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rs/gpu/host1x/dev.h?id=1fa8d07ae1a5fa4e87de42c338e8fc27f46d8bb6'>gpu: host1x: Skip reset assert on Tegra186Mikko Perttunen On Tegra186, secure world applications may need to access host1x during suspend/resume, and rely on the kernel to keep Host1x out of reset during the suspend cycle. As such, as a quirk, skip asserting Host1x's reset on Tegra186. We don't need to keep the clocks enabled, as BPMP ensures the clock stays on while Host1x is being used. On newer SoC's, the reset line is inaccessible, so there is no need for the quirk. Fixes: b7c00cdf6df5 ("gpu: host1x: Enable system suspend callbacks") Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Reviewed-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240222010517.1573931-1-cyndis@kapsi.fi 2023-10-11gpu: host1x: Syncpoint interrupt shardingMikko Perttunen Support sharded syncpoint interrupts on Tegra234+. This feature allows specifying one of eight interrupt lines for each syncpoint to lower processing latency of syncpoint threshold interrupts. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230901114008.672433-1-cyndis@kapsi.fi 2023-01-26gpu: host1x: Rewrite syncpoint interrupt handlingMikko Perttunen Move from the old, complex intr handling code to a new implementation based on dma_fences. While there is a fair bit of churn to get there, the new implementation is much simpler and likely faster as well due to allowing signaling directly from interrupt context. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> 2022-07-08gpu: host1x: Program virtualization tablesMikko Perttunen Program virtualization tables specifying which VMs have access to which Host1x hardware resources. Programming these has become mandatory in Tegra234. For now, since the driver does not operate as a Host1x hypervisor, we basically allow access to everything to everyone. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> 2022-07-08gpu: host1x: Simplify register mapping and add common apertureMikko Perttunen Refactor 'regs' property loading using devm_platform_ioremap_* and add loading of the 'common' region found on Tegra234. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> 2022-07-08gpu: host1x: Add context device management codeMikko Perttunen Add code to register context devices from device tree, allocate them out and manage their refcounts. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> 2021-12-16gpu: host1x: Add initial runtime PM and OPP supportDmitry Osipenko Add runtime PM and OPP support to the Host1x driver. For the starter we will keep host1x always-on because dynamic power management require a major refactoring of the driver code since lot's of code paths are missing the RPM handling and we're going to remove some of these paths in the future. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30 Tested-by: Paul Fertser <fercerpav@gmail.com> # PAZ00 T20 Tested-by: Nicolas Chauvet <kwizart@gmail.com> # PAZ00 T20 and TK1 T124 Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30 Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com> 2021-12-16drm/tegra: Implement buffer object cacheThierry Reding This cache is used to avoid mapping and unmapping buffer objects unnecessarily. Mappings are cached per client and stay hot until the buffer object is destroyed. Signed-off-by: Thierry Reding <treding@nvidia.com>