From patchwork Sat Jan 27 16:03:58 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petre Rodan X-Patchwork-Id: 13534122 Received: from mail.subdimension.ro (skycaves.subdimension.ro [172.104.132.142]) (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 90E1C2942C; Sat, 27 Jan 2024 16:04:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=172.104.132.142 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706371463; cv=none; b=VLs2Omsh0o4lVVoNx6kI+H38glOZEm19nH6fCHFDNBBVifQcgGdbmZJOOmXNjmvpEtTeh3Bvhu2rXv77Sbtk0W2uA716c3xyxXXH+iXPNjPZB/EEK3DSkov5lxYJzPsS9a1fLMyZR8MSxkVhL12o1aPla+xb7tmgW4OtrNIWNS0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706371463; c=relaxed/simple; bh=uNZlNH68NOdUs670gUg9HFrHubxtW5W3+AmCbfDPYuM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VJ6oHeto8cB2SRs9zi0q6nqsdIbFqUFUTuafSYfVoOnuur4WfvMIHs4KFV1BDOfhKL1eAk7sNe7+o16e9pqDLG2uurqjEpfSSCxlBrP9R6Tm8mAmyOp/eeKNxsAwfS1ye6PDviYGVVIxOvhYfuAns1cqTS2mWV57m0TybmiOOho= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=subdimension.ro; spf=pass smtp.mailfrom=subdimension.ro; dkim=pass (1024-bit key) header.d=subdimension.ro header.i=@subdimension.ro header.b=kvDN6o1x; arc=none smtp.client-ip=172.104.132.142 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=subdimension.ro Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=subdimension.ro Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=subdimension.ro header.i=@subdimension.ro header.b="kvDN6o1x" Received: from localhost.localdomain (unknown [188.24.80.170]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mail.subdimension.ro (Postfix) with ESMTPSA id F262E293A97; Sat, 27 Jan 2024 16:04:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=subdimension.ro; s=skycaves; t=1706371453; bh=uNZlNH68NOdUs670gUg9HFrHubxtW5W3+AmCbfDPYuM=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=kvDN6o1xB6Wxq1AT7VFZbgxjX5ROejk/V6uzeRrvVQivZDZfpFEhC3jg1pb0bXnR5 XV7FPaolSgR14vAT0sgeFOXWfAlKex1BVARPQF1ffJcInh/DDbFS6caoIyUAHQyFdH 41UL6EBdeCqVNJWFN5dLJop+eh0+VwD1DMf6kyLY= From: Petre Rodan To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Petre Rodan , Jonathan Cameron , Lars-Peter Clausen Subject: [PATCH v2 4/4] iio: pressure: hsc030pa add triggered buffer Date: Sat, 27 Jan 2024 18:03:58 +0200 Message-ID: <20240127160405.19696-5-petre.rodan@subdimension.ro> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240127160405.19696-1-petre.rodan@subdimension.ro> References: <20240127160405.19696-1-petre.rodan@subdimension.ro> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add triggered buffer feature. Signed-off-by: Petre Rodan --- v1 -> v2 add Kconfig select for IIO_*BUFFER a few changes based on Jonathan's review drivers/iio/pressure/Kconfig | 2 ++ drivers/iio/pressure/hsc030pa.c | 47 +++++++++++++++++++++++++++++++++ drivers/iio/pressure/hsc030pa.h | 4 +++ 3 files changed, 53 insertions(+) diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig index 5da7931dc537..3ad38506028e 100644 --- a/drivers/iio/pressure/Kconfig +++ b/drivers/iio/pressure/Kconfig @@ -114,6 +114,8 @@ config HSC030PA depends on (I2C || SPI_MASTER) select HSC030PA_I2C if I2C select HSC030PA_SPI if SPI_MASTER + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER help Say Y here to build support for the Honeywell TruStability HSC and SSC pressure and temperature sensor series. diff --git a/drivers/iio/pressure/hsc030pa.c b/drivers/iio/pressure/hsc030pa.c index 7e3f74d53b47..f8bddcdf5056 100644 --- a/drivers/iio/pressure/hsc030pa.c +++ b/drivers/iio/pressure/hsc030pa.c @@ -22,8 +22,11 @@ #include #include +#include #include #include +#include +#include #include @@ -297,6 +300,29 @@ static int hsc_get_measurement(struct hsc_data *data) return 0; } +static irqreturn_t hsc_trigger_handler(int irq, void *private) +{ + struct iio_poll_func *pf = private; + struct iio_dev *indio_dev = pf->indio_dev; + struct hsc_data *data = iio_priv(indio_dev); + int ret; + + ret = hsc_get_measurement(data); + if (ret) + goto error; + + memcpy(&data->scan.chan[0], &data->buffer, 2); + memcpy(&data->scan.chan[1], &data->buffer[2], 2); + + iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, + iio_get_time_ns(indio_dev)); + +error: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + /* * IIO ABI expects * value = (conv + offset) * scale @@ -382,13 +408,29 @@ static const struct iio_chan_spec hsc_channels[] = { .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), + .scan_index = 0, + .scan_type = { + .sign = 'u', + .realbits = 14, + .storagebits = 16, + .endianness = IIO_BE, + }, }, { .type = IIO_TEMP, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), + .scan_index = 1, + .scan_type = { + .sign = 'u', + .realbits = 11, + .storagebits = 16, + .shift = 5, + .endianness = IIO_BE, + }, }, + IIO_CHAN_SOFT_TIMESTAMP(2), }; static const struct iio_info hsc_info = { @@ -485,6 +527,11 @@ int hsc_common_probe(struct device *dev, hsc_recv_fn recv) indio_dev->channels = hsc->chip->channels; indio_dev->num_channels = hsc->chip->num_channels; + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, + hsc_trigger_handler, NULL); + if (ret) + return ret; + return devm_iio_device_register(dev, indio_dev); } EXPORT_SYMBOL_NS(hsc_common_probe, IIO_HONEYWELL_HSC030PA); diff --git a/drivers/iio/pressure/hsc030pa.h b/drivers/iio/pressure/hsc030pa.h index 56dc8e88194b..9b40f46f575f 100644 --- a/drivers/iio/pressure/hsc030pa.h +++ b/drivers/iio/pressure/hsc030pa.h @@ -56,6 +56,10 @@ struct hsc_data { s32 p_scale_dec; s64 p_offset; s32 p_offset_dec; + struct { + __be16 chan[2]; + s64 timestamp __aligned(8); + } scan; u8 buffer[HSC_REG_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN); };