linux-stable.git/drivers/rpmsg/Kconfig, branch linux-5.4.y

rpmsg: Switch to SPDX license identifier

2018-06-04T00:37:11+00:00

Use the appropriate SPDX license identifier in the rpmsg core
source files and drop the previous boilerplate license text.

Signed-off-by: Suman Anna 
Signed-off-by: Bjorn Andersson

rpmsg: qcom_smd: Access APCS through mailbox framework

2018-04-26T00:09:57+00:00

Attempt to acquire the APCS IPC through the mailbox framework and fall
back to the old syscon based approach, to allow us to move away from
using the syscon.

Reviewed-by: Arun Kumar Neelakantam 
Signed-off-by: Bjorn Andersson

rpmsg: Allow RPMSG_VIRTIO to be enabled via menuconfig or defconfig

2017-10-26T04:51:05+00:00

Currently, RPMSG_VIRTIO can only be enabled if some other kconfig
option selects it. This does not allow it to be enabled for
virtualized systems where Virtio RPMSG is available over Virtio
MMIO or PCI transport.

This patch updates RPMSG_VIRTIO kconfig option so that we can
enable the VirtIO RPMSG driver via menuconfig or defconfig. The
patch also removes "select RPMSG_VIRTIO" from various remoteproc
kconfig options because it is now user selectable.

Signed-off-by: Anup Patel 
Signed-off-by: Bjorn Andersson

rpmsg: glink: Introduce glink smem based transport

2017-08-30T03:33:57+00:00

The glink protocol supports different types of transports (shared
memory). With the core protocol remaining the same, the way the
transport's memory is probed and accessed is different. So add support
for glink's smem based transports.

Adding a new smem transport register function and the fifo accessors for
the same.

Acked-by: Arun Kumar Neelakantam 
Signed-off-by: Sricharan R 
Signed-off-by: Bjorn Andersson

rpmsg: glink: Move the common glink protocol implementation to glink_native.c

2017-08-29T21:29:33+00:00

Move the common part of glink core protocol implementation to
glink_native.c that can be shared with the smem based glink
transport in the later patches.

Acked-by: Arun Kumar Neelakantam 
Signed-off-by: Sricharan R 
Signed-off-by: Bjorn Andersson

rpmsg: Drop VIRTUALIZATION dependency from RPMSG_VIRTIO

2017-06-27T23:00:48+00:00

A dependency to VIRTUALIZATION has been added to RPMSG_VIRTIO (back
when it was named RPMSG) in v3.10 kernel in commit 397944df3290
("rpmsg: fix kconfig dependencies for VIRTIO") to resolve Kconfig
warnings due to the inclusion of the virtio configuration file from
the ARM's KVM config file. The KVM config was fixed properly in the
subsequent release in commit 8bd4ffd6b3a9 ("ARM: kvm: don't include
drivers/virtio/Kconfig"). So, drop this unneeded VIRTUALIZATION
dependency from RPMSG_VIRTIO.

Signed-off-by: Suman Anna 
Signed-off-by: Bjorn Andersson

rpmsg: Introduce Qualcomm RPM glink driver

2017-05-31T03:57:23+00:00

This introduces a basic driver for communicating over "native glink"
with the RPM found in Qualcomm platforms.

Signed-off-by: Bjorn Andersson

soc: qcom: smd: Remove standalone driver

2017-03-29T00:58:07+00:00

Remove the standalone SMD implementation as we have transitioned the
client drivers to use the RPMSG based one.

Also remove all dependencies on QCOM_SMD from Kconfig files, in order to
keep them selectable in the absence of the removed symbol.

Acked-by: Andy Gross 
Signed-off-by: Bjorn Andersson 
Signed-off-by: David S. Miller

rpmsg: char: add CONFIG_NET dependency

2017-01-19T07:08:05+00:00

Without CONFIG_NET, we get a build failure for the new driver:

ERROR: "skb_queue_tail" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "skb_put" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "__alloc_skb" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "kfree_skb" [drivers/rpmsg/rpmsg_char.ko] undefined!
ERROR: "skb_dequeue" [drivers/rpmsg/rpmsg_char.ko] undefined!

This adds a dependency so we don't try to build the broken configuration.

Fixes: c0cdc19f84a4 ("rpmsg: Driver for user space endpoint interface")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Bjorn Andersson

rpmsg: Driver for user space endpoint interface

2017-01-18T18:43:15+00:00

This driver allows rpmsg instances to expose access to rpmsg endpoints
to user space processes. It provides a control interface, allowing
userspace to export endpoints and an endpoint interface for each exposed
endpoint.

The implementation is based on prior art by Texas Instrument, Google,
PetaLogix and was derived from a FreeRTOS performance statistics driver
written by Michal Simek.

The control interface provides a "create endpoint" ioctl, which is fed a
name, source and destination address. The three values are used to
create the endpoint, in a backend-specific way, and a rpmsg endpoint
device is created - with the three parameters are available in sysfs for
udev usage.

E.g. to create an endpoint device for one of the Qualcomm SMD channel
related to DIAG one would issue:

  struct rpmsg_endpoint_info info = { "DIAG_CNTL", 0, 0 };
  int fd = open("/dev/rpmsg_ctrl0", O_RDWR);
  ioctl(fd, RPMSG_CREATE_EPT_IOCTL, &info);

Each created endpoint device shows up as an individual character device
in /dev, allowing permission to be controlled on a per-endpoint basis.
The rpmsg endpoint will be created and destroyed following the opening
and closing of the endpoint device, allowing rpmsg backends to open and
close the physical channel, if supported by the wire protocol.

Cc: Marek Novak 
Cc: Matteo Sartori 
Cc: Michal Simek 
Signed-off-by: Bjorn Andersson