Release 4.7 drivers/staging/iio/meter/ade7758_ring.c
/*
* ADE7758 Poly Phase Multifunction Energy Metering IC driver
*
* Copyright 2010-2011 Analog Devices Inc.
*
* Licensed under the GPL-2.
*/
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <asm/unaligned.h>
#include <linux/iio/iio.h>
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/trigger_consumer.h>
#include "ade7758.h"
/**
* ade7758_spi_read_burst() - read data registers
* @indio_dev: the IIO device
**/
static int ade7758_spi_read_burst(struct iio_dev *indio_dev)
{
struct ade7758_state *st = iio_priv(indio_dev);
int ret;
ret = spi_sync(st->us, &st->ring_msg);
if (ret)
dev_err(&st->us->dev, "problem when reading WFORM value\n");
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| barry song | barry song | 51 | 89.47% | 1 | 25.00% |
| michael hennerich | michael hennerich | 4 | 7.02% | 2 | 50.00% |
| lars-peter clausen | lars-peter clausen | 2 | 3.51% | 1 | 25.00% |
| Total | 57 | 100.00% | 4 | 100.00% |
static int ade7758_write_waveform_type(struct device *dev, unsigned int type)
{
int ret;
u8 reg;
ret = ade7758_spi_read_reg_8(dev,
ADE7758_WAVMODE,
®);
if (ret)
goto out;
reg &= ~0x1F;
reg |= type & 0x1F;
ret = ade7758_spi_write_reg_8(dev,
ADE7758_WAVMODE,
reg);
out:
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 66 | 98.51% | 1 | 50.00% |
| alison schofield | alison schofield | 1 | 1.49% | 1 | 50.00% |
| Total | 67 | 100.00% | 2 | 100.00% |
/* Whilst this makes a lot of calls to iio_sw_ring functions - it is too device
* specific to be rolled into the core.
*/
static irqreturn_t ade7758_trigger_handler(int irq, void *p)
{
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct ade7758_state *st = iio_priv(indio_dev);
s64 dat64[2];
u32 *dat32 = (u32 *)dat64;
if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
if (ade7758_spi_read_burst(indio_dev) >= 0)
*dat32 = get_unaligned_be32(&st->rx_buf[5]) & 0xFFFFFF;
iio_push_to_buffers_with_timestamp(indio_dev, dat64, pf->timestamp);
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| barry song | barry song | 46 | 40.00% | 1 | 12.50% |
| jonathan cameron | jonathan cameron | 43 | 37.39% | 4 | 50.00% |
| michael hennerich | michael hennerich | 22 | 19.13% | 2 | 25.00% |
| lars-peter clausen | lars-peter clausen | 4 | 3.48% | 1 | 12.50% |
| Total | 115 | 100.00% | 8 | 100.00% |
/**
* ade7758_ring_preenable() setup the parameters of the ring before enabling
*
* The complex nature of the setting of the number of bytes per datum is due
* to this driver currently ensuring that the timestamp is stored at an 8
* byte boundary.
**/
static int ade7758_ring_preenable(struct iio_dev *indio_dev)
{
unsigned int channel;
if (bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength))
return -EINVAL;
channel = find_first_bit(indio_dev->active_scan_mask,
indio_dev->masklength);
ade7758_write_waveform_type(&indio_dev->dev,
indio_dev->channels[channel].address);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 34 | 52.31% | 1 | 16.67% |
| jonathan cameron | jonathan cameron | 15 | 23.08% | 2 | 33.33% |
| barry song | barry song | 13 | 20.00% | 1 | 16.67% |
| lars-peter clausen | lars-peter clausen | 2 | 3.08% | 1 | 16.67% |
| alison schofield | alison schofield | 1 | 1.54% | 1 | 16.67% |
| Total | 65 | 100.00% | 6 | 100.00% |
static const struct iio_buffer_setup_ops ade7758_ring_setup_ops = {
.preenable = &ade7758_ring_preenable,
.postenable = &iio_triggered_buffer_postenable,
.predisable = &iio_triggered_buffer_predisable,
.validate_scan_mask = &iio_validate_scan_mask_onehot,
};
void ade7758_unconfigure_ring(struct iio_dev *indio_dev)
{
iio_dealloc_pollfunc(indio_dev->pollfunc);
iio_kfifo_free(indio_dev->buffer);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 20 | 83.33% | 1 | 20.00% |
| jonathan cameron | jonathan cameron | 3 | 12.50% | 3 | 60.00% |
| barry song | barry song | 1 | 4.17% | 1 | 20.00% |
| Total | 24 | 100.00% | 5 | 100.00% |
int ade7758_configure_ring(struct iio_dev *indio_dev)
{
struct ade7758_state *st = iio_priv(indio_dev);
struct iio_buffer *buffer;
int ret = 0;
buffer = iio_kfifo_allocate();
if (!buffer)
return -ENOMEM;
iio_device_attach_buffer(indio_dev, buffer);
indio_dev->setup_ops = &ade7758_ring_setup_ops;
indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
&ade7758_trigger_handler,
0,
indio_dev,
"ade7759_consumer%d",
indio_dev->id);
if (!indio_dev->pollfunc) {
ret = -ENOMEM;
goto error_iio_kfifo_free;
}
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
st->tx_buf[0] = ADE7758_READ_REG(ADE7758_RSTATUS);
st->tx_buf[1] = 0;
st->tx_buf[2] = 0;
st->tx_buf[3] = 0;
st->tx_buf[4] = ADE7758_READ_REG(ADE7758_WFORM);
st->tx_buf[5] = 0;
st->tx_buf[6] = 0;
st->tx_buf[7] = 0;
/* build spi ring message */
st->ring_xfer[0].tx_buf = &st->tx_buf[0];
st->ring_xfer[0].len = 1;
st->ring_xfer[0].bits_per_word = 8;
st->ring_xfer[0].delay_usecs = 4;
st->ring_xfer[1].rx_buf = &st->rx_buf[1];
st->ring_xfer[1].len = 3;
st->ring_xfer[1].bits_per_word = 8;
st->ring_xfer[1].cs_change = 1;
st->ring_xfer[2].tx_buf = &st->tx_buf[4];
st->ring_xfer[2].len = 1;
st->ring_xfer[2].bits_per_word = 8;
st->ring_xfer[2].delay_usecs = 1;
st->ring_xfer[3].rx_buf = &st->rx_buf[5];
st->ring_xfer[3].len = 3;
st->ring_xfer[3].bits_per_word = 8;
spi_message_init(&st->ring_msg);
spi_message_add_tail(&st->ring_xfer[0], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[1], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[2], &st->ring_msg);
spi_message_add_tail(&st->ring_xfer[3], &st->ring_msg);
return 0;
error_iio_kfifo_free:
iio_kfifo_free(indio_dev->buffer);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 381 | 83.01% | 2 | 15.38% |
| jonathan cameron | jonathan cameron | 40 | 8.71% | 6 | 46.15% |
| barry song | barry song | 23 | 5.01% | 1 | 7.69% |
| lars-peter clausen | lars-peter clausen | 12 | 2.61% | 1 | 7.69% |
| cristina opriceana | cristina opriceana | 1 | 0.22% | 1 | 7.69% |
| karol wrona | karol wrona | 1 | 0.22% | 1 | 7.69% |
| tina johnson | tina johnson | 1 | 0.22% | 1 | 7.69% |
| Total | 459 | 100.00% | 13 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| michael hennerich | michael hennerich | 531 | 62.25% | 2 | 7.41% |
| barry song | barry song | 155 | 18.17% | 1 | 3.70% |
| jonathan cameron | jonathan cameron | 130 | 15.24% | 12 | 44.44% |
| lars-peter clausen | lars-peter clausen | 27 | 3.17% | 5 | 18.52% |
| paul gortmaker | paul gortmaker | 3 | 0.35% | 1 | 3.70% |
| alison schofield | alison schofield | 2 | 0.23% | 1 | 3.70% |
| peter meerwald | peter meerwald | 1 | 0.12% | 1 | 3.70% |
| karol wrona | karol wrona | 1 | 0.12% | 1 | 3.70% |
| cristina opriceana | cristina opriceana | 1 | 0.12% | 1 | 3.70% |
| tina johnson | tina johnson | 1 | 0.12% | 1 | 3.70% |
| justin mattock | justin mattock | 1 | 0.12% | 1 | 3.70% |
| Total | 853 | 100.00% | 27 | 100.00% |
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