Runtime power management

static const struct dev_pm_ops mali_dev_pm_ops = {
#ifdef CONFIG_PM_RUNTIME
        .runtime_suspend = mali_driver_runtime_suspend,
        .runtime_resume = mali_driver_runtime_resume,
        .runtime_idle = mali_driver_runtime_idle,
#endif
        .suspend = mali_driver_suspend_scheduler,
        .resume = mali_driver_resume_scheduler,
        .freeze = mali_driver_suspend_scheduler,
        .thaw = mali_driver_resume_scheduler,
        .poweroff = mali_driver_suspend_scheduler,
};
#endif

mali_platform_device_register()
{
        ...
        pm_runtime_set_autosuspend_delay(&&(mali_gpu_device.dev), 1000);
        pm_runtime_use_autosuspend(&&(mali_gpu_device.dev));
#endif
        pm_runtime_enable(&&(mali_gpu_device.dev));
        ...
}

mali_scheduler_queue_gp_job()
{
        ...
        _mali_osk_pm_dev_ref_get_async()
        ...
}
 
mali_scheduler_complete_gp_job()
{
        ...
        _mali_osk_pm_dev_ref_pet_async()
        ...
}

mali_pm_common_suspend()
{
        ...
        if (0 < num_groups_down) {
                mali_executor_group_power_down(groups_down, num_groups_down);
                }
 
        for (i = 0; i < num_l2_down; i++) {
                mali_l2_cache_power_down(l2_down[i]);
        }
 
        ...
}

• 2020.1
  • Summary

    • Mali headless egl backend now supports pixmap surface (particularly arm specific handle for dmabuf).

    • Should see incremental performance change over render to texture.

    • Customers can fetch the binaries from github repo: https://github.com/Xilinx/mali-userspace-binaries/tree/rel-v2020.1

• 2019.2
  • Summary

    • Upgrade to r9p0-01rel0:

      • Kernel patches can be found here: https://github.com/Xilinx/meta-xilinx/tree/rel-v2019.2/meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali

    • Note: From 2019.2 onwards Xilinx will not host the binaries in the lounge

    • Customers can fetch the binaries from github repo: https://github.com/Xilinx/mali-userspace-binaries/tree/rel-v2019.2

• 2019.1
  • Summary
    • The variable to toggle different backend has been decoupled from DISTRO_FEATURES. A new variable " MALI_BACKEND_DEFAULT " is used to select backend.
    • Customer can now toggle libMali backend at runtime using update-alternatives. (details can be found below)
    • LibMali (wayland implementation) is made compatible with wayland 1.15
    • wayland-egl implementation will now come from wayland (>=1.14)
    • Bug fix in gbm implementaion  (API: gbm_bo_import)
    • Mali kernel space patches: https://github.com/Xilinx/meta-xilinx/tree/rel-v2019.1/meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali

• 2018.3
  • Summary
    • In addition to fbdev and X11, Mali now supports wayland/GBM and Headless-EGL backend. (details can be found below)
    • Mali kernel driver patches can be found https://github.com/Xilinx/meta-xilinx/tree/rel-v2018.3/meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali

• 2018.1
  • Summary
    • Upgrade to r8p0-01rel0: https://developer.arm.com/products/software/mali-drivers/utgard-kernel
    • Fix for compatibility with 4.14 Linux kernel
    • Patches available in https://github.com/Xilinx/meta-xilinx/tree/rel-v2018.1/meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali
• 2017.3
  • Summary
    • No change in kernel module
    • Fixed the linker issue in the user space library
• 2017.1
  • Summary
    • The in-tree source code has been deprecated
    • Upgrade to r7pp: https://developer.arm.com/products/software/mali-drivers/utgard-kernel#
    • Fix for compatibility with 4.9 Linux kernel
    • Patches available in https://github.com/Xilinx/meta-xilinx/tree/rel-v2017.1/recipes-graphics/mali/kernel-module-mali
• 2016.3
  • Summary
    • Remove compilation warning
    • Fix build error when profiling is enabled
  • Commits
    • 51056e4 staging: mali: r5p1-01rel0: Don't include mali_read_phys() for zynq/zynqmp dadb5e4 staging: mali: r5p1-01rel0: Remove unused trace macros