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 v2 10/16] iio: adc: max1027: Create a helper to configure the channels to scan
Date: Thu, 2 Sep 2021 23:14:31 +0200 [thread overview]
Message-ID: <20210902211437.503623-11-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20210902211437.503623-1-miquel.raynal@bootlin.com>
These bits are meant to be reused for triggered buffers setup.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
drivers/iio/adc/max1027.c | 27 +++++++++++++++------------
1 file changed, 15 insertions(+), 12 deletions(-)
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 476b90f12330..f4cb5c75604b 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -257,6 +257,19 @@ struct max1027_state {
u8 reg ____cacheline_aligned;
};
+/* Scan from chan 0 to the highest requested channel. Include temperature on demand. */
+static int max1027_configure_chans_and_start(struct iio_dev *indio_dev)
+{
+ struct max1027_state *st = iio_priv(indio_dev);
+
+ st->reg = MAX1027_CONV_REG | MAX1027_SCAN_0_N;
+ st->reg |= MAX1027_CHAN(fls(*indio_dev->active_scan_mask) - 2);
+ if (*indio_dev->active_scan_mask & MAX1X27_SCAN_MASK_TEMP)
+ st->reg |= MAX1027_TEMP;
+
+ return spi_write(st->spi, &st->reg, 1);
+}
+
static int max1027_enable_trigger(struct iio_dev *indio_dev, bool enable)
{
struct max1027_state *st = iio_priv(indio_dev);
@@ -388,7 +401,6 @@ static int max1027_validate_trigger(struct iio_dev *indio_dev,
static int max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
{
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
- struct max1027_state *st = iio_priv(indio_dev);
int ret;
/*
@@ -402,17 +414,8 @@ static int max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
return ret;
if (state) {
- /*
- * Scan from chan 0 to the highest requested channel.
- * Include temperature on demand.
- */
- st->reg = MAX1027_CONV_REG | MAX1027_SCAN_0_N;
- st->reg |= MAX1027_CHAN(fls(*indio_dev->active_scan_mask) - 2);
- if (*indio_dev->active_scan_mask & MAX1X27_SCAN_MASK_TEMP)
- st->reg |= MAX1027_TEMP;
-
- ret = spi_write(st->spi, &st->reg, 1);
- if (ret < 0)
+ ret = max1027_configure_chans_and_start(indio_dev);
+ if (ret)
return ret;
}
--
2.27.0
next prev parent reply other threads:[~2021-09-02 21:15 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-02 21:14 [PATCH v2 00/16] Bring external triggers support to MAX1027-like ADCs Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 01/16] iio: adc: max1027: Fix style Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 02/16] iio: adc: max1027: Drop extra warning message Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 03/16] iio: adc: max1027: Drop useless debug messages Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 04/16] iio: adc: max1027: Avoid device managed allocators for DMA purposes Miquel Raynal
2021-09-05 15:26 ` Jonathan Cameron
2021-09-02 21:14 ` [PATCH v2 05/16] iio: adc: max1027: Minimize the number of converted channels Miquel Raynal
2021-09-05 15:34 ` Jonathan Cameron
2021-09-15 9:46 ` Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 06/16] iio: adc: max1027: Rename a helper Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 07/16] iio: adc: max1027: Create a helper to enable/disable the cnvst trigger Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 08/16] iio: adc: max1027: Simplify the _set_trigger_state() helper Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 09/16] iio: adc: max1027: Ensure a default cnvst trigger configuration Miquel Raynal
2021-09-02 21:14 ` Miquel Raynal [this message]
2021-09-02 21:14 ` [PATCH v2 11/16] iio: adc: max1027: Prevent single channel accesses during buffer reads Miquel Raynal
2021-09-05 15:38 ` Jonathan Cameron
2021-09-02 21:14 ` [PATCH v2 12/16] iio: adc: max1027: Separate the IRQ handler from the read logic Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 13/16] iio: adc: max1027: Introduce an end of conversion helper Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 14/16] iio: adc: max1027: Don't just sleep when the EOC interrupt is available Miquel Raynal
2021-09-06 9:38 ` Sa, Nuno
2021-09-15 9:55 ` Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 15/16] iio: adc: max1027: Add support for external triggers Miquel Raynal
2021-09-05 16:10 ` Jonathan Cameron
2021-09-06 9:53 ` Sa, Nuno
2021-09-15 15:45 ` Miquel Raynal
2021-09-18 17:39 ` Jonathan Cameron
2021-09-20 10:47 ` Miquel Raynal
2021-09-15 10:18 ` Miquel Raynal
2021-09-18 17:13 ` Jonathan Cameron
2021-09-20 8:37 ` Miquel Raynal
2021-09-20 17:43 ` Jonathan Cameron
2021-09-21 8:11 ` Miquel Raynal
2021-09-02 21:14 ` [PATCH v2 16/16] iio: adc: max1027: Don't reject external triggers when there is no IRQ Miquel Raynal
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