greybus-dev

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[PATCH] staging: greybus: arche: drop dangling Kconfig symbol

by Randy Dunlap

The Kconfig symbol USB_HSIC_USB3613 is not defined in the kernel source tree. Drop it since it unused. Fixes: 2eccd4aa19fc ("staging: greybus: enable compile testing of arche driver") Signed-off-by: Randy Dunlap <rdunlap(a)infradead.org> --- Cc: Vaibhav Hiremath <hvaibhav.linux(a)gmail.com> Cc: Johan Hovold <johan(a)kernel.org> Cc: Alex Elder <elder(a)kernel.org> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: greybus-dev(a)lists.linaro.org Cc: linux-staging(a)lists.linux.dev drivers/staging/greybus/Kconfig | 1 - drivers/staging/greybus/arche-platform.c | 4 ---- 2 files changed, 5 deletions(-) --- linux-next-20251219.orig/drivers/staging/greybus/arche-platform.c +++ linux-next-20251219/drivers/staging/greybus/arche-platform.c @@ -23,14 +23,10 @@ #include <linux/of.h> #include "arche_platform.h" -#if IS_ENABLED(CONFIG_USB_HSIC_USB3613) -#include <linux/usb/usb3613.h> -#else static inline int usb3613_hub_mode_ctrl(bool unused) { return 0; } -#endif #define WD_COLDBOOT_PULSE_WIDTH_MS 30 --- linux-next-20251219.orig/drivers/staging/greybus/Kconfig +++ linux-next-20251219/drivers/staging/greybus/Kconfig @@ -206,7 +206,6 @@ endif # GREYBUS_BRIDGED_PHY config GREYBUS_ARCHE tristate "Greybus Arche Platform driver" - depends on USB_HSIC_USB3613 || COMPILE_TEST help Select this option if you have an Arche device.

20 hours, 52 minutes

[PATCH] staging: greybus: audio: avoid snprintf truncation warnings

by Sun Jian

W=1 reports possible truncation when formatting widget and control names using snprintf() with a %s argument and fixed-size buffers. Build the prefixed names using scnprintf() plus strlcat() instead, so truncation, if any, is handled by the string helpers rather than during printf formatting. No functional change intended. Signed-off-by: Sun Jian <sun.jian.kdev(a)gmail.com> --- drivers/staging/greybus/audio_topology.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/staging/greybus/audio_topology.c b/drivers/staging/greybus/audio_topology.c index 76146f91cddc..4293ab899390 100644 --- a/drivers/staging/greybus/audio_topology.c +++ b/drivers/staging/greybus/audio_topology.c @@ -1087,7 +1087,8 @@ static int gbaudio_tplg_create_widget(struct gbaudio_module_info *module, /* Prefix dev_id to widget control_name */ strscpy(temp_name, w->name, sizeof(temp_name)); - snprintf(w->name, sizeof(w->name), "GB %d %s", module->dev_id, temp_name); + scnprintf(w->name, sizeof(w->name), "GB %d ", module->dev_id); + strlcat(w->name, temp_name, sizeof(w->name)); switch (w->type) { case snd_soc_dapm_spk: @@ -1169,8 +1170,8 @@ static int gbaudio_tplg_process_kcontrols(struct gbaudio_module_info *module, control->id = curr->id; /* Prefix dev_id to widget_name */ strscpy(temp_name, curr->name, sizeof(temp_name)); - snprintf(curr->name, sizeof(curr->name), "GB %d %s", module->dev_id, - temp_name); + scnprintf(curr->name, sizeof(curr->name), "GB %d ", module->dev_id); + strlcat(curr->name, temp_name, sizeof(curr->name)); control->name = curr->name; if (curr->info.type == GB_AUDIO_CTL_ELEM_TYPE_ENUMERATED) { struct gb_audio_enumerated *gbenum = -- 2.43.0

1 day, 8 hours

[PATCH 0/2] staging: greybus: arche-platform: minor cleanups

by Holden Hsu

Holden Hsu (2): staging: greybus: arche-platform: clarify TODO comment staging: greybus: arche-platform: fix spelling mistake in comment drivers/staging/greybus/arche-platform.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) -- 2.43.0

1 day, 13 hours

[PATCH 0/2] staging: greybus: arche-platform: minor fixes

by Hsu Holden

This patch series contains two minor cleanups for the arche-platform driver: Patch 1: Clarifies an unclear TODO comment to make the intent more obvious to future developers. Patch 2: Fixes a simple spelling mistake in a comment. These are low-risk changes that improve code readability. Get Outlook for Android<https://aka.ms/AAb9ysg>

1 day, 14 hours

[PATCH 0/2] staging: greybus: arche-platform: minor fixes

by Hsu Holden

1 day, 14 hours

[PATCH] staging: greybus: split gb_audio_gb_get_topology() into helper functions

by Khaled Saleh

From: khaled <khaled.saleh.req(a)gmail.com> The gb_audio_gb_get_topology() function performs multiple distinct operations: retrieving the topology size, allocating the topology buffer, and fetching the topology data. A TODO comment in the file notes that this logic should be split into separate calls. Introduce helper functions for each step and update gb_audio_gb_get_topology() to use them. This improves readability and maintainability without changing behavior. Signed-off-by: Khaled Saleh <khaled.saleh.req(a)gmail.com> --- drivers/staging/greybus/audio_gb.c | 47 +++++++++++++++++++++++------- 1 file changed, 36 insertions(+), 11 deletions(-) diff --git a/drivers/staging/greybus/audio_gb.c b/drivers/staging/greybus/audio_gb.c index 9d8994fdb41a..0d5109ec14f6 100644 --- a/drivers/staging/greybus/audio_gb.c +++ b/drivers/staging/greybus/audio_gb.c @@ -9,36 +9,61 @@ #include "audio_codec.h" /* TODO: Split into separate calls */ +static int gb_audio_topology_get_size(struct gb_connection *connection, u16 *size) +{ + struct gb_audio_get_topology_size_response resp; + int ret; + + ret = gb_operation_sync(connection, + GB_AUDIO_TYPE_GET_TOPOLOGY_SIZE, + NULL, 0, + &resp, sizeof(resp)); + if (ret) + return ret; + + *size = le16_to_cpu(resp.size); + + return 0; +} + +static struct gb_audio_topology *gb_audio_topology_alloc(u16 size) +{ + if (size < sizeof(struct gb_audio_topology)) + return NULL; + + return kzalloc(size, GFP_KERNEL); +} + +static int gb_audio_topology_fetch(struct gb_connection *connection, + struct gb_audio_topology *topo, u16 size) +{ + return gb_operation_sync(connection, + GB_AUDIO_TYPE_GET_TOPOLOGY, + NULL, 0, + topo, size); +} int gb_audio_gb_get_topology(struct gb_connection *connection, struct gb_audio_topology **topology) { - struct gb_audio_get_topology_size_response size_resp; struct gb_audio_topology *topo; u16 size; int ret; - ret = gb_operation_sync(connection, GB_AUDIO_TYPE_GET_TOPOLOGY_SIZE, - NULL, 0, &size_resp, sizeof(size_resp)); + ret = gb_audio_topology_get_size(connection, &size); if (ret) return ret; - size = le16_to_cpu(size_resp.size); - if (size < sizeof(*topo)) - return -ENODATA; - - topo = kzalloc(size, GFP_KERNEL); + topo = gb_audio_topology_alloc(size); if (!topo) return -ENOMEM; - ret = gb_operation_sync(connection, GB_AUDIO_TYPE_GET_TOPOLOGY, NULL, 0, - topo, size); + ret = gb_audio_topology_fetch(connection, topo, size); if (ret) { kfree(topo); return ret; } *topology = topo; - return 0; } EXPORT_SYMBOL_GPL(gb_audio_gb_get_topology); -- 2.43.0

1 day, 14 hours

[PATCH] staging: greybus: replace WD_STATE_COLDBOOT_TRIG with state

by Gideon Adjei

use state temporary variable to replace WD_STATE_COLDBOOT_TRIG argument in arche_platform_set_wake_detect_state. This keeps lines under 80 columns and satisfies kernel style guidelines. Signed-off-by: Gideon Adjei <gideonadjei.dev(a)gmail.com> --- drivers/staging/greybus/arche-platform.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/staging/greybus/arche-platform.c b/drivers/staging/greybus/arche-platform.c index 8aaff4e45660..bb9b3c3c7a2d 100644 --- a/drivers/staging/greybus/arche-platform.c +++ b/drivers/staging/greybus/arche-platform.c @@ -155,6 +155,7 @@ static irqreturn_t arche_platform_wd_irq(int irq, void *devid) { struct arche_platform_drvdata *arche_pdata = devid; unsigned long flags; + int state; spin_lock_irqsave(&arche_pdata->wake_lock, flags); @@ -179,8 +180,8 @@ static irqreturn_t arche_platform_wd_irq(int irq, void *devid) */ if (arche_pdata->wake_detect_state != WD_STATE_COLDBOOT_START) { - arche_platform_set_wake_detect_state(arche_pdata, - WD_STATE_COLDBOOT_TRIG); + state = WD_STATE_COLDBOOT_TRIG; + arche_platform_set_wake_detect_state(arche_pdata, state); spin_unlock_irqrestore(&arche_pdata->wake_lock, flags); return IRQ_WAKE_THREAD; -- 2.34.1

1 day, 17 hours

Re: [PATCH v3] staging: greybus: audio: avoid snprintf truncation warnings

by david.laight.linux＠gmail.com

The content of this message was lost. It was probably cross-posted to multiple lists and previously handled on another list.

1 week

[PATCH v2] greybus: add WQ_PERCPU to alloc_workqueue users

by Marco Crivellari

This continues the effort to refactor workqueue APIs, which began with the introduction of new workqueues and a new alloc_workqueue flag in: commit 128ea9f6ccfb ("workqueue: Add system_percpu_wq and system_dfl_wq") commit 930c2ea566af ("workqueue: Add new WQ_PERCPU flag") This change adds a new WQ_PERCPU flag to explicitly request alloc_workqueue() to be per-cpu when WQ_UNBOUND has not been specified. With the introduction of the WQ_PERCPU flag (equivalent to !WQ_UNBOUND), any alloc_workqueue() caller that doesn’t explicitly specify WQ_UNBOUND must now use WQ_PERCPU. Once migration is complete, WQ_UNBOUND can be removed and unbound will become the implicit default. Suggested-by: Tejun Heo <tj(a)kernel.org> Signed-off-by: Marco Crivellari <marco.crivellari(a)suse.com> Reviewed-by: Johan Hovold <johan(a)kernel.org> --- Changes in v2: - updated commit log removing two paragraph not strictly related to the work. - subject changed removing "drivers/" before the actual prefix. --- drivers/greybus/operation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/greybus/operation.c b/drivers/greybus/operation.c index 54ccc434a1f7..7e12ffb2dd60 100644 --- a/drivers/greybus/operation.c +++ b/drivers/greybus/operation.c @@ -1238,7 +1238,7 @@ int __init gb_operation_init(void) goto err_destroy_message_cache; gb_operation_completion_wq = alloc_workqueue("greybus_completion", - 0, 0); + WQ_PERCPU, 0); if (!gb_operation_completion_wq) goto err_destroy_operation_cache; -- 2.51.1

1 week, 6 days

[PATCH 0/8] greybus: support point-to-point topology

by Damien Riégel

In a classic Greybus topology, there is an application processor, an SVC, and one or more modules, all connected to a UniPro bus. Most of the time, as the application processor doesn't have a UniPro interface, it is actually connected to a device acting as a bridge with the bus, and this bridge also acts as the SVC. Sometimes, there is no UniPro bus at all, like for the BeaglePlay, which has the following topology: +----+ +------------+ +--------+ | AP | <--- UART ---> | SVC/Bridge | <--- 802.15.4 ---> | Module | +----+ +------------+ +--------+ | | +--------+ `------------ 802.15.4 ---> | Module | +--------+ There are two main interesting aspects with Greybus: - the SVC protocol to monitor and configure the bus - other protocols, to expose module peripherals to the host When the bus has a single module connected directly to the AP, then this module must also implement the SVC protocol: +----+ +------------+ | AP | <--- bus ---> | SVC/Module | +----+ +------------+ The SVC doesn' really serve a purpose here, as there is no bus to manage, and adding its support only increase the complexity and the code size needed on memory-constrained devices. The goal of this patchset is to let a single module expose some Greybus protocols without requiring the module to also implement SVC protocol. We call this mode "Point-To-Point". There are three main notable facts with the implementation of this patchset: - most of the time, what this patchet does is just skipping calls that issue commands to the SVC, as they are not applicable without an SVC - CPort ID allocation is a bit different as there is no SVC/Bridge to do translation between AP address space and interface address space, so the patchset forces allocation of AP CPort IDs that matches the ones found in interface's manifest - enumeration of a module is normally started by a "Module Inserted" event issued by the SVC. As the SVC is absent, the host device driver must manually call a function to start the enumeration We tested this patchset with the gb-beagleplay driver, slightly tweaked to only keep the HLDC over UART part of the driver, connected over UART to an EFR32MG24 running BeagleBoard's implementation of Greybus-Zephyr [1]. In the discussion to integrate this module into Zephyr [2] (it's currently as separate module not part of the main Zephyr code base), there seems to be interest in being able to have a single-node device on the bus without SVC [3]. If some features that were implemented by the SVC are missing, we can consider adding more callbacks to the gb_hd_driver structure at a later time, and let drivers decide how they want to support these features. [1] https://github.com/beagleboard/greybus-zephyr [2] https://github.com/zephyrproject-rtos/zephyr/issues/98259 [3] https://github.com/zephyrproject-rtos/zephyr/issues/98259#issuecomment-3561… Damien Riégel (8): greybus: add P2P interface type greybus: let gb_interface_create take additional p2p argument greybus: force CPort ID allocation in P2P mode greybus: split module creation function greybus: add function create module in P2P mode greybus: make host API work without SVC greybus: add function to create SVC-less host device greybus: add function to probe p2p module drivers/greybus/connection.c | 15 ++++-- drivers/greybus/hd.c | 80 +++++++++++++++++++++++++++---- drivers/greybus/interface.c | 72 ++++++++++++++++++++-------- drivers/greybus/module.c | 55 ++++++++++++++++++--- include/linux/greybus/hd.h | 6 +++ include/linux/greybus/interface.h | 4 +- include/linux/greybus/module.h | 1 + 7 files changed, 193 insertions(+), 40 deletions(-) -- 2.49.0

2 weeks

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