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Message-ID: <20211110111750.27263-5-alexandru.tachici@analog.com>
Date: Wed, 10 Nov 2021 13:17:49 +0200
From: <alexandru.tachici@...log.com>
To: <linux-iio@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <jic23@...nel.org>,
Alexandru Tachici <alexandru.tachici@...log.com>
Subject: [PATCH 4/5] iio: adc: ad7124: add sequencer support
From: Alexandru Tachici <alexandru.tachici@...log.com>
Add sequencer support for AD7124.
Signed-off-by: Alexandru Tachici <alexandru.tachici@...log.com>
---
drivers/iio/adc/ad7124.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
index 30299b899799..5760a222df5f 100644
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -43,6 +43,8 @@
#define AD7124_STATUS_POR_FLAG_MSK BIT(4)
/* AD7124_ADC_CONTROL */
+#define AD7124_ADC_STATUS_EN_MSK BIT(10)
+#define AD7124_ADC_STATUS_EN(x) FIELD_PREP(AD7124_ADC_STATUS_EN_MSK, x)
#define AD7124_ADC_CTRL_REF_EN_MSK BIT(8)
#define AD7124_ADC_CTRL_REF_EN(x) FIELD_PREP(AD7124_ADC_CTRL_REF_EN_MSK, x)
#define AD7124_ADC_CTRL_PWR_MSK GENMASK(7, 6)
@@ -512,14 +514,27 @@ static int ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
return ret;
}
+static int ad7124_append_status(struct ad_sigma_delta *sd, bool append)
+{
+ struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+
+ st->adc_control &= ~AD7124_ADC_STATUS_EN_MSK;
+ st->adc_control |= AD7124_ADC_STATUS_EN(append);
+
+ return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, st->adc_control);
+}
+
static const struct ad_sigma_delta_info ad7124_sigma_delta_info = {
.set_channel = ad7124_set_channel,
+ .append_status = ad7124_append_status,
.set_mode = ad7124_set_mode,
.has_registers = true,
.addr_shift = 0,
.read_mask = BIT(6),
+ .status_ch_mask = GENMASK(3, 0),
.data_reg = AD7124_DATA,
- .irq_flags = IRQF_TRIGGER_FALLING
+ .num_slots = 8,
+ .irq_flags = IRQF_TRIGGER_FALLING,
};
static int ad7124_read_raw(struct iio_dev *indio_dev,
--
2.25.1
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