86 lines
2.7 KiB
Diff
86 lines
2.7 KiB
Diff
|
From 3ecaf8cb5dff95072c3d6be273500b7205bd59e3 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Philipp Rossak <embed3d@gmail.com>
|
||
|
|
Date: Wed, 24 Jan 2018 17:28:02 +0100
|
||
|
|
Subject: [PATCH 022/153] drv:iio:adc:sun4i-gpadc-iio: add A80 thermal sensor
|
||
|
|
|
||
|
|
This patch adds support for the A80 ths sensor.
|
||
|
|
|
||
|
|
The A80 has 4 sensors and supports interrupts. The interrupt is configured to update
|
||
|
|
the sensor values every second. The A80 shares some registers with the
|
||
|
|
integrated GPADC. ACQ0 must be set in the GPADC register with the offset
|
||
|
|
0x00. In fact the GPADC and the THS use the same register base and also
|
||
|
|
the same clocks and resets.
|
||
|
|
|
||
|
|
Signed-off-by: Philipp Rossak <embed3d@gmail.com>
|
||
|
|
---
|
||
|
|
drivers/iio/adc/sun4i-gpadc-iio.c | 46 +++++++++++++++++++++++++++++++
|
||
|
|
1 file changed, 46 insertions(+)
|
||
|
|
|
||
|
|
diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
|
||
|
|
index 775df17da..cc1547116 100644
|
||
|
|
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
|
||
|
|
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
|
||
|
|
@@ -201,6 +201,48 @@ static const struct gpadc_data sun8i_a83t_ths_data = {
|
||
|
|
SUNXI_THS_TEMP_PERIOD(0x257),
|
||
|
|
};
|
||
|
|
|
||
|
|
+static const struct gpadc_data sun9i_a80_ths_data = {
|
||
|
|
+ .temp_offset = -2794,
|
||
|
|
+ .temp_scale = -67,
|
||
|
|
+ .temp_data = {SUNXI_THS_TDATA0,
|
||
|
|
+ SUNXI_THS_TDATA1,
|
||
|
|
+ SUNXI_THS_TDATA2,
|
||
|
|
+ SUNXI_THS_TDATA3},
|
||
|
|
+ .sample_start = sunxi_ths_sample_start,
|
||
|
|
+ .sample_end = sunxi_ths_sample_end,
|
||
|
|
+ .has_bus_clk = true,
|
||
|
|
+ .has_bus_rst = true,
|
||
|
|
+ .has_mod_clk = true,
|
||
|
|
+ .sensor_count = 4,
|
||
|
|
+ .supports_nvmem = false,
|
||
|
|
+ .support_irq = true,
|
||
|
|
+ .ctrl0_map = SUNXI_THS_ACQ0(0x1f3),
|
||
|
|
+ .ctrl2_map = SUNXI_THS_TEMP_SENSE_EN0 |
|
||
|
|
+ SUNXI_THS_TEMP_SENSE_EN1 |
|
||
|
|
+ SUNXI_THS_TEMP_SENSE_EN2 |
|
||
|
|
+ SUNXI_THS_TEMP_SENSE_EN3 |
|
||
|
|
+ SUNXI_THS_ACQ1(0x1f3),
|
||
|
|
+ .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_ALARM_INT_3 |
|
||
|
|
+ SUNXI_THS_INTS_SHUT_INT_0 |
|
||
|
|
+ SUNXI_THS_INTS_SHUT_INT_1 |
|
||
|
|
+ SUNXI_THS_INTS_SHUT_INT_2 |
|
||
|
|
+ SUNXI_THS_INTS_SHUT_INT_3 |
|
||
|
|
+ SUNXI_THS_INTS_TDATA_IRQ_0 |
|
||
|
|
+ SUNXI_THS_INTS_TDATA_IRQ_1 |
|
||
|
|
+ SUNXI_THS_INTS_TDATA_IRQ_2 |
|
||
|
|
+ SUNXI_THS_INTS_TDATA_IRQ_3,
|
||
|
|
+ .irq_control_map = SUNXI_THS_INTC_TDATA_IRQ_EN0 |
|
||
|
|
+ SUNXI_THS_INTC_TDATA_IRQ_EN1 |
|
||
|
|
+ SUNXI_THS_INTC_TDATA_IRQ_EN2 |
|
||
|
|
+ SUNXI_THS_INTC_TDATA_IRQ_EN3 |
|
||
|
|
+ SUNXI_THS_TEMP_PERIOD(0x3a),
|
||
|
|
+};
|
||
|
|
+
|
||
|
|
struct sun4i_gpadc_iio {
|
||
|
|
struct iio_dev *indio_dev;
|
||
|
|
struct completion completion;
|
||
|
|
@@ -705,6 +747,10 @@ static const struct of_device_id sun4i_gpadc_of_id[] = {
|
||
|
|
.compatible = "allwinner,sun8i-a83t-ths",
|
||
|
|
.data = &sun8i_a83t_ths_data,
|
||
|
|
},
|
||
|
|
+ {
|
||
|
|
+ .compatible = "allwinner,sun9i-a80-ths",
|
||
|
|
+ .data = &sun9i_a80_ths_data,
|
||
|
|
+ },
|
||
|
|
{ /* sentinel */ }
|
||
|
|
};
|
||
|
|
|
||
|
|
--
|
||
|
|
2.35.3
|
||
|
|
|