From patchwork Tue Jun 25 21:54:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcelo Schmitt X-Patchwork-Id: 13712080 Received: from mx0b-00128a01.pphosted.com (mx0a-00128a01.pphosted.com [148.163.135.77]) (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 F3AD617E47B; Tue, 25 Jun 2024 21:55:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.135.77 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719352515; cv=none; b=RdtL6b4CwS3bZl2psH0KYmhT81R3/5OWaOPavHb6uSNKwDZaEY4dnSCWqbMKw/0jWPbgHpb32BN9+P8/GWKgcYRCUsqaA5z2m6kZXOoTTRttdGVm7Oxu/Dn4MjXfw6dFBjptnSDi36o9seWLNXiBp8SwRnZPYV3FR4MdF5nq64o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719352515; c=relaxed/simple; bh=rrynkdeLz0DR/A47xR9FBRWLl63w8pB0QxcERiUtfSQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=f8AuFJholsa3eCBBgyDGCyWwt7f0iu+JwjPkA8ghmJKCfHvhfaRGR3oNIqeBxu6XyIaZsPeOE7m9HU0eQn3F17Zv4+zzLNL6SF111LNvXrhBbiNKI08Y6Y1wkfuvW2BLWaQ7SWmaV2SuvMuwZcDVEjIEqhs+RYMGH0ELT/T7HeI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com; spf=pass smtp.mailfrom=analog.com; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b=KBbzQzFI; arc=none smtp.client-ip=148.163.135.77 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=analog.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=analog.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=analog.com header.i=@analog.com header.b="KBbzQzFI" Received: from pps.filterd (m0375855.ppops.net [127.0.0.1]) by mx0b-00128a01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45PL5cN0011726; Tue, 25 Jun 2024 17:54:59 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=analog.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=DKIM; bh=StqHt 6GvFMeL48gtt2x6fIg8lhPFR3ysTVcH8mMm70k=; b=KBbzQzFICyWCkjYvv3Fw9 1EEnBMRcnh9SUbI9gw99V2JqxuFfottR+MeWAUJqAmBCs5vAbRjRebc6aMr9ItjH 4iWlgoFzzD7f9LtJFZ30vDPYAZiuVJnGYm9ObiopRPjjD6WZY1PfcrzmhKW0Bjva +aH9N4DaFo+FluZ8eVJMik1XquYMivzQN/vm/IQQoXBGuBLdqBbpoQq+Bp2lUxcd Tn2gfZDXxMjIsya5kYKpXuU4eSx01f3SxmkKHYArYGqMGbh0/3UCvr/QMHroTDC6 oCar+0qzPmE3iIpodLl2adwRqHbsjkj1LZ1MZPj2Fnc1f/lYa7E9NOsMCi4ry3mp g== Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0b-00128a01.pphosted.com (PPS) with ESMTPS id 3yyum1aa6a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 25 Jun 2024 17:54:58 -0400 (EDT) Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 45PLsvtm007082 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 25 Jun 2024 17:54:57 -0400 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) by ASHBMBX9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Tue, 25 Jun 2024 17:54:56 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Tue, 25 Jun 2024 17:54:56 -0400 Received: from work.ad.analog.com (HYB-hERzalRezfV.ad.analog.com [10.65.205.129]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 45PLsb6N013828; Tue, 25 Jun 2024 17:54:39 -0400 From: Marcelo Schmitt To: , , , , , , , , , , CC: , , , , Subject: [PATCH v5 4/7] spi: spi-axi-spi-engine: Add support for MOSI idle configuration Date: Tue, 25 Jun 2024 18:54:36 -0300 Message-ID: <072d74af9fc624490b84a1d001039424e572e827.1719351923.git.marcelo.schmitt@analog.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: c7LbqhxYSxP3XkF59K-YnzdCiuLnR46b X-Proofpoint-ORIG-GUID: c7LbqhxYSxP3XkF59K-YnzdCiuLnR46b X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-25_17,2024-06-25_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 clxscore=1015 mlxscore=0 impostorscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 malwarescore=0 bulkscore=0 suspectscore=0 spamscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2406250163 Implement MOSI idle low and MOSI idle high to better support peripherals that request specific MOSI behavior. Signed-off-by: Marcelo Schmitt Acked-by: Nuno Sa Reviewed-by: David Lechner --- drivers/spi/spi-axi-spi-engine.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/spi/spi-axi-spi-engine.c b/drivers/spi/spi-axi-spi-engine.c index 0aa31d745734..5a88d31ca758 100644 --- a/drivers/spi/spi-axi-spi-engine.c +++ b/drivers/spi/spi-axi-spi-engine.c @@ -41,6 +41,7 @@ #define SPI_ENGINE_CONFIG_CPHA BIT(0) #define SPI_ENGINE_CONFIG_CPOL BIT(1) #define SPI_ENGINE_CONFIG_3WIRE BIT(2) +#define SPI_ENGINE_CONFIG_SDO_IDLE_HIGH BIT(3) #define SPI_ENGINE_INST_TRANSFER 0x0 #define SPI_ENGINE_INST_ASSERT 0x1 @@ -132,6 +133,10 @@ static unsigned int spi_engine_get_config(struct spi_device *spi) config |= SPI_ENGINE_CONFIG_CPHA; if (spi->mode & SPI_3WIRE) config |= SPI_ENGINE_CONFIG_3WIRE; + if (spi->mode & SPI_MOSI_IDLE_HIGH) + config |= SPI_ENGINE_CONFIG_SDO_IDLE_HIGH; + if (spi->mode & SPI_MOSI_IDLE_LOW) + config &= ~SPI_ENGINE_CONFIG_SDO_IDLE_HIGH; return config; } @@ -646,6 +651,9 @@ static int spi_engine_probe(struct platform_device *pdev) host->dev.of_node = pdev->dev.of_node; host->mode_bits = SPI_CPOL | SPI_CPHA | SPI_3WIRE; + if (ADI_AXI_PCORE_VER_MAJOR(version) >= 1 && + ADI_AXI_PCORE_VER_MINOR(version) >= 3) + host->mode_bits |= SPI_MOSI_IDLE_LOW | SPI_MOSI_IDLE_HIGH; host->bits_per_word_mask = SPI_BPW_RANGE_MASK(1, 32); host->max_speed_hz = clk_get_rate(spi_engine->ref_clk) / 2; host->transfer_one_message = spi_engine_transfer_one_message;