[PATCH v2 4/4] iio: adc: adc128s052: Support ROHM BD7910[0,1,2,3]

[Matti Vaittinen <mazziesaccount@gmail.com>]

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The ROHM BD79100, BD79101, BD79102, BD79103 are very similar ADCs as the
ROHM BD79104. The BD79100 has only 1 channel. BD79101 has 2 channels and
the BD79102 has 4 channels. Both BD79103 and BD79104 have 4 channels,
and, based on the data sheets, they seem identical from the software
point-of-view.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>

---
Revision history:
 v1 => v2
 - Rename channel structs as discussed in review round 1.

Tested only using the BD79104. The ROHM hardware colleagues swore this
testing should be sufficient...
---
 drivers/iio/adc/ti-adc128s052.c | 36 +++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c
index 9b8ecaca01ed..4ae65793ad9b 100644
--- a/drivers/iio/adc/ti-adc128s052.c
+++ b/drivers/iio/adc/ti-adc128s052.c
@@ -99,6 +99,10 @@ static int adc128_read_raw(struct iio_dev *indio_dev,
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) \
 	}
 
+static const struct iio_chan_spec simple_1chan_adc_channels[] = {
+	ADC128_VOLTAGE_CHANNEL(0),
+};
+
 static const struct iio_chan_spec simple_2chan_adc_channels[] = {
 	ADC128_VOLTAGE_CHANNEL(0),
 	ADC128_VOLTAGE_CHANNEL(1),
@@ -142,6 +146,30 @@ static const struct adc128_configuration adc128s_config = {
 	.refname = "vref",
 };
 
+static const struct adc128_configuration bd79100_config = {
+	.channels = simple_1chan_adc_channels,
+	.num_channels = ARRAY_SIZE(simple_1chan_adc_channels),
+	.refname = "vdd",
+	.other_regulators = &bd79104_regulators,
+	.num_other_regulators = 1,
+};
+
+static const struct adc128_configuration bd79101_config = {
+	.channels = simple_2chan_adc_channels,
+	.num_channels = ARRAY_SIZE(simple_2chan_adc_channels),
+	.refname = "vdd",
+	.other_regulators = &bd79104_regulators,
+	.num_other_regulators = 1,
+};
+
+static const struct adc128_configuration bd79102_config = {
+	.channels = simple_4chan_adc_channels,
+	.num_channels = ARRAY_SIZE(simple_4chan_adc_channels),
+	.refname = "vdd",
+	.other_regulators = &bd79104_regulators,
+	.num_other_regulators = 1,
+};
+
 static const struct adc128_configuration bd79104_config = {
 	.channels = simple_8chan_adc_channels,
 	.num_channels = ARRAY_SIZE(simple_8chan_adc_channels),
@@ -210,6 +238,10 @@ static const struct of_device_id adc128_of_match[] = {
 	{ .compatible = "ti,adc124s021", .data = &adc124s_config },
 	{ .compatible = "ti,adc124s051", .data = &adc124s_config },
 	{ .compatible = "ti,adc124s101", .data = &adc124s_config },
+	{ .compatible = "rohm,bd79100", .data = &bd79100_config },
+	{ .compatible = "rohm,bd79101", .data = &bd79101_config },
+	{ .compatible = "rohm,bd79102", .data = &bd79102_config },
+	{ .compatible = "rohm,bd79103", .data = &bd79104_config },
 	{ .compatible = "rohm,bd79104", .data = &bd79104_config },
 	{ }
 };
@@ -223,6 +255,10 @@ static const struct spi_device_id adc128_id[] = {
 	{ "adc124s021", (kernel_ulong_t)&adc124s_config },
 	{ "adc124s051", (kernel_ulong_t)&adc124s_config },
 	{ "adc124s101", (kernel_ulong_t)&adc124s_config },
+	{ "bd79100", (kernel_ulong_t)&bd79100_config },
+	{ "bd79101", (kernel_ulong_t)&bd79101_config },
+	{ "bd79102", (kernel_ulong_t)&bd79102_config },
+	{ "bd79103", (kernel_ulong_t)&bd79104_config },
 	{ "bd79104", (kernel_ulong_t)&bd79104_config },
 	{ }
 };
-- 
2.50.1


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