From nobody Thu Dec 18 07:53:32 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9848C04FE2 for ; Tue, 15 Aug 2023 19:03:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239820AbjHOTDj (ORCPT ); Tue, 15 Aug 2023 15:03:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45732 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239774AbjHOTDD (ORCPT ); Tue, 15 Aug 2023 15:03:03 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 012362682 for ; Tue, 15 Aug 2023 12:02:41 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 11D391FD6D; Tue, 15 Aug 2023 19:01:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692126110; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EVJBJqPljS5bAtrXtcs5yvyG9sJCsx+H498Fzf+ebP8=; b=LJ3Llucs5fEtsVSJqxidWvwZ5vJte0yiYczTi7CCxSXG0uBVgsFC1gy2wFyq4UtGedhTN5 A7nv4Tr6DO6onRlu6BiFcPSBy/qBtMqZ163y1g7RTjvnsdYi/XB/k/Opxcm1/pTSqcmESj Zpp3ijOCf7CD/utuOjH3xX8l/D0ySb0= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692126110; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EVJBJqPljS5bAtrXtcs5yvyG9sJCsx+H498Fzf+ebP8=; b=K/fwRmStEqMBlXOO9VFb2ww+c5O3zZw0VqwlRd438AVKbaWcmPAK2zDzX9v/XGVQTHpvMf TMBHc8nyEJgHqkBg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id E31081390C; Tue, 15 Aug 2023 19:01:49 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id aIuPNp3L22QTVAAAMHmgww (envelope-from ); Tue, 15 Aug 2023 19:01:49 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org, Takashi Iwai , Mark Brown Subject: [PATCH v2 18/25] ASoC: component: Add generic PCM copy ops Date: Tue, 15 Aug 2023 21:01:29 +0200 Message-Id: <20230815190136.8987-19-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230815190136.8987-1-tiwai@suse.de> References: <20230815190136.8987-1-tiwai@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" For following the ALSA PCM core change, a new PCM copy ops is added toe ASoC component framework: snd_soc_component_driver receives the copy ops, and snd_soc_pcm_component_copy() helper is provided. This also fixes a long-standing potential bug where the ASoC driver covers only copy_user PCM callback and misses the copy from kernel pointers (such as OSS PCM layer), too. As of this patch, the old copy_user is still kept, but it'll be dropped later after all drivers are converted. Reviewed-by: Mark Brown Signed-off-by: Takashi Iwai --- include/sound/soc-component.h | 7 +++++++ sound/soc/soc-component.c | 18 ++++++++++++++++++ sound/soc/soc-pcm.c | 4 +++- 3 files changed, 28 insertions(+), 1 deletion(-) diff --git a/include/sound/soc-component.h b/include/sound/soc-component.h index 87f248a06271..8040f001f2fb 100644 --- a/include/sound/soc-component.h +++ b/include/sound/soc-component.h @@ -141,6 +141,10 @@ struct snd_soc_component_driver { struct snd_pcm_substream *substream, int channel, unsigned long pos, void __user *buf, unsigned long bytes); + int (*copy)(struct snd_soc_component *component, + struct snd_pcm_substream *substream, int channel, + unsigned long pos, struct iov_iter *buf, + unsigned long bytes); struct page *(*page)(struct snd_soc_component *component, struct snd_pcm_substream *substream, unsigned long offset); @@ -512,6 +516,9 @@ int snd_soc_pcm_component_sync_stop(struct snd_pcm_subs= tream *substream); int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream, int channel, unsigned long pos, void __user *buf, unsigned long bytes); +int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream, + int channel, unsigned long pos, + struct iov_iter *buf, unsigned long bytes); struct page *snd_soc_pcm_component_page(struct snd_pcm_substream *substrea= m, unsigned long offset); int snd_soc_pcm_component_mmap(struct snd_pcm_substream *substream, diff --git a/sound/soc/soc-component.c b/sound/soc/soc-component.c index 4356cc320fea..ffa2dd8a21ba 100644 --- a/sound/soc/soc-component.c +++ b/sound/soc/soc-component.c @@ -1052,6 +1052,24 @@ int snd_soc_pcm_component_sync_stop(struct snd_pcm_s= ubstream *substream) return 0; } =20 +int snd_soc_pcm_component_copy(struct snd_pcm_substream *substream, + int channel, unsigned long pos, + struct iov_iter *buf, unsigned long bytes) +{ + struct snd_soc_pcm_runtime *rtd =3D asoc_substream_to_rtd(substream); + struct snd_soc_component *component; + int i; + + /* FIXME. it returns 1st copy now */ + for_each_rtd_components(rtd, i, component) + if (component->driver->copy) + return soc_component_ret(component, + component->driver->copy(component, substream, + channel, pos, buf, bytes)); + + return -EINVAL; +} + int snd_soc_pcm_component_copy_user(struct snd_pcm_substream *substream, int channel, unsigned long pos, void __user *buf, unsigned long bytes) diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 8896227e4fb7..71403da28d37 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -2973,7 +2973,9 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int = num) rtd->ops.ioctl =3D snd_soc_pcm_component_ioctl; if (drv->sync_stop) rtd->ops.sync_stop =3D snd_soc_pcm_component_sync_stop; - if (drv->copy_user) + if (drv->copy) + rtd->ops.copy =3D snd_soc_pcm_component_copy; + else if (drv->copy_user) rtd->ops.copy_user =3D snd_soc_pcm_component_copy_user; if (drv->page) rtd->ops.page =3D snd_soc_pcm_component_page; --=20 2.35.3