This is an RFC for the initial version of a6xx support for the Adreno a6xx GPU family as found on the sdm845 SoC. This code is ahead of most of the rest of the sdm845 code that would be needed to actually bring up a device and it is definitely far 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 the a5xx family so most of the GPU side code looks pretty close to the same except for the usual register differences. The big different is in power control. On the a5xx there was a rudimentary device called the GMU 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). The kernel is responsible for powering the GMU and in turn the GMU is responsible for powering the GPU and handling power collapse and advance power saving techniques. Of course the devil is in the details and what we save in power management complexity is unfortunately replaced by the complexity involved in communicating with and controlling the GMU. This version stack depends on the following dependencies: https://patchwork.kernel.org/patch/10286375/ - dev_pm_opp_get_of_node https://patchwork.kernel.org/patch/10283073/ - command DB driver https://patchwork.kernel.org/patch/10281613/ - smmu pm_runtime/sleep opps [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 (1): 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 | 1600 ++++++++++++++++++++++++++++ drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 1225 +++++++++++++++++++++ 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 | 808 ++++++++++++++ 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 | 12 + drivers/gpu/drm/msm/adreno/adreno_gpu.c | 2 +- drivers/gpu/drm/msm/adreno/adreno_gpu.h | 5 +- drivers/gpu/drm/msm/msm_gpu.c | 2 +- 13 files changed, 4820 insertions(+), 3 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 -- 2.16.1 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
