drm/amdgpu add max_memory_clock for interface query (v2)

Add a query for the max memory clock.

v2: handle the dpm enabled case properly

Signed-off-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewd-by: Jammy Zhou <Jammy.Zhou@amd.com>

2 files changed, 7 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index b6dd3751d9a5..3c182b6c5a27 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -414,11 +414,15 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
                 dev_info.num_shader_arrays_per_engine = adev->gfx.config.max_sh_per_se;
                 /* return all clocks in KHz */
                 dev_info.gpu_counter_freq = amdgpu_asic_get_xclk(adev) * 10;
-                if (adev->pm.dpm_enabled)
+                if (adev->pm.dpm_enabled) {
                         dev_info.max_engine_clock =
                                 adev->pm.dpm.dyn_state.max_clock_voltage_on_ac.sclk * 10;
-                else
+                        dev_info.max_memory_clock =
+                                adev->pm.dpm.dyn_state.max_clock_voltage_on_ac.mclk * 10;
+                } else {
                         dev_info.max_engine_clock = adev->pm.default_sclk * 10;
+                        dev_info.max_memory_clock = adev->pm.default_mclk * 10;
+                }
                 dev_info.enabled_rb_pipes_mask = adev->gfx.config.backend_enable_mask;
                 dev_info.num_rb_pipes = adev->gfx.config.max_backends_per_se *
                                         adev->gfx.config.max_shader_engines;
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index cd54891b1d5c..420c762f2ed7 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -553,6 +553,7 @@ struct drm_amdgpu_info_device {
         uint32_t num_shader_arrays_per_engine;
         uint32_t gpu_counter_freq; /* in KHz */
         uint64_t max_engine_clock; /* in KHz */
+        uint64_t max_memory_clock; /* in KHz */
         /* cu information */
         uint32_t cu_active_number;
         uint32_t cu_ao_mask;