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The reg property represents the address and size on the bus that a
device lives, but for APR the parent is a rpmsg bus, which does not have
numerical addresses. Simply defining #address/#size-cells to 1 and 0,
respectively, to silence the compiler is not an appropriate solution.
Replace the use of "reg" with an APR specific property.
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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APR communication with DSP is not atomic in nature.
Its request-response type. Trying to pretend that these are atomic
and invoking apr client callbacks directly under atomic/irq context has
endless issues with soundcard. It makes more sense to convert these
to nonatomic calls. This also coverts all the dais to be nonatomic.
All the callbacks are now invoked as part of rx work queue.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
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Pull ARM SoC driver updates from Arnd Bergmann:
"The most noteworthy SoC driver changes this time include:
- The TEE subsystem gains an in-kernel interface to access the TEE
from device drivers.
- The reset controller subsystem gains a driver for the Qualcomm
Snapdragon 845 Power Domain Controller.
- The Xilinx Zynq platform now has a firmware interface for its
platform management unit. This contains a firmware "ioctl"
interface that was a little controversial at first, but the version
we merged solved that by not exposing arbitrary firmware calls to
user space.
- The Amlogic Meson platform gains a "canvas" driver that is used for
video processing and shared between different high-level drivers.
The rest is more of the usual, mostly related to SoC specific power
management support and core drivers in drivers/soc:
- Several Renesas SoCs (RZ/G1N, RZ/G2M, R-Car V3M, RZ/A2M) gain new
features related to power and reset control.
- The Mediatek mt8183 and mt6765 SoC platforms gain support for their
respective power management chips.
- A new driver for NXP i.MX8, which need a firmware interface for
power management.
- The SCPI firmware interface now contains support estimating power
usage of performance states
- The NVIDIA Tegra "pmc" driver gains a few new features, in
particular a pinctrl interface for configuring the pads.
- Lots of small changes for Qualcomm, in particular the "smem" device
driver.
- Some cleanups for the TI OMAP series related to their sysc
controller.
Additional cleanups and bugfixes in SoC specific drivers include the
Meson, Keystone, NXP, AT91, Sunxi, Actions, and Tegra platforms"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (129 commits)
firmware: tegra: bpmp: Implement suspend/resume support
drivers: clk: Add ZynqMP clock driver
dt-bindings: clock: Add bindings for ZynqMP clock driver
firmware: xilinx: Add zynqmp IOCTL API for device control
Documentation: xilinx: Add documentation for eemi APIs
MAINTAINERS: imx: include drivers/firmware/imx path
firmware: imx: add misc svc support
firmware: imx: add SCU firmware driver support
reset: Fix potential use-after-free in __of_reset_control_get()
dt-bindings: arm: fsl: add scu binding doc
soc: fsl: qbman: add interrupt coalesce changing APIs
soc: fsl: bman_portals: defer probe after bman's probe
soc: fsl: qbman: Use last response to determine valid bit
soc: fsl: qbman: Add 64 bit DMA addressing requirement to QBMan
soc: fsl: qbman: replace CPU 0 with any online CPU in hotplug handlers
soc: fsl: qbman: Check if CPU is offline when initializing portals
reset: qcom: PDC Global (Power Domain Controller) reset controller
dt-bindings: reset: Add PDC Global binding for SDM845 SoCs
reset: Grammar s/more then once/more than once/
bus: ti-sysc: Just use SET_NOIRQ_SYSTEM_SLEEP_PM_OPS
...
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In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.
Cc: Li Yang <leoyang.li@nxp.com>
Cc: David Brown <david.brown@linaro.org>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-soc@vger.kernel.org
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Qiang Zhao <qiang.zhao@nxp.com>
Acked-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
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'adev->name' is used as a NUL-terminated string, but using strncpy() with the
length equal to the buffer size may result in lack of the termination:
In function 'apr_add_device',
inlined from 'of_register_apr_devices' at drivers//soc/qcom/apr.c:264:7,
inlined from 'apr_probe' at drivers//soc/qcom/apr.c:290:2:
drivers//soc/qcom/apr.c:222:3: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation]
strncpy(adev->name, np->name, APR_NAME_SIZE);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This changes it to use the safer strscpy() instead.
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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Trivial fix to spelling mistake in dev_err message text
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
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Removed invalid msg_type check.
This also fixes below static checker warning:
apr.c:95:35: warning: comparison is always true due to limited range of
data type [-Wtype-limits]
warn: always true condition '(msg_type != 69864) => (0-u16max != 69864)'
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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This patch adds support to APR bus (Asynchronous Packet Router) driver.
APR driver is made as a bus driver so that the apr devices can added removed
more dynamically depending on the state of the services on the dsp.
APR is used for communication between application processor and QDSP to
use services on QDSP like Audio and others.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-and-tested-by: Rohit kumar <rohitkr@codeaurora.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Bjorn Andersson
Srinivas Kandagatla
Linus Torvalds
Rob Herring
Niklas Cassel
Colin Ian King