linux-kernel - [PATCH 10/16] iio: adc: sun4i-gpadc-iio: add support for A83T thermal sensor

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Message-Id: <20180126151941.12183-11-embed3d@gmail.com>
Date:   Fri, 26 Jan 2018 16:19:35 +0100
From:   Philipp Rossak <embed3d@...il.com>
To:     lee.jones@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
        maxime.ripard@...e-electrons.com, wens@...e.org,
        linux@...linux.org.uk, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net, davem@...emloft.net,
        hans.verkuil@...co.com, mchehab@...nel.org, rask@...melder.dk,
        clabbe.montjoie@...il.com, sean@...s.org, krzk@...nel.org,
        quentin.schulz@...e-electrons.com, icenowy@...c.io,
        edu.molinas@...il.com, singhalsimran0@...il.com
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com
Subject: [PATCH 10/16] iio: adc: sun4i-gpadc-iio: add support for A83T thermal sensor

This patch adds support for the A83T ths sensor.

The A83T does not support interrupts. This seems to be broken.
The calibration data is writen at the begin of the init process.

Signed-off-by: Philipp Rossak <embed3d@...il.com>
---
 drivers/iio/adc/sun4i-gpadc-iio.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index f2e0ec65c53e..b8693afcdbea 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -170,6 +170,40 @@ static const struct gpadc_data sun8i_h3_ths_data = {
 		SUNXI_THS_TEMP_PERIOD(0x7),
 };
 
+static const struct gpadc_data sun8i_a83t_ths_data = {
+	.temp_offset = -2724,
+	.temp_scale = -70,
+	.temp_data = {SUNXI_THS_TDATA0,
+		SUNXI_THS_TDATA1,
+		SUNXI_THS_TDATA2,
+		0},
+	.sample_start = sunxi_ths_sample_start,
+	.sample_end = sunxi_ths_sample_end,
+	.sensor_count = 3,
+	.supports_nvmem = false,
+	.support_irq = true,
+	.ctrl0_map = SUNXI_THS_ACQ0(0x1f3),
+	.ctrl2_map = SUNXI_THS_ACQ1(0x1f3),
+	.sensor_en_map = SUNXI_THS_TEMP_SENSE_EN0 |
+		SUNXI_THS_TEMP_SENSE_EN1 |
+		SUNXI_THS_TEMP_SENSE_EN2,
+	.filter_map = SUNXI_THS_FILTER_EN |
+		SUNXI_THS_FILTER_TYPE(0x2),
+	.irq_clear_map = SUNXI_THS_INTS_ALARM_INT_0 |
+		SUNXI_THS_INTS_ALARM_INT_1 |
+		SUNXI_THS_INTS_ALARM_INT_2 |
+		SUNXI_THS_INTS_SHUT_INT_0  |
+		SUNXI_THS_INTS_SHUT_INT_1  |
+		SUNXI_THS_INTS_SHUT_INT_2  |
+		SUNXI_THS_INTS_TDATA_IRQ_0 |
+		SUNXI_THS_INTS_TDATA_IRQ_1 |
+		SUNXI_THS_INTS_TDATA_IRQ_2,
+	.irq_control_map = SUNXI_THS_INTC_TDATA_IRQ_EN0 |
+		SUNXI_THS_INTC_TDATA_IRQ_EN1 |
+		SUNXI_THS_INTC_TDATA_IRQ_EN2 |
+		SUNXI_THS_TEMP_PERIOD(0x257),
+};
+
 struct sun4i_gpadc_iio {
 	struct iio_dev			*indio_dev;
 	struct completion		completion;
@@ -672,6 +706,10 @@ static const struct of_device_id sun4i_gpadc_of_id[] = {
 		.compatible = "allwinner,sun8i-h3-ths",
 		.data = &sun8i_h3_ths_data,
 	},
+	{
+		.compatible = "allwinner,sun8i-a83t-ths",
+		.data = &sun8i_a83t_ths_data,
+	},
 	{ /* sentinel */ }
 };
 
-- 
2.11.0