[PATCH v2 5/6] iio: adc: ade9000: add support for ADE9430

[Antoniu Miclaus <antoniu.miclaus@analog.com>]

The ADE9430 is a polyphase energy metering device that is register
compatible with the ADE9000. The differences relevant to the driver are
the absence of the on-chip dip/swell detection and the absence of an
on-chip digital integrator (the ADE9430 uses an external analog integrator
for Rogowski coils, so the DICOEFF register does not exist). Its full-scale
ADC codes are the same family-A values as the ADE9000.

Add a chip_info for the ADE9430, reusing the dip/swell-less channel table
first added for the ADE9078, and explicitly set has_digital_integrator to
false so the DICOEFF write is skipped. Wire up the SPI and OF device tables
and Kconfig.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
---
Changes in v2:
- reuse ade9078_channels instead of adding a duplicate channel table.
- move the DICOEFF gating to a separate precursor patch.

 drivers/iio/adc/Kconfig   |  1 +
 drivers/iio/adc/ade9000.c | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 7a60ffd0ddd8..3a3ae09fc10f 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -587,6 +587,7 @@ config ADE9000
 	  integrated circuits:
 	    - ADE9000
 	    - ADE9078
+	    - ADE9430
 
 	  The devices feature high-precision analog-to-digital converters
 	  and digital signal processing to compute RMS values, power factor,
diff --git a/drivers/iio/adc/ade9000.c b/drivers/iio/adc/ade9000.c
index 0167d5bcdb74..e0113b62a261 100644
--- a/drivers/iio/adc/ade9000.c
+++ b/drivers/iio/adc/ade9000.c
@@ -695,6 +695,16 @@ static const struct ade9000_chip_info ade9078_chip_info = {
 	.has_digital_integrator = true,
 };
 
+static const struct ade9000_chip_info ade9430_chip_info = {
+	.name = "ade9430",
+	.channels = ade9078_channels,
+	.num_channels = ARRAY_SIZE(ade9078_channels),
+	.rms_full_scale_codes = 52702092,
+	.watt_full_scale_codes = 20694066,
+	.pcf_full_scale_codes = 74532013,
+	.has_digital_integrator = false, /* no on-chip digital integrator */
+};
+
 static const struct reg_sequence ade9000_initialization_sequence[] = {
 	{ ADE9000_REG_PGA_GAIN, ADE9000_PGA_GAIN },
 	{ ADE9000_REG_CONFIG0, ADE9000_CONFIG0 },
@@ -1859,6 +1869,7 @@ static int ade9000_probe(struct spi_device *spi)
 static const struct spi_device_id ade9000_id[] = {
 	{ .name = "ade9000", .driver_data = (kernel_ulong_t)&ade9000_chip_info },
 	{ .name = "ade9078", .driver_data = (kernel_ulong_t)&ade9078_chip_info },
+	{ .name = "ade9430", .driver_data = (kernel_ulong_t)&ade9430_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, ade9000_id);
@@ -1866,6 +1877,7 @@ MODULE_DEVICE_TABLE(spi, ade9000_id);
 static const struct of_device_id ade9000_of_match[] = {
 	{ .compatible = "adi,ade9000", .data = &ade9000_chip_info },
 	{ .compatible = "adi,ade9078", .data = &ade9078_chip_info },
+	{ .compatible = "adi,ade9430", .data = &ade9430_chip_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ade9000_of_match);
-- 
2.43.0