[PATCH 461/961] staging:iio:meter remove stubs from ade7854.
Greg Kroah-Hartman
gregkh at suse.de
Wed Mar 16 21:01:44 UTC 2011
From: Jonathan Cameron <jic23 at cam.ac.uk>
General cleanup and use of standard functions to simplfy some spi reads
as well.
Also added a device id table to the spi version.
Signed-off-by: Jonathan Cameron <jic23 at cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich at analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de>
---
drivers/staging/iio/meter/ade7854-spi.c | 120 +++++++++++++++++--------------
drivers/staging/iio/meter/ade7854.c | 78 +++-----------------
drivers/staging/iio/meter/ade7854.h | 69 ------------------
3 files changed, 76 insertions(+), 191 deletions(-)
diff --git a/drivers/staging/iio/meter/ade7854-spi.c b/drivers/staging/iio/meter/ade7854-spi.c
index fe58103e..84da8fb 100644
--- a/drivers/staging/iio/meter/ade7854-spi.c
+++ b/drivers/staging/iio/meter/ade7854-spi.c
@@ -22,12 +22,10 @@ static int ade7854_spi_write_reg_8(struct device *dev,
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 4,
- }
+ struct spi_transfer xfer = {
+ .tx_buf = st->tx,
+ .bits_per_word = 8,
+ .len = 4,
};
mutex_lock(&st->buf_lock);
@@ -37,7 +35,7 @@ static int ade7854_spi_write_reg_8(struct device *dev,
st->tx[3] = value & 0xFF;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfer, &msg);
ret = spi_sync(st->spi, &msg);
mutex_unlock(&st->buf_lock);
@@ -52,12 +50,10 @@ static int ade7854_spi_write_reg_16(struct device *dev,
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 5,
- }
+ struct spi_transfer xfer = {
+ .tx_buf = st->tx,
+ .bits_per_word = 8,
+ .len = 5,
};
mutex_lock(&st->buf_lock);
@@ -68,7 +64,7 @@ static int ade7854_spi_write_reg_16(struct device *dev,
st->tx[4] = value & 0xFF;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfer, &msg);
ret = spi_sync(st->spi, &msg);
mutex_unlock(&st->buf_lock);
@@ -83,12 +79,10 @@ static int ade7854_spi_write_reg_24(struct device *dev,
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 6,
- }
+ struct spi_transfer xfer = {
+ .tx_buf = st->tx,
+ .bits_per_word = 8,
+ .len = 6,
};
mutex_lock(&st->buf_lock);
@@ -100,7 +94,7 @@ static int ade7854_spi_write_reg_24(struct device *dev,
st->tx[5] = value & 0xFF;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfer, &msg);
ret = spi_sync(st->spi, &msg);
mutex_unlock(&st->buf_lock);
@@ -115,12 +109,10 @@ static int ade7854_spi_write_reg_32(struct device *dev,
struct spi_message msg;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
- struct spi_transfer xfers[] = {
- {
- .tx_buf = st->tx,
- .bits_per_word = 8,
- .len = 7,
- }
+ struct spi_transfer xfer = {
+ .tx_buf = st->tx,
+ .bits_per_word = 8,
+ .len = 7,
};
mutex_lock(&st->buf_lock);
@@ -133,7 +125,7 @@ static int ade7854_spi_write_reg_32(struct device *dev,
st->tx[6] = value & 0xFF;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfer, &msg);
ret = spi_sync(st->spi, &msg);
mutex_unlock(&st->buf_lock);
@@ -152,8 +144,12 @@ static int ade7854_spi_read_reg_8(struct device *dev,
{
.tx_buf = st->tx,
.bits_per_word = 8,
- .len = 4,
- },
+ .len = 3,
+ }, {
+ .rx_buf = st->rx,
+ .bits_per_word = 8,
+ .len = 1,
+ }
};
mutex_lock(&st->buf_lock);
@@ -161,17 +157,17 @@ static int ade7854_spi_read_reg_8(struct device *dev,
st->tx[0] = ADE7854_READ_REG;
st->tx[1] = (reg_address >> 8) & 0xFF;
st->tx[2] = reg_address & 0xFF;
- st->tx[3] = 0;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfers[0], &msg);
+ spi_message_add_tail(&xfers[1], &msg);
ret = spi_sync(st->spi, &msg);
if (ret) {
dev_err(&st->spi->dev, "problem when reading 8 bit register 0x%02X",
reg_address);
goto error_ret;
}
- *val = st->rx[3];
+ *val = st->rx[0];
error_ret:
mutex_unlock(&st->buf_lock);
@@ -190,26 +186,29 @@ static int ade7854_spi_read_reg_16(struct device *dev,
{
.tx_buf = st->tx,
.bits_per_word = 8,
- .len = 5,
- },
+ .len = 3,
+ }, {
+ .rx_buf = st->rx,
+ .bits_per_word = 8,
+ .len = 2,
+ }
};
mutex_lock(&st->buf_lock);
st->tx[0] = ADE7854_READ_REG;
st->tx[1] = (reg_address >> 8) & 0xFF;
st->tx[2] = reg_address & 0xFF;
- st->tx[3] = 0;
- st->tx[4] = 0;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfers[0], &msg);
+ spi_message_add_tail(&xfers[1], &msg);
ret = spi_sync(st->spi, &msg);
if (ret) {
dev_err(&st->spi->dev, "problem when reading 16 bit register 0x%02X",
reg_address);
goto error_ret;
}
- *val = (st->rx[3] << 8) | st->rx[4];
+ *val = be16_to_cpup((const __be16 *)st->rx);
error_ret:
mutex_unlock(&st->buf_lock);
@@ -228,8 +227,12 @@ static int ade7854_spi_read_reg_24(struct device *dev,
{
.tx_buf = st->tx,
.bits_per_word = 8,
- .len = 6,
- },
+ .len = 3,
+ }, {
+ .rx_buf = st->rx,
+ .bits_per_word = 8,
+ .len = 3,
+ }
};
mutex_lock(&st->buf_lock);
@@ -237,19 +240,17 @@ static int ade7854_spi_read_reg_24(struct device *dev,
st->tx[0] = ADE7854_READ_REG;
st->tx[1] = (reg_address >> 8) & 0xFF;
st->tx[2] = reg_address & 0xFF;
- st->tx[3] = 0;
- st->tx[4] = 0;
- st->tx[5] = 0;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfers[0], &msg);
+ spi_message_add_tail(&xfers[1], &msg);
ret = spi_sync(st->spi, &msg);
if (ret) {
dev_err(&st->spi->dev, "problem when reading 24 bit register 0x%02X",
reg_address);
goto error_ret;
}
- *val = (st->rx[3] << 16) | (st->rx[4] << 8) | st->rx[5];
+ *val = (st->rx[0] << 16) | (st->rx[1] << 8) | st->rx[2];
error_ret:
mutex_unlock(&st->buf_lock);
@@ -268,8 +269,12 @@ static int ade7854_spi_read_reg_32(struct device *dev,
{
.tx_buf = st->tx,
.bits_per_word = 8,
- .len = 7,
- },
+ .len = 3,
+ }, {
+ .rx_buf = st->rx,
+ .bits_per_word = 8,
+ .len = 4,
+ }
};
mutex_lock(&st->buf_lock);
@@ -277,20 +282,17 @@ static int ade7854_spi_read_reg_32(struct device *dev,
st->tx[0] = ADE7854_READ_REG;
st->tx[1] = (reg_address >> 8) & 0xFF;
st->tx[2] = reg_address & 0xFF;
- st->tx[3] = 0;
- st->tx[4] = 0;
- st->tx[5] = 0;
- st->tx[6] = 0;
spi_message_init(&msg);
- spi_message_add_tail(xfers, &msg);
+ spi_message_add_tail(&xfers[0], &msg);
+ spi_message_add_tail(&xfers[1], &msg);
ret = spi_sync(st->spi, &msg);
if (ret) {
dev_err(&st->spi->dev, "problem when reading 32 bit register 0x%02X",
reg_address);
goto error_ret;
}
- *val = (st->rx[3] << 24) | (st->rx[4] << 16) | (st->rx[5] << 8) | st->rx[6];
+ *val = be32_to_cpup((const __be32 *)st->rx);
error_ret:
mutex_unlock(&st->buf_lock);
@@ -333,6 +335,13 @@ static int ade7854_spi_remove(struct spi_device *spi)
return 0;
}
+static const struct spi_device_id ade7854_id[] = {
+ { "ade7854", 0 },
+ { "ade7858", 0 },
+ { "ade7868", 0 },
+ { "ade7878", 0 },
+ { }
+};
static struct spi_driver ade7854_driver = {
.driver = {
@@ -341,6 +350,7 @@ static struct spi_driver ade7854_driver = {
},
.probe = ade7854_spi_probe,
.remove = __devexit_p(ade7854_spi_remove),
+ .id_table = ade7854_id,
};
static __init int ade7854_init(void)
@@ -356,5 +366,5 @@ static __exit void ade7854_exit(void)
module_exit(ade7854_exit);
MODULE_AUTHOR("Barry Song <21cnbao at gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC SPI Driver");
+MODULE_DESCRIPTION("Analog Devices ADE7854/58/68/78 SPI Driver");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c
index a13d504..866e585 100644
--- a/drivers/staging/iio/meter/ade7854.c
+++ b/drivers/staging/iio/meter/ade7854.c
@@ -61,7 +61,7 @@ static ssize_t ade7854_read_24bit(struct device *dev,
char *buf)
{
int ret;
- u32 val = 0;
+ u32 val;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
@@ -70,7 +70,7 @@ static ssize_t ade7854_read_24bit(struct device *dev,
if (ret)
return ret;
- return sprintf(buf, "%u\n", val & 0xFFFFFF);
+ return sprintf(buf, "%u\n", val);
}
static ssize_t ade7854_read_32bit(struct device *dev,
@@ -178,15 +178,12 @@ static int ade7854_reset(struct device *dev)
{
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct ade7854_state *st = iio_dev_get_devdata(indio_dev);
-
- int ret;
u16 val;
st->read_reg_16(dev, ADE7854_CONFIG, &val);
val |= 1 << 7; /* Software Chip Reset */
- ret = st->write_reg_16(dev, ADE7854_CONFIG, val);
- return ret;
+ return st->write_reg_16(dev, ADE7854_CONFIG, val);
}
@@ -477,14 +474,6 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("8000");
static IIO_CONST_ATTR(name, "ade7854");
-static struct attribute *ade7854_event_attributes[] = {
- NULL
-};
-
-static struct attribute_group ade7854_event_attribute_group = {
- .attrs = ade7854_event_attributes,
-};
-
static struct attribute *ade7854_attributes[] = {
&iio_dev_attr_aigain.dev_attr.attr,
&iio_dev_attr_bigain.dev_attr.attr,
@@ -564,7 +553,7 @@ static const struct attribute_group ade7854_attribute_group = {
int ade7854_probe(struct ade7854_state *st, struct device *dev)
{
- int ret, regdone = 0;
+ int ret;
/* Allocate the comms buffers */
st->rx = kzalloc(sizeof(*st->rx)*ADE7854_MAX_RX, GFP_KERNEL);
@@ -586,71 +575,34 @@ int ade7854_probe(struct ade7854_state *st, struct device *dev)
}
st->indio_dev->dev.parent = dev;
- st->indio_dev->num_interrupt_lines = 1;
- st->indio_dev->event_attrs = &ade7854_event_attribute_group;
st->indio_dev->attrs = &ade7854_attribute_group;
st->indio_dev->dev_data = (void *)(st);
st->indio_dev->driver_module = THIS_MODULE;
st->indio_dev->modes = INDIO_DIRECT_MODE;
- ret = ade7854_configure_ring(st->indio_dev);
- if (ret)
- goto error_free_dev;
-
ret = iio_device_register(st->indio_dev);
if (ret)
- goto error_unreg_ring_funcs;
- regdone = 1;
-
- ret = ade7854_initialize_ring(st->indio_dev->ring);
- if (ret) {
- printk(KERN_ERR "failed to initialize the ring\n");
- goto error_unreg_ring_funcs;
- }
+ goto error_free_dev;
- if (st->irq) {
- ret = iio_register_interrupt_line(st->irq,
- st->indio_dev,
- 0,
- IRQF_TRIGGER_FALLING,
- "ade7854");
- if (ret)
- goto error_uninitialize_ring;
-
- ret = ade7854_probe_trigger(st->indio_dev);
- if (ret)
- goto error_unregister_line;
- }
/* Get the device into a sane initial state */
ret = ade7854_initial_setup(st);
if (ret)
- goto error_remove_trigger;
+ goto error_unreg_dev;
return 0;
-error_remove_trigger:
- if (st->indio_dev->modes & INDIO_RING_TRIGGERED)
- ade7854_remove_trigger(st->indio_dev);
-error_unregister_line:
- if (st->indio_dev->modes & INDIO_RING_TRIGGERED)
- iio_unregister_interrupt_line(st->indio_dev, 0);
-error_uninitialize_ring:
- ade7854_uninitialize_ring(st->indio_dev->ring);
-error_unreg_ring_funcs:
- ade7854_unconfigure_ring(st->indio_dev);
+error_unreg_dev:
+ iio_device_unregister(st->indio_dev);
error_free_dev:
- if (regdone)
- iio_device_unregister(st->indio_dev);
- else
- iio_free_device(st->indio_dev);
+ iio_free_device(st->indio_dev);
error_free_tx:
kfree(st->tx);
error_free_rx:
kfree(st->rx);
error_free_st:
kfree(st);
- return ret;
+ return ret;
}
EXPORT_SYMBOL(ade7854_probe);
@@ -658,14 +610,6 @@ int ade7854_remove(struct ade7854_state *st)
{
struct iio_dev *indio_dev = st->indio_dev;
- flush_scheduled_work();
-
- ade7854_remove_trigger(indio_dev);
- if (st->irq)
- iio_unregister_interrupt_line(indio_dev, 0);
-
- ade7854_uninitialize_ring(indio_dev->ring);
- ade7854_unconfigure_ring(indio_dev);
iio_device_unregister(indio_dev);
kfree(st->tx);
kfree(st->rx);
@@ -676,5 +620,5 @@ int ade7854_remove(struct ade7854_state *st)
EXPORT_SYMBOL(ade7854_remove);
MODULE_AUTHOR("Barry Song <21cnbao at gmail.com>");
-MODULE_DESCRIPTION("Analog Devices ADE7854/58/68/78 Polyphase Multifunction Energy Metering IC Driver");
+MODULE_DESCRIPTION("Analog Devices ADE7854/58/68/78 Polyphase Energy Meter");
MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/meter/ade7854.h b/drivers/staging/iio/meter/ade7854.h
index 47690e5..4ad84a3 100644
--- a/drivers/staging/iio/meter/ade7854.h
+++ b/drivers/staging/iio/meter/ade7854.h
@@ -147,11 +147,7 @@
/**
* struct ade7854_state - device instance specific data
* @spi: actual spi_device
- * @work_trigger_to_ring: bh for triggered event handling
- * @inter: used to check if new interrupt has been triggered
- * @last_timestamp: passing timestamp from th to bh of interrupt handler
* @indio_dev: industrial I/O device structure
- * @trig: data ready trigger registered with iio
* @tx: transmit buffer
* @rx: recieve buffer
* @buf_lock: mutex to protect tx and rx
@@ -159,10 +155,7 @@
struct ade7854_state {
struct spi_device *spi;
struct i2c_client *i2c;
- struct work_struct work_trigger_to_ring;
- s64 last_timestamp;
struct iio_dev *indio_dev;
- struct iio_trigger *trig;
u8 *tx;
u8 *rx;
int (*read_reg_8) (struct device *, u16, u8 *);
@@ -180,66 +173,4 @@ struct ade7854_state {
extern int ade7854_probe(struct ade7854_state *st, struct device *dev);
extern int ade7854_remove(struct ade7854_state *st);
-#if defined(CONFIG_IIO_RING_BUFFER) && defined(THIS_HAS_RING_BUFFER_SUPPORT)
-/* At the moment triggers are only used for ring buffer
- * filling. This may change!
- */
-
-enum ade7854_scan {
- ADE7854_SCAN_PHA_V,
- ADE7854_SCAN_PHB_V,
- ADE7854_SCAN_PHC_V,
- ADE7854_SCAN_PHA_I,
- ADE7854_SCAN_PHB_I,
- ADE7854_SCAN_PHC_I,
-};
-
-void ade7854_remove_trigger(struct iio_dev *indio_dev);
-int ade7854_probe_trigger(struct iio_dev *indio_dev);
-
-ssize_t ade7854_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf);
-
-
-int ade7854_configure_ring(struct iio_dev *indio_dev);
-void ade7854_unconfigure_ring(struct iio_dev *indio_dev);
-
-int ade7854_initialize_ring(struct iio_ring_buffer *ring);
-void ade7854_uninitialize_ring(struct iio_ring_buffer *ring);
-#else /* CONFIG_IIO_RING_BUFFER */
-
-static inline void ade7854_remove_trigger(struct iio_dev *indio_dev)
-{
-}
-static inline int ade7854_probe_trigger(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline ssize_t
-ade7854_read_data_from_ring(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return 0;
-}
-
-static inline int ade7854_configure_ring(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void ade7854_unconfigure_ring(struct iio_dev *indio_dev)
-{
-}
-static inline int ade7854_initialize_ring(struct iio_ring_buffer *ring)
-{
- return 0;
-}
-static inline void ade7854_uninitialize_ring(struct iio_ring_buffer *ring)
-{
-}
-#endif /* CONFIG_IIO_RING_BUFFER */
-
#endif
--
1.7.4.1
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