greybus-dev

greybus-dev@lists.linaro.org

13 participants
774 discussions

[PATCH 1/3] staging: greybus: raw: make raw_class constant

by Greg Kroah-Hartman

Now that the driver core allows for struct class to be in read-only memory, making all 'class' structures to be declared at build time placing them into read-only memory, instead of having to be dynamically allocated at load time. Cc: Johan Hovold <johan(a)kernel.org> Cc: Alex Elder <elder(a)kernel.org> Cc: greybus-dev(a)lists.linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/staging/greybus/raw.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) diff --git a/drivers/staging/greybus/raw.c b/drivers/staging/greybus/raw.c index 8bca8cb12cc6..a00978c8e1d2 100644 --- a/drivers/staging/greybus/raw.c +++ b/drivers/staging/greybus/raw.c @@ -32,7 +32,10 @@ struct raw_data { u8 data[]; }; -static struct class *raw_class; +static const struct class raw_class = { + .name = "gb_raw", +}; + static int raw_major; static const struct file_operations raw_fops; static DEFINE_IDA(minors); @@ -195,7 +198,7 @@ static int gb_raw_probe(struct gb_bundle *bundle, if (retval) goto error_connection_disable; - raw->device = device_create(raw_class, &connection->bundle->dev, + raw->device = device_create(&raw_class, &connection->bundle->dev, raw->dev, raw, "gb!raw%d", minor); if (IS_ERR(raw->device)) { retval = PTR_ERR(raw->device); @@ -229,7 +232,7 @@ static void gb_raw_disconnect(struct gb_bundle *bundle) struct raw_data *temp; // FIXME - handle removing a connection when the char device node is open. - device_destroy(raw_class, raw->dev); + device_destroy(&raw_class, raw->dev); cdev_del(&raw->cdev); gb_connection_disable(connection); ida_simple_remove(&minors, MINOR(raw->dev)); @@ -340,11 +343,9 @@ static int raw_init(void) dev_t dev; int retval; - raw_class = class_create("gb_raw"); - if (IS_ERR(raw_class)) { - retval = PTR_ERR(raw_class); + retval = class_register(&raw_class); + if (retval) goto error_class; - } retval = alloc_chrdev_region(&dev, 0, NUM_MINORS, "gb_raw"); if (retval < 0) @@ -361,7 +362,7 @@ static int raw_init(void) error_gb: unregister_chrdev_region(dev, NUM_MINORS); error_chrdev: - class_destroy(raw_class); + class_unregister(&raw_class); error_class: return retval; } @@ -371,7 +372,7 @@ static void __exit raw_exit(void) { greybus_deregister(&gb_raw_driver); unregister_chrdev_region(MKDEV(raw_major, 0), NUM_MINORS); - class_destroy(raw_class); + class_unregister(&raw_class); ida_destroy(&minors); } module_exit(raw_exit); -- 2.42.0

2 years, 7 months

[PATCH v7 0/3] greybus: Add BeaglePlay Greybus Driver

by Ayush Singh

BeagleConnect is both a technology concept and a line of board designs that implement the technology. Born from Greybus, a mechanism for dynamically extending a Linux system with embedded peripherals, BeagleConnect adds two key elements: a 6LoWPAN transport and mikroBUS manifests. The 6LoWPAN transport provides for arbitrary connections, including the IEEE802.15.4g long-range wireless transport supported between BeaglePlay and BeagleConnect Freedom (the first BeagleConnect board design). The mikroBUS manifests provide for rapid prototyping and low-node-count production with sensor boards following the mikroBUS freely-licensable embedded bus standard such that existing Linux drivers can be loaded upon Greybus discovery of the nodes. This patch set provides the Linux-side hooks required for the 6LoWPAN transport for BeagleConnect on BeaglePlay. Also adds required devicetree additions. Tested over `next-20230825`. Link: https://programmershideaway.xyz/tags/gsoc23/ GSoC23 Blog Link: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware Zephyr App Link: https://github.com/Ayush1325/linux/tree/gb-beagleplay GitHub Branch Link: https://docs.beagleboard.org/latest/boards/beagleconnect/index.html BeagleConnect Link: https://docs.beagleboard.org/latest/boards/beagleplay/index.html BeaglePlay Link: https://github.com/Ayush1325/linux/tree/gb-beagleplay Github Repo Link: https://lists.linaro.org/archives/list/greybus-dev@lists.linaro.org/thread/… Patch v6 Changes in Patch v7 v6 -> v7: - Drop speed variable - Fix commit message - add clock-names and descriptions - fix power lines v5 -> v6: - Rename compatible to `ti,cc1352p7` - Fix formatting - Use kerneldoc - Add clocks, power-gpios, reset-gpios to dt bindings v4 -> v5: - Move DT Bindings to net - Rename compatible to `beagle,play-cc1352` - Expose CC1352 as MCU - Remove redundant tracing messages - Fix memory leaks v3 -> v4: - Add DT Bindings - Reorder commits - Improve commit messages v2 -> v3: - Move gb-beagleplay out of staging v1 -> v2: - Combine the driver into a single file - Remove redundant code - Fix Checkpatch complaints - Other suggested changes Ayush Singh (3): dt-bindings: net: Add ti,cc1352p7 greybus: Add BeaglePlay Linux Driver dts: ti: k3-am625-beagleplay: Add beaglecc1352 .../devicetree/bindings/net/ti,cc1352p7.yaml | 51 ++ MAINTAINERS | 7 + .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 4 + drivers/greybus/Kconfig | 10 + drivers/greybus/Makefile | 2 + drivers/greybus/gb-beagleplay.c | 501 ++++++++++++++++++ 6 files changed, 575 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/ti,cc1352p7.yaml create mode 100644 drivers/greybus/gb-beagleplay.c base-commit: 6269320850097903b30be8f07a5c61d9f7592393 -- 2.41.0

2 years, 7 months

[PATCH v6 0/3] greybus: Add BeaglePlay Greybus Driver

by Ayush Singh

BeagleConnect is both a technology concept and a line of board designs that implement the technology. Born from Greybus, a mechanism for dynamically extending a Linux system with embedded peripherals, BeagleConnect adds two key elements: a 6LoWPAN transport and mikroBUS manifests. The 6LoWPAN transport provides for arbitrary connections, including the IEEE802.15.4g long-range wireless transport supported between BeaglePlay and BeagleConnect Freedom (the first BeagleConnect board design). The mikroBUS manifests provide for rapid prototyping and low-node-count production with sensor boards following the mikroBUS freely-licensable embedded bus standard such that existing Linux drivers can be loaded upon Greybus discovery of the nodes. This patch set provides the Linux-side hooks required for the 6LoWPAN transport for BeagleConnect on BeaglePlay. Also adds required devicetree additions. Tested over `next-20230825`. Link: https://programmershideaway.xyz/tags/gsoc23/ GSoC23 Blog Link: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware Zephyr App Link: https://github.com/Ayush1325/linux/tree/gb-beagleplay GitHub Branch Link: https://docs.beagleboard.org/latest/boards/beagleconnect/index.html BeagleConnect Link: https://docs.beagleboard.org/latest/boards/beagleplay/index.html BeaglePlay Link: https://github.com/Ayush1325/linux/tree/gb-beagleplay Github Repo Link: https://lists.linaro.org/archives/list/greybus-dev@lists.linaro.org/thread/… Patch v5 Changes in Patch v6 v5 -> v6: - Rename compatible to `ti,cc1352p7` - Fix formatting - Use kerneldoc - Add clocks, power-gpios, reset-gpios to dt bindings v4 -> v5: - Move DT Bindings to net - Rename compatible to `beagle,play-cc1352` - Expose CC1352 as MCU - Remove redundant tracing messages - Fix memory leaks v3 -> v4: - Add DT Bindings - Reorder commits - Improve commit messages v2 -> v3: - Move gb-beagleplay out of staging v1 -> v2: - Combine the driver into a single file - Remove redundant code - Fix Checkpatch complaints - Other suggested changes Ayush Singh (3): dt-bindings: Add beaglecc1352 greybus: Add BeaglePlay Linux Driver dts: ti: k3-am625-beagleplay: Add beaglecc1352 .../devicetree/bindings/net/ti,cc1352p7.yaml | 48 ++ MAINTAINERS | 7 + .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 4 + drivers/greybus/Kconfig | 10 + drivers/greybus/Makefile | 2 + drivers/greybus/gb-beagleplay.c | 495 ++++++++++++++++++ 6 files changed, 566 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/ti,cc1352p7.yaml create mode 100644 drivers/greybus/gb-beagleplay.c base-commit: 6269320850097903b30be8f07a5c61d9f7592393 -- 2.41.0

2 years, 7 months

[PATCH v5 0/3] greybus: Add BeaglePlay Greybus Driver

by Ayush Singh

BeagleConnect is both a technology concept and a line of board designs that implement the technology. Born from Greybus, a mechanism for dynamically extending a Linux system with embedded peripherals, BeagleConnect adds two key elements: a 6LoWPAN transport and mikroBUS manifests. The 6LoWPAN transport provides for arbitrary connections, including the IEEE802.15.4g long-range wireless transport supported between BeaglePlay and BeagleConnect Freedom (the first BeagleConnect board design). The mikroBUS manifests provide for rapid prototyping and low-node-count production with sensor boards following the mikroBUS freely-licensable embedded bus standard such that existing Linux drivers can be loaded upon Greybus discovery of the nodes. This patch set provides the Linux-side hooks required for the 6LoWPAN transport for BeagleConnect on BeaglePlay. Also adds required devicetree additions. Tested over `next-20230825`. Link: https://programmershideaway.xyz/tags/gsoc23/ GSoC23 Blog Link: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware Zephyr App Link: https://github.com/Ayush1325/linux/tree/gb-beagleplay GitHub Branch Link: https://lists.linaro.org/archives/list/greybus-dev@lists.linaro.org/thread/… Patch v4 Link: https://docs.beagleboard.org/latest/boards/beagleconnect/index.html BeagleConnect Link: https://docs.beagleboard.org/latest/boards/beagleplay/index.html BeaglePlay Link: https://github.com/Ayush1325/linux/tree/gb-beagleplay Github Repo Changes in Patch v5 v4 -> v5: - Move DT Bindings to net - Rename compatible to `beagle,play-cc1352` - Expose CC1352 as MCU - Remove redundant tracing messages - Fix memory leaks v3 -> v4: - Add DT Bindings - Reorder commits - Improve commit messages v2 -> v3: - Move gb-beagleplay out of staging v1 -> v2: - Combine the driver into a single file - Remove redundant code - Fix Checkpatch complaints - Other suggested changes Ayush Singh (3): dt-bindings: Add beaglecc1352 greybus: Add BeaglePlay Linux Driver dts: ti: k3-am625-beagleplay: Add beaglecc1352 .../bindings/net/beagle,play-cc1352.yaml | 25 + MAINTAINERS | 7 + .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 4 + drivers/greybus/Kconfig | 10 + drivers/greybus/Makefile | 4 +- drivers/greybus/gb-beagleplay.c | 526 ++++++++++++++++++ 6 files changed, 574 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/beagle,play-cc1352.yaml create mode 100644 drivers/greybus/gb-beagleplay.c base-commit: 6269320850097903b30be8f07a5c61d9f7592393 -- 2.41.0

2 years, 7 months

[PATCH v4 0/3] greybus: Add BeaglePlay Greybus Driver

by Ayush Singh

BeaglePlay is a board by BeagleBoard.org. It contains a main AM62 processor with a CC1352 co-processor. They are connected over UART. Greybus is a hardware protocol that was designed to provide Unipro with a sane application layer. It can be used in IOT and IIOT applications keeping the intelligence on the host. This driver has been tested on BeaglePlay by BeagleBoard.org. It serves as Greybus Host device and communicates with BeaglePlay CC1352 co-processor which serves as Greybus SVC. This replaces the old setup with bcfserial, wpanusb and GBridge. This driver also contains async HDLC code since communication with SVC take place over UART using HDLC. This driver has been created as a part of my Google Summer of Code 2023. For more information, take a look at my blog. This patchset has been tested over `next-20230825`. My GSoC23 Blog: https://programmershideaway.xyz/tags/gsoc23/ Zephyr App: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware GitHub Branch: https://github.com/Ayush1325/linux/tree/gb-beagleplay Video Demo: https://youtu.be/GVuIB7i5pjk This the v4 of this patch v3 -> v4: - Add DT Bindings - Reorder commits - Improve commit messages v2 -> v3: - Move gb-beagleplay out of staging v1 -> v2: - Combine the driver into a single file - Remove redundant code - Fix Checkpatch complaints - Other suggested changes Ayush Singh (3): dt-bindings: Add beaglecc1352 greybus: Add BeaglePlay Linux Driver dts: ti: k3-am625-beagleplay: Add beaglecc1352 .../bindings/serial/beaglecc1352.yaml | 25 + MAINTAINERS | 7 + .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 4 + drivers/greybus/Kconfig | 10 + drivers/greybus/Makefile | 3 +- drivers/greybus/gb-beagleplay.c | 494 ++++++++++++++++++ 6 files changed, 542 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/serial/beaglecc1352.yaml create mode 100644 drivers/greybus/gb-beagleplay.c -- 2.41.0

2 years, 8 months

[PATCH 00/10] pwm: Constistenly name pwm_chip variables "chip"

by Uwe Kleine-König

while working on an extension for the pwm framework, I noticed that some drivers and even the core only nearly consistently named all variables and struct members holding a pointer to a struct pwm_chip "chip": $ git grep -Pho 'struct pwm_chip \**[a-z0-9_]+(*nla:[\(a-z0-9_])' v6.5-rc1 | sort | uniq -c | sort -n 1 struct pwm_chip *pwm 1 struct pwm_chip pwm 1 struct pwm_chip pwm_chip 2 struct pwm_chip *_chip 4 struct pwm_chip *c 8 struct pwm_chip *pc 57 struct pwm_chip chip 358 struct pwm_chip *chip With this series applied these are all called "chip" with one exception: The led driver drivers/leds/rgb/leds-qcom-lpg.c uses "pwm". Maybe "pwmchip" would be a better name, but I'm not sure that using "chip" was an improvement there as this isn't a pure pwm driver. I'm not touching that one. The first offenders I found were the core and the atmel-hlcdc driver. After I found these I optimistically assumed these were the only ones with the unusual names and send patches for these out individually before checking systematically. The atmel-hlcdc patch is included here unchanged, the core patch now also adapted the declaration of the changed functions in <linux/pwm.h>. I marked these two as "superseded" in patchwork already. All patches in this series are pairwise independent of each other. I don't know if the staging patch should better go in via the greybus tree or via pwm. Both is possible without needing coordination. Best regards Uwe Uwe Kleine-König (10): pwm: Use a consistent name for pwm_chip pointers in the core pwm: atmel-hlcdc: Use consistent variable naming pwm: bcm-kona: Consistenly name pwm_chip variables "chip" pwm: crc: Consistenly name pwm_chip variables "chip" pwm: cros-ec: Consistenly name pwm_chip variables "chip" pwm: lp3943: Consistenly name pwm_chip variables "chip" pwm: rockchip: Consistenly name pwm_chip variables "chip" pwm: sifive: Consistenly name pwm_chip variables "chip" pwm: sl28cpld: Consistenly name pwm_chip variables "chip" staging: greybus: pwm: Consistenly name pwm_chip variables "chip" drivers/pwm/core.c | 28 +++++++-------- drivers/pwm/pwm-atmel-hlcdc.c | 64 +++++++++++++++++------------------ drivers/pwm/pwm-bcm-kona.c | 4 +-- drivers/pwm/pwm-crc.c | 4 +-- drivers/pwm/pwm-cros-ec.c | 10 +++--- drivers/pwm/pwm-lp3943.c | 4 +-- drivers/pwm/pwm-rockchip.c | 4 +-- drivers/pwm/pwm-sifive.c | 4 +-- drivers/pwm/pwm-sl28cpld.c | 10 +++--- drivers/staging/greybus/pwm.c | 12 +++---- include/linux/pwm.h | 6 ++-- 11 files changed, 75 insertions(+), 75 deletions(-) base-commit: 06c2afb862f9da8dc5efa4b6076a0e48c3fbaaa5 -- 2.39.2

2 years, 8 months

[PATCH v4 0/3] greybus: Add BeaglePlay Greybus Driver

by Ayush Singh

2 years, 8 months

[PATCH v3 0/2] greybus: Add BeaglePlay Greybus Driver

by Ayush Singh

This driver can be used in any Greybus setup where SVC and Linux Host are connected over UART. This driver has been tested on BeaglePlay by BeagleBoard.org. It communicates with BeaglePlay CC1352 co-processor which serves as Greybus SVC. This replaces the old setup with bcfserial, wpanusb and GBridge. This driver also contains async HDLC code since communication with SVC take place over UART using HDLC. This patchset also introduces a compatible property for the UART that is connected to CC1352 in BeaglePlay. I am not quite sure if it needs its own DT Schema file under `Documentation/devicetree/bindings/serial`. This driver has been created as a part of my Google Summer of Code 2023. For more information, take a look at my blog. This patchset has been tested over `next-20230825`. My GSoC23 Blog: https://programmershideaway.xyz/tags/gsoc23/ Zephyr App: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware GitHub Branch: https://github.com/Ayush1325/linux/tree/gb-beagleplay Video Demo: https://youtu.be/GVuIB7i5pjk This the v3 of this patch v2 -> v3: - Move gb-beagleplay out of staging v1 -> v2: - Combine the driver into a single file - Remove redundant code - Fix Checkpatch complaints - Other suggested changes Ayush Singh (2): dts: Add beaglecc1352 to devicetree greybus: Add BeaglePlay Linux Driver MAINTAINERS | 5 + .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 4 + drivers/greybus/Kconfig | 10 + drivers/greybus/Makefile | 3 +- drivers/greybus/gb-beagleplay.c | 494 ++++++++++++++++++ 5 files changed, 515 insertions(+), 1 deletion(-) create mode 100644 drivers/greybus/gb-beagleplay.c -- 2.41.0

2 years, 8 months

[PATCH 0/2] staging/greybus: Add BeaglePlay Greybus Driver

by Ayush Singh

This driver can be used in any Greybus setup where SVC and Linux Host are connected over UART. This driver has been tested on BeaglePlay by BeagleBoard.org. It communicates with BeaglePlay CC1352 co-processor which serves as Greybus SVC. This replaces the old setup with bcfserial, wpanusb and GBridge. This driver also contains async HDLC code since communication with SVC take place over UART using HDLC. This patchset also introduces a compatible property for the UART that is connected to CC1352 in BeaglePlay. I am not quite sure if it needs its own DT Schema file under `Documentation/devicetree/bindings/serial`. This driver has been created as a part of my Google Summer of Code 2023. For more information, take a look at my blog. I have made most of the changes requested in the first version of this patch and simplified the code as well. This patchset has been tested over `next-20230825`. My GSoC23 Blog: https://programmershideaway.xyz/tags/gsoc23/ Zephyr Application: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware GitHub Branch: https://github.com/Ayush1325/linux/tree/gb-beagleplay Video Demo: https://youtu.be/GVuIB7i5pjk Ayush Singh (2): dts: Add beaglecc1352 to devicetree staging/greybus: Add BeaglePlay Linux Driver MAINTAINERS | 5 + .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 4 + drivers/staging/greybus/Kconfig | 9 + drivers/staging/greybus/Makefile | 3 + drivers/staging/greybus/gb-beagleplay.c | 493 ++++++++++++++++++ 5 files changed, 514 insertions(+) create mode 100644 drivers/staging/greybus/gb-beagleplay.c -- 2.41.0

2 years, 8 months

[PATCH 0/4] BeaglePlay Greybus Driver

by Ayush Singh

This driver is for BeaglePlay by BeagleBoard.org. It communicates with BeaglePlay CC1352 co-processor which serves as Greybus SVC [1]. This replaces the old setup with bcfserial, wpanusb and GBridge. This driver also contains async HDLC code since communication with CC1352 take place over UART using HDLC. Since this is my first driver, I expect there to be some mistakes, so feel free to give feedback and point out things I might have missed or might not be aware of. This driver has been created as a part of my Google Summer of Code 2023. For more information, take a look at my blog [2] [1]: https://git.beagleboard.org/gsoc/greybus/cc1352-firmware [2]: https://programmershideaway.xyz/tags/gsoc23/ Ayush Singh (4): Add beagleplaygreybus to devicetree Add beagleplay greybus driver Add HDLC helper for beagleplay driver Allow building beagleplay greybus driver .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 4 + drivers/staging/greybus/Kconfig | 9 + drivers/staging/greybus/Makefile | 5 + .../greybus/beagleplay-greybus-driver.c | 264 ++++++++++++++++++ .../greybus/beagleplay-greybus-driver.h | 28 ++ drivers/staging/greybus/hdlc.c | 229 +++++++++++++++ drivers/staging/greybus/hdlc.h | 137 +++++++++ 7 files changed, 676 insertions(+) create mode 100644 drivers/staging/greybus/beagleplay-greybus-driver.c create mode 100644 drivers/staging/greybus/beagleplay-greybus-driver.h create mode 100644 drivers/staging/greybus/hdlc.c create mode 100644 drivers/staging/greybus/hdlc.h -- 2.41.0

2 years, 8 months

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