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Message-ID: <20241014094154.9439-4-antoniu.miclaus@analog.com>
Date: Mon, 14 Oct 2024 12:40:38 +0300
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: Lars-Peter Clausen <lars@...afoo.de>,
Michael Hennerich
<Michael.Hennerich@...log.com>,
Jonathan Cameron <jic23@...nel.org>, "Rob
Herring" <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
"Conor
Dooley" <conor+dt@...nel.org>, Nuno Sa <nuno.sa@...log.com>,
Olivier Moysan
<olivier.moysan@...s.st.com>,
Uwe Kleine-König
<ukleinek@...nel.org>,
Andy Shevchenko <andy@...nel.org>,
David Lechner
<dlechner@...libre.com>,
Marcelo Schmitt <marcelo.schmitt@...log.com>,
"Marius Cristea" <marius.cristea@...rochip.com>,
Dumitru Ceclan
<mitrutzceclan@...il.com>,
Antoniu Miclaus <antoniu.miclaus@...log.com>,
João Paulo Gonçalves <joao.goncalves@...adex.com>,
Alisa-Dariana Roman <alisadariana@...il.com>,
Ivan Mikhaylov
<fr0st61te@...il.com>,
Sergiu Cuciurean <sergiu.cuciurean@...log.com>,
"Dragos Bogdan" <dragos.bogdan@...log.com>,
<linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-pwm@...r.kernel.org>
Subject: [PATCH v3 4/6] iio: adc: adi-axi-adc: set data format
Add support for selecting the data format within the AXI ADC ip.
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
---
no changes in v3.
drivers/iio/adc/adi-axi-adc.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
index ff48f26e02a3..363cc29b4c18 100644
--- a/drivers/iio/adc/adi-axi-adc.c
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -45,6 +45,9 @@
#define ADI_AXI_ADC_REG_CTRL 0x0044
#define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1)
+#define ADI_AXI_ADC_REG_CNTRL_3 0x004c
+#define ADI_AXI_ADC_CNTRL_3_CUSTOM_CONTROL_MSK GENMASK(7, 0)
+
#define ADI_AXI_ADC_REG_DRP_STATUS 0x0074
#define ADI_AXI_ADC_DRP_LOCKED BIT(17)
@@ -271,6 +274,25 @@ static int axi_adc_interface_type_get(struct iio_backend *back,
return 0;
}
+static int axi_adc_data_size_set(struct iio_backend *back,
+ ssize_t size)
+{
+ struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+ unsigned int val;
+
+ if (size <= 20)
+ val = 0;
+ else if (size <= 24)
+ val = 1;
+ else if (size <= 32)
+ val = 3;
+ else
+ return -EINVAL;
+
+ return regmap_update_bits(st->regmap, ADI_AXI_ADC_REG_CNTRL_3,
+ ADI_AXI_ADC_CNTRL_3_CUSTOM_CONTROL_MSK, val);
+}
+
static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back,
struct iio_dev *indio_dev)
{
@@ -308,6 +330,7 @@ static const struct iio_backend_ops adi_axi_adc_generic = {
.test_pattern_set = axi_adc_test_pattern_set,
.chan_status = axi_adc_chan_status,
.interface_type_get = axi_adc_interface_type_get,
+ .data_size_set = axi_adc_data_size_set,
};
static int adi_axi_adc_probe(struct platform_device *pdev)
--
2.46.2
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