From 724b777629fa4782031588aa2a60f1fae71c9080 Mon Sep 17 00:00:00 2001 From: Philipp Rossak Date: Wed, 24 Jan 2018 17:41:45 +0100 Subject: [PATCH 029/170] 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 --- 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 */ } }; -- 2.35.3