From patchwork Fri Jan 17 13:06:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antoniu Miclaus X-Patchwork-Id: 13943310 Received: from mx0a-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 1FC7B200114; Fri, 17 Jan 2025 13:07:29 +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=1737119251; cv=none; b=oRNLDScqZ+k5v9e2hj3MzKokk9xaKOsz6NG+kezutK1/3/zv0Md/CCHL+pReJd51tHEzeuI9kY6PhdsXqJwwBDBBFIl1c8WF9MtArohBsRD8AoCGbK+OuUpjWhNtoTz1KJrcVad5zDg3CZuercszTiWFR+TSOBP3JxUNWzZeJWA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737119251; c=relaxed/simple; bh=qaWTZe1XLJMU1EUDS6gFCbg0QPrkZHyasNHFUGdx1g0=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=uIVcCldHiHKss1X28CpFGSx3IjRGBg+S3iHgF26vrNoNXpdrPljHWTSLUr4zMw94O+P452B8paXqabcfIQxm7v/ZbvX+Gc5qVwkwnr4PR0gA8QVG/zB/P9CvK/GtaDXmxfGu0z+UCXNCfGoF7X6ylXQobhpkkfRqerS2Qz6W2bY= 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=uAgo2sNl; 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="uAgo2sNl" Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 50H90BR2025666; Fri, 17 Jan 2025 08:07:27 -0500 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=0qjdp CTiuKb+rbyqutpJ6PrzQFBzs0qhCp/xkP66qsU=; b=uAgo2sNl2q8nZh8i0EJSM 0G823rX7S7zIQN4H48XGI30t3gEAiNMr5BfhNSC1gsH1R5YaLdBBE51dOxrkAY4H 1ieokHvPB07p4hh5H3KfeBCnHI1LSgabztwf7/ttKdjWEdgznokyksxTV3VrlI3U bICdNofk6wStkfO6a26RsWew53CbWoe2YJBnJzV6kxG9m5x2VTj0VYRMlMyVY6Kg 1RxZ2ykxPSE4z+/cSVmnAPaJASmyVRCduUKCmMbsKLrCHUw34gg9MZYhA/Avbh7p oryiXqRFcgVSw5k8L5/0ciPLDOSId6C3CfuyS9nrYBYu8m2md2z5hfJfTUz6s+ab w== Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 447m6nryjy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 17 Jan 2025 08:07:27 -0500 (EST) Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 50HD7QrZ027835 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 17 Jan 2025 08:07:26 -0500 Received: from ASHBMBX9.ad.analog.com (10.64.17.10) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.14; Fri, 17 Jan 2025 08:07:26 -0500 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; Fri, 17 Jan 2025 08:07:26 -0500 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.159]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 50HD764n013564; Fri, 17 Jan 2025 08:07:18 -0500 From: Antoniu Miclaus To: , , , , , , CC: Antoniu Miclaus Subject: [PATCH v10 5/8] iio: adc: adi-axi-adc: set data format Date: Fri, 17 Jan 2025 15:06:59 +0200 Message-ID: <20250117130702.22588-6-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250117130702.22588-1-antoniu.miclaus@analog.com> References: <20250117130702.22588-1-antoniu.miclaus@analog.com> 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: DNPQ1mrJm-k-ddY7p27GpTO1oym1tO9w X-Proofpoint-ORIG-GUID: DNPQ1mrJm-k-ddY7p27GpTO1oym1tO9w X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-01-17_05,2025-01-16_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 bulkscore=0 spamscore=0 suspectscore=0 mlxlogscore=999 adultscore=0 phishscore=0 mlxscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2501170106 Add support for selecting the data format within the AXI ADC ip. Signed-off-by: Antoniu Miclaus Reviewed-by: Nuno Sa --- no changes in v10. drivers/iio/adc/adi-axi-adc.c | 46 +++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index d2e1dc63775c..3c213ca5ff8e 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -45,6 +45,12 @@ #define ADI_AXI_ADC_REG_CTRL 0x0044 #define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1) +#define ADI_AXI_ADC_REG_CNTRL_3 0x004c +#define AD485X_CNTRL_3_PACKET_FORMAT_MSK GENMASK(1, 0) +#define AD485X_PACKET_FORMAT_20BIT 0x0 +#define AD485X_PACKET_FORMAT_24BIT 0x1 +#define AD485X_PACKET_FORMAT_32BIT 0x2 + #define ADI_AXI_ADC_REG_DRP_STATUS 0x0074 #define ADI_AXI_ADC_DRP_LOCKED BIT(17) @@ -312,6 +318,45 @@ static int axi_adc_interface_type_get(struct iio_backend *back, return 0; } +static int axi_adc_data_size_set(struct iio_backend *back, unsigned int size) +{ + struct adi_axi_adc_state *st = iio_backend_get_priv(back); + unsigned int val; + + switch (size) { + /* + * There are two different variants of the AXI AD485X IP block, a 16-bit + * and a 20-bit variant. + * The 0x0 value (AD485X_PACKET_FORMAT_20BIT) is corresponding also to + * the 16-bit variant of the IP block. + */ + case 16: + case 20: + val = AD485X_PACKET_FORMAT_20BIT; + break; + case 24: + val = AD485X_PACKET_FORMAT_24BIT; + break; + /* + * The 0x2 (AD485X_PACKET_FORMAT_32BIT) corresponds only to the 20-bit + * variant of the IP block. Setting this value properly is ensured by + * the upper layers of the drivers calling the axi-adc functions. + * Also, for 16-bit IP block, the 0x2 (AD485X_PACKET_FORMAT_32BIT) + * value is handled as maximum size available which is 24-bit for this + * configuration. + */ + case 32: + val = AD485X_PACKET_FORMAT_32BIT; + break; + default: + return -EINVAL; + } + + return regmap_update_bits(st->regmap, ADI_AXI_ADC_REG_CNTRL_3, + AD485X_CNTRL_3_PACKET_FORMAT_MSK, + FIELD_PREP(AD485X_CNTRL_3_PACKET_FORMAT_MSK, val)); +} + static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, struct iio_dev *indio_dev) { @@ -360,6 +405,7 @@ static const struct iio_backend_ops adi_axi_adc_ops = { .test_pattern_set = axi_adc_test_pattern_set, .chan_status = axi_adc_chan_status, .interface_type_get = axi_adc_interface_type_get, + .data_size_set = axi_adc_data_size_set, .debugfs_reg_access = iio_backend_debugfs_ptr(axi_adc_reg_access), .debugfs_print_chan_status = iio_backend_debugfs_ptr(axi_adc_debugfs_print_chan_status), };