From patchwork Mon Mar 1 13:05:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ruslan Bilovol X-Patchwork-Id: 12109635 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9B46C433DB for ; Mon, 1 Mar 2021 13:07:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABABD64E56 for ; Mon, 1 Mar 2021 13:07:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235412AbhCANHN (ORCPT ); Mon, 1 Mar 2021 08:07:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235399AbhCANHE (ORCPT ); Mon, 1 Mar 2021 08:07:04 -0500 Received: from mail-lj1-x22f.google.com (mail-lj1-x22f.google.com [IPv6:2a00:1450:4864:20::22f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DA8DEC061756; Mon, 1 Mar 2021 05:06:01 -0800 (PST) Received: by mail-lj1-x22f.google.com with SMTP id e2so12122250ljo.7; Mon, 01 Mar 2021 05:06:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=SCMa5vfTZFElxh1bdw64qo8P8ZQLLOyAHkrJsHGKLpk=; b=LCiSraXUAnIUJifWrHzf0hcUUwXrY8nvntoChz0SptM9g9bAlWC6Y6/JBVdL/AyTDW IqQSXNFuGHtbf79jVnPecI+GjS1gghrS2oKLLsnoyvU8d0FqkfmKeEgiQfnHXk1KwlMV CD+tNttfOhuFRuQRMae1gDv8zSnEIYYW717taZpeyHlRBY0msFGogK/9kGsC56dyw2+L gfdfOTg34zX5bdeO1GJWfMTieycrMOFZtus0bkghlEO8L3/WjmBcvwN/C5xa/EL3lpdH 8UkPXdgLWGlIFz+WkCIh6L7OXb6aH4jgc1Yx4eY48WWE+6KU4C76Bi7OfCzCysxe+uDK OeCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=SCMa5vfTZFElxh1bdw64qo8P8ZQLLOyAHkrJsHGKLpk=; b=Exzw4Vjjp7tbJWzXXqmUlTlSuQHrPTIrVrICxRtyI8pdICO7DfiQGdK9FCVV4EdLOu R/Jh767JRwHzMifr0RuPYumEpkHkHHGLmimV/B2dNZn3CIcozgzZ2j4X9DxE3RZnZ/v0 XzMsabT6a63pfgZSDIDOwDSIqfdE6ijNFAne0iAjIsgmV4I1RGphNDFjCiyew4Sfa5Pb uwvwRygTWydSlhaUgKYHR38JqH8KnPdldA5+BLM/MSDenJPxQWSPmkrCcsOBcaRR/r0y MKR6In0wSApIdePk2gGVqRAQSsJzk9P/eIhF9A+YZDG5lNnw06ZC8XSlMBUG3WHnT9T4 y1wQ== X-Gm-Message-State: AOAM533hph9/zUFEkSldZ146a1leEI3C8zYduj2hl9n0XLlkYP3SVc3n XadK9oSZ+K995z6pKnsNPo0= X-Google-Smtp-Source: ABdhPJzuA0/nnPV0OSY3uEsWuP1T6MJPoETn0P7XTJby/+PFmHWdg028snwgo4PfAaCGSrC0feIG0Q== X-Received: by 2002:a2e:8157:: with SMTP id t23mr9357067ljg.125.1614603960111; Mon, 01 Mar 2021 05:06:00 -0800 (PST) Received: from localhost (crossness-hoof.volia.net. [93.72.107.198]) by smtp.gmail.com with ESMTPSA id o1sm2297904lfq.22.2021.03.01.05.05.58 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Mon, 01 Mar 2021 05:05:59 -0800 (PST) From: Ruslan Bilovol To: Felipe Balbi , Greg Kroah-Hartman , Jonathan Corbet Cc: gschmottlach@gmail.com, linux-usb@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 5/8] usb: audio-v2: add ability to define feature unit descriptor Date: Mon, 1 Mar 2021 15:05:40 +0200 Message-Id: <1614603943-11668-6-git-send-email-ruslan.bilovol@gmail.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1614603943-11668-1-git-send-email-ruslan.bilovol@gmail.com> References: <1614603943-11668-1-git-send-email-ruslan.bilovol@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Similar to UAC1 spec, UAC2 feature unit descriptor has variable size. Current audio-v2 feature unit descriptor structure is used for parsing descriptors, but can't be used to define your own descriptor. Add a new macro similar to what audio v1 already has. Signed-off-by: Ruslan Bilovol --- include/linux/usb/audio-v2.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/include/linux/usb/audio-v2.h b/include/linux/usb/audio-v2.h index ead8c9a..8fc2abd 100644 --- a/include/linux/usb/audio-v2.h +++ b/include/linux/usb/audio-v2.h @@ -156,6 +156,20 @@ struct uac2_feature_unit_descriptor { __u8 bmaControls[]; /* variable length */ } __attribute__((packed)); +#define UAC2_DT_FEATURE_UNIT_SIZE(ch) (6 + ((ch) + 1) * 4) + +/* As above, but more useful for defining your own descriptors: */ +#define DECLARE_UAC2_FEATURE_UNIT_DESCRIPTOR(ch) \ +struct uac2_feature_unit_descriptor_##ch { \ + __u8 bLength; \ + __u8 bDescriptorType; \ + __u8 bDescriptorSubtype; \ + __u8 bUnitID; \ + __u8 bSourceID; \ + __le32 bmaControls[ch + 1]; \ + __u8 iFeature; \ +} __packed + /* 4.7.2.10 Effect Unit Descriptor */ struct uac2_effect_unit_descriptor {