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path: root/drivers/soc/tegra/cbb/tegra194-cbb.c
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2025-07-09soc/tegra: cbb: Change master/slave to initiator/targetSumit Gupta
Change usage of 'Master/Slave' to 'Initiator/Target' as per the new convention. Signed-off-by: Sumit Gupta <sumitg@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2024-11-01soc: Switch back to struct platform_driver::remove()Uwe Kleine-König
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/soc 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. On the way do a few whitespace changes to make indention consistent. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Acked-by: Herve Codina <herve.codina@bootlin.com> # for fsl/qe/{qmc,tsa}.c Acked-by: Bjorn Andersson <andersson@kernel.org> # qcom parts Acked-by: Gabriel Somlo <gsomlo@gmail.com> Acked-by: Andrew Jeffery <andrew@codeconstruct.com.au> # aspeed Link: https://lore.kernel.org/r/20241029074859.509587-2-u.kleine-koenig@baylibre.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-10-11soc/tegra: cbb: tegra194-cbb: Convert to platform remove callback returning voidUwe Kleine-König
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 <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <treding@nvidia.com>
2023-07-21soc/tegra: Explicitly include correct DT includesRob Herring
The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Thierry Reding <treding@nvidia.com>
2023-04-05soc/tegra: cbb: tegra194: Use of_address_count() helperYang Yingliang
After commit 16988c742968 ("of/address: introduce of_address_count() helper"), We can use of_address_count() to instead of open-coding it. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2023-04-05soc/tegra: cbb: Remove MODULE_LICENSE in non-modulesNick Alcock
Since commit 8b41fc4454e ("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf"), MODULE_LICENSE declarations are used to identify modules. As a consequence, uses of the macro in non-modules will cause modprobe to misidentify their containing object file as a module when it is not (false positives), and modprobe might succeed rather than failing with a suitable error message. So remove it in the files in this commit, none of which can be built as modules. Signed-off-by: Nick Alcock <nick.alcock@oracle.com> Suggested-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: linux-modules@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: Hitomi Hasegawa <hasegawa-hitomi@fujitsu.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: linux-tegra@vger.kernel.org Signed-off-by: Thierry Reding <treding@nvidia.com>
2023-03-23soc/tegra: cbb: remove linux/version.hMuhammad Usama Anjum
make versioncheck reports the following: ./drivers/soc/tegra/cbb/tegra-cbb.c: 19 linux/version.h not needed. ./drivers/soc/tegra/cbb/tegra194-cbb.c: 26 linux/version.h not needed. ./drivers/soc/tegra/cbb/tegra234-cbb.c: 27 linux/version.h not needed. So remove linux/version.h from these files. Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2022-11-17soc/tegra: cbb: Remove redundant dev_err callShang XiaoJing
devm_ioremap_resource() prints error message in itself. Remove the dev_err call to avoid redundant error message. Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2022-11-11soc/tegra: cbb: Use correct master_id mask for CBB NOC in Tegra194Sumit Gupta
In Tegra194 SoC, master_id bit range is different between cluster NOC and CBB NOC. Currently same bit range is used which results in wrong master_id value. Due to this, illegal accesses from the CCPLEX master do not result in a crash as expected. Fix this by using the correct range for the CBB NOC. Finally, it is only necessary to extract the master_id when the erd_mask_inband_err flag is set because when this is not set, a crash is always triggered. Fixes: b71344221466 ("soc/tegra: cbb: Add CBB 1.0 driver for Tegra194") Fixes: fc2f151d2314 ("soc/tegra: cbb: Add driver for Tegra234 CBB 2.0") Signed-off-by: Sumit Gupta <sumitg@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2022-09-15soc/tegra: cbb: Add CBB 1.0 driver for Tegra194Sumit Gupta
Adding driver to handle errors from Control Backbone (CBB) which are generated due to illegal accesses. CBB 1.0 is used in Tegra194 SoCs. When an error is reported from a NOC within CBB, the driver prints debug information about failed transaction like Error Code, Error Description, Master, Address, AXI ID, Cache, Protection, Security Group etc. It then causes system crash using BUG_ON() or call WARN() based on whether the error type is fatal or not. Signed-off-by: Sumit Gupta <sumitg@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>