drm/amd/display: Add DMUB firmware state debugfs (23640767) · Commits · 戴 / test

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -732,6 +732,29 @@ static int dmub_tracebuffer_show(struct seq_file m, void data)
		return 0;
		}

		/**
		* Returns the DMCUB firmware state contents.
		* Example usage: cat /sys/kernel/debug/dri/0/amdgpu_dm_dmub_fw_state
		*/
		static int dmub_fw_state_show(struct seq_file m, void data)
		{
		struct amdgpu_device *adev = m->private;
		struct dmub_srv_fb_info *fb_info = adev->dm.dmub_fb_info;
		uint8_t *state_base;
		uint32_t state_size;

		if (!fb_info)
		return 0;

		state_base = (uint8_t *)fb_info->fb[DMUB_WINDOW_6_FW_STATE].cpu_addr;
		if (!state_base)
		return 0;

		state_size = fb_info->fb[DMUB_WINDOW_6_FW_STATE].size;

		return seq_write(m, state_base, state_size);
		}

		/*
		* Returns the current and maximum output bpc for the connector.
		* Example usage: cat /sys/kernel/debug/dri/0/DP-1/output_bpc
		@@ -937,6 +960,7 @@ static ssize_t dp_dpcd_data_read(struct file f, char __user buf,
		return read_size - r;
		}

		DEFINE_SHOW_ATTRIBUTE(dmub_fw_state);
		DEFINE_SHOW_ATTRIBUTE(dmub_tracebuffer);
		DEFINE_SHOW_ATTRIBUTE(output_bpc);
		DEFINE_SHOW_ATTRIBUTE(vrr_range);
		@@ -1249,5 +1273,8 @@ int dtn_debugfs_init(struct amdgpu_device *adev)
		debugfs_create_file_unsafe("amdgpu_dm_dmub_tracebuffer", 0644, root,
		adev, &dmub_tracebuffer_fops);

		debugfs_create_file_unsafe("amdgpu_dm_dmub_fw_state", 0644, root,
		adev, &dmub_fw_state_fops);

		return 0;
		}