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path: root/drivers/iio/magnetometer/bmc150_magn.c
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Diffstat (limited to 'drivers/iio/magnetometer/bmc150_magn.c')
-rw-r--r--drivers/iio/magnetometer/bmc150_magn.c156
1 files changed, 63 insertions, 93 deletions
diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c
index ffcb75ea64fb..d104fb8d9379 100644
--- a/drivers/iio/magnetometer/bmc150_magn.c
+++ b/drivers/iio/magnetometer/bmc150_magn.c
@@ -23,7 +23,6 @@
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/acpi.h>
-#include <linux/gpio/consumer.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/iio/iio.h>
@@ -35,6 +34,8 @@
#include <linux/iio/triggered_buffer.h>
#include <linux/regmap.h>
+#include "bmc150_magn.h"
+
#define BMC150_MAGN_DRV_NAME "bmc150_magn"
#define BMC150_MAGN_IRQ_NAME "bmc150_magn_event"
@@ -135,7 +136,7 @@ struct bmc150_magn_trim_regs {
} __packed;
struct bmc150_magn_data {
- struct i2c_client *client;
+ struct device *dev;
/*
* 1. Protect this structure.
* 2. Serialize sequences that power on/off the device and access HW.
@@ -147,6 +148,7 @@ struct bmc150_magn_data {
struct iio_trigger *dready_trig;
bool dready_trigger_on;
int max_odr;
+ int irq;
};
static const struct {
@@ -216,7 +218,7 @@ static bool bmc150_magn_is_volatile_reg(struct device *dev, unsigned int reg)
}
}
-static const struct regmap_config bmc150_magn_regmap_config = {
+const struct regmap_config bmc150_magn_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -226,6 +228,7 @@ static const struct regmap_config bmc150_magn_regmap_config = {
.writeable_reg = bmc150_magn_is_writeable_reg,
.volatile_reg = bmc150_magn_is_volatile_reg,
};
+EXPORT_SYMBOL(bmc150_magn_regmap_config);
static int bmc150_magn_set_power_mode(struct bmc150_magn_data *data,
enum bmc150_magn_power_modes mode,
@@ -264,17 +267,17 @@ static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on)
int ret;
if (on) {
- ret = pm_runtime_get_sync(&data->client->dev);
+ ret = pm_runtime_get_sync(data->dev);
} else {
- pm_runtime_mark_last_busy(&data->client->dev);
- ret = pm_runtime_put_autosuspend(&data->client->dev);
+ pm_runtime_mark_last_busy(data->dev);
+ ret = pm_runtime_put_autosuspend(data->dev);
}
if (ret < 0) {
- dev_err(&data->client->dev,
+ dev_err(data->dev,
"failed to change power state to %d\n", on);
if (on)
- pm_runtime_put_noidle(&data->client->dev);
+ pm_runtime_put_noidle(data->dev);
return ret;
}
@@ -351,7 +354,7 @@ static int bmc150_magn_set_max_odr(struct bmc150_magn_data *data, int rep_xy,
/* the maximum selectable read-out frequency from datasheet */
max_odr = 1000000 / (145 * rep_xy + 500 * rep_z + 980);
if (odr > max_odr) {
- dev_err(&data->client->dev,
+ dev_err(data->dev,
"Can't set oversampling with sampling freq %d\n",
odr);
return -EINVAL;
@@ -685,27 +688,27 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
ret = bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND,
false);
if (ret < 0) {
- dev_err(&data->client->dev,
+ dev_err(data->dev,
"Failed to bring up device from suspend mode\n");
return ret;
}
ret = regmap_read(data->regmap, BMC150_MAGN_REG_CHIP_ID, &chip_id);
if (ret < 0) {
- dev_err(&data->client->dev, "Failed reading chip id\n");
+ dev_err(data->dev, "Failed reading chip id\n");
goto err_poweroff;
}
if (chip_id != BMC150_MAGN_CHIP_ID_VAL) {
- dev_err(&data->client->dev, "Invalid chip id 0x%x\n", chip_id);
+ dev_err(data->dev, "Invalid chip id 0x%x\n", chip_id);
ret = -ENODEV;
goto err_poweroff;
}
- dev_dbg(&data->client->dev, "Chip id %x\n", chip_id);
+ dev_dbg(data->dev, "Chip id %x\n", chip_id);
preset = bmc150_magn_presets_table[BMC150_MAGN_DEFAULT_PRESET];
ret = bmc150_magn_set_odr(data, preset.odr);
if (ret < 0) {
- dev_err(&data->client->dev, "Failed to set ODR to %d\n",
+ dev_err(data->dev, "Failed to set ODR to %d\n",
preset.odr);
goto err_poweroff;
}
@@ -713,7 +716,7 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
ret = regmap_write(data->regmap, BMC150_MAGN_REG_REP_XY,
BMC150_MAGN_REPXY_TO_REGVAL(preset.rep_xy));
if (ret < 0) {
- dev_err(&data->client->dev, "Failed to set REP XY to %d\n",
+ dev_err(data->dev, "Failed to set REP XY to %d\n",
preset.rep_xy);
goto err_poweroff;
}
@@ -721,7 +724,7 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
ret = regmap_write(data->regmap, BMC150_MAGN_REG_REP_Z,
BMC150_MAGN_REPZ_TO_REGVAL(preset.rep_z));
if (ret < 0) {
- dev_err(&data->client->dev, "Failed to set REP Z to %d\n",
+ dev_err(data->dev, "Failed to set REP Z to %d\n",
preset.rep_z);
goto err_poweroff;
}
@@ -734,7 +737,7 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
ret = bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_NORMAL,
true);
if (ret < 0) {
- dev_err(&data->client->dev, "Failed to power on device\n");
+ dev_err(data->dev, "Failed to power on device\n");
goto err_poweroff;
}
@@ -843,41 +846,33 @@ static const char *bmc150_magn_match_acpi_device(struct device *dev)
return dev_name(dev);
}
-static int bmc150_magn_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
+ int irq, const char *name)
{
struct bmc150_magn_data *data;
struct iio_dev *indio_dev;
- const char *name = NULL;
int ret;
- indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+ indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
if (!indio_dev)
return -ENOMEM;
data = iio_priv(indio_dev);
- i2c_set_clientdata(client, indio_dev);
- data->client = client;
+ dev_set_drvdata(dev, indio_dev);
+ data->regmap = regmap;
+ data->irq = irq;
+ data->dev = dev;
- if (id)
- name = id->name;
- else if (ACPI_HANDLE(&client->dev))
- name = bmc150_magn_match_acpi_device(&client->dev);
- else
- return -ENOSYS;
+ if (!name && ACPI_HANDLE(dev))
+ name = bmc150_magn_match_acpi_device(dev);
mutex_init(&data->mutex);
- data->regmap = devm_regmap_init_i2c(client, &bmc150_magn_regmap_config);
- if (IS_ERR(data->regmap)) {
- dev_err(&client->dev, "Failed to allocate register map\n");
- return PTR_ERR(data->regmap);
- }
ret = bmc150_magn_init(data);
if (ret < 0)
return ret;
- indio_dev->dev.parent = &client->dev;
+ indio_dev->dev.parent = dev;
indio_dev->channels = bmc150_magn_channels;
indio_dev->num_channels = ARRAY_SIZE(bmc150_magn_channels);
indio_dev->available_scan_masks = bmc150_magn_scan_masks;
@@ -885,35 +880,34 @@ static int bmc150_magn_probe(struct i2c_client *client,
indio_dev->modes = INDIO_DIRECT_MODE;
indio_dev->info = &bmc150_magn_info;
- if (client->irq > 0) {
- data->dready_trig = devm_iio_trigger_alloc(&client->dev,
+ if (irq > 0) {
+ data->dready_trig = devm_iio_trigger_alloc(dev,
"%s-dev%d",
indio_dev->name,
indio_dev->id);
if (!data->dready_trig) {
ret = -ENOMEM;
- dev_err(&client->dev, "iio trigger alloc failed\n");
+ dev_err(dev, "iio trigger alloc failed\n");
goto err_poweroff;
}
- data->dready_trig->dev.parent = &client->dev;
+ data->dready_trig->dev.parent = dev;
data->dready_trig->ops = &bmc150_magn_trigger_ops;
iio_trigger_set_drvdata(data->dready_trig, indio_dev);
ret = iio_trigger_register(data->dready_trig);
if (ret) {
- dev_err(&client->dev, "iio trigger register failed\n");
+ dev_err(dev, "iio trigger register failed\n");
goto err_poweroff;
}
- ret = request_threaded_irq(client->irq,
+ ret = request_threaded_irq(irq,
iio_trigger_generic_data_rdy_poll,
NULL,
IRQF_TRIGGER_RISING | IRQF_ONESHOT,
BMC150_MAGN_IRQ_NAME,
data->dready_trig);
if (ret < 0) {
- dev_err(&client->dev, "request irq %d failed\n",
- client->irq);
+ dev_err(dev, "request irq %d failed\n", irq);
goto err_trigger_unregister;
}
}
@@ -923,34 +917,33 @@ static int bmc150_magn_probe(struct i2c_client *client,
bmc150_magn_trigger_handler,
&bmc150_magn_buffer_setup_ops);
if (ret < 0) {
- dev_err(&client->dev,
- "iio triggered buffer setup failed\n");
+ dev_err(dev, "iio triggered buffer setup failed\n");
goto err_free_irq;
}
- ret = pm_runtime_set_active(&client->dev);
+ ret = pm_runtime_set_active(dev);
if (ret)
goto err_buffer_cleanup;
- pm_runtime_enable(&client->dev);
- pm_runtime_set_autosuspend_delay(&client->dev,
+ pm_runtime_enable(dev);
+ pm_runtime_set_autosuspend_delay(dev,
BMC150_MAGN_AUTO_SUSPEND_DELAY_MS);
- pm_runtime_use_autosuspend(&client->dev);
+ pm_runtime_use_autosuspend(dev);
ret = iio_device_register(indio_dev);
if (ret < 0) {
- dev_err(&client->dev, "unable to register iio device\n");
+ dev_err(dev, "unable to register iio device\n");
goto err_buffer_cleanup;
}
- dev_dbg(&indio_dev->dev, "Registered device %s\n", name);
+ dev_dbg(dev, "Registered device %s\n", name);
return 0;
err_buffer_cleanup:
iio_triggered_buffer_cleanup(indio_dev);
err_free_irq:
- if (client->irq > 0)
- free_irq(client->irq, data->dready_trig);
+ if (irq > 0)
+ free_irq(irq, data->dready_trig);
err_trigger_unregister:
if (data->dready_trig)
iio_trigger_unregister(data->dready_trig);
@@ -958,22 +951,23 @@ err_poweroff:
bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND, true);
return ret;
}
+EXPORT_SYMBOL(bmc150_magn_probe);
-static int bmc150_magn_remove(struct i2c_client *client)
+int bmc150_magn_remove(struct device *dev)
{
- struct iio_dev *indio_dev = i2c_get_clientdata(client);
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmc150_magn_data *data = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
- pm_runtime_disable(&client->dev);
- pm_runtime_set_suspended(&client->dev);
- pm_runtime_put_noidle(&client->dev);
+ pm_runtime_disable(dev);
+ pm_runtime_set_suspended(dev);
+ pm_runtime_put_noidle(dev);
iio_triggered_buffer_cleanup(indio_dev);
- if (client->irq > 0)
- free_irq(data->client->irq, data->dready_trig);
+ if (data->irq > 0)
+ free_irq(data->irq, data->dready_trig);
if (data->dready_trig)
iio_trigger_unregister(data->dready_trig);
@@ -984,11 +978,12 @@ static int bmc150_magn_remove(struct i2c_client *client)
return 0;
}
+EXPORT_SYMBOL(bmc150_magn_remove);
#ifdef CONFIG_PM
static int bmc150_magn_runtime_suspend(struct device *dev)
{
- struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmc150_magn_data *data = iio_priv(indio_dev);
int ret;
@@ -997,7 +992,7 @@ static int bmc150_magn_runtime_suspend(struct device *dev)
true);
mutex_unlock(&data->mutex);
if (ret < 0) {
- dev_err(&data->client->dev, "powering off device failed\n");
+ dev_err(dev, "powering off device failed\n");
return ret;
}
return 0;
@@ -1008,7 +1003,7 @@ static int bmc150_magn_runtime_suspend(struct device *dev)
*/
static int bmc150_magn_runtime_resume(struct device *dev)
{
- struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmc150_magn_data *data = iio_priv(indio_dev);
return bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_NORMAL,
@@ -1019,7 +1014,7 @@ static int bmc150_magn_runtime_resume(struct device *dev)
#ifdef CONFIG_PM_SLEEP
static int bmc150_magn_suspend(struct device *dev)
{
- struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmc150_magn_data *data = iio_priv(indio_dev);
int ret;
@@ -1033,7 +1028,7 @@ static int bmc150_magn_suspend(struct device *dev)
static int bmc150_magn_resume(struct device *dev)
{
- struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+ struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct bmc150_magn_data *data = iio_priv(indio_dev);
int ret;
@@ -1046,38 +1041,13 @@ static int bmc150_magn_resume(struct device *dev)
}
#endif
-static const struct dev_pm_ops bmc150_magn_pm_ops = {
+const struct dev_pm_ops bmc150_magn_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(bmc150_magn_suspend, bmc150_magn_resume)
SET_RUNTIME_PM_OPS(bmc150_magn_runtime_suspend,
bmc150_magn_runtime_resume, NULL)
};
-
-static const struct acpi_device_id bmc150_magn_acpi_match[] = {
- {"BMC150B", 0},
- {"BMC156B", 0},
- {},
-};
-MODULE_DEVICE_TABLE(acpi, bmc150_magn_acpi_match);
-
-static const struct i2c_device_id bmc150_magn_id[] = {
- {"bmc150_magn", 0},
- {"bmc156_magn", 0},
- {},
-};
-MODULE_DEVICE_TABLE(i2c, bmc150_magn_id);
-
-static struct i2c_driver bmc150_magn_driver = {
- .driver = {
- .name = BMC150_MAGN_DRV_NAME,
- .acpi_match_table = ACPI_PTR(bmc150_magn_acpi_match),
- .pm = &bmc150_magn_pm_ops,
- },
- .probe = bmc150_magn_probe,
- .remove = bmc150_magn_remove,
- .id_table = bmc150_magn_id,
-};
-module_i2c_driver(bmc150_magn_driver);
+EXPORT_SYMBOL(bmc150_magn_pm_ops);
MODULE_AUTHOR("Irina Tirdea <irina.tirdea@intel.com>");
MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("BMC150 magnetometer driver");
+MODULE_DESCRIPTION("BMC150 magnetometer core driver");