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Message-ID: <20241014094154.9439-3-antoniu.miclaus@analog.com>
Date: Mon, 14 Oct 2024 12:40:37 +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>,
"Mike
Looijmans" <mike.looijmans@...ic.nl>,
Antoniu Miclaus
<antoniu.miclaus@...log.com>,
Dumitru Ceclan <mitrutzceclan@...il.com>,
AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
Alisa-Dariana Roman <alisadariana@...il.com>,
Marius Cristea
<marius.cristea@...rochip.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 3/6] iio: adc: adi-axi-adc: add interface type
Add support for getting the interface (CMOS or LVDS) used by 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 21ce7564e83d..ff48f26e02a3 100644
--- a/drivers/iio/adc/adi-axi-adc.c
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -39,6 +39,9 @@
#define ADI_AXI_REG_RSTN_MMCM_RSTN BIT(1)
#define ADI_AXI_REG_RSTN_RSTN BIT(0)
+#define ADI_AXI_ADC_REG_CONFIG 0x000c
+#define ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N BIT(7)
+
#define ADI_AXI_ADC_REG_CTRL 0x0044
#define ADI_AXI_ADC_CTRL_DDR_EDGESEL_MASK BIT(1)
@@ -249,6 +252,25 @@ static int axi_adc_chan_disable(struct iio_backend *back, unsigned int chan)
ADI_AXI_REG_CHAN_CTRL_ENABLE);
}
+static int axi_adc_interface_type_get(struct iio_backend *back,
+ enum iio_backend_interface_type *type)
+{
+ struct adi_axi_adc_state *st = iio_backend_get_priv(back);
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(st->regmap, ADI_AXI_ADC_REG_CONFIG, &val);
+ if (ret)
+ return ret;
+
+ if (val & ADI_AXI_ADC_REG_CONFIG_CMOS_OR_LVDS_N)
+ *type = IIO_BACKEND_INTERFACE_CMOS;
+ else
+ *type = IIO_BACKEND_INTERFACE_LVDS;
+
+ return 0;
+}
+
static struct iio_buffer *axi_adc_request_buffer(struct iio_backend *back,
struct iio_dev *indio_dev)
{
@@ -285,6 +307,7 @@ static const struct iio_backend_ops adi_axi_adc_generic = {
.iodelay_set = axi_adc_iodelays_set,
.test_pattern_set = axi_adc_test_pattern_set,
.chan_status = axi_adc_chan_status,
+ .interface_type_get = axi_adc_interface_type_get,
};
static int adi_axi_adc_probe(struct platform_device *pdev)
--
2.46.2
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