+};
+
+struct sfi_event_register {
+	union sfh_event_base evtbase;
+	u32 debuginfo1;
+	u32 debuginfo2;
+	u32 activecontrolstatus;
+};
+
+enum sensor_idx {
+	ACCEL_IDX               = 0,
+	GYRO_IDX                = 1,
+	MAG_IDX                 = 2,
+	AMBIENT_LIGHT_IDX       = 19,
+	NUM_ALL_SENSOR_CONSUMERS
+};
+
+struct amd_mp2_dev {
+	struct pci_dev *pdev;
+	void __iomem *mmio;
+	union sfh_event_base eventval;
+	struct sfi_event_register eventreg;
+	struct delayed_work work;
+	void *ctx;
+	void *cl_data;
+};
+
+struct amd_mp2_sensor_info {
+	u8 sensor_idx;
+	u32 period;
+	phys_addr_t phy_address;
+};
+
+void amd_start_sensor(struct pci_dev *pdev, struct amd_mp2_sensor_info info);
+void amd_stop_sensor(struct pci_dev *pdev, u16 sensor_idx);
+void amd_stop_all_sensors(struct pci_dev *pdev);
+int amd_mp2_get_sensor_num(struct pci_dev *dev, u8 *sensor_id);
+#endif
-- 
2.7.4


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [PATCH v5 3/4] SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH
  2020-05-29 13:42 [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Sandeep Singh
  2020-05-29 13:42 ` [PATCH v5 1/4] SFH: Add maintainers and documentation for AMD SFH based on HID framework Sandeep Singh
  2020-05-29 13:42 ` [PATCH v5 2/4] SFH: PCI driver to add support of AMD sensor fusion Hub using " Sandeep Singh
@ 2020-05-29 13:42 ` Sandeep Singh
  2020-05-29 14:20   ` Andy Shevchenko
  2020-05-29 13:42 ` [PATCH v5 4/4] SFH: Create HID report to Enable support of AMD sensor fusion Hub (SFH) Sandeep Singh
  2020-05-29 14:21 ` [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Andy Shevchenko
  4 siblings, 1 reply; 11+ messages in thread
From: Sandeep Singh @ 2020-05-29 13:42 UTC (permalink / raw)
  To: jikos, benjamin.tissoires, linux-kernel, linux-input,
	srinivas.pandruvada, jic23, linux-iio, hdegoede,
	Nehal-bakulchandra.Shah, andy.shevchenko, mail
  Cc: Shyam-sundar.S-k, Sandeep Singh

From: Sandeep Singh <sandeep.singh@amd.com>

This part of module will provide the interaction between HID framework
and client driver.This modules will registered client driver with
HID framework.

Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Reported-by: kbuild test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/hid/amd-sfh-hid/amdsfh-hid-client.c | 256 ++++++++++++++++++++++++++++
 drivers/hid/amd-sfh-hid/amdsfh-hid.c        | 179 +++++++++++++++++++
 drivers/hid/amd-sfh-hid/amdsfh-hid.h        |  84 +++++++++
 3 files changed, 519 insertions(+)
 create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid-client.c
 create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid.c
 create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid.h

diff --git a/drivers/hid/amd-sfh-hid/amdsfh-hid-client.c b/drivers/hid/amd-sfh-hid/amdsfh-hid-client.c
new file mode 100644
index 0000000..c2e7d2e
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/amdsfh-hid-client.c
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ *  AMD SFH Client Driver
+ *  Author: Nehal Bakulchandra Shah <Nehal-Bakulchandra.Shah@amd.com>
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/hid.h>
+#include <linux/list.h>
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <linux/dma-mapping.h>
+#include "amdsfh-hid.h"
+#include "amd_mp2_pcie.h"
+#include "hid_descriptor/amd_sfh_hid_descriptor.h"
+
+#define DRIVER_DESC	"AMD(R) PCIe MP2 Communication Client Driver"
+#define DRIVER_NAME "AMD_SFH_HID_CLIENT"
+#define PERIOD  200
+
+struct request_list {
+	struct hid_device *hid;
+	struct list_head list;
+	u8 report_id;
+	u8 sensor_idx;
+	u8 report_type;
+	u8 current_index;
+};
+
+static struct request_list req_list;
+static struct amdtp_cl_data *cl_data_context;
+
+void amd_sfh_set_report(struct hid_device *hid, int report_id,
+			int report_type)
+{
+	struct amdtp_hid_data *hid_data = hid->driver_data;
+	struct amdtp_cl_data *cli_data = hid_data->cli_data;
+	int i;
+
+	for (i = 0; i < cli_data->num_hid_devices; i++) {
+		if (cli_data->hid_sensor_hubs[i] == hid) {
+			cli_data->cur_hid_dev = i;
+			break;
+		}
+	}
+	amdtp_hid_wakeup(hid);
+}
+EXPORT_SYMBOL(amd_sfh_set_report);
+
+void amd_sfh_get_report(struct hid_device *hid, int report_id,
+			int report_type)
+{
+	struct amdtp_hid_data *hid_data = hid->driver_data;
+	struct amdtp_cl_data *cli_data = hid_data->cli_data;
+	int i;
+
+	for (i = 0; i < cli_data->num_hid_devices; i++) {
+		if (cli_data->hid_sensor_hubs[i] == hid) {
+			struct request_list *new_request = kzalloc
+				  (sizeof(*new_request), GFP_KERNEL);
+			new_request->current_index = i;
+			new_request->sensor_idx = cli_data->sensor_idx[i];
+			new_request->hid = hid;
+			new_request->report_type = report_type;
+			new_request->report_id = report_id;
+			cli_data->report_id[i] = report_id;
+			cli_data->request_done[i] = false;
+			list_add(&new_request->list, &req_list.list);
+			break;
+		}
+	}
+	schedule_delayed_work(&cli_data->work, 0);
+}
+EXPORT_SYMBOL(amd_sfh_get_report);
+
+static void amd_sfh_work(struct work_struct *work)
+{
+	struct amdtp_cl_data *cli_data = amd_sfh_cldata(work);
+	struct request_list *req_node;
+	u8 report_size = 0;
+	u8 current_index;
+	u8 sensor_index;
+	u8 report_id;
+	u8 node_type;
+
+	req_node = list_last_entry(&req_list.list, struct request_list, list);
+	list_del(&req_node->list);
+	current_index = req_node->current_index;
+	sensor_index = req_node->current_index;
+	report_id = req_node->report_id;
+	node_type = req_node->report_type;
+
+	if (node_type == HID_FEATURE_REPORT) {
+		report_size = get_feature_report(sensor_index, report_id,
+						 cli_data->feature_report
+						 [current_index]);
+	} else if (node_type == HID_INPUT_REPORT) {
+		report_size = get_input_report(sensor_index, report_id,
+					       cli_data->input_report
+						[current_index],
+						cli_data->sensor_virt_addr
+						[current_index]);
+	}
+
+	hid_input_report(cli_data->hid_sensor_hubs[current_index],
+			 cli_data->report_type[current_index],
+				 cli_data->input_report[current_index],
+				report_size, 0);
+	cli_data->cur_hid_dev = current_index;
+	cli_data->sensor_requested_cnt[current_index] = 0;
+	amdtp_hid_wakeup(cli_data->hid_sensor_hubs[current_index]);
+}
+
+static void amd_sfh_work_buffer(struct work_struct *work)
+{
+	struct amdtp_cl_data *cli_data = cl_data_context;
+	unsigned int i;
+	u8 report_size = 0;
+
+	for (i = 0; i < cli_data->num_hid_devices; i++) {
+		report_size = get_input_report(cli_data->sensor_idx[i],
+					       cli_data->report_id[i],
+				cli_data->input_report[i],
+				cli_data->sensor_virt_addr[i]);
+		hid_input_report(cli_data->hid_sensor_hubs[i],
+				 HID_INPUT_REPORT,
+				 cli_data->input_report[i], report_size, 0);
+		}
+
+	schedule_delayed_work(&cli_data->work_buffer, PERIOD);
+}
+
+static int amd_sfh_hid_client_probe(struct platform_device *pdev)
+{
+	struct amd_mp2_sensor_info info;
+	int rc = 0;
+	int i;
+	struct amdtp_cl_device *cl_dev;
+	struct amdtp_cl_data *cl_data;
+	u32 feature_report_size = 0;
+	u32 input_report_size = 0;
+
+	cl_dev = devm_kzalloc(&pdev->dev, sizeof(*cl_dev), GFP_KERNEL);
+	if (!cl_dev)
+		return -ENOMEM;
+
+	cl_dev->pdev = pci_get_device(PCI_VENDOR_ID_AMD,
+				      PCI_DEVICE_ID_AMD_MP2, NULL);
+	if (!cl_dev->pdev)
+		return -ENOMEM;
+
+	cl_data = kzalloc(sizeof(*cl_data), GFP_KERNEL);
+	cl_data->num_hid_devices = amd_mp2_get_sensor_num
+				   (cl_dev->pdev, &cl_data->sensor_idx[0]);
+
+	INIT_DELAYED_WORK(&cl_data->work, amd_sfh_work);
+	INIT_DELAYED_WORK(&cl_data->work_buffer, amd_sfh_work_buffer);
+	INIT_LIST_HEAD(&req_list.list);
+
+	for (i = 0; i < cl_data->num_hid_devices; i++) {
+		cl_data->sensor_virt_addr[i] = dma_alloc_coherent
+			(&cl_dev->pdev->dev, sizeof(int) * 8,
+			&cl_data->sensor_phy_addr[i], GFP_KERNEL);
+		cl_data->sensor_sts[i] = 0;
+		cl_data->sensor_requested_cnt[i] = 0;
+		cl_data->cur_hid_dev = i;
+
+		cl_data->report_descr_size[i] = get_descriptor_size
+				(cl_data->sensor_idx[i], descr_size);
+
+		feature_report_size = get_descriptor_size
+				(cl_data->sensor_idx[i], feature_size);
+
+		input_report_size =  get_descriptor_size
+			(cl_data->sensor_idx[i], input_size);
+
+		cl_data->feature_report[i] = kzalloc(feature_report_size,
+						     GFP_KERNEL);
+		cl_data->input_report[i] = kzalloc(input_report_size,
+						   GFP_KERNEL);
+		info.period = PERIOD;
+		info.sensor_idx = cl_data->sensor_idx[i];
+		info.phy_address = cl_data->sensor_phy_addr[i];
+		cl_data->report_descr[i] = kzalloc
+			(cl_data->report_descr_size[i], GFP_KERNEL);
+		if (!cl_data->report_descr[i])
+			return -ENOMEM;
+		rc = get_report_descriptor(cl_data->sensor_idx[i],
+					   cl_data->report_descr[i]);
+		rc = amdtp_hid_probe(cl_data->cur_hid_dev, cl_data);
+		amd_start_sensor(cl_dev->pdev, info);
+		cl_data->sensor_sts[i] = 1;
+	}
+
+	cl_dev->cl_data = cl_data;
+	cl_data_context = cl_data;
+	platform_set_drvdata(pdev, cl_dev);
+	schedule_delayed_work(&cl_data->work_buffer, PERIOD);
+	return 0;
+}
+
+static int amd_sfh_hid_client_remove(struct platform_device *pdev)
+{
+	int i;
+	struct amdtp_cl_device *cl_dev;
+	struct amdtp_cl_data *cl_data;
+
+	cl_dev = platform_get_drvdata(pdev);
+	if (!(cl_dev))
+		return -EINVAL;
+
+	cl_data = cl_dev->cl_data;
+	if (!(cl_data))
+		return -EINVAL;
+
+	for (i = 0; i < cl_data->num_hid_devices; i++)
+		amd_stop_sensor(cl_dev->pdev, i);
+
+	cancel_delayed_work_sync(&cl_data->work);
+	cancel_delayed_work_sync(&cl_data->work_buffer);
+	amdtp_hid_remove(cl_data);
+
+	for (i = 0; i < cl_data->num_hid_devices; i++) {
+		if (cl_data->sensor_virt_addr[i])
+			dma_free_coherent(&cl_dev->pdev->dev, 8 * sizeof(int),
+					  cl_data->sensor_virt_addr[i],
+					  cl_data->sensor_phy_addr[i]);
+	}
+
+	kfree(cl_data);
+	pr_info("%s:%s Exit\n", DRIVER_NAME, __func__);
+	return 0;
+}
+
+static const struct acpi_device_id amd_sfh_acpi_match[] = { {
+					"AMDI0080" },
+					{ },
+};
+
+MODULE_DEVICE_TABLE(acpi, amd_sfh_acpi_match);
+static struct platform_driver amd_sfh_plat_driver = {
+	.probe = amd_sfh_hid_client_probe,
+	.remove = amd_sfh_hid_client_remove,
+	.driver = {
+			.name = "amd_sfh_platform",
+			.acpi_match_table = ACPI_PTR(amd_sfh_acpi_match),
+	},
+};
+module_platform_driver(amd_sfh_plat_driver);
+MODULE_DESCRIPTION("AMD(R) SFH Client Driver");
+MODULE_AUTHOR("Nehal Shah <nehal-bakulchandra.shah@amd.com>");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/hid/amd-sfh-hid/amdsfh-hid.c b/drivers/hid/amd-sfh-hid/amdsfh-hid.c
new file mode 100644
index 0000000..89fe35a8
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/amdsfh-hid.c
@@ -0,0 +1,179 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * AMD MP2 Sensors transport  driver
+ *
+ * Authors: Sandeep Singh <sandeep.singh@amd.com>
+ *          Nehal Bakulchandra Shah <Nehal-bakulchandra.shah@amd.com>
+ */
+#include <linux/hid.h>
+#include <linux/wait.h>
+#include <linux/sched.h>
+#include "amdsfh-hid.h"
+
+#define DRIVER_NAME "AMD_MP2_SENSORS_TRANSPORT"
+
+/**
+ * amdtp_hid_parse() - hid-core .parse() callback
+ * @hid:	hid device instance
+ *
+ * This function gets called during call to hid_add_device
+ *
+ * Return: 0 on success and non zero on error
+ */
+static int amdtp_hid_parse(struct hid_device *hid)
+{
+	struct amdtp_hid_data *hid_data = hid->driver_data;
+	struct amdtp_cl_data *cli_data = hid_data->cli_data;
+	int rc;
+
+	rc = hid_parse_report(hid, cli_data->report_descr[hid_data->index],
+			      cli_data->report_descr_size[hid_data->index]);
+	if (rc)
+		return rc;
+	return 0;
+}
+
+/* Empty callbacks with success return code */
+static int amdtp_hid_start(struct hid_device *hid)
+{
+	return 0;
+}
+
+static void amdtp_hid_stop(struct hid_device *hid)
+{
+}
+
+static int amdtp_hid_open(struct hid_device *hid)
+{
+	return 0;
+}
+
+static void amdtp_hid_close(struct hid_device *hid)
+{
+}
+
+static int amdtp_raw_request(struct hid_device *hdev, unsigned char reportnum,
+			     u8 *buf, size_t len, unsigned char rtype,
+			     int reqtype)
+{
+	return 0;
+}
+
+static void amdtp_hid_request(struct hid_device *hid, struct hid_report *rep,
+			      int reqtype)
+{
+	switch (reqtype) {
+	case HID_REQ_GET_REPORT:
+		amd_sfh_get_report(hid, rep->id, rep->type);
+		break;
+	case HID_REQ_SET_REPORT:
+		amd_sfh_set_report(hid, rep->id, reqtype);
+		break;
+	}
+}
+
+static int amdtp_wait_for_response(struct hid_device *hid)
+{
+	struct amdtp_hid_data *hid_data =  hid->driver_data;
+	struct amdtp_cl_data *cli_data = hid_data->cli_data;
+	int i = 0;
+
+	for (i = 0; i < cli_data->num_hid_devices; i++) {
+		if (cli_data->hid_sensor_hubs[i] == hid)
+			break;
+	}
+	if (!cli_data->request_done[i])
+		wait_event_interruptible_timeout(hid_data->hid_wait,
+						 cli_data->request_done[i],
+						 1500);
+	if (!cli_data->request_done[i]) {
+		hid_err(hid,
+			"timeout waiting for response from  device\n");
+		return -ETIMEDOUT;
+	}
+	cli_data->request_done[i] = false;
+
+	return 0;
+}
+
+void amdtp_hid_wakeup(struct hid_device *hid)
+{
+	struct amdtp_hid_data *hid_data = hid->driver_data;
+	struct amdtp_cl_data *cli_data = hid_data->cli_data;
+
+	cli_data->request_done[cli_data->cur_hid_dev] = true;
+	wake_up_interruptible(&hid_data->hid_wait);
+}
+
+static struct hid_ll_driver amdtp_hid_ll_driver = {
+	.parse	=	amdtp_hid_parse,
+	.start	=	amdtp_hid_start,
+	.stop	=	amdtp_hid_stop,
+	.open	=	amdtp_hid_open,
+	.close	=	amdtp_hid_close,
+	.request  =	amdtp_hid_request,
+	.wait	=	amdtp_wait_for_response,
+	.raw_request  =	amdtp_raw_request,
+};
+
+int amdtp_hid_probe(unsigned int cur_hid_dev,
+		    struct amdtp_cl_data *cli_data)
+{
+	int rc;
+	struct hid_device *hid;
+	struct amdtp_hid_data *hid_data;
+
+	hid = hid_allocate_device();
+	if (IS_ERR(hid)) {
+		rc = PTR_ERR(hid);
+		return -ENOMEM;
+	}
+
+	hid_data = kzalloc(sizeof(*hid_data), GFP_KERNEL);
+	if (!hid_data) {
+		rc = -ENOMEM;
+		goto err_hid_data;
+	}
+
+	hid->ll_driver = &amdtp_hid_ll_driver;
+	hid_data->index = cur_hid_dev;
+	hid_data->cli_data = cli_data;
+	init_waitqueue_head(&hid_data->hid_wait);
+
+	hid->driver_data = hid_data;
+	cli_data->hid_sensor_hubs[cur_hid_dev] = hid;
+	hid->bus = BUS_AMD_AMDTP;
+	hid->version = AMD_SFH_HID_VERSION;
+	hid->vendor = AMD_SFH_HID_VENDOR;
+	hid->product = AMD_SFH_HID_PRODUCT;
+	snprintf(hid->name, sizeof(hid->name), "%s %04X:%04X", "hid-amdtp",
+		 hid->vendor, hid->product);
+
+	rc = hid_add_device(hid);
+	if (rc)
+		goto err_hid_device;
+
+	return 0;
+
+err_hid_device:
+	kfree(hid_data);
+err_hid_data:
+	hid_destroy_device(hid);
+	return rc;
+}
+
+void amdtp_hid_remove(struct amdtp_cl_data *cli_data)
+{
+	int i;
+
+	for (i = 0; i < cli_data->num_hid_devices; ++i) {
+		kfree(cli_data->feature_report[i]);
+		kfree(cli_data->input_report[i]);
+		kfree(cli_data->report_descr[i]);
+		if (cli_data->hid_sensor_hubs[i]) {
+			kfree(cli_data->hid_sensor_hubs[i]->driver_data);
+			hid_destroy_device(cli_data->hid_sensor_hubs[i]);
+			cli_data->hid_sensor_hubs[i] = NULL;
+		}
+	}
+}
diff --git a/drivers/hid/amd-sfh-hid/amdsfh-hid.h b/drivers/hid/amd-sfh-hid/amdsfh-hid.h
new file mode 100644
index 0000000..129459c
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/amdsfh-hid.h
@@ -0,0 +1,84 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * AMD MP2 Sensors transport  driver
+ *
+ * Authors: Sandeep Singh <sandeep.singh@amd.com>
+ *          Nehal Bakulchandra Shah <Nehal-bakulchandra.shah@amd.com>
+ */
+
+#ifndef AMDSFH_HID_H
+#define AMDSFH_HID_H
+#include <linux/debugfs.h>
+
+#define MAX_HID_DEVICES		4
+#define DCD_DATA_SIZE_CHAR	512
+#define BUS_AMD_AMDTP		0x20
+#define AMD_SFH_HID_VENDOR	1022
+#define AMD_SFH_HID_PRODUCT	0x0001
+#define AMD_SFH_HID_VERSION	0x0001
+
+struct amdtp_cl_device {
+	struct pci_dev *pdev;
+	struct amdtp_cl_data *cl_data;
+};
+
+struct amdtp_cl_data {
+	u8 init_done;
+	unsigned int cur_hid_dev;
+	unsigned int hid_dev_count;
+	unsigned int num_hid_devices;
+	struct device_info *hid_devices;
+	unsigned char *report_descr[MAX_HID_DEVICES];
+	int report_descr_size[MAX_HID_DEVICES];
+	struct hid_device *hid_sensor_hubs[MAX_HID_DEVICES];
+	unsigned char *hid_descr[MAX_HID_DEVICES];
+	int hid_descr_size[MAX_HID_DEVICES];
+	phys_addr_t phy_addr_base;
+	u32 *sensor_virt_addr[MAX_HID_DEVICES];
+	phys_addr_t sensor_phy_addr[MAX_HID_DEVICES];
+	u32 sensor_sts[MAX_HID_DEVICES];
+	u32 sensor_requested_cnt[MAX_HID_DEVICES];
+	u8 report_type[MAX_HID_DEVICES];
+	u8 report_id[MAX_HID_DEVICES];
+	u8 sensor_idx[MAX_HID_DEVICES];
+	u8 *feature_report[MAX_HID_DEVICES];
+	u8 *input_report[MAX_HID_DEVICES];
+	u8 request_done[MAX_HID_DEVICES];
+	struct delayed_work work;
+	struct delayed_work work_buffer;
+
+};
+
+/**
+ * struct amdtp_hid_data - Per instance HID data
+ * @index:		Device index in the order of enumeration
+ * @request_done:	Get Feature/Input report complete flag
+ *			used during get/set request from hid core
+ * @cli_data:		Link to the client instance
+ * @hid_wait:		Completion waitq
+ *
+ * Used to tie hid hid->driver data to driver client instance
+ */
+struct amdtp_hid_data {
+	int index;
+	struct amdtp_cl_data *cli_data;
+	wait_queue_head_t hid_wait;
+};
+
+/* Interface functions between HID LL driver and AMD SFH client */
+void hid_amdtp_set_feature(struct hid_device *hid, char *buf, unsigned int len,
+			   int report_id);
+void hid_amdtp_get_report(struct hid_device *hid, int report_id,
+			  int report_type);
+int amdtp_hid_probe(unsigned int cur_hid_dev,
+		    struct amdtp_cl_data *cli_data);
+void amdtp_hid_remove(struct amdtp_cl_data *cli_data);
+void amd_sfh_get_report(struct hid_device *hid, int report_id,
+			int report_type);
+void amd_sfh_set_report(struct hid_device *hid, int report_id,
+			int report_type);
+void amdtp_hid_wakeup(struct hid_device *hid);
+
+#define amd_sfh_cldata(__work) container_of(__work,\
+					struct amdtp_cl_data, work.work)
+#endif	/* AMDSFH_HID */
-- 
2.7.4


^ permalink raw reply	[flat|nested] 11+ messages in thread

* [PATCH v5 4/4] SFH: Create HID report to Enable support of AMD sensor fusion Hub (SFH)
  2020-05-29 13:42 [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Sandeep Singh
                   ` (2 preceding siblings ...)
  2020-05-29 13:42 ` [PATCH v5 3/4] SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH Sandeep Singh
@ 2020-05-29 13:42 ` Sandeep Singh
  2020-05-29 14:21 ` [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Andy Shevchenko
  4 siblings, 0 replies; 11+ messages in thread
From: Sandeep Singh @ 2020-05-29 13:42 UTC (permalink / raw)
  To: jikos, benjamin.tissoires, linux-kernel, linux-input,
	srinivas.pandruvada, jic23, linux-iio, hdegoede,
	Nehal-bakulchandra.Shah, andy.shevchenko, mail
  Cc: Shyam-sundar.S-k, Sandeep Singh

From: Sandeep Singh <sandeep.singh@amd.com>

This part of module will define the data into HID reports.
Get data from PCIe driver and populate that data into
reports. HID core communication between devices and
HID core is mostly done via HID reports.

Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
---
 .../hid_descriptor/amd_sfh_hid_descriptor.c        | 251 ++++++++
 .../hid_descriptor/amd_sfh_hid_descriptor.h        | 125 ++++
 .../hid_descriptor/amd_sfh_hid_report_descriptor.h | 642 +++++++++++++++++++++
 3 files changed, 1018 insertions(+)
 create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.c
 create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.h
 create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_descriptor.h

diff --git a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.c b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.c
new file mode 100644
index 0000000..98246c4
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.c
@@ -0,0 +1,251 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ *  AMD SFH Report Descriptor generator logic
+ *  Author: Nehal Bakulchandra Shah <Nehal-Bakulchandra.Shah@amd.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include "amd_sfh_hid_descriptor.h"
+#include "amd_sfh_hid_report_descriptor.h"
+#include "amd_mp2_pcie.h"
+
+#define	AMD_SFH_FIRMWARE_MULTIPLIER (1000)
+#define HID_USAGE_SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM	0x41
+#define HID_USAGE_SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM	0x51
+#define HID_DEFAULT_REPORT_INTERVAL				0x50
+#define HID_DEFAULT_MIN_VALUE					0X7F
+#define HID_DEFAULT_MAX_VALUE					0x80
+#define HID_DEFAULT_SENSITIVITY					0x7F
+#define HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_ENUM  0x01
+/* state enums */
+#define HID_USAGE_SENSOR_STATE_READY_ENUM                             0x02
+#define HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM                      0x05
+#define HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM                      0x04
+
+int get_report_descriptor(int sensor_idx, u8 *rep_desc)
+{
+	switch (sensor_idx) {
+	case ACCEL_IDX: /* accel */
+		memset(rep_desc, 0, sizeof(accel3_report_descriptor));
+		memcpy(rep_desc, accel3_report_descriptor,
+		       sizeof(accel3_report_descriptor));
+		break;
+
+	case GYRO_IDX: /* gyro */
+		memset(rep_desc, 0, sizeof(gyro3_report_descriptor));
+		memcpy(rep_desc, gyro3_report_descriptor,
+		       sizeof(gyro3_report_descriptor));
+		break;
+
+	case MAG_IDX: /* Magnetometer */
+		memset(rep_desc, 0, sizeof(comp3_report_descriptor));
+		memcpy(rep_desc, comp3_report_descriptor,
+		       sizeof(comp3_report_descriptor));
+		break;
+
+	case AMBIENT_LIGHT_IDX: /* ambient light sensor */
+		memset(rep_desc, 0, sizeof(als_report_descriptor));
+		memcpy(rep_desc, als_report_descriptor,
+		       sizeof(als_report_descriptor));
+		break;
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(get_report_descriptor);
+
+u32 get_descriptor_size(int sensor_idx, int descriptor_name)
+{
+	switch (sensor_idx) {
+	case ACCEL_IDX:
+		switch (descriptor_name) {
+		case descr_size:
+			return sizeof(accel3_report_descriptor);
+		case input_size:
+			return sizeof(struct accel3_input_report);
+		case feature_size:
+			return sizeof(struct accel3_feature_report);
+		}
+		break;
+
+	case GYRO_IDX:
+		switch (descriptor_name) {
+		case descr_size:
+			return sizeof(gyro3_report_descriptor);
+		case input_size:
+			return sizeof(struct gyro_input_report);
+		case feature_size:
+			return sizeof(struct gyro_feature_report);
+		}
+		break;
+
+	case MAG_IDX:
+		switch (descriptor_name) {
+		case descr_size:
+			return sizeof(comp3_report_descriptor);
+		case input_size:
+			return sizeof(struct magno_input_report);
+		case feature_size:
+			return sizeof(struct magno_input_report);
+		}
+		break;
+
+	case AMBIENT_LIGHT_IDX:
+		switch (descriptor_name) {
+		case descr_size:
+			return sizeof(als_report_descriptor);
+		case input_size:
+			return sizeof(struct als_input_report);
+		case feature_size:
+			return sizeof(struct als_feature_report);
+		}
+		break;
+
+	default:
+		pr_info("Unknown Sensor index detected");
+	}
+	return 0;
+}
+EXPORT_SYMBOL_GPL(get_descriptor_size);
+
+static void get_common_features(struct common_feature_property *common,
+				int report_id)
+{
+	common->report_id = report_id;
+	common->connection_type =
+		HID_USAGE_SENSOR_PROPERTY_CONNECTION_TYPE_PC_INTEGRATED_ENUM;
+	common->report_state =
+		HID_USAGE_SENSOR_PROP_REPORTING_STATE_ALL_EVENTS_ENUM;
+	common->power_state =
+		HID_USAGE_SENSOR_PROP_POWER_STATE_D0_FULL_POWER_ENUM;
+	common->sensor_state = HID_USAGE_SENSOR_STATE_INITIALIZING_ENUM;
+	common->report_interval =  HID_DEFAULT_REPORT_INTERVAL;
+}
+
+u8 get_feature_report(int sensor_idx, int report_id, u8 *feature_report)
+{
+	u8 report_size = 0;
+	struct accel3_feature_report acc_feature;
+	struct gyro_feature_report gyro_feature;
+	struct magno_feature_report magno_feature;
+	struct als_feature_report als_feature;
+
+	if (!feature_report)
+		return report_size;
+
+	switch (sensor_idx) {
+	case ACCEL_IDX: /* accel */
+		get_common_features(&acc_feature.common_property, report_id);
+		acc_feature.accel_change_sesnitivity =
+						HID_DEFAULT_SENSITIVITY;
+		acc_feature.accel_sensitivity_min = HID_DEFAULT_MIN_VALUE;
+		acc_feature.accel_sensitivity_max = HID_DEFAULT_MAX_VALUE;
+		memcpy(feature_report, &acc_feature, sizeof(acc_feature));
+		report_size = sizeof(acc_feature);
+		break;
+
+	case GYRO_IDX: /* gyro */
+		get_common_features(&gyro_feature.common_property, report_id);
+		gyro_feature.gyro_change_sesnitivity = HID_DEFAULT_SENSITIVITY;
+		gyro_feature.gyro_sensitivity_min = HID_DEFAULT_MIN_VALUE;
+		gyro_feature.gyro_sensitivity_max = HID_DEFAULT_MAX_VALUE;
+		memcpy(feature_report, &gyro_feature, sizeof(gyro_feature));
+		report_size = sizeof(gyro_feature);
+		break;
+
+	case MAG_IDX: /* Magnetometer */
+		get_common_features(&magno_feature.common_property, report_id);
+		magno_feature.magno_headingchange_sensitivity =
+						HID_DEFAULT_SENSITIVITY;
+		magno_feature.heading_min = HID_DEFAULT_MIN_VALUE;
+		magno_feature.heading_max = HID_DEFAULT_MAX_VALUE;
+		magno_feature.flux_change_sensitivity = HID_DEFAULT_MIN_VALUE;
+		magno_feature.flux_min = HID_DEFAULT_MIN_VALUE;
+		magno_feature.flux_max = HID_DEFAULT_MAX_VALUE;
+		memcpy(feature_report, &magno_feature, sizeof(magno_feature));
+		report_size = sizeof(magno_feature);
+		break;
+
+	case AMBIENT_LIGHT_IDX:  /* ambient light sensor */
+		get_common_features(&als_feature.common_property, report_id);
+		als_feature.als_change_sesnitivity = HID_DEFAULT_SENSITIVITY;
+		als_feature.als_sensitivity_min = HID_DEFAULT_MIN_VALUE;
+		als_feature.als_sensitivity_max = HID_DEFAULT_MAX_VALUE;
+		memcpy(feature_report, &als_feature, sizeof(als_feature));
+		report_size = sizeof(als_feature);
+		break;
+	}
+	return report_size;
+}
+EXPORT_SYMBOL_GPL(get_feature_report);
+
+static void get_common_inputs(struct common_input_property *common,
+			      int report_id)
+{
+	common->report_id = report_id;
+	common->sensor_state = HID_USAGE_SENSOR_STATE_READY_ENUM;
+	common->event_type = HID_USAGE_SENSOR_EVENT_DATA_UPDATED_ENUM;
+}
+
+u8 get_input_report(int sensor_idx, int report_id,
+		    u8 *input_report, u32 *sensor_virt_addr)
+{
+	u8 report_size = 0;
+	struct accel3_input_report acc_input;
+	struct gyro_input_report gyro_input;
+	struct magno_input_report magno_input;
+	struct als_input_report als_input;
+
+	if (!sensor_virt_addr || !input_report)
+		return report_size;
+
+	switch (sensor_idx) {
+	case ACCEL_IDX: /* accel */
+		get_common_inputs(&acc_input.common_property, report_id);
+		acc_input.in_accel_x_value = (int)sensor_virt_addr[0] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		acc_input.in_accel_y_value = (int)sensor_virt_addr[1] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		acc_input.in_accel_z_value =  (int)sensor_virt_addr[2] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		memcpy(input_report, &acc_input, sizeof(acc_input));
+		report_size = sizeof(acc_input);
+		break;
+
+	case GYRO_IDX: /* gyro */
+		get_common_inputs(&gyro_input.common_property, report_id);
+		gyro_input.in_angel_x_value = (int)sensor_virt_addr[0] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		gyro_input.in_angel_y_value = (int)sensor_virt_addr[1] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		gyro_input.in_angel_z_value =  (int)sensor_virt_addr[2] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		memcpy(input_report, &gyro_input, sizeof(gyro_input));
+		report_size = sizeof(gyro_input);
+		break;
+
+	case MAG_IDX: /* Magnetometer */
+		get_common_inputs(&magno_input.common_property, report_id);
+		magno_input.in_magno_x = (int)sensor_virt_addr[0] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		magno_input.in_magno_y = (int)sensor_virt_addr[1] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		magno_input.in_magno_z = (int)sensor_virt_addr[2] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		magno_input.in_magno_accuracy = (u16)sensor_virt_addr[3] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		memcpy(input_report, &magno_input, sizeof(magno_input));
+		report_size = sizeof(magno_input);
+		break;
+
+	case AMBIENT_LIGHT_IDX: /* Als */
+		get_common_inputs(&als_input.common_property, report_id);
+		als_input.illuminance_value =  (int)sensor_virt_addr[0] /
+						AMD_SFH_FIRMWARE_MULTIPLIER;
+		report_size = sizeof(als_input);
+		memcpy(input_report, &als_input, sizeof(als_input));
+		break;
+	}
+	return report_size;
+}
diff --git a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.h b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.h
new file mode 100644
index 0000000..78a6dfe
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.h
@@ -0,0 +1,125 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * HID report and descriptor stuructures and routines
+ *
+ * Author: Nehal Bakulchandra Shah <Nehal-bakulchandra.shah@amd.com>
+ */
+
+#ifndef AMD_SFH_HID_DESCRIPTOR_H
+#define AMD_SFH_HID_DESCRIPTOR_H
+
+enum desc_type {
+	/* Report descriptor name */
+	descr_size = 1,
+	input_size,
+	feature_size,
+};
+
+struct _hid_report_descriptor {
+	u8 bDescriptorType;
+	u8 wDescriptorLength;
+};
+
+struct common_feature_property {
+	/* common properties */
+	u8	 report_id;
+	u8	 connection_type;
+	u8	 report_state;
+	u8	 power_state;
+	u8	 sensor_state;
+	u32  report_interval;
+} __packed;
+
+struct common_input_property {
+	/* common properties */
+	u8	 report_id;
+	u8	 sensor_state;
+	u8	 event_type;
+} __packed;
+
+struct _hid_device_descriptor {
+	u8 bLength;
+	u8 bDescriptorType;
+	u8 bcdHID[2];
+	u8 bCountryCode;
+	u8 bNumDescriptors;
+	struct _hid_report_descriptor *reports;
+};
+
+struct accel3_feature_report {
+	struct common_feature_property common_property;
+	/* properties specific to this sensor */
+	u16  accel_change_sesnitivity;
+	s16  accel_sensitivity_max;
+	s16  accel_sensitivity_min;
+} __packed;
+
+struct accel3_input_report {
+	struct	common_input_property common_property;
+	/* values specific to this sensor */
+	int   in_accel_x_value;
+	int   in_accel_y_value;
+	int   in_accel_z_value;
+	/* include if required to support the "shake" event */
+	u8   in_accel_shake_detection;
+} __packed;
+
+struct gyro_feature_report {
+	struct common_feature_property common_property;
+	/* properties specific to this sensor */
+	u16  gyro_change_sesnitivity;
+	s16  gyro_sensitivity_max;
+	s16  gyro_sensitivity_min;
+} __packed;
+
+struct gyro_input_report {
+	struct	common_input_property common_property;
+	/* values specific to this sensor */
+	int   in_angel_x_value;
+	int   in_angel_y_value;
+	int   in_angel_z_value;
+} __packed;
+
+struct magno_feature_report {
+	struct common_feature_property common_property;
+	/*properties specific to this sensor */
+	u16	magno_headingchange_sensitivity;
+	s16	heading_min;
+	s16	heading_max;
+	u16	flux_change_sensitivity;
+	s16	flux_min;
+	s16	flux_max;
+} __packed;
+
+struct magno_input_report {
+	struct	common_input_property common_property;
+	int	in_magno_x;
+	int	in_magno_y;
+	int	in_magno_z;
+	int	in_magno_accuracy;
+} __packed;
+
+struct als_feature_report {
+	struct common_feature_property common_property;
+	/* properties specific to this sensor */
+	u16  als_change_sesnitivity;
+	s16  als_sensitivity_max;
+	s16  als_sensitivity_min;
+} __packed;
+
+struct als_input_report {
+	struct  common_input_property common_property;
+	/* values specific to this sensor */
+	int illuminance_value;
+} __packed;
+
+int get_report_descriptor(int sensor_idx, u8 rep_desc[]);
+u32 get_descriptor_size(int sensor_idx, int descriptor_name);
+//u32 get_report_descriptor_size(int sensor_idx);
+//u32 get_feature_report_size(int sensor_idx);
+//u32 get_input_report_size(int sensor_idx);
+u8 get_feature_report(int sensor_idx, int report_id, u8 *feature_report);
+u8 get_input_report(int sensor_idx, int report_id, u8 *input_report,
+		    u32 *sensor_virt_addr);
+
+#endif
diff --git a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_descriptor.h b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_descriptor.h
new file mode 100644
index 0000000..b686ed7
--- /dev/null
+++ b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_descriptor.h
@@ -0,0 +1,642 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/*
+ * HID  descriptor stuructures
+ *
+ * Author: Nehal Bakulchandra Shah <Nehal-bakulchandra.shah@amd.com>
+ */
+
+#ifndef AMD_SFH_HID_REPORT_DESCRIPTOR_H
+#define AMD_SFH_HID_REPORT_DESCRIPTOR_H
+
+// Accelerometer 3D Sensor
+static const u8 accel3_report_descriptor[] = {
+0x05, 0x20,          /* Usage page */
+0x09, 0x73,          /* Motion type Accel 3D */
+0xA1, 0x00,          /* HID Collection (Physical) */
+
+//feature reports(xmit/receive)
+0x85, 1,           /* HID  Report ID */
+0x05, 0x20,	   /* HID usage page sensor */
+0x0A, 0x09, 0x03,  /* Sensor property and sensor connection type */
+0x15, 0,           /* HID logical MIN_8(0) */
+0x25, 2,	   /* HID logical MAX_8(2) */
+0x75, 8,	   /* HID report size(8) */
+0x95, 1,	   /* HID report count(1) */
+0xA1, 0x02,	   /* HID collection (logical) */
+0x0A, 0x30, 0x08, /* Sensor property connection type intergated sel*/
+0x0A, 0x31, 0x08, /* Sensor property connection type attached sel */
+0x0A, 0x32, 0x08, /* Sensor property connection type external sel */
+0xB1, 0x00,       /* HID feature (Data_Arr_Abs) */
+0xC0,		  /* HID end collection */
+0x0A, 0x16, 0x03, /* HID usage sensor property reporting state */
+0x15, 0,          /* HID logical Min_8(0) */
+0x25, 5,	  /* HID logical Max_8(5) */
+0x75, 8,	  /* HID report size(8) */
+0x95, 1,          /* HID report count(1) */
+0xA1, 0x02,	  /* HID collection(logical) */
+0x0A, 0x40, 0x08, /* Sensor property report state no events sel */
+0x0A, 0x41, 0x08, /* Sensor property report state all events sel */
+0x0A, 0x42, 0x08, /* Sensor property report state threshold events sel */
+0x0A, 0x43, 0x08, /* Sensor property report state no events wake sel */
+0x0A, 0x44, 0x08, /* Sensor property report state all events wake sel */
+0x0A, 0x45, 0x08, /* Sensor property report state threshold events wake sel */
+0xB1, 0x00,	  /* HID feature (Data_Arr_Abs) */
+0xC0,		  /* HID end collection */
+0x0A, 0x19, 0x03, /* HID usage sensor property power state */
+0x15, 0,	  /* HID logical Min_8(0) */
+0x25, 5,	  /* HID logical Max_8(5) */
+0x75, 8,	  /* HID report size(8) */
+0x95, 1,	  /* HID report count(1) */
+0xA1, 0x02,	  /* HID collection(logical) */
+0x0A, 0x50, 0x08, /* Sensor property power state undefined sel */
+0x0A, 0x51, 0x08, /* Sensor property power state D0 full power  sel */
+0x0A, 0x52, 0x08, /* Sensor property power state D1 low power sel */
+0x0A, 0x53, 0x08, /* Sensor property power state D2 standby with wake sel */
+0x0A, 0x54, 0x08, /* Sensor property power state D3 sleep with wake  sel */
+0x0A, 0x55, 0x08, /* Sensor property power state D4 power off sel */
+0xB1, 0x00,       /* HID feature (Data_Arr_Abs) */
+0xC0,		  /* HID end collection */
+0x0A, 0x01, 0x02, /* HID usage sensor state */
+0x15, 0,	  /* HID logical Min_8(0) */
+0x25, 6,	  /* HID logical Max_8(6) */
+0x75, 8,	  /* HID report size(8) */
+0x95, 1,	  /* HID report count(1) */
+0xA1, 0x02,	  /* HID collection(logical) */
+0x0A, 0x00, 0x08, /* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08, /* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08, /* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08, /* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08, /* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08, /* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08, /* HID usage sensor state error sel */
+0xB1, 0x00,	  /* HID feature (Data_Arr_Abs) */
+0xC0,		  /* HID end collection */
+0x0A, 0x0E, 0x03, /* HID usage sensor property report interval */
+0x15, 0,	  /* HID logical Min_8(0) */
+0x27, 0xFF, 0xFF, 0xFF, 0xFF, /* HID logical Max_32 */
+
+0x75, 32,	  /* HID report size(32) */
+0x95, 1,	  /* HID report count(1) */
+0x55, 0,	  /* HID unit exponent(0) */
+0xB1, 0x02,	  /* HID feature (Data_Arr_Abs) */
+0x0A, 0x52, 0x14, /* Sensor data motion accel and mod change sensitivity ABS) */
+
+0x15, 0,		/* HID logical Min_8(0) */
+0x26, 0xFF, 0xFF,	/* HID logical Max_16(0xFF,0xFF) */
+
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x52, 0x24,	/* HID usage sensor data (motion accel and mod max) */
+
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x52, 0x34,	/* HID usage sensor data (motion accel and mod min) */
+
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+
+//input report (transmit)
+0x05, 0x20,		 /* HID usage page sensors */
+0x0A, 0x01, 0x02,	 /* HID usage sensor state */
+0x15, 0,		 /* HID logical Min_8(0) */
+0x25, 6,		 /* HID logical Max_8(6) */
+0x75, 8,		 /* HID report size(8) */
+0x95, 1,		 /* HID report count (1) */
+0xA1, 0x02,		 /* HID end collection (logical) */
+0x0A, 0x00, 0x08,	 /* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08,	 /* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08,	 /* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08,	 /* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08,	 /* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08,	 /* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08,	 /* HID usage sensor state error sel */
+0X81, 0x00,		 /* HID Input (Data_Arr_Abs) */
+0xC0,			 /* HID end collection */
+0x0A, 0x02, 0x02,	 /* HID usage sensor event */
+0x15, 0,		 /* HID logical Min_8(0) */
+0x25, 5,		 /* HID logical Max_8(5) */
+0x75, 8,		 /* HID report size(8) */
+0x95, 1,		 /* HID report count (1) */
+0xA1, 0x02,		 /* HID end collection (logical) */
+0x0A, 0x10, 0x08,	 /* HID usage sensor event unknown sel */
+0x0A, 0x11, 0x08,	 /* HID usage sensor event state changed sel */
+0x0A, 0x12, 0x08,	 /* HID usage sensor event property changed sel */
+0x0A, 0x13, 0x08,	 /* HID usage sensor event data updated sel */
+0x0A, 0x14, 0x08,	 /* HID usage sensor event poll response sel */
+0x0A, 0x15, 0x08,	 /* HID usage sensor event change sensitivity sel */
+0X81, 0x00,		 /* HID Input (Data_Arr_Abs) */
+0xC0,			 /* HID end collection */
+0x0A, 0x53, 0x04,	 /* HID usage sensor data motion Acceleration X axis */
+0x17, 0x00, 0x00, 0x01, 0x80, /* HID logical Min_32 */
+
+0x27, 0xFF, 0xff, 0XFF, 0XFF, /* HID logical Max_32  */
+
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0x54, 0x04,	/* HID usage sensor data motion Acceleration Y axis */
+0x17, 0X00, 0X00, 0x01, 0x80, /* HID logical Min_32 */
+
+0x27, 0xFF, 0xFF, 0XFF, 0XFF, /* HID logical Max_32 */
+
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0x55, 0x04,	/* HID usage sensor data motion Acceleration Z axis */
+0x17, 0X00, 0X00, 0x01, 0x80, /* HID logical Min_32 */
+
+0x27, 0XFF, 0XFF, 0xFF, 0x7F, /* HID logical Max_32 */
+
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+
+0x0A, 0x51, 0x04,	/* HID usage sensor data motion state */
+0x15, 0,		/* HID logical Min_8(0) False = Still*/
+0x25, 1,		/* HID logical Min_8(1) True = In motion */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count (1) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0xC0			/* HID end collection */
+};
+
+const unsigned char gyro3_report_descriptor[] = {
+0x05, 0x20,		/* Usage page */
+0x09, 0x76,		/* Motion type Gyro3D */
+0xA1, 0x00,		/* HID Collection (Physical) */
+
+0x85, 2,		/* HID  Report ID */
+0x05, 0x20,		/* HID usage page sensor */
+0x0A, 0x09, 0x03,	/* Sensor property and sensor connection type */
+0x15, 0,		/* HID logical MIN_8(0) */
+0x25, 2,		/* HID logical MAX_8(2) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection (logical) */
+0x0A, 0x30, 0x08,	/* Sensor property connection type intergated sel */
+0x0A, 0x31, 0x08,	/* Sensor property connection type attached sel */
+0x0A, 0x32, 0x08,	/* Sensor property connection type external sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x16, 0x03,	/* HID usage sensor property reporting state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x40, 0x08,	/* Sensor reporting state no events sel */
+0x0A, 0x41, 0x08,	/* Sensor reporting state all events sel */
+0x0A, 0x42, 0x08,	/* Sensor reporting state threshold events sel */
+0x0A, 0x43, 0x08,	/* Sensor reporting state no events wake sel */
+0x0A, 0x44, 0x08,	/* Sensor reporting state all events wake sel */
+0x0A, 0x45, 0x08,	/* Sensor reporting state threshold events wake sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x19, 0x03,	/* HID usage sensor property power state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x50, 0x08,	/* Sensor  power state undefined sel */
+0x0A, 0x51, 0x08,	/* Sensor  power state D0 full power  sel */
+0x0A, 0x52, 0x08,	/* Sensor  power state D1 low power sel */
+0x0A, 0x53, 0x08,	/* Sensor  power state D2 standby with wake sel */
+0x0A, 0x54, 0x08,	/* Sensor  power state D3 sleep with wake  sel */
+0x0A, 0x55, 0x08,	/* Sensor  power state D4 power off sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x01, 0x02,	/* HID usage sensor state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 6,		/* HID logical Max_8(6) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x00, 0x08,	/* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08,	/* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08,	/* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08,	/* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08,	/* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08,	/* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08,	/* HID usage sensor state error sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x0E, 0x03,	/* HID usage sensor property report interval */
+0x15, 0,		/* HID logical Min_8(0) */
+0x27, 0xFF, 0xFF, 0xFF, 0xFF,	/* HID logical Max_32 */
+
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0,		/* HID unit exponent(0) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x56, 0x14,	/* Angular velocity and mod change sensitivity ABS)*/
+
+0x15, 0,		/* HID logical Min_8(0) */
+0x26, 0xFF, 0xFF,	/* HID logical Max_16(0xFF,0xFF) */
+
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x56, 0x24,	/* Sensor data (motion angular velocity and mod max) */
+
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x56, 0x34,	/* HID usage sensor data (motion accel and mod min) */
+
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+
+//Input reports(transmit)
+0x05, 0x20,		/* HID usage page sensors */
+0x0A, 0x01, 0x02,	/* HID usage sensor state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 6,		/* HID logical Max_8(6) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count (1) */
+0xA1, 0x02,		/* HID end collection (logical) */
+0x0A, 0x00, 0x08,	/* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08,	/* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08,	/* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08,	/* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08,	/* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08,	/* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08,	/* HID usage sensor state error sel */
+0X81, 0x00,		/* HID Input (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x02, 0x02,	/* HID usage sensor event */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count (1) */
+0xA1, 0x02,		/* HID end collection (logical) */
+0x0A, 0x10, 0x08,	/* HID usage sensor event unknown sel */
+0x0A, 0x11, 0x08,	/* HID usage sensor event state changed sel */
+0x0A, 0x12, 0x08,	/* HID usage sensor event property changed sel */
+0x0A, 0x13, 0x08,	/* HID usage sensor event data updated sel */
+0x0A, 0x14, 0x08,	/* HID usage sensor event poll response sel */
+0x0A, 0x15, 0x08,	/* HID usage sensor event change sensitivity sel */
+0X81, 0x00,		/* HID Input (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x57, 0x04,	/* Sensor data motion Angular velocity  X axis */
+0x17, 0x00, 0x00, 0x01, 0x80,	/* HID logical Min_32 */
+
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	/* HID logical Max_32 */
+
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0x58, 0x04,	/* Sensor data motion Angular velocity  Y axis */
+0x17, 0x00, 0x00, 0x01, 0x80, /* HID logical Min_32 */
+
+0x27, 0xFF, 0xFF, 0xFF, 0x7F, /* HID logical Max_32 */
+
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0x59, 0x04,	/* Sensor data motion Angular velocity  Z axis */
+0x17, 0x00, 0x00, 0x01, 0x80, /* HID logical Min_32 */
+
+0x27, 0xFF, 0xFF, 0xFF, 0x7F, /* HID logical Max_32 */
+
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+
+0xC0,			/* HID end collection */
+};
+
+const unsigned char comp3_report_descriptor[] = {
+0x05, 0x20,		/* Usage page */
+0x09, 0x83,		/* Motion type Orientation compass 3D */
+0xA1, 0x00,		/* HID Collection (Physical) */
+
+0x05, 0x20,		/* HID usage page sensor */
+0x0A, 0x09, 0x03,	/* Sensor property and sensor connection type */
+0x15, 0,		/* HID logical MIN_8(0) */
+0x25, 2,		/* HID logical MAX_8(2) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection (logical) */
+0x0A, 0x30, 0x08,	/* Sensor property connection type intergated sel */
+0x0A, 0x31, 0x08,	/* Sensor property connection type attached sel */
+0x0A, 0x32, 0x08,	/* Sensor property connection type external sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x16, 0x03,	/* HID usage sensor property reporting state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x40, 0x08,	/* Sensor reporting state no events sel */
+0x0A, 0x41, 0x08,	/* Sensor reporting state all events sel */
+0x0A, 0x42, 0x08,	/* Sensor reporting state threshold events sel */
+0x0A, 0x43, 0x08,	/* Sensor reporting state no events wake sel */
+0x0A, 0x44, 0x08,	/* Sensor reporting state all events wake sel */
+0x0A, 0x45, 0x08,	/* Sensor reporting state threshold events wake sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x19, 0x03,       /* HID usage sensor property power state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x50, 0x08,	/* Sensor power state undefined sel */
+0x0A, 0x51, 0x08,	/* Sensor power state D0 full power  sel */
+0x0A, 0x52, 0x08,	/* Sensor power state D1 low power sel */
+0x0A, 0x53, 0x08,	/* Sensor power state D2 standby with wake sel */
+0x0A, 0x54, 0x08,	/* Sensor power state D3 sleep with wake  sel */
+0x0A, 0x55, 0x08,	/* Sensor power state D4 power off sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x01, 0x02,	/* HID usage sensor state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 6,		/* HID logical Max_8(6) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x00, 0x08,       /* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08,       /* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08,       /* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08,       /* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08,       /* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08,       /* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08,       /* HID usage sensor state error sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x0E, 0x03,	/* HID usage sensor property report interval */
+0x15, 0,		/* HID logical Min_8(0) */
+0x27, 0xFF, 0xFF, 0xFF, 0xFF,	/* HID logical Max_32 */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0,		/* HID unit exponent(0) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x71, 0x14,	/* Orientation  and mod change sensitivity ABS)*/
+0x15, 0,		/* HID logical Min_8(0) */
+0x26, 0xFF, 0xFF,	/* HID logical Max_16(0xFF,0xFF) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x71, 0x24,	/* Sensor data (motion orientation  and mod max) */
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0F,		/* HID unit exponent(0x0F) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x71, 0x34,	/* Sensor data (motion orientation  and mod min) */
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0F,		/* HID unit exponent(0x0F) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x84, 0x14,	/* Maganetic flux and change sensitivity ABS) */
+0x15, 0,		/* HID logical Min_8(0) */
+0x26, 0xFF, 0xFF,	/* HID logical Max_16(0xFF,0xFF) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x84, 0x24,	/* Maganetic flux and mod change sensitivity Max) */
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0F,		/* HID unit exponent(0x0F) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0x84, 0x34,	/* Maganetic flux and mod change sensitivity Min */
+0x16, 0x01, 0x80,	/* HID logical Min_16(0x01,0x80) */
+0x26, 0xFF, 0x7F,	/* HID logical Max_16(0xFF,0x7F) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0F,		/* HID unit exponent(0x0F) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+
+//Input reports(transmit)
+0x05, 0x20,		/* HID usage page sensors */
+0x0A, 0x01, 0x02,	/* HID usage sensor state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 6,		/* HID logical Max_8(6) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count (1) */
+0xA1, 0x02,		/* HID end collection (logical) */
+0x0A, 0x00, 0x08,	/* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08,	/* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08,	/* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08,	/* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08,	/* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08,	/* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08,	/* HID usage sensor state error sel */
+0X81, 0x00,		/* HID Input (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x02, 0x02,	/* HID usage sensor event */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count (1) */
+0xA1, 0x02,		/* HID end collection (logical) */
+0x0A, 0x10, 0x08,	/* HID usage sensor event unknown sel */
+0x0A, 0x11, 0x08,	/* HID usage sensor event state changed sel */
+0x0A, 0x12, 0x08,	/* HID usage sensor event property changed sel */
+0x0A, 0x13, 0x08,	/* HID usage sensor event data updated sel */
+0x0A, 0x14, 0x08,	/* HID usage sensor event poll response sel */
+0x0A, 0x15, 0x08,	/* HID usage sensor event change sensitivity sel */
+0X81, 0x00,		/* HID Input (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x85, 0x04,	/* Sensor data orientation magnetic flux X axis */
+0x17, 0x00, 0x00, 0x01, 0x80,	/* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	/* HID logical Max_32 */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0D,		/* HID unit exponent(0x0D) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0x86, 0x04,	/* Sensor data orientation magnetic flux Y axis */
+0x17, 0x00, 0x00, 0x01, 0x80,	/* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	/* HID logical Max_32 */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0x55, 0x0D,		/* HID unit exponent(0x0D) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0x87, 0x04,	/* Sensor data orientation magnetic flux Z axis */
+0x17, 0x00, 0x00, 0x01, 0x80,	/* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	/* HID logical Max_32 */
+0x75, 32,			/* HID report size(32) */
+0x95, 1,			/* HID report count (1) */
+0x55, 0x0D,			/* HID unit exponent(0x0D) */
+0X81, 0x02,			/* HID Input (Data_Arr_Abs) */
+0x0A, 0x88, 0x04,	/* Sensor data orientation magnetometer accuracy */
+0x17, 0x00, 0x00, 0x01, 0x80,	/* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	/* HID logical Max_32 */
+0x75, 32,			/* HID report size(32) */
+0x95, 1,			/* HID report count (1) */
+0X81, 0x02,			/* HID Input (Data_Arr_Abs) */
+0xC0				/* HID end collection */
+};
+
+const unsigned char als_report_descriptor[] = {
+0x05, 0x20,	/* HID usage page sensor */
+0x09, 0x41,	/* HID usage sensor type Ambientlight  */
+0xA1, 0x00,	/* HID Collection (Physical) */
+
+//feature reports(xmit/receive)
+0x05, 0x20,	/* HID usage page sensor */
+0x0A, 0x09, 0x03,	/* Sensor property and sensor connection type */
+0x15, 0,		/* HID logical MIN_8(0) */
+0x25, 2,		/* HID logical MAX_8(2) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection (logical) */
+0x0A, 0x30, 0x08,	/* Sensor property connection type intergated sel */
+0x0A, 0x31, 0x08,	/* Sensor property connection type attached sel */
+0x0A, 0x32, 0x08,	/* Sensor property connection type external sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x16, 0x03,	/* HID usage sensor property reporting state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x40, 0x08,	/* Sensor reporting state no events sel */
+0x0A, 0x41, 0x08,	/* Sensor reporting state all events sel */
+0x0A, 0x42, 0x08,	/* Sensor reporting state threshold events sel */
+0x0A, 0x43, 0x08,	/* Sensor reporting state no events wake sel */
+0x0A, 0x44, 0x08,	/* Sensor reporting state all events wake sel */
+0x0A, 0x45, 0x08,	/* Sensor reporting state threshold events wake sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x19, 0x03,	/* HID usage sensor property power state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x50, 0x08,	/* Sensor power state undefined sel */
+0x0A, 0x51, 0x08,	/* Sensor power state D0 full power  sel */
+0x0A, 0x52, 0x08,	/* Sensor power state D1 low power sel */
+0x0A, 0x53, 0x08,	/* Sensor power state D2 standby with wake sel */
+0x0A, 0x54, 0x08,	/* Sensor power state D3 sleep with wake  sel */
+0x0A, 0x55, 0x08,	/* Sensor power state D4 power off sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x01, 0x02,	/* HID usage sensor state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 6,		/* HID logical Max_8(6) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count(1) */
+0xA1, 0x02,		/* HID collection(logical) */
+0x0A, 0x00, 0x08,	/* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08,	/* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08,	/* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08,	/* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08,	/* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08,	/* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08,	/* HID usage sensor state error sel */
+0xB1, 0x00,		/* HID feature (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x0E, 0x03,	/* HID usage sensor property report interval */
+0x15, 0,		/* HID logical Min_8(0) */
+0x27, 0xFF, 0xFF, 0xFF, 0xFF,	/* HID logical Max_32 */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0,		/* HID unit exponent(0) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0xD1, 0xE4,	/* Light illuminance and sensitivity REL PCT) */
+0x15, 0,		/* HID logical Min_8(0) */
+0x26, 0x10, 0x27,	/* HID logical Max_16(0x10,0x27) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0E,		/* HID unit exponent(0x0E) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0xD1, 0x24,	/* Sensor data (Light illuminance and mod max) */
+0x15, 0,		/* HID logical Min_8(0) */
+0x26, 0xFF, 0xFF,	/* HID logical Max_16(0xFF,0xFF) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0F,		/* HID unit exponent(0x0F) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+0x0A, 0xD1, 0x34,	/* Sensor data (Light illuminance and mod min) */
+0x15, 0,		/* HID logical Min_8(0) */
+0x26, 0xFF, 0xFF,	/* HID logical Max_16(0xFF,0xFF) */
+0x75, 16,		/* HID report size(16) */
+0x95, 1,		/* HID report count(1) */
+0x55, 0x0F,		/* HID unit exponent(0x0F) */
+0xB1, 0x02,		/* HID feature (Data_Arr_Abs) */
+
+//Input reports (transmit)
+0x05, 0x20,		/* HID usage page sensors */
+0x0A, 0x01, 0x02,	/* HID usage sensor state */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 6,		/* HID logical Max_8(6) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count (1) */
+0xA1, 0x02,		/* HID end collection (logical) */
+0x0A, 0x00, 0x08,	/* HID usage sensor state unknown sel */
+0x0A, 0x01, 0x08,	/* HID usage sensor state ready sel */
+0x0A, 0x02, 0x08,	/* HID usage sensor state not available sel */
+0x0A, 0x03, 0x08,	/* HID usage sensor state no data sel */
+0x0A, 0x04, 0x08,	/* HID usage sensor state initializing sel */
+0x0A, 0x05, 0x08,	/* HID usage sensor state access denied sel */
+0x0A, 0x06, 0x08,	/* HID usage sensor state error sel */
+0X81, 0x00,		/* HID Input (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0x02, 0x02,	/* HID usage sensor event */
+0x15, 0,		/* HID logical Min_8(0) */
+0x25, 5,		/* HID logical Max_8(5) */
+0x75, 8,		/* HID report size(8) */
+0x95, 1,		/* HID report count (1) */
+0xA1, 0x02,		/* HID end collection (logical) */
+0x0A, 0x10, 0x08,	/* HID usage sensor event unknown sel */
+0x0A, 0x11, 0x08,	/* HID usage sensor event state changed sel */
+0x0A, 0x12, 0x08,	/* HID usage sensor event property changed sel */
+0x0A, 0x13, 0x08,	/* HID usage sensor event data updated sel */
+0x0A, 0x14, 0x08,	/* HID usage sensor event poll response sel */
+0x0A, 0x15, 0x08,	/* HID usage sensor event change sensitivity sel */
+0X81, 0x00,		/* HID Input (Data_Arr_Abs) */
+0xC0,			/* HID end collection */
+0x0A, 0xD1, 0x04,	/* HID usage sensor data light illuminance */
+0x17, 0x00, 0x00, 0x01, 0x80,	 /* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	 /* HID logical Max_32 */
+0x55, 0x0F,		/* HID unit exponent(0x0F) */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0xC0			/* HID end collection */
+};
+#endif
-- 
2.7.4


^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [PATCH v5 2/4] SFH: PCI driver to add support of AMD sensor fusion Hub using HID framework
  2020-05-29 13:42 ` [PATCH v5 2/4] SFH: PCI driver to add support of AMD sensor fusion Hub using " Sandeep Singh
@ 2020-05-29 14:03   ` Andy Shevchenko
  0 siblings, 0 replies; 11+ messages in thread
From: Andy Shevchenko @ 2020-05-29 14:03 UTC (permalink / raw)
  To: Sandeep Singh
  Cc: Jiri Kosina, Benjamin Tissoires, Linux Kernel Mailing List,
	linux-input, Srinivas Pandruvada, Jonathan Cameron, linux-iio,
	Hans de Goede, Shah, Nehal-bakulchandra, Richard Neumann,
	Shyam-sundar.S-k

On Fri, May 29, 2020 at 4:42 PM Sandeep Singh <Sandeep.Singh@amd.com> wrote:
>
> From: Sandeep Singh <sandeep.singh@amd.com>
>
> AMD SFH uses HID over PCIe bus.SFH fw is part of MP2
> processor (MP2 which is an ARM® Cortex-M4 core based
> co-processor to x86) and it runs on MP2 where in driver resides
> on X86. This part of module will communicate with MP2 FW and
> provide that data into DRAM
>
> Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>

> Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>

Why you are submitting code if Nehal's SoB last in the list?

...

> Reported-by: kbuild test robot <lkp@intel.com>

I guess it's not applicable here, since it's a new code. Rather you
may mentioned this in changelog in cover letter.

...

> +       write64(0x0, privdata->mmio + AMD_C2P_MSG2);

Hmm... What's write64()? Isn't it writeq()?

...

> +       if (ACEL_EN  & activestatus) {
> +               sensor_id[num_of_sensors] = ACCEL_IDX;
> +               num_of_sensors++;
> +       }

You can drop a lot of LOCs by doing

    if (ACEL_EN  & activestatus)
        sensor_id[num_of_sensors++] = ACCEL_IDX;

...

> +       rc = pcim_iomap_regions(pdev, BIT(2), DRIVER_NAME);
> +       if (rc)

> +               goto err_pci_enable;

Due to use of PCI managed functions error path is not needed at all.
Return directly.

...

> +       rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
> +       if (rc) {
> +               rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
> +               if (rc)
> +                       goto err_dma_mask;
> +       }

rc = ...;
if (rc)
  rc = ...;
if (rc)
  return rc;

...

> +err_dma_mask:
> +       pci_clear_master(pdev);

PCI managed handling does it for you.

> +err_pci_enable:
> +       pci_set_drvdata(pdev, NULL);

Driver code does this for you.

> +       return rc;

...

> +       dev_info(&pdev->dev, "MP2 device found [%04x:%04x] (rev %x)\n",
> +                pdev->vendor, pdev->device, pdev->revision);

How is it useful? PCI core prints a lot of information which you may
find in dmesg.

...

> +       privdata = devm_kzalloc(&pdev->dev, sizeof(*privdata), GFP_KERNEL);
> +       if (!privdata)

> +               rc = -ENOMEM;

How this has been tested?

> +       privdata->pdev = pdev;

> +       rc = amd_mp2_pci_init(privdata, pdev);
> +       if (rc)
> +               return rc;
> +       return 0;

return amd_mp2_pci_init(...);

...

> +static void amd_mp2_pci_remove(struct pci_dev *pdev)
> +{
> +       struct amd_mp2_dev *privdata = pci_get_drvdata(pdev);
> +
> +       amd_stop_all_sensors(privdata->pdev);

> +       pci_clear_master(pdev);
> +       pci_set_drvdata(pdev, NULL);

Same comments as per error path in the ->probe()

> +}

...

> +static const struct pci_device_id amd_mp2_pci_tbl[] = {
> +       {PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_MP2)},

Spaces, please,
 { PCI...() },

> +       {0}

0 is not needed here.

> +};

...

> +#ifndef PCIE_MP2_AMD_H
> +#define PCIE_MP2_AMD_H

+ empty line

> +#include <linux/io-64-nonatomic-lo-hi.h>
> +#include <linux/pci.h>
> +#include <linux/types.h>

> +#define PCI_DEVICE_ID_AMD_MP2  0x15E4

Why not in the C file?

> +/* MP2 C2P Message Registers */
> +#define AMD_C2P_MSG0   0x10500
> +#define AMD_C2P_MSG1   0x10504
> +#define AMD_C2P_MSG2   0x10508
> +#define AMD_C2P_MSG3   0x1050c
> +#define AMD_C2P_MSG4   0x10510
> +#define AMD_C2P_MSG5   0x10514
> +#define AMD_C2P_MSG6   0x10518
> +#define AMD_C2P_MSG7   0x1051c
> +#define AMD_C2P_MSG8   0x10520
> +#define AMD_C2P_MSG9   0x10524
> +
> +/* MP2 P2C Message Registers */
> +#define AMD_P2C_MSG0   0x10680 /*Do not use*/
> +#define AMD_P2C_MSG1   0x10684
> +#define AMD_P2C_MSG2   0x10688
> +#define AMD_P2C_MSG3   0x1068C /*MP2 debug info*/
> +#define AMD_P2C_MSG_INTEN      0x10690 /*MP2 int gen register*/
> +#define AMD_P2C_MSG_INTSTS     0x10694 /*Interrupt sts*/

Do you need all these in the header?

...

> +#define write64 lo_hi_writeq
> +#define read64 lo_hi_readq

Why?! You have writeq() definition or use lo_hi_*() directly.

...

> +int amd_mp2_get_sensor_num(struct pci_dev *dev, u8 *sensor_id);

+ blank line

> +#endif

-- 
With Best Regards,
Andy Shevchenko

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [PATCH v5 3/4] SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH
  2020-05-29 13:42 ` [PATCH v5 3/4] SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH Sandeep Singh
@ 2020-05-29 14:20   ` Andy Shevchenko
  0 siblings, 0 replies; 11+ messages in thread
From: Andy Shevchenko @ 2020-05-29 14:20 UTC (permalink / raw)
  To: Sandeep Singh
  Cc: Jiri Kosina, Benjamin Tissoires, Linux Kernel Mailing List,
	linux-input, Srinivas Pandruvada, Jonathan Cameron, linux-iio,
	Hans de Goede, Shah, Nehal-bakulchandra, Richard Neumann,
	Shyam-sundar.S-k

On Fri, May 29, 2020 at 4:43 PM Sandeep Singh <Sandeep.Singh@amd.com> wrote:
>
> From: Sandeep Singh <sandeep.singh@amd.com>
>
> This part of module will provide the interaction between HID framework
> and client driver.This modules will registered client driver with
> HID framework.

...

> Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
> Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>

Use proper sequence and Co-developed-by if applicable.

> Reported-by: kbuild test robot <lkp@intel.com>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>

What has been reported? Absence of the drivers?

...

> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/kernel.h>
> +#include <linux/slab.h>
> +#include <linux/workqueue.h>
> +#include <linux/hid.h>
> +#include <linux/list.h>
> +#include <linux/platform_device.h>
> +#include <linux/acpi.h>
> +#include <linux/dma-mapping.h>

Keep ordered?

> +#include "amdsfh-hid.h"
> +#include "amd_mp2_pcie.h"
> +#include "hid_descriptor/amd_sfh_hid_descriptor.h"

...

> +void amd_sfh_get_report(struct hid_device *hid, int report_id,
> +                       int report_type)
> +{
> +       struct amdtp_hid_data *hid_data = hid->driver_data;
> +       struct amdtp_cl_data *cli_data = hid_data->cli_data;
> +       int i;
> +
> +       for (i = 0; i < cli_data->num_hid_devices; i++) {
> +               if (cli_data->hid_sensor_hubs[i] == hid) {

> +                       struct request_list *new_request = kzalloc
> +                                 (sizeof(*new_request), GFP_KERNEL);

Bad indentation.

> +                       new_request->current_index = i;

Huh? NULL pointer dereference!

> +                       new_request->sensor_idx = cli_data->sensor_idx[i];
> +                       new_request->hid = hid;
> +                       new_request->report_type = report_type;
> +                       new_request->report_id = report_id;
> +                       cli_data->report_id[i] = report_id;
> +                       cli_data->request_done[i] = false;
> +                       list_add(&new_request->list, &req_list.list);
> +                       break;
> +               }
> +       }
> +       schedule_delayed_work(&cli_data->work, 0);
> +}
> +EXPORT_SYMBOL(amd_sfh_get_report);

...

> +static void amd_sfh_work_buffer(struct work_struct *work)
> +{
> +       struct amdtp_cl_data *cli_data = cl_data_context;
> +       unsigned int i;

> +       u8 report_size = 0;

Redundant assignment.

> +       for (i = 0; i < cli_data->num_hid_devices; i++) {
> +               report_size = get_input_report(cli_data->sensor_idx[i],
> +                                              cli_data->report_id[i],
> +                               cli_data->input_report[i],
> +                               cli_data->sensor_virt_addr[i]);
> +               hid_input_report(cli_data->hid_sensor_hubs[i],
> +                                HID_INPUT_REPORT,
> +                                cli_data->input_report[i], report_size, 0);
> +               }
> +
> +       schedule_delayed_work(&cli_data->work_buffer, PERIOD);
> +}

...

> +static int amd_sfh_hid_client_probe(struct platform_device *pdev)
> +{
> +       struct amd_mp2_sensor_info info;
> +       int rc = 0;
> +       int i;
> +       struct amdtp_cl_device *cl_dev;
> +       struct amdtp_cl_data *cl_data;
> +       u32 feature_report_size = 0;
> +       u32 input_report_size = 0;

Are you sure all those assignments are needed?

> +       cl_dev->pdev = pci_get_device(PCI_VENDOR_ID_AMD,
> +                                     PCI_DEVICE_ID_AMD_MP2, NULL);

I'm not quite sure you understand what you are doing here.
The code below is full of leak.

> +       if (!cl_dev->pdev)

> +               return -ENOMEM;

What?

...

> +       cl_data = kzalloc(sizeof(*cl_data), GFP_KERNEL);

> +       cl_data->num_hid_devices = amd_mp2_get_sensor_num
> +                                  (cl_dev->pdev, &cl_data->sensor_idx[0]);

Strange indentation.
NULL pointer dereference!


> +       for (i = 0; i < cl_data->num_hid_devices; i++) {

> +               cl_data->sensor_virt_addr[i] = dma_alloc_coherent
> +                       (&cl_dev->pdev->dev, sizeof(int) * 8,
> +                       &cl_data->sensor_phy_addr[i], GFP_KERNEL);

Indentation.

> +               cl_data->report_descr_size[i] = get_descriptor_size
> +                               (cl_data->sensor_idx[i], descr_size);
> +
> +               feature_report_size = get_descriptor_size
> +                               (cl_data->sensor_idx[i], feature_size);
> +
> +               input_report_size =  get_descriptor_size
> +                       (cl_data->sensor_idx[i], input_size);

Ditto.

> +               cl_data->feature_report[i] = kzalloc(feature_report_size,
> +                                                    GFP_KERNEL);
> +               cl_data->input_report[i] = kzalloc(input_report_size,
> +                                                  GFP_KERNEL);

NULL pointer dereference.

You probably need to understand how memory allocation and heap usage works.

> +               info.period = PERIOD;
> +               info.sensor_idx = cl_data->sensor_idx[i];
> +               info.phy_address = cl_data->sensor_phy_addr[i];

> +               cl_data->report_descr[i] = kzalloc
> +                       (cl_data->report_descr_size[i], GFP_KERNEL);

Indentation.

> +               if (!cl_data->report_descr[i])
> +                       return -ENOMEM;
> +               rc = get_report_descriptor(cl_data->sensor_idx[i],
> +                                          cl_data->report_descr[i]);
> +               rc = amdtp_hid_probe(cl_data->cur_hid_dev, cl_data);
> +               amd_start_sensor(cl_dev->pdev, info);
> +               cl_data->sensor_sts[i] = 1;
> +       }
> +
> +       cl_dev->cl_data = cl_data;
> +       cl_data_context = cl_data;
> +       platform_set_drvdata(pdev, cl_dev);
> +       schedule_delayed_work(&cl_data->work_buffer, PERIOD);
> +       return 0;
> +}

...

> +static int amd_sfh_hid_client_remove(struct platform_device *pdev)
> +{
> +       int i;
> +       struct amdtp_cl_device *cl_dev;
> +       struct amdtp_cl_data *cl_data;

Reversed xmas tree, please.

> +       cl_dev = platform_get_drvdata(pdev);

> +       if (!(cl_dev))
> +               return -EINVAL;

When this will be true?!

This can be done directly in the definition block above.

> +       cl_data = cl_dev->cl_data;

> +       if (!(cl_data))
> +               return -EINVAL;

Ditto.

> +       for (i = 0; i < cl_data->num_hid_devices; i++)
> +               amd_stop_sensor(cl_dev->pdev, i);
> +
> +       cancel_delayed_work_sync(&cl_data->work);
> +       cancel_delayed_work_sync(&cl_data->work_buffer);
> +       amdtp_hid_remove(cl_data);
> +
> +       for (i = 0; i < cl_data->num_hid_devices; i++) {
> +               if (cl_data->sensor_virt_addr[i])
> +                       dma_free_coherent(&cl_dev->pdev->dev, 8 * sizeof(int),
> +                                         cl_data->sensor_virt_addr[i],
> +                                         cl_data->sensor_phy_addr[i]);
> +       }
> +

> +       kfree(cl_data);

Why not devm in the probe and nothing here?

> +       pr_info("%s:%s Exit\n", DRIVER_NAME, __func__);

No, no. Remove this noise.

> +       return 0;
> +}

...

> +static const struct acpi_device_id amd_sfh_acpi_match[] = { {
> +                                       "AMDI0080" },

> +                                       { },

No comma on terminators.

> +};

Indentation is horrible. You have to look into existing drivers
(better newer ones) to see how to have done things like this.

> +

Blank line in wrong place...

> +MODULE_DEVICE_TABLE(acpi, amd_sfh_acpi_match);

...should be here.

> +static struct platform_driver amd_sfh_plat_driver = {
> +       .probe = amd_sfh_hid_client_probe,
> +       .remove = amd_sfh_hid_client_remove,
> +       .driver = {
> +                       .name = "amd_sfh_platform",

> +                       .acpi_match_table = ACPI_PTR(amd_sfh_acpi_match),

ACPI_PTR() is redundant and/or provokes compilation warnings.

> +       },
> +};
> +module_platform_driver(amd_sfh_plat_driver);

+ blank line.

...

> +static int amdtp_hid_parse(struct hid_device *hid)
> +{
> +       struct amdtp_hid_data *hid_data = hid->driver_data;
> +       struct amdtp_cl_data *cli_data = hid_data->cli_data;

> +       int rc;
> +
> +       rc = hid_parse_report(hid, cli_data->report_descr[hid_data->index],
> +                             cli_data->report_descr_size[hid_data->index]);
> +       if (rc)
> +               return rc;
> +       return 0;

return hid_parse_report(...);

> +}

...

> +static void amdtp_hid_request(struct hid_device *hid, struct hid_report *rep,
> +                             int reqtype)
> +{
> +       switch (reqtype) {
> +       case HID_REQ_GET_REPORT:
> +               amd_sfh_get_report(hid, rep->id, rep->type);
> +               break;
> +       case HID_REQ_SET_REPORT:
> +               amd_sfh_set_report(hid, rep->id, reqtype);
> +               break;
> +       }

default?

> +}

...

> +static int amdtp_wait_for_response(struct hid_device *hid)
> +{
> +       struct amdtp_hid_data *hid_data =  hid->driver_data;
> +       struct amdtp_cl_data *cli_data = hid_data->cli_data;
> +       int i = 0;
> +
> +       for (i = 0; i < cli_data->num_hid_devices; i++) {
> +               if (cli_data->hid_sensor_hubs[i] == hid)
> +                       break;
> +       }
> +       if (!cli_data->request_done[i])
> +               wait_event_interruptible_timeout(hid_data->hid_wait,
> +                                                cli_data->request_done[i],
> +                                                1500);

> +       if (!cli_data->request_done[i]) {

Shouldn't you rather check returned value from previous call?

> +               hid_err(hid,
> +                       "timeout waiting for response from  device\n");
> +               return -ETIMEDOUT;
> +       }
> +       cli_data->request_done[i] = false;
> +
> +       return 0;
> +}

...

> +       hid = hid_allocate_device();
> +       if (IS_ERR(hid)) {

> +               rc = PTR_ERR(hid);
> +               return -ENOMEM;

Huh?!

> +       }

...


> +#ifndef AMDSFH_HID_H
> +#define AMDSFH_HID_H

> +#include <linux/debugfs.h>

What?! I see useds of other stuff, but this...

-- 
With Best Regards,
Andy Shevchenko

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub
  2020-05-29 13:42 [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Sandeep Singh
                   ` (3 preceding siblings ...)
  2020-05-29 13:42 ` [PATCH v5 4/4] SFH: Create HID report to Enable support of AMD sensor fusion Hub (SFH) Sandeep Singh
@ 2020-05-29 14:21 ` Andy Shevchenko
  2020-07-28 14:58   ` Marco Felsch
  4 siblings, 1 reply; 11+ messages in thread
From: Andy Shevchenko @ 2020-05-29 14:21 UTC (permalink / raw)
  To: Sandeep Singh
  Cc: Jiri Kosina, Benjamin Tissoires, Linux Kernel Mailing List,
	linux-input, Srinivas Pandruvada, Jonathan Cameron, linux-iio,
	Hans de Goede, Shah, Nehal-bakulchandra, Richard Neumann,
	Shyam-sundar.S-k

On Fri, May 29, 2020 at 4:42 PM Sandeep Singh <Sandeep.Singh@amd.com> wrote:
>
> From: Sandeep Singh <sandeep.singh@amd.com>
>
> AMD SFH(Sensor Fusion Hub) is HID based driver.SFH FW
> is part of MP2 processor (MP2 which is an ARM® Cortex-M4
> core based co-processor to x86) and it runs on MP2 where
> in driver resides on X86.The driver functionalities are
> divided  into three parts:-
>
> 1: amd-mp2-pcie:-       This module will communicate with MP2 FW and
>                         provide that data into DRAM.
> 2: Client driver :-     This part for driver will use dram data and
>                         convert that data into HID format based on
>                         HID reports.
> 3: Transport driver :-  This part of driver will communicate with
>                         HID core. Communication between devices and
>                         HID core is mostly done via HID reports
>
> In terms of architecture it is much more reassembles like
> ISH(Intel Integrated Sensor Hub). However the major difference
> is all the hid reports are generated as part of kernel driver.
> AMD SFH driver taken reference from ISH in terms of
> design and functionalities at fewer location.
>
> AMD sensor fusion Hub is part of a SOC 17h family based platforms.
> The solution is working well on several OEM products.
> AMD SFH uses HID over PCIe bus.
>

I can't believe this is fifth version.
Guys, you have to do much more work on these drivers.

> Sandeep Singh (4):
>   SFH: Add maintainers and documentation for AMD SFH based on HID
>     framework
>   SFH: PCI driver to add support of AMD sensor fusion Hub using HID
>     framework
>   SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH)
>   SFH: Create HID report to Enable support of AMD sensor fusion Hub
>     (SFH)
>
> Changes since v1:
>         -Fix auto build test warnings
>         -Fix warnings captured using smatch
>         -Changes suggested by Dan Carpenter
>
> Links of the review comments for v1:
>         [1] https://patchwork.kernel.org/patch/11325163/
>         [2] https://patchwork.kernel.org/patch/11325167/
>         [3] https://patchwork.kernel.org/patch/11325171/
>         [4] https://patchwork.kernel.org/patch/11325187/
>
>
> Changes since v2:
>         -Debugfs divided into another patch
>         -Fix some cosmetic changes
>         -Fix for review comments
>          Reported and Suggested by:-  Srinivas Pandruvada
>
> Links of the review comments for v2:
>         [1] https://patchwork.kernel.org/patch/11355491/
>         [2] https://patchwork.kernel.org/patch/11355495/
>         [3] https://patchwork.kernel.org/patch/11355499/
>         [4] https://patchwork.kernel.org/patch/11355503/
>
>
> Changes since v3:
>         -removed debugfs suggested by - Benjamin Tissoires
>
> Links of the review comments for v3:
>         [1] https://lkml.org/lkml/2020/2/11/1256
>         [2] https://lkml.org/lkml/2020/2/11/1257
>         [3] https://lkml.org/lkml/2020/2/11/1258
>         [4] https://lkml.org/lkml/2020/2/11/1259
>         [5] https://lkml.org/lkml/2020/2/11/1260
>
>
> Changes since v4:
>         - Rework done based on review comments by - Andy Shevchenko
>         - changes done based on suggested by -Richard Neumann
>
> Links of the review comments for v4:
>         [1] https://lkml.org/lkml/2020/2/26/1360
>         [2] https://lkml.org/lkml/2020/2/26/1361
>         [3] https://lkml.org/lkml/2020/2/26/1362
>         [4] https://lkml.org/lkml/2020/2/26/1363
>         [5] https://lkml.org/lkml/2020/2/27/1
>
>
> Sandeep Singh (4):
>   SFH: Add maintainers and documentation for AMD SFH based      on HID
>     framework
>   SFH: PCI driver to add support of AMD sensor fusion Hub using HID
>     framework
>   SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH
>   SFH: Create HID report to Enable support of AMD sensor fusion Hub
>     (SFH)
>
>  Documentation/hid/amd-sfh-hid.rst                  | 160 +++++
>  MAINTAINERS                                        |   8 +
>  drivers/hid/Kconfig                                |   2 +
>  drivers/hid/Makefile                               |   1 +
>  drivers/hid/amd-sfh-hid/Kconfig                    |  21 +
>  drivers/hid/amd-sfh-hid/Makefile                   |  16 +
>  drivers/hid/amd-sfh-hid/amd_mp2_pcie.c             | 196 +++++++
>  drivers/hid/amd-sfh-hid/amd_mp2_pcie.h             | 137 +++++
>  drivers/hid/amd-sfh-hid/amdsfh-hid-client.c        | 256 ++++++++
>  drivers/hid/amd-sfh-hid/amdsfh-hid.c               | 179 ++++++
>  drivers/hid/amd-sfh-hid/amdsfh-hid.h               |  84 +++
>  .../hid_descriptor/amd_sfh_hid_descriptor.c        | 251 ++++++++
>  .../hid_descriptor/amd_sfh_hid_descriptor.h        | 125 ++++
>  .../hid_descriptor/amd_sfh_hid_report_descriptor.h | 642 +++++++++++++++++++++
>  14 files changed, 2078 insertions(+)
>  create mode 100644 Documentation/hid/amd-sfh-hid.rst
>  create mode 100644 drivers/hid/amd-sfh-hid/Kconfig
>  create mode 100644 drivers/hid/amd-sfh-hid/Makefile
>  create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.c
>  create mode 100644 drivers/hid/amd-sfh-hid/amd_mp2_pcie.h
>  create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid-client.c
>  create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid.c
>  create mode 100644 drivers/hid/amd-sfh-hid/amdsfh-hid.h
>  create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.c
>  create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_descriptor.h
>  create mode 100644 drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_descriptor.h
>
> --
> 2.7.4
>


-- 
With Best Regards,
Andy Shevchenko

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub
  2020-05-29 14:21 ` [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Andy Shevchenko
@ 2020-07-28 14:58   ` Marco Felsch
  2020-07-28 15:05     ` Richard Neumann
  0 siblings, 1 reply; 11+ messages in thread
From: Marco Felsch @ 2020-07-28 14:58 UTC (permalink / raw)
  To: Andy Shevchenko
  Cc: Sandeep Singh, Jiri Kosina, Benjamin Tissoires,
	Linux Kernel Mailing List, linux-input, Srinivas Pandruvada,
	Jonathan Cameron, linux-iio, Hans de Goede, Shah,
	Nehal-bakulchandra, Richard Neumann, Shyam-sundar.S-k

Hi,

On 20-05-29 17:21, Andy Shevchenko wrote:
> On Fri, May 29, 2020 at 4:42 PM Sandeep Singh <Sandeep.Singh@amd.com> wrote:
> >
> > From: Sandeep Singh <sandeep.singh@amd.com>
> >
> > AMD SFH(Sensor Fusion Hub) is HID based driver.SFH FW
> > is part of MP2 processor (MP2 which is an ARM® Cortex-M4
> > core based co-processor to x86) and it runs on MP2 where
> > in driver resides on X86.The driver functionalities are
> > divided  into three parts:-
> >
> > 1: amd-mp2-pcie:-       This module will communicate with MP2 FW and
> >                         provide that data into DRAM.
> > 2: Client driver :-     This part for driver will use dram data and
> >                         convert that data into HID format based on
> >                         HID reports.
> > 3: Transport driver :-  This part of driver will communicate with
> >                         HID core. Communication between devices and
> >                         HID core is mostly done via HID reports
> >
> > In terms of architecture it is much more reassembles like
> > ISH(Intel Integrated Sensor Hub). However the major difference
> > is all the hid reports are generated as part of kernel driver.
> > AMD SFH driver taken reference from ISH in terms of
> > design and functionalities at fewer location.
> >
> > AMD sensor fusion Hub is part of a SOC 17h family based platforms.
> > The solution is working well on several OEM products.
> > AMD SFH uses HID over PCIe bus.
> >
> 
> I can't believe this is fifth version.
> Guys, you have to do much more work on these drivers.

Is there any active development addressing Andy's comments? Else can we
support you to bring these patches mainline?

Regards,
  Marco

^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub
  2020-07-28 14:58   ` Marco Felsch
@ 2020-07-28 15:05     ` Richard Neumann
  2020-07-28 15:20       ` Marco Felsch
  0 siblings, 1 reply; 11+ messages in thread
From: Richard Neumann @ 2020-07-28 15:05 UTC (permalink / raw)
  To: Marco Felsch, Andy Shevchenko
  Cc: Sandeep Singh, Jiri Kosina, Benjamin Tissoires,
	Linux Kernel Mailing List, linux-input, Srinivas Pandruvada,
	Jonathan Cameron, linux-iio, Hans de Goede, Shah,
	Nehal-bakulchandra, Shyam-sundar.S-k

Hi,

Am Dienstag, den 28.07.2020, 16:58 +0200 schrieb Marco Felsch:
> Hi,
> 
> On 20-05-29 17:21, Andy Shevchenko wrote:
> > On Fri, May 29, 2020 at 4:42 PM Sandeep Singh <
> > Sandeep.Singh@amd.com> wrote:
> > > From: Sandeep Singh <sandeep.singh@amd.com>
> > > 
> > > AMD SFH(Sensor Fusion Hub) is HID based driver.SFH FW
> > > is part of MP2 processor (MP2 which is an ARM® Cortex-M4
> > > core based co-processor to x86) and it runs on MP2 where
> > > in driver resides on X86.The driver functionalities are
> > > divided  into three parts:-
> > > 
> > > 1: amd-mp2-pcie:-       This module will communicate with MP2 FW
> > > and
> > >                         provide that data into DRAM.
> > > 2: Client driver :-     This part for driver will use dram data
> > > and
> > >                         convert that data into HID format based
> > > on
> > >                         HID reports.
> > > 3: Transport driver :-  This part of driver will communicate with
> > >                         HID core. Communication between devices
> > > and
> > >                         HID core is mostly done via HID reports
> > > 
> > > In terms of architecture it is much more reassembles like
> > > ISH(Intel Integrated Sensor Hub). However the major difference
> > > is all the hid reports are generated as part of kernel driver.
> > > AMD SFH driver taken reference from ISH in terms of
> > > design and functionalities at fewer location.
> > > 
> > > AMD sensor fusion Hub is part of a SOC 17h family based
> > > platforms.
> > > The solution is working well on several OEM products.
> > > AMD SFH uses HID over PCIe bus.
> > > 
> > 
> > I can't believe this is fifth version.
> > Guys, you have to do much more work on these drivers.
> 
> Is there any active development addressing Andy's comments? Else can
> we
> support you to bring these patches mainline?
> 
> Regards,
>   Marco

I did some major refactoring¹ on the v4 patch series and am currently
providing it for Arch Linux as a DKMS package in the AUR².
A teensy bit of my changes seems to have influenced the v5 version but
I actually did some major changes, like strictly separating the HID,
platform and PCI driver parts.
I did not submit my changes for upstream so far, since I do not want to
undermine AMD's work on this nor cause competing driver
implementations.

Sincerely,

Richard

[1] https://github.com/conqp/linux/tree/amd-sfh-hid/drivers/hid/amd-sfh-hid
[2] https://aur.archlinux.org/packages/amd-sfh-hid-dkms/


^ permalink raw reply	[flat|nested] 11+ messages in thread

* Re: [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub
  2020-07-28 15:05     ` Richard Neumann
@ 2020-07-28 15:20       ` Marco Felsch
  0 siblings, 0 replies; 11+ messages in thread
From: Marco Felsch @ 2020-07-28 15:20 UTC (permalink / raw)
  To: Richard Neumann
  Cc: Andy Shevchenko, Sandeep Singh, Jiri Kosina, Benjamin Tissoires,
	Linux Kernel Mailing List, linux-input, Srinivas Pandruvada,
	Jonathan Cameron, linux-iio, Hans de Goede, Shah,
	Nehal-bakulchandra, Shyam-sundar.S-k

Hi Richard,

On 20-07-28 17:05, Richard Neumann wrote:
> Hi,
> 
> Am Dienstag, den 28.07.2020, 16:58 +0200 schrieb Marco Felsch:
> > Hi,
> > 
> > On 20-05-29 17:21, Andy Shevchenko wrote:
> > > On Fri, May 29, 2020 at 4:42 PM Sandeep Singh <
> > > Sandeep.Singh@amd.com> wrote:
> > > > From: Sandeep Singh <sandeep.singh@amd.com>
> > > > 

...

> > > I can't believe this is fifth version.
> > > Guys, you have to do much more work on these drivers.
> > 
> > Is there any active development addressing Andy's comments? Else can
> > we
> > support you to bring these patches mainline?
> > 
> > Regards,
> >   Marco
> 
> I did some major refactoring¹ on the v4 patch series and am currently
> providing it for Arch Linux as a DKMS package in the AUR².
> A teensy bit of my changes seems to have influenced the v5 version but
> I actually did some major changes, like strictly separating the HID,
> platform and PCI driver parts.
> I did not submit my changes for upstream so far, since I do not want to
> undermine AMD's work on this nor cause competing driver
> implementations.
> 
> Sincerely,
> 
> Richard
> 
> [1] https://github.com/conqp/linux/tree/amd-sfh-hid/drivers/hid/amd-sfh-hid
> [2] https://aur.archlinux.org/packages/amd-sfh-hid-dkms/

Thanks for the links :) We should get this work done to improve user
experience. Let's wait for the AMD developers comments and then we can
discuss the further steps :)

Regards,
  Marco

^ permalink raw reply	[flat|nested] 11+ messages in thread

end of thread, back to index

Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-29 13:42 [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Sandeep Singh
2020-05-29 13:42 ` [PATCH v5 1/4] SFH: Add maintainers and documentation for AMD SFH based on HID framework Sandeep Singh
2020-05-29 13:42 ` [PATCH v5 2/4] SFH: PCI driver to add support of AMD sensor fusion Hub using " Sandeep Singh
2020-05-29 14:03   ` Andy Shevchenko
2020-05-29 13:42 ` [PATCH v5 3/4] SFH: Transport Driver to add support of AMD Sensor Fusion Hub (SFH Sandeep Singh
2020-05-29 14:20   ` Andy Shevchenko
2020-05-29 13:42 ` [PATCH v5 4/4] SFH: Create HID report to Enable support of AMD sensor fusion Hub (SFH) Sandeep Singh
2020-05-29 14:21 ` [PATCH v5 0/4] SFH: Add Support for AMD Sensor Fusion Hub Andy Shevchenko
2020-07-28 14:58   ` Marco Felsch
2020-07-28 15:05     ` Richard Neumann
2020-07-28 15:20       ` Marco Felsch

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