From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Jonathan Cameron <jic23@kernel.org>,
Lars-Peter Clausen <lars@metafoo.de>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
linux-iio@vger.kernel.org, <linux-kernel@vger.kernel.org>,
Miquel Raynal <miquel.raynal@bootlin.com>
Subject: [PATCH 09/16] iio: adc: max1027: Create a helper to configure the channels to scan
Date: Wed, 18 Aug 2021 13:11:32 +0200 [thread overview]
Message-ID: <20210818111139.330636-10-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20210818111139.330636-1-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 | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 4a78c9cbc339..223c9e4abd86 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -236,6 +236,22 @@ struct max1027_state {
u8 reg ____cacheline_aligned;
};
+/* Scan from 0 to the highest requested channel */
+static int max1027_configure_chans_to_scan(struct iio_dev *indio_dev)
+{
+ struct max1027_state *st = iio_priv(indio_dev);
+ int ret;
+
+ /* The temperature could be avoided but it simplifies a bit the logic */
+ st->reg = MAX1027_CONV_REG | MAX1027_SCAN_0_N | MAX1027_TEMP;
+ st->reg |= MAX1027_CHAN(fls(*indio_dev->active_scan_mask) - 2);
+ ret = spi_write(st->spi, &st->reg, 1);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
static int max1027_configure_trigger(struct iio_dev *indio_dev)
{
struct max1027_state *st = iio_priv(indio_dev);
@@ -391,14 +407,8 @@ static int max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
if (ret)
return ret;
- /*
- * Scan from 0 to the highest requested channel. The temperature
- * could be avoided but it simplifies a bit the logic.
- */
- st->reg = MAX1027_CONV_REG | MAX1027_SCAN_0_N | MAX1027_TEMP;
- st->reg |= MAX1027_CHAN(fls(*indio_dev->active_scan_mask) - 2);
- ret = spi_write(st->spi, &st->reg, 1);
- if (ret < 0)
+ ret = max1027_configure_chans_to_scan(indio_dev);
+ if (ret)
return ret;
} else {
/*
--
2.27.0
next prev parent reply other threads:[~2021-08-18 11:12 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 11:11 [PATCH 00/16] Bring software triggers support to MAX1027-like ADCs Miquel Raynal
2021-08-18 11:11 ` [PATCH 01/16] iio: adc: max1027: Fix wrong shift with 12-bit devices Miquel Raynal
2021-08-20 7:02 ` Sa, Nuno
2021-08-30 9:57 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 02/16] iio: adc: max1027: Fix the number of max1X31 channels Miquel Raynal
2021-08-20 7:03 ` Sa, Nuno
2021-08-30 10:00 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 03/16] iio: adc: max1027: Push only the requested samples Miquel Raynal
2021-08-20 7:10 ` Sa, Nuno
2021-08-30 10:07 ` Jonathan Cameron
2021-08-30 10:49 ` Sa, Nuno
2021-08-30 14:29 ` Jonathan Cameron
2021-08-30 15:02 ` Sa, Nuno
2021-09-01 8:12 ` Miquel Raynal
2021-09-04 14:06 ` Jonathan Cameron
2021-09-06 8:59 ` Sa, Nuno
2021-09-06 16:56 ` Jonathan Cameron
2021-09-06 17:34 ` Miquel Raynal
2021-08-30 10:06 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 04/16] iio: adc: max1027: Lower conversion time Miquel Raynal
2021-08-20 7:12 ` Sa, Nuno
2021-08-30 10:10 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 05/16] iio: adc: max1027: Drop extra warning message Miquel Raynal
2021-08-20 7:12 ` Sa, Nuno
2021-08-30 10:12 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 06/16] iio: adc: max1027: Rename a helper Miquel Raynal
2021-08-20 7:13 ` Sa, Nuno
2021-08-18 11:11 ` [PATCH 07/16] iio: adc: max1027: Create a helper to configure the trigger Miquel Raynal
2021-08-20 7:16 ` Sa, Nuno
2021-08-30 10:16 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 08/16] iio: adc: max1027: Explain better how the trigger state gets changed Miquel Raynal
2021-08-20 7:17 ` Sa, Nuno
2021-08-18 11:11 ` Miquel Raynal [this message]
2021-08-20 7:18 ` [PATCH 09/16] iio: adc: max1027: Create a helper to configure the channels to scan Sa, Nuno
2021-08-18 11:11 ` [PATCH 10/16] iio: adc: max1027: Prevent single channel accesses during buffer reads Miquel Raynal
2021-08-20 7:20 ` Sa, Nuno
2021-08-20 7:30 ` Sa, Nuno
2021-08-30 10:20 ` Jonathan Cameron
2021-09-02 8:56 ` Miquel Raynal
2021-08-18 11:11 ` [PATCH 11/16] iio: adc: max1027: Separate the IRQ handler from the read logic Miquel Raynal
2021-08-20 7:23 ` Sa, Nuno
2021-09-02 8:55 ` Miquel Raynal
2021-09-04 14:08 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 12/16] iio: adc: max1027: Introduce an end of conversion helper Miquel Raynal
2021-08-20 7:28 ` Sa, Nuno
2021-09-02 9:26 ` Miquel Raynal
2021-08-30 10:34 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 13/16] iio: adc: max1027: Prepare re-using the EOC interrupt Miquel Raynal
2021-08-20 7:31 ` Sa, Nuno
2021-08-30 10:30 ` Jonathan Cameron
2021-08-30 10:47 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 14/16] iio: adc: max1027: Consolidate the end of conversion helper Miquel Raynal
2021-08-20 7:45 ` Sa, Nuno
2021-08-30 10:37 ` Jonathan Cameron
2021-08-30 12:44 ` Sa, Nuno
2021-08-30 14:32 ` Jonathan Cameron
2021-09-02 15:12 ` Miquel Raynal
2021-09-03 14:28 ` Sa, Nuno
2021-09-03 14:46 ` Miquel Raynal
2021-09-05 9:41 ` Jonathan Cameron
2021-09-06 9:12 ` Sa, Nuno
2021-09-06 9:30 ` Sa, Nuno
2021-08-18 11:11 ` [PATCH 15/16] iio: adc: max1027: Support software triggers Miquel Raynal
2021-08-20 7:58 ` Sa, Nuno
2021-09-02 12:25 ` Miquel Raynal
2021-09-03 14:20 ` Sa, Nuno
2021-08-30 10:50 ` Jonathan Cameron
2021-09-02 15:21 ` Miquel Raynal
2021-09-05 9:43 ` Jonathan Cameron
2021-08-18 11:11 ` [PATCH 16/16] iio: adc: max1027: Enable software triggers to be used without IRQ Miquel Raynal
2021-08-30 10:54 ` Jonathan Cameron
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