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![Alexandru Ardelean](/assets/img/avatar_default.png)
This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
1215 lines
31 KiB
C
1215 lines
31 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* bma180.c - IIO driver for Bosch BMA180 triaxial acceleration sensor
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*
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* Copyright 2013 Oleksandr Kravchenko <x0199363@ti.com>
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*
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* Support for BMA250 (c) Peter Meerwald <pmeerw@pmeerw.net>
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*
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* SPI is not supported by driver
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* BMA023/BMA150/SMB380: 7-bit I2C slave address 0x38
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* BMA180: 7-bit I2C slave address 0x40 or 0x41
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* BMA250: 7-bit I2C slave address 0x18 or 0x19
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* BMA254: 7-bit I2C slave address 0x18 or 0x19
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*/
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/of_device.h>
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#include <linux/of.h>
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#include <linux/bitops.h>
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#include <linux/regulator/consumer.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/iio/iio.h>
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#include <linux/iio/sysfs.h>
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#include <linux/iio/buffer.h>
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#include <linux/iio/trigger.h>
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#include <linux/iio/trigger_consumer.h>
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#include <linux/iio/triggered_buffer.h>
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#define BMA180_DRV_NAME "bma180"
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#define BMA180_IRQ_NAME "bma180_event"
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enum chip_ids {
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BMA023,
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BMA150,
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BMA180,
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BMA250,
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BMA254,
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};
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struct bma180_data;
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struct bma180_part_info {
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u8 chip_id;
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const struct iio_chan_spec *channels;
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unsigned int num_channels;
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const int *scale_table;
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unsigned int num_scales;
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const int *bw_table;
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unsigned int num_bw;
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int temp_offset;
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u8 int_reset_reg, int_reset_mask;
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u8 sleep_reg, sleep_mask;
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u8 bw_reg, bw_mask;
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u8 scale_reg, scale_mask;
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u8 power_reg, power_mask, lowpower_val;
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u8 int_enable_reg, int_enable_mask;
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u8 int_map_reg, int_enable_dataready_int1_mask;
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u8 softreset_reg, softreset_val;
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int (*chip_config)(struct bma180_data *data);
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void (*chip_disable)(struct bma180_data *data);
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};
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/* Register set */
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#define BMA023_CTRL_REG0 0x0a
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#define BMA023_CTRL_REG1 0x0b
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#define BMA023_CTRL_REG2 0x14
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#define BMA023_CTRL_REG3 0x15
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#define BMA023_RANGE_MASK GENMASK(4, 3) /* Range of accel values */
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#define BMA023_BW_MASK GENMASK(2, 0) /* Accel bandwidth */
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#define BMA023_SLEEP BIT(0)
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#define BMA023_INT_RESET_MASK BIT(6)
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#define BMA023_NEW_DATA_INT BIT(5) /* Intr every new accel data is ready */
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#define BMA023_RESET_VAL BIT(1)
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#define BMA180_CHIP_ID 0x00 /* Need to distinguish BMA180 from other */
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#define BMA180_ACC_X_LSB 0x02 /* First of 6 registers of accel data */
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#define BMA180_TEMP 0x08
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#define BMA180_CTRL_REG0 0x0d
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#define BMA180_RESET 0x10
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#define BMA180_BW_TCS 0x20
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#define BMA180_CTRL_REG3 0x21
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#define BMA180_TCO_Z 0x30
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#define BMA180_OFFSET_LSB1 0x35
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/* BMA180_CTRL_REG0 bits */
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#define BMA180_DIS_WAKE_UP BIT(0) /* Disable wake up mode */
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#define BMA180_SLEEP BIT(1) /* 1 - chip will sleep */
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#define BMA180_EE_W BIT(4) /* Unlock writing to addr from 0x20 */
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#define BMA180_RESET_INT BIT(6) /* Reset pending interrupts */
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/* BMA180_CTRL_REG3 bits */
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#define BMA180_NEW_DATA_INT BIT(1) /* Intr every new accel data is ready */
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/* BMA180_OFFSET_LSB1 skipping mode bit */
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#define BMA180_SMP_SKIP BIT(0)
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/* Bit masks for registers bit fields */
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#define BMA180_RANGE 0x0e /* Range of measured accel values */
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#define BMA180_BW 0xf0 /* Accel bandwidth */
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#define BMA180_MODE_CONFIG 0x03 /* Config operation modes */
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/* We have to write this value in reset register to do soft reset */
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#define BMA180_RESET_VAL 0xb6
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#define BMA023_ID_REG_VAL 0x02
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#define BMA180_ID_REG_VAL 0x03
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#define BMA250_ID_REG_VAL 0x03
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#define BMA254_ID_REG_VAL 0xfa /* 250 decimal */
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/* Chip power modes */
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#define BMA180_LOW_POWER 0x03
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#define BMA250_RANGE_REG 0x0f
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#define BMA250_BW_REG 0x10
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#define BMA250_POWER_REG 0x11
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#define BMA250_RESET_REG 0x14
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#define BMA250_INT_ENABLE_REG 0x17
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#define BMA250_INT_MAP_REG 0x1a
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#define BMA250_INT_RESET_REG 0x21
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#define BMA250_RANGE_MASK GENMASK(3, 0) /* Range of accel values */
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#define BMA250_BW_MASK GENMASK(4, 0) /* Accel bandwidth */
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#define BMA250_SUSPEND_MASK BIT(7) /* chip will sleep */
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#define BMA250_LOWPOWER_MASK BIT(6)
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#define BMA250_DATA_INTEN_MASK BIT(4)
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#define BMA250_INT1_DATA_MASK BIT(0)
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#define BMA250_INT_RESET_MASK BIT(7) /* Reset pending interrupts */
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#define BMA254_RANGE_REG 0x0f
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#define BMA254_BW_REG 0x10
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#define BMA254_POWER_REG 0x11
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#define BMA254_RESET_REG 0x14
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#define BMA254_INT_ENABLE_REG 0x17
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#define BMA254_INT_MAP_REG 0x1a
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#define BMA254_INT_RESET_REG 0x21
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#define BMA254_RANGE_MASK GENMASK(3, 0) /* Range of accel values */
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#define BMA254_BW_MASK GENMASK(4, 0) /* Accel bandwidth */
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#define BMA254_SUSPEND_MASK BIT(7) /* chip will sleep */
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#define BMA254_LOWPOWER_MASK BIT(6)
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#define BMA254_DATA_INTEN_MASK BIT(4)
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#define BMA254_INT2_DATA_MASK BIT(7)
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#define BMA254_INT1_DATA_MASK BIT(0)
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#define BMA254_INT_RESET_MASK BIT(7) /* Reset pending interrupts */
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struct bma180_data {
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struct regulator *vdd_supply;
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struct regulator *vddio_supply;
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struct i2c_client *client;
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struct iio_trigger *trig;
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const struct bma180_part_info *part_info;
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struct iio_mount_matrix orientation;
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struct mutex mutex;
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bool sleep_state;
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int scale;
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int bw;
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bool pmode;
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u8 buff[16]; /* 3x 16-bit + 8-bit + padding + timestamp */
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};
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enum bma180_chan {
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AXIS_X,
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AXIS_Y,
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AXIS_Z,
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TEMP
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};
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static int bma023_bw_table[] = { 25, 50, 100, 190, 375, 750, 1500 }; /* Hz */
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static int bma023_scale_table[] = { 2452, 4903, 9709, };
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static int bma180_bw_table[] = { 10, 20, 40, 75, 150, 300 }; /* Hz */
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static int bma180_scale_table[] = { 1275, 1863, 2452, 3727, 4903, 9709, 19417 };
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static int bma25x_bw_table[] = { 8, 16, 31, 63, 125, 250 }; /* Hz */
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static int bma25x_scale_table[] = { 0, 0, 0, 38344, 0, 76590, 0, 0, 153180, 0,
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0, 0, 306458 };
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static int bma180_get_data_reg(struct bma180_data *data, enum bma180_chan chan)
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{
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int ret;
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if (data->sleep_state)
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return -EBUSY;
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switch (chan) {
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case TEMP:
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ret = i2c_smbus_read_byte_data(data->client, BMA180_TEMP);
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if (ret < 0)
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dev_err(&data->client->dev, "failed to read temp register\n");
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break;
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default:
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ret = i2c_smbus_read_word_data(data->client,
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BMA180_ACC_X_LSB + chan * 2);
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if (ret < 0)
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dev_err(&data->client->dev,
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"failed to read accel_%c register\n",
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'x' + chan);
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}
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return ret;
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}
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static int bma180_set_bits(struct bma180_data *data, u8 reg, u8 mask, u8 val)
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{
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int ret = i2c_smbus_read_byte_data(data->client, reg);
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u8 reg_val = (ret & ~mask) | (val << (ffs(mask) - 1));
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if (ret < 0)
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return ret;
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return i2c_smbus_write_byte_data(data->client, reg, reg_val);
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}
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static int bma180_reset_intr(struct bma180_data *data)
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{
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int ret = bma180_set_bits(data, data->part_info->int_reset_reg,
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data->part_info->int_reset_mask, 1);
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if (ret)
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dev_err(&data->client->dev, "failed to reset interrupt\n");
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return ret;
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}
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static int bma180_set_new_data_intr_state(struct bma180_data *data, bool state)
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{
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int ret = bma180_set_bits(data, data->part_info->int_enable_reg,
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data->part_info->int_enable_mask, state);
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if (ret)
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goto err;
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ret = bma180_reset_intr(data);
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if (ret)
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goto err;
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return 0;
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err:
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dev_err(&data->client->dev,
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"failed to set new data interrupt state %d\n", state);
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return ret;
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}
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static int bma180_set_sleep_state(struct bma180_data *data, bool state)
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{
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int ret = bma180_set_bits(data, data->part_info->sleep_reg,
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data->part_info->sleep_mask, state);
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if (ret) {
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dev_err(&data->client->dev,
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"failed to set sleep state %d\n", state);
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return ret;
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}
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data->sleep_state = state;
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return 0;
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}
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static int bma180_set_ee_writing_state(struct bma180_data *data, bool state)
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{
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int ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_EE_W, state);
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if (ret)
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dev_err(&data->client->dev,
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"failed to set ee writing state %d\n", state);
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return ret;
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}
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static int bma180_set_bw(struct bma180_data *data, int val)
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{
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int ret, i;
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if (data->sleep_state)
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return -EBUSY;
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for (i = 0; i < data->part_info->num_bw; ++i) {
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if (data->part_info->bw_table[i] == val) {
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ret = bma180_set_bits(data, data->part_info->bw_reg,
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data->part_info->bw_mask, i);
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if (ret) {
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dev_err(&data->client->dev,
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"failed to set bandwidth\n");
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return ret;
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}
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data->bw = val;
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return 0;
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}
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}
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return -EINVAL;
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}
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static int bma180_set_scale(struct bma180_data *data, int val)
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{
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int ret, i;
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if (data->sleep_state)
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return -EBUSY;
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for (i = 0; i < data->part_info->num_scales; ++i)
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if (data->part_info->scale_table[i] == val) {
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ret = bma180_set_bits(data, data->part_info->scale_reg,
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data->part_info->scale_mask, i);
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if (ret) {
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dev_err(&data->client->dev,
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"failed to set scale\n");
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return ret;
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}
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data->scale = val;
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return 0;
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}
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return -EINVAL;
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}
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static int bma180_set_pmode(struct bma180_data *data, bool mode)
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{
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u8 reg_val = mode ? data->part_info->lowpower_val : 0;
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int ret = bma180_set_bits(data, data->part_info->power_reg,
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data->part_info->power_mask, reg_val);
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if (ret) {
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dev_err(&data->client->dev, "failed to set power mode\n");
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return ret;
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}
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data->pmode = mode;
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return 0;
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}
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static int bma180_soft_reset(struct bma180_data *data)
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{
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int ret = i2c_smbus_write_byte_data(data->client,
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data->part_info->softreset_reg,
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data->part_info->softreset_val);
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if (ret)
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dev_err(&data->client->dev, "failed to reset the chip\n");
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return ret;
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}
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static int bma180_chip_init(struct bma180_data *data)
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{
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/* Try to read chip_id register. It must return 0x03. */
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int ret = i2c_smbus_read_byte_data(data->client, BMA180_CHIP_ID);
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if (ret < 0)
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return ret;
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if (ret != data->part_info->chip_id) {
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dev_err(&data->client->dev, "wrong chip ID %d expected %d\n",
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ret, data->part_info->chip_id);
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return -ENODEV;
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}
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ret = bma180_soft_reset(data);
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if (ret)
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return ret;
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/*
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* No serial transaction should occur within minimum 10 us
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* after soft_reset command
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*/
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msleep(20);
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return bma180_set_new_data_intr_state(data, false);
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}
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static int bma023_chip_config(struct bma180_data *data)
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{
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int ret = bma180_chip_init(data);
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if (ret)
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goto err;
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ret = bma180_set_bw(data, 50); /* 50 Hz */
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if (ret)
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goto err;
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ret = bma180_set_scale(data, 2452); /* 2 G */
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if (ret)
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goto err;
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return 0;
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err:
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dev_err(&data->client->dev, "failed to config the chip\n");
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return ret;
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}
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static int bma180_chip_config(struct bma180_data *data)
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{
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int ret = bma180_chip_init(data);
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if (ret)
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goto err;
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ret = bma180_set_pmode(data, false);
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if (ret)
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goto err;
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ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_DIS_WAKE_UP, 1);
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if (ret)
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goto err;
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ret = bma180_set_ee_writing_state(data, true);
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if (ret)
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goto err;
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ret = bma180_set_bits(data, BMA180_OFFSET_LSB1, BMA180_SMP_SKIP, 1);
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if (ret)
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goto err;
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ret = bma180_set_bw(data, 20); /* 20 Hz */
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if (ret)
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goto err;
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ret = bma180_set_scale(data, 2452); /* 2 G */
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if (ret)
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goto err;
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return 0;
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err:
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dev_err(&data->client->dev, "failed to config the chip\n");
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return ret;
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}
|
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static int bma25x_chip_config(struct bma180_data *data)
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{
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int ret = bma180_chip_init(data);
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if (ret)
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goto err;
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ret = bma180_set_pmode(data, false);
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if (ret)
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goto err;
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ret = bma180_set_bw(data, 16); /* 16 Hz */
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if (ret)
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goto err;
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ret = bma180_set_scale(data, 38344); /* 2 G */
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if (ret)
|
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goto err;
|
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/*
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* This enables dataready interrupt on the INT1 pin
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* FIXME: support using the INT2 pin
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*/
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ret = bma180_set_bits(data, data->part_info->int_map_reg,
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data->part_info->int_enable_dataready_int1_mask, 1);
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if (ret)
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goto err;
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return 0;
|
|
|
|
err:
|
|
dev_err(&data->client->dev, "failed to config the chip\n");
|
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return ret;
|
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}
|
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|
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static void bma023_chip_disable(struct bma180_data *data)
|
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{
|
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if (bma180_set_sleep_state(data, true))
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goto err;
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return;
|
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|
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err:
|
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dev_err(&data->client->dev, "failed to disable the chip\n");
|
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}
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|
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static void bma180_chip_disable(struct bma180_data *data)
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{
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if (bma180_set_new_data_intr_state(data, false))
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goto err;
|
|
if (bma180_set_ee_writing_state(data, false))
|
|
goto err;
|
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if (bma180_set_sleep_state(data, true))
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goto err;
|
|
|
|
return;
|
|
|
|
err:
|
|
dev_err(&data->client->dev, "failed to disable the chip\n");
|
|
}
|
|
|
|
static void bma25x_chip_disable(struct bma180_data *data)
|
|
{
|
|
if (bma180_set_new_data_intr_state(data, false))
|
|
goto err;
|
|
if (bma180_set_sleep_state(data, true))
|
|
goto err;
|
|
|
|
return;
|
|
|
|
err:
|
|
dev_err(&data->client->dev, "failed to disable the chip\n");
|
|
}
|
|
|
|
static ssize_t bma180_show_avail(char *buf, const int *vals, unsigned int n,
|
|
bool micros)
|
|
{
|
|
size_t len = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < n; i++) {
|
|
if (!vals[i])
|
|
continue;
|
|
len += scnprintf(buf + len, PAGE_SIZE - len,
|
|
micros ? "0.%06d " : "%d ", vals[i]);
|
|
}
|
|
buf[len - 1] = '\n';
|
|
|
|
return len;
|
|
}
|
|
|
|
static ssize_t bma180_show_filter_freq_avail(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct bma180_data *data = iio_priv(dev_to_iio_dev(dev));
|
|
|
|
return bma180_show_avail(buf, data->part_info->bw_table,
|
|
data->part_info->num_bw, false);
|
|
}
|
|
|
|
static ssize_t bma180_show_scale_avail(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct bma180_data *data = iio_priv(dev_to_iio_dev(dev));
|
|
|
|
return bma180_show_avail(buf, data->part_info->scale_table,
|
|
data->part_info->num_scales, true);
|
|
}
|
|
|
|
static IIO_DEVICE_ATTR(in_accel_filter_low_pass_3db_frequency_available,
|
|
S_IRUGO, bma180_show_filter_freq_avail, NULL, 0);
|
|
|
|
static IIO_DEVICE_ATTR(in_accel_scale_available,
|
|
S_IRUGO, bma180_show_scale_avail, NULL, 0);
|
|
|
|
static struct attribute *bma180_attributes[] = {
|
|
&iio_dev_attr_in_accel_filter_low_pass_3db_frequency_available.
|
|
dev_attr.attr,
|
|
&iio_dev_attr_in_accel_scale_available.dev_attr.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group bma180_attrs_group = {
|
|
.attrs = bma180_attributes,
|
|
};
|
|
|
|
static int bma180_read_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan, int *val, int *val2,
|
|
long mask)
|
|
{
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_RAW:
|
|
ret = iio_device_claim_direct_mode(indio_dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = bma180_get_data_reg(data, chan->scan_index);
|
|
mutex_unlock(&data->mutex);
|
|
iio_device_release_direct_mode(indio_dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (chan->scan_type.sign == 's') {
|
|
*val = sign_extend32(ret >> chan->scan_type.shift,
|
|
chan->scan_type.realbits - 1);
|
|
} else {
|
|
*val = ret;
|
|
}
|
|
return IIO_VAL_INT;
|
|
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
|
|
*val = data->bw;
|
|
return IIO_VAL_INT;
|
|
case IIO_CHAN_INFO_SCALE:
|
|
switch (chan->type) {
|
|
case IIO_ACCEL:
|
|
*val = 0;
|
|
*val2 = data->scale;
|
|
return IIO_VAL_INT_PLUS_MICRO;
|
|
case IIO_TEMP:
|
|
*val = 500;
|
|
return IIO_VAL_INT;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
case IIO_CHAN_INFO_OFFSET:
|
|
*val = data->part_info->temp_offset;
|
|
return IIO_VAL_INT;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static int bma180_write_raw(struct iio_dev *indio_dev,
|
|
struct iio_chan_spec const *chan, int val, int val2, long mask)
|
|
{
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
switch (mask) {
|
|
case IIO_CHAN_INFO_SCALE:
|
|
if (val)
|
|
return -EINVAL;
|
|
mutex_lock(&data->mutex);
|
|
ret = bma180_set_scale(data, val2);
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
|
|
if (val2)
|
|
return -EINVAL;
|
|
mutex_lock(&data->mutex);
|
|
ret = bma180_set_bw(data, val);
|
|
mutex_unlock(&data->mutex);
|
|
return ret;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
static const struct iio_info bma180_info = {
|
|
.attrs = &bma180_attrs_group,
|
|
.read_raw = bma180_read_raw,
|
|
.write_raw = bma180_write_raw,
|
|
};
|
|
|
|
static const char * const bma180_power_modes[] = { "low_noise", "low_power" };
|
|
|
|
static int bma180_get_power_mode(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan)
|
|
{
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
|
|
return data->pmode;
|
|
}
|
|
|
|
static int bma180_set_power_mode(struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan, unsigned int mode)
|
|
{
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = bma180_set_pmode(data, mode);
|
|
mutex_unlock(&data->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const struct iio_mount_matrix *
|
|
bma180_accel_get_mount_matrix(const struct iio_dev *indio_dev,
|
|
const struct iio_chan_spec *chan)
|
|
{
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
|
|
return &data->orientation;
|
|
}
|
|
|
|
static const struct iio_enum bma180_power_mode_enum = {
|
|
.items = bma180_power_modes,
|
|
.num_items = ARRAY_SIZE(bma180_power_modes),
|
|
.get = bma180_get_power_mode,
|
|
.set = bma180_set_power_mode,
|
|
};
|
|
|
|
static const struct iio_chan_spec_ext_info bma023_ext_info[] = {
|
|
IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
|
|
{ }
|
|
};
|
|
|
|
static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
|
|
IIO_ENUM("power_mode", true, &bma180_power_mode_enum),
|
|
IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
|
|
IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
|
|
{ }
|
|
};
|
|
|
|
#define BMA023_ACC_CHANNEL(_axis, _bits) { \
|
|
.type = IIO_ACCEL, \
|
|
.modified = 1, \
|
|
.channel2 = IIO_MOD_##_axis, \
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
|
|
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
|
|
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
|
|
.scan_index = AXIS_##_axis, \
|
|
.scan_type = { \
|
|
.sign = 's', \
|
|
.realbits = _bits, \
|
|
.storagebits = 16, \
|
|
.shift = 16 - _bits, \
|
|
}, \
|
|
.ext_info = bma023_ext_info, \
|
|
}
|
|
|
|
#define BMA150_TEMP_CHANNEL { \
|
|
.type = IIO_TEMP, \
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
|
|
BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), \
|
|
.scan_index = TEMP, \
|
|
.scan_type = { \
|
|
.sign = 'u', \
|
|
.realbits = 8, \
|
|
.storagebits = 16, \
|
|
}, \
|
|
}
|
|
|
|
#define BMA180_ACC_CHANNEL(_axis, _bits) { \
|
|
.type = IIO_ACCEL, \
|
|
.modified = 1, \
|
|
.channel2 = IIO_MOD_##_axis, \
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
|
|
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
|
|
BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
|
|
.scan_index = AXIS_##_axis, \
|
|
.scan_type = { \
|
|
.sign = 's', \
|
|
.realbits = _bits, \
|
|
.storagebits = 16, \
|
|
.shift = 16 - _bits, \
|
|
}, \
|
|
.ext_info = bma180_ext_info, \
|
|
}
|
|
|
|
#define BMA180_TEMP_CHANNEL { \
|
|
.type = IIO_TEMP, \
|
|
.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
|
|
BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET), \
|
|
.scan_index = TEMP, \
|
|
.scan_type = { \
|
|
.sign = 's', \
|
|
.realbits = 8, \
|
|
.storagebits = 16, \
|
|
}, \
|
|
}
|
|
|
|
static const struct iio_chan_spec bma023_channels[] = {
|
|
BMA023_ACC_CHANNEL(X, 10),
|
|
BMA023_ACC_CHANNEL(Y, 10),
|
|
BMA023_ACC_CHANNEL(Z, 10),
|
|
IIO_CHAN_SOFT_TIMESTAMP(4),
|
|
};
|
|
|
|
static const struct iio_chan_spec bma150_channels[] = {
|
|
BMA023_ACC_CHANNEL(X, 10),
|
|
BMA023_ACC_CHANNEL(Y, 10),
|
|
BMA023_ACC_CHANNEL(Z, 10),
|
|
BMA150_TEMP_CHANNEL,
|
|
IIO_CHAN_SOFT_TIMESTAMP(4),
|
|
};
|
|
|
|
static const struct iio_chan_spec bma180_channels[] = {
|
|
BMA180_ACC_CHANNEL(X, 14),
|
|
BMA180_ACC_CHANNEL(Y, 14),
|
|
BMA180_ACC_CHANNEL(Z, 14),
|
|
BMA180_TEMP_CHANNEL,
|
|
IIO_CHAN_SOFT_TIMESTAMP(4),
|
|
};
|
|
|
|
static const struct iio_chan_spec bma250_channels[] = {
|
|
BMA180_ACC_CHANNEL(X, 10),
|
|
BMA180_ACC_CHANNEL(Y, 10),
|
|
BMA180_ACC_CHANNEL(Z, 10),
|
|
BMA180_TEMP_CHANNEL,
|
|
IIO_CHAN_SOFT_TIMESTAMP(4),
|
|
};
|
|
|
|
static const struct iio_chan_spec bma254_channels[] = {
|
|
BMA180_ACC_CHANNEL(X, 12),
|
|
BMA180_ACC_CHANNEL(Y, 12),
|
|
BMA180_ACC_CHANNEL(Z, 12),
|
|
BMA180_TEMP_CHANNEL,
|
|
IIO_CHAN_SOFT_TIMESTAMP(4),
|
|
};
|
|
|
|
static const struct bma180_part_info bma180_part_info[] = {
|
|
[BMA023] = {
|
|
.chip_id = BMA023_ID_REG_VAL,
|
|
.channels = bma023_channels,
|
|
.num_channels = ARRAY_SIZE(bma023_channels),
|
|
.scale_table = bma023_scale_table,
|
|
.num_scales = ARRAY_SIZE(bma023_scale_table),
|
|
.bw_table = bma023_bw_table,
|
|
.num_bw = ARRAY_SIZE(bma023_bw_table),
|
|
/* No temperature channel */
|
|
.temp_offset = 0,
|
|
.int_reset_reg = BMA023_CTRL_REG0,
|
|
.int_reset_mask = BMA023_INT_RESET_MASK,
|
|
.sleep_reg = BMA023_CTRL_REG0,
|
|
.sleep_mask = BMA023_SLEEP,
|
|
.bw_reg = BMA023_CTRL_REG2,
|
|
.bw_mask = BMA023_BW_MASK,
|
|
.scale_reg = BMA023_CTRL_REG2,
|
|
.scale_mask = BMA023_RANGE_MASK,
|
|
/* No power mode on bma023 */
|
|
.power_reg = 0,
|
|
.power_mask = 0,
|
|
.lowpower_val = 0,
|
|
.int_enable_reg = BMA023_CTRL_REG3,
|
|
.int_enable_mask = BMA023_NEW_DATA_INT,
|
|
.softreset_reg = BMA023_CTRL_REG0,
|
|
.softreset_val = BMA023_RESET_VAL,
|
|
.chip_config = bma023_chip_config,
|
|
.chip_disable = bma023_chip_disable,
|
|
},
|
|
[BMA150] = {
|
|
.chip_id = BMA023_ID_REG_VAL,
|
|
.channels = bma150_channels,
|
|
.num_channels = ARRAY_SIZE(bma150_channels),
|
|
.scale_table = bma023_scale_table,
|
|
.num_scales = ARRAY_SIZE(bma023_scale_table),
|
|
.bw_table = bma023_bw_table,
|
|
.num_bw = ARRAY_SIZE(bma023_bw_table),
|
|
.temp_offset = -60, /* 0 LSB @ -30 degree C */
|
|
.int_reset_reg = BMA023_CTRL_REG0,
|
|
.int_reset_mask = BMA023_INT_RESET_MASK,
|
|
.sleep_reg = BMA023_CTRL_REG0,
|
|
.sleep_mask = BMA023_SLEEP,
|
|
.bw_reg = BMA023_CTRL_REG2,
|
|
.bw_mask = BMA023_BW_MASK,
|
|
.scale_reg = BMA023_CTRL_REG2,
|
|
.scale_mask = BMA023_RANGE_MASK,
|
|
/* No power mode on bma150 */
|
|
.power_reg = 0,
|
|
.power_mask = 0,
|
|
.lowpower_val = 0,
|
|
.int_enable_reg = BMA023_CTRL_REG3,
|
|
.int_enable_mask = BMA023_NEW_DATA_INT,
|
|
.softreset_reg = BMA023_CTRL_REG0,
|
|
.softreset_val = BMA023_RESET_VAL,
|
|
.chip_config = bma023_chip_config,
|
|
.chip_disable = bma023_chip_disable,
|
|
},
|
|
[BMA180] = {
|
|
.chip_id = BMA180_ID_REG_VAL,
|
|
.channels = bma180_channels,
|
|
.num_channels = ARRAY_SIZE(bma180_channels),
|
|
.scale_table = bma180_scale_table,
|
|
.num_scales = ARRAY_SIZE(bma180_scale_table),
|
|
.bw_table = bma180_bw_table,
|
|
.num_bw = ARRAY_SIZE(bma180_bw_table),
|
|
.temp_offset = 48, /* 0 LSB @ 24 degree C */
|
|
.int_reset_reg = BMA180_CTRL_REG0,
|
|
.int_reset_mask = BMA180_RESET_INT,
|
|
.sleep_reg = BMA180_CTRL_REG0,
|
|
.sleep_mask = BMA180_SLEEP,
|
|
.bw_reg = BMA180_BW_TCS,
|
|
.bw_mask = BMA180_BW,
|
|
.scale_reg = BMA180_OFFSET_LSB1,
|
|
.scale_mask = BMA180_RANGE,
|
|
.power_reg = BMA180_TCO_Z,
|
|
.power_mask = BMA180_MODE_CONFIG,
|
|
.lowpower_val = BMA180_LOW_POWER,
|
|
.int_enable_reg = BMA180_CTRL_REG3,
|
|
.int_enable_mask = BMA180_NEW_DATA_INT,
|
|
.softreset_reg = BMA180_RESET,
|
|
.softreset_val = BMA180_RESET_VAL,
|
|
.chip_config = bma180_chip_config,
|
|
.chip_disable = bma180_chip_disable,
|
|
},
|
|
[BMA250] = {
|
|
.chip_id = BMA250_ID_REG_VAL,
|
|
.channels = bma250_channels,
|
|
.num_channels = ARRAY_SIZE(bma250_channels),
|
|
.scale_table = bma25x_scale_table,
|
|
.num_scales = ARRAY_SIZE(bma25x_scale_table),
|
|
.bw_table = bma25x_bw_table,
|
|
.num_bw = ARRAY_SIZE(bma25x_bw_table),
|
|
.temp_offset = 48, /* 0 LSB @ 24 degree C */
|
|
.int_reset_reg = BMA250_INT_RESET_REG,
|
|
.int_reset_mask = BMA250_INT_RESET_MASK,
|
|
.sleep_reg = BMA250_POWER_REG,
|
|
.sleep_mask = BMA250_SUSPEND_MASK,
|
|
.bw_reg = BMA250_BW_REG,
|
|
.bw_mask = BMA250_BW_MASK,
|
|
.scale_reg = BMA250_RANGE_REG,
|
|
.scale_mask = BMA250_RANGE_MASK,
|
|
.power_reg = BMA250_POWER_REG,
|
|
.power_mask = BMA250_LOWPOWER_MASK,
|
|
.lowpower_val = 1,
|
|
.int_enable_reg = BMA250_INT_ENABLE_REG,
|
|
.int_enable_mask = BMA250_DATA_INTEN_MASK,
|
|
.int_map_reg = BMA250_INT_MAP_REG,
|
|
.int_enable_dataready_int1_mask = BMA250_INT1_DATA_MASK,
|
|
.softreset_reg = BMA250_RESET_REG,
|
|
.softreset_val = BMA180_RESET_VAL,
|
|
.chip_config = bma25x_chip_config,
|
|
.chip_disable = bma25x_chip_disable,
|
|
},
|
|
[BMA254] = {
|
|
.chip_id = BMA254_ID_REG_VAL,
|
|
.channels = bma254_channels,
|
|
.num_channels = ARRAY_SIZE(bma254_channels),
|
|
.scale_table = bma25x_scale_table,
|
|
.num_scales = ARRAY_SIZE(bma25x_scale_table),
|
|
.bw_table = bma25x_bw_table,
|
|
.num_bw = ARRAY_SIZE(bma25x_bw_table),
|
|
.temp_offset = 46, /* 0 LSB @ 23 degree C */
|
|
.int_reset_reg = BMA254_INT_RESET_REG,
|
|
.int_reset_mask = BMA254_INT_RESET_MASK,
|
|
.sleep_reg = BMA254_POWER_REG,
|
|
.sleep_mask = BMA254_SUSPEND_MASK,
|
|
.bw_reg = BMA254_BW_REG,
|
|
.bw_mask = BMA254_BW_MASK,
|
|
.scale_reg = BMA254_RANGE_REG,
|
|
.scale_mask = BMA254_RANGE_MASK,
|
|
.power_reg = BMA254_POWER_REG,
|
|
.power_mask = BMA254_LOWPOWER_MASK,
|
|
.lowpower_val = 1,
|
|
.int_enable_reg = BMA254_INT_ENABLE_REG,
|
|
.int_enable_mask = BMA254_DATA_INTEN_MASK,
|
|
.int_map_reg = BMA254_INT_MAP_REG,
|
|
.int_enable_dataready_int1_mask = BMA254_INT1_DATA_MASK,
|
|
.softreset_reg = BMA254_RESET_REG,
|
|
.softreset_val = BMA180_RESET_VAL,
|
|
.chip_config = bma25x_chip_config,
|
|
.chip_disable = bma25x_chip_disable,
|
|
},
|
|
};
|
|
|
|
static irqreturn_t bma180_trigger_handler(int irq, void *p)
|
|
{
|
|
struct iio_poll_func *pf = p;
|
|
struct iio_dev *indio_dev = pf->indio_dev;
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
s64 time_ns = iio_get_time_ns(indio_dev);
|
|
int bit, ret, i = 0;
|
|
|
|
mutex_lock(&data->mutex);
|
|
|
|
for_each_set_bit(bit, indio_dev->active_scan_mask,
|
|
indio_dev->masklength) {
|
|
ret = bma180_get_data_reg(data, bit);
|
|
if (ret < 0) {
|
|
mutex_unlock(&data->mutex);
|
|
goto err;
|
|
}
|
|
((s16 *)data->buff)[i++] = ret;
|
|
}
|
|
|
|
mutex_unlock(&data->mutex);
|
|
|
|
iio_push_to_buffers_with_timestamp(indio_dev, data->buff, time_ns);
|
|
err:
|
|
iio_trigger_notify_done(indio_dev->trig);
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int bma180_data_rdy_trigger_set_state(struct iio_trigger *trig,
|
|
bool state)
|
|
{
|
|
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
|
|
return bma180_set_new_data_intr_state(data, state);
|
|
}
|
|
|
|
static int bma180_trig_try_reen(struct iio_trigger *trig)
|
|
{
|
|
struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
|
|
return bma180_reset_intr(data);
|
|
}
|
|
|
|
static const struct iio_trigger_ops bma180_trigger_ops = {
|
|
.set_trigger_state = bma180_data_rdy_trigger_set_state,
|
|
.try_reenable = bma180_trig_try_reen,
|
|
};
|
|
|
|
static int bma180_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct bma180_data *data;
|
|
struct iio_dev *indio_dev;
|
|
enum chip_ids chip;
|
|
int ret;
|
|
|
|
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;
|
|
if (client->dev.of_node)
|
|
chip = (enum chip_ids)of_device_get_match_data(dev);
|
|
else
|
|
chip = id->driver_data;
|
|
data->part_info = &bma180_part_info[chip];
|
|
|
|
ret = iio_read_mount_matrix(dev, "mount-matrix",
|
|
&data->orientation);
|
|
if (ret)
|
|
return ret;
|
|
|
|
data->vdd_supply = devm_regulator_get(dev, "vdd");
|
|
if (IS_ERR(data->vdd_supply)) {
|
|
if (PTR_ERR(data->vdd_supply) != -EPROBE_DEFER)
|
|
dev_err(dev, "Failed to get vdd regulator %d\n",
|
|
(int)PTR_ERR(data->vdd_supply));
|
|
return PTR_ERR(data->vdd_supply);
|
|
}
|
|
data->vddio_supply = devm_regulator_get(dev, "vddio");
|
|
if (IS_ERR(data->vddio_supply)) {
|
|
if (PTR_ERR(data->vddio_supply) != -EPROBE_DEFER)
|
|
dev_err(dev, "Failed to get vddio regulator %d\n",
|
|
(int)PTR_ERR(data->vddio_supply));
|
|
return PTR_ERR(data->vddio_supply);
|
|
}
|
|
/* Typical voltage 2.4V these are min and max */
|
|
ret = regulator_set_voltage(data->vdd_supply, 1620000, 3600000);
|
|
if (ret)
|
|
return ret;
|
|
ret = regulator_set_voltage(data->vddio_supply, 1200000, 3600000);
|
|
if (ret)
|
|
return ret;
|
|
ret = regulator_enable(data->vdd_supply);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to enable vdd regulator: %d\n", ret);
|
|
return ret;
|
|
}
|
|
ret = regulator_enable(data->vddio_supply);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to enable vddio regulator: %d\n", ret);
|
|
goto err_disable_vdd;
|
|
}
|
|
/* Wait to make sure we started up properly (3 ms at least) */
|
|
usleep_range(3000, 5000);
|
|
|
|
ret = data->part_info->chip_config(data);
|
|
if (ret < 0)
|
|
goto err_chip_disable;
|
|
|
|
mutex_init(&data->mutex);
|
|
indio_dev->channels = data->part_info->channels;
|
|
indio_dev->num_channels = data->part_info->num_channels;
|
|
indio_dev->name = id->name;
|
|
indio_dev->modes = INDIO_DIRECT_MODE;
|
|
indio_dev->info = &bma180_info;
|
|
|
|
if (client->irq > 0) {
|
|
data->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
|
|
indio_dev->id);
|
|
if (!data->trig) {
|
|
ret = -ENOMEM;
|
|
goto err_chip_disable;
|
|
}
|
|
|
|
ret = devm_request_irq(dev, client->irq,
|
|
iio_trigger_generic_data_rdy_poll, IRQF_TRIGGER_RISING,
|
|
"bma180_event", data->trig);
|
|
if (ret) {
|
|
dev_err(dev, "unable to request IRQ\n");
|
|
goto err_trigger_free;
|
|
}
|
|
|
|
data->trig->dev.parent = dev;
|
|
data->trig->ops = &bma180_trigger_ops;
|
|
iio_trigger_set_drvdata(data->trig, indio_dev);
|
|
indio_dev->trig = iio_trigger_get(data->trig);
|
|
|
|
ret = iio_trigger_register(data->trig);
|
|
if (ret)
|
|
goto err_trigger_free;
|
|
}
|
|
|
|
ret = iio_triggered_buffer_setup(indio_dev, NULL,
|
|
bma180_trigger_handler, NULL);
|
|
if (ret < 0) {
|
|
dev_err(dev, "unable to setup iio triggered buffer\n");
|
|
goto err_trigger_unregister;
|
|
}
|
|
|
|
ret = iio_device_register(indio_dev);
|
|
if (ret < 0) {
|
|
dev_err(dev, "unable to register iio device\n");
|
|
goto err_buffer_cleanup;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_buffer_cleanup:
|
|
iio_triggered_buffer_cleanup(indio_dev);
|
|
err_trigger_unregister:
|
|
if (data->trig)
|
|
iio_trigger_unregister(data->trig);
|
|
err_trigger_free:
|
|
iio_trigger_free(data->trig);
|
|
err_chip_disable:
|
|
data->part_info->chip_disable(data);
|
|
regulator_disable(data->vddio_supply);
|
|
err_disable_vdd:
|
|
regulator_disable(data->vdd_supply);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int bma180_remove(struct i2c_client *client)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(client);
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
|
|
iio_device_unregister(indio_dev);
|
|
iio_triggered_buffer_cleanup(indio_dev);
|
|
if (data->trig) {
|
|
iio_trigger_unregister(data->trig);
|
|
iio_trigger_free(data->trig);
|
|
}
|
|
|
|
mutex_lock(&data->mutex);
|
|
data->part_info->chip_disable(data);
|
|
mutex_unlock(&data->mutex);
|
|
regulator_disable(data->vddio_supply);
|
|
regulator_disable(data->vdd_supply);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int bma180_suspend(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = bma180_set_sleep_state(data, true);
|
|
mutex_unlock(&data->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int bma180_resume(struct device *dev)
|
|
{
|
|
struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
|
|
struct bma180_data *data = iio_priv(indio_dev);
|
|
int ret;
|
|
|
|
mutex_lock(&data->mutex);
|
|
ret = bma180_set_sleep_state(data, false);
|
|
mutex_unlock(&data->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static SIMPLE_DEV_PM_OPS(bma180_pm_ops, bma180_suspend, bma180_resume);
|
|
#define BMA180_PM_OPS (&bma180_pm_ops)
|
|
#else
|
|
#define BMA180_PM_OPS NULL
|
|
#endif
|
|
|
|
static const struct i2c_device_id bma180_ids[] = {
|
|
{ "bma023", BMA023 },
|
|
{ "bma150", BMA150 },
|
|
{ "bma180", BMA180 },
|
|
{ "bma250", BMA250 },
|
|
{ "bma254", BMA254 },
|
|
{ "smb380", BMA150 },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, bma180_ids);
|
|
|
|
static const struct of_device_id bma180_of_match[] = {
|
|
{
|
|
.compatible = "bosch,bma023",
|
|
.data = (void *)BMA023
|
|
},
|
|
{
|
|
.compatible = "bosch,bma150",
|
|
.data = (void *)BMA150
|
|
},
|
|
{
|
|
.compatible = "bosch,bma180",
|
|
.data = (void *)BMA180
|
|
},
|
|
{
|
|
.compatible = "bosch,bma250",
|
|
.data = (void *)BMA250
|
|
},
|
|
{
|
|
.compatible = "bosch,bma254",
|
|
.data = (void *)BMA254
|
|
},
|
|
{
|
|
.compatible = "bosch,smb380",
|
|
.data = (void *)BMA150
|
|
},
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, bma180_of_match);
|
|
|
|
static struct i2c_driver bma180_driver = {
|
|
.driver = {
|
|
.name = "bma180",
|
|
.pm = BMA180_PM_OPS,
|
|
.of_match_table = bma180_of_match,
|
|
},
|
|
.probe = bma180_probe,
|
|
.remove = bma180_remove,
|
|
.id_table = bma180_ids,
|
|
};
|
|
|
|
module_i2c_driver(bma180_driver);
|
|
|
|
MODULE_AUTHOR("Kravchenko Oleksandr <x0199363@ti.com>");
|
|
MODULE_AUTHOR("Texas Instruments, Inc.");
|
|
MODULE_DESCRIPTION("Bosch BMA023/BMA1x0/BMA25x triaxial acceleration sensor");
|
|
MODULE_LICENSE("GPL");
|