From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E065D392C31; Wed, 25 Feb 2026 11:24:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772018644; cv=none; b=tUeO+3th07e4PYnPaHBtTA2vUm80AnOGm21ZUo8xcQfrXhXK0lkoK+x47kGRMdNqGhErQ1n15laZChzlGbwrq8+6C6ivYierdRU2KuU3/Rb+xP7KZ8B+rELO13ktVRpgbomVUABBgTXSS+POL4OnN1FK81U9aTsXfKwzdmnDsMc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772018644; c=relaxed/simple; bh=jSczoSALkEfviEOFlNuY2BWP6opjhQVAmR/wSSbgbXA=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=qT1adB77jszwlgwDovqb1pamtb0wro56i4tUp+5ouEQlc3oXATu6ly9MDUB7F0BppZhx8TuY2GGDHNuFSRDDRl+2FEN6y0Me9x97lmeGND338wH6TKyPjhnl7VVAErPkcrV4AYuj3+remu/5GoxlKY5yQaoMN/yieU7FEIWrjhA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MMDNcp35; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MMDNcp35" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 035ECC2BC86; Wed, 25 Feb 2026 11:24:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772018643; bh=jSczoSALkEfviEOFlNuY2BWP6opjhQVAmR/wSSbgbXA=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=MMDNcp35PyIZHa/T7kY59xi37MBZamkDY4l7byRJ6k9wIcDZYTJwaiRSsaE0NhHC2 kV5UGRqYEjy6bMLxuupB5epEh1/3o5Qdr1gQZiFK/i/ubrziSdXWwlnw3DLPI5LeRN ks8ILCazpiorBCt4ySxW4SWxHdi3jdorKOsFbXKUREBY66izZsmWGyp30Ni/2IMs7C a5H1dpOfP2QQJc6+eqWEm8DuvXACRz9MDAiK3THLT4abUWzhhgc5vVOosfvxQ0Ufn+ hC5wvYpxZmoAme2O7Bw8AB2mRWWWwWDKAIakFkf36DdeosCuiIb4N13cAmGu634Blh OXs9n/p4MfyuA== From: Vinod Koul To: mani@kernel.org, Frank.Li@kernel.org, Koichiro Den Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260215152216.3393561-1-den@valinux.co.jp> References: <20260215152216.3393561-1-den@valinux.co.jp> Subject: Re: [PATCH 0/2] dmaengine: dw-edma: Interrupt-emulation doorbell support Message-Id: <177201864163.93331.15342236938596497444.b4-ty@kernel.org> Date: Wed, 25 Feb 2026 16:54:01 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.13.0 On Mon, 16 Feb 2026 00:22:14 +0900, Koichiro Den wrote: > Some DesignWare eDMA instances support "interrupt emulation", where a > software write can assert the IRQ line without setting the normal > DONE/ABORT status bits. > > In the current mainline, on implementations that support interrupt > emulation, writing once to DMA_{WRITE,READ}_INT_STATUS_OFF is sufficient > to leave the level-triggered IRQ line asserted. Since the shared dw-edma > IRQ handlers only look at DONE/ABORT bits and do not perform any > deassertion sequence for interrupt emulation, the IRQ remains asserted > and is eventually disabled by the generic IRQ layer: > > [...] Applied, thanks! [1/2] dmaengine: dw-edma: Add interrupt-emulation hooks commit: 2e8726879559144b4582fa059780e452b3a1ad41 [2/2] dmaengine: dw-edma: Add virtual IRQ for interrupt-emulation doorbells commit: d9d5e1bdd18074ea27985c777ddc3a8a0b007468 Best regards, -- ~Vinod