linux-kernel - [PATCH RFC 5/5] iio: adc: ad4030: add support for ad4632-16 and ad4632-24

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Message-Id: <20240627-eblanc-ad4630_v1-v1-5-fdc0610c23b0@baylibre.com>
Date: Thu, 27 Jun 2024 13:59:16 +0200
From: Esteban Blanc <eblanc@...libre.com>
To: baylibre-upstreaming@...ups.io, 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>
Cc: Michael Hennerich <michael.hennerich@...log.com>, 
 linux-iio@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, David Lechner <dlechner@...libre.com>, 
 Esteban Blanc <eblanc@...libre.com>
Subject: [PATCH RFC 5/5] iio: adc: ad4030: add support for ad4632-16 and
 ad4632-24

AD4632-24 and AD4632-16 are 2 channels ADCs. Both channels are
interleaved bit per bit on SDO line.

Both of them do not have evaluation board. As such, the support added
here can't be tested. Support is provided as best effort until someone get
their hands on one.

Signed-off-by: Esteban Blanc <eblanc@...libre.com>
---
 drivers/iio/adc/ad4030.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/drivers/iio/adc/ad4030.c b/drivers/iio/adc/ad4030.c
index 09d2f6d8cfe6..1a5517f339aa 100644
--- a/drivers/iio/adc/ad4030.c
+++ b/drivers/iio/adc/ad4030.c
@@ -34,6 +34,8 @@
 #define     AD4030_REG_CHIP_GRADE_AD4030_24_GRADE		0x10
 #define     AD4030_REG_CHIP_GRADE_AD4630_16_GRADE		0x03
 #define     AD4030_REG_CHIP_GRADE_AD4630_24_GRADE		0x00
+#define     AD4030_REG_CHIP_GRADE_AD4632_16_GRADE		0x05
+#define     AD4030_REG_CHIP_GRADE_AD4632_24_GRADE		0x02
 #define     AD4030_REG_CHIP_GRADE_MASK_CHIP_GRADE		GENMASK(7, 3)
 #define AD4030_REG_SCRATCH_PAD					0x0A
 #define AD4030_REG_SPI_REVISION					0x0B
@@ -1012,10 +1014,44 @@ static const struct ad4030_chip_info ad4630_24_chip_info = {
 	.num_channels = 2,
 };
 
+static const struct ad4030_chip_info ad4632_16_chip_info = {
+	.name = "ad4632-16",
+	.available_masks = ad4630_channel_masks,
+	.available_masks_len = ARRAY_SIZE(ad4630_channel_masks),
+	.channels = {
+		AD4030_CHAN_IN(0, ad4030_16_scan_types),
+		AD4030_CHAN_IN(1, ad4030_16_scan_types),
+		AD4030_CHAN_CMO(2),
+		AD4030_CHAN_CMO(3),
+		IIO_CHAN_SOFT_TIMESTAMP(4),
+	},
+	.grade = AD4030_REG_CHIP_GRADE_AD4632_16_GRADE,
+	.precision_bits = 16,
+	.num_channels = 2,
+};
+
+static const struct ad4030_chip_info ad4632_24_chip_info = {
+	.name = "ad4632-24",
+	.available_masks = ad4630_channel_masks,
+	.available_masks_len = ARRAY_SIZE(ad4630_channel_masks),
+	.channels = {
+		AD4030_CHAN_IN(0, ad4030_24_scan_types),
+		AD4030_CHAN_IN(1, ad4030_24_scan_types),
+		AD4030_CHAN_CMO(2),
+		AD4030_CHAN_CMO(3),
+		IIO_CHAN_SOFT_TIMESTAMP(4),
+	},
+	.grade = AD4030_REG_CHIP_GRADE_AD4632_24_GRADE,
+	.precision_bits = 24,
+	.num_channels = 2,
+};
+
 static const struct spi_device_id ad4030_id_table[] = {
 	{ "ad4030-24", (kernel_ulong_t)&ad4030_24_chip_info },
 	{ "ad4630-16", (kernel_ulong_t)&ad4630_16_chip_info },
 	{ "ad4630-24", (kernel_ulong_t)&ad4630_24_chip_info },
+	{ "ad4632-16", (kernel_ulong_t)&ad4632_16_chip_info },
+	{ "ad4632-24", (kernel_ulong_t)&ad4632_24_chip_info },
 	{}
 };
 MODULE_DEVICE_TABLE(spi, ad4030_id_table);
@@ -1024,6 +1060,8 @@ static const struct of_device_id ad4030_of_match[] = {
 	{ .compatible = "adi,ad4030-24", .data = &ad4030_24_chip_info },
 	{ .compatible = "adi,ad4630-16", .data = &ad4630_16_chip_info },
 	{ .compatible = "adi,ad4630-24", .data = &ad4630_24_chip_info },
+	{ .compatible = "adi,ad4632-16", .data = &ad4632_16_chip_info },
+	{ .compatible = "adi,ad4632-24", .data = &ad4632_24_chip_info },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ad4030_of_match);

-- 
2.44.1