kernel/linux.git/drivers/gpu/drm/tegra/nvdec.c, branch v6.4

drm/tegra: nvdec: Convert to platform remove callback returning void

2023-04-04T12:24:41+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 (mostly) ignored 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. 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: Thierry Reding

gpu: host1x: Make host1x_client_unregister() return void

2023-04-04T11:59:10+00:00

This function returned zero unconditionally. Make it return no value and simplify all callers accordingly. Signed-off-by: Uwe Kleine-König Acked-by: Hans Verkuil Signed-off-by: Thierry Reding

drm/tegra: nvdec: Use tegra_dev_iommu_get_stream_id()

2023-01-27T16:49:44+00:00

Use the newly implemented tegra_dev_iommu_get_stream_id() helper to encapsulate and centralize the IOMMU stream ID access. Signed-off-by: Thierry Reding

drm/tegra: Add Tegra234 support to NVDEC driver

2022-11-25T15:14:58+00:00

Add support for the Tegra234 version of NVDEC to the NVDEC driver. This version sports a RISC-V controller and requires a few additional clocks. After firmware has been loaded, the behavior is, however, backwards compatible. Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding

drm/tegra: nvdec: Support multiple clocks

2022-11-25T15:14:58+00:00

NVDEC on Tegra234 requires multiple clocks. Add support for that. Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding

drm/tegra: Include DMA API header where used

2022-07-08T15:01:15+00:00

Even though the IOVA API never actually needed it, iova.h is still carrying an include of dma-mapping.h, now solely for the sake of not breaking tegra-drm. Fix that properly. Signed-off-by: Robin Murphy Signed-off-by: Thierry Reding

drm/tegra: Implement stream ID related callbacks on engines

2022-07-08T14:27:52+00:00

Implement the get_streamid_offset and can_use_memory_ctx callbacks required for supporting context isolation. Since old firmware on VIC cannot support context isolation without hacks that we don't want to implement, check the firmware binary to see if context isolation should be enabled. Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding

drm/tegra: nvdec: Fix TRANSCFG register offset

2022-07-08T14:27:52+00:00

NVDEC's TRANSCFG register is at a different offset than VIC. This becomes a problem now when context isolation is enabled and the reset value of the register is no longer sufficient. Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding

drm/tegra: Consolidate runtime PM management of older UAPI codepath

2021-12-16T13:07:08+00:00

Move runtime PM management of older UAPI code paths into the common place. This removes boilerplate code from client drivers. Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding

drm/tegra: nvdec: Stop channel on suspend

2021-12-16T13:07:08+00:00

CDMA must be stopped before hardware is suspended. Add channel stopping to RPM suspend callback. Add system level suspend-resume callbacks. Runtime PM initialization is moved to host1x client init phase because RPM callback now uses host1x channel that is available only when host1x client is registered. Reviewed-by: Ulf Hansson Signed-off-by: Dmitry Osipenko Signed-off-by: Thierry Reding