This is an initial version of support for the Adreno a6xx GPU family starting with the a630 from the sdm845 SoC. This code is ahead of much of the sdm845 code that would be needed to actually bring up a device and it is also in advance of any user side support for the a6xx GPU so this is mainly just a chance to look over the code structure and get a feel for the direction that the hardware is going in.
The a6xx GPU is an iteration of a5xx so most of the GPU side code looks pretty identical except for the usual register differences. The big different is in power control. On the a5xx there was a rudimentary device called the GPMU that did some basic power stuff but left most of the complexity to the kernel.
On the a6xx the power complexity is being moved to a component called the GMU (graphics management unit) which handles the power control of the GPU and shuts it down quickly after it goes idle.
This stack has a number of dependencies that are in various stages of being merged:
https://patchwork.kernel.org/patch/10286375/ - dev_pm_opp_get_of_node() https://patchwork.kernel.org/patch/10333575/ - command DB https://patchwork.kernel.org/patch/10301163/ - pm_runtime ops for arm-smmu
[v6 - set nr_clocks to 0 when parsing fails and minor cleanup in msm_iommu for Vivek. Fix compile error in the load firmware patch ]
[v5 - Move firmware loading to adreno_load_gpu() so it is easier to fail if the firmware isn't found ]
[v4 - Add clock parsing helper function and use it for GPU and GMU. Update recommended clock gating settings. Fix a bug in the CMD DB parser. Update register values from updated database ]
[v3 - fix inverted register definition for GMU_SPTPRAC_CLK_STATUS; fix incorrect register check in a5xx_gmu_gx_is_on(), use dev_pm_opp_get_of_node() from Rajendra and Viresh to read the qcom,level from the device tree; read qcom,level from the DT to get the voltage level to pass to the GMU, fix issues identified by smatch]
[v2 - addressed comments from Lucas Stach; added pm_runtime_get_supplier calls for accesses to the GMU IOMMU; moved to SPDX headers for new files]
Jordan Crouse (4): drm/msm: Remove pm_runtime operations from msm_iommu drm/msm: Add a helper function to parse clock names drm/msm/adreno: Load the firmware before bringing up the hardware drm/msm: Add A6XX device support
Sharat Masetty (1): drm/msm: Add generated headers for A6XX
drivers/gpu/drm/msm/Makefile | 3 + drivers/gpu/drm/msm/adreno/a6xx.xml.h | 1784 ++++++++++++++++++++ drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 1172 +++++++++++++ drivers/gpu/drm/msm/adreno/a6xx_gmu.h | 162 ++ drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h | 382 +++++ drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 807 +++++++++ drivers/gpu/drm/msm/adreno/a6xx_gpu.h | 60 + drivers/gpu/drm/msm/adreno/a6xx_hfi.c | 435 +++++ drivers/gpu/drm/msm/adreno/a6xx_hfi.h | 127 ++ drivers/gpu/drm/msm/adreno/adreno_device.c | 35 +- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- drivers/gpu/drm/msm/adreno/adreno_gpu.h | 5 +- drivers/gpu/drm/msm/msm_drv.c | 57 + drivers/gpu/drm/msm/msm_drv.h | 4 + drivers/gpu/drm/msm/msm_gpu.c | 60 +- drivers/gpu/drm/msm/msm_gpu.h | 2 +- drivers/gpu/drm/msm/msm_iommu.c | 13 +- 17 files changed, 5045 insertions(+), 65 deletions(-) create mode 100644 drivers/gpu/drm/msm/adreno/a6xx.xml.h create mode 100644 drivers/gpu/drm/msm/adreno/a6xx_gmu.c create mode 100644 drivers/gpu/drm/msm/adreno/a6xx_gmu.h create mode 100644 drivers/gpu/drm/msm/adreno/a6xx_gmu.xml.h create mode 100644 drivers/gpu/drm/msm/adreno/a6xx_gpu.c create mode 100644 drivers/gpu/drm/msm/adreno/a6xx_gpu.h create mode 100644 drivers/gpu/drm/msm/adreno/a6xx_hfi.c create mode 100644 drivers/gpu/drm/msm/adreno/a6xx_hfi.h