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-rw-r--r--meta-xilinx-mali400/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch153
1 files changed, 153 insertions, 0 deletions
diff --git a/meta-xilinx-mali400/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch b/meta-xilinx-mali400/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-mali400/recipes-graphics/mali/kernel-module-mali/0011-linux-mali_kernel_linux.c-Enable-disable-clock-for-r.patch
@@ -0,0 +1,153 @@
1From aeff13ad9e9ef73172a9325f669aefd3c0403dbb Mon Sep 17 00:00:00 2001
2From: Madhurkiran Harikrishnan <madhurki@xilinx.com>
3Date: Wed, 21 Feb 2018 16:52:15 -0800
4Subject: [PATCH] linux/mali_kernel_linux.c: Enable/disable clock for runtime
5 resume/suspend
6
7Enable/Disable the clock for GP,PP0 and PP1 during runtime
8resume/suspend.
9
10Signed-off-by: Madhurkiran Harikrishnan <madhurki@xilinx.com>
11Reviewed-by: Hyun Kwon <hyunk@xilinx.com>
12Upstream Status: Inappropriate [Xilinx specific]
13---
14 .../src/devicedrv/mali/linux/mali_kernel_linux.c | 65 ++++++++++++++++++----
15 1 file changed, 54 insertions(+), 11 deletions(-)
16
17diff --git a/driver/src/devicedrv/mali/linux/mali_kernel_linux.c b/driver/src/devicedrv/mali/linux/mali_kernel_linux.c
18index f15fb56..e61f33b 100644
19--- linux/mali_kernel_linux.c
20+++ b/linux/mali_kernel_linux.c
21@@ -51,6 +51,7 @@
22 struct clk *clk_gpu;
23 struct clk *clk_gpu_pp0;
24 struct clk *clk_gpu_pp1;
25+mali_bool clk_enabled;
26 #endif
27
28 #if defined(CONFIG_MALI400_PROFILING) && defined(CONFIG_MALI_DVFS)
29@@ -281,6 +282,46 @@ struct file_operations mali_fops = {
30 .mmap = mali_mmap
31 };
32
33+static int mali_enable_clk(void)
34+{
35+#if defined(CONFIG_ARCH_ZYNQMP)
36+ int err = 0;
37+
38+ if (clk_enabled)
39+ return 0;
40+
41+ clk_enabled = MALI_TRUE;
42+ err = clk_prepare_enable(clk_gpu);
43+ if (err) {
44+ MALI_PRINT_ERROR(("Could not enable clock for GP\n\r"));
45+ return err;
46+ }
47+ err = clk_prepare_enable(clk_gpu_pp0);
48+ if (err) {
49+ MALI_PRINT_ERROR(("Could not enable clock for PP0\n\r"));
50+ return err;
51+ }
52+ err = clk_prepare_enable(clk_gpu_pp1);
53+ if (err) {
54+ MALI_PRINT_ERROR(("Could not enable clock for PP1\n\r"));
55+ return err;
56+ }
57+#endif
58+ return 0;
59+}
60+
61+static void mali_disable_clk(void)
62+{
63+#if defined(CONFIG_ARCH_ZYNQMP)
64+ if (clk_enabled) {
65+ clk_enabled = MALI_FALSE;
66+ clk_disable_unprepare(clk_gpu);
67+ clk_disable_unprepare(clk_gpu_pp0);
68+ clk_disable_unprepare(clk_gpu_pp1);
69+ }
70+#endif
71+}
72+
73 #if MALI_ENABLE_CPU_CYCLES
74 void mali_init_cpu_time_counters(int reset, int enable_divide_by_64)
75 {
76@@ -593,18 +634,19 @@ static int mali_probe(struct platform_device *pdev)
77 clk_gpu = devm_clk_get(&pdev->dev, "gpu");
78 if (IS_ERR(clk_gpu))
79 return PTR_ERR(clk_gpu);
80- clk_prepare_enable(clk_gpu);
81
82 clk_gpu_pp0 = devm_clk_get(&pdev->dev, "gpu_pp0");
83 if (IS_ERR(clk_gpu_pp0))
84 return PTR_ERR(clk_gpu_pp0);
85- clk_prepare_enable(clk_gpu_pp0);
86
87 clk_gpu_pp1 = devm_clk_get(&pdev->dev, "gpu_pp1");
88 if (IS_ERR(clk_gpu_pp1))
89 return PTR_ERR(clk_gpu_pp1);
90- clk_prepare_enable(clk_gpu_pp1);
91 #endif
92+
93+ err = mali_enable_clk();
94+ if (err)
95+ return err;
96 if (_MALI_OSK_ERR_OK == _mali_osk_wq_init()) {
97 /* Initialize the Mali GPU HW specified by pdev */
98 if (_MALI_OSK_ERR_OK == mali_initialize_subsystems()) {
99@@ -632,11 +674,6 @@ static int mali_probe(struct platform_device *pdev)
100 _mali_osk_wq_term();
101 }
102
103-#if defined(CONFIG_ARCH_ZYNQMP)
104- clk_disable_unprepare(clk_gpu);
105- clk_disable_unprepare(clk_gpu_pp0);
106- clk_disable_unprepare(clk_gpu_pp1);
107-#endif
108
109 #ifdef CONFIG_MALI_DEVFREQ
110 mali_devfreq_term(mdev);
111@@ -644,6 +681,7 @@ devfreq_init_failed:
112 mali_pm_metrics_term(mdev);
113 pm_metrics_init_failed:
114 clk_disable_unprepare(mdev->clock);
115+ mali_disable_clk();
116 clock_prepare_failed:
117 clk_put(mdev->clock);
118 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)) && defined(CONFIG_OF) \
119@@ -706,9 +744,7 @@ static int mali_remove(struct platform_device *pdev)
120
121 #if defined(CONFIG_ARCH_ZYNQMP)
122 /* Remove clock */
123- clk_disable_unprepare(clk_gpu);
124- clk_disable_unprepare(clk_gpu_pp0);
125- clk_disable_unprepare(clk_gpu_pp1);
126+ mali_disable_clk();
127 #endif
128
129 return 0;
130@@ -816,6 +852,8 @@ static int mali_driver_runtime_suspend(struct device *dev)
131 devfreq_suspend_device(mdev->devfreq);
132 #endif
133
134+ mali_disable_clk();
135+
136 return 0;
137 } else {
138 return -EBUSY;
139@@ -824,6 +862,11 @@ static int mali_driver_runtime_suspend(struct device *dev)
140
141 static int mali_driver_runtime_resume(struct device *dev)
142 {
143+ int err ;
144+
145+ err = mali_enable_clk();
146+ if (err)
147+ return err;
148 #ifdef CONFIG_MALI_DEVFREQ
149 struct mali_device *mdev = dev_get_drvdata(dev);
150 if (!mdev)
151--
1522.7.4
153
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-06-01 03:03:07 +0000