[PATCH v4 06/16] iio: adc: at91-sama5d2_adc: adapt the driver for sama7d65

[Varshini Rajendran <varshini.rajendran@microchip.com>]

Add support for sama7d65 ADC. The differences are highlighted with the
compatible. The calibration data layout is the main difference.

Update Kconfig help text to mention SAMA7 SoC family support.

Signed-off-by: Varshini Rajendran <varshini.rajendran@microchip.com>
---
 drivers/iio/adc/Kconfig            |  2 +-
 drivers/iio/adc/at91-sama5d2_adc.c | 30 ++++++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 3755a81c1efd..85b443853a08 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -647,7 +647,7 @@ config AT91_SAMA5D2_ADC
 	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Atmel SAMA5D2 ADC which is
-	  available on SAMA5D2 SoC family.
+	  available on SAMA5D2 and SAMA7 SoC families.
 
 	  To compile this driver as a module, choose M here: the module will be
 	  called at91-sama5d2_adc.
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 63481ecb94f5..a54691b38244 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -530,6 +530,15 @@ static const struct at91_adc_temp_calib_layout sama7g5_temp_calib = {
 	.p1_scale = { .numerator = 1000, .denominator = 1 },
 };
 
+static const struct at91_adc_temp_calib_layout sama7d65_temp_calib = {
+	.tag_idx = 1,
+	.p1_idx = 3,
+	.p4_idx = 2,
+	.p6_idx = 5,
+	.min_len = 11,
+	.p1_scale = { .numerator = 1, .denominator = 1000 },
+};
+
 /* Temperature sensor calibration - Vtemp voltage sensitivity to temperature. */
 #define AT91_ADC_TS_VTEMP_DT		(2080U)
 
@@ -768,6 +777,24 @@ static const struct at91_adc_platform sama7g5_platform = {
 	.temp_calib_layout = &sama7g5_temp_calib,
 };
 
+static const struct at91_adc_platform sama7d65_platform = {
+	.layout = &sama7g5_layout,
+	.adc_channels = &at91_sama7g5_adc_channels,
+	.nr_channels = AT91_SAMA7G5_SINGLE_CHAN_CNT +
+		       AT91_SAMA7G5_DIFF_CHAN_CNT +
+		       AT91_SAMA7G5_TEMP_CHAN_CNT,
+	.max_channels = ARRAY_SIZE(at91_sama7g5_adc_channels),
+	.max_index = AT91_SAMA7G5_MAX_CHAN_IDX,
+	.hw_trig_cnt = AT91_SAMA7G5_HW_TRIG_CNT,
+	.osr_mask = GENMASK(18, 16),
+	.oversampling_avail = { 1, 4, 16, 64, 256 },
+	.oversampling_avail_no = 5,
+	.chan_realbits = 16,
+	.temp_sensor = true,
+	.temp_chan = AT91_SAMA7G5_ADC_TEMP_CHANNEL,
+	.temp_calib_layout = &sama7d65_temp_calib,
+};
+
 static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan)
 {
 	int i;
@@ -2632,6 +2659,9 @@ static const struct of_device_id at91_adc_dt_match[] = {
 	}, {
 		.compatible = "microchip,sama7g5-adc",
 		.data = &sama7g5_platform,
+	}, {
+		.compatible = "microchip,sama7d65-adc",
+		.data = &sama7d65_platform,
 	}, {
 		/* sentinel */
 	}
-- 
2.34.1