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2024-03-26rpmsg: core: Make rpmsg_class constantRicardo B. Marliere1-7/+9
Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the rpmsg_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Link: https://lore.kernel.org/r/20240305-class_cleanup-remoteproc-v1-1-19373374e003@marliere.net Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2024-02-05rpmsg: core: Make rpmsg_bus constRicardo B. Marliere1-1/+1
Now that the driver core can properly handle constant struct bus_type, move the rpmsg_bus variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20240204-bus_cleanup-rpmsg-v1-1-1703508c23b7@marliere.net Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2023-10-23rpmsg: core: Replace deprecated strncpy with strscpyJustin Stitt1-1/+1
strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. We expect chinfo.name to be NUL-terminated based on its usage with strncmp(): rpmsg_core.c: 389: if (strncmp(chinfo->name, rpdev->id.name, RPMSG_NAME_SIZE)) Moreover, NUL-padding is not required as chinfo has stack default initialized all fields to zero: rpmsg_core.c: 539: struct rpmsg_channel_info chinfo = {}; Considering the above, a suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer without unnecessarily NUL-padding. Also, favor the more idiomatic strscpy() usage of: (dest, src, sizeof(dest)). Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt <justinstitt@google.com> Link: https://lore.kernel.org/r/20231020-strncpy-drivers-rpmsg-rpmsg_core-c-v1-1-a86b7930c1cf@google.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2023-07-15rpmsg: core: Add signal API supportDeepak Kumar Singh1-0/+21
Some transports like Glink support the state notifications between clients using flow control signals similar to serial protocol signals. Local glink client drivers can send and receive flow control status to glink clients running on remote processors. Add APIs to support sending and receiving of flow control status by rpmsg clients. Signed-off-by: Deepak Kumar Singh <quic_deesin@quicinc.com> Signed-off-by: Sarannya S <quic_sarannya@quicinc.com> Acked-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Link: https://lore.kernel.org/r/1688679698-31274-2-git-send-email-quic_sarannya@quicinc.com Signed-off-by: Bjorn Andersson <andersson@kernel.org>
2023-03-17driver core: class: remove module * from class_create()Greg Kroah-Hartman1-1/+1
The module pointer in class_create() never actually did anything, and it shouldn't have been requred to be set as a parameter even if it did something. So just remove it and fix up all callers of the function in the kernel tree at the same time. Cc: "Rafael J. Wysocki" <rafael@kernel.org> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Link: https://lore.kernel.org/r/20230313181843.1207845-4-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-27driver core: make struct bus_type.uevent() take a const *Greg Kroah-Hartman1-2/+2
The uevent() callback in struct bus_type should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Acked-by: Rafael J. Wysocki <rafael@kernel.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230111113018.459199-16-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-06-24rpmsg: Strcpy is not safe, use strscpy_pad() insteadSaud Farooqui1-1/+1
Replace strcpy() with strscpy_pad() for copying the rpmsg device name in rpmsg_register_device_override(). Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Saud Farooqui <farooqui_saud@hotmail.com> Link: https://lore.kernel.org/r/PA4P189MB14210AA95DCA3715AFA7F4A68BB59@PA4P189MB1421.EURP189.PROD.OUTLOOK.COM Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2022-06-24rpmsg: Fix possible refcount leak in rpmsg_register_device_override()Hangyu Hua1-0/+1
rpmsg_register_device_override need to call put_device to free vch when driver_set_override fails. Fix this by adding a put_device() to the error path. Fixes: bb17d110cbf2 ("rpmsg: Fix calling device_lock() on non-initialized device") Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Hangyu Hua <hbh25y@gmail.com> Link: https://lore.kernel.org/r/20220624024120.11576-1-hbh25y@gmail.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2022-05-06rpmsg: use local 'dev' variableKrzysztof Kozlowski1-3/+3
'&rpdev->dev' is already cached as local variable, so use it to simplify the code. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220429195946.1061725-3-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-06rpmsg: Fix calling device_lock() on non-initialized deviceKrzysztof Kozlowski1-3/+30
driver_set_override() helper uses device_lock() so it should not be called before rpmsg_register_device() (which calls device_register()). Effect can be seen with CONFIG_DEBUG_MUTEXES: DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 3 PID: 57 at kernel/locking/mutex.c:582 __mutex_lock+0x1ec/0x430 ... Call trace: __mutex_lock+0x1ec/0x430 mutex_lock_nested+0x44/0x50 driver_set_override+0x124/0x150 qcom_glink_native_probe+0x30c/0x3b0 glink_rpm_probe+0x274/0x350 platform_probe+0x6c/0xe0 really_probe+0x17c/0x3d0 __driver_probe_device+0x114/0x190 driver_probe_device+0x3c/0xf0 ... Refactor the rpmsg_register_device() function to use two-step device registering (initialization + add) and call driver_set_override() in proper moment. This moves the code around, so while at it also NULL-ify the rpdev->driver_override in error path to be sure it won't be kfree() second time. Fixes: 42cd402b8fd4 ("rpmsg: Fix kfree() of static memory on setting driver_override") Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/20220429195946.1061725-2-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-22rpmsg: Constify local variable in field store macroKrzysztof Kozlowski1-1/+2
Memory pointed by variable 'old' in field store macro is not modified, so it can be made a pointer to const. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20220419113435.246203-12-krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-13rpmsg: Create the rpmsg class in core instead of in rpmsg charArnaud Pouliquen1-2/+13
Migrate the creation of the rpmsg class from the rpmsg_char to the core that the class is usable by the rpmsg_char and the future rpmsg_ctrl module. Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220124102524.295783-3-arnaud.pouliquen@foss.st.com
2021-12-08rpmsg: core: Clean up resources on announce_create failure.Arnaud Pouliquen1-4/+16
During the rpmsg_dev_probe, if rpdev->ops->announce_create returns an error, the rpmsg device and default endpoint should be freed before exiting the function. Fixes: 5e619b48677c ("rpmsg: Split rpmsg core and virtio backend") Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20211206190758.10004-1-arnaud.pouliquen@foss.st.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2021-11-18rpmsg: Fix documentation return formattingArnaud Pouliquen1-12/+12
kernel documentation specification: "The return value, if any, should be described in a dedicated section named Return." Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Link: https://lore.kernel.org/r/20211108140126.3530-1-arnaud.pouliquen@foss.st.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2021-10-21rpmsg: core: add API to get MTUArnaud Pouliquen1-0/+21
Return the rpmsg buffer MTU for sending message, so rpmsg users can split a long message in several sub rpmsg buffers. Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Acked-by: Suman Anna <s-anna@ti.com> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com> Link: https://lore.kernel.org/r/20211015094701.5732-2-arnaud.pouliquen@foss.st.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21bus: Make remove callback return voidUwe Kleine-König1-5/+2
The driver core ignores the return value of this callback because there is only little it can do when a device disappears. This is the final bit of a long lasting cleanup quest where several buses were converted to also return void from their remove callback. Additionally some resource leaks were fixed that were caused by drivers returning an error code in the expectation that the driver won't go away. With struct bus_type::remove returning void it's prevented that newly implemented buses return an ignored error code and so don't anticipate wrong expectations for driver authors. Reviewed-by: Tom Rix <trix@redhat.com> (For fpga) Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Cornelia Huck <cohuck@redhat.com> (For drivers/s390 and drivers/vfio) Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> (For ARM, Amba and related parts) Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Chen-Yu Tsai <wens@csie.org> (for sunxi-rsb) Acked-by: Pali Rohár <pali@kernel.org> Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> (for media) Acked-by: Hans de Goede <hdegoede@redhat.com> (For drivers/platform) Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-By: Vinod Koul <vkoul@kernel.org> Acked-by: Juergen Gross <jgross@suse.com> (For xen) Acked-by: Lee Jones <lee.jones@linaro.org> (For mfd) Acked-by: Johannes Thumshirn <jth@kernel.org> (For mcb) Acked-by: Johan Hovold <johan@kernel.org> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> (For slimbus) Acked-by: Kirti Wankhede <kwankhede@nvidia.com> (For vfio) Acked-by: Maximilian Luz <luzmaximilian@gmail.com> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> (For ulpi and typec) Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> (For ipack) Acked-by: Geoff Levand <geoff@infradead.org> (For ps3) Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com> (For thunderbolt) Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> (For intel_th) Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> (For pcmcia) Acked-by: Rafael J. Wysocki <rafael@kernel.org> (For ACPI) Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> (rpmsg and apr) Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> (For intel-ish-hid) Acked-by: Dan Williams <dan.j.williams@intel.com> (For CXL, DAX, and NVDIMM) Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> (For isa) Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (For firewire) Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> (For hid) Acked-by: Thorsten Scherer <t.scherer@eckelmann.de> (For siox) Acked-by: Sven Van Asbroeck <TheSven73@gmail.com> (For anybuss) Acked-by: Ulf Hansson <ulf.hansson@linaro.org> (For MMC) Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Finn Thain <fthain@linux-m68k.org> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20210713193522.1770306-6-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-18rpmsg: core: Add driver_data for rpmsg_device_idStephan Gerhold1-1/+3
Most device_id structs provide a driver_data field that can be used by drivers to associate data more easily for a particular device ID. Add the same for the rpmsg_device_id. Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-11-24rpmsg: core: Add channel creation internal APIArnaud Pouliquen1-0/+44
Add the channel creation API as a first step to be able to define the name service announcement as a rpmsg driver independent from the RPMsg virtio bus. Tested-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com> Link: https://lore.kernel.org/r/20201120214245.172963-6-mathieu.poirier@linaro.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-09-15rpmsg: Guard against null endpoint ops in destroyChris Lew1-1/+1
In RPMSG GLINK the chrdev device will allocate an ept as part of the rpdev creation. This device will not register endpoint ops even though it has an allocated ept. Protect against the case where the device is being destroyed. Signed-off-by: Chris Lew <clew@codeaurora.org> Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org> Signed-off-by: Deepak Kumar Singh <deesin@codeaurora.org> Link: https://lore.kernel.org/r/1593017121-7953-3-git-send-email-deesin@codeaurora.org Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2020-04-17rpmsg: fix a comment typo for rpmsg_device_match()Wang Wenhu1-1/+1
Should be 'a' rather than 'an'. Signed-off-by: WANG Wenhu <wenhu.wang@vivo.com> Link: https://lore.kernel.org/r/20200313165049.62907-1-wenhu.wang@vivo.com Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2019-08-27rpmsg: core: fix commentsPierre-Louis Bossart1-4/+4
Minor typos, grammar and copy/paste issues. Fix for consistency. No functional or semantic change. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2019-05-22rpmsg: core: Make remove handler for rpmsg driver optional.Pi-Hsun Shih1-1/+2
Most other bus (for example, SPI, i2c) have the remove handler for driver optional. Make remove handler for rpmsg driver optional too. Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-07-31rpmsg: core: add support to power domains for devicesSrinivas Kandagatla1-0/+7
Some of the rpmsg devices need to switch on power domains to communicate with remote processor. For example on Qualcomm DB820c platform LPASS power domain needs to switched on for any kind of audio services. This patch adds the missing power domain support in rpmsg core. Without this patch attempting to play audio via QDSP on DB820c would reboot the system. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-06-04rpmsg: Switch to SPDX license identifierSuman Anna1-9/+1
Use the appropriate SPDX license identifier in the rpmsg core source files and drop the previous boilerplate license text. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-04-26rpmsg: Add driver_override device attribute for rpmsg_deviceAnup Patel1-0/+39
This patch adds "driver_override" device attribute for rpmsg_device which will allow users to explicitly specify the rpmsg_driver to be used via sysfs entry. The "driver_override" device attribute implemented here is very similar to "driver_override" implemented for platform, pci, and amba bus types. One important use-case of "driver_override" device attribute is to force use of rpmsg_chrdev driver for certain rpmsg_device instances. Signed-off-by: Anup Patel <anup@brainfault.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2018-03-28rpmsg: Only invoke announce_create for rpdev with endpointsBjorn Andersson1-1/+1
For special rpmsg devices without a primary endpoint there is nothing to announce so don't call the backend announce create function if we didn't create an endpoint. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-11-28the rest of drivers/*: annotate ->poll() instancesAl Viro1-1/+1
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-07-07Merge tag 'rpmsg-v4.13' of git://github.com/andersson/remoteprocLinus Torvalds1-8/+10
Pull rpmsg updates from Bjorn Andersson: "This introduces the Qualcomm GLINK protocol driver and DeviceTree-based modalias support, as well as a number of smaller fixes" * tag 'rpmsg-v4.13' of git://github.com/andersson/remoteproc: rpmsg: Make modalias work for DeviceTree based devices rpmsg: Drop VIRTUALIZATION dependency from RPMSG_VIRTIO rpmsg: Don't overwrite release op of rpdev rpmsg: virtio_rpmsg_bus: cleanup multiple assignment to ops rpmsg: virtio_rpmsg_bus: fix nameservice address rpmsg: cleanup incorrect function in dev_err message rpmsg: virtio_rpmsg_bus: fix announce for devices without endpoint rpmsg: Introduce Qualcomm RPM glink driver soc: qcom: Add device tree binding for GLINK RPM rpmsg: Release rpmsg devices in backends
2017-06-29rpmsg: Make modalias work for DeviceTree based devicesBjorn Andersson1-0/+10
When rpmsg devices are expected to be matched based on their compatible the modalias should reflect this, so that module autoloading has a chance to match and load the appropriate module. Tested-by: Rob Clark <robdclark@gmail.com> Reported-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-27rpmsg: Don't overwrite release op of rpdevBjorn Andersson1-8/+0
b0b03b811963 ("rpmsg: Release rpmsg devices in backends") attempted to correct the ownership of freeing rpmsg device memory. But the patch is not complete, in that the rpmsg core will overwrite the release op as the device is being registered. Fixes: b0b03b811963 ("rpmsg: Release rpmsg devices in backends") Reported-by: Henri Roosen <henri.roosen@ginzinger.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-06-09rpmsg: use dev_groups and not dev_attrs for bus_typeGreg Kroah-Hartman1-10/+13
The dev_attrs field has long been "depreciated" and is finally being removed, so move the driver to use the "correct" dev_groups field instead for struct bus_type. Cc: Ohad Ben-Cohen <ohad@wizery.com> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: <linux-remoteproc@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-13rpmsg: rpmsg_create_ept() returns NULL on errorBjorn Andersson1-1/+1
The parameter validation incorrectly returned an ERR_PTR(), which is not handled by the callers to rpmsg_create_ept(), per the definition NULL should be returned. Fixes: 93e9324431c9 ("rpmsg: Handle invalid parameters in public API") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2017-01-18rpmsg: Introduce "poll" to endpoint opsBjorn Andersson1-0/+20
This allows rpmsg backends to implement polling of the outgoing buffer, which provides poll support to user space when using the rpmsg character device. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-12-30rpmsg: virtio_rpmsg_bus: fix channel creationLoic Pallardy1-2/+2
Since commit 4dffed5b3ac796b ("rpmsg: Name rpmsg devices based on channel id"), it is no more possible for a firmware to register twice a service (on different endpoints). rpmsg_register_device function is failing when calling device_add for the second time as second device has the same name as first one already register. It is because name is based only on service name and so is not more unique. Previously name was unique thanks to the use of rpmsg_dev_index. This patch adds destination and source endpoint numbers device name to create an unique identifier. Fixes: 4dffed5b3ac7 ("rpmsg: Name rpmsg devices based on channel id") Acked-by: Peter Griffin <peter.griffin@linaro.org> Signed-off-by: Loic Pallardy <loic.pallardy@st.com> [bjorn: flipped name and address in device name] Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-11-01rpmsg: Handle invalid parameters in public APIBjorn Andersson1-2/+37
There are two cases of possible uninitialized pointer usage in the API, either the parameters themselves are invalid or we're trying to jump to functions not required to be implemented by all backends. Suggested-by: Loic Pallardy <loic.pallardy@st.com> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-11-01rpmsg: Support drivers without primary endpointBjorn Andersson1-14/+18
Some types of rpmsg drivers does not have a primary endpoint to tie their existence upon, but wishes to create and destroy endpoints dynamically, e.g. based on user interactions. Allow rpmsg drivers to omit a driver callback to signal this case and make the probe path not create a primary endpoint in this case. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-11-01rpmsg: Introduce a driver override mechanismBjorn Andersson1-0/+3
Similar to other subsystems it's useful to provide a mechanism to force a specific driver match on a device, so introduce this. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-09-09rpmsg: Hide rpmsg indirection tablesBjorn Andersson1-0/+3
Move the device and endpoint indirection tables to the rpmsg internal header file, to hide them from the public API. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-09-09rpmsg: Split rpmsg core and virtio backendBjorn Andersson1-0/+231
Extract the generic rpmsg core functionality from the virtio rpmsg implementation, splitting the implementation in a rpmsg core and a virtio backend. Based on initial work by Sricharan R <sricharan@codeaurora.org> Cc: Sricharan R <sricharan@codeaurora.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-09-09rpmsg: Move helper for finding rpmsg devices to coreBjorn Andersson1-0/+33
Extract and move the helper function for finding rpmsg child devices to the core. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-09-09rpmsg: Move endpoint related interface to rpmsg coreBjorn Andersson1-0/+160
Move the rpmsg_send() and rpmsg_destroy_ept() interface to the rpmsg core, so that we eventually can hide the rpmsg_endpoint ops from the public API. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
2016-09-09rpmsg: Move rpmsg_device API to new fileBjorn Andersson1-0/+71
Extract the now indirect rpmsg_create_ept() interface to a separate file and start building up a rpmsg core. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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