From: Jonathan Cameron Date: Mon, 27 Jun 2011 12:07:46 +0000 (+0100) Subject: staging:iio:gyro:adis16260: allocate chip state with iio_dev and use iio_priv to... X-Git-Tag: next-20110726~5^2~454 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d088ab838859507c34191484cdf993105d2fa2b5;p=karo-tx-linux.git staging:iio:gyro:adis16260: allocate chip state with iio_dev and use iio_priv to access. Signed-off-by: Jonathan Cameron Acked-by: Michael Hennerich Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/iio/gyro/adis16260.h b/drivers/staging/iio/gyro/adis16260.h index 702dc982f62f..4059fe93f7c9 100644 --- a/drivers/staging/iio/gyro/adis16260.h +++ b/drivers/staging/iio/gyro/adis16260.h @@ -85,21 +85,19 @@ /** * struct adis16260_state - device instance specific data * @us: actual spi_device - * @indio_dev: industrial I/O device structure * @trig: data ready trigger registered with iio - * @tx: transmit buffer - * @rx: receive buffer * @buf_lock: mutex to protect tx and rx * @negate: negate the scale parameter + * @tx: transmit buffer + * @rx: receive buffer **/ struct adis16260_state { - struct spi_device *us; - struct iio_dev *indio_dev; - struct iio_trigger *trig; - u8 *tx; - u8 *rx; - struct mutex buf_lock; - unsigned negate:1; + struct spi_device *us; + struct iio_trigger *trig; + struct mutex buf_lock; + unsigned negate:1; + u8 tx[ADIS16260_MAX_TX] ____cacheline_aligned; + u8 rx[ADIS16260_MAX_RX]; }; int adis16260_set_irq(struct iio_dev *indio_dev, bool enable); diff --git a/drivers/staging/iio/gyro/adis16260_core.c b/drivers/staging/iio/gyro/adis16260_core.c index 3dc9a272749d..801c8202c546 100644 --- a/drivers/staging/iio/gyro/adis16260_core.c +++ b/drivers/staging/iio/gyro/adis16260_core.c @@ -41,7 +41,7 @@ static int adis16260_spi_write_reg_8(struct iio_dev *indio_dev, u8 val) { int ret; - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); mutex_lock(&st->buf_lock); st->tx[0] = ADIS16260_WRITE_REG(reg_address); @@ -66,7 +66,7 @@ static int adis16260_spi_write_reg_16(struct iio_dev *indio_dev, { int ret; struct spi_message msg; - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); struct spi_transfer xfers[] = { { .tx_buf = st->tx, @@ -109,7 +109,7 @@ static int adis16260_spi_read_reg_16(struct iio_dev *indio_dev, u16 *val) { struct spi_message msg; - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); int ret; struct spi_transfer xfers[] = { { @@ -152,7 +152,7 @@ static ssize_t adis16260_read_frequency_available(struct device *dev, char *buf) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); if (spi_get_device_id(st->us)->driver_data) return sprintf(buf, "%s\n", "0.129 ~ 256"); else @@ -164,7 +164,7 @@ static ssize_t adis16260_read_frequency(struct device *dev, char *buf) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); int ret, len = 0; u16 t; int sps; @@ -189,7 +189,7 @@ static ssize_t adis16260_write_frequency(struct device *dev, size_t len) { struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); long val; int ret; u8 t; @@ -435,7 +435,7 @@ static int adis16260_read_raw(struct iio_dev *indio_dev, int *val, int *val2, long mask) { - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); int ret; int bits; u8 addr; @@ -576,71 +576,58 @@ static int __devinit adis16260_probe(struct spi_device *spi) { int ret, regdone = 0; struct adis16260_platform_data *pd = spi->dev.platform_data; - struct adis16260_state *st = kzalloc(sizeof *st, GFP_KERNEL); - if (!st) { - ret = -ENOMEM; + struct adis16260_state *st; + struct iio_dev *indio_dev; + + /* setup the industrialio driver allocated elements */ + indio_dev = iio_allocate_device(sizeof(*st)); + if (indio_dev == NULL) { + ret = -ENOMEM; goto error_ret; } + st = iio_priv(indio_dev); if (pd) st->negate = pd->negate; /* this is only used for removal purposes */ spi_set_drvdata(spi, st); - /* Allocate the comms buffers */ - st->rx = kzalloc(sizeof(*st->rx)*ADIS16260_MAX_RX, GFP_KERNEL); - if (st->rx == NULL) { - ret = -ENOMEM; - goto error_free_st; - } - st->tx = kzalloc(sizeof(*st->tx)*ADIS16260_MAX_TX, GFP_KERNEL); - if (st->tx == NULL) { - ret = -ENOMEM; - goto error_free_rx; - } st->us = spi; mutex_init(&st->buf_lock); - /* setup the industrialio driver allocated elements */ - st->indio_dev = iio_allocate_device(0); - if (st->indio_dev == NULL) { - ret = -ENOMEM; - goto error_free_tx; - } - st->indio_dev->name = spi_get_device_id(st->us)->name; - st->indio_dev->dev.parent = &spi->dev; - st->indio_dev->info = &adis16260_info; - st->indio_dev->num_channels + indio_dev->name = spi_get_device_id(st->us)->name; + indio_dev->dev.parent = &spi->dev; + indio_dev->info = &adis16260_info; + indio_dev->num_channels = ARRAY_SIZE(adis16260_channels_x); if (pd && pd->direction) switch (pd->direction) { case 'x': - st->indio_dev->channels = adis16260_channels_x; + indio_dev->channels = adis16260_channels_x; break; case 'y': - st->indio_dev->channels = adis16260_channels_y; + indio_dev->channels = adis16260_channels_y; break; case 'z': - st->indio_dev->channels = adis16260_channels_z; + indio_dev->channels = adis16260_channels_z; break; default: return -EINVAL; } else - st->indio_dev->channels = adis16260_channels_x; + indio_dev->channels = adis16260_channels_x; - st->indio_dev->dev_data = (void *)(st); - st->indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->modes = INDIO_DIRECT_MODE; - ret = adis16260_configure_ring(st->indio_dev); + ret = adis16260_configure_ring(indio_dev); if (ret) goto error_free_dev; - ret = iio_device_register(st->indio_dev); + ret = iio_device_register(indio_dev); if (ret) goto error_unreg_ring_funcs; regdone = 1; - ret = iio_ring_buffer_register_ex(st->indio_dev->ring, 0, - st->indio_dev->channels, + ret = iio_ring_buffer_register_ex(indio_dev->ring, 0, + indio_dev->channels, ARRAY_SIZE(adis16260_channels_x)); if (ret) { printk(KERN_ERR "failed to initialize the ring\n"); @@ -648,34 +635,28 @@ static int __devinit adis16260_probe(struct spi_device *spi) } if (spi->irq) { - ret = adis16260_probe_trigger(st->indio_dev); + ret = adis16260_probe_trigger(indio_dev); if (ret) goto error_uninitialize_ring; } /* Get the device into a sane initial state */ - ret = adis16260_initial_setup(st->indio_dev); + ret = adis16260_initial_setup(indio_dev); if (ret) goto error_remove_trigger; return 0; error_remove_trigger: - adis16260_remove_trigger(st->indio_dev); + adis16260_remove_trigger(indio_dev); error_uninitialize_ring: - iio_ring_buffer_unregister(st->indio_dev->ring); + iio_ring_buffer_unregister(indio_dev->ring); error_unreg_ring_funcs: - adis16260_unconfigure_ring(st->indio_dev); + adis16260_unconfigure_ring(indio_dev); error_free_dev: if (regdone) - iio_device_unregister(st->indio_dev); + iio_device_unregister(indio_dev); else - iio_free_device(st->indio_dev); -error_free_tx: - kfree(st->tx); -error_free_rx: - kfree(st->rx); -error_free_st: - kfree(st); + iio_free_device(indio_dev); error_ret: return ret; } @@ -683,8 +664,7 @@ error_ret: static int adis16260_remove(struct spi_device *spi) { int ret; - struct adis16260_state *st = spi_get_drvdata(spi); - struct iio_dev *indio_dev = st->indio_dev; + struct iio_dev *indio_dev = spi_get_drvdata(spi); ret = adis16260_stop_device(indio_dev); if (ret) @@ -693,13 +673,9 @@ static int adis16260_remove(struct spi_device *spi) flush_scheduled_work(); adis16260_remove_trigger(indio_dev); - - iio_ring_buffer_unregister(st->indio_dev->ring); + iio_ring_buffer_unregister(indio_dev->ring); iio_device_unregister(indio_dev); adis16260_unconfigure_ring(indio_dev); - kfree(st->tx); - kfree(st->rx); - kfree(st); err_ret: return ret; diff --git a/drivers/staging/iio/gyro/adis16260_ring.c b/drivers/staging/iio/gyro/adis16260_ring.c index a0925044eaa5..a4df8b32251e 100644 --- a/drivers/staging/iio/gyro/adis16260_ring.c +++ b/drivers/staging/iio/gyro/adis16260_ring.c @@ -17,7 +17,6 @@ #include "../trigger.h" #include "adis16260.h" - /** * adis16260_read_ring_data() read data registers which will be placed into ring * @dev: device associated with child of actual device (iio_dev or iio_trig) @@ -27,7 +26,7 @@ static int adis16260_read_ring_data(struct device *dev, u8 *rx) { struct spi_message msg; struct iio_dev *indio_dev = dev_get_drvdata(dev); - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); struct spi_transfer xfers[ADIS16260_OUTPUTS + 1]; int ret; int i; @@ -70,7 +69,7 @@ static irqreturn_t adis16260_trigger_handler(int irq, void *p) { struct iio_poll_func *pf = p; struct iio_dev *indio_dev = pf->private_data; - struct adis16260_state *st = iio_dev_get_devdata(indio_dev); + struct adis16260_state *st = iio_priv(indio_dev); struct iio_ring_buffer *ring = indio_dev->ring; int i = 0; s16 *data; @@ -83,7 +82,7 @@ static irqreturn_t adis16260_trigger_handler(int irq, void *p) } if (ring->scan_count && - adis16260_read_ring_data(&st->indio_dev->dev, st->rx) >= 0) + adis16260_read_ring_data(&indio_dev->dev, st->rx) >= 0) for (; i < ring->scan_count; i++) data[i] = be16_to_cpup((__be16 *)&(st->rx[i*2])); @@ -93,7 +92,7 @@ static irqreturn_t adis16260_trigger_handler(int irq, void *p) ring->access->store_to(ring, (u8 *)data, pf->timestamp); - iio_trigger_notify_done(st->indio_dev->trig); + iio_trigger_notify_done(indio_dev->trig); kfree(data); return IRQ_HANDLED; diff --git a/drivers/staging/iio/gyro/adis16260_trigger.c b/drivers/staging/iio/gyro/adis16260_trigger.c index 4f10fb543356..01094d0e714a 100644 --- a/drivers/staging/iio/gyro/adis16260_trigger.c +++ b/drivers/staging/iio/gyro/adis16260_trigger.c @@ -18,8 +18,7 @@ static int adis16260_data_rdy_trigger_set_state(struct iio_trigger *trig, bool state) { - struct adis16260_state *st = trig->private_data; - struct iio_dev *indio_dev = st->indio_dev; + struct iio_dev *indio_dev = trig->private_data; dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state); return adis16260_set_irq(indio_dev, state); @@ -28,7 +27,7 @@ static int adis16260_data_rdy_trigger_set_state(struct iio_trigger *trig, int adis16260_probe_trigger(struct iio_dev *indio_dev) { int ret; - struct adis16260_state *st = indio_dev->dev_data; + struct adis16260_state *st = iio_priv(indio_dev); st->trig = iio_allocate_trigger("%s-dev%d", spi_get_device_id(st->us)->name, @@ -48,7 +47,7 @@ int adis16260_probe_trigger(struct iio_dev *indio_dev) st->trig->dev.parent = &st->us->dev; st->trig->owner = THIS_MODULE; - st->trig->private_data = st; + st->trig->private_data = indio_dev; st->trig->set_trigger_state = &adis16260_data_rdy_trigger_set_state; ret = iio_trigger_register(st->trig); @@ -69,9 +68,9 @@ error_ret: void adis16260_remove_trigger(struct iio_dev *indio_dev) { - struct adis16260_state *state = indio_dev->dev_data; + struct adis16260_state *st = iio_priv(indio_dev); - iio_trigger_unregister(state->trig); - free_irq(state->us->irq, state->trig); - iio_free_trigger(state->trig); + iio_trigger_unregister(st->trig); + free_irq(st->us->irq, st->trig); + iio_free_trigger(st->trig); }