diff options
Diffstat (limited to 'meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch')
| -rw-r--r-- | meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch b/meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch new file mode 100644 index 00000000..38ab4042 --- /dev/null +++ b/meta-xilinx-bsp/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch @@ -0,0 +1,153 @@ +From aeff13ad9e9ef73172a9325f669aefd3c0403dbb Mon Sep 17 00:00:00 2001 +From: Madhurkiran Harikrishnan <madhurki@xilinx.com> +Date: Wed, 21 Feb 2018 16:52:15 -0800 +Subject: [PATCH] linux/mali_kernel_linux.c: Enable/disable clock for runtime + resume/suspend + +Enable/Disable the clock for GP,PP0 and PP1 during runtime +resume/suspend. + +Signed-off-by: Madhurkiran Harikrishnan <madhurki@xilinx.com> +Reviewed-by: Hyun Kwon <hyunk@xilinx.com> +Upstream Status: Inappropriate [Xilinx specific] +--- + .../src/devicedrv/mali/linux/mali_kernel_linux.c | 65 ++++++++++++++++++---- + 1 file changed, 54 insertions(+), 11 deletions(-) + +diff --git a/driver/src/devicedrv/mali/linux/mali_kernel_linux.c b/driver/src/devicedrv/mali/linux/mali_kernel_linux.c +index f15fb56..e61f33b 100644 +--- linux/mali_kernel_linux.c ++++ b/linux/mali_kernel_linux.c +@@ -51,6 +51,7 @@ + struct clk *clk_gpu; + struct clk *clk_gpu_pp0; + struct clk *clk_gpu_pp1; ++mali_bool clk_enabled; + #endif + + #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS) +@@ -281,6 +282,46 @@ struct file_operations mali_fops = { + .mmap = mali_mmap + }; + ++static int mali_enable_clk(void) ++{ ++#if defined(CONFIG_ARCH_ZYNQMP) ++ int err = 0; ++ ++ if (clk_enabled) ++ return 0; ++ ++ clk_enabled = MALI_TRUE; ++ err = clk_prepare_enable(clk_gpu); ++ if (err) { ++ MALI_PRINT_ERROR(("Could not enable clock for GP\n\r")); ++ return err; ++ } ++ err = clk_prepare_enable(clk_gpu_pp0); ++ if (err) { ++ MALI_PRINT_ERROR(("Could not enable clock for PP0\n\r")); ++ return err; ++ } ++ err = clk_prepare_enable(clk_gpu_pp1); ++ if (err) { ++ MALI_PRINT_ERROR(("Could not enable clock for PP1\n\r")); ++ return err; ++ } ++#endif ++ return 0; ++} ++ ++static void mali_disable_clk(void) ++{ ++#if defined(CONFIG_ARCH_ZYNQMP) ++ if (clk_enabled) { ++ clk_enabled = MALI_FALSE; ++ clk_disable_unprepare(clk_gpu); ++ clk_disable_unprepare(clk_gpu_pp0); ++ clk_disable_unprepare(clk_gpu_pp1); ++ } ++#endif ++} ++ + #if MALI_ENABLE_CPU_CYCLES + void mali_init_cpu_time_counters(int reset, int enable_divide_by_64) + { +@@ -593,18 +634,19 @@ static int mali_probe(struct platform_device *pdev) + clk_gpu = devm_clk_get(&pdev->dev, "gpu"); + if (IS_ERR(clk_gpu)) + return PTR_ERR(clk_gpu); +- clk_prepare_enable(clk_gpu); + + clk_gpu_pp0 = devm_clk_get(&pdev->dev, "gpu_pp0"); + if (IS_ERR(clk_gpu_pp0)) + return PTR_ERR(clk_gpu_pp0); +- clk_prepare_enable(clk_gpu_pp0); + + clk_gpu_pp1 = devm_clk_get(&pdev->dev, "gpu_pp1"); + if (IS_ERR(clk_gpu_pp1)) + return PTR_ERR(clk_gpu_pp1); +- clk_prepare_enable(clk_gpu_pp1); + #endif ++ ++ err = mali_enable_clk(); ++ if (err) ++ return err; + if (_MALI_OSK_ERR_OK == _mali_osk_wq_init()) { + /* Initialize the Mali GPU HW specified by pdev */ + if (_MALI_OSK_ERR_OK == mali_initialize_subsystems()) { +@@ -632,11 +674,6 @@ static int mali_probe(struct platform_device *pdev) + _mali_osk_wq_term(); + } + +-#if defined(CONFIG_ARCH_ZYNQMP) +- clk_disable_unprepare(clk_gpu); +- clk_disable_unprepare(clk_gpu_pp0); +- clk_disable_unprepare(clk_gpu_pp1); +-#endif + + #ifdef CONFIG_MALI_DEVFREQ + mali_devfreq_term(mdev); +@@ -644,6 +681,7 @@ devfreq_init_failed: + mali_pm_metrics_term(mdev); + pm_metrics_init_failed: + clk_disable_unprepare(mdev->clock); ++ mali_disable_clk(); + clock_prepare_failed: + clk_put(mdev->clock); + #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(CONFIG_OF) \ +@@ -706,9 +744,7 @@ static int mali_remove(struct platform_device *pdev) + + #if defined(CONFIG_ARCH_ZYNQMP) + /* Remove clock */ +- clk_disable_unprepare(clk_gpu); +- clk_disable_unprepare(clk_gpu_pp0); +- clk_disable_unprepare(clk_gpu_pp1); ++ mali_disable_clk(); + #endif + + return 0; +@@ -816,6 +852,8 @@ static int mali_driver_runtime_suspend(struct device *dev) + devfreq_suspend_device(mdev->devfreq); + #endif + ++ mali_disable_clk(); ++ + return 0; + } else { + return -EBUSY; +@@ -824,6 +862,11 @@ static int mali_driver_runtime_suspend(struct device *dev) + + static int mali_driver_runtime_resume(struct device *dev) + { ++ int err ; ++ ++ err = mali_enable_clk(); ++ if (err) ++ return err; + #ifdef CONFIG_MALI_DEVFREQ + struct mali_device *mdev = dev_get_drvdata(dev); + if (!mdev) +-- +2.7.4 + |