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Diffstat (limited to 'drivers/iio/adc/ad7091r-base.c')
-rw-r--r--drivers/iio/adc/ad7091r-base.c113
1 files changed, 28 insertions, 85 deletions
diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c
index 76002b91c..f4255b91a 100644
--- a/drivers/iio/adc/ad7091r-base.c
+++ b/drivers/iio/adc/ad7091r-base.c
@@ -16,41 +16,6 @@
#include "ad7091r-base.h"
-#define AD7091R_REG_RESULT 0
-#define AD7091R_REG_CHANNEL 1
-#define AD7091R_REG_CONF 2
-#define AD7091R_REG_ALERT 3
-#define AD7091R_REG_CH_LOW_LIMIT(ch) ((ch) * 3 + 4)
-#define AD7091R_REG_CH_HIGH_LIMIT(ch) ((ch) * 3 + 5)
-#define AD7091R_REG_CH_HYSTERESIS(ch) ((ch) * 3 + 6)
-
-/* AD7091R_REG_RESULT */
-#define AD7091R_REG_RESULT_CH_ID(x) (((x) >> 13) & 0x3)
-#define AD7091R_REG_RESULT_CONV_RESULT(x) ((x) & 0xfff)
-
-/* AD7091R_REG_CONF */
-#define AD7091R_REG_CONF_ALERT_EN BIT(4)
-#define AD7091R_REG_CONF_AUTO BIT(8)
-#define AD7091R_REG_CONF_CMD BIT(10)
-
-#define AD7091R_REG_CONF_MODE_MASK \
- (AD7091R_REG_CONF_AUTO | AD7091R_REG_CONF_CMD)
-
-enum ad7091r_mode {
- AD7091R_MODE_SAMPLE,
- AD7091R_MODE_COMMAND,
- AD7091R_MODE_AUTOCYCLE,
-};
-
-struct ad7091r_state {
- struct device *dev;
- struct regmap *map;
- struct regulator *vref;
- const struct ad7091r_chip_info *chip_info;
- enum ad7091r_mode mode;
- struct mutex lock; /*lock to prevent concurent reads */
-};
-
const struct iio_event_spec ad7091r_events[] = {
{
.type = IIO_EV_TYPE_THRESH,
@@ -72,34 +37,6 @@ const struct iio_event_spec ad7091r_events[] = {
};
EXPORT_SYMBOL_NS_GPL(ad7091r_events, IIO_AD7091R);
-static int ad7091r_set_mode(struct ad7091r_state *st, enum ad7091r_mode mode)
-{
- int ret, conf;
-
- switch (mode) {
- case AD7091R_MODE_SAMPLE:
- conf = 0;
- break;
- case AD7091R_MODE_COMMAND:
- conf = AD7091R_REG_CONF_CMD;
- break;
- case AD7091R_MODE_AUTOCYCLE:
- conf = AD7091R_REG_CONF_AUTO;
- break;
- default:
- return -EINVAL;
- }
-
- ret = regmap_update_bits(st->map, AD7091R_REG_CONF,
- AD7091R_REG_CONF_MODE_MASK, conf);
- if (ret)
- return ret;
-
- st->mode = mode;
-
- return 0;
-}
-
static int ad7091r_set_channel(struct ad7091r_state *st, unsigned int channel)
{
unsigned int dummy;
@@ -133,7 +70,7 @@ static int ad7091r_read_one(struct iio_dev *iio_dev,
if (ret)
return ret;
- if (AD7091R_REG_RESULT_CH_ID(val) != channel)
+ if (st->chip_info->reg_result_chan_id(val) != channel)
return -EIO;
*read_val = AD7091R_REG_RESULT_CONV_RESULT(val);
@@ -364,9 +301,8 @@ static void ad7091r_remove(void *data)
regulator_disable(st->vref);
}
-int ad7091r_probe(struct device *dev, const char *name,
- const struct ad7091r_chip_info *chip_info,
- struct regmap *map, int irq)
+int ad7091r_probe(struct device *dev, const struct ad7091r_init_info *init_info,
+ int irq)
{
struct iio_dev *iio_dev;
struct ad7091r_state *st;
@@ -378,29 +314,42 @@ int ad7091r_probe(struct device *dev, const char *name,
st = iio_priv(iio_dev);
st->dev = dev;
- st->chip_info = chip_info;
- st->map = map;
+ init_info->init_adc_regmap(st, init_info->regmap_config);
+ if (IS_ERR(st->map))
+ return dev_err_probe(st->dev, PTR_ERR(st->map),
+ "Error initializing regmap\n");
- iio_dev->name = name;
iio_dev->info = &ad7091r_info;
iio_dev->modes = INDIO_DIRECT_MODE;
- iio_dev->num_channels = chip_info->num_channels;
- iio_dev->channels = chip_info->channels;
+ if (init_info->setup) {
+ ret = init_info->setup(st);
+ if (ret < 0)
+ return ret;
+ }
if (irq) {
+ st->chip_info = init_info->info_irq;
ret = regmap_update_bits(st->map, AD7091R_REG_CONF,
AD7091R_REG_CONF_ALERT_EN, BIT(4));
if (ret)
return ret;
ret = devm_request_threaded_irq(dev, irq, NULL,
- ad7091r_event_handler,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT, name, iio_dev);
+ ad7091r_event_handler,
+ IRQF_TRIGGER_FALLING |
+ IRQF_ONESHOT,
+ st->chip_info->name, iio_dev);
if (ret)
return ret;
+ } else {
+ st->chip_info = init_info->info_no_irq;
}
+ iio_dev->name = st->chip_info->name;
+ iio_dev->num_channels = st->chip_info->num_channels;
+ iio_dev->channels = st->chip_info->channels;
+
st->vref = devm_regulator_get_optional(dev, "vref");
if (IS_ERR(st->vref)) {
if (PTR_ERR(st->vref) == -EPROBE_DEFER)
@@ -423,7 +372,7 @@ int ad7091r_probe(struct device *dev, const char *name,
}
/* Use command mode by default to convert only desired channels*/
- ret = ad7091r_set_mode(st, AD7091R_MODE_COMMAND);
+ ret = st->chip_info->set_mode(st, AD7091R_MODE_COMMAND);
if (ret)
return ret;
@@ -431,7 +380,7 @@ int ad7091r_probe(struct device *dev, const char *name,
}
EXPORT_SYMBOL_NS_GPL(ad7091r_probe, IIO_AD7091R);
-static bool ad7091r_writeable_reg(struct device *dev, unsigned int reg)
+bool ad7091r_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case AD7091R_REG_RESULT:
@@ -441,8 +390,9 @@ static bool ad7091r_writeable_reg(struct device *dev, unsigned int reg)
return true;
}
}
+EXPORT_SYMBOL_NS_GPL(ad7091r_writeable_reg, IIO_AD7091R);
-static bool ad7091r_volatile_reg(struct device *dev, unsigned int reg)
+bool ad7091r_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case AD7091R_REG_RESULT:
@@ -452,14 +402,7 @@ static bool ad7091r_volatile_reg(struct device *dev, unsigned int reg)
return false;
}
}
-
-const struct regmap_config ad7091r_regmap_config = {
- .reg_bits = 8,
- .val_bits = 16,
- .writeable_reg = ad7091r_writeable_reg,
- .volatile_reg = ad7091r_volatile_reg,
-};
-EXPORT_SYMBOL_NS_GPL(ad7091r_regmap_config, IIO_AD7091R);
+EXPORT_SYMBOL_NS_GPL(ad7091r_volatile_reg, IIO_AD7091R);
MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>");
MODULE_DESCRIPTION("Analog Devices AD7091Rx multi-channel converters");
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-02 05:51:41 +0000