kernel/git/stable/linux.git/drivers/mailbox/qcom-apcs-ipc-mailbox.c, branch master

mailbox: remove unneeded 'fast_io' parameter in regmap_config

2025-10-06T23:14:00+00:00

When using MMIO with regmap, fast_io is implied. No need to set it again. Signed-off-by: Wolfram Sang Signed-off-by: Jassi Brar

mailbox: qcom-apcs-ipc: Assign OF node to clock controller child device

2025-05-29T15:01:35+00:00

Currently, the child device for the clock controller inside the APCS block is created without any OF node assigned, so the drivers need to rely on the parent device for obtaining any resources. Add support for defining the clock controller inside a "clock-controller" subnode to break up circular dependencies between the mailbox and required parent clocks of the clock controller. For backwards compatibility, if the subnode is not defined, reuse the OF node from the parent device. Signed-off-by: Stephan Gerhold Reviewed-by: Dmitry Baryshkov Signed-off-by: Jassi Brar

mailbox: qcom: Add support for IPQ5424 APCS IPC

2025-01-18T22:17:21+00:00

IPQ5424 mailbox do not have clock support and reuses msm8994_apcs_data. Signed-off-by: Gokul Sriram Palanisamy Signed-off-by: Jassi Brar

mailbox: Switch back to struct platform_driver::remove()

2024-11-24T19:11:01+00:00

After commit 0edb555a65d1 ("platform: Make platform_driver::remove() return void") .remove() is (again) the right callback to implement for platform drivers. Convert all platform drivers below drivers/mailbox to use .remove(), with the eventual goal to drop struct platform_driver::remove_new(). As .remove() and .remove_new() have the same prototypes, conversion is done by just changing the structure member name in the driver initializer. Make a few indentions consistent while touching these struct initializers. Signed-off-by: Uwe Kleine-König Reviewed-by: AngeloGioacchino Del Regno Acked-by: Chen-Yu Tsai Signed-off-by: Jassi Brar

mailbox: qcom-apcs-ipc: Convert to platform remove callback returning void

2024-01-14T05:08:51+00:00

The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new(), which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Signed-off-by: Jassi Brar

mailbox: qcom-apcs-ipc: re-organize compatibles with fallbacks

2024-01-14T05:08:50+00:00

Similarly to previous commit e17225887005 ("mailbox: qcom-apcs-ipc: do not grow the of_device_id"), move compatibles with fallbacks in the of_device_id table, to indicate these are not necessary. This only shuffles the code. No functional impact. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Jassi Brar

mailbox: qcom-apcs-ipc: do not grow the of_device_id

2023-05-04T05:59:56+00:00

Re-organize the compatible devices and add a comment to avoid unneeded of_device_id growth with every new SoC. These devices have quite a lot of similarities and they can use only one compatible fallback for driver binding. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Jassi Brar

mailbox: qcom-apcs-ipc: add IPQ5332 APSS clock support

2023-02-23T20:47:13+00:00

IPQ5332 has the APSS clock controller utilizing the same register space as the APCS, so provide access to the APSS utilizing a child device like other IPQ chipsets. Like IPQ6018, the same controller and driver is used, so utilize IPQ6018 match data for IPQ5332. Signed-off-by: Kathiravan T Reviewed-by: Konrad Dybcio Signed-off-by: Jassi Brar

mailbox: qcom-apcs-ipc: enable APCS clock device for MSM8996

2023-02-23T20:47:12+00:00

MSM8996 also has the clock-related part of the APCS mailbox device. Follow the usual pattern and create a child device to handle these clocks. Signed-off-by: Dmitry Baryshkov Signed-off-by: Jassi Brar

mailbox: qcom-apcs-ipc: Add SM4250 APCS IPC support

2022-12-19T02:40:29+00:00

Enable SM4250 APCS IPC support by adding the compatible. It reuses msm8994_apcs_data. Signed-off-by: Bhupesh Sharma Signed-off-by: Jassi Brar