amdgpu/pm: Implement new API function "emit" that accepts buffer base and write offset

   (v3)
     Rewrote patchset to order patches as (API, hw impl, usecase)

     - added API for new power management function emit_clk_levels
       This function should duplicate the functionality of print_clk_levels,
       but this solution passes the buffer base and write offset down the stack.
     - new powerplay function emit_clock_levels, implemented by smu_emit_ppclk_levels()
       This function parallels the implementation of smu_print_ppclk_levels and
       calls emit_clk_levels, and allows the returns of errors
     - new helper function smu_convert_to_smuclk called by smu_print_ppclk_levels and
       smu_emit_ppclk_levels

Signed-off-by: Darren Powell <darren.powell@amd.com>
Reviewed-By: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
index 5cc05110cdae..1ed0ef898eb0 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h
@@ -441,6 +441,10 @@ int amdgpu_dpm_odn_edit_dpm_table(struct amdgpu_device *adev,
 int amdgpu_dpm_print_clock_levels(struct amdgpu_device *adev,
 				  enum pp_clock_type type,
 				  char *buf);
+int amdgpu_dpm_emit_clock_levels(struct amdgpu_device *adev,
+				  enum pp_clock_type type,
+				  char *buf,
+				  int *offset);
 int amdgpu_dpm_set_ppfeature_status(struct amdgpu_device *adev,
 				    uint64_t ppfeature_masks);
 int amdgpu_dpm_get_ppfeature_status(struct amdgpu_device *adev, char *buf);