From 3faa4d3f88d85cdf5de26bd6e52073071cc24b07 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Fri, 11 Feb 2011 14:07:43 +0000 Subject: [PATCH] staging:iio:meter remove stubs from ade7854. 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 Acked-by: Michael Hennerich Signed-off-by: Greg Kroah-Hartman --- 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 fe58103ed4ca..84da8fbde022 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@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 a13d5048cf42..866e585451f0 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@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 47690e521ec1..4ad84a3bb462 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 -- 2.20.1