From nobody Mon Dec 1 21:31:53 2025 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 7274A315772; Mon, 1 Dec 2025 13:44:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.160.252.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764596651; cv=none; b=VGCjeCQA48GsaeEDS+W3VQzd7HekIqhVUBorvQPK/NQcalokr7l1S1pUjaA7ZzQlwtBdwyXq35IF9SqVnsv44Ciw2henZfvV/SLnGROZz3Z3iQK/XFdC+IEDOiA6l0zdp6u1eMFr9ImnCuD1zGKBVEcMA5J/P2KYZdA0wwmIpi8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764596651; c=relaxed/simple; bh=u27xUl0kkOLy0u6f2Vq6bB/XgClSoN0MGg3XY8/l5kY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=RnmtAwWCn778u++zHie7nnFxS4yEvt6J0mIFYs2wm7srT7WVhk3uiYnOhpkuuIC23to9xXQWDoifRUn6bJqs9yjQXkaYoCCLfmEaxtd+WSOTO8Lqjvp1yDmWSso+XnHoHDQpn9hUmDduHM7o1AGhu9iWGaOtJ5DePm/w+Im5NI0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com; spf=pass smtp.mailfrom=renesas.com; arc=none smtp.client-ip=210.160.252.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=renesas.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=renesas.com X-CSE-ConnectionGUID: gKuZGwdUTpy7cQ1SKd0kqw== X-CSE-MsgGUID: mVBLJdHOSoSQDgDnPr5N8w== Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 01 Dec 2025 22:44:05 +0900 Received: from demon-pc.localdomain (unknown [10.226.93.83]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 6BAE84215A4E; Mon, 1 Dec 2025 22:44:01 +0900 (JST) From: Cosmin Tanislav To: Fabrizio Castro , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Geert Uytterhoeven , Magnus Damm , Philipp Zabel Cc: linux-spi@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Cosmin Tanislav Subject: [PATCH 09/13] spi: rzv2h-rspi: split out PIO transfer Date: Mon, 1 Dec 2025 15:42:25 +0200 Message-ID: <20251201134229.600817-10-cosmin-gabriel.tanislav.xa@renesas.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251201134229.600817-1-cosmin-gabriel.tanislav.xa@renesas.com> References: <20251201134229.600817-1-cosmin-gabriel.tanislav.xa@renesas.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" In preparation for implementing DMA support, split out the PIO transfer code into its own function. Signed-off-by: Cosmin Tanislav --- drivers/spi/spi-rzv2h-rspi.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) diff --git a/drivers/spi/spi-rzv2h-rspi.c b/drivers/spi/spi-rzv2h-rspi.c index b31ef2f31f1b..9f5bc047b485 100644 --- a/drivers/spi/spi-rzv2h-rspi.c +++ b/drivers/spi/spi-rzv2h-rspi.c @@ -219,17 +219,14 @@ static int rzv2h_rspi_receive(struct rzv2h_rspi_priv = *rspi, void *rxbuf, return 0; } =20 -static int rzv2h_rspi_transfer_one(struct spi_controller *controller, +static int rzv2h_rspi_transfer_pio(struct rzv2h_rspi_priv *rspi, struct spi_device *spi, - struct spi_transfer *transfer) + struct spi_transfer *transfer, + unsigned int words_to_transfer) { - struct rzv2h_rspi_priv *rspi =3D spi_controller_get_devdata(controller); - unsigned int words_to_transfer, i; + unsigned int i; int ret =3D 0; =20 - transfer->effective_speed_hz =3D rspi->freq; - words_to_transfer =3D transfer->len / rspi->bytes_per_word; - for (i =3D 0; i < words_to_transfer; i++) { rzv2h_rspi_clear_all_irqs(rspi); =20 @@ -240,6 +237,22 @@ static int rzv2h_rspi_transfer_one(struct spi_controll= er *controller, break; } =20 + return ret; +} + +static int rzv2h_rspi_transfer_one(struct spi_controller *controller, + struct spi_device *spi, + struct spi_transfer *transfer) +{ + struct rzv2h_rspi_priv *rspi =3D spi_controller_get_devdata(controller); + unsigned int words_to_transfer; + int ret; + + transfer->effective_speed_hz =3D rspi->freq; + words_to_transfer =3D transfer->len / rspi->bytes_per_word; + + ret =3D rzv2h_rspi_transfer_pio(rspi, spi, transfer, words_to_transfer); + rzv2h_rspi_clear_all_irqs(rspi); =20 return ret; --=20 2.52.0