From patchwork Tue Nov 26 23:15:27 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcelo Schmitt X-Patchwork-Id: 13886390 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 545AB199935; Tue, 26 Nov 2024 23:16:15 +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=1732662978; cv=none; b=GMetHZxGIiR/+b/r+pvdmw11rKF1WQ5tZ1tKNJShdd4lmVNe6WTfg2FxlzWS6lse8PFhaeyUjtyE8/OJ+15SfM/WAl92De/r80h3c4zWXbH0ATPuyzHKlkGWCklzoJ22lizNN3ffpCLBlUreEGze+LjXg0UuYx7/65VffX6y71Y= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732662978; c=relaxed/simple; bh=LHfl5uf4OUxuRyZMtrgPR7+lm2rc4DSaGKM1rtAFcWE=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=QykuUpXXgSbCtCzbImrSQ2d2IhEXWblk6BJlz9dFXBzfpJfd4X7JpR7zJm1q0gOs8dd0ZS68xgqHrwz6Bs61U1io5QYwMJN2GowcLkYXvq3LrVdyEcDYh/Nu3uD87xdri++TzUnKZ7pc1yIWtRitnYLPPVm93nDLEkj4/7Aw4KA= 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=jlNYVX0c; 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="jlNYVX0c" 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 4AQM7sAE007911; Tue, 26 Nov 2024 18:15:54 -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=dWWsa OTW4pk8/fGx3aVmoRzEo9LkdzNQxdEyeNyVyoE=; b=jlNYVX0c2uFiCfohbDvtM s/WvacHEb7jHYN0fVVYuw1XhSolAJ9dePd9dr6FmCVb3RWb979Ol4pxJCU3HaQ93 1kvDuDFXjjvhty+8U1zbqeNCJn4Btf4wBSkUvmD/fxwp1L+ZRZ+vcmoPIfzE9BCS AWTMLNz29JDg5zMCI3m2FHahohg+l87t+owRwBILce8FuKxZWllXTAW51WYVY3D9 4gkE9zxNqv7XkovdRRJKw+6sHpfYvPF3P75D803GTd1vu7p0QUqdRLg4DONqeu+F r3FUy2bWUOVs+sBvwVOdM+fHAuRhCYWv04SlkhIzjiB2i5WIe9YrWon7XWvCi9hh w== Received: from nwd2mta4.analog.com ([137.71.173.58]) by mx0b-00128a01.pphosted.com (PPS) with ESMTPS id 435puwg7mc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 26 Nov 2024 18:15:54 -0500 (EST) Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta4.analog.com (8.14.7/8.14.7) with ESMTP id 4AQNFrqN037082 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 26 Nov 2024 18:15:53 -0500 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, 26 Nov 2024 18:15:53 -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; Tue, 26 Nov 2024 18:15:53 -0500 Received: from work.ad.analog.com (HYB-hERzalRezfV.ad.analog.com [10.65.205.9]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 4AQNFTqJ017897; Tue, 26 Nov 2024 18:15:33 -0500 From: Marcelo Schmitt To: , , CC: , , , , , , , , David Lechner Subject: [PATCH v4 2/4] iio: adc: ad4000: Add timestamp channel Date: Tue, 26 Nov 2024 20:15:27 -0300 Message-ID: <5ef3a87991ead98fe9469baac1cec098a4c7f928.1732660478.git.marcelo.schmitt@analog.com> X-Mailer: git-send-email 2.39.2 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-ORIG-GUID: yjAnKoMk2uOvevnbKnyucmBgU-lX6Kqh X-Proofpoint-GUID: yjAnKoMk2uOvevnbKnyucmBgU-lX6Kqh X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 bulkscore=0 suspectscore=0 malwarescore=0 priorityscore=1501 lowpriorityscore=0 mlxscore=0 phishscore=0 mlxlogscore=999 spamscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2411260187 The ADC data is pushed to the IIO buffer along with timestamp but no timestamp channel was provided to retried the time data. Add a timestamp channel to provide sample capture time. Suggested-by: David Lechner Reviewed-by: David Lechner Signed-off-by: Marcelo Schmitt --- drivers/iio/adc/ad4000.c | 98 +++++++++++++++++++++++----------------- 1 file changed, 56 insertions(+), 42 deletions(-) diff --git a/drivers/iio/adc/ad4000.c b/drivers/iio/adc/ad4000.c index b3b82535f5c1..21731c4d31ee 100644 --- a/drivers/iio/adc/ad4000.c +++ b/drivers/iio/adc/ad4000.c @@ -49,6 +49,7 @@ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ BIT(IIO_CHAN_INFO_SCALE), \ .info_mask_separate_available = _reg_access ? BIT(IIO_CHAN_INFO_SCALE) : 0,\ + .scan_index = 0, \ .scan_type = { \ .sign = _sign, \ .realbits = _real_bits, \ @@ -62,6 +63,12 @@ __AD4000_DIFF_CHANNEL((_sign), (_real_bits), \ ((_real_bits) > 16 ? 32 : 16), (_reg_access)) +#define AD4000_DIFF_CHANNELS(_sign, _real_bits, _reg_access) \ +{ \ + AD4000_DIFF_CHANNEL(_sign, _real_bits, _reg_access), \ + IIO_CHAN_SOFT_TIMESTAMP(1) \ +} + #define __AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _storage_bits, _reg_access)\ { \ .type = IIO_VOLTAGE, \ @@ -71,6 +78,7 @@ BIT(IIO_CHAN_INFO_SCALE) | \ BIT(IIO_CHAN_INFO_OFFSET), \ .info_mask_separate_available = _reg_access ? BIT(IIO_CHAN_INFO_SCALE) : 0,\ + .scan_index = 0, \ .scan_type = { \ .sign = _sign, \ .realbits = _real_bits, \ @@ -84,6 +92,12 @@ __AD4000_PSEUDO_DIFF_CHANNEL((_sign), (_real_bits), \ ((_real_bits) > 16 ? 32 : 16), (_reg_access)) +#define AD4000_PSEUDO_DIFF_CHANNELS(_sign, _real_bits, _reg_access) \ +{ \ + AD4000_PSEUDO_DIFF_CHANNEL(_sign, _real_bits, _reg_access), \ + IIO_CHAN_SOFT_TIMESTAMP(1) \ +} + static const char * const ad4000_power_supplies[] = { "vdd", "vio" }; @@ -110,106 +124,106 @@ static const int ad4000_gains[] = { struct ad4000_chip_info { const char *dev_name; - struct iio_chan_spec chan_spec; - struct iio_chan_spec reg_access_chan_spec; + struct iio_chan_spec chan_spec[2]; + struct iio_chan_spec reg_access_chan_spec[2]; bool has_hardware_gain; }; static const struct ad4000_chip_info ad4000_chip_info = { .dev_name = "ad4000", - .chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0), - .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 1), + .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 1), }; static const struct ad4000_chip_info ad4001_chip_info = { .dev_name = "ad4001", - .chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 16, 1), }; static const struct ad4000_chip_info ad4002_chip_info = { .dev_name = "ad4002", - .chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 0), - .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 1), + .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 0), + .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 1), }; static const struct ad4000_chip_info ad4003_chip_info = { .dev_name = "ad4003", - .chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), }; static const struct ad4000_chip_info ad4004_chip_info = { .dev_name = "ad4004", - .chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0), - .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 1), + .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 1), }; static const struct ad4000_chip_info ad4005_chip_info = { .dev_name = "ad4005", - .chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 16, 1), }; static const struct ad4000_chip_info ad4006_chip_info = { .dev_name = "ad4006", - .chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 0), - .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 1), + .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 0), + .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 1), }; static const struct ad4000_chip_info ad4007_chip_info = { .dev_name = "ad4007", - .chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), }; static const struct ad4000_chip_info ad4008_chip_info = { .dev_name = "ad4008", - .chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 0), - .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 16, 1), + .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 0), + .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 16, 1), }; static const struct ad4000_chip_info ad4010_chip_info = { .dev_name = "ad4010", - .chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 0), - .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNEL('u', 18, 1), + .chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 0), + .reg_access_chan_spec = AD4000_PSEUDO_DIFF_CHANNELS('u', 18, 1), }; static const struct ad4000_chip_info ad4011_chip_info = { .dev_name = "ad4011", - .chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), }; static const struct ad4000_chip_info ad4020_chip_info = { .dev_name = "ad4020", - .chan_spec = AD4000_DIFF_CHANNEL('s', 20, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 20, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 20, 1), }; static const struct ad4000_chip_info ad4021_chip_info = { .dev_name = "ad4021", - .chan_spec = AD4000_DIFF_CHANNEL('s', 20, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 20, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 20, 1), }; static const struct ad4000_chip_info ad4022_chip_info = { .dev_name = "ad4022", - .chan_spec = AD4000_DIFF_CHANNEL('s', 20, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 20, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 20, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 20, 1), }; static const struct ad4000_chip_info adaq4001_chip_info = { .dev_name = "adaq4001", - .chan_spec = AD4000_DIFF_CHANNEL('s', 16, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 16, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 16, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 16, 1), .has_hardware_gain = true, }; static const struct ad4000_chip_info adaq4003_chip_info = { .dev_name = "adaq4003", - .chan_spec = AD4000_DIFF_CHANNEL('s', 18, 0), - .reg_access_chan_spec = AD4000_DIFF_CHANNEL('s', 18, 1), + .chan_spec = AD4000_DIFF_CHANNELS('s', 18, 0), + .reg_access_chan_spec = AD4000_DIFF_CHANNELS('s', 18, 1), .has_hardware_gain = true, }; @@ -591,7 +605,7 @@ static int ad4000_probe(struct spi_device *spi) switch (st->sdi_pin) { case AD4000_SDI_MOSI: indio_dev->info = &ad4000_reg_access_info; - indio_dev->channels = &chip->reg_access_chan_spec; + indio_dev->channels = chip->reg_access_chan_spec; /* * In "3-wire mode", the ADC SDI line must be kept high when @@ -603,7 +617,7 @@ static int ad4000_probe(struct spi_device *spi) if (ret < 0) return ret; - ret = ad4000_prepare_3wire_mode_message(st, indio_dev->channels); + ret = ad4000_prepare_3wire_mode_message(st, &indio_dev->channels[0]); if (ret) return ret; @@ -614,16 +628,16 @@ static int ad4000_probe(struct spi_device *spi) break; case AD4000_SDI_VIO: indio_dev->info = &ad4000_info; - indio_dev->channels = &chip->chan_spec; - ret = ad4000_prepare_3wire_mode_message(st, indio_dev->channels); + indio_dev->channels = chip->chan_spec; + ret = ad4000_prepare_3wire_mode_message(st, &indio_dev->channels[0]); if (ret) return ret; break; case AD4000_SDI_CS: indio_dev->info = &ad4000_info; - indio_dev->channels = &chip->chan_spec; - ret = ad4000_prepare_4wire_mode_message(st, indio_dev->channels); + indio_dev->channels = chip->chan_spec; + ret = ad4000_prepare_4wire_mode_message(st, &indio_dev->channels[0]); if (ret) return ret; @@ -637,7 +651,7 @@ static int ad4000_probe(struct spi_device *spi) } indio_dev->name = chip->dev_name; - indio_dev->num_channels = 1; + indio_dev->num_channels = 2; ret = devm_mutex_init(dev, &st->lock); if (ret) @@ -658,7 +672,7 @@ static int ad4000_probe(struct spi_device *spi) } } - ad4000_fill_scale_tbl(st, indio_dev->channels); + ad4000_fill_scale_tbl(st, &indio_dev->channels[0]); ret = devm_iio_triggered_buffer_setup(dev, indio_dev, &iio_pollfunc_store_time,