From patchwork Wed Jan 10 17:22:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Petre Rodan X-Patchwork-Id: 13516325 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 566DB4D12B; Wed, 10 Jan 2024 17:23:23 +0000 (UTC) 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="Ab8AWGqI" Received: from localhost.localdomain (unknown [188.24.94.216]) (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 E2D9B2997DA; Wed, 10 Jan 2024 17:23:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=subdimension.ro; s=skycaves; t=1704907394; bh=qsDFAv93tu0XrFFcOWZhPLu9VlWsI+eQCLQ6AKV/vgw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Ab8AWGqIod2UVn0PU6YsPL9vvuD3qMkhpVANQ0PjIzBItuIfQsorp4ubOErYrvAC3 0wJL50jUOR0QJs/SwWeHdzb/KvxBO6Gga97UiN2dPYO4PRoOZKwN3AuGv4oxm+pbLe FdUARi04f1kbMx5AW9Qzv+jbwokEzG41uwbbSzXk= From: Petre Rodan To: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Petre Rodan , Jonathan Cameron , Lars-Peter Clausen Subject: [PATCH 5/6] iio: pressure: hsc030pa add triggered buffer Date: Wed, 10 Jan 2024 19:22:40 +0200 Message-ID: <20240110172306.31273-6-petre.rodan@subdimension.ro> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20240110172306.31273-1-petre.rodan@subdimension.ro> References: <20240110172306.31273-1-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 --- drivers/iio/pressure/hsc030pa.c | 42 +++++++++++++++++++++++++++++++++ drivers/iio/pressure/hsc030pa.h | 2 +- 2 files changed, 43 insertions(+), 1 deletion(-) -- 2.41.0 diff --git a/drivers/iio/pressure/hsc030pa.c b/drivers/iio/pressure/hsc030pa.c index 7e3f74d53b47..3faa0fd42201 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 +300,23 @@ 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) { + iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer, + iio_get_time_ns(indio_dev)); + } + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + /* * IIO ABI expects * value = (conv + offset) * scale @@ -382,13 +402,30 @@ 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, + .shift = 0, + .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 +522,11 @@ 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..6c635c42d85d 100644 --- a/drivers/iio/pressure/hsc030pa.h +++ b/drivers/iio/pressure/hsc030pa.h @@ -56,7 +56,7 @@ struct hsc_data { s32 p_scale_dec; s64 p_offset; s32 p_offset_dec; - u8 buffer[HSC_REG_MEASUREMENT_RD_SIZE] __aligned(IIO_DMA_MINALIGN); + u8 buffer[16] __aligned(IIO_DMA_MINALIGN); }; struct hsc_chip_data {