Merge "msm: VPU: Add debugfs directories for session state information" (bbb25208) · Commits · e / devices / android_kernel_sony_msm8994

drivers/media/platform/msm/vpu/vpu_debug.c

+102 −9

Original line number	Diff line number	Diff line
		@@ -447,21 +447,111 @@ static const struct file_operations vpu_client_ops = {
		.read = read_client,
		};

		static ssize_t read_streaming_state(struct file file, char __user user_buf,
		size_t len, loff_t *ppos)
		{
		struct vpu_dev_session *session = file->private_data;
		char temp_buf[8];
		size_t size, ret;

		size = snprintf(temp_buf, sizeof(temp_buf), "%d\n",
		session->streaming_state == ALL_STREAMING);
		ret = simple_read_from_buffer(user_buf, len, ppos, temp_buf, size);

		return ret;
		}

		static const struct file_operations streaming_state_ops = {
		.open = simple_open,
		.read = read_streaming_state,
		};

		static int init_vpu_session_info_dir(struct dentry *root,
		struct vpu_dev_session *session)
		{
		struct dentry attr_root, attr;
		char attr_name[SZ_16];
		if (!session \|\| !root)
		goto failed_create_dir;

		/* create session debugfs directory */
		snprintf(attr_name, SZ_16, "session_%d", session->id);

		attr_root = debugfs_create_dir(attr_name, root);
		if (IS_ERR_OR_NULL(attr_root)) {
		pr_err("Failed to create %s info directory\n", attr_name);
		goto failed_create_dir;
		}

		/* create number of clients attribute */
		attr = debugfs_create_u32("num_clients", S_IRUGO, attr_root,
		&session->client_count);
		if (IS_ERR_OR_NULL(attr)) {
		pr_err("Failed to create number of clients attribute\n");
		goto failed_create_attr;
		}

		/* create streaming state attribute file */
		attr = debugfs_create_file("streaming", S_IRUGO,
		attr_root, session, &streaming_state_ops);
		if (IS_ERR_OR_NULL(attr)) {
		pr_err("Failed to create streaming state attribute\n");
		goto failed_create_attr;
		}

		/* create resolution attribute files */
		attr = debugfs_create_u32("in_width", S_IRUGO, attr_root,
		&session->port_info[INPUT_PORT].format.width);
		if (IS_ERR_OR_NULL(attr)) {
		pr_err("Failed to create input width attribute\n");
		goto failed_create_attr;
		}

		attr = debugfs_create_u32("in_height", S_IRUGO, attr_root,
		&session->port_info[INPUT_PORT].format.height);
		if (IS_ERR_OR_NULL(attr)) {
		pr_err("Failed to create input height attribute\n");
		goto failed_create_attr;
		}

		attr = debugfs_create_u32("out_width", S_IRUGO, attr_root,
		&session->port_info[OUTPUT_PORT].format.width);
		if (IS_ERR_OR_NULL(attr)) {
		pr_err("Failed to create output width attribute\n");
		goto failed_create_attr;
		}

		attr = debugfs_create_u32("out_height", S_IRUGO, attr_root,
		&session->port_info[OUTPUT_PORT].format.height);
		if (IS_ERR_OR_NULL(attr)) {
		pr_err("Failed to create output height attribute\n");
		goto failed_create_attr;
		}

		return 0;

		failed_create_attr:
		debugfs_remove_recursive(attr_root);
		failed_create_dir:
		return -ENOENT;
		}

		struct dentry init_vpu_debugfs(struct vpu_dev_core core)
		{
		struct dentry *attr;
		struct dentry *root = debugfs_create_dir(VPU_DRV_NAME, NULL);
		struct dentry root, attr;
		int i;

		root = debugfs_create_dir(VPU_DRV_NAME, NULL);
		if (IS_ERR_OR_NULL(root)) {
		if (PTR_ERR(root) != -ENODEV) /* DEBUG_FS is defined */
		pr_err("Failed to create debugfs directory\n");
		goto failed_create_root;
		goto failed_create_dir;
		}

		/* create shutdown delay file */
		attr = debugfs_create_u32("shutdown_delay_ms", S_IRUGO \| S_IWUSR,
		root, &vpu_shutdown_delay);
		if (IS_ERR_OR_NULL(attr)) {
		pr_err("Failed to create shutdown_delay file\n");
		pr_err("Failed to create shutdown_delay attribute\n");
		goto failed_create_attr;
		}

		@@ -523,13 +613,16 @@ struct dentry init_vpu_debugfs(struct vpu_dev_core core)
		goto failed_create_attr;
		}

		/* create sessions station information directories */
		for (i = 0; i < VPU_NUM_SESSIONS; i++)
		init_vpu_session_info_dir(root, core->sessions[i]);

		return root;

		failed_create_attr:
		cleanup_vpu_debugfs(root);
		return attr ? attr : ERR_PTR(-ENOMEM);
		failed_create_root:
		return root ? root : ERR_PTR(-ENOMEM);
		failed_create_dir:
		return NULL;
		}

		void cleanup_vpu_debugfs(struct dentry *root)