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35 Commits

Author SHA1 Message Date
Basavaraj Natikar
7f016b35ca HID: amd_sfh: Add interrupt handler to process interrupts 
On newer AMD platforms with SFH, it is observed that random interrupts
get generated on the SFH hardware and until this is cleared the firmware
sensor processing is stalled, resulting in no data been received to
driver side.

Add routines to handle these interrupts, so that firmware operations are
not stalled.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2022-02-14 16:28:51 +01:00
Basavaraj Natikar
fb75a3791a HID: amd_sfh: Add functionality to clear interrupts 
Newer AMD platforms with SFH may generate interrupts on some events
which are unwarranted. Until this is cleared the actual MP2 data
processing maybe stalled in some cases.

Add a mechanism to clear the pending interrupts (if any) during the
driver initialization and sensor command operations.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2022-02-14 16:28:51 +01:00
Basavaraj Natikar
b300667b33 HID: amd_sfh: Disable the interrupt for all command 
Sensor data is processed in polling mode. Hence disable the interrupt
for all sensor command.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2022-02-14 16:28:51 +01:00
Basavaraj Natikar
aa0b724a2b HID: amd_sfh: Correct the structure field name 
Misinterpreted intr_enable field name. Hence correct the structure
field name accordingly to reflect the functionality.

Fixes: f264481ad6 ("HID: amd_sfh: Extend driver capabilities for multi-generation support")
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2022-02-14 16:28:51 +01:00
Basavaraj Natikar
0cf74235f4 HID: amd_sfh: Handle amd_sfh work buffer in PM ops 
Since in the current amd_sfh design the sensor data is periodically
obtained in the form of poll data, during the suspend/resume cycle,
scheduling a delayed work adds no value.

So, cancel the work and restart back during the suspend/resume cycle
respectively.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2022-02-14 16:28:51 +01:00
Basavaraj Natikar
91aaea527b HID: amd_sfh: Add illuminance mask to limit ALS max value 
ALS illuminance value present only in first 15 bits from SFH firmware
for V2 platforms. Hence added a mask of 15 bit to limit ALS max
illuminance values to get correct illuminance value.

Fixes: 0aad9c95eb ("HID: amd_sfh: Extend ALS support for newer AMD platform")
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2022-02-02 15:04:26 +01:00
Basavaraj Natikar
a7072c01c3 HID: amd_sfh: Increase sensor command timeout 
HPD sensors take more time to initialize. Hence increasing sensor
command timeout to get response with status within a max timeout.

Fixes: 173709f50e ("HID: amd_sfh: Add command response to check command status")
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2022-02-02 15:04:26 +01:00
Jiri Kosina
a6e757e3a1 Merge branch 'for-5.16/amd-sfh' into for-linus 
- code cleanups (Basavaraj Natikar, Christophe JAILLET)
 2021-11-05 12:08:34 +01:00
Basavaraj Natikar
f75203cd8b HID: amd_sfh: Update Copyright details 
Update the Copyright header and Author

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-09-27 10:01:44 +02:00
Basavaraj Natikar
ba70a4ff23 HID: amd_sfh: switch from 'pci_' to 'dev_' API 
The wrappers pci_set_drvdata or pci_get_drvdata changed to
dev_set_drvdata or dev_get_drvdata.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-09-27 10:01:44 +02:00
Basavaraj Natikar
c45d2b54cc HID: amd_sfh: Use dma_set_mask_and_coherent() 
Use dma_set_mask_and_coherent() to set both the streaming and
coherent masks.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-09-27 10:01:44 +02:00
Basavaraj Natikar
88a04049c0 HID: amd_sfh: Fix potential NULL pointer dereference 
The cl_data field of a privdata must be allocated and updated before
using in amd_sfh_hid_client_init() function.

Hence handling NULL pointer cl_data accordingly.

Fixes: d46ef750ed ("HID: amd_sfh: Fix potential NULL pointer dereference")
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-09-27 10:00:43 +02:00
Evgeny Novikov
d46ef750ed HID: amd_sfh: Fix potential NULL pointer dereference 
devm_add_action_or_reset() can suddenly invoke amd_mp2_pci_remove() at
registration that will cause NULL pointer dereference since
corresponding data is not initialized yet. The patch moves
initialization of data before devm_add_action_or_reset().

Found by Linux Driver Verification project (linuxtesting.org).

[jkosina@suse.cz: rebase]
Signed-off-by: Evgeny Novikov <novikov@ispras.ru>
Acked-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-09-16 09:14:33 +02:00
Christophe JAILLET
e70b703347 HID: amd_sfh: switch from 'pci_' to 'dma_' API 
The wrappers in include/linux/pci-dma-compat.h should go away.

The patch has been generated with the coccinelle script below.

It has been compile tested.

@@
@@
-    PCI_DMA_BIDIRECTIONAL
+    DMA_BIDIRECTIONAL

@@
@@
-    PCI_DMA_TODEVICE
+    DMA_TO_DEVICE

@@
@@
-    PCI_DMA_FROMDEVICE
+    DMA_FROM_DEVICE

@@
@@
-    PCI_DMA_NONE
+    DMA_NONE

@@
expression e1, e2, e3;
@@
-    pci_alloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3;
@@
-    pci_zalloc_consistent(e1, e2, e3)
+    dma_alloc_coherent(&e1->dev, e2, e3, GFP_)

@@
expression e1, e2, e3, e4;
@@
-    pci_free_consistent(e1, e2, e3, e4)
+    dma_free_coherent(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_single(e1, e2, e3, e4)
+    dma_map_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_single(e1, e2, e3, e4)
+    dma_unmap_single(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4, e5;
@@
-    pci_map_page(e1, e2, e3, e4, e5)
+    dma_map_page(&e1->dev, e2, e3, e4, e5)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_page(e1, e2, e3, e4)
+    dma_unmap_page(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_map_sg(e1, e2, e3, e4)
+    dma_map_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_unmap_sg(e1, e2, e3, e4)
+    dma_unmap_sg(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_cpu(e1, e2, e3, e4)
+    dma_sync_single_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_single_for_device(e1, e2, e3, e4)
+    dma_sync_single_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_cpu(e1, e2, e3, e4)
+    dma_sync_sg_for_cpu(&e1->dev, e2, e3, e4)

@@
expression e1, e2, e3, e4;
@@
-    pci_dma_sync_sg_for_device(e1, e2, e3, e4)
+    dma_sync_sg_for_device(&e1->dev, e2, e3, e4)

@@
expression e1, e2;
@@
-    pci_dma_mapping_error(e1, e2)
+    dma_mapping_error(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_dma_mask(e1, e2)
+    dma_set_mask(&e1->dev, e2)

@@
expression e1, e2;
@@
-    pci_set_consistent_dma_mask(e1, e2)
+    dma_set_coherent_mask(&e1->dev, e2)

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-09-15 16:27:55 +02:00
Jiri Kosina
56e527b0f7 Merge branch 'for-5.15/amd-sfh' into for-linus 
- Updates to the existing FW reporting mechanism, MP2 FW
  status checks, adding proper power management support for amd-sfh
 2021-09-01 21:54:57 +02:00
Basavaraj Natikar
e665775591 HID: amd_sfh: Add dyndbg prints for debugging 
Add dynamic debug for debugging sensors states during
initialization, stop, suspend and resume.

Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-08-20 14:48:49 +02:00
Basavaraj Natikar
0873d1afac HID: amd_sfh: Add support for PM suspend and resume 
Add support for power management routines.

Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-08-20 14:48:49 +02:00
Basavaraj Natikar
ac15e9196f HID: amd_sfh: Move hid probe after sensor is enabled 
Earlier platforms don’t have sensor status checking mechanism.
Sensors are always enabled without checking sensor status.
Hence invoke hid probe only after the sensor is enabled by
checking sensor status.

Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-08-20 14:48:49 +02:00
Basavaraj Natikar
173709f50e HID: amd_sfh: Add command response to check command status 
Sometimes sensor enable/disable may take time, without checking the
actual status bits from MP2 FW can lead the amd-sfh to misbehave.

Hence add a status check of enable/disable command
by waiting on the command response before sending the next
command to FW.

Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-08-20 14:48:48 +02:00
Basavaraj Natikar
3978f54817 HID: amd_sfh: Fix period data field to enable sensor 
Existing amd-sfh driver is programming the MP2 firmware period field in
units of jiffies, but the MP2 firmware expects in milliseconds unit.

Changing it to milliseconds.

Fixes: 4b2c53d93a ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-08-20 14:48:48 +02:00
Dylan MacKenzie
8aa6348634 HID: amd_sfh: Use correct MMIO register for DMA address 
amd_stop_sensor_v2 accidentally used a different MMIO register than
amd_start_sensor_v2 for the DMA address.

Fixes: f264481ad6 ("HID: amd_sfh: Extend driver capabilities for multi-generation support")
Signed-off-by: Dylan MacKenzie <ecstaticmorse@gmail.com>
Acked-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-07-15 21:40:47 +02:00
Basavaraj Natikar
24a31ea949 HID: amd_sfh: Add initial support for HPD sensor 
Add Human Presence Detection (HPD) sensors support
on AMD next generation HPD supported platforms.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Reviewed-by: Nehal Shah <nehal-bakulchandra.shah@amd.com>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-06-24 14:28:03 +02:00
Basavaraj Natikar
0aad9c95eb HID: amd_sfh: Extend ALS support for newer AMD platform 
Extend ALS support for AMD next generation SoC's like Renoir, Cezanne.
AMD next generation platforms use C2P message register to read ALS
sensor data instead of DRAM address.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Reviewed-by: Nehal Shah <nehal-bakulchandra.shah@amd.com>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-06-24 14:28:03 +02:00
Basavaraj Natikar
f264481ad6 HID: amd_sfh: Extend driver capabilities for multi-generation support 
Initial driver support only covered the first generation of SFH
platforms. In order to support the future generations introduce
ops selection to distinguish the different platforms.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Reviewed-by: Nehal Shah <nehal-bakulchandra.shah@amd.com>
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-06-24 14:28:03 +02:00
Basavaraj Natikar
5ad755fd2b HID: amd_sfh: Fix memory leak in amd_sfh_work 
Kmemleak tool detected a memory leak in the amd_sfh driver.

====================
unreferenced object 0xffff88810228ada0 (size 32):
  comm "insmod", pid 3968, jiffies 4295056001 (age 775.792s)
  hex dump (first 32 bytes):
    00 20 73 1f 81 88 ff ff 00 01 00 00 00 00 ad de  . s.............
    22 01 00 00 00 00 ad de 01 00 02 00 00 00 00 00  "...............
  backtrace:
    [<000000007b4c8799>] kmem_cache_alloc_trace+0x163/0x4f0
    [<0000000005326893>] amd_sfh_get_report+0xa4/0x1d0 [amd_sfh]
    [<000000002a9e5ec4>] amdtp_hid_request+0x62/0x80 [amd_sfh]
    [<00000000b8a95807>] sensor_hub_get_feature+0x145/0x270 [hid_sensor_hub]
    [<00000000fda054ee>] hid_sensor_parse_common_attributes+0x215/0x460 [hid_sensor_iio_common]
    [<0000000021279ecf>] hid_accel_3d_probe+0xff/0x4a0 [hid_sensor_accel_3d]
    [<00000000915760ce>] platform_probe+0x6a/0xd0
    [<0000000060258a1f>] really_probe+0x192/0x620
    [<00000000fa812f2d>] driver_probe_device+0x14a/0x1d0
    [<000000005e79f7fd>] __device_attach_driver+0xbd/0x110
    [<0000000070d15018>] bus_for_each_drv+0xfd/0x160
    [<0000000013a3c312>] __device_attach+0x18b/0x220
    [<000000008c7b4afc>] device_initial_probe+0x13/0x20
    [<00000000e6e99665>] bus_probe_device+0xfe/0x120
    [<00000000833fa90b>] device_add+0x6a6/0xe00
    [<00000000fa901078>] platform_device_add+0x180/0x380
====================

The fix is to freeing request_list entry once the processed entry is
removed from the request_list.

Fixes: 4b2c53d93a ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-05-27 15:40:34 +02:00
Basavaraj Natikar
e3d6a59996 HID: amd_sfh: Use devm_kzalloc() instead of kzalloc() 
Replace kzalloc with devm_kzalloc in driver initialization sequence. The
allocation can be tied to the lifetime of the amd_sfh driver. This cleans
up an exit & error paths, since the objects does not need to be
explicitly freed anymore.

Fixes: 4b2c53d93a ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Reviewed-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-05-27 15:40:34 +02:00
Hans de Goede
25615e454a AMD_SFH: Add DMI quirk table for BIOS-es which don't set the activestatus bits 
Some BIOS-es do not initialize the activestatus bits of the AMD_P2C_MSG3
register. This cause the AMD_SFH driver to not register any sensors even
though the laptops in question do have sensors.

Add a DMI quirk-table for specifying sensor-mask overrides based on
DMI match, to make the sensors work OOTB on these laptop models.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=199715
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1651886
Fixes: 4f567b9f81 ("SFH: PCIe driver to add support of AMD sensor fusion hub")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Sandeep Singh <sandeep.singh@amd.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-03-08 16:32:32 +01:00
Hans de Goede
952f7d10c6 AMD_SFH: Add sensor_mask module parameter 
Add a sensor_mask module parameter which can be used to override the
sensor-mask read from the activestatus bits of the AMD_P2C_MSG3
registers. Some BIOS-es do not program the activestatus bits, leading
to the AMD-SFH driver not registering any HID devices even though the
laptop in question does actually have sensors.

While at it also fix the wrong indentation of the MAGNO_EN define.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=199715
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1651886
Fixes: 4f567b9f81 ("SFH: PCIe driver to add support of AMD sensor fusion hub")
Suggested-by: Richard Neumann <mail@richard-neumann.de>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Sandeep Singh <sandeep.singh@amd.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-03-08 16:32:32 +01:00
Hans de Goede
a9e54f4b62 AMD_SFH: Removed unused activecontrolstatus member from the amd_mp2_dev struct 
This value is only used once inside amd_mp2_get_sensor_num(),
so there is no need to store this in the amd_mp2_dev struct,
amd_mp2_get_sensor_num() can simple use a local variable for this.

Fixes: 4f567b9f81 ("SFH: PCIe driver to add support of AMD sensor fusion hub")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Sandeep Singh <sandeep.singh@amd.com
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-03-08 16:32:32 +01:00
Arnd Bergmann
de30491e8b HID: sfh: fix address space confusion 
The new driver uses a phys_addr_t to store a DMA address,
which does not work when the two are different size:

drivers/hid/amd-sfh-hid/amd_sfh_client.c:157:11: error: incompatible pointer types passing 'phys_addr_t *' (aka 'unsigned int *') to parameter of type 'dma_addr_t *' (aka 'unsigned long long *') [-Werror,-Wincompatible-pointer-types]
                                                                  &cl_data->sensor_phys_addr[i],
                                                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/dma-mapping.h:393:15: note: passing argument to parameter 'dma_handle' here
                dma_addr_t *dma_handle, gfp_t gfp)
                            ^

Change both the type and the variable name to dma_addr for consistency.

Fixes: 4b2c53d93a ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2021-01-04 16:08:12 +01:00
Colin Ian King
6e6eae04f5 SFH: fix error return check for -ERESTARTSYS 
Currently the check for the error return code -ERESTARTSYS is dead code
and never executed because a previous check for ret < 0 is catching this
and returning -ETIMEDOUT instead.  Fix this by checking for -ERESTARTSYS
before the more generic negative error code.

Addresses-Coverity: ("Logically dead code")
Fixes: 4b2c53d93a ("SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH)")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2020-11-12 16:25:40 +01:00
Sandeep Singh
4b393f0f76 AMD_SFH: Fix for incorrect Sensor index 
It appears like the accelerometer/magnetometer and gyroscope indices were
interchanged in the patch series which got into for-5.11/amd-sfh-hid until
Mandoli/Richard reported to us.  Ideally sensor indices should be 0,1,2 for the
accelerometer, Gyroscope, Magnetometer respectively, but this interchanged
possibly could be because i was using a test MP2 firmware on my machine.

This patch fixes the earlier commit with the right sensor indices and also
removing unused structures _hid_report_descriptor, _hid_device_descriptor as
reported by Richard.

Fixes: 4f567b9f81 ("SFH: PCIe driver to add support of AMD sensor fusion hub 4f567b9f8141")
Reported-by: Mandoli <lipheng@hanmail.net>
Reported-by: Richard Neumann <mail@richard-neumann.de>
Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2020-10-29 16:02:29 +01:00
Sandeep Singh
1434f9fc0e SFH: Create HID report to Enable support of AMD sensor fusion Hub (SFH) 
Communication between HID devices and HID core is mostly done
via HID reports. HID reports are formed based on the data received
from the PCI layer into the HID report descriptors.

Co-developed-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2020-10-22 12:05:03 +02:00
Sandeep Singh
4b2c53d93a SFH:Transport Driver to add support of AMD Sensor Fusion Hub (SFH) 
To support AMD Sensor Fusion Hub (SFH) via the HID client's we need to
register the client with the HID framework. Here we mostly address on
how to register the client with the framework and define the interfaces
for communication.

Co-developed-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2020-10-22 12:05:03 +02:00
Sandeep Singh
4f567b9f81 SFH: PCIe driver to add support of AMD sensor fusion hub 
AMD SFH (Sensor Fusion Hub) is a solution running on MP2
(which is ARM core connected to x86 for processing sensor data).
AMD SFH uses HID over PCI bus to form the HID descriptors and
talks to HID clients like the monitor-sensor/iio-proxy. MP2 which
is exposed as a PCI device to the x86, uses mailboxes to talk to
MP2 firmware to send/receive commands.

Co-developed-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Nehal Shah <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Sandeep Singh <sandeep.singh@amd.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
 2020-10-22 12:05:02 +02:00