media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As described in
the datasheet NPCM750D_DS_Rev_1.0, the VCD can capture frames from
digital video input and compare two frames in memory, and then the ECE
can compress the frame data into HEXTILE format. This driver implements
V4L2 interfaces and provides user controls to support KVM feature, also
tested with VNC Viewer ver.6.22.826 and openbmc/obmc-ikvm.

OpenBMC-Staging-Count: 1
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 46c15a4ff1f4fe078c5b250fb2570020211eab38)
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This com

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This commit adds a driver to control the XDMA engine and adds functions
to initialize the hardware and memory and start DMA operations.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-3-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-2-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will need two functions for applying pwm changes:

int pwm_apply_might_sleep(struct pwm *, struct pwm_state *);
int pwm_apply_atomic(struct pwm *, struct pwm_state *);

This commit just deals with renaming pwm_apply_state(), a following
commit will introduce the pwm_apply_atomic() function.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Stable-dep-of: 974afccd3794 ("leds: pwm: Disable PWM when going to suspend")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one device as the frontend device which
can be "linked" against one or multiple backend devices. All the IIO and
userspace interface is expected to be registers/managed by the frontend
device which will callback into the backends when needed (to get/set
some configuration that it does not directly control).

The basic framework interface is pretty simple:
- Backends should register themselves with @devm_iio_backend_register()
- Frontend devices should get backends with @devm_iio_backend_get()

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240210-iio-backend-v11-5-f5242a5fb42a@analog.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stable-dep-of: cf1c833f89e7 ("iio: adc: adi-axi-adc: only error out in major version mismatch")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As described in
the datasheet NPCM750D_DS_Rev_1.0, the VCD can capture frames from
digital video input and compare two frames in memory, and then the ECE
can compress the frame data into HEXTILE format. This driver implements
V4L2 interfaces and provides user controls to support KVM feature, also
tested with VNC Viewer ver.6.22.826 and openbmc/obmc-ikvm.

OpenBMC-Staging-Count: 1
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 46c15a4ff1f4fe078c5b250fb2570020211eab38)
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This com

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This commit adds a driver to control the XDMA engine and adds functions
to initialize the hardware and memory and start DMA operations.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-3-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-2-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As described in
the datasheet NPCM750D_DS_Rev_1.0, the VCD can capture frames from
digital video input and compare two frames in memory, and then the ECE
can compress the frame data into HEXTILE format. This driver implements
V4L2 interfaces and provides user controls to support KVM feature, also
tested with VNC Viewer ver.6.22.826 and openbmc/obmc-ikvm.

OpenBMC-Staging-Count: 1
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 46c15a4ff1f4fe078c5b250fb2570020211eab38)
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This com

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This commit adds a driver to control the XDMA engine and adds functions
to initialize the hardware and memory and start DMA operations.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-3-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-2-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will need two functions for applying pwm changes:

int pwm_apply_might_sleep(struct pwm *, struct pwm_state *);
int pwm_apply_atomic(struct pwm *, struct pwm_state *);

This commit just deals with renaming pwm_apply_state(), a following
commit will introduce the pwm_apply_atomic() function.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Stable-dep-of: 974afccd3794 ("leds: pwm: Disable PWM when going to suspend")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one device as the frontend device which
can be "linked" against one or multiple backend devices. All the IIO and
userspace interface is expected to be registers/managed by the frontend
device which will callback into the backends when needed (to get/set
some configuration that it does not directly control).

The basic framework interface is pretty simple:
- Backends should register themselves with @devm_iio_backend_register()
- Frontend devices should get backends with @devm_iio_backend_get()

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240210-iio-backend-v11-5-f5242a5fb42a@analog.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stable-dep-of: cf1c833f89e7 ("iio: adc: adi-axi-adc: only error out in major version mismatch")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As described in
the datasheet NPCM750D_DS_Rev_1.0, the VCD can capture frames from
digital video input and compare two frames in memory, and then the ECE
can compress the frame data into HEXTILE format. This driver implements
V4L2 interfaces and provides user controls to support KVM feature, also
tested with VNC Viewer ver.6.22.826 and openbmc/obmc-ikvm.

OpenBMC-Staging-Count: 1
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 46c15a4ff1f4fe078c5b250fb2570020211eab38)
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This com

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This commit adds a driver to control the XDMA engine and adds functions
to initialize the hardware and memory and start DMA operations.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-3-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-2-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will need two functions for applying pwm changes:

int pwm_apply_might_sleep(struct pwm *, struct pwm_state *);
int pwm_apply_atomic(struct pwm *, struct pwm_state *);

This commit just deals with renaming pwm_apply_state(), a following
commit will introduce the pwm_apply_atomic() function.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Stable-dep-of: 974afccd3794 ("leds: pwm: Disable PWM when going to suspend")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one device as the frontend device which
can be "linked" against one or multiple backend devices. All the IIO and
userspace interface is expected to be registers/managed by the frontend
device which will callback into the backends when needed (to get/set
some configuration that it does not directly control).

The basic framework interface is pretty simple:
- Backends should register themselves with @devm_iio_backend_register()
- Frontend devices should get backends with @devm_iio_backend_get()

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240210-iio-backend-v11-5-f5242a5fb42a@analog.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stable-dep-of: cf1c833f89e7 ("iio: adc: adi-axi-adc: only error out in major version mismatch")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As described in
the datasheet NPCM750D_DS_Rev_1.0, the VCD can capture frames from
digital video input and compare two frames in memory, and then the ECE
can compress the frame data into HEXTILE format. This driver implements
V4L2 interfaces and provides user controls to support KVM feature, also
tested with VNC Viewer ver.6.22.826 and openbmc/obmc-ikvm.

OpenBMC-Staging-Count: 1
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 46c15a4ff1f4fe078c5b250fb2570020211eab38)
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This com

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This commit adds a driver to control the XDMA engine and adds functions
to initialize the hardware and memory and start DMA operations.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-3-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew

dt-bindings: soc: Add Aspeed XDMA Engine

Document the bindings for the Aspeed AST25XX and AST26XX XDMA engine.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-2-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

show more ...

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will

pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()

[ Upstream commit c748a6d77c06a78651030e17da6beb278a1c9470 ]

In order to introduce a pwm api which can be used from atomic context,
we will need two functions for applying pwm changes:

int pwm_apply_might_sleep(struct pwm *, struct pwm_state *);
int pwm_apply_atomic(struct pwm *, struct pwm_state *);

This commit just deals with renaming pwm_apply_state(), a following
commit will introduce the pwm_apply_atomic() function.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> # for input
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Stable-dep-of: 974afccd3794 ("leds: pwm: Disable PWM when going to suspend")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one

iio: add the IIO backend framework

[ Upstream commit 1a97905d3e48ebe79a06d16143fbfa427c56ce5f ]

This is a Framework to handle complex IIO aggregate devices.

The typical architecture is to have one device as the frontend device which
can be "linked" against one or multiple backend devices. All the IIO and
userspace interface is expected to be registers/managed by the frontend
device which will callback into the backends when needed (to get/set
some configuration that it does not directly control).

The basic framework interface is pretty simple:
- Backends should register themselves with @devm_iio_backend_register()
- Frontend devices should get backends with @devm_iio_backend_get()

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20240210-iio-backend-v11-5-f5242a5fb42a@analog.com
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Stable-dep-of: cf1c833f89e7 ("iio: adc: adi-axi-adc: only error out in major version mismatch")
Signed-off-by: Sasha Levin <sashal@kernel.org>

show more ...

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As

media: nuvoton: Add driver for NPCM video capture and encoding engine

Add driver for Video Capture/Differentiation Engine (VCD) and Encoding
Compression Engine (ECE) present on Nuvoton NPCM SoCs. As described in
the datasheet NPCM750D_DS_Rev_1.0, the VCD can capture frames from
digital video input and compare two frames in memory, and then the ECE
can compress the frame data into HEXTILE format. This driver implements
V4L2 interfaces and provides user controls to support KVM feature, also
tested with VNC Viewer ver.6.22.826 and openbmc/obmc-ikvm.

OpenBMC-Staging-Count: 1
Signed-off-by: Marvin Lin <milkfafa@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
(cherry picked from commit 46c15a4ff1f4fe078c5b250fb2570020211eab38)
Signed-off-by: Joel Stanley <joel@jms.id.au>

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soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This com

soc: aspeed: Add XDMA Engine Driver

The XDMA engine embedded in the AST2500 and AST2600 SOCs performs PCI
DMA operations between the SOC (acting as a BMC) and a host processor
in a server.

This commit adds a driver to control the XDMA engine and adds functions
to initialize the hardware and memory and start DMA operations.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@aj.id.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/1588697905-23444-3-git-send-email-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>

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