From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Nuno Sa <Nuno.Sa@analog.com>,
Miquel Raynal <miquel.raynal@bootlin.com>
Subject: [PATCH v4 11/16] iio: adc: max1027: Separate the IRQ handler from the read logic
Date: Tue, 21 Sep 2021 13:54:03 +0200 [thread overview]
Message-ID: <20210921115408.66711-12-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20210921115408.66711-1-miquel.raynal@bootlin.com>
Create a max1027_read_scan() helper which will make clearer the future IRQ
handler updates (no functional change).
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/iio/adc/max1027.c | 23 +++++++++++++++++++----
1 file changed, 19 insertions(+), 4 deletions(-)
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index c7663e5dd38a..a044f4b598e0 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -439,22 +439,37 @@ static int max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
return 0;
}
-static irqreturn_t max1027_trigger_handler(int irq, void *private)
+static int max1027_read_scan(struct iio_dev *indio_dev)
{
- struct iio_poll_func *pf = private;
- struct iio_dev *indio_dev = pf->indio_dev;
struct max1027_state *st = iio_priv(indio_dev);
unsigned int scanned_chans;
+ int ret;
scanned_chans = fls(*indio_dev->active_scan_mask) - 1;
if (*indio_dev->active_scan_mask & MAX1X27_SCAN_MASK_TEMP)
scanned_chans++;
/* fill buffer with all channel */
- spi_read(st->spi, st->buffer, scanned_chans * 2);
+ ret = spi_read(st->spi, st->buffer, scanned_chans * 2);
+ if (ret < 0)
+ return ret;
iio_push_to_buffers(indio_dev, st->buffer);
+ return 0;
+}
+
+static irqreturn_t max1027_trigger_handler(int irq, void *private)
+{
+ struct iio_poll_func *pf = private;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ int ret;
+
+ ret = max1027_read_scan(indio_dev);
+ if (ret)
+ dev_err(&indio_dev->dev,
+ "Cannot read scanned values (%d)\n", ret);
+
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
--
2.27.0
next prev parent reply other threads:[~2021-09-21 11:54 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-21 11:53 [PATCH v4 00/16] Bring external triggers support to MAX1027-like ADCs Miquel Raynal
2021-09-21 11:53 ` [PATCH v4 01/16] iio: adc: max1027: Fix style Miquel Raynal
2021-09-21 11:53 ` [PATCH v4 02/16] iio: adc: max1027: Drop extra warning message Miquel Raynal
2021-09-21 11:53 ` [PATCH v4 03/16] iio: adc: max1027: Drop useless debug messages Miquel Raynal
2021-09-21 11:53 ` [PATCH v4 04/16] iio: adc: max1027: Minimize the number of converted channels Miquel Raynal
2021-09-21 11:53 ` [PATCH v4 05/16] iio: adc: max1027: Rename a helper Miquel Raynal
2021-09-21 11:53 ` [PATCH v4 06/16] iio: adc: max1027: Create a helper to enable/disable the cnvst trigger Miquel Raynal
2021-09-21 11:53 ` [PATCH v4 07/16] iio: adc: max1027: Simplify the _set_trigger_state() helper Miquel Raynal
2021-09-21 11:54 ` [PATCH v4 08/16] iio: adc: max1027: Ensure a default cnvst trigger configuration Miquel Raynal
2021-09-21 11:54 ` [PATCH v4 09/16] iio: adc: max1027: Create a helper to configure the channels to scan Miquel Raynal
2021-09-21 11:54 ` [PATCH v4 10/16] iio: adc: max1027: Prevent single channel accesses during buffer reads Miquel Raynal
2021-09-21 11:54 ` Miquel Raynal [this message]
2021-09-21 11:54 ` [PATCH v4 12/16] iio: adc: max1027: Introduce an end of conversion helper Miquel Raynal
2021-09-21 11:54 ` [PATCH v4 13/16] iio: adc: max1027: Stop requesting a threaded IRQ Miquel Raynal
2021-09-21 11:54 ` [PATCH v4 14/16] iio: adc: max1027: Use the EOC IRQ when populated for single reads Miquel Raynal
2021-09-26 14:36 ` Jonathan Cameron
2021-09-27 14:30 ` Miquel Raynal
2021-09-21 11:54 ` [PATCH v4 15/16] iio: adc: max1027: Allow all kind of triggers to be used Miquel Raynal
2021-09-21 11:54 ` [PATCH v4 16/16] iio: adc: max1027: Don't reject external triggers when there is no IRQ Miquel Raynal
2021-09-26 14:38 ` [PATCH v4 00/16] Bring external triggers support to MAX1027-like ADCs Jonathan Cameron
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