On 29.01.2018 10:48, Maxime Ripard wrote:
On Mon, Jan 29, 2018 at 12:29:13AM +0100, Philipp Rossak wrote:
This patch adds support for the A83T ths sensor.
The A83T supports interrupts. The interrupt is configured to update the
the sensor values every second.
Signed-off-by: Philipp Rossak <embed3d@xxxxxxxxx>
---
drivers/iio/adc/sun4i-gpadc-iio.c | 38 ++++++++++++++++++++++++++++++++++++++
include/linux/mfd/sun4i-gpadc.h | 18 ++++++++++++++++++
2 files changed, 56 insertions(+)
diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index 8196203d65fe..9f7895ba1966 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 = {
SUN8I_H3_THS_TEMP_PERIOD(0x7),
};
+static const struct gpadc_data sun8i_a83t_ths_data = {
+ .temp_offset = -2724,
+ .temp_scale = -70,
+ .temp_data = {SUN8I_H3_THS_TDATA0,
+ SUN8I_A83T_THS_TDATA1,
+ SUN8I_A83T_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 = SUN4I_GPADC_CTRL0_T_ACQ(0x1f3),
+ .ctrl2_map = SUN8I_H3_THS_ACQ1(0x1f3),
Where are these values coming from?
These values are calculated with the formulas from the datasheet and
also tested on hardware. These settings seem ok.
+ .sensor_en_map = SUN8I_H3_THS_TEMP_SENSE_EN0 |
+ SUN8I_A83T_THS_TEMP_SENSE_EN1 |
+ SUN8I_A83T_THS_TEMP_SENSE_EN2,
+ .filter_map = SUN4I_GPADC_CTRL3_FILTER_EN |
+ SUN4I_GPADC_CTRL3_FILTER_TYPE(0x2),
+ .irq_clear_map = SUN8I_H3_THS_INTS_ALARM_INT_0 |
+ SUN8I_A83T_THS_INTS_ALARM_INT_1 |
+ SUN8I_A83T_THS_INTS_ALARM_INT_2 |
+ SUN8I_H3_THS_INTS_SHUT_INT_0 |
+ SUN8I_A83T_THS_INTS_SHUT_INT_1 |
+ SUN8I_A83T_THS_INTS_SHUT_INT_2 |
+ SUN8I_H3_THS_INTS_TDATA_IRQ_0 |
+ SUN8I_A83T_THS_INTS_TDATA_IRQ_1 |
+ SUN8I_A83T_THS_INTS_TDATA_IRQ_2,
Do you reall need to clear all these interrupts if you're using only
one?
No, I don't think so, I will remove them in the next version.
Maxime
Philipp
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
