diff options
Diffstat (limited to 'drivers/iio/magnetometer')
-rw-r--r-- | drivers/iio/magnetometer/Kconfig | 33 | ||||
-rw-r--r-- | drivers/iio/magnetometer/Makefile | 3 | ||||
-rw-r--r-- | drivers/iio/magnetometer/ak8975.c | 168 | ||||
-rw-r--r-- | drivers/iio/magnetometer/bmc150_magn.c | 155 | ||||
-rw-r--r-- | drivers/iio/magnetometer/bmc150_magn.h | 11 | ||||
-rw-r--r-- | drivers/iio/magnetometer/bmc150_magn_i2c.c | 77 | ||||
-rw-r--r-- | drivers/iio/magnetometer/bmc150_magn_spi.c | 68 | ||||
-rw-r--r-- | drivers/iio/magnetometer/st_magn_core.c | 1 |
8 files changed, 389 insertions, 127 deletions
diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig index 021dc5361f53..84e6559ccc65 100644 --- a/drivers/iio/magnetometer/Kconfig +++ b/drivers/iio/magnetometer/Kconfig @@ -9,6 +9,8 @@ config AK8975 tristate "Asahi Kasei AK 3-Axis Magnetometer" depends on I2C depends on GPIOLIB || COMPILE_TEST + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER help Say yes here to build support for Asahi Kasei AK8975, AK8963, AK09911 or AK09912 3-Axis Magnetometer. @@ -25,22 +27,41 @@ config AK09911 Deprecated: AK09911 is now supported by AK8975 driver. config BMC150_MAGN - tristate "Bosch BMC150 Magnetometer Driver" - depends on I2C - select REGMAP_I2C + tristate select IIO_BUFFER select IIO_TRIGGERED_BUFFER + +config BMC150_MAGN_I2C + tristate "Bosch BMC150 I2C Magnetometer Driver" + depends on I2C + select BMC150_MAGN + select REGMAP_I2C help - Say yes here to build support for the BMC150 magnetometer. + Say yes here to build support for the BMC150 magnetometer with + I2C interface. - Currently this only supports the device via an i2c interface. + This is a combo module with both accelerometer and magnetometer. + This driver is only implementing magnetometer part, which has + its own address and register map. + + To compile this driver as a module, choose M here: the module will be + called bmc150_magn_i2c. + +config BMC150_MAGN_SPI + tristate "Bosch BMC150 SPI Magnetometer Driver" + depends on SPI + select BMC150_MAGN + select REGMAP_SPI + help + Say yes here to build support for the BMC150 magnetometer with + SPI interface. This is a combo module with both accelerometer and magnetometer. This driver is only implementing magnetometer part, which has its own address and register map. To compile this driver as a module, choose M here: the module will be - called bmc150_magn. + called bmc150_magn_spi. config MAG3110 tristate "Freescale MAG3110 3-Axis Magnetometer" diff --git a/drivers/iio/magnetometer/Makefile b/drivers/iio/magnetometer/Makefile index dd03fe524481..92a745c9a6e8 100644 --- a/drivers/iio/magnetometer/Makefile +++ b/drivers/iio/magnetometer/Makefile @@ -5,6 +5,9 @@ # When adding new entries keep the list in alphabetical order obj-$(CONFIG_AK8975) += ak8975.o obj-$(CONFIG_BMC150_MAGN) += bmc150_magn.o +obj-$(CONFIG_BMC150_MAGN_I2C) += bmc150_magn_i2c.o +obj-$(CONFIG_BMC150_MAGN_SPI) += bmc150_magn_spi.o + obj-$(CONFIG_MAG3110) += mag3110.o obj-$(CONFIG_HID_SENSOR_MAGNETOMETER_3D) += hid-sensor-magn-3d.o obj-$(CONFIG_MMC35240) += mmc35240.o diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c index 48d127a45d90..dbf066129a04 100644 --- a/drivers/iio/magnetometer/ak8975.c +++ b/drivers/iio/magnetometer/ak8975.c @@ -36,6 +36,13 @@ #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> +#include <linux/iio/buffer.h> +#include <linux/iio/trigger.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/triggered_buffer.h> + +#include <linux/iio/magnetometer/ak8975.h> + /* * Register definitions, as well as various shifts and masks to get at the * individual fields of the registers. @@ -370,6 +377,7 @@ struct ak8975_data { wait_queue_head_t data_ready_queue; unsigned long flags; u8 cntl_cache; + struct iio_mount_matrix orientation; struct regulator *vdd; }; @@ -633,22 +641,15 @@ static int wait_conversion_complete_interrupt(struct ak8975_data *data) return ret > 0 ? 0 : -ETIME; } -/* - * Emits the raw flux value for the x, y, or z axis. - */ -static int ak8975_read_axis(struct iio_dev *indio_dev, int index, int *val) +static int ak8975_start_read_axis(struct ak8975_data *data, + const struct i2c_client *client) { - struct ak8975_data *data = iio_priv(indio_dev); - struct i2c_client *client = data->client; - int ret; - - mutex_lock(&data->lock); - /* Set up the device for taking a sample. */ - ret = ak8975_set_mode(data, MODE_ONCE); + int ret = ak8975_set_mode(data, MODE_ONCE); + if (ret < 0) { dev_err(&client->dev, "Error in setting operating mode\n"); - goto exit; + return ret; } /* Wait for the conversion to complete. */ @@ -659,7 +660,7 @@ static int ak8975_read_axis(struct iio_dev *indio_dev, int index, int *val) else ret = wait_conversion_complete_polled(data); if (ret < 0) - goto exit; + return ret; /* This will be executed only for non-interrupt based waiting case */ if (ret & data->def->ctrl_masks[ST1_DRDY]) { @@ -667,32 +668,45 @@ static int ak8975_read_axis(struct iio_dev *indio_dev, int index, int *val) data->def->ctrl_regs[ST2]); if (ret < 0) { dev_err(&client->dev, "Error in reading ST2\n"); - goto exit; + return ret; } if (ret & (data->def->ctrl_masks[ST2_DERR] | data->def->ctrl_masks[ST2_HOFL])) { dev_err(&client->dev, "ST2 status error 0x%x\n", ret); - ret = -EINVAL; - goto exit; + return -EINVAL; } } - /* Read the flux value from the appropriate register - (the register is specified in the iio device attributes). */ - ret = i2c_smbus_read_word_data(client, data->def->data_regs[index]); - if (ret < 0) { - dev_err(&client->dev, "Read axis data fails\n"); + return 0; +} + +/* Retrieve raw flux value for one of the x, y, or z axis. */ +static int ak8975_read_axis(struct iio_dev *indio_dev, int index, int *val) +{ + struct ak8975_data *data = iio_priv(indio_dev); + const struct i2c_client *client = data->client; + const struct ak_def *def = data->def; + int ret; + + mutex_lock(&data->lock); + + ret = ak8975_start_read_axis(data, client); + if (ret) + goto exit; + + ret = i2c_smbus_read_word_data(client, def->data_regs[index]); + if (ret < 0) goto exit; - } mutex_unlock(&data->lock); /* Clamp to valid range. */ - *val = clamp_t(s16, ret, -data->def->range, data->def->range); + *val = clamp_t(s16, ret, -def->range, def->range); return IIO_VAL_INT; exit: mutex_unlock(&data->lock); + dev_err(&client->dev, "Error in reading axis\n"); return ret; } @@ -714,6 +728,18 @@ static int ak8975_read_raw(struct iio_dev *indio_dev, return -EINVAL; } +static const struct iio_mount_matrix * +ak8975_get_mount_matrix(const struct iio_dev *indio_dev, + const struct iio_chan_spec *chan) +{ + return &((struct ak8975_data *)iio_priv(indio_dev))->orientation; +} + +static const struct iio_chan_spec_ext_info ak8975_ext_info[] = { + IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, ak8975_get_mount_matrix), + { }, +}; + #define AK8975_CHANNEL(axis, index) \ { \ .type = IIO_MAGN, \ @@ -722,12 +748,23 @@ static int ak8975_read_raw(struct iio_dev *indio_dev, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ BIT(IIO_CHAN_INFO_SCALE), \ .address = index, \ + .scan_index = index, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 16, \ + .storagebits = 16, \ + .endianness = IIO_CPU \ + }, \ + .ext_info = ak8975_ext_info, \ } static const struct iio_chan_spec ak8975_channels[] = { AK8975_CHANNEL(X, 0), AK8975_CHANNEL(Y, 1), AK8975_CHANNEL(Z, 2), + IIO_CHAN_SOFT_TIMESTAMP(3), }; +static const unsigned long ak8975_scan_masks[] = { 0x7, 0 }; + static const struct iio_info ak8975_info = { .read_raw = &ak8975_read_raw, .driver_module = THIS_MODULE, @@ -756,6 +793,56 @@ static const char *ak8975_match_acpi_device(struct device *dev, return dev_name(dev); } +static void ak8975_fill_buffer(struct iio_dev *indio_dev) +{ + struct ak8975_data *data = iio_priv(indio_dev); + const struct i2c_client *client = data->client; + const struct ak_def *def = data->def; + int ret; + s16 buff[8]; /* 3 x 16 bits axis values + 1 aligned 64 bits timestamp */ + + mutex_lock(&data->lock); + + ret = ak8975_start_read_axis(data, client); + if (ret) + goto unlock; + + /* + * For each axis, read the flux value from the appropriate register + * (the register is specified in the iio device attributes). + */ + ret = i2c_smbus_read_i2c_block_data_or_emulated(client, + def->data_regs[0], + 3 * sizeof(buff[0]), + (u8 *)buff); + if (ret < 0) + goto unlock; + + mutex_unlock(&data->lock); + + /* Clamp to valid range. */ + buff[0] = clamp_t(s16, le16_to_cpu(buff[0]), -def->range, def->range); + buff[1] = clamp_t(s16, le16_to_cpu(buff[1]), -def->range, def->range); + buff[2] = clamp_t(s16, le16_to_cpu(buff[2]), -def->range, def->range); + + iio_push_to_buffers_with_timestamp(indio_dev, buff, iio_get_time_ns()); + return; + +unlock: + mutex_unlock(&data->lock); + dev_err(&client->dev, "Error in reading axes block\n"); +} + +static irqreturn_t ak8975_handle_trigger(int irq, void *p) +{ + const struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + + ak8975_fill_buffer(indio_dev); + iio_trigger_notify_done(indio_dev->trig); + return IRQ_HANDLED; +} + static int ak8975_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -765,10 +852,12 @@ static int ak8975_probe(struct i2c_client *client, int err; const char *name = NULL; enum asahi_compass_chipset chipset; + const struct ak8975_platform_data *pdata = + dev_get_platdata(&client->dev); /* Grab and set up the supplied GPIO. */ - if (client->dev.platform_data) - eoc_gpio = *(int *)(client->dev.platform_data); + if (pdata) + eoc_gpio = pdata->eoc_gpio; else if (client->dev.of_node) eoc_gpio = of_get_gpio(client->dev.of_node, 0); else @@ -802,6 +891,15 @@ static int ak8975_probe(struct i2c_client *client, data->eoc_gpio = eoc_gpio; data->eoc_irq = 0; + if (!pdata) { + err = of_iio_read_mount_matrix(&client->dev, + "mount-matrix", + &data->orientation); + if (err) + return err; + } else + data->orientation = pdata->orientation; + /* id will be NULL when enumerated via ACPI */ if (id) { chipset = (enum asahi_compass_chipset)(id->driver_data); @@ -810,8 +908,7 @@ static int ak8975_probe(struct i2c_client *client, name = ak8975_match_acpi_device(&client->dev, &chipset); if (!name) return -ENODEV; - } - else + } else return -ENOSYS; if (chipset >= AK_MAX_TYPE) { @@ -845,15 +942,27 @@ static int ak8975_probe(struct i2c_client *client, indio_dev->channels = ak8975_channels; indio_dev->num_channels = ARRAY_SIZE(ak8975_channels); indio_dev->info = &ak8975_info; + indio_dev->available_scan_masks = ak8975_scan_masks; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->name = name; - err = iio_device_register(indio_dev); - if (err) + err = iio_triggered_buffer_setup(indio_dev, NULL, ak8975_handle_trigger, + NULL); + if (err) { + dev_err(&client->dev, "triggered buffer setup failed\n"); goto power_off; + } + + err = iio_device_register(indio_dev); + if (err) { + dev_err(&client->dev, "device register failed\n"); + goto cleanup_buffer; + } return 0; +cleanup_buffer: + iio_triggered_buffer_cleanup(indio_dev); power_off: ak8975_power_off(client); return err; @@ -864,6 +973,7 @@ static int ak8975_remove(struct i2c_client *client) struct iio_dev *indio_dev = i2c_get_clientdata(client); iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); ak8975_power_off(client); return 0; diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c index 0e9da189dc4c..d104fb8d9379 100644 --- a/drivers/iio/magnetometer/bmc150_magn.c +++ b/drivers/iio/magnetometer/bmc150_magn.c @@ -34,6 +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" @@ -134,7 +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. @@ -146,6 +148,7 @@ struct bmc150_magn_data { struct iio_trigger *dready_trig; bool dready_trigger_on; int max_odr; + int irq; }; static const struct { @@ -215,7 +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, @@ -225,6 +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, @@ -263,17 +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; } @@ -350,7 +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; @@ -684,27 +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; } @@ -712,7 +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; } @@ -720,7 +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; } @@ -733,7 +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; } @@ -842,41 +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; @@ -884,35 +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; } } @@ -922,34 +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); @@ -957,22 +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); @@ -983,11 +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; @@ -996,7 +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; @@ -1007,7 +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, @@ -1018,7 +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; @@ -1032,7 +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; @@ -1045,38 +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"); diff --git a/drivers/iio/magnetometer/bmc150_magn.h b/drivers/iio/magnetometer/bmc150_magn.h new file mode 100644 index 000000000000..9a8e26812ca8 --- /dev/null +++ b/drivers/iio/magnetometer/bmc150_magn.h @@ -0,0 +1,11 @@ +#ifndef _BMC150_MAGN_H_ +#define _BMC150_MAGN_H_ + +extern const struct regmap_config bmc150_magn_regmap_config; +extern const struct dev_pm_ops bmc150_magn_pm_ops; + +int bmc150_magn_probe(struct device *dev, struct regmap *regmap, int irq, + const char *name); +int bmc150_magn_remove(struct device *dev); + +#endif /* _BMC150_MAGN_H_ */ diff --git a/drivers/iio/magnetometer/bmc150_magn_i2c.c b/drivers/iio/magnetometer/bmc150_magn_i2c.c new file mode 100644 index 000000000000..eddc7f0d0096 --- /dev/null +++ b/drivers/iio/magnetometer/bmc150_magn_i2c.c @@ -0,0 +1,77 @@ +/* + * 3-axis magnetometer driver supporting following I2C Bosch-Sensortec chips: + * - BMC150 + * - BMC156 + * + * Copyright (c) 2016, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ +#include <linux/device.h> +#include <linux/mod_devicetable.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/acpi.h> +#include <linux/regmap.h> + +#include "bmc150_magn.h" + +static int bmc150_magn_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct regmap *regmap; + const char *name = NULL; + + regmap = devm_regmap_init_i2c(client, &bmc150_magn_regmap_config); + if (IS_ERR(regmap)) { + dev_err(&client->dev, "Failed to initialize i2c regmap\n"); + return PTR_ERR(regmap); + } + + if (id) + name = id->name; + + return bmc150_magn_probe(&client->dev, regmap, client->irq, name); +} + +static int bmc150_magn_i2c_remove(struct i2c_client *client) +{ + return bmc150_magn_remove(&client->dev); +} + +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_i2c_id[] = { + {"bmc150_magn", 0}, + {"bmc156_magn", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, bmc150_magn_i2c_id); + +static struct i2c_driver bmc150_magn_driver = { + .driver = { + .name = "bmc150_magn_i2c", + .acpi_match_table = ACPI_PTR(bmc150_magn_acpi_match), + .pm = &bmc150_magn_pm_ops, + }, + .probe = bmc150_magn_i2c_probe, + .remove = bmc150_magn_i2c_remove, + .id_table = bmc150_magn_i2c_id, +}; +module_i2c_driver(bmc150_magn_driver); + +MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("BMC150 I2C magnetometer driver"); diff --git a/drivers/iio/magnetometer/bmc150_magn_spi.c b/drivers/iio/magnetometer/bmc150_magn_spi.c new file mode 100644 index 000000000000..c4c738a07695 --- /dev/null +++ b/drivers/iio/magnetometer/bmc150_magn_spi.c @@ -0,0 +1,68 @@ +/* + * 3-axis magnetometer driver support following SPI Bosch-Sensortec chips: + * - BMC150 + * - BMC156 + * + * Copyright (c) 2016, Intel Corporation. + * + * This file is subject to the terms and conditions of version 2 of + * the GNU General Public License. See the file COPYING in the main + * directory of this archive for more details. + */ +#include <linux/module.h> +#include <linux/mod_devicetable.h> +#include <linux/spi/spi.h> +#include <linux/acpi.h> +#include <linux/regmap.h> + +#include "bmc150_magn.h" + +static int bmc150_magn_spi_probe(struct spi_device *spi) +{ + struct regmap *regmap; + const struct spi_device_id *id = spi_get_device_id(spi); + + regmap = devm_regmap_init_spi(spi, &bmc150_magn_regmap_config); + if (IS_ERR(regmap)) { + dev_err(&spi->dev, "Failed to register spi regmap %d\n", + (int)PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + return bmc150_magn_probe(&spi->dev, regmap, spi->irq, id->name); +} + +static int bmc150_magn_spi_remove(struct spi_device *spi) +{ + bmc150_magn_remove(&spi->dev); + + return 0; +} + +static const struct spi_device_id bmc150_magn_spi_id[] = { + {"bmc150_magn", 0}, + {"bmc156_magn", 0}, + {} +}; +MODULE_DEVICE_TABLE(spi, bmc150_magn_spi_id); + +static const struct acpi_device_id bmc150_magn_acpi_match[] = { + {"BMC150B", 0}, + {"BMC156B", 0}, + {}, +}; +MODULE_DEVICE_TABLE(acpi, bmc150_magn_acpi_match); + +static struct spi_driver bmc150_magn_spi_driver = { + .probe = bmc150_magn_spi_probe, + .remove = bmc150_magn_spi_remove, + .id_table = bmc150_magn_spi_id, + .driver = { + .acpi_match_table = ACPI_PTR(bmc150_magn_acpi_match), + .name = "bmc150_magn_spi", + }, +}; +module_spi_driver(bmc150_magn_spi_driver); + +MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com"); +MODULE_DESCRIPTION("BMC150 magnetometer SPI driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c index 501f858df413..62036d2a9956 100644 --- a/drivers/iio/magnetometer/st_magn_core.c +++ b/drivers/iio/magnetometer/st_magn_core.c @@ -484,6 +484,7 @@ static const struct st_sensor_settings st_magn_sensors_settings[] = { .mask_int1 = ST_MAGN_3_DRDY_INT_MASK, .addr_ihl = ST_MAGN_3_IHL_IRQ_ADDR, .mask_ihl = ST_MAGN_3_IHL_IRQ_MASK, + .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, }, .multi_read_bit = ST_MAGN_3_MULTIREAD_BIT, .bootime = 2, |