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 <[email protected]> --- drivers/iio/adc/sun4i-gpadc-iio.c | 59 +++++++++++++++++++++++++++++++++++++ include/linux/iio/adc/sun4i-gpadc.h | 6 ++++ 2 files changed, 65 insertions(+) diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c index d5c7971b2558..a184a87c56d4 100644 --- a/drivers/iio/adc/sun4i-gpadc-iio.c +++ b/drivers/iio/adc/sun4i-gpadc-iio.c @@ -84,6 +84,8 @@ static int sun8i_h3_ths_resume(struct sun4i_gpadc_iio *info); static int sun8i_h3_ths_suspend(struct sun4i_gpadc_iio *info); static irqreturn_t sunx8i_h3_irq_thread(int irq, void *data); +static int sun8i_a83t_ths_resume(struct sun4i_gpadc_iio *info); + static const struct gpadc_data sun4i_gpadc_data = { .temp_offset = -1932, .temp_scale = 133, @@ -158,6 +160,21 @@ static const struct gpadc_data sun8i_h3_ths_data = { .ths_irq_clear = SUN8I_H3_THS_INTS_TDATA_IRQ_0, }; +static const struct gpadc_data sun8i_a83t_ths_data = { + .temp_offset = -2724, + .temp_scale = -70, + .temp_data_base = SUN8I_H3_THS_TDATA0, + .ths_irq_thread = sunx8i_h3_irq_thread, + .support_irq = true, + .sensor_count = 3, + .supports_nvmem = true, + .ths_resume = sun8i_a83t_ths_resume, + .ths_suspend = sun8i_h3_ths_suspend, + .ths_irq_clear = SUN8I_H3_THS_INTS_TDATA_IRQ_0 | + SUN8I_A83T_THS_INTS_TDATA_IRQ_1 | + SUN8I_A83T_THS_INTS_TDATA_IRQ_2, +}; + struct sun4i_sensor_tzd { struct sun4i_gpadc_iio *info; struct thermal_zone_device *tzd; @@ -541,6 +558,44 @@ static int sun8i_h3_ths_resume(struct sun4i_gpadc_iio *info) return 0; } +static int sun8i_a83t_ths_resume(struct sun4i_gpadc_iio *info) +{ + u32 value; + + sun8i_h3_calibrate(info); + + regmap_write(info->regmap, SUN8I_H3_THS_CTRL0, + SUN4I_GPADC_CTRL0_T_ACQ(0x13f)); + + regmap_write(info->regmap, SUN8I_H3_THS_CTRL2, + SUN8I_H3_THS_ACQ1(0x13f)); + + regmap_write(info->regmap, SUN8I_H3_THS_STAT, + SUN8I_H3_THS_INTS_TDATA_IRQ_0 | + SUN8I_A83T_THS_INTS_TDATA_IRQ_1 | + SUN8I_A83T_THS_INTS_TDATA_IRQ_2); + + regmap_write(info->regmap, SUN8I_H3_THS_FILTER, + SUN4I_GPADC_CTRL3_FILTER_EN | + SUN4I_GPADC_CTRL3_FILTER_TYPE(0x2)); + + regmap_write(info->regmap, SUN8I_H3_THS_INTC, + SUN8I_H3_THS_INTC_TDATA_IRQ_EN0 | + SUN8I_A83T_THS_INTC_TDATA_IRQ_EN1 | + SUN8I_A83T_THS_INTC_TDATA_IRQ_EN2 | + SUN8I_H3_THS_TEMP_PERIOD(0x257)); + + regmap_read(info->regmap, SUN8I_H3_THS_CTRL2, &value); + + regmap_write(info->regmap, SUN8I_H3_THS_CTRL2, + SUN8I_H3_THS_TEMP_SENSE_EN0 | + SUN8I_A83T_THS_TEMP_SENSE_EN1 | + SUN8I_A83T_THS_TEMP_SENSE_EN2 | + value); + + return 0; +} + static int sun4i_gpadc_get_temp(void *data, int *temp) { struct sun4i_sensor_tzd *tzd = data; @@ -588,6 +643,10 @@ 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 */ } }; diff --git a/include/linux/iio/adc/sun4i-gpadc.h b/include/linux/iio/adc/sun4i-gpadc.h index 169b4de9a34d..673459bb3ec3 100644 --- a/include/linux/iio/adc/sun4i-gpadc.h +++ b/include/linux/iio/adc/sun4i-gpadc.h @@ -105,13 +105,19 @@ #define SUN8I_H3_THS_CTRL2 0x40 #define SUN8I_H3_THS_ACQ1(x) (GENMASK(31, 16) & ((x) << 16)) #define SUN8I_H3_THS_TEMP_SENSE_EN0 BIT(0) +#define SUN8I_A83T_THS_TEMP_SENSE_EN1 BIT(1) +#define SUN8I_A83T_THS_TEMP_SENSE_EN2 BIT(2) #define SUN8I_H3_THS_INTC 0x44 #define SUN8I_H3_THS_TEMP_PERIOD(x) (GENMASK(31, 12) & ((x) << 12)) #define SUN8I_H3_THS_INTC_TDATA_IRQ_EN0 BIT(8) +#define SUN8I_A83T_THS_INTC_TDATA_IRQ_EN1 BIT(9) +#define SUN8I_A83T_THS_INTC_TDATA_IRQ_EN2 BIT(10) #define SUN8I_H3_THS_STAT 0x48 #define SUN8I_H3_THS_INTS_TDATA_IRQ_0 BIT(8) +#define SUN8I_A83T_THS_INTS_TDATA_IRQ_1 BIT(9) +#define SUN8I_A83T_THS_INTS_TDATA_IRQ_2 BIT(10) #define SUN8I_H3_THS_FILTER 0x70 #define SUNXI_THS_CDATA_0_1 0x74 -- 2.11.0 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
