For devices such as 8x74 and 8084, which have a separate OCMEM block used by the GPU (and some other devices), rather than an internal GMEM block inside the GPU, we need a driver to power up and configure OCMEM in order to get the GPU working.
This patchset implements a vastly simplified version of the downstream vendor kernel's OCMEM driver. Currently it is just enough to enable the GPU. But we can worry about other OCMEM users when they have up- stream drivers.
The first patch adds support for the necessary scm interfaces, for the parts of the OCMEM configuration that must be done from secure mode. The second patch can be dropped, as so far this doesn't seem needed for the GPU (I'm just sending the patch now so it can be found later if it turns out to be needed).
The remaining two patches add the OCMEM driver inside drm/msm. If we eventually have other upstream OCMEM users, this would need to be split out. But that should not effect DT bindings, etc, so that is something that can easily be done later when the need arises.
Rob Clark (4): qcom-scm: add ocmem support WIP: qcom-scm: add ocmem dump support drm/msm: update generated headers drm/msm: add OCMEM driver
drivers/firmware/qcom_scm-32.c | 89 ++++++ drivers/firmware/qcom_scm-64.c | 26 ++ drivers/firmware/qcom_scm.c | 160 ++++++++++ drivers/firmware/qcom_scm.h | 17 ++ drivers/gpu/drm/msm/Makefile | 3 +- drivers/gpu/drm/msm/adreno/a2xx.xml.h | 9 +- drivers/gpu/drm/msm/adreno/a3xx.xml.h | 27 +- drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 17 +- drivers/gpu/drm/msm/adreno/a4xx.xml.h | 15 +- drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 19 +- drivers/gpu/drm/msm/adreno/adreno_common.xml.h | 13 +- drivers/gpu/drm/msm/adreno/adreno_pm4.xml.h | 9 +- drivers/gpu/drm/msm/dsi/dsi.xml.h | 4 +- drivers/gpu/drm/msm/dsi/mmss_cc.xml.h | 4 +- drivers/gpu/drm/msm/dsi/sfpb.xml.h | 4 +- drivers/gpu/drm/msm/edp/edp.xml.h | 4 +- drivers/gpu/drm/msm/hdmi/hdmi.xml.h | 4 +- drivers/gpu/drm/msm/hdmi/qfprom.xml.h | 4 +- drivers/gpu/drm/msm/mdp/mdp4/mdp4.xml.h | 4 +- drivers/gpu/drm/msm/mdp/mdp5/mdp5.xml.h | 82 ++++- drivers/gpu/drm/msm/mdp/mdp_common.xml.h | 11 +- drivers/gpu/drm/msm/msm_drv.c | 2 + drivers/gpu/drm/msm/msm_gpu.h | 3 + drivers/gpu/drm/msm/ocmem/ocmem.c | 396 +++++++++++++++++++++++++ drivers/gpu/drm/msm/ocmem/ocmem.h | 46 +++ drivers/gpu/drm/msm/ocmem/ocmem.xml.h | 113 +++++++ include/linux/qcom_scm.h | 14 + 27 files changed, 1032 insertions(+), 67 deletions(-) create mode 100644 drivers/gpu/drm/msm/ocmem/ocmem.c create mode 100644 drivers/gpu/drm/msm/ocmem/ocmem.h create mode 100644 drivers/gpu/drm/msm/ocmem/ocmem.xml.h