From patchwork Mon Jan 27 10:57:24 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Miclaus, Antoniu" X-Patchwork-Id: 13951233 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 AADCF1FF1CF; Mon, 27 Jan 2025 10:57:53 +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=1737975475; cv=none; b=sH0xLjMmcOh6ae/p6s02EqmRJb94sYDZk1xbGbyJExvDNhvnO5oYAOGkHpeA8njywzO3Bsv2S2vFDnDqzTf3HDZeR0D+Mohnzwv43INV7uniSgVio5YGF17v+ti8V5GApoRMI/84rn9oifDpUTrRgMHBjXThFiXe75P8lHBi/WY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737975475; c=relaxed/simple; bh=slxdLzEO8imzhAY0qCXiGRFH+HnebnedzYP/zoggsjo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=NnCAxugecqh+RIlfAS4w16aeT0lYF2Vw+n0omqG64BguMjS1xPYxrB+PhQ8+5Az0IUQY8TxoR0dM+yEqd5qTzncLW1QImtI8V7H8mxpi7TgvvfvRK9MVWW5wDEAZZOahQ4WEAgXuiXBO/jFaq6eh5PsYZ7bGq9w3cERuppjhKUA= 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=kZu4tEoW; 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="kZu4tEoW" Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 50R9qTZW005923; Mon, 27 Jan 2025 05:57:51 -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=zQgRR G6vaAzOlZarOh6oMCpUAExDg+w5UQfaY/VDYzs=; b=kZu4tEoWo5yWDc5a3PfTB D8auZfquhugvxNaeJPnLwfrT6AsrVfIf2lgPCCBN14U/bYt21ofA4m6MGI74Db5p BGz50d3yVol9gw1sGHxvWzzV8ObQ5al+Kcd9P63hAE+BVtW4dHMbLLC+Iei4Hi12 67vHNze0gYv9XYCEUqBtzNqZTOBscV+YtLhGL5JPYqL0L97XstcL9WZa6VGfNj8z r1MB/M5x3mLe1OP1nIwus684DBYaPithIcXM0kJl40BAL/8P9uktP7ttRXpS1GKp BcFmdIMpqAz5+YPGPJPWZygllMV1VfrJEQUnULymnYqG84d/7vFJ9ko8jYkgcYkH Q== Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 44e2n11bgf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Jan 2025 05:57:51 -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 50RAvoBY001781 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 27 Jan 2025 05:57:50 -0500 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) 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; Mon, 27 Jan 2025 05:57:49 -0500 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.986.14 via Frontend Transport; Mon, 27 Jan 2025 05:57:49 -0500 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.165]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 50RAvUTC018078; Mon, 27 Jan 2025 05:57:44 -0500 From: Antoniu Miclaus To: , , , , , , CC: Antoniu Miclaus Subject: [PATCH v11 6/8] iio: adc: adi-axi-adc: add oversampling Date: Mon, 27 Jan 2025 12:57:24 +0200 Message-ID: <20250127105726.6314-7-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250127105726.6314-1-antoniu.miclaus@analog.com> References: <20250127105726.6314-1-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: tVc8cnldwKmdUWgvBoXrkHg_cwEc7cM5 X-Proofpoint-ORIG-GUID: tVc8cnldwKmdUWgvBoXrkHg_cwEc7cM5 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=2025-01-27_04,2025-01-27_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 impostorscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 suspectscore=0 mlxscore=0 clxscore=1015 mlxlogscore=999 phishscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2501270088 Add support for enabling/disabling oversampling. Signed-off-by: Antoniu Miclaus --- changes in v11: - add comment. drivers/iio/adc/adi-axi-adc.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c index 3c213ca5ff8e..8f65f968e537 100644 --- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -46,6 +46,7 @@ #define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1) #define ADI_AXI_ADC_REG_CNTRL_3 0x004c +#define AD485X_CNTRL_3_OS_EN_MSK BIT(2) #define AD485X_CNTRL_3_PACKET_FORMAT_MSK GENMASK(1, 0) #define AD485X_PACKET_FORMAT_20BIT 0x0 #define AD485X_PACKET_FORMAT_24BIT 0x1 @@ -357,6 +358,28 @@ static int axi_adc_data_size_set(struct iio_backend *back, unsigned int size) FIELD_PREP(AD485X_CNTRL_3_PACKET_FORMAT_MSK, val)); } +static int axi_adc_oversampling_ratio_set(struct iio_backend *back, + unsigned int ratio) +{ + struct adi_axi_adc_state *st = iio_backend_get_priv(back); + + /* The current state of the function enables or disables the + * oversampling in REG_CNTRL_3 register. A ratio equal to 1 implies no + * oversampling, while a value greater than 1 implies oversampling being + * enabled. + */ + switch (ratio) { + case 0: + return -EINVAL; + case 1: + return regmap_clear_bits(st->regmap, ADI_AXI_ADC_REG_CNTRL_3, + AD485X_CNTRL_3_OS_EN_MSK); + default: + return regmap_set_bits(st->regmap, ADI_AXI_ADC_REG_CNTRL_3, + AD485X_CNTRL_3_OS_EN_MSK); + } +} + static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back, struct iio_dev *indio_dev) { @@ -406,6 +429,7 @@ static const struct iio_backend_ops adi_axi_adc_ops = { .chan_status = axi_adc_chan_status, .interface_type_get = axi_adc_interface_type_get, .data_size_set = axi_adc_data_size_set, + .oversampling_ratio_set = axi_adc_oversampling_ratio_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), };