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drm/amdgpu: introduce an interface to get clock gating status dynamically 

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
hifive-unleashed-5.1
Huang Rui 2017-01-05 18:44:41 +08:00 committed by Alex Deucher
parent c8394f38fa
commit 6cb2d4e4f3
4 changed files with 19 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@ -194,6 +194,7 @@ int amdgpu_set_clockgating_state(struct amdgpu_device *adev,
int amdgpu_set_powergating_state(struct amdgpu_device *adev,
enum amd_ip_block_type block_type,
enum amd_powergating_state state);
void amdgpu_get_clockgating_state(struct amdgpu_device *adev, u32 *flags);
int amdgpu_wait_for_idle(struct amdgpu_device *adev,
enum amd_ip_block_type block_type);
bool amdgpu_is_idle(struct amdgpu_device *adev,

12
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -1131,6 +1131,18 @@ int amdgpu_set_powergating_state(struct amdgpu_device *adev,
return r;
}
void amdgpu_get_clockgating_state(struct amdgpu_device *adev, u32 *flags)
{
int i;
for (i = 0; i < adev->num_ip_blocks; i++) {
if (!adev->ip_blocks[i].status.valid)
continue;
if (adev->ip_blocks[i].version->funcs->get_clockgating_state)
adev->ip_blocks[i].version->funcs->get_clockgating_state((void *)adev, flags);
}
}
int amdgpu_wait_for_idle(struct amdgpu_device *adev,
enum amd_ip_block_type block_type)
{

4
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
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@ -1365,6 +1365,10 @@ static int amdgpu_debugfs_pm_info(struct seq_file *m, void *data)
struct drm_device *dev = node->minor->dev;
struct amdgpu_device *adev = dev->dev_private;
struct drm_device *ddev = adev->ddev;
u32 flags = 0;
amdgpu_get_clockgating_state(adev, &flags);
seq_printf(m, "Clock Gating Flags Mask: 0x%x\n", flags);
if (!adev->pm.dpm_enabled) {
seq_printf(m, "dpm not enabled\n");

2
drivers/gpu/drm/amd/include/amd_shared.h
View File

@ -214,6 +214,8 @@ struct amd_ip_funcs {
/* enable/disable pg for the IP block */
int (*set_powergating_state)(void *handle,
enum amd_powergating_state state);
/* get current clockgating status */
void (*get_clockgating_state)(void *handle, u32 *flags);
};
#endif /* __AMD_SHARED_H__ */