config AD799X
tristate "Analog Devices AD799x ADC driver"
depends on I2C
- select IIO_TRIGGER if IIO_BUFFER
- select AD799X_RING_BUFFER
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for Analog Devices:
ad7991, ad7995, ad7999, ad7992, ad7993, ad7994, ad7997, ad7998
i2c analog to digital converters (ADC). Provides direct access
via sysfs.
-config AD799X_RING_BUFFER
- bool "Analog Devices AD799x: use ring buffer"
- depends on AD799X
- select IIO_BUFFER
- select IIO_TRIGGERED_BUFFER
- help
- Say yes here to include ring buffer support in the AD799X
- ADC driver.
-
config AD7780
tristate "Analog Devices AD7780 and similar ADCs driver"
depends on SPI
obj-$(CONFIG_AD7606) += ad7606.o
ad799x-y := ad799x_core.o
-ad799x-$(CONFIG_AD799X_RING_BUFFER) += ad799x_ring.o
obj-$(CONFIG_AD799X) += ad799x.o
obj-$(CONFIG_AD7291) += ad7291.o
+++ /dev/null
-/*
- * Copyright (C) 2010-2011 Michael Hennerich, Analog Devices Inc.
- * Copyright (C) 2008-2010 Jonathan Cameron
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * ad799x.h
- */
-
-#ifndef _AD799X_H_
-#define _AD799X_H_
-
-#define AD799X_CHANNEL_SHIFT 4
-#define AD799X_STORAGEBITS 16
-/*
- * AD7991, AD7995 and AD7999 defines
- */
-
-#define AD7991_REF_SEL 0x08
-#define AD7991_FLTR 0x04
-#define AD7991_BIT_TRIAL_DELAY 0x02
-#define AD7991_SAMPLE_DELAY 0x01
-
-/*
- * AD7992, AD7993, AD7994, AD7997 and AD7998 defines
- */
-
-#define AD7998_FLTR 0x08
-#define AD7998_ALERT_EN 0x04
-#define AD7998_BUSY_ALERT 0x02
-#define AD7998_BUSY_ALERT_POL 0x01
-
-#define AD7998_CONV_RES_REG 0x0
-#define AD7998_ALERT_STAT_REG 0x1
-#define AD7998_CONF_REG 0x2
-#define AD7998_CYCLE_TMR_REG 0x3
-
-#define AD7998_DATALOW_REG(x) ((x) * 3 + 0x4)
-#define AD7998_DATAHIGH_REG(x) ((x) * 3 + 0x5)
-#define AD7998_HYST_REG(x) ((x) * 3 + 0x6)
-
-#define AD7998_CYC_MASK 0x7
-#define AD7998_CYC_DIS 0x0
-#define AD7998_CYC_TCONF_32 0x1
-#define AD7998_CYC_TCONF_64 0x2
-#define AD7998_CYC_TCONF_128 0x3
-#define AD7998_CYC_TCONF_256 0x4
-#define AD7998_CYC_TCONF_512 0x5
-#define AD7998_CYC_TCONF_1024 0x6
-#define AD7998_CYC_TCONF_2048 0x7
-
-#define AD7998_ALERT_STAT_CLEAR 0xFF
-
-/*
- * AD7997 and AD7997 defines
- */
-
-#define AD7997_8_READ_SINGLE 0x80
-#define AD7997_8_READ_SEQUENCE 0x70
-/* TODO: move this into a common header */
-#define RES_MASK(bits) ((1 << (bits)) - 1)
-
-enum {
- ad7991,
- ad7995,
- ad7999,
- ad7992,
- ad7993,
- ad7994,
- ad7997,
- ad7998
-};
-
-struct ad799x_state;
-
-/**
- * struct ad799x_chip_info - chip specifc information
- * @channel: channel specification
- * @num_channels: number of channels
- * @monitor_mode: whether the chip supports monitor interrupts
- * @default_config: device default configuration
- * @event_attrs: pointer to the monitor event attribute group
- */
-
-struct ad799x_chip_info {
- struct iio_chan_spec channel[9];
- int num_channels;
- u16 default_config;
- const struct iio_info *info;
-};
-
-struct ad799x_state {
- struct i2c_client *client;
- const struct ad799x_chip_info *chip_info;
- struct regulator *reg;
- struct regulator *vref;
- unsigned id;
- u16 config;
-
- u8 *rx_buf;
- unsigned int transfer_size;
-};
-
-#ifdef CONFIG_AD799X_RING_BUFFER
-int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev);
-void ad799x_ring_cleanup(struct iio_dev *indio_dev);
-#else /* CONFIG_AD799X_RING_BUFFER */
-
-static inline int
-ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev)
-{
- return 0;
-}
-
-static inline void ad799x_ring_cleanup(struct iio_dev *indio_dev)
-{
-}
-#endif /* CONFIG_AD799X_RING_BUFFER */
-#endif /* _AD799X_H_ */
#include <linux/iio/sysfs.h>
#include <linux/iio/events.h>
#include <linux/iio/buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
-#include "ad799x.h"
+#define AD799X_CHANNEL_SHIFT 4
+#define AD799X_STORAGEBITS 16
+/*
+ * AD7991, AD7995 and AD7999 defines
+ */
+
+#define AD7991_REF_SEL 0x08
+#define AD7991_FLTR 0x04
+#define AD7991_BIT_TRIAL_DELAY 0x02
+#define AD7991_SAMPLE_DELAY 0x01
+
+/*
+ * AD7992, AD7993, AD7994, AD7997 and AD7998 defines
+ */
+
+#define AD7998_FLTR 0x08
+#define AD7998_ALERT_EN 0x04
+#define AD7998_BUSY_ALERT 0x02
+#define AD7998_BUSY_ALERT_POL 0x01
+
+#define AD7998_CONV_RES_REG 0x0
+#define AD7998_ALERT_STAT_REG 0x1
+#define AD7998_CONF_REG 0x2
+#define AD7998_CYCLE_TMR_REG 0x3
+
+#define AD7998_DATALOW_REG(x) ((x) * 3 + 0x4)
+#define AD7998_DATAHIGH_REG(x) ((x) * 3 + 0x5)
+#define AD7998_HYST_REG(x) ((x) * 3 + 0x6)
+
+#define AD7998_CYC_MASK 0x7
+#define AD7998_CYC_DIS 0x0
+#define AD7998_CYC_TCONF_32 0x1
+#define AD7998_CYC_TCONF_64 0x2
+#define AD7998_CYC_TCONF_128 0x3
+#define AD7998_CYC_TCONF_256 0x4
+#define AD7998_CYC_TCONF_512 0x5
+#define AD7998_CYC_TCONF_1024 0x6
+#define AD7998_CYC_TCONF_2048 0x7
+
+#define AD7998_ALERT_STAT_CLEAR 0xFF
+
+/*
+ * AD7997 and AD7997 defines
+ */
+
+#define AD7997_8_READ_SINGLE 0x80
+#define AD7997_8_READ_SEQUENCE 0x70
+/* TODO: move this into a common header */
+#define RES_MASK(bits) ((1 << (bits)) - 1)
+
+enum {
+ ad7991,
+ ad7995,
+ ad7999,
+ ad7992,
+ ad7993,
+ ad7994,
+ ad7997,
+ ad7998
+};
+
+/**
+ * struct ad799x_chip_info - chip specifc information
+ * @channel: channel specification
+ * @num_channels: number of channels
+ * @monitor_mode: whether the chip supports monitor interrupts
+ * @default_config: device default configuration
+ * @event_attrs: pointer to the monitor event attribute group
+ */
+struct ad799x_chip_info {
+ struct iio_chan_spec channel[9];
+ int num_channels;
+ u16 default_config;
+ const struct iio_info *info;
+};
+
+struct ad799x_state {
+ struct i2c_client *client;
+ const struct ad799x_chip_info *chip_info;
+ struct regulator *reg;
+ struct regulator *vref;
+ unsigned id;
+ u16 config;
+
+ u8 *rx_buf;
+ unsigned int transfer_size;
+};
+
+/**
+ * ad799x_trigger_handler() bh of trigger launched polling to ring buffer
+ *
+ * Currently there is no option in this driver to disable the saving of
+ * timestamps within the ring.
+ **/
+static irqreturn_t ad799x_trigger_handler(int irq, void *p)
+{
+ struct iio_poll_func *pf = p;
+ struct iio_dev *indio_dev = pf->indio_dev;
+ struct ad799x_state *st = iio_priv(indio_dev);
+ int b_sent;
+ u8 cmd;
+
+ switch (st->id) {
+ case ad7991:
+ case ad7995:
+ case ad7999:
+ cmd = st->config |
+ (*indio_dev->active_scan_mask << AD799X_CHANNEL_SHIFT);
+ break;
+ case ad7992:
+ case ad7993:
+ case ad7994:
+ cmd = (*indio_dev->active_scan_mask << AD799X_CHANNEL_SHIFT) |
+ AD7998_CONV_RES_REG;
+ break;
+ case ad7997:
+ case ad7998:
+ cmd = AD7997_8_READ_SEQUENCE | AD7998_CONV_RES_REG;
+ break;
+ default:
+ cmd = 0;
+ }
+
+ b_sent = i2c_smbus_read_i2c_block_data(st->client,
+ cmd, st->transfer_size, st->rx_buf);
+ if (b_sent < 0)
+ goto out;
+
+ iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
+ iio_get_time_ns());
+out:
+ iio_trigger_notify_done(indio_dev->trig);
+
+ return IRQ_HANDLED;
+}
/*
* ad799x register access by I2C
indio_dev->channels = st->chip_info->channel;
indio_dev->num_channels = st->chip_info->num_channels;
- ret = ad799x_register_ring_funcs_and_init(indio_dev);
+ ret = iio_triggered_buffer_setup(indio_dev, NULL,
+ &ad799x_trigger_handler, NULL);
if (ret)
goto error_disable_reg;
return 0;
error_cleanup_ring:
- ad799x_ring_cleanup(indio_dev);
+ iio_triggered_buffer_cleanup(indio_dev);
error_disable_reg:
if (!IS_ERR(st->vref))
regulator_disable(st->vref);
iio_device_unregister(indio_dev);
- ad799x_ring_cleanup(indio_dev);
+ iio_triggered_buffer_cleanup(indio_dev);
if (!IS_ERR(st->vref))
regulator_disable(st->vref);
if (!IS_ERR(st->reg))
+++ /dev/null
-/*
- * Copyright (C) 2010-2012 Michael Hennerich, Analog Devices Inc.
- * Copyright (C) 2008-2010 Jonathan Cameron
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * ad799x_ring.c
- */
-
-#include <linux/interrupt.h>
-#include <linux/slab.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/i2c.h>
-#include <linux/bitops.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
-
-#include "ad799x.h"
-
-/**
- * ad799x_trigger_handler() bh of trigger launched polling to ring buffer
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- **/
-
-static irqreturn_t ad799x_trigger_handler(int irq, void *p)
-{
- struct iio_poll_func *pf = p;
- struct iio_dev *indio_dev = pf->indio_dev;
- struct ad799x_state *st = iio_priv(indio_dev);
- int b_sent;
- u8 cmd;
-
- switch (st->id) {
- case ad7991:
- case ad7995:
- case ad7999:
- cmd = st->config |
- (*indio_dev->active_scan_mask << AD799X_CHANNEL_SHIFT);
- break;
- case ad7992:
- case ad7993:
- case ad7994:
- cmd = (*indio_dev->active_scan_mask << AD799X_CHANNEL_SHIFT) |
- AD7998_CONV_RES_REG;
- break;
- case ad7997:
- case ad7998:
- cmd = AD7997_8_READ_SEQUENCE | AD7998_CONV_RES_REG;
- break;
- default:
- cmd = 0;
- }
-
- b_sent = i2c_smbus_read_i2c_block_data(st->client,
- cmd, st->transfer_size, st->rx_buf);
- if (b_sent < 0)
- goto out;
-
- iio_push_to_buffers_with_timestamp(indio_dev, st->rx_buf,
- iio_get_time_ns());
-out:
- iio_trigger_notify_done(indio_dev->trig);
-
- return IRQ_HANDLED;
-}
-
-int ad799x_register_ring_funcs_and_init(struct iio_dev *indio_dev)
-{
- return iio_triggered_buffer_setup(indio_dev, NULL,
- &ad799x_trigger_handler, NULL);
-}
-
-void ad799x_ring_cleanup(struct iio_dev *indio_dev)
-{
- iio_triggered_buffer_cleanup(indio_dev);
-}
projects / karo-tx-linux.git / commitdiff