]> Git Repo - linux.git/blob - drivers/gpu/drm/amd/amdgpu/athub_v4_1_0.c
Merge tag 'irq-urgent-2025-02-08' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux.git] / drivers / gpu / drm / amd / amdgpu / athub_v4_1_0.c
1 /*
2  * Copyright 2023 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  */
23
24 #include "amdgpu.h"
25 #include "athub_v4_1_0.h"
26 #include "athub/athub_4_1_0_offset.h"
27 #include "athub/athub_4_1_0_sh_mask.h"
28 #include "soc15_common.h"
29
30 static uint32_t athub_v4_1_0_get_cg_cntl(struct amdgpu_device *adev)
31 {
32         uint32_t data;
33
34         switch (amdgpu_ip_version(adev, ATHUB_HWIP, 0)) {
35         case IP_VERSION(4, 1, 0):
36                 data = RREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL);
37                 break;
38         default:
39                 data = 0;
40                 break;
41         }
42         return data;
43 }
44
45 static void athub_v4_1_0_set_cg_cntl(struct amdgpu_device *adev, uint32_t data)
46 {
47         switch (amdgpu_ip_version(adev, ATHUB_HWIP, 0)) {
48         case IP_VERSION(4, 1, 0):
49                 WREG32_SOC15(ATHUB, 0, regATHUB_MISC_CNTL, data);
50                 break;
51         default:
52                 break;
53         }
54 }
55
56 static void
57 athub_v4_1_0_update_medium_grain_clock_gating(struct amdgpu_device *adev,
58                                               bool enable)
59 {
60         uint32_t def, data;
61
62         def = data = athub_v4_1_0_get_cg_cntl(adev);
63
64         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ATHUB_MGCG))
65                 data |= ATHUB_MISC_CNTL__CG_ENABLE_MASK;
66         else
67                 data &= ~ATHUB_MISC_CNTL__CG_ENABLE_MASK;
68
69         if (def != data)
70                 athub_v4_1_0_set_cg_cntl(adev, data);
71 }
72
73 static void
74 athub_v4_1_0_update_medium_grain_light_sleep(struct amdgpu_device *adev,
75                                              bool enable)
76 {
77         uint32_t def, data;
78
79         def = data = athub_v4_1_0_get_cg_cntl(adev);
80
81         if (enable && (adev->cg_flags & AMD_CG_SUPPORT_ATHUB_LS))
82                 data |= ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
83         else
84                 data &= ~ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK;
85
86         if (def != data)
87                 athub_v4_1_0_set_cg_cntl(adev, data);
88 }
89
90 int athub_v4_1_0_set_clockgating(struct amdgpu_device *adev,
91                                  enum amd_clockgating_state state)
92 {
93         if (amdgpu_sriov_vf(adev))
94                 return 0;
95
96         switch (amdgpu_ip_version(adev, ATHUB_HWIP, 0)) {
97         case IP_VERSION(4, 1, 0):
98                 athub_v4_1_0_update_medium_grain_clock_gating(adev,
99                                 state == AMD_CG_STATE_GATE);
100                 athub_v4_1_0_update_medium_grain_light_sleep(adev,
101                                 state == AMD_CG_STATE_GATE);
102                 break;
103         default:
104                 break;
105         }
106
107         return 0;
108 }
109
110 void athub_v4_1_0_get_clockgating(struct amdgpu_device *adev, u64 *flags)
111 {
112         int data;
113
114         /* AMD_CG_SUPPORT_ATHUB_MGCG */
115         data = athub_v4_1_0_get_cg_cntl(adev);
116         if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
117                 *flags |= AMD_CG_SUPPORT_ATHUB_MGCG;
118
119         /* AMD_CG_SUPPORT_ATHUB_LS */
120         if (data & ATHUB_MISC_CNTL__CG_MEM_LS_ENABLE_MASK)
121                 *flags |= AMD_CG_SUPPORT_ATHUB_LS;
122 }
This page took 0.035736 seconds and 4 git commands to generate.