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d=suse.de; s=susede2_ed25519; t=1673339810; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=GXeFo9P91gTYdK+C2m1QxVFGsJvTKhMhx5nV2aVYSOg=; b=gRgRgvUHylzMechgH6ItCoLX8jrdjmnye3tRUKGniPNQ3LFU7ZpWlJYyrEN02nfVQXgOwK TrFa8b2LipSp1QBg== 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 3668913338; Tue, 10 Jan 2023 08:36:50 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id ilRhDKIjvWPGFgAAMHmgww (envelope-from ); Tue, 10 Jan 2023 08:36:50 +0000 Date: Tue, 10 Jan 2023 09:36:49 +0100 Message-ID: <87ilheeqfy.wl-tiwai@suse.de> From: Takashi Iwai To: Takashi Sakamoto Subject: Re: [PATCH] ALSA: firewire-lib: extend tracepoints event including CYCLE_TIME of 1394 OHCI In-Reply-To: <20230109213231.138223-1-o-takashi@sakamocchi.jp> References: <20230109213231.138223-1-o-takashi@sakamocchi.jp> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/27.2 Mule/6.0 MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, clemens@ladisch.de Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On Mon, 09 Jan 2023 22:32:31 +0100, Takashi Sakamoto wrote: > > A commit baa914cd81f5 ("firewire: add kernel API to access CYCLE_TIME > register") allow unit drivers to read CYCLE_TIME of 1394 OHCI controller. > The value expresses monotonic time with 42.195 Mhz resolution and wrapping > around every 128 seconds. The controller uses the time to govern > isochronous cycle. > > This commit extends tracepoints event including the value so that event > parser can compute gap between current isochronous cycle and the latest > isochronous cycle in which packet is processed (in IR context) or scheduled > (in IT context). It loses backward compatibility to former format of the > tracepoints event. > > Signed-off-by: Takashi Sakamoto Thanks, applied now. Takashi