#include <linux/spi/spi.h>
#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
#include <linux/iio/driver.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
#define TI_LMP92064_REG_CONFIG_A 0x0000
#define TI_LMP92064_REG_CONFIG_B 0x0001
.address = TI_LMP92064_CHAN_INC,
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = TI_LMP92064_CHAN_INC,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 12,
+ .storagebits = 16,
+ },
.datasheet_name = "INC",
},
{
.address = TI_LMP92064_CHAN_INV,
.info_mask_separate =
BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+ .scan_index = TI_LMP92064_CHAN_INV,
+ .scan_type = {
+ .sign = 'u',
+ .realbits = 12,
+ .storagebits = 16,
+ },
.datasheet_name = "INV",
},
+ IIO_CHAN_SOFT_TIMESTAMP(2),
+};
+
+static const unsigned long lmp92064_scan_masks[] = {
+ BIT(TI_LMP92064_CHAN_INC) | BIT(TI_LMP92064_CHAN_INV),
+ 0
};
static int lmp92064_read_meas(struct lmp92064_adc_priv *priv, u16 *res)
}
}
+static irqreturn_t lmp92064_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct lmp92064_adc_priv *priv = iio_priv(indio_dev);
+ struct {
+ u16 values[2];
+ int64_t timestamp __aligned(8);
+ } data;
+ int ret;
+
+ memset(&data, 0, sizeof(data));
+
+ ret = lmp92064_read_meas(priv, data.values);
+ if (ret)
+ goto err;
+
+ iio_push_to_buffers_with_timestamp(indio_dev, &data,
+ iio_get_time_ns(indio_dev));
+
+err:
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
+
static int lmp92064_reset(struct lmp92064_adc_priv *priv,
struct gpio_desc *gpio_reset)
{
indio_dev->channels = lmp92064_adc_channels;
indio_dev->num_channels = ARRAY_SIZE(lmp92064_adc_channels);
indio_dev->info = &lmp92064_adc_info;
+ indio_dev->available_scan_masks = lmp92064_scan_masks;
+
+ ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+ lmp92064_trigger_handler, NULL);
+ if (ret)
+ return dev_err_probe(dev, ret, "Failed to setup buffered read\n");
return devm_iio_device_register(dev, indio_dev);
}