#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/list.h>
+#include <linux/bitops.h>
#include "../iio.h"
#include "../sysfs.h"
#include "../trigger.h"
#include "adis16400.h"
-static IIO_SCAN_EL_C(in0_supply, ADIS16400_SCAN_SUPPLY,
- ADIS16400_SUPPLY_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(in0_supply, u, 14, 16);
-
-static IIO_SCAN_EL_C(gyro_x, ADIS16400_SCAN_GYRO_X, ADIS16400_XGYRO_OUT, NULL);
-static IIO_SCAN_EL_C(gyro_y, ADIS16400_SCAN_GYRO_Y, ADIS16400_YGYRO_OUT, NULL);
-static IIO_SCAN_EL_C(gyro_z, ADIS16400_SCAN_GYRO_Z, ADIS16400_ZGYRO_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(gyro, s, 14, 16);
-
-static IIO_SCAN_EL_C(accel_x, ADIS16400_SCAN_ACC_X, ADIS16400_XACCL_OUT, NULL);
-static IIO_SCAN_EL_C(accel_y, ADIS16400_SCAN_ACC_Y, ADIS16400_YACCL_OUT, NULL);
-static IIO_SCAN_EL_C(accel_z, ADIS16400_SCAN_ACC_Z, ADIS16400_ZACCL_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(accel, s, 14, 16);
-
-static IIO_SCAN_EL_C(magn_x, ADIS16400_SCAN_MAGN_X, ADIS16400_XMAGN_OUT, NULL);
-static IIO_SCAN_EL_C(magn_y, ADIS16400_SCAN_MAGN_Y, ADIS16400_YMAGN_OUT, NULL);
-static IIO_SCAN_EL_C(magn_z, ADIS16400_SCAN_MAGN_Z, ADIS16400_ZMAGN_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(magn, s, 14, 16);
-
-static IIO_SCAN_EL_C(temp, ADIS16400_SCAN_TEMP, ADIS16400_TEMP_OUT, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(temp, s, 12, 16);
-
-static IIO_SCAN_EL_C(in1, ADIS16400_SCAN_ADC_0, ADIS16400_AUX_ADC, NULL);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(in1, u, 12, 16);
-
-static IIO_SCAN_EL_TIMESTAMP(12);
-static IIO_CONST_ATTR_SCAN_EL_TYPE(timestamp, s, 64, 64);
-
-static struct attribute *adis16400_scan_el_attrs[] = {
- &iio_scan_el_in0_supply.dev_attr.attr,
- &iio_const_attr_in0_supply_index.dev_attr.attr,
- &iio_const_attr_in0_supply_type.dev_attr.attr,
- &iio_scan_el_gyro_x.dev_attr.attr,
- &iio_const_attr_gyro_x_index.dev_attr.attr,
- &iio_scan_el_gyro_y.dev_attr.attr,
- &iio_const_attr_gyro_y_index.dev_attr.attr,
- &iio_scan_el_gyro_z.dev_attr.attr,
- &iio_const_attr_gyro_z_index.dev_attr.attr,
- &iio_const_attr_gyro_type.dev_attr.attr,
- &iio_scan_el_accel_x.dev_attr.attr,
- &iio_const_attr_accel_x_index.dev_attr.attr,
- &iio_scan_el_accel_y.dev_attr.attr,
- &iio_const_attr_accel_y_index.dev_attr.attr,
- &iio_scan_el_accel_z.dev_attr.attr,
- &iio_const_attr_accel_z_index.dev_attr.attr,
- &iio_const_attr_accel_type.dev_attr.attr,
- &iio_scan_el_magn_x.dev_attr.attr,
- &iio_const_attr_magn_x_index.dev_attr.attr,
- &iio_scan_el_magn_y.dev_attr.attr,
- &iio_const_attr_magn_y_index.dev_attr.attr,
- &iio_scan_el_magn_z.dev_attr.attr,
- &iio_const_attr_magn_z_index.dev_attr.attr,
- &iio_const_attr_magn_type.dev_attr.attr,
- &iio_scan_el_temp.dev_attr.attr,
- &iio_const_attr_temp_index.dev_attr.attr,
- &iio_const_attr_temp_type.dev_attr.attr,
- &iio_scan_el_in1.dev_attr.attr,
- &iio_const_attr_in1_index.dev_attr.attr,
- &iio_const_attr_in1_type.dev_attr.attr,
- &iio_scan_el_timestamp.dev_attr.attr,
- &iio_const_attr_timestamp_index.dev_attr.attr,
- &iio_const_attr_timestamp_type.dev_attr.attr,
- NULL,
-};
-
-static struct attribute_group adis16400_scan_el_group = {
- .attrs = adis16400_scan_el_attrs,
- .name = "scan_elements",
-};
-
-/**
- * adis16400_poll_func_th() top half interrupt handler called by trigger
- * @private_data: iio_dev
- **/
-static void adis16400_poll_func_th(struct iio_dev *indio_dev, s64 time)
-{
- struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
- st->last_timestamp = time;
- schedule_work(&st->work_trigger_to_ring);
- /* Indicate that this interrupt is being handled */
-
- /* Technically this is trigger related, but without this
- * handler running there is currently no way for the interrupt
- * to clear.
- */
-}
-
/**
* adis16400_spi_read_burst() - read all data registers
* @dev: device associated with child of actual device (iio_dev or iio_trig)
{
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
- struct adis16400_state *st = iio_dev_get_devdata(indio_dev);
+ struct adis16400_state *st = iio_priv(indio_dev);
u32 old_speed_hz = st->us->max_speed_hz;
int ret;
return ret;
}
+static const u16 read_all_tx_array[] = {
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_SUPPLY_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_XGYRO_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_YGYRO_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_ZGYRO_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_XACCL_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_YACCL_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_ZACCL_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16350_XTEMP_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16350_YTEMP_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16350_ZTEMP_OUT)),
+ cpu_to_be16(ADIS16400_READ_REG(ADIS16400_AUX_ADC)),
+};
+
+static int adis16350_spi_read_all(struct device *dev, u8 *rx)
+{
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
+ struct adis16400_state *st = iio_priv(indio_dev);
+
+ struct spi_message msg;
+ int i, j = 0, ret;
+ struct spi_transfer *xfers;
+
+ xfers = kzalloc(sizeof(*xfers)*indio_dev->ring->scan_count + 1,
+ GFP_KERNEL);
+ if (xfers == NULL)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(read_all_tx_array); i++)
+ if (indio_dev->ring->scan_mask & (1 << i)) {
+ xfers[j].tx_buf = &read_all_tx_array[i];
+ xfers[j].bits_per_word = 16;
+ xfers[j].len = 2;
+ xfers[j + 1].rx_buf = rx + j*2;
+ j++;
+ }
+ xfers[j].bits_per_word = 16;
+ xfers[j].len = 2;
+
+ spi_message_init(&msg);
+ for (j = 0; j < indio_dev->ring->scan_count + 1; j++)
+ spi_message_add_tail(&xfers[j], &msg);
+
+ ret = spi_sync(st->us, &msg);
+ kfree(xfers);
+
+ return ret;
+}
+
/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device
* specific to be rolled into the core.
*/
-static void adis16400_trigger_bh_to_ring(struct work_struct *work_s)
+static irqreturn_t adis16400_trigger_handler(int irq, void *p)
{
- struct adis16400_state *st
- = container_of(work_s, struct adis16400_state,
- work_trigger_to_ring);
- struct iio_ring_buffer *ring = st->indio_dev->ring;
-
- int i = 0, j;
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->private_data;
+ struct adis16400_state *st = iio_priv(indio_dev);
+ struct iio_ring_buffer *ring = indio_dev->ring;
+ int i = 0, j, ret = 0;
s16 *data;
- size_t datasize = ring->access.get_bytes_per_datum(ring);
+ size_t datasize = ring->access->get_bytes_per_datum(ring);
unsigned long mask = ring->scan_mask;
data = kmalloc(datasize , GFP_KERNEL);
if (data == NULL) {
dev_err(&st->us->dev, "memory alloc failed in ring bh");
- return;
+ return -ENOMEM;
}
- if (ring->scan_count)
- if (adis16400_spi_read_burst(&st->indio_dev->dev, st->rx) >= 0)
- for (; i < ring->scan_count; i++) {
+ if (ring->scan_count) {
+ if (st->variant->flags & ADIS16400_NO_BURST) {
+ ret = adis16350_spi_read_all(&indio_dev->dev, st->rx);
+ if (ret < 0)
+ goto err;
+ for (; i < ring->scan_count; i++)
+ data[i] = *(s16 *)(st->rx + i*2);
+ } else {
+ ret = adis16400_spi_read_burst(&indio_dev->dev, st->rx);
+ if (ret < 0)
+ goto err;
+ for (; i < indio_dev->ring->scan_count; i++) {
j = __ffs(mask);
mask &= ~(1 << j);
- data[i] = be16_to_cpup(
+ data[i] = be16_to_cpup(
(__be16 *)&(st->rx[j*2]));
}
-
+ }
+ }
/* Guaranteed to be aligned with 8 byte boundary */
if (ring->scan_timestamp)
- *((s64 *)(data + ((i + 3)/4)*4)) = st->last_timestamp;
+ *((s64 *)(data + ((i + 3)/4)*4)) = pf->timestamp;
+ ring->access->store_to(indio_dev->ring, (u8 *) data, pf->timestamp);
- ring->access.store_to(ring,
- (u8 *) data,
- st->last_timestamp);
+ iio_trigger_notify_done(indio_dev->trig);
- iio_trigger_notify_done(st->indio_dev->trig);
kfree(data);
+ return IRQ_HANDLED;
- return;
+err:
+ kfree(data);
+ return ret;
}
void adis16400_unconfigure_ring(struct iio_dev *indio_dev)
{
- kfree(indio_dev->pollfunc);
+ iio_dealloc_pollfunc(indio_dev->pollfunc);
iio_sw_rb_free(indio_dev->ring);
}
+static const struct iio_ring_setup_ops adis16400_ring_setup_ops = {
+ .preenable = &iio_sw_ring_preenable,
+ .postenable = &iio_triggered_ring_postenable,
+ .predisable = &iio_triggered_ring_predisable,
+};
+
int adis16400_configure_ring(struct iio_dev *indio_dev)
{
int ret = 0;
- struct adis16400_state *st = indio_dev->dev_data;
+ struct adis16400_state *st = iio_priv(indio_dev);
struct iio_ring_buffer *ring;
- INIT_WORK(&st->work_trigger_to_ring, adis16400_trigger_bh_to_ring);
ring = iio_sw_rb_allocate(indio_dev);
if (!ring) {
}
indio_dev->ring = ring;
/* Effectively select the ring buffer implementation */
- iio_ring_sw_register_funcs(&ring->access);
+ ring->access = &ring_sw_access_funcs;
ring->bpe = 2;
- ring->scan_el_attrs = &adis16400_scan_el_group;
ring->scan_timestamp = true;
- ring->preenable = &iio_sw_ring_preenable;
- ring->postenable = &iio_triggered_ring_postenable;
- ring->predisable = &iio_triggered_ring_predisable;
+ ring->setup_ops = &adis16400_ring_setup_ops;
ring->owner = THIS_MODULE;
-
/* Set default scan mode */
- iio_scan_mask_set(ring, iio_scan_el_in0_supply.number);
- iio_scan_mask_set(ring, iio_scan_el_gyro_x.number);
- iio_scan_mask_set(ring, iio_scan_el_gyro_y.number);
- iio_scan_mask_set(ring, iio_scan_el_gyro_z.number);
- iio_scan_mask_set(ring, iio_scan_el_accel_x.number);
- iio_scan_mask_set(ring, iio_scan_el_accel_y.number);
- iio_scan_mask_set(ring, iio_scan_el_accel_z.number);
- iio_scan_mask_set(ring, iio_scan_el_magn_x.number);
- iio_scan_mask_set(ring, iio_scan_el_magn_y.number);
- iio_scan_mask_set(ring, iio_scan_el_magn_z.number);
- iio_scan_mask_set(ring, iio_scan_el_temp.number);
- iio_scan_mask_set(ring, iio_scan_el_in1.number);
-
- ret = iio_alloc_pollfunc(indio_dev, NULL, &adis16400_poll_func_th);
- if (ret)
+ ring->scan_mask = st->variant->default_scan_mask;
+ ring->scan_count = hweight_long(st->variant->default_scan_mask);
+
+ indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
+ &adis16400_trigger_handler,
+ IRQF_ONESHOT,
+ indio_dev,
+ "%s_consumer%d",
+ indio_dev->name,
+ indio_dev->id);
+ if (indio_dev->pollfunc == NULL) {
+ ret = -ENOMEM;
goto error_iio_sw_rb_free;
+ }
indio_dev->modes |= INDIO_RING_TRIGGERED;
return 0;
-
error_iio_sw_rb_free:
iio_sw_rb_free(indio_dev->ring);
return ret;
git.openpandora.org / pandora-kernel.git / blobdiff