build/patch/kernel/archive/sunxi-5.15/patches.armbian/drv-iio-adc-sun4i-gpadc-iio-add-A64-thermal-sensor.patch

87 lines
2.5 KiB
Diff

From ddeddc46d2faee828445a80513f19ea20b9b75e1 Mon Sep 17 00:00:00 2001
From: Philipp Rossak <embed3d@gmail.com>
Date: Wed, 24 Jan 2018 17:41:45 +0100
Subject: [PATCH 052/101] drv:iio: adc: sun4i-gpadc-iio: add A64 thermal sensor
This patch adds support for the A64 ths sensor.
The A64 supports interrupts. The interrupt is configured to update
the sensor values every second.
Signed-off-by: Philipp Rossak <embed3d@gmail.com>
---
drivers/iio/adc/sun4i-gpadc-iio.c | 50 +++++++++++++++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index 696561cb4..e1100337f 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -243,6 +243,52 @@ static const struct gpadc_data sun9i_a80_ths_data = {
SUNXI_THS_TEMP_PERIOD(0x3a),
};
+static const struct gpadc_data sun50i_a64_ths_data = {
+ .temp_offset = -2170,
+ .temp_scale = -117,
+ .temp_data = {SUNXI_THS_TDATA0,
+ SUNXI_THS_TDATA1,
+ SUNXI_THS_TDATA2,
+ 0},
+ .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 = 3,
+ .supports_nvmem = false,
+ .support_irq = true,
+
+ /* The final sample period is calculated as follows:
+ * (THERMAL_PER + 1) * 4096 / 24MHz * 2^(FILTER_TYPE + 1)
+ *
+ * This results to about 1Hz with these settings.
+ */
+ .ctrl0_map = SUNXI_THS_ACQ0(0xff),
+ .ctrl2_map = SUNXI_THS_TEMP_SENSE_EN0 |
+ SUNXI_THS_TEMP_SENSE_EN1 |
+ SUNXI_THS_TEMP_SENSE_EN2 |
+ SUNXI_THS_ACQ1(0x3f),
+ .filter_map = SUNXI_THS_FILTER_EN |
+ SUNXI_THS_FILTER_TYPE(0x1),
+ .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 |
+ SUNXI_THS_INTS_ALARM_OFF_0 |
+ SUNXI_THS_INTS_ALARM_OFF_1 |
+ SUNXI_THS_INTS_ALARM_OFF_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(0x7),
+};
+
struct sun4i_gpadc_iio {
struct iio_dev *indio_dev;
struct completion completion;
@@ -751,6 +797,10 @@ static const struct of_device_id sun4i_gpadc_of_id[] = {
.compatible = "allwinner,sun9i-a80-ths",
.data = &sun9i_a80_ths_data,
},
+ {
+ .compatible = "allwinner,sun50i-a64-ths",
+ .data = &sun50i_a64_ths_data,
+ },
{ /* sentinel */ }
};
--
2.31.1