diff options
Diffstat (limited to 'drivers/staging/iio/accel')
21 files changed, 3544 insertions, 241 deletions
diff --git a/drivers/staging/iio/accel/Kconfig b/drivers/staging/iio/accel/Kconfig index 3d3c3339dbc7..b4e57d1bc87d 100644 --- a/drivers/staging/iio/accel/Kconfig +++ b/drivers/staging/iio/accel/Kconfig @@ -3,6 +3,31 @@ # comment "Accelerometers" +config ADIS16209 + tristate "Analog Devices ADIS16209 Dual-Axis Digital Inclinometer and Accelerometer" + depends on SPI + select IIO_TRIGGER if IIO_RING_BUFFER + select IIO_SW_RING if IIO_RING_BUFFER + help + Say yes here to build support for Analog Devices adis16209 dual-axis digital inclinometer + and accelerometer. + +config ADIS16220 + tristate "Analog Devices ADIS16220 Programmable Digital Vibration Sensor driver" + depends on SPI + help + Say yes here to build support for Analog Devices adis16220 programmable + digital vibration sensor. + +config ADIS16240 + tristate "Analog Devices ADIS16240 Programmable Impact Sensor and Recorder" + depends on SPI + select IIO_TRIGGER if IIO_RING_BUFFER + select IIO_SW_RING if IIO_RING_BUFFER + help + Say yes here to build support for Analog Devices adis16240 programmable + impact Sensor and recorder. + config KXSD9 tristate "Kionix KXSD9 Accelerometer Driver" depends on SPI diff --git a/drivers/staging/iio/accel/Makefile b/drivers/staging/iio/accel/Makefile index d5335f9094ad..c34b13634c2d 100644 --- a/drivers/staging/iio/accel/Makefile +++ b/drivers/staging/iio/accel/Makefile @@ -1,6 +1,17 @@ # # Makefile for industrial I/O accelerometer drivers # +adis16209-y := adis16209_core.o +adis16209-$(CONFIG_IIO_RING_BUFFER) += adis16209_ring.o adis16209_trigger.o +obj-$(CONFIG_ADIS16209) += adis16209.o + +adis16220-y := adis16220_core.o +obj-$(CONFIG_ADIS16220) += adis16220.o + +adis16240-y := adis16240_core.o +adis16240-$(CONFIG_IIO_RING_BUFFER) += adis16240_ring.o adis16240_trigger.o +obj-$(CONFIG_ADIS16240) += adis16240.o + obj-$(CONFIG_KXSD9) += kxsd9.o lis3l02dq-y := lis3l02dq_core.o diff --git a/drivers/staging/iio/accel/accel.h b/drivers/staging/iio/accel/accel.h index d7fc7f98348e..1b6e37f76200 100644 --- a/drivers/staging/iio/accel/accel.h +++ b/drivers/staging/iio/accel/accel.h @@ -2,6 +2,8 @@ #include "../sysfs.h" /* Accelerometer types of attribute */ +#define IIO_DEV_ATTR_ACCEL_OFFSET(_mode, _show, _store, _addr) \ + IIO_DEVICE_ATTR(accel_offset, _mode, _show, _store, _addr) #define IIO_DEV_ATTR_ACCEL_X_OFFSET(_mode, _show, _store, _addr) \ IIO_DEVICE_ATTR(accel_x_offset, _mode, _show, _store, _addr) @@ -21,14 +23,17 @@ #define IIO_DEV_ATTR_ACCEL_Z_GAIN(_mode, _show, _store, _addr) \ IIO_DEVICE_ATTR(accel_z_gain, _mode, _show, _store, _addr) +#define IIO_DEV_ATTR_ACCEL(_show, _addr) \ + IIO_DEVICE_ATTR(accel_raw, S_IRUGO, _show, NULL, _addr) + #define IIO_DEV_ATTR_ACCEL_X(_show, _addr) \ - IIO_DEVICE_ATTR(accel_x, S_IRUGO, _show, NULL, _addr) + IIO_DEVICE_ATTR(accel_x_raw, S_IRUGO, _show, NULL, _addr) #define IIO_DEV_ATTR_ACCEL_Y(_show, _addr) \ - IIO_DEVICE_ATTR(accel_y, S_IRUGO, _show, NULL, _addr) + IIO_DEVICE_ATTR(accel_y_raw, S_IRUGO, _show, NULL, _addr) #define IIO_DEV_ATTR_ACCEL_Z(_show, _addr) \ - IIO_DEVICE_ATTR(accel_z, S_IRUGO, _show, NULL, _addr) + IIO_DEVICE_ATTR(accel_z_raw, S_IRUGO, _show, NULL, _addr) /* Thresholds are somewhat chip dependent - may need quite a few defs here */ /* For unified thresholds (shared across all directions */ @@ -61,7 +66,6 @@ #define IIO_DEV_ATTR_ACCEL_THRESH_Z(_mode, _show, _store, _addr) \ IIO_DEVICE_ATTR(thresh_accel_z, _mode, _show, _store, _addr) - /** * IIO_EVENT_ATTR_ACCEL_X_HIGH: threshold event, x acceleration * @_show: read x acceleration high threshold diff --git a/drivers/staging/iio/accel/adis16209.h b/drivers/staging/iio/accel/adis16209.h new file mode 100644 index 000000000000..877fd2a48380 --- /dev/null +++ b/drivers/staging/iio/accel/adis16209.h @@ -0,0 +1,193 @@ +#ifndef SPI_ADIS16209_H_ +#define SPI_ADIS16209_H_ + +#define ADIS16209_STARTUP_DELAY 220 /* ms */ + +#define ADIS16209_READ_REG(a) a +#define ADIS16209_WRITE_REG(a) ((a) | 0x80) + +/* Flash memory write count */ +#define ADIS16209_FLASH_CNT 0x00 +/* Output, power supply */ +#define ADIS16209_SUPPLY_OUT 0x02 +/* Output, x-axis accelerometer */ +#define ADIS16209_XACCL_OUT 0x04 +/* Output, y-axis accelerometer */ +#define ADIS16209_YACCL_OUT 0x06 +/* Output, auxiliary ADC input */ +#define ADIS16209_AUX_ADC 0x08 +/* Output, temperature */ +#define ADIS16209_TEMP_OUT 0x0A +/* Output, x-axis inclination */ +#define ADIS16209_XINCL_OUT 0x0C +/* Output, y-axis inclination */ +#define ADIS16209_YINCL_OUT 0x0E +/* Output, +/-180 vertical rotational position */ +#define ADIS16209_ROT_OUT 0x10 +/* Calibration, x-axis acceleration offset null */ +#define ADIS16209_XACCL_NULL 0x12 +/* Calibration, y-axis acceleration offset null */ +#define ADIS16209_YACCL_NULL 0x14 +/* Calibration, x-axis inclination offset null */ +#define ADIS16209_XINCL_NULL 0x16 +/* Calibration, y-axis inclination offset null */ +#define ADIS16209_YINCL_NULL 0x18 +/* Calibration, vertical rotation offset null */ +#define ADIS16209_ROT_NULL 0x1A +/* Alarm 1 amplitude threshold */ +#define ADIS16209_ALM_MAG1 0x20 +/* Alarm 2 amplitude threshold */ +#define ADIS16209_ALM_MAG2 0x22 +/* Alarm 1, sample period */ +#define ADIS16209_ALM_SMPL1 0x24 +/* Alarm 2, sample period */ +#define ADIS16209_ALM_SMPL2 0x26 +/* Alarm control */ +#define ADIS16209_ALM_CTRL 0x28 +/* Auxiliary DAC data */ +#define ADIS16209_AUX_DAC 0x30 +/* General-purpose digital input/output control */ +#define ADIS16209_GPIO_CTRL 0x32 +/* Miscellaneous control */ +#define ADIS16209_MSC_CTRL 0x34 +/* Internal sample period (rate) control */ +#define ADIS16209_SMPL_PRD 0x36 +/* Operation, filter configuration */ +#define ADIS16209_AVG_CNT 0x38 +/* Operation, sleep mode control */ +#define ADIS16209_SLP_CNT 0x3A +/* Diagnostics, system status register */ +#define ADIS16209_DIAG_STAT 0x3C +/* Operation, system command register */ +#define ADIS16209_GLOB_CMD 0x3E + +#define ADIS16209_OUTPUTS 8 + +/* MSC_CTRL */ +/* Self-test at power-on: 1 = disabled, 0 = enabled */ +#define ADIS16209_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) +/* Self-test enable */ +#define ADIS16209_MSC_CTRL_SELF_TEST_EN (1 << 8) +/* Data-ready enable: 1 = enabled, 0 = disabled */ +#define ADIS16209_MSC_CTRL_DATA_RDY_EN (1 << 2) +/* Data-ready polarity: 1 = active high, 0 = active low */ +#define ADIS16209_MSC_CTRL_ACTIVE_HIGH (1 << 1) +/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */ +#define ADIS16209_MSC_CTRL_DATA_RDY_DIO2 (1 << 0) + +/* DIAG_STAT */ +/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16209_DIAG_STAT_ALARM2 (1<<9) +/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16209_DIAG_STAT_ALARM1 (1<<8) +/* Self-test diagnostic error flag: 1 = error condition, 0 = normal operation */ +#define ADIS16209_DIAG_STAT_SELFTEST_FAIL (1<<5) +/* SPI communications failure */ +#define ADIS16209_DIAG_STAT_SPI_FAIL (1<<3) +/* Flash update failure */ +#define ADIS16209_DIAG_STAT_FLASH_UPT (1<<2) +/* Power supply above 3.625 V */ +#define ADIS16209_DIAG_STAT_POWER_HIGH (1<<1) +/* Power supply below 3.15 V */ +#define ADIS16209_DIAG_STAT_POWER_LOW (1<<0) + +/* GLOB_CMD */ +#define ADIS16209_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16209_GLOB_CMD_CLEAR_STAT (1<<4) +#define ADIS16209_GLOB_CMD_FACTORY_CAL (1<<1) + +#define ADIS16209_MAX_TX 24 +#define ADIS16209_MAX_RX 24 + +#define ADIS16209_ERROR_ACTIVE (1<<14) + +/** + * struct adis16209_state - device instance specific data + * @us: actual spi_device + * @work_trigger_to_ring: bh for triggered event handling + * @work_cont_thresh: CLEAN + * @inter: used to check if new interrupt has been triggered + * @last_timestamp: passing timestamp from th to bh of interrupt handler + * @indio_dev: industrial I/O device structure + * @trig: data ready trigger registered with iio + * @tx: transmit buffer + * @rx: recieve buffer + * @buf_lock: mutex to protect tx and rx + **/ +struct adis16209_state { + struct spi_device *us; + struct work_struct work_trigger_to_ring; + struct iio_work_cont work_cont_thresh; + s64 last_timestamp; + struct iio_dev *indio_dev; + struct iio_trigger *trig; + u8 *tx; + u8 *rx; + struct mutex buf_lock; +}; + +int adis16209_set_irq(struct device *dev, bool enable); + +#ifdef CONFIG_IIO_RING_BUFFER +enum adis16209_scan { + ADIS16209_SCAN_SUPPLY, + ADIS16209_SCAN_ACC_X, + ADIS16209_SCAN_ACC_Y, + ADIS16209_SCAN_AUX_ADC, + ADIS16209_SCAN_TEMP, + ADIS16209_SCAN_INCLI_X, + ADIS16209_SCAN_INCLI_Y, + ADIS16209_SCAN_ROT, +}; + +void adis16209_remove_trigger(struct iio_dev *indio_dev); +int adis16209_probe_trigger(struct iio_dev *indio_dev); + +ssize_t adis16209_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + +int adis16209_configure_ring(struct iio_dev *indio_dev); +void adis16209_unconfigure_ring(struct iio_dev *indio_dev); + +int adis16209_initialize_ring(struct iio_ring_buffer *ring); +void adis16209_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void adis16209_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int adis16209_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +adis16209_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int adis16209_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis16209_unconfigure_ring(struct iio_dev *indio_dev) +{ +} + +static inline int adis16209_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} + +static inline void adis16209_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ +#endif /* SPI_ADIS16209_H_ */ diff --git a/drivers/staging/iio/accel/adis16209_core.c b/drivers/staging/iio/accel/adis16209_core.c new file mode 100644 index 000000000000..ac375c50f56f --- /dev/null +++ b/drivers/staging/iio/accel/adis16209_core.c @@ -0,0 +1,615 @@ +/* + * ADIS16209 Programmable Digital Vibration Sensor driver + * + * Copyright 2010 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/gpio.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/spi/spi.h> + +#include <linux/sysfs.h> +#include <linux/list.h> + +#include "../iio.h" +#include "../sysfs.h" +#include "accel.h" +#include "inclinometer.h" +#include "../gyro/gyro.h" +#include "../adc/adc.h" + +#include "adis16209.h" + +#define DRIVER_NAME "adis16209" + +static int adis16209_check_status(struct device *dev); + +/** + * adis16209_spi_write_reg_8() - write single byte to a register + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the register to be written + * @val: the value to write + **/ +static int adis16209_spi_write_reg_8(struct device *dev, + u8 reg_address, + u8 val) +{ + int ret; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16209_state *st = iio_dev_get_devdata(indio_dev); + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16209_WRITE_REG(reg_address); + st->tx[1] = val; + + ret = spi_write(st->us, st->tx, 2); + mutex_unlock(&st->buf_lock); + + return ret; +} + +/** + * adis16209_spi_write_reg_16() - write 2 bytes to a pair of registers + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the lower of the two registers. Second register + * is assumed to have address one greater. + * @val: value to be written + **/ +static int adis16209_spi_write_reg_16(struct device *dev, + u8 lower_reg_address, + u16 value) +{ + int ret; + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16209_state *st = iio_dev_get_devdata(indio_dev); + struct spi_transfer xfers[] = { + { + .tx_buf = st->tx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + }, { + .tx_buf = st->tx + 2, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + }, + }; + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16209_WRITE_REG(lower_reg_address); + st->tx[1] = value & 0xFF; + st->tx[2] = ADIS16209_WRITE_REG(lower_reg_address + 1); + st->tx[3] = (value >> 8) & 0xFF; + + spi_message_init(&msg); + spi_message_add_tail(&xfers[0], &msg); + spi_message_add_tail(&xfers[1], &msg); + ret = spi_sync(st->us, &msg); + mutex_unlock(&st->buf_lock); + + return ret; +} + +/** + * adis16209_spi_read_reg_16() - read 2 bytes from a 16-bit register + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the lower of the two registers. Second register + * is assumed to have address one greater. + * @val: somewhere to pass back the value read + **/ +static int adis16209_spi_read_reg_16(struct device *dev, + u8 lower_reg_address, + u16 *val) +{ + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16209_state *st = iio_dev_get_devdata(indio_dev); + int ret; + struct spi_transfer xfers[] = { + { + .tx_buf = st->tx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 20, + }, { + .rx_buf = st->rx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 20, + }, + }; + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16209_READ_REG(lower_reg_address); + st->tx[1] = 0; + + spi_message_init(&msg); + spi_message_add_tail(&xfers[0], &msg); + spi_message_add_tail(&xfers[1], &msg); + ret = spi_sync(st->us, &msg); + if (ret) { + dev_err(&st->us->dev, + "problem when reading 16 bit register 0x%02X", + lower_reg_address); + goto error_ret; + } + *val = (st->rx[0] << 8) | st->rx[1]; + +error_ret: + mutex_unlock(&st->buf_lock); + return ret; +} + +static ssize_t adis16209_read_12bit_unsigned(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret; + u16 val = 0; + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + + ret = adis16209_spi_read_reg_16(dev, this_attr->address, &val); + if (ret) + return ret; + + if (val & ADIS16209_ERROR_ACTIVE) + adis16209_check_status(dev); + + return sprintf(buf, "%u\n", val & 0x0FFF); +} + +static ssize_t adis16209_read_14bit_unsigned(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret; + u16 val = 0; + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + + ret = adis16209_spi_read_reg_16(dev, this_attr->address, &val); + if (ret) + return ret; + + if (val & ADIS16209_ERROR_ACTIVE) + adis16209_check_status(dev); + + return sprintf(buf, "%u\n", val & 0x3FFF); +} + +static ssize_t adis16209_read_temp(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + ssize_t ret; + u16 val; + + /* Take the iio_dev status lock */ + mutex_lock(&indio_dev->mlock); + + ret = adis16209_spi_read_reg_16(dev, ADIS16209_TEMP_OUT, (u16 *)&val); + if (ret) + goto error_ret; + + if (val & ADIS16209_ERROR_ACTIVE) + adis16209_check_status(dev); + + val &= 0xFFF; + ret = sprintf(buf, "%d\n", val); + +error_ret: + mutex_unlock(&indio_dev->mlock); + return ret; +} + +static ssize_t adis16209_read_14bit_signed(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + s16 val = 0; + ssize_t ret; + + mutex_lock(&indio_dev->mlock); + + ret = adis16209_spi_read_reg_16(dev, this_attr->address, (u16 *)&val); + if (!ret) { + if (val & ADIS16209_ERROR_ACTIVE) + adis16209_check_status(dev); + + val = ((s16)(val << 2) >> 2); + ret = sprintf(buf, "%d\n", val); + } + + mutex_unlock(&indio_dev->mlock); + + return ret; +} + +static ssize_t adis16209_write_16bit(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t len) +{ + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + int ret; + long val; + + ret = strict_strtol(buf, 10, &val); + if (ret) + goto error_ret; + ret = adis16209_spi_write_reg_16(dev, this_attr->address, val); + +error_ret: + return ret ? ret : len; +} + +static int adis16209_reset(struct device *dev) +{ + int ret; + ret = adis16209_spi_write_reg_8(dev, + ADIS16209_GLOB_CMD, + ADIS16209_GLOB_CMD_SW_RESET); + if (ret) + dev_err(dev, "problem resetting device"); + + return ret; +} + +static ssize_t adis16209_write_reset(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + if (len < 1) + return -EINVAL; + switch (buf[0]) { + case '1': + case 'y': + case 'Y': + return adis16209_reset(dev); + } + return -EINVAL; +} + +int adis16209_set_irq(struct device *dev, bool enable) +{ + int ret = 0; + u16 msc; + + ret = adis16209_spi_read_reg_16(dev, ADIS16209_MSC_CTRL, &msc); + if (ret) + goto error_ret; + + msc |= ADIS16209_MSC_CTRL_ACTIVE_HIGH; + msc &= ~ADIS16209_MSC_CTRL_DATA_RDY_DIO2; + if (enable) + msc |= ADIS16209_MSC_CTRL_DATA_RDY_EN; + else + msc &= ~ADIS16209_MSC_CTRL_DATA_RDY_EN; + + ret = adis16209_spi_write_reg_16(dev, ADIS16209_MSC_CTRL, msc); + +error_ret: + return ret; +} + +static int adis16209_check_status(struct device *dev) +{ + u16 status; + int ret; + + ret = adis16209_spi_read_reg_16(dev, ADIS16209_DIAG_STAT, &status); + if (ret < 0) { + dev_err(dev, "Reading status failed\n"); + goto error_ret; + } + ret = status & 0x1F; + + if (status & ADIS16209_DIAG_STAT_SELFTEST_FAIL) + dev_err(dev, "Self test failure\n"); + if (status & ADIS16209_DIAG_STAT_SPI_FAIL) + dev_err(dev, "SPI failure\n"); + if (status & ADIS16209_DIAG_STAT_FLASH_UPT) + dev_err(dev, "Flash update failed\n"); + if (status & ADIS16209_DIAG_STAT_POWER_HIGH) + dev_err(dev, "Power supply above 3.625V\n"); + if (status & ADIS16209_DIAG_STAT_POWER_LOW) + dev_err(dev, "Power supply below 3.15V\n"); + +error_ret: + return ret; +} + +static int adis16209_self_test(struct device *dev) +{ + int ret; + ret = adis16209_spi_write_reg_16(dev, + ADIS16209_MSC_CTRL, + ADIS16209_MSC_CTRL_SELF_TEST_EN); + if (ret) { + dev_err(dev, "problem starting self test"); + goto err_ret; + } + + adis16209_check_status(dev); + +err_ret: + return ret; +} + +static int adis16209_initial_setup(struct adis16209_state *st) +{ + int ret; + struct device *dev = &st->indio_dev->dev; + + /* Disable IRQ */ + ret = adis16209_set_irq(dev, false); + if (ret) { + dev_err(dev, "disable irq failed"); + goto err_ret; + } + + /* Do self test */ + ret = adis16209_self_test(dev); + if (ret) { + dev_err(dev, "self test failure"); + goto err_ret; + } + + /* Read status register to check the result */ + ret = adis16209_check_status(dev); + if (ret) { + adis16209_reset(dev); + dev_err(dev, "device not playing ball -> reset"); + msleep(ADIS16209_STARTUP_DELAY); + ret = adis16209_check_status(dev); + if (ret) { + dev_err(dev, "giving up"); + goto err_ret; + } + } + + printk(KERN_INFO DRIVER_NAME ": at CS%d (irq %d)\n", + st->us->chip_select, st->us->irq); + +err_ret: + return ret; +} + +static IIO_DEV_ATTR_IN_NAMED_RAW(supply, adis16209_read_14bit_unsigned, + ADIS16209_SUPPLY_OUT); +static IIO_CONST_ATTR(in_supply_scale, "0.30518"); +static IIO_DEV_ATTR_IN_RAW(0, adis16209_read_12bit_unsigned, + ADIS16209_AUX_ADC); +static IIO_CONST_ATTR(in0_scale, "0.6105"); + +static IIO_DEV_ATTR_ACCEL_X(adis16209_read_14bit_signed, + ADIS16209_XACCL_OUT); +static IIO_DEV_ATTR_ACCEL_Y(adis16209_read_14bit_signed, + ADIS16209_YACCL_OUT); +static IIO_DEV_ATTR_ACCEL_X_OFFSET(S_IWUSR | S_IRUGO, + adis16209_read_14bit_signed, + adis16209_write_16bit, + ADIS16209_XACCL_NULL); +static IIO_DEV_ATTR_ACCEL_Y_OFFSET(S_IWUSR | S_IRUGO, + adis16209_read_14bit_signed, + adis16209_write_16bit, + ADIS16209_YACCL_NULL); +static IIO_CONST_ATTR(accel_scale, "0.24414"); + +static IIO_DEV_ATTR_INCLI_X(adis16209_read_14bit_signed, + ADIS16209_XINCL_OUT); +static IIO_DEV_ATTR_INCLI_Y(adis16209_read_14bit_signed, + ADIS16209_YINCL_OUT); +static IIO_DEV_ATTR_INCLI_X_OFFSET(S_IWUSR | S_IRUGO, + adis16209_read_14bit_signed, + adis16209_write_16bit, + ADIS16209_XACCL_NULL); +static IIO_DEV_ATTR_INCLI_Y_OFFSET(S_IWUSR | S_IRUGO, + adis16209_read_14bit_signed, + adis16209_write_16bit, + ADIS16209_YACCL_NULL); +static IIO_CONST_ATTR(incli_scale, "0.025"); + +static IIO_DEVICE_ATTR(rot_raw, S_IRUGO, adis16209_read_14bit_signed, + NULL, ADIS16209_ROT_OUT); + +static IIO_DEV_ATTR_TEMP(adis16209_read_temp); +static IIO_CONST_ATTR(temp_offset, "25"); +static IIO_CONST_ATTR(temp_scale, "-0.47"); + +static IIO_DEVICE_ATTR(reset, S_IWUSR, NULL, adis16209_write_reset, 0); + +static IIO_CONST_ATTR(name, "adis16209"); + +static struct attribute *adis16209_event_attributes[] = { + NULL +}; + +static struct attribute_group adis16209_event_attribute_group = { + .attrs = adis16209_event_attributes, +}; + +static struct attribute *adis16209_attributes[] = { + &iio_dev_attr_in_supply_raw.dev_attr.attr, + &iio_const_attr_in_supply_scale.dev_attr.attr, + &iio_dev_attr_temp.dev_attr.attr, + &iio_const_attr_temp_offset.dev_attr.attr, + &iio_const_attr_temp_scale.dev_attr.attr, + &iio_dev_attr_reset.dev_attr.attr, + &iio_const_attr_name.dev_attr.attr, + &iio_dev_attr_in0_raw.dev_attr.attr, + &iio_const_attr_in0_scale.dev_attr.attr, + &iio_dev_attr_accel_x_raw.dev_attr.attr, + &iio_dev_attr_accel_y_raw.dev_attr.attr, + &iio_dev_attr_accel_x_offset.dev_attr.attr, + &iio_dev_attr_accel_y_offset.dev_attr.attr, + &iio_const_attr_accel_scale.dev_attr.attr, + &iio_dev_attr_incli_x_raw.dev_attr.attr, + &iio_dev_attr_incli_y_raw.dev_attr.attr, + &iio_dev_attr_incli_x_offset.dev_attr.attr, + &iio_dev_attr_incli_y_offset.dev_attr.attr, + &iio_const_attr_incli_scale.dev_attr.attr, + &iio_dev_attr_rot_raw.dev_attr.attr, + NULL +}; + +static const struct attribute_group adis16209_attribute_group = { + .attrs = adis16209_attributes, +}; + +static int __devinit adis16209_probe(struct spi_device *spi) +{ + int ret, regdone = 0; + struct adis16209_state *st = kzalloc(sizeof *st, GFP_KERNEL); + if (!st) { + ret = -ENOMEM; + goto error_ret; + } + /* this is only used for removal purposes */ + spi_set_drvdata(spi, st); + + /* Allocate the comms buffers */ + st->rx = kzalloc(sizeof(*st->rx)*ADIS16209_MAX_RX, GFP_KERNEL); + if (st->rx == NULL) { + ret = -ENOMEM; + goto error_free_st; + } + st->tx = kzalloc(sizeof(*st->tx)*ADIS16209_MAX_TX, GFP_KERNEL); + if (st->tx == NULL) { + ret = -ENOMEM; + goto error_free_rx; + } + st->us = spi; + mutex_init(&st->buf_lock); + /* setup the industrialio driver allocated elements */ + st->indio_dev = iio_allocate_device(); + if (st->indio_dev == NULL) { + ret = -ENOMEM; + goto error_free_tx; + } + + st->indio_dev->dev.parent = &spi->dev; + st->indio_dev->num_interrupt_lines = 1; + st->indio_dev->event_attrs = &adis16209_event_attribute_group; + st->indio_dev->attrs = &adis16209_attribute_group; + st->indio_dev->dev_data = (void *)(st); + st->indio_dev->driver_module = THIS_MODULE; + st->indio_dev->modes = INDIO_DIRECT_MODE; + + ret = adis16209_configure_ring(st->indio_dev); + if (ret) + goto error_free_dev; + + ret = iio_device_register(st->indio_dev); + if (ret) + goto error_unreg_ring_funcs; + regdone = 1; + + ret = adis16209_initialize_ring(st->indio_dev->ring); + if (ret) { + printk(KERN_ERR "failed to initialize the ring\n"); + goto error_unreg_ring_funcs; + } + + if (spi->irq) { + ret = iio_register_interrupt_line(spi->irq, + st->indio_dev, + 0, + IRQF_TRIGGER_RISING, + "adis16209"); + if (ret) + goto error_uninitialize_ring; + + ret = adis16209_probe_trigger(st->indio_dev); + if (ret) + goto error_unregister_line; + } + + /* Get the device into a sane initial state */ + ret = adis16209_initial_setup(st); + if (ret) + goto error_remove_trigger; + return 0; + +error_remove_trigger: + adis16209_remove_trigger(st->indio_dev); +error_unregister_line: + if (spi->irq) + iio_unregister_interrupt_line(st->indio_dev, 0); +error_uninitialize_ring: + adis16209_uninitialize_ring(st->indio_dev->ring); +error_unreg_ring_funcs: + adis16209_unconfigure_ring(st->indio_dev); +error_free_dev: + if (regdone) + iio_device_unregister(st->indio_dev); + else + iio_free_device(st->indio_dev); +error_free_tx: + kfree(st->tx); +error_free_rx: + kfree(st->rx); +error_free_st: + kfree(st); +error_ret: + return ret; +} + +static int adis16209_remove(struct spi_device *spi) +{ + struct adis16209_state *st = spi_get_drvdata(spi); + struct iio_dev *indio_dev = st->indio_dev; + + flush_scheduled_work(); + + adis16209_remove_trigger(indio_dev); + if (spi->irq) + iio_unregister_interrupt_line(indio_dev, 0); + + adis16209_uninitialize_ring(indio_dev->ring); + iio_device_unregister(indio_dev); + adis16209_unconfigure_ring(indio_dev); + kfree(st->tx); + kfree(st->rx); + kfree(st); + + return 0; +} + +static struct spi_driver adis16209_driver = { + .driver = { + .name = "adis16209", + .owner = THIS_MODULE, + }, + .probe = adis16209_probe, + .remove = __devexit_p(adis16209_remove), +}; + +static __init int adis16209_init(void) +{ + return spi_register_driver(&adis16209_driver); +} +module_init(adis16209_init); + +static __exit void adis16209_exit(void) +{ + spi_unregister_driver(&adis16209_driver); +} +module_exit(adis16209_exit); + +MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); +MODULE_DESCRIPTION("Analog Devices ADIS16209 Digital Vibration Sensor driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/iio/accel/adis16209_ring.c b/drivers/staging/iio/accel/adis16209_ring.c new file mode 100644 index 000000000000..533e28574910 --- /dev/null +++ b/drivers/staging/iio/accel/adis16209_ring.c @@ -0,0 +1,266 @@ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/gpio.h> +#include <linux/workqueue.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/spi/spi.h> +#include <linux/sysfs.h> +#include <linux/list.h> + +#include "../iio.h" +#include "../sysfs.h" +#include "../ring_sw.h" +#include "accel.h" +#include "../trigger.h" +#include "adis16209.h" + +/** + * combine_8_to_16() utility function to munge to u8s into u16 + **/ +static inline u16 combine_8_to_16(u8 lower, u8 upper) +{ + u16 _lower = lower; + u16 _upper = upper; + return _lower | (_upper << 8); +} + +static IIO_SCAN_EL_C(supply, ADIS16209_SCAN_SUPPLY, IIO_UNSIGNED(14), + ADIS16209_SUPPLY_OUT, NULL); +static IIO_SCAN_EL_C(accel_x, ADIS16209_SCAN_ACC_X, IIO_SIGNED(14), + ADIS16209_XACCL_OUT, NULL); +static IIO_SCAN_EL_C(accel_y, ADIS16209_SCAN_ACC_Y, IIO_SIGNED(14), + ADIS16209_YACCL_OUT, NULL); +static IIO_SCAN_EL_C(aux_adc, ADIS16209_SCAN_AUX_ADC, IIO_UNSIGNED(12), + ADIS16209_AUX_ADC, NULL); +static IIO_SCAN_EL_C(temp, ADIS16209_SCAN_TEMP, IIO_UNSIGNED(12), + ADIS16209_TEMP_OUT, NULL); +static IIO_SCAN_EL_C(incli_x, ADIS16209_SCAN_INCLI_X, IIO_SIGNED(14), + ADIS16209_XINCL_OUT, NULL); +static IIO_SCAN_EL_C(incli_y, ADIS16209_SCAN_INCLI_Y, IIO_SIGNED(14), + ADIS16209_YINCL_OUT, NULL); +static IIO_SCAN_EL_C(rot, ADIS16209_SCAN_ROT, IIO_SIGNED(14), + ADIS16209_ROT_OUT, NULL); + +static IIO_SCAN_EL_TIMESTAMP(8); + +static struct attribute *adis16209_scan_el_attrs[] = { + &iio_scan_el_supply.dev_attr.attr, + &iio_scan_el_accel_x.dev_attr.attr, + &iio_scan_el_accel_y.dev_attr.attr, + &iio_scan_el_aux_adc.dev_attr.attr, + &iio_scan_el_temp.dev_attr.attr, + &iio_scan_el_incli_x.dev_attr.attr, + &iio_scan_el_incli_y.dev_attr.attr, + &iio_scan_el_rot.dev_attr.attr, + &iio_scan_el_timestamp.dev_attr.attr, + NULL, +}; + +static struct attribute_group adis16209_scan_el_group = { + .attrs = adis16209_scan_el_attrs, + .name = "scan_elements", +}; + +/** + * adis16209_poll_func_th() top half interrupt handler called by trigger + * @private_data: iio_dev + **/ +static void adis16209_poll_func_th(struct iio_dev *indio_dev) +{ + struct adis16209_state *st = iio_dev_get_devdata(indio_dev); + st->last_timestamp = indio_dev->trig->timestamp; + schedule_work(&st->work_trigger_to_ring); +} + +/** + * adis16209_read_ring_data() read data registers which will be placed into ring + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @rx: somewhere to pass back the value read + **/ +static int adis16209_read_ring_data(struct device *dev, u8 *rx) +{ + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16209_state *st = iio_dev_get_devdata(indio_dev); + struct spi_transfer xfers[ADIS16209_OUTPUTS + 1]; + int ret; + int i; + + mutex_lock(&st->buf_lock); + + spi_message_init(&msg); + + memset(xfers, 0, sizeof(xfers)); + for (i = 0; i <= ADIS16209_OUTPUTS; i++) { + xfers[i].bits_per_word = 8; + xfers[i].cs_change = 1; + xfers[i].len = 2; + xfers[i].delay_usecs = 20; + xfers[i].tx_buf = st->tx + 2 * i; + st->tx[2 * i] + = ADIS16209_READ_REG(ADIS16209_SUPPLY_OUT + 2 * i); + st->tx[2 * i + 1] = 0; + if (i >= 1) + xfers[i].rx_buf = rx + 2 * (i - 1); + spi_message_add_tail(&xfers[i], &msg); + } + + ret = spi_sync(st->us, &msg); + if (ret) + dev_err(&st->us->dev, "problem when burst reading"); + + mutex_unlock(&st->buf_lock); + + return ret; +} + +/* Whilst this makes a lot of calls to iio_sw_ring functions - it is to device + * specific to be rolled into the core. + */ +static void adis16209_trigger_bh_to_ring(struct work_struct *work_s) +{ + struct adis16209_state *st + = container_of(work_s, struct adis16209_state, + work_trigger_to_ring); + + int i = 0; + s16 *data; + size_t datasize = st->indio_dev + ->ring->access.get_bpd(st->indio_dev->ring); + + data = kmalloc(datasize , GFP_KERNEL); + if (data == NULL) { + dev_err(&st->us->dev, "memory alloc failed in ring bh"); + return; + } + + if (st->indio_dev->scan_count) + if (adis16209_read_ring_data(&st->indio_dev->dev, st->rx) >= 0) + for (; i < st->indio_dev->scan_count; i++) { + data[i] = combine_8_to_16(st->rx[i*2+1], + st->rx[i*2]); + } + + /* Guaranteed to be aligned with 8 byte boundary */ + if (st->indio_dev->scan_timestamp) + *((s64 *)(data + ((i + 3)/4)*4)) = st->last_timestamp; + + st->indio_dev->ring->access.store_to(st->indio_dev->ring, + (u8 *)data, + st->last_timestamp); + + iio_trigger_notify_done(st->indio_dev->trig); + kfree(data); + + return; +} + +/* in these circumstances is it better to go with unaligned packing and + * deal with the cost?*/ +static int adis16209_data_rdy_ring_preenable(struct iio_dev *indio_dev) +{ + size_t size; + dev_dbg(&indio_dev->dev, "%s\n", __func__); + /* Check if there are any scan elements enabled, if not fail*/ + if (!(indio_dev->scan_count || indio_dev->scan_timestamp)) + return -EINVAL; + + if (indio_dev->ring->access.set_bpd) { + if (indio_dev->scan_timestamp) + if (indio_dev->scan_count) + /* Timestamp (aligned to s64) and data */ + size = (((indio_dev->scan_count * sizeof(s16)) + + sizeof(s64) - 1) + & ~(sizeof(s64) - 1)) + + sizeof(s64); + else /* Timestamp only */ + size = sizeof(s64); + else /* Data only */ + size = indio_dev->scan_count*sizeof(s16); + indio_dev->ring->access.set_bpd(indio_dev->ring, size); + } + + return 0; +} + +static int adis16209_data_rdy_ring_postenable(struct iio_dev *indio_dev) +{ + return indio_dev->trig + ? iio_trigger_attach_poll_func(indio_dev->trig, + indio_dev->pollfunc) + : 0; +} + +static int adis16209_data_rdy_ring_predisable(struct iio_dev *indio_dev) +{ + return indio_dev->trig + ? iio_trigger_dettach_poll_func(indio_dev->trig, + indio_dev->pollfunc) + : 0; +} + +void adis16209_unconfigure_ring(struct iio_dev *indio_dev) +{ + kfree(indio_dev->pollfunc); + iio_sw_rb_free(indio_dev->ring); +} + +int adis16209_configure_ring(struct iio_dev *indio_dev) +{ + int ret = 0; + struct adis16209_state *st = indio_dev->dev_data; + struct iio_ring_buffer *ring; + INIT_WORK(&st->work_trigger_to_ring, adis16209_trigger_bh_to_ring); + /* Set default scan mode */ + + iio_scan_mask_set(indio_dev, iio_scan_el_supply.number); + iio_scan_mask_set(indio_dev, iio_scan_el_rot.number); + iio_scan_mask_set(indio_dev, iio_scan_el_accel_x.number); + iio_scan_mask_set(indio_dev, iio_scan_el_accel_y.number); + iio_scan_mask_set(indio_dev, iio_scan_el_temp.number); + iio_scan_mask_set(indio_dev, iio_scan_el_aux_adc.number); + iio_scan_mask_set(indio_dev, iio_scan_el_incli_x.number); + iio_scan_mask_set(indio_dev, iio_scan_el_incli_y.number); + indio_dev->scan_timestamp = true; + + indio_dev->scan_el_attrs = &adis16209_scan_el_group; + + ring = iio_sw_rb_allocate(indio_dev); + if (!ring) { + ret = -ENOMEM; + return ret; + } + indio_dev->ring = ring; + /* Effectively select the ring buffer implementation */ + iio_ring_sw_register_funcs(&ring->access); + ring->preenable = &adis16209_data_rdy_ring_preenable; + ring->postenable = &adis16209_data_rdy_ring_postenable; + ring->predisable = &adis16209_data_rdy_ring_predisable; + ring->owner = THIS_MODULE; + + indio_dev->pollfunc = kzalloc(sizeof(*indio_dev->pollfunc), GFP_KERNEL); + if (indio_dev->pollfunc == NULL) { + ret = -ENOMEM; + goto error_iio_sw_rb_free;; + } + indio_dev->pollfunc->poll_func_main = &adis16209_poll_func_th; + indio_dev->pollfunc->private_data = indio_dev; + indio_dev->modes |= INDIO_RING_TRIGGERED; + return 0; + +error_iio_sw_rb_free: + iio_sw_rb_free(indio_dev->ring); + return ret; +} + +int adis16209_initialize_ring(struct iio_ring_buffer *ring) +{ + return iio_ring_buffer_register(ring, 0); +} + +void adis16209_uninitialize_ring(struct iio_ring_buffer *ring) +{ + iio_ring_buffer_unregister(ring); +} diff --git a/drivers/staging/iio/accel/adis16209_trigger.c b/drivers/staging/iio/accel/adis16209_trigger.c new file mode 100644 index 000000000000..4a0507c9a13b --- /dev/null +++ b/drivers/staging/iio/accel/adis16209_trigger.c @@ -0,0 +1,124 @@ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/sysfs.h> +#include <linux/list.h> +#include <linux/spi/spi.h> + +#include "../iio.h" +#include "../sysfs.h" +#include "../trigger.h" +#include "adis16209.h" + +/** + * adis16209_data_rdy_trig_poll() the event handler for the data rdy trig + **/ +static int adis16209_data_rdy_trig_poll(struct iio_dev *dev_info, + int index, + s64 timestamp, + int no_test) +{ + struct adis16209_state *st = iio_dev_get_devdata(dev_info); + struct iio_trigger *trig = st->trig; + + trig->timestamp = timestamp; + iio_trigger_poll(trig); + + return IRQ_HANDLED; +} + +IIO_EVENT_SH(data_rdy_trig, &adis16209_data_rdy_trig_poll); + +static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL); + +static struct attribute *adis16209_trigger_attrs[] = { + &dev_attr_name.attr, + NULL, +}; + +static const struct attribute_group adis16209_trigger_attr_group = { + .attrs = adis16209_trigger_attrs, +}; + +/** + * adis16209_data_rdy_trigger_set_state() set datardy interrupt state + **/ +static int adis16209_data_rdy_trigger_set_state(struct iio_trigger *trig, + bool state) +{ + struct adis16209_state *st = trig->private_data; + struct iio_dev *indio_dev = st->indio_dev; + int ret = 0; + + dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state); + ret = adis16209_set_irq(&st->indio_dev->dev, state); + if (state == false) { + iio_remove_event_from_list(&iio_event_data_rdy_trig, + &indio_dev->interrupts[0] + ->ev_list); + flush_scheduled_work(); + } else { + iio_add_event_to_list(&iio_event_data_rdy_trig, + &indio_dev->interrupts[0]->ev_list); + } + return ret; +} + +/** + * adis16209_trig_try_reen() try renabling irq for data rdy trigger + * @trig: the datardy trigger + **/ +static int adis16209_trig_try_reen(struct iio_trigger *trig) +{ + struct adis16209_state *st = trig->private_data; + enable_irq(st->us->irq); + return 0; +} + +int adis16209_probe_trigger(struct iio_dev *indio_dev) +{ + int ret; + struct adis16209_state *st = indio_dev->dev_data; + + st->trig = iio_allocate_trigger(); + st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL); + if (!st->trig->name) { + ret = -ENOMEM; + goto error_free_trig; + } + snprintf((char *)st->trig->name, + IIO_TRIGGER_NAME_LENGTH, + "adis16209-dev%d", indio_dev->id); + st->trig->dev.parent = &st->us->dev; + st->trig->owner = THIS_MODULE; + st->trig->private_data = st; + st->trig->set_trigger_state = &adis16209_data_rdy_trigger_set_state; + st->trig->try_reenable = &adis16209_trig_try_reen; + st->trig->control_attrs = &adis16209_trigger_attr_group; + ret = iio_trigger_register(st->trig); + + /* select default trigger */ + indio_dev->trig = st->trig; + if (ret) + goto error_free_trig_name; + + return 0; + +error_free_trig_name: + kfree(st->trig->name); +error_free_trig: + iio_free_trigger(st->trig); + + return ret; +} + +void adis16209_remove_trigger(struct iio_dev *indio_dev) +{ + struct adis16209_state *state = indio_dev->dev_data; + + iio_trigger_unregister(state->trig); + kfree(state->trig->name); + iio_free_trigger(state->trig); +} diff --git a/drivers/staging/iio/accel/adis16220.h b/drivers/staging/iio/accel/adis16220.h new file mode 100644 index 000000000000..2abf4850b373 --- /dev/null +++ b/drivers/staging/iio/accel/adis16220.h @@ -0,0 +1,147 @@ +#ifndef SPI_ADIS16220_H_ +#define SPI_ADIS16220_H_ + +#define ADIS16220_STARTUP_DELAY 220 /* ms */ + +#define ADIS16220_READ_REG(a) a +#define ADIS16220_WRITE_REG(a) ((a) | 0x80) + +/* Flash memory write count */ +#define ADIS16220_FLASH_CNT 0x00 +/* Control, acceleration offset adjustment control */ +#define ADIS16220_ACCL_NULL 0x02 +/* Control, AIN1 offset adjustment control */ +#define ADIS16220_AIN1_NULL 0x04 +/* Control, AIN2 offset adjustment control */ +#define ADIS16220_AIN2_NULL 0x06 +/* Output, power supply during capture */ +#define ADIS16220_CAPT_SUPPLY 0x0A +/* Output, temperature during capture */ +#define ADIS16220_CAPT_TEMP 0x0C +/* Output, peak acceleration during capture */ +#define ADIS16220_CAPT_PEAKA 0x0E +/* Output, peak AIN1 level during capture */ +#define ADIS16220_CAPT_PEAK1 0x10 +/* Output, peak AIN2 level during capture */ +#define ADIS16220_CAPT_PEAK2 0x12 +/* Output, capture buffer for acceleration */ +#define ADIS16220_CAPT_BUFA 0x14 +/* Output, capture buffer for AIN1 */ +#define ADIS16220_CAPT_BUF1 0x16 +/* Output, capture buffer for AIN2 */ +#define ADIS16220_CAPT_BUF2 0x18 +/* Control, capture buffer address pointer */ +#define ADIS16220_CAPT_PNTR 0x1A +/* Control, capture control register */ +#define ADIS16220_CAPT_CTRL 0x1C +/* Control, capture period (automatic mode) */ +#define ADIS16220_CAPT_PRD 0x1E +/* Control, Alarm A, acceleration peak threshold */ +#define ADIS16220_ALM_MAGA 0x20 +/* Control, Alarm 1, AIN1 peak threshold */ +#define ADIS16220_ALM_MAG1 0x22 +/* Control, Alarm 2, AIN2 peak threshold */ +#define ADIS16220_ALM_MAG2 0x24 +/* Control, Alarm S, peak threshold */ +#define ADIS16220_ALM_MAGS 0x26 +/* Control, alarm configuration register */ +#define ADIS16220_ALM_CTRL 0x28 +/* Control, general I/O configuration */ +#define ADIS16220_GPIO_CTRL 0x32 +/* Control, self-test control, AIN configuration */ +#define ADIS16220_MSC_CTRL 0x34 +/* Control, digital I/O configuration */ +#define ADIS16220_DIO_CTRL 0x36 +/* Control, filter configuration */ +#define ADIS16220_AVG_CNT 0x38 +/* Status, system status */ +#define ADIS16220_DIAG_STAT 0x3C +/* Control, system commands */ +#define ADIS16220_GLOB_CMD 0x3E +/* Status, self-test response */ +#define ADIS16220_ST_DELTA 0x40 +/* Lot Identification Code 1 */ +#define ADIS16220_LOT_ID1 0x52 +/* Lot Identification Code 2 */ +#define ADIS16220_LOT_ID2 0x54 +/* Product identifier; convert to decimal = 16220 */ +#define ADIS16220_PROD_ID 0x56 +/* Serial number */ +#define ADIS16220_SERIAL_NUM 0x58 + +#define ADIS16220_CAPTURE_SIZE 2048 + +/* MSC_CTRL */ +#define ADIS16220_MSC_CTRL_SELF_TEST_EN (1 << 8) +#define ADIS16220_MSC_CTRL_POWER_SUP_COM_AIN1 (1 << 1) +#define ADIS16220_MSC_CTRL_POWER_SUP_COM_AIN2 (1 << 0) + +/* DIO_CTRL */ +#define ADIS16220_MSC_CTRL_DIO2_BUSY_IND (3<<4) +#define ADIS16220_MSC_CTRL_DIO1_BUSY_IND (3<<2) +#define ADIS16220_MSC_CTRL_DIO2_ACT_HIGH (1<<1) +#define ADIS16220_MSC_CTRL_DIO1_ACT_HIGH (1<<0) + +/* DIAG_STAT */ +/* AIN2 sample > ALM_MAG2 */ +#define ADIS16220_DIAG_STAT_ALM_MAG2 (1<<14) +/* AIN1 sample > ALM_MAG1 */ +#define ADIS16220_DIAG_STAT_ALM_MAG1 (1<<13) +/* Acceleration sample > ALM_MAGA */ +#define ADIS16220_DIAG_STAT_ALM_MAGA (1<<12) +/* Error condition programmed into ALM_MAGS[11:0] and ALM_CTRL[5:4] is true */ +#define ADIS16220_DIAG_STAT_ALM_MAGS (1<<11) +/* |Peak value in AIN2 data capture| > ALM_MAG2 */ +#define ADIS16220_DIAG_STAT_PEAK_AIN2 (1<<10) +/* |Peak value in AIN1 data capture| > ALM_MAG1 */ +#define ADIS16220_DIAG_STAT_PEAK_AIN1 (1<<9) +/* |Peak value in acceleration data capture| > ALM_MAGA */ +#define ADIS16220_DIAG_STAT_PEAK_ACCEL (1<<8) +/* Data ready, capture complete */ +#define ADIS16220_DIAG_STAT_DATA_RDY (1<<7) +#define ADIS16220_DIAG_STAT_FLASH_CHK (1<<6) +#define ADIS16220_DIAG_STAT_SELF_TEST (1<<5) +/* Capture period violation/interruption */ +#define ADIS16220_DIAG_STAT_VIOLATION (1<<4) +/* SPI communications failure */ +#define ADIS16220_DIAG_STAT_SPI_FAIL (1<<3) +/* Flash update failure */ +#define ADIS16220_DIAG_STAT_FLASH_UPT (1<<2) +/* Power supply above 3.625 V */ +#define ADIS16220_DIAG_STAT_POWER_HIGH (1<<1) +/* Power supply below 3.15 V */ +#define ADIS16220_DIAG_STAT_POWER_LOW (1<<0) + +/* GLOB_CMD */ +#define ADIS16220_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16220_GLOB_CMD_SELF_TEST (1<<2) +#define ADIS16220_GLOB_CMD_PWR_DOWN (1<<1) + +#define ADIS16220_MAX_TX 2048 +#define ADIS16220_MAX_RX 2048 + +#define ADIS16220_SPI_BURST (u32)(1000 * 1000) +#define ADIS16220_SPI_FAST (u32)(2000 * 1000) + +/** + * struct adis16220_state - device instance specific data + * @us: actual spi_device + * @work_trigger_to_ring: bh for triggered event handling + * @work_cont_thresh: CLEAN + * @inter: used to check if new interrupt has been triggered + * @last_timestamp: passing timestamp from th to bh of interrupt handler + * @indio_dev: industrial I/O device structure + * @trig: data ready trigger registered with iio + * @tx: transmit buffer + * @rx: recieve buffer + * @buf_lock: mutex to protect tx and rx + **/ +struct adis16220_state { + struct spi_device *us; + struct iio_dev *indio_dev; + u8 *tx; + u8 *rx; + struct mutex buf_lock; +}; + +#endif /* SPI_ADIS16220_H_ */ diff --git a/drivers/staging/iio/accel/adis16220_core.c b/drivers/staging/iio/accel/adis16220_core.c new file mode 100644 index 000000000000..6de439fd1675 --- /dev/null +++ b/drivers/staging/iio/accel/adis16220_core.c @@ -0,0 +1,670 @@ +/* + * ADIS16220 Programmable Digital Vibration Sensor driver + * + * Copyright 2010 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/gpio.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/spi/spi.h> + +#include <linux/sysfs.h> +#include <linux/list.h> + +#include "../iio.h" +#include "../sysfs.h" +#include "accel.h" +#include "../adc/adc.h" + +#include "adis16220.h" + +#define DRIVER_NAME "adis16220" + +/** + * adis16220_spi_write_reg_8() - write single byte to a register + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the register to be written + * @val: the value to write + **/ +static int adis16220_spi_write_reg_8(struct device *dev, + u8 reg_address, + u8 val) +{ + int ret; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16220_state *st = iio_dev_get_devdata(indio_dev); + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16220_WRITE_REG(reg_address); + st->tx[1] = val; + + ret = spi_write(st->us, st->tx, 2); + mutex_unlock(&st->buf_lock); + + return ret; +} + +/** + * adis16220_spi_write_reg_16() - write 2 bytes to a pair of registers + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the lower of the two registers. Second register + * is assumed to have address one greater. + * @val: value to be written + **/ +static int adis16220_spi_write_reg_16(struct device *dev, + u8 lower_reg_address, + u16 value) +{ + int ret; + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16220_state *st = iio_dev_get_devdata(indio_dev); + struct spi_transfer xfers[] = { + { + .tx_buf = st->tx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, { + .tx_buf = st->tx + 2, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, + }; + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16220_WRITE_REG(lower_reg_address); + st->tx[1] = value & 0xFF; + st->tx[2] = ADIS16220_WRITE_REG(lower_reg_address + 1); + st->tx[3] = (value >> 8) & 0xFF; + + spi_message_init(&msg); + spi_message_add_tail(&xfers[0], &msg); + spi_message_add_tail(&xfers[1], &msg); + ret = spi_sync(st->us, &msg); + mutex_unlock(&st->buf_lock); + + return ret; +} + +/** + * adis16220_spi_read_reg_16() - read 2 bytes from a 16-bit register + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the lower of the two registers. Second register + * is assumed to have address one greater. + * @val: somewhere to pass back the value read + **/ +static int adis16220_spi_read_reg_16(struct device *dev, + u8 lower_reg_address, + u16 *val) +{ + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16220_state *st = iio_dev_get_devdata(indio_dev); + int ret; + struct spi_transfer xfers[] = { + { + .tx_buf = st->tx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, { + .rx_buf = st->rx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, + }; + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16220_READ_REG(lower_reg_address); + st->tx[1] = 0; + + spi_message_init(&msg); + spi_message_add_tail(&xfers[0], &msg); + spi_message_add_tail(&xfers[1], &msg); + ret = spi_sync(st->us, &msg); + if (ret) { + dev_err(&st->us->dev, + "problem when reading 16 bit register 0x%02X", + lower_reg_address); + goto error_ret; + } + *val = (st->rx[0] << 8) | st->rx[1]; + +error_ret: + mutex_unlock(&st->buf_lock); + return ret; +} + +static ssize_t adis16220_spi_read_signed(struct device *dev, + struct device_attribute *attr, + char *buf, + unsigned bits) +{ + int ret; + s16 val = 0; + unsigned shift = 16 - bits; + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + + ret = adis16220_spi_read_reg_16(dev, this_attr->address, (u16 *)&val); + if (ret) + return ret; + + val = ((s16)(val << shift) >> shift); + return sprintf(buf, "%d\n", val); +} + +static ssize_t adis16220_read_12bit_unsigned(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret; + u16 val = 0; + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + + ret = adis16220_spi_read_reg_16(dev, this_attr->address, &val); + if (ret) + return ret; + + return sprintf(buf, "%u\n", val & 0x0FFF); +} + +static ssize_t adis16220_read_16bit(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + ssize_t ret; + + /* Take the iio_dev status lock */ + mutex_lock(&indio_dev->mlock); + ret = adis16220_spi_read_signed(dev, attr, buf, 16); + mutex_unlock(&indio_dev->mlock); + + return ret; +} + +static ssize_t adis16220_write_16bit(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t len) +{ + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + int ret; + long val; + + ret = strict_strtol(buf, 10, &val); + if (ret) + goto error_ret; + ret = adis16220_spi_write_reg_16(dev, this_attr->address, val); + +error_ret: + return ret ? ret : len; +} + +static int adis16220_capture(struct device *dev) +{ + int ret; + ret = adis16220_spi_write_reg_16(dev, + ADIS16220_GLOB_CMD, + 0xBF08); /* initiates a manual data capture */ + if (ret) + dev_err(dev, "problem beginning capture"); + + msleep(10); /* delay for capture to finish */ + + return ret; +} + +static int adis16220_reset(struct device *dev) +{ + int ret; + ret = adis16220_spi_write_reg_8(dev, + ADIS16220_GLOB_CMD, + ADIS16220_GLOB_CMD_SW_RESET); + if (ret) + dev_err(dev, "problem resetting device"); + + return ret; +} + +static ssize_t adis16220_write_reset(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + if (len < 1) + return -1; + switch (buf[0]) { + case '1': + case 'y': + case 'Y': + return adis16220_reset(dev) == 0 ? len : -EIO; + } + return -1; +} + +static ssize_t adis16220_write_capture(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + if (len < 1) + return -1; + switch (buf[0]) { + case '1': + case 'y': + case 'Y': + return adis16220_capture(dev) == 0 ? len : -EIO; + } + return -1; +} + +static int adis16220_check_status(struct device *dev) +{ + u16 status; + int ret; + + ret = adis16220_spi_read_reg_16(dev, ADIS16220_DIAG_STAT, &status); + + if (ret < 0) { + dev_err(dev, "Reading status failed\n"); + goto error_ret; + } + ret = status & 0x7F; + + if (status & ADIS16220_DIAG_STAT_VIOLATION) + dev_err(dev, "Capture period violation/interruption\n"); + if (status & ADIS16220_DIAG_STAT_SPI_FAIL) + dev_err(dev, "SPI failure\n"); + if (status & ADIS16220_DIAG_STAT_FLASH_UPT) + dev_err(dev, "Flash update failed\n"); + if (status & ADIS16220_DIAG_STAT_POWER_HIGH) + dev_err(dev, "Power supply above 5.25V\n"); + if (status & ADIS16220_DIAG_STAT_POWER_LOW) + dev_err(dev, "Power supply below 4.75V\n"); + +error_ret: + return ret; +} + +static int adis16220_self_test(struct device *dev) +{ + int ret; + ret = adis16220_spi_write_reg_16(dev, + ADIS16220_MSC_CTRL, + ADIS16220_MSC_CTRL_SELF_TEST_EN); + if (ret) { + dev_err(dev, "problem starting self test"); + goto err_ret; + } + + adis16220_check_status(dev); + +err_ret: + return ret; +} + +static int adis16220_initial_setup(struct adis16220_state *st) +{ + int ret; + struct device *dev = &st->indio_dev->dev; + + /* Do self test */ + ret = adis16220_self_test(dev); + if (ret) { + dev_err(dev, "self test failure"); + goto err_ret; + } + + /* Read status register to check the result */ + ret = adis16220_check_status(dev); + if (ret) { + adis16220_reset(dev); + dev_err(dev, "device not playing ball -> reset"); + msleep(ADIS16220_STARTUP_DELAY); + ret = adis16220_check_status(dev); + if (ret) { + dev_err(dev, "giving up"); + goto err_ret; + } + } + + printk(KERN_INFO DRIVER_NAME ": at CS%d (irq %d)\n", + st->us->chip_select, st->us->irq); + +err_ret: + return ret; +} + +static ssize_t adis16220_capture_buffer_read(struct adis16220_state *st, + char *buf, + loff_t off, + size_t count, + int addr) +{ + struct spi_message msg; + struct spi_transfer xfers[] = { + { + .tx_buf = st->tx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, { + .tx_buf = st->tx, + .rx_buf = st->rx, + .bits_per_word = 8, + .cs_change = 1, + .delay_usecs = 25, + }, + }; + int ret; + int i; + + if (unlikely(!count)) + return count; + + if ((off >= ADIS16220_CAPTURE_SIZE) || (count & 1) || (off & 1)) + return -EINVAL; + + if (off + count > ADIS16220_CAPTURE_SIZE) + count = ADIS16220_CAPTURE_SIZE - off; + + /* write the begin position of capture buffer */ + ret = adis16220_spi_write_reg_16(&st->indio_dev->dev, + ADIS16220_CAPT_PNTR, + off > 1); + if (ret) + return -EIO; + + /* read count/2 values from capture buffer */ + mutex_lock(&st->buf_lock); + + for (i = 0; i < count; i += 2) { + st->tx[i] = ADIS16220_READ_REG(addr); + st->tx[i + 1] = 0; + } + xfers[1].len = count; + + spi_message_init(&msg); + spi_message_add_tail(&xfers[0], &msg); + spi_message_add_tail(&xfers[1], &msg); + ret = spi_sync(st->us, &msg); + if (ret) { + + mutex_unlock(&st->buf_lock); + return -EIO; + } + + memcpy(buf, st->rx, count); + + mutex_unlock(&st->buf_lock); + return count; +} + +static ssize_t adis16220_accel_bin_read(struct kobject *kobj, + struct bin_attribute *attr, + char *buf, + loff_t off, + size_t count) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16220_state *st = iio_dev_get_devdata(indio_dev); + + return adis16220_capture_buffer_read(st, buf, + off, count, + ADIS16220_CAPT_BUFA); +} + +static struct bin_attribute accel_bin = { + .attr = { + .name = "accel_bin", + .mode = S_IRUGO, + }, + .read = adis16220_accel_bin_read, + .size = ADIS16220_CAPTURE_SIZE, +}; + +static ssize_t adis16220_adc1_bin_read(struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, + size_t count) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16220_state *st = iio_dev_get_devdata(indio_dev); + + return adis16220_capture_buffer_read(st, buf, + off, count, + ADIS16220_CAPT_BUF1); +} + +static struct bin_attribute adc1_bin = { + .attr = { + .name = "in0_bin", + .mode = S_IRUGO, + }, + .read = adis16220_adc1_bin_read, + .size = ADIS16220_CAPTURE_SIZE, +}; + +static ssize_t adis16220_adc2_bin_read(struct kobject *kobj, + struct bin_attribute *attr, + char *buf, loff_t off, + size_t count) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16220_state *st = iio_dev_get_devdata(indio_dev); + + return adis16220_capture_buffer_read(st, buf, + off, count, + ADIS16220_CAPT_BUF2); +} + + +static struct bin_attribute adc2_bin = { + .attr = { + .name = "in1_bin", + .mode = S_IRUGO, + }, + .read = adis16220_adc2_bin_read, + .size = ADIS16220_CAPTURE_SIZE, +}; + +static IIO_DEV_ATTR_IN_NAMED_RAW(supply, adis16220_read_12bit_unsigned, + ADIS16220_CAPT_SUPPLY); +static IIO_CONST_ATTR(in_supply_scale, "0.0012207"); +static IIO_DEV_ATTR_ACCEL(adis16220_read_16bit, ADIS16220_CAPT_BUFA); +static IIO_DEVICE_ATTR(accel_peak_raw, S_IRUGO, adis16220_read_16bit, + NULL, ADIS16220_CAPT_PEAKA); +static IIO_DEV_ATTR_ACCEL_OFFSET(S_IWUSR | S_IRUGO, + adis16220_read_16bit, + adis16220_write_16bit, + ADIS16220_ACCL_NULL); +static IIO_DEV_ATTR_TEMP_RAW(adis16220_read_12bit_unsigned); +static IIO_CONST_ATTR(temp_offset, "25"); +static IIO_CONST_ATTR(temp_scale, "-0.47"); + +static IIO_DEV_ATTR_IN_RAW(0, adis16220_read_16bit, ADIS16220_CAPT_BUF1); +static IIO_DEV_ATTR_IN_RAW(1, adis16220_read_16bit, ADIS16220_CAPT_BUF2); + +static IIO_DEVICE_ATTR(reset, S_IWUSR, NULL, + adis16220_write_reset, 0); + +#define IIO_DEV_ATTR_CAPTURE(_store) \ + IIO_DEVICE_ATTR(capture, S_IWUGO, NULL, _store, 0) + +static IIO_DEV_ATTR_CAPTURE(adis16220_write_capture); + +#define IIO_DEV_ATTR_CAPTURE_COUNT(_mode, _show, _store, _addr) \ + IIO_DEVICE_ATTR(capture_count, _mode, _show, _store, _addr) + +static IIO_DEV_ATTR_CAPTURE_COUNT(S_IWUSR | S_IRUGO, + adis16220_read_16bit, + adis16220_write_16bit, + ADIS16220_CAPT_PNTR); + +static IIO_CONST_ATTR_AVAIL_SAMP_FREQ("100200"); + +static IIO_CONST_ATTR(name, "adis16220"); + +static struct attribute *adis16220_attributes[] = { + &iio_dev_attr_in_supply_raw.dev_attr.attr, + &iio_const_attr_in_supply_scale.dev_attr.attr, + &iio_dev_attr_accel_raw.dev_attr.attr, + &iio_dev_attr_accel_offset.dev_attr.attr, + &iio_dev_attr_accel_peak_raw.dev_attr.attr, + &iio_dev_attr_temp_raw.dev_attr.attr, + &iio_dev_attr_in0_raw.dev_attr.attr, + &iio_dev_attr_in1_raw.dev_attr.attr, + &iio_const_attr_temp_offset.dev_attr.attr, + &iio_const_attr_temp_scale.dev_attr.attr, + &iio_const_attr_available_sampling_frequency.dev_attr.attr, + &iio_dev_attr_reset.dev_attr.attr, + &iio_dev_attr_capture.dev_attr.attr, + &iio_dev_attr_capture_count.dev_attr.attr, + &iio_const_attr_name.dev_attr.attr, + NULL +}; + +static const struct attribute_group adis16220_attribute_group = { + .attrs = adis16220_attributes, +}; + +static int __devinit adis16220_probe(struct spi_device *spi) +{ + int ret, regdone = 0; + struct adis16220_state *st = kzalloc(sizeof *st, GFP_KERNEL); + if (!st) { + ret = -ENOMEM; + goto error_ret; + } + /* this is only used for removal purposes */ + spi_set_drvdata(spi, st); + + /* Allocate the comms buffers */ + st->rx = kzalloc(sizeof(*st->rx)*ADIS16220_MAX_RX, GFP_KERNEL); + if (st->rx == NULL) { + ret = -ENOMEM; + goto error_free_st; + } + st->tx = kzalloc(sizeof(*st->tx)*ADIS16220_MAX_TX, GFP_KERNEL); + if (st->tx == NULL) { + ret = -ENOMEM; + goto error_free_rx; + } + st->us = spi; + mutex_init(&st->buf_lock); + /* setup the industrialio driver allocated elements */ + st->indio_dev = iio_allocate_device(); + if (st->indio_dev == NULL) { + ret = -ENOMEM; + goto error_free_tx; + } + + st->indio_dev->dev.parent = &spi->dev; + st->indio_dev->attrs = &adis16220_attribute_group; + st->indio_dev->dev_data = (void *)(st); + st->indio_dev->driver_module = THIS_MODULE; + st->indio_dev->modes = INDIO_DIRECT_MODE; + + ret = iio_device_register(st->indio_dev); + if (ret) + goto error_free_dev; + regdone = 1; + + ret = sysfs_create_bin_file(&st->indio_dev->dev.kobj, &accel_bin); + if (ret) + goto error_free_dev; + + ret = sysfs_create_bin_file(&st->indio_dev->dev.kobj, &adc1_bin); + if (ret) + goto error_rm_accel_bin; + + ret = sysfs_create_bin_file(&st->indio_dev->dev.kobj, &adc2_bin); + if (ret) + goto error_rm_adc1_bin; + + /* Get the device into a sane initial state */ + ret = adis16220_initial_setup(st); + if (ret) + goto error_rm_adc2_bin; + return 0; + +error_rm_adc2_bin: + sysfs_remove_bin_file(&st->indio_dev->dev.kobj, &adc2_bin); +error_rm_adc1_bin: + sysfs_remove_bin_file(&st->indio_dev->dev.kobj, &adc1_bin); +error_rm_accel_bin: + sysfs_remove_bin_file(&st->indio_dev->dev.kobj, &accel_bin); +error_free_dev: + if (regdone) + iio_device_unregister(st->indio_dev); + else + iio_free_device(st->indio_dev); +error_free_tx: + kfree(st->tx); +error_free_rx: + kfree(st->rx); +error_free_st: + kfree(st); +error_ret: + return ret; +} + +static int adis16220_remove(struct spi_device *spi) +{ + struct adis16220_state *st = spi_get_drvdata(spi); + struct iio_dev *indio_dev = st->indio_dev; + + flush_scheduled_work(); + + sysfs_remove_bin_file(&st->indio_dev->dev.kobj, &adc2_bin); + sysfs_remove_bin_file(&st->indio_dev->dev.kobj, &adc1_bin); + sysfs_remove_bin_file(&st->indio_dev->dev.kobj, &accel_bin); + iio_device_unregister(indio_dev); + kfree(st->tx); + kfree(st->rx); + kfree(st); + + return 0; +} + +static struct spi_driver adis16220_driver = { + .driver = { + .name = "adis16220", + .owner = THIS_MODULE, + }, + .probe = adis16220_probe, + .remove = __devexit_p(adis16220_remove), +}; + +static __init int adis16220_init(void) +{ + return spi_register_driver(&adis16220_driver); +} +module_init(adis16220_init); + +static __exit void adis16220_exit(void) +{ + spi_unregister_driver(&adis16220_driver); +} +module_exit(adis16220_exit); + +MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); +MODULE_DESCRIPTION("Analog Devices ADIS16220 Digital Vibration Sensor"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/iio/accel/adis16240.h b/drivers/staging/iio/accel/adis16240.h new file mode 100644 index 000000000000..dcff43c75235 --- /dev/null +++ b/drivers/staging/iio/accel/adis16240.h @@ -0,0 +1,218 @@ +#ifndef SPI_ADIS16240_H_ +#define SPI_ADIS16240_H_ + +#define ADIS16240_STARTUP_DELAY 220 /* ms */ + +#define ADIS16240_READ_REG(a) a +#define ADIS16240_WRITE_REG(a) ((a) | 0x80) + +/* Flash memory write count */ +#define ADIS16240_FLASH_CNT 0x00 +/* Output, power supply */ +#define ADIS16240_SUPPLY_OUT 0x02 +/* Output, x-axis accelerometer */ +#define ADIS16240_XACCL_OUT 0x04 +/* Output, y-axis accelerometer */ +#define ADIS16240_YACCL_OUT 0x06 +/* Output, z-axis accelerometer */ +#define ADIS16240_ZACCL_OUT 0x08 +/* Output, auxiliary ADC input */ +#define ADIS16240_AUX_ADC 0x0A +/* Output, temperature */ +#define ADIS16240_TEMP_OUT 0x0C +/* Output, x-axis acceleration peak */ +#define ADIS16240_XPEAK_OUT 0x0E +/* Output, y-axis acceleration peak */ +#define ADIS16240_YPEAK_OUT 0x10 +/* Output, z-axis acceleration peak */ +#define ADIS16240_ZPEAK_OUT 0x12 +/* Output, sum-of-squares acceleration peak */ +#define ADIS16240_XYZPEAK_OUT 0x14 +/* Output, Capture Buffer 1, X and Y acceleration */ +#define ADIS16240_CAPT_BUF1 0x16 +/* Output, Capture Buffer 2, Z acceleration */ +#define ADIS16240_CAPT_BUF2 0x18 +/* Diagnostic, error flags */ +#define ADIS16240_DIAG_STAT 0x1A +/* Diagnostic, event counter */ +#define ADIS16240_EVNT_CNTR 0x1C +/* Diagnostic, check sum value from firmware test */ +#define ADIS16240_CHK_SUM 0x1E +/* Calibration, x-axis acceleration offset adjustment */ +#define ADIS16240_XACCL_OFF 0x20 +/* Calibration, y-axis acceleration offset adjustment */ +#define ADIS16240_YACCL_OFF 0x22 +/* Calibration, z-axis acceleration offset adjustment */ +#define ADIS16240_ZACCL_OFF 0x24 +/* Clock, hour and minute */ +#define ADIS16240_CLK_TIME 0x2E +/* Clock, month and day */ +#define ADIS16240_CLK_DATE 0x30 +/* Clock, year */ +#define ADIS16240_CLK_YEAR 0x32 +/* Wake-up setting, hour and minute */ +#define ADIS16240_WAKE_TIME 0x34 +/* Wake-up setting, month and day */ +#define ADIS16240_WAKE_DATE 0x36 +/* Alarm 1 amplitude threshold */ +#define ADIS16240_ALM_MAG1 0x38 +/* Alarm 2 amplitude threshold */ +#define ADIS16240_ALM_MAG2 0x3A +/* Alarm control */ +#define ADIS16240_ALM_CTRL 0x3C +/* Capture, external trigger control */ +#define ADIS16240_XTRIG_CTRL 0x3E +/* Capture, address pointer */ +#define ADIS16240_CAPT_PNTR 0x40 +/* Capture, configuration and control */ +#define ADIS16240_CAPT_CTRL 0x42 +/* General-purpose digital input/output control */ +#define ADIS16240_GPIO_CTRL 0x44 +/* Miscellaneous control */ +#define ADIS16240_MSC_CTRL 0x46 +/* Internal sample period (rate) control */ +#define ADIS16240_SMPL_PRD 0x48 +/* System command */ +#define ADIS16240_GLOB_CMD 0x4A + +#define ADIS16240_OUTPUTS 6 + +/* MSC_CTRL */ +/* Enables sum-of-squares output (XYZPEAK_OUT) */ +#define ADIS16240_MSC_CTRL_XYZPEAK_OUT_EN (1 << 15) +/* Enables peak tracking output (XPEAK_OUT, YPEAK_OUT, and ZPEAK_OUT) */ +#define ADIS16240_MSC_CTRL_X_Y_ZPEAK_OUT_EN (1 << 14) +/* Self-test enable: 1 = apply electrostatic force, 0 = disabled */ +#define ADIS16240_MSC_CTRL_SELF_TEST_EN (1 << 8) +/* Data-ready enable: 1 = enabled, 0 = disabled */ +#define ADIS16240_MSC_CTRL_DATA_RDY_EN (1 << 2) +/* Data-ready polarity: 1 = active high, 0 = active low */ +#define ADIS16240_MSC_CTRL_ACTIVE_HIGH (1 << 1) +/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */ +#define ADIS16240_MSC_CTRL_DATA_RDY_DIO2 (1 << 0) + +/* DIAG_STAT */ +/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16240_DIAG_STAT_ALARM2 (1<<9) +/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */ +#define ADIS16240_DIAG_STAT_ALARM1 (1<<8) +/* Capture buffer full: 1 = capture buffer is full */ +#define ADIS16240_DIAG_STAT_CPT_BUF_FUL (1<<7) +/* Flash test, checksum flag: 1 = mismatch, 0 = match */ +#define ADIS16240_DIAG_STAT_CHKSUM (1<<6) +/* Power-on, self-test flag: 1 = failure, 0 = pass */ +#define ADIS16240_DIAG_STAT_PWRON_FAIL (1<<5) +/* Power-on self-test: 1 = in-progress, 0 = complete */ +#define ADIS16240_DIAG_STAT_PWRON_BUSY (1<<4) +/* SPI communications failure */ +#define ADIS16240_DIAG_STAT_SPI_FAIL (1<<3) +/* Flash update failure */ +#define ADIS16240_DIAG_STAT_FLASH_UPT (1<<2) +/* Power supply above 3.625 V */ +#define ADIS16240_DIAG_STAT_POWER_HIGH (1<<1) + /* Power supply below 3.15 V */ +#define ADIS16240_DIAG_STAT_POWER_LOW (1<<0) + +/* GLOB_CMD */ +#define ADIS16240_GLOB_CMD_RESUME (1<<8) +#define ADIS16240_GLOB_CMD_SW_RESET (1<<7) +#define ADIS16240_GLOB_CMD_STANDBY (1<<2) + +#define ADIS16240_ERROR_ACTIVE (1<<14) + +#define ADIS16240_MAX_TX 24 +#define ADIS16240_MAX_RX 24 + +/** + * struct adis16240_state - device instance specific data + * @us: actual spi_device + * @work_trigger_to_ring: bh for triggered event handling + * @work_cont_thresh: CLEAN + * @inter: used to check if new interrupt has been triggered + * @last_timestamp: passing timestamp from th to bh of interrupt handler + * @indio_dev: industrial I/O device structure + * @trig: data ready trigger registered with iio + * @tx: transmit buffer + * @rx: recieve buffer + * @buf_lock: mutex to protect tx and rx + **/ +struct adis16240_state { + struct spi_device *us; + struct work_struct work_trigger_to_ring; + struct iio_work_cont work_cont_thresh; + s64 last_timestamp; + struct iio_dev *indio_dev; + struct iio_trigger *trig; + u8 *tx; + u8 *rx; + struct mutex buf_lock; +}; + +int adis16240_set_irq(struct device *dev, bool enable); + +#ifdef CONFIG_IIO_RING_BUFFER +/* At the moment triggers are only used for ring buffer + * filling. This may change! + */ + +enum adis16240_scan { + ADIS16240_SCAN_SUPPLY, + ADIS16240_SCAN_ACC_X, + ADIS16240_SCAN_ACC_Y, + ADIS16240_SCAN_ACC_Z, + ADIS16240_SCAN_AUX_ADC, + ADIS16240_SCAN_TEMP, +}; + +void adis16240_remove_trigger(struct iio_dev *indio_dev); +int adis16240_probe_trigger(struct iio_dev *indio_dev); + +ssize_t adis16240_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf); + + +int adis16240_configure_ring(struct iio_dev *indio_dev); +void adis16240_unconfigure_ring(struct iio_dev *indio_dev); + +int adis16240_initialize_ring(struct iio_ring_buffer *ring); +void adis16240_uninitialize_ring(struct iio_ring_buffer *ring); +#else /* CONFIG_IIO_RING_BUFFER */ + +static inline void adis16240_remove_trigger(struct iio_dev *indio_dev) +{ +} + +static inline int adis16240_probe_trigger(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline ssize_t +adis16240_read_data_from_ring(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + return 0; +} + +static int adis16240_configure_ring(struct iio_dev *indio_dev) +{ + return 0; +} + +static inline void adis16240_unconfigure_ring(struct iio_dev *indio_dev) +{ +} + +static inline int adis16240_initialize_ring(struct iio_ring_buffer *ring) +{ + return 0; +} + +static inline void adis16240_uninitialize_ring(struct iio_ring_buffer *ring) +{ +} + +#endif /* CONFIG_IIO_RING_BUFFER */ +#endif /* SPI_ADIS16240_H_ */ diff --git a/drivers/staging/iio/accel/adis16240_core.c b/drivers/staging/iio/accel/adis16240_core.c new file mode 100644 index 000000000000..54fd6d77412f --- /dev/null +++ b/drivers/staging/iio/accel/adis16240_core.c @@ -0,0 +1,599 @@ +/* + * ADIS16240 Programmable Impact Sensor and Recorder driver + * + * Copyright 2010 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/gpio.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/spi/spi.h> + +#include <linux/sysfs.h> +#include <linux/list.h> + +#include "../iio.h" +#include "../sysfs.h" +#include "accel.h" +#include "../adc/adc.h" + +#include "adis16240.h" + +#define DRIVER_NAME "adis16240" + +static int adis16240_check_status(struct device *dev); + +/** + * adis16240_spi_write_reg_8() - write single byte to a register + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the register to be written + * @val: the value to write + **/ +static int adis16240_spi_write_reg_8(struct device *dev, + u8 reg_address, + u8 val) +{ + int ret; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16240_state *st = iio_dev_get_devdata(indio_dev); + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16240_WRITE_REG(reg_address); + st->tx[1] = val; + + ret = spi_write(st->us, st->tx, 2); + mutex_unlock(&st->buf_lock); + + return ret; +} + +/** + * adis16240_spi_write_reg_16() - write 2 bytes to a pair of registers + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the lower of the two registers. Second register + * is assumed to have address one greater. + * @val: value to be written + **/ +static int adis16240_spi_write_reg_16(struct device *dev, + u8 lower_reg_address, + u16 value) +{ + int ret; + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16240_state *st = iio_dev_get_devdata(indio_dev); + struct spi_transfer xfers[] = { + { + .tx_buf = st->tx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, { + .tx_buf = st->tx + 2, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, + }; + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16240_WRITE_REG(lower_reg_address); + st->tx[1] = value & 0xFF; + st->tx[2] = ADIS16240_WRITE_REG(lower_reg_address + 1); + st->tx[3] = (value >> 8) & 0xFF; + + spi_message_init(&msg); + spi_message_add_tail(&xfers[0], &msg); + spi_message_add_tail(&xfers[1], &msg); + ret = spi_sync(st->us, &msg); + mutex_unlock(&st->buf_lock); + + return ret; +} + +/** + * adis16240_spi_read_reg_16() - read 2 bytes from a 16-bit register + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @reg_address: the address of the lower of the two registers. Second register + * is assumed to have address one greater. + * @val: somewhere to pass back the value read + **/ +static int adis16240_spi_read_reg_16(struct device *dev, + u8 lower_reg_address, + u16 *val) +{ + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16240_state *st = iio_dev_get_devdata(indio_dev); + int ret; + struct spi_transfer xfers[] = { + { + .tx_buf = st->tx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, { + .rx_buf = st->rx, + .bits_per_word = 8, + .len = 2, + .cs_change = 1, + .delay_usecs = 25, + }, + }; + + mutex_lock(&st->buf_lock); + st->tx[0] = ADIS16240_READ_REG(lower_reg_address); + st->tx[1] = 0; + st->tx[2] = 0; + st->tx[3] = 0; + + spi_message_init(&msg); + spi_message_add_tail(&xfers[0], &msg); + spi_message_add_tail(&xfers[1], &msg); + ret = spi_sync(st->us, &msg); + if (ret) { + dev_err(&st->us->dev, + "problem when reading 16 bit register 0x%02X", + lower_reg_address); + goto error_ret; + } + *val = (st->rx[0] << 8) | st->rx[1]; + +error_ret: + mutex_unlock(&st->buf_lock); + return ret; +} + +static ssize_t adis16240_spi_read_signed(struct device *dev, + struct device_attribute *attr, + char *buf, + unsigned bits) +{ + int ret; + s16 val = 0; + unsigned shift = 16 - bits; + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + + ret = adis16240_spi_read_reg_16(dev, this_attr->address, (u16 *)&val); + if (ret) + return ret; + + if (val & ADIS16240_ERROR_ACTIVE) + adis16240_check_status(dev); + + val = ((s16)(val << shift) >> shift); + return sprintf(buf, "%d\n", val); +} + +static ssize_t adis16240_read_10bit_unsigned(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + int ret; + u16 val = 0; + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + + ret = adis16240_spi_read_reg_16(dev, this_attr->address, &val); + if (ret) + return ret; + + if (val & ADIS16240_ERROR_ACTIVE) + adis16240_check_status(dev); + + return sprintf(buf, "%u\n", val & 0x03FF); +} + +static ssize_t adis16240_read_10bit_signed(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + ssize_t ret; + + /* Take the iio_dev status lock */ + mutex_lock(&indio_dev->mlock); + ret = adis16240_spi_read_signed(dev, attr, buf, 10); + mutex_unlock(&indio_dev->mlock); + + return ret; +} + +static ssize_t adis16240_read_12bit_signed(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + ssize_t ret; + + /* Take the iio_dev status lock */ + mutex_lock(&indio_dev->mlock); + ret = adis16240_spi_read_signed(dev, attr, buf, 12); + mutex_unlock(&indio_dev->mlock); + + return ret; +} + +static ssize_t adis16240_write_16bit(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t len) +{ + struct iio_dev_attr *this_attr = to_iio_dev_attr(attr); + int ret; + long val; + + ret = strict_strtol(buf, 10, &val); + if (ret) + goto error_ret; + ret = adis16240_spi_write_reg_16(dev, this_attr->address, val); + +error_ret: + return ret ? ret : len; +} + +static int adis16240_reset(struct device *dev) +{ + int ret; + ret = adis16240_spi_write_reg_8(dev, + ADIS16240_GLOB_CMD, + ADIS16240_GLOB_CMD_SW_RESET); + if (ret) + dev_err(dev, "problem resetting device"); + + return ret; +} + +static ssize_t adis16240_write_reset(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + if (len < 1) + return -EINVAL; + switch (buf[0]) { + case '1': + case 'y': + case 'Y': + return adis16240_reset(dev); + } + return -EINVAL; +} + +int adis16240_set_irq(struct device *dev, bool enable) +{ + int ret = 0; + u16 msc; + + ret = adis16240_spi_read_reg_16(dev, ADIS16240_MSC_CTRL, &msc); + if (ret) + goto error_ret; + + msc |= ADIS16240_MSC_CTRL_ACTIVE_HIGH; + msc &= ~ADIS16240_MSC_CTRL_DATA_RDY_DIO2; + if (enable) + msc |= ADIS16240_MSC_CTRL_DATA_RDY_EN; + else + msc &= ~ADIS16240_MSC_CTRL_DATA_RDY_EN; + + ret = adis16240_spi_write_reg_16(dev, ADIS16240_MSC_CTRL, msc); + +error_ret: + return ret; +} + +static int adis16240_self_test(struct device *dev) +{ + int ret; + ret = adis16240_spi_write_reg_16(dev, + ADIS16240_MSC_CTRL, + ADIS16240_MSC_CTRL_SELF_TEST_EN); + if (ret) { + dev_err(dev, "problem starting self test"); + goto err_ret; + } + + msleep(ADIS16240_STARTUP_DELAY); + + adis16240_check_status(dev); + +err_ret: + return ret; +} + +static int adis16240_check_status(struct device *dev) +{ + u16 status; + int ret; + + ret = adis16240_spi_read_reg_16(dev, ADIS16240_DIAG_STAT, &status); + + if (ret < 0) { + dev_err(dev, "Reading status failed\n"); + goto error_ret; + } + + ret = status & 0x2F; + if (status & ADIS16240_DIAG_STAT_PWRON_FAIL) + dev_err(dev, "Power-on, self-test fail\n"); + if (status & ADIS16240_DIAG_STAT_SPI_FAIL) + dev_err(dev, "SPI failure\n"); + if (status & ADIS16240_DIAG_STAT_FLASH_UPT) + dev_err(dev, "Flash update failed\n"); + if (status & ADIS16240_DIAG_STAT_POWER_HIGH) + dev_err(dev, "Power supply above 3.625V\n"); + if (status & ADIS16240_DIAG_STAT_POWER_LOW) + dev_err(dev, "Power supply below 2.225V\n"); + +error_ret: + return ret; +} + +static int adis16240_initial_setup(struct adis16240_state *st) +{ + int ret; + struct device *dev = &st->indio_dev->dev; + + /* Disable IRQ */ + ret = adis16240_set_irq(dev, false); + if (ret) { + dev_err(dev, "disable irq failed"); + goto err_ret; + } + + /* Do self test */ + ret = adis16240_self_test(dev); + if (ret) { + dev_err(dev, "self test failure"); + goto err_ret; + } + + /* Read status register to check the result */ + ret = adis16240_check_status(dev); + if (ret) { + adis16240_reset(dev); + dev_err(dev, "device not playing ball -> reset"); + msleep(ADIS16240_STARTUP_DELAY); + ret = adis16240_check_status(dev); + if (ret) { + dev_err(dev, "giving up"); + goto err_ret; + } + } + + printk(KERN_INFO DRIVER_NAME ": at CS%d (irq %d)\n", + st->us->chip_select, st->us->irq); + +err_ret: + return ret; +} + +static IIO_DEV_ATTR_IN_NAMED_RAW(supply, adis16240_read_10bit_unsigned, + ADIS16240_SUPPLY_OUT); +static IIO_DEV_ATTR_IN_RAW(0, adis16240_read_10bit_signed, + ADIS16240_AUX_ADC); +static IIO_CONST_ATTR(in_supply_scale, "0.00488"); +static IIO_DEV_ATTR_ACCEL_X(adis16240_read_10bit_signed, + ADIS16240_XACCL_OUT); +static IIO_DEVICE_ATTR(accel_x_peak_raw, S_IRUGO, + adis16240_read_10bit_signed, NULL, + ADIS16240_XPEAK_OUT); +static IIO_DEV_ATTR_ACCEL_Y(adis16240_read_10bit_signed, + ADIS16240_YACCL_OUT); +static IIO_DEVICE_ATTR(accel_y_peak_raw, S_IRUGO, + adis16240_read_10bit_signed, NULL, + ADIS16240_YPEAK_OUT); +static IIO_DEV_ATTR_ACCEL_Z(adis16240_read_10bit_signed, + ADIS16240_ZACCL_OUT); +static IIO_DEVICE_ATTR(accel_z_peak_raw, S_IRUGO, + adis16240_read_10bit_signed, NULL, + ADIS16240_ZPEAK_OUT); + +static IIO_DEVICE_ATTR(accel_xyz_squared_peak_raw, S_IRUGO, + adis16240_read_12bit_signed, NULL, + ADIS16240_XYZPEAK_OUT); +static IIO_DEV_ATTR_ACCEL_X_OFFSET(S_IWUSR | S_IRUGO, + adis16240_read_10bit_signed, + adis16240_write_16bit, + ADIS16240_XACCL_OFF); +static IIO_DEV_ATTR_ACCEL_Y_OFFSET(S_IWUSR | S_IRUGO, + adis16240_read_10bit_signed, + adis16240_write_16bit, + ADIS16240_YACCL_OFF); +static IIO_DEV_ATTR_ACCEL_Z_OFFSET(S_IWUSR | S_IRUGO, + adis16240_read_10bit_signed, + adis16240_write_16bit, + ADIS16240_ZACCL_OFF); +static IIO_DEV_ATTR_TEMP_RAW(adis16240_read_10bit_unsigned); +static IIO_CONST_ATTR(temp_scale, "0.244"); + +static IIO_DEVICE_ATTR(reset, S_IWUSR, NULL, adis16240_write_reset, 0); + +static IIO_CONST_ATTR_AVAIL_SAMP_FREQ("4096"); + +static IIO_CONST_ATTR(name, "adis16240"); + +static struct attribute *adis16240_event_attributes[] = { + NULL +}; + +static struct attribute_group adis16240_event_attribute_group = { + .attrs = adis16240_event_attributes, +}; + +static struct attribute *adis16240_attributes[] = { + &iio_dev_attr_in_supply_raw.dev_attr.attr, + &iio_const_attr_in_supply_scale.dev_attr.attr, + &iio_dev_attr_in0_raw.dev_attr.attr, + &iio_dev_attr_accel_x_raw.dev_attr.attr, + &iio_dev_attr_accel_x_offset.dev_attr.attr, + &iio_dev_attr_accel_x_peak_raw.dev_attr.attr, + &iio_dev_attr_accel_y_raw.dev_attr.attr, + &iio_dev_attr_accel_y_offset.dev_attr.attr, + &iio_dev_attr_accel_y_peak_raw.dev_attr.attr, + &iio_dev_attr_accel_z_raw.dev_attr.attr, + &iio_dev_attr_accel_z_offset.dev_attr.attr, + &iio_dev_attr_accel_z_peak_raw.dev_attr.attr, + &iio_dev_attr_accel_xyz_squared_peak_raw.dev_attr.attr, + &iio_dev_attr_temp_raw.dev_attr.attr, + &iio_const_attr_temp_scale.dev_attr.attr, + &iio_const_attr_available_sampling_frequency.dev_attr.attr, + &iio_dev_attr_reset.dev_attr.attr, + &iio_const_attr_name.dev_attr.attr, + NULL +}; + +static const struct attribute_group adis16240_attribute_group = { + .attrs = adis16240_attributes, +}; + +static int __devinit adis16240_probe(struct spi_device *spi) +{ + int ret, regdone = 0; + struct adis16240_state *st = kzalloc(sizeof *st, GFP_KERNEL); + if (!st) { + ret = -ENOMEM; + goto error_ret; + } + /* this is only used for removal purposes */ + spi_set_drvdata(spi, st); + + /* Allocate the comms buffers */ + st->rx = kzalloc(sizeof(*st->rx)*ADIS16240_MAX_RX, GFP_KERNEL); + if (st->rx == NULL) { + ret = -ENOMEM; + goto error_free_st; + } + st->tx = kzalloc(sizeof(*st->tx)*ADIS16240_MAX_TX, GFP_KERNEL); + if (st->tx == NULL) { + ret = -ENOMEM; + goto error_free_rx; + } + st->us = spi; + mutex_init(&st->buf_lock); + /* setup the industrialio driver allocated elements */ + st->indio_dev = iio_allocate_device(); + if (st->indio_dev == NULL) { + ret = -ENOMEM; + goto error_free_tx; + } + + st->indio_dev->dev.parent = &spi->dev; + st->indio_dev->num_interrupt_lines = 1; + st->indio_dev->event_attrs = &adis16240_event_attribute_group; + st->indio_dev->attrs = &adis16240_attribute_group; + st->indio_dev->dev_data = (void *)(st); + st->indio_dev->driver_module = THIS_MODULE; + st->indio_dev->modes = INDIO_DIRECT_MODE; + + ret = adis16240_configure_ring(st->indio_dev); + if (ret) + goto error_free_dev; + + ret = iio_device_register(st->indio_dev); + if (ret) + goto error_unreg_ring_funcs; + regdone = 1; + + ret = adis16240_initialize_ring(st->indio_dev->ring); + if (ret) { + printk(KERN_ERR "failed to initialize the ring\n"); + goto error_unreg_ring_funcs; + } + + if (spi->irq) { + ret = iio_register_interrupt_line(spi->irq, + st->indio_dev, + 0, + IRQF_TRIGGER_RISING, + "adis16240"); + if (ret) + goto error_uninitialize_ring; + + ret = adis16240_probe_trigger(st->indio_dev); + if (ret) + goto error_unregister_line; + } + + /* Get the device into a sane initial state */ + ret = adis16240_initial_setup(st); + if (ret) + goto error_remove_trigger; + return 0; + +error_remove_trigger: + adis16240_remove_trigger(st->indio_dev); +error_unregister_line: + if (spi->irq) + iio_unregister_interrupt_line(st->indio_dev, 0); +error_uninitialize_ring: + adis16240_uninitialize_ring(st->indio_dev->ring); +error_unreg_ring_funcs: + adis16240_unconfigure_ring(st->indio_dev); +error_free_dev: + if (regdone) + iio_device_unregister(st->indio_dev); + else + iio_free_device(st->indio_dev); +error_free_tx: + kfree(st->tx); +error_free_rx: + kfree(st->rx); +error_free_st: + kfree(st); +error_ret: + return ret; +} + +static int adis16240_remove(struct spi_device *spi) +{ + struct adis16240_state *st = spi_get_drvdata(spi); + struct iio_dev *indio_dev = st->indio_dev; + + flush_scheduled_work(); + + adis16240_remove_trigger(indio_dev); + if (spi->irq) + iio_unregister_interrupt_line(indio_dev, 0); + + adis16240_uninitialize_ring(indio_dev->ring); + iio_device_unregister(indio_dev); + adis16240_unconfigure_ring(indio_dev); + kfree(st->tx); + kfree(st->rx); + kfree(st); + + return 0; +} + +static struct spi_driver adis16240_driver = { + .driver = { + .name = "adis16240", + .owner = THIS_MODULE, + }, + .probe = adis16240_probe, + .remove = __devexit_p(adis16240_remove), +}; + +static __init int adis16240_init(void) +{ + return spi_register_driver(&adis16240_driver); +} +module_init(adis16240_init); + +static __exit void adis16240_exit(void) +{ + spi_unregister_driver(&adis16240_driver); +} +module_exit(adis16240_exit); + +MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); +MODULE_DESCRIPTION("Analog Devices Programmable Impact Sensor and Recorder"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/staging/iio/accel/adis16240_ring.c b/drivers/staging/iio/accel/adis16240_ring.c new file mode 100644 index 000000000000..26b677bd84c0 --- /dev/null +++ b/drivers/staging/iio/accel/adis16240_ring.c @@ -0,0 +1,254 @@ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/gpio.h> +#include <linux/workqueue.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/spi/spi.h> +#include <linux/sysfs.h> +#include <linux/list.h> + +#include "../iio.h" +#include "../sysfs.h" +#include "../ring_sw.h" +#include "accel.h" +#include "../trigger.h" +#include "adis16240.h" + +/** + * combine_8_to_16() utility function to munge to u8s into u16 + **/ +static inline u16 combine_8_to_16(u8 lower, u8 upper) +{ + u16 _lower = lower; + u16 _upper = upper; + return _lower | (_upper << 8); +} + +static IIO_SCAN_EL_C(supply, ADIS16240_SCAN_SUPPLY, IIO_UNSIGNED(10), + ADIS16240_SUPPLY_OUT, NULL); +static IIO_SCAN_EL_C(accel_x, ADIS16240_SCAN_ACC_X, IIO_SIGNED(10), + ADIS16240_XACCL_OUT, NULL); +static IIO_SCAN_EL_C(accel_y, ADIS16240_SCAN_ACC_Y, IIO_SIGNED(10), + ADIS16240_YACCL_OUT, NULL); +static IIO_SCAN_EL_C(accel_z, ADIS16240_SCAN_ACC_Z, IIO_SIGNED(10), + ADIS16240_ZACCL_OUT, NULL); +static IIO_SCAN_EL_C(aux_adc, ADIS16240_SCAN_AUX_ADC, IIO_UNSIGNED(10), + ADIS16240_AUX_ADC, NULL); +static IIO_SCAN_EL_C(temp, ADIS16240_SCAN_TEMP, IIO_UNSIGNED(10), + ADIS16240_TEMP_OUT, NULL); + +static IIO_SCAN_EL_TIMESTAMP(6); + +static struct attribute *adis16240_scan_el_attrs[] = { + &iio_scan_el_supply.dev_attr.attr, + &iio_scan_el_accel_x.dev_attr.attr, + &iio_scan_el_accel_y.dev_attr.attr, + &iio_scan_el_accel_z.dev_attr.attr, + &iio_scan_el_aux_adc.dev_attr.attr, + &iio_scan_el_temp.dev_attr.attr, + &iio_scan_el_timestamp.dev_attr.attr, + NULL, +}; + +static struct attribute_group adis16240_scan_el_group = { + .attrs = adis16240_scan_el_attrs, + .name = "scan_elements", +}; + +/** + * adis16240_poll_func_th() top half interrupt handler called by trigger + * @private_data: iio_dev + **/ +static void adis16240_poll_func_th(struct iio_dev *indio_dev) +{ + struct adis16240_state *st = iio_dev_get_devdata(indio_dev); + st->last_timestamp = indio_dev->trig->timestamp; + schedule_work(&st->work_trigger_to_ring); +} + +/** + * adis16240_read_ring_data() read data registers which will be placed into ring + * @dev: device associated with child of actual device (iio_dev or iio_trig) + * @rx: somewhere to pass back the value read + **/ +static int adis16240_read_ring_data(struct device *dev, u8 *rx) +{ + struct spi_message msg; + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct adis16240_state *st = iio_dev_get_devdata(indio_dev); + struct spi_transfer xfers[ADIS16240_OUTPUTS + 1]; + int ret; + int i; + + mutex_lock(&st->buf_lock); + + spi_message_init(&msg); + + memset(xfers, 0, sizeof(xfers)); + for (i = 0; i <= ADIS16240_OUTPUTS; i++) { + xfers[i].bits_per_word = 8; + xfers[i].cs_change = 1; + xfers[i].len = 2; + xfers[i].delay_usecs = 30; + xfers[i].tx_buf = st->tx + 2 * i; + st->tx[2 * i] + = ADIS16240_READ_REG(ADIS16240_SUPPLY_OUT + 2 * i); + st->tx[2 * i + 1] = 0; + if (i >= 1) + xfers[i].rx_buf = rx + 2 * (i - 1); + spi_message_add_tail(&xfers[i], &msg); + } + + ret = spi_sync(st->us, &msg); + if (ret) + dev_err(&st->us->dev, "problem when burst reading"); + + mutex_unlock(&st->buf_lock); + + return ret; +} + + +static void adis16240_trigger_bh_to_ring(struct work_struct *work_s) +{ + struct adis16240_state *st + = container_of(work_s, struct adis16240_state, + work_trigger_to_ring); + + int i = 0; + s16 *data; + size_t datasize = st->indio_dev + ->ring->access.get_bpd(st->indio_dev->ring); + + data = kmalloc(datasize , GFP_KERNEL); + if (data == NULL) { + dev_err(&st->us->dev, "memory alloc failed in ring bh"); + return; + } + + if (st->indio_dev->scan_count) + if (adis16240_read_ring_data(&st->indio_dev->dev, st->rx) >= 0) + for (; i < st->indio_dev->scan_count; i++) { + data[i] = combine_8_to_16(st->rx[i*2+1], + st->rx[i*2]); + } + + /* Guaranteed to be aligned with 8 byte boundary */ + if (st->indio_dev->scan_timestamp) + *((s64 *)(data + ((i + 3)/4)*4)) = st->last_timestamp; + + st->indio_dev->ring->access.store_to(st->indio_dev->ring, + (u8 *)data, + st->last_timestamp); + + iio_trigger_notify_done(st->indio_dev->trig); + kfree(data); + + return; +} + +static int adis16240_data_rdy_ring_preenable(struct iio_dev *indio_dev) +{ + size_t size; + dev_dbg(&indio_dev->dev, "%s\n", __func__); + /* Check if there are any scan elements enabled, if not fail*/ + if (!(indio_dev->scan_count || indio_dev->scan_timestamp)) + return -EINVAL; + + if (indio_dev->ring->access.set_bpd) { + if (indio_dev->scan_timestamp) + if (indio_dev->scan_count) + /* Timestamp (aligned sizeof(s64) and data */ + size = (((indio_dev->scan_count * sizeof(s16)) + + sizeof(s64) - 1) + & ~(sizeof(s64) - 1)) + + sizeof(s64); + else /* Timestamp only */ + size = sizeof(s64); + else /* Data only */ + size = indio_dev->scan_count*sizeof(s16); + indio_dev->ring->access.set_bpd(indio_dev->ring, size); + } + + return 0; +} + +static int adis16240_data_rdy_ring_postenable(struct iio_dev *indio_dev) +{ + return indio_dev->trig + ? iio_trigger_attach_poll_func(indio_dev->trig, + indio_dev->pollfunc) + : 0; +} + +static int adis16240_data_rdy_ring_predisable(struct iio_dev *indio_dev) +{ + return indio_dev->trig + ? iio_trigger_dettach_poll_func(indio_dev->trig, + indio_dev->pollfunc) + : 0; +} + +void adis16240_unconfigure_ring(struct iio_dev *indio_dev) +{ + kfree(indio_dev->pollfunc); + iio_sw_rb_free(indio_dev->ring); +} + +int adis16240_configure_ring(struct iio_dev *indio_dev) +{ + int ret = 0; + struct adis16240_state *st = indio_dev->dev_data; + struct iio_ring_buffer *ring; + INIT_WORK(&st->work_trigger_to_ring, adis16240_trigger_bh_to_ring); + /* Set default scan mode */ + + iio_scan_mask_set(indio_dev, iio_scan_el_supply.number); + iio_scan_mask_set(indio_dev, iio_scan_el_accel_x.number); + iio_scan_mask_set(indio_dev, iio_scan_el_accel_y.number); + iio_scan_mask_set(indio_dev, iio_scan_el_accel_z.number); + iio_scan_mask_set(indio_dev, iio_scan_el_temp.number); + iio_scan_mask_set(indio_dev, iio_scan_el_aux_adc.number); + indio_dev->scan_timestamp = true; + + indio_dev->scan_el_attrs = &adis16240_scan_el_group; + + ring = iio_sw_rb_allocate(indio_dev); + if (!ring) { + ret = -ENOMEM; + return ret; + } + indio_dev->ring = ring; + /* Effectively select the ring buffer implementation */ + iio_ring_sw_register_funcs(&ring->access); + ring->preenable = &adis16240_data_rdy_ring_preenable; + ring->postenable = &adis16240_data_rdy_ring_postenable; + ring->predisable = &adis16240_data_rdy_ring_predisable; + ring->owner = THIS_MODULE; + + indio_dev->pollfunc = kzalloc(sizeof(*indio_dev->pollfunc), GFP_KERNEL); + if (indio_dev->pollfunc == NULL) { + ret = -ENOMEM; + goto error_iio_sw_rb_free;; + } + indio_dev->pollfunc->poll_func_main = &adis16240_poll_func_th; + indio_dev->pollfunc->private_data = indio_dev; + indio_dev->modes |= INDIO_RING_TRIGGERED; + return 0; + +error_iio_sw_rb_free: + iio_sw_rb_free(indio_dev->ring); + return ret; +} + +int adis16240_initialize_ring(struct iio_ring_buffer *ring) +{ + return iio_ring_buffer_register(ring, 0); +} + +void adis16240_uninitialize_ring(struct iio_ring_buffer *ring) +{ + iio_ring_buffer_unregister(ring); +} diff --git a/drivers/staging/iio/accel/adis16240_trigger.c b/drivers/staging/iio/accel/adis16240_trigger.c new file mode 100644 index 000000000000..df1312e17f4b --- /dev/null +++ b/drivers/staging/iio/accel/adis16240_trigger.c @@ -0,0 +1,124 @@ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/mutex.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/sysfs.h> +#include <linux/list.h> +#include <linux/spi/spi.h> + +#include "../iio.h" +#include "../sysfs.h" +#include "../trigger.h" +#include "adis16240.h" + +/** + * adis16240_data_rdy_trig_poll() the event handler for the data rdy trig + **/ +static int adis16240_data_rdy_trig_poll(struct iio_dev *dev_info, + int index, + s64 timestamp, + int no_test) +{ + struct adis16240_state *st = iio_dev_get_devdata(dev_info); + struct iio_trigger *trig = st->trig; + + trig->timestamp = timestamp; + iio_trigger_poll(trig); + + return IRQ_HANDLED; +} + +IIO_EVENT_SH(data_rdy_trig, &adis16240_data_rdy_trig_poll); + +static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL); + +static struct attribute *adis16240_trigger_attrs[] = { + &dev_attr_name.attr, + NULL, +}; + +static const struct attribute_group adis16240_trigger_attr_group = { + .attrs = adis16240_trigger_attrs, +}; + +/** + * adis16240_data_rdy_trigger_set_state() set datardy interrupt state + **/ +static int adis16240_data_rdy_trigger_set_state(struct iio_trigger *trig, + bool state) +{ + struct adis16240_state *st = trig->private_data; + struct iio_dev *indio_dev = st->indio_dev; + int ret = 0; + + dev_dbg(&indio_dev->dev, "%s (%d)\n", __func__, state); + ret = adis16240_set_irq(&st->indio_dev->dev, state); + if (state == false) { + iio_remove_event_from_list(&iio_event_data_rdy_trig, + &indio_dev->interrupts[0] + ->ev_list); + flush_scheduled_work(); + } else { + iio_add_event_to_list(&iio_event_data_rdy_trig, + &indio_dev->interrupts[0]->ev_list); + } + return ret; +} + +/** + * adis16240_trig_try_reen() try renabling irq for data rdy trigger + * @trig: the datardy trigger + **/ +static int adis16240_trig_try_reen(struct iio_trigger *trig) +{ + struct adis16240_state *st = trig->private_data; + enable_irq(st->us->irq); + return 0; +} + +int adis16240_probe_trigger(struct iio_dev *indio_dev) +{ + int ret; + struct adis16240_state *st = indio_dev->dev_data; + + st->trig = iio_allocate_trigger(); + st->trig->name = kmalloc(IIO_TRIGGER_NAME_LENGTH, GFP_KERNEL); + if (!st->trig->name) { + ret = -ENOMEM; + goto error_free_trig; + } + snprintf((char *)st->trig->name, + IIO_TRIGGER_NAME_LENGTH, + "adis16240-dev%d", indio_dev->id); + st->trig->dev.parent = &st->us->dev; + st->trig->owner = THIS_MODULE; + st->trig->private_data = st; + st->trig->set_trigger_state = &adis16240_data_rdy_trigger_set_state; + st->trig->try_reenable = &adis16240_trig_try_reen; + st->trig->control_attrs = &adis16240_trigger_attr_group; + ret = iio_trigger_register(st->trig); + + /* select default trigger */ + indio_dev->trig = st->trig; + if (ret) + goto error_free_trig_name; + + return 0; + +error_free_trig_name: + kfree(st->trig->name); +error_free_trig: + iio_free_trigger(st->trig); + + return ret; +} + +void adis16240_remove_trigger(struct iio_dev *indio_dev) +{ + struct adis16240_state *state = indio_dev->dev_data; + + iio_trigger_unregister(state->trig); + kfree(state->trig->name); + iio_free_trigger(state->trig); +} diff --git a/drivers/staging/iio/accel/inclinometer.h b/drivers/staging/iio/accel/inclinometer.h new file mode 100644 index 000000000000..5b49f835eac5 --- /dev/null +++ b/drivers/staging/iio/accel/inclinometer.h @@ -0,0 +1,23 @@ +/* + * Inclinometer related attributes + */ +#include "../sysfs.h" + +#define IIO_DEV_ATTR_INCLI_X(_show, _addr) \ + IIO_DEVICE_ATTR(incli_x_raw, S_IRUGO, _show, NULL, _addr) + +#define IIO_DEV_ATTR_INCLI_Y(_show, _addr) \ + IIO_DEVICE_ATTR(incli_y_raw, S_IRUGO, _show, NULL, _addr) + +#define IIO_DEV_ATTR_INCLI_Z(_show, _addr) \ + IIO_DEVICE_ATTR(incli_z_raw, S_IRUGO, _show, NULL, _addr) + +#define IIO_DEV_ATTR_INCLI_X_OFFSET(_mode, _show, _store, _addr) \ + IIO_DEVICE_ATTR(incli_x_offset, _mode, _show, _store, _addr) + +#define IIO_DEV_ATTR_INCLI_Y_OFFSET(_mode, _show, _store, _addr) \ + IIO_DEVICE_ATTR(incli_y_offset, _mode, _show, _store, _addr) + +#define IIO_DEV_ATTR_INCLI_Z_OFFSET(_mode, _show, _store, _addr) \ + IIO_DEVICE_ATTR(incli_z_offset, _mode, _show, _store, _addr) + diff --git a/drivers/staging/iio/accel/kxsd9.c b/drivers/staging/iio/accel/kxsd9.c index db2dd537ffb0..ae7ffe114fc5 100644 --- a/drivers/staging/iio/accel/kxsd9.c +++ b/drivers/staging/iio/accel/kxsd9.c @@ -26,6 +26,7 @@ #include <linux/rtc.h> #include <linux/delay.h> #include <linux/slab.h> +#include <linux/string.h> #include "../iio.h" #include "../sysfs.h" @@ -51,8 +52,10 @@ #define KXSD9_READ(a) (0x80 | (a)) #define KXSD9_WRITE(a) (a) -#define IIO_DEV_ATTR_ACCEL_SET_RANGE(_mode, _show, _store) \ - IIO_DEVICE_ATTR(accel_range, _mode, _show, _store, 0) +#define KXSD9_SCALE_2G "0.011978" +#define KXSD9_SCALE_4G "0.023927" +#define KXSD9_SCALE_6G "0.035934" +#define KXSD9_SCALE_8G "0.047853" #define KXSD9_STATE_RX_SIZE 2 #define KXSD9_STATE_TX_SIZE 4 @@ -73,9 +76,9 @@ struct kxsd9_state { }; /* This may want to move to mili g to allow for non integer ranges */ -static ssize_t kxsd9_read_accel_range(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t kxsd9_read_scale(struct device *dev, + struct device_attribute *attr, + char *buf) { int ret; ssize_t len = 0; @@ -101,16 +104,16 @@ static ssize_t kxsd9_read_accel_range(struct device *dev, switch (st->rx[1] & KXSD9_FS_MASK) { case KXSD9_FS_8: - len += sprintf(buf, "8\n"); + len += sprintf(buf, "%s\n", KXSD9_SCALE_8G); break; case KXSD9_FS_6: - len += sprintf(buf, "6\n"); + len += sprintf(buf, "%s\n", KXSD9_SCALE_6G); break; case KXSD9_FS_4: - len += sprintf(buf, "4\n"); + len += sprintf(buf, "%s\n", KXSD9_SCALE_4G); break; case KXSD9_FS_2: - len += sprintf(buf, "2\n"); + len += sprintf(buf, "%s\n", KXSD9_SCALE_2G); break; } @@ -119,12 +122,12 @@ error_ret: return ret ? ret : len; } -static ssize_t kxsd9_write_accel_range(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) +static ssize_t kxsd9_write_scale(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t len) { - long readin; + struct spi_message msg; int ret; struct iio_dev *indio_dev = dev_get_drvdata(dev); @@ -145,25 +148,25 @@ static ssize_t kxsd9_write_accel_range(struct device *dev, }, }; - ret = strict_strtol(buf, 10, &readin); - if (ret) - return ret; - switch (readin) { - case 8: + if (!strncmp(buf, KXSD9_SCALE_8G, + strlen(buf) < strlen(KXSD9_SCALE_8G) + ? strlen(buf) : strlen(KXSD9_SCALE_8G))) val = KXSD9_FS_8; - break; - case 6: + else if (!strncmp(buf, KXSD9_SCALE_6G, + strlen(buf) < strlen(KXSD9_SCALE_6G) + ? strlen(buf) : strlen(KXSD9_SCALE_6G))) val = KXSD9_FS_6; - break; - case 4: + else if (!strncmp(buf, KXSD9_SCALE_4G, + strlen(buf) < strlen(KXSD9_SCALE_4G) + ? strlen(buf) : strlen(KXSD9_SCALE_4G))) val = KXSD9_FS_4; - break; - case 2: + else if (!strncmp(buf, KXSD9_SCALE_2G, + strlen(buf) < strlen(KXSD9_SCALE_2G) + ? strlen(buf) : strlen(KXSD9_SCALE_2G))) val = KXSD9_FS_2; - break; - default: + else return -EINVAL; - } + mutex_lock(&st->buf_lock); st->tx[0] = KXSD9_READ(KXSD9_REG_CTRL_C); st->tx[1] = 0; @@ -182,6 +185,7 @@ error_ret: mutex_unlock(&st->buf_lock); return ret ? ret : len; } + static ssize_t kxsd9_read_accel(struct device *dev, struct device_attribute *attr, char *buf) @@ -227,17 +231,27 @@ error_ret: static IIO_DEV_ATTR_ACCEL_X(kxsd9_read_accel, KXSD9_REG_X); static IIO_DEV_ATTR_ACCEL_Y(kxsd9_read_accel, KXSD9_REG_Y); static IIO_DEV_ATTR_ACCEL_Z(kxsd9_read_accel, KXSD9_REG_Z); -static IIO_DEV_ATTR_ADC(0, kxsd9_read_accel, KXSD9_REG_AUX); -static IIO_DEV_ATTR_ACCEL_SET_RANGE(S_IRUGO | S_IWUSR, - kxsd9_read_accel_range, - kxsd9_write_accel_range); +static IIO_DEV_ATTR_IN_RAW(0, kxsd9_read_accel, KXSD9_REG_AUX); + +static IIO_DEVICE_ATTR(accel_scale, + S_IRUGO | S_IWUSR, + kxsd9_read_scale, + kxsd9_write_scale, + 0); + +static IIO_CONST_ATTR(accel_scale_available, + KXSD9_SCALE_2G " " + KXSD9_SCALE_4G " " + KXSD9_SCALE_6G " " + KXSD9_SCALE_8G); static struct attribute *kxsd9_attributes[] = { - &iio_dev_attr_accel_x.dev_attr.attr, - &iio_dev_attr_accel_y.dev_attr.attr, - &iio_dev_attr_accel_z.dev_attr.attr, - &iio_dev_attr_adc_0.dev_attr.attr, - &iio_dev_attr_accel_range.dev_attr.attr, + &iio_dev_attr_accel_x_raw.dev_attr.attr, + &iio_dev_attr_accel_y_raw.dev_attr.attr, + &iio_dev_attr_accel_z_raw.dev_attr.attr, + &iio_dev_attr_in0_raw.dev_attr.attr, + &iio_dev_attr_accel_scale.dev_attr.attr, + &iio_const_attr_accel_scale_available.dev_attr.attr, NULL, }; diff --git a/drivers/staging/iio/accel/lis3l02dq.h b/drivers/staging/iio/accel/lis3l02dq.h index 91a5375408c2..e76a97937a36 100644 --- a/drivers/staging/iio/accel/lis3l02dq.h +++ b/drivers/staging/iio/accel/lis3l02dq.h @@ -179,10 +179,6 @@ int lis3l02dq_spi_read_reg_8(struct device *dev, int lis3l02dq_spi_write_reg_8(struct device *dev, u8 reg_address, u8 *val); -#define LIS3L02DQ_SCAN_ACC_X 0 -#define LIS3L02DQ_SCAN_ACC_Y 1 -#define LIS3L02DQ_SCAN_ACC_Z 2 - #ifdef CONFIG_IIO_RING_BUFFER /* At the moment triggers are only used for ring buffer diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c index 82e43588e8a5..6b5577d7d8de 100644 --- a/drivers/staging/iio/accel/lis3l02dq_core.c +++ b/drivers/staging/iio/accel/lis3l02dq_core.c @@ -458,41 +458,39 @@ err_ret: return ret; } -static IIO_DEV_ATTR_ACCEL_X_OFFSET(S_IWUSR | S_IRUGO, - lis3l02dq_read_signed, - lis3l02dq_write_signed, - LIS3L02DQ_REG_OFFSET_X_ADDR); - -static IIO_DEV_ATTR_ACCEL_Y_OFFSET(S_IWUSR | S_IRUGO, - lis3l02dq_read_signed, - lis3l02dq_write_signed, - LIS3L02DQ_REG_OFFSET_Y_ADDR); - -static IIO_DEV_ATTR_ACCEL_Z_OFFSET(S_IWUSR | S_IRUGO, - lis3l02dq_read_signed, - lis3l02dq_write_signed, - LIS3L02DQ_REG_OFFSET_Z_ADDR); - -static IIO_DEV_ATTR_ACCEL_X_GAIN(S_IWUSR | S_IRUGO, - lis3l02dq_read_unsigned, - lis3l02dq_write_unsigned, - LIS3L02DQ_REG_GAIN_X_ADDR); - -static IIO_DEV_ATTR_ACCEL_Y_GAIN(S_IWUSR | S_IRUGO, - lis3l02dq_read_unsigned, - lis3l02dq_write_unsigned, - LIS3L02DQ_REG_GAIN_Y_ADDR); - -static IIO_DEV_ATTR_ACCEL_Z_GAIN(S_IWUSR | S_IRUGO, - lis3l02dq_read_unsigned, - lis3l02dq_write_unsigned, - LIS3L02DQ_REG_GAIN_Z_ADDR); - -static IIO_DEV_ATTR_ACCEL_THRESH(S_IWUSR | S_IRUGO, - lis3l02dq_read_16bit_signed, - lis3l02dq_write_16bit_signed, - LIS3L02DQ_REG_THS_L_ADDR); - +#define LIS3L02DQ_SIGNED_ATTR(name, reg) \ + IIO_DEVICE_ATTR(name, \ + S_IWUSR | S_IRUGO, \ + lis3l02dq_read_signed, \ + lis3l02dq_write_signed, \ + reg); + +#define LIS3L02DQ_UNSIGNED_ATTR(name, reg) \ + IIO_DEVICE_ATTR(name, \ + S_IWUSR | S_IRUGO, \ + lis3l02dq_read_unsigned, \ + lis3l02dq_write_unsigned, \ + reg); + +static LIS3L02DQ_SIGNED_ATTR(accel_x_calibbias, + LIS3L02DQ_REG_OFFSET_X_ADDR); +static LIS3L02DQ_SIGNED_ATTR(accel_y_calibbias, + LIS3L02DQ_REG_OFFSET_Y_ADDR); +static LIS3L02DQ_SIGNED_ATTR(accel_z_calibbias, + LIS3L02DQ_REG_OFFSET_Z_ADDR); + +static LIS3L02DQ_UNSIGNED_ATTR(accel_x_calibscale, + LIS3L02DQ_REG_GAIN_X_ADDR); +static LIS3L02DQ_UNSIGNED_ATTR(accel_y_calibscale, + LIS3L02DQ_REG_GAIN_Y_ADDR); +static LIS3L02DQ_UNSIGNED_ATTR(accel_z_calibscale, + LIS3L02DQ_REG_GAIN_Z_ADDR); + +static IIO_DEVICE_ATTR(accel_mag_either_rising_value, + S_IWUSR | S_IRUGO, + lis3l02dq_read_16bit_signed, + lis3l02dq_write_16bit_signed, + LIS3L02DQ_REG_THS_L_ADDR); /* RFC The reading method for these will change depending on whether * ring buffer capture is in use. Is it worth making these take two * functions and let the core handle which to call, or leave as in this @@ -512,7 +510,7 @@ static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO, lis3l02dq_read_frequency, lis3l02dq_write_frequency); -static IIO_CONST_ATTR_AVAIL_SAMP_FREQ("280 560 1120 4480"); +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("280 560 1120 4480"); static ssize_t lis3l02dq_read_interrupt_config(struct device *dev, struct device_attribute *attr, @@ -522,7 +520,7 @@ static ssize_t lis3l02dq_read_interrupt_config(struct device *dev, s8 val; struct iio_event_attr *this_attr = to_iio_event_attr(attr); - ret = lis3l02dq_spi_read_reg_8(dev, + ret = lis3l02dq_spi_read_reg_8(dev->parent, LIS3L02DQ_REG_WAKE_UP_CFG_ADDR, (u8 *)&val); @@ -545,7 +543,7 @@ static ssize_t lis3l02dq_write_interrupt_config(struct device *dev, mutex_lock(&indio_dev->mlock); /* read current value */ - ret = lis3l02dq_spi_read_reg_8(dev, + ret = lis3l02dq_spi_read_reg_8(dev->parent, LIS3L02DQ_REG_WAKE_UP_CFG_ADDR, &valold); if (ret) @@ -668,43 +666,51 @@ static void lis3l02dq_thresh_handler_bh_no_check(struct work_struct *work_s) /* A shared handler for a number of threshold types */ IIO_EVENT_SH(threshold, &lis3l02dq_thresh_handler_th); -IIO_EVENT_ATTR_ACCEL_X_HIGH_SH(iio_event_threshold, - lis3l02dq_read_interrupt_config, - lis3l02dq_write_interrupt_config, - LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_X_HIGH); - -IIO_EVENT_ATTR_ACCEL_Y_HIGH_SH(iio_event_threshold, - lis3l02dq_read_interrupt_config, - lis3l02dq_write_interrupt_config, - LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Y_HIGH); - -IIO_EVENT_ATTR_ACCEL_Z_HIGH_SH(iio_event_threshold, - lis3l02dq_read_interrupt_config, - lis3l02dq_write_interrupt_config, - LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Z_HIGH); - -IIO_EVENT_ATTR_ACCEL_X_LOW_SH(iio_event_threshold, - lis3l02dq_read_interrupt_config, - lis3l02dq_write_interrupt_config, - LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_X_LOW); - -IIO_EVENT_ATTR_ACCEL_Y_LOW_SH(iio_event_threshold, - lis3l02dq_read_interrupt_config, - lis3l02dq_write_interrupt_config, - LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Y_LOW); +IIO_EVENT_ATTR_SH(accel_x_mag_pos_rising_en, + iio_event_threshold, + lis3l02dq_read_interrupt_config, + lis3l02dq_write_interrupt_config, + LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_X_HIGH); + +IIO_EVENT_ATTR_SH(accel_y_mag_pos_rising_en, + iio_event_threshold, + lis3l02dq_read_interrupt_config, + lis3l02dq_write_interrupt_config, + LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Y_HIGH); + +IIO_EVENT_ATTR_SH(accel_z_mag_pos_rising_en, + iio_event_threshold, + lis3l02dq_read_interrupt_config, + lis3l02dq_write_interrupt_config, + LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Z_HIGH); + +IIO_EVENT_ATTR_SH(accel_x_mag_neg_rising_en, + iio_event_threshold, + lis3l02dq_read_interrupt_config, + lis3l02dq_write_interrupt_config, + LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_X_LOW); + +IIO_EVENT_ATTR_SH(accel_y_mag_neg_rising_en, + iio_event_threshold, + lis3l02dq_read_interrupt_config, + lis3l02dq_write_interrupt_config, + LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Y_LOW); + +IIO_EVENT_ATTR_SH(accel_z_mag_neg_rising_en, + iio_event_threshold, + lis3l02dq_read_interrupt_config, + lis3l02dq_write_interrupt_config, + LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Z_LOW); -IIO_EVENT_ATTR_ACCEL_Z_LOW_SH(iio_event_threshold, - lis3l02dq_read_interrupt_config, - lis3l02dq_write_interrupt_config, - LIS3L02DQ_REG_WAKE_UP_CFG_INTERRUPT_Z_LOW); static struct attribute *lis3l02dq_event_attributes[] = { - &iio_event_attr_accel_x_high.dev_attr.attr, - &iio_event_attr_accel_y_high.dev_attr.attr, - &iio_event_attr_accel_z_high.dev_attr.attr, - &iio_event_attr_accel_x_low.dev_attr.attr, - &iio_event_attr_accel_y_low.dev_attr.attr, - &iio_event_attr_accel_z_low.dev_attr.attr, + &iio_event_attr_accel_x_mag_pos_rising_en.dev_attr.attr, + &iio_event_attr_accel_y_mag_pos_rising_en.dev_attr.attr, + &iio_event_attr_accel_z_mag_pos_rising_en.dev_attr.attr, + &iio_event_attr_accel_x_mag_neg_rising_en.dev_attr.attr, + &iio_event_attr_accel_y_mag_neg_rising_en.dev_attr.attr, + &iio_event_attr_accel_z_mag_neg_rising_en.dev_attr.attr, + &iio_dev_attr_accel_mag_either_rising_value.dev_attr.attr, NULL }; @@ -713,20 +719,21 @@ static struct attribute_group lis3l02dq_event_attribute_group = { }; static IIO_CONST_ATTR(name, "lis3l02dq"); +static IIO_CONST_ATTR(accel_scale, "0.00958"); static struct attribute *lis3l02dq_attributes[] = { - &iio_dev_attr_accel_x_offset.dev_attr.attr, - &iio_dev_attr_accel_y_offset.dev_attr.attr, - &iio_dev_attr_accel_z_offset.dev_attr.attr, - &iio_dev_attr_accel_x_gain.dev_attr.attr, - &iio_dev_attr_accel_y_gain.dev_attr.attr, - &iio_dev_attr_accel_z_gain.dev_attr.attr, - &iio_dev_attr_thresh.dev_attr.attr, - &iio_dev_attr_accel_x.dev_attr.attr, - &iio_dev_attr_accel_y.dev_attr.attr, - &iio_dev_attr_accel_z.dev_attr.attr, + &iio_dev_attr_accel_x_calibbias.dev_attr.attr, + &iio_dev_attr_accel_y_calibbias.dev_attr.attr, + &iio_dev_attr_accel_z_calibbias.dev_attr.attr, + &iio_dev_attr_accel_x_calibscale.dev_attr.attr, + &iio_dev_attr_accel_y_calibscale.dev_attr.attr, + &iio_dev_attr_accel_z_calibscale.dev_attr.attr, + &iio_const_attr_accel_scale.dev_attr.attr, + &iio_dev_attr_accel_x_raw.dev_attr.attr, + &iio_dev_attr_accel_y_raw.dev_attr.attr, + &iio_dev_attr_accel_z_raw.dev_attr.attr, &iio_dev_attr_sampling_frequency.dev_attr.attr, - &iio_const_attr_available_sampling_frequency.dev_attr.attr, + &iio_const_attr_sampling_frequency_available.dev_attr.attr, &iio_const_attr_name.dev_attr.attr, NULL }; diff --git a/drivers/staging/iio/accel/lis3l02dq_ring.c b/drivers/staging/iio/accel/lis3l02dq_ring.c index a4d97ea0df3d..e4e202e6cb3a 100644 --- a/drivers/staging/iio/accel/lis3l02dq_ring.c +++ b/drivers/staging/iio/accel/lis3l02dq_ring.c @@ -75,16 +75,16 @@ error_ret: return ret; } -static IIO_SCAN_EL_C(accel_x, LIS3L02DQ_SCAN_ACC_X, IIO_SIGNED(16), +static IIO_SCAN_EL_C(accel_x, 0, IIO_SIGNED(16), LIS3L02DQ_REG_OUT_X_L_ADDR, &lis3l02dq_scan_el_set_state); -static IIO_SCAN_EL_C(accel_y, LIS3L02DQ_SCAN_ACC_Y, IIO_SIGNED(16), +static IIO_SCAN_EL_C(accel_y, 1, IIO_SIGNED(16), LIS3L02DQ_REG_OUT_Y_L_ADDR, &lis3l02dq_scan_el_set_state); -static IIO_SCAN_EL_C(accel_z, LIS3L02DQ_SCAN_ACC_Z, IIO_SIGNED(16), +static IIO_SCAN_EL_C(accel_z, 2, IIO_SIGNED(16), LIS3L02DQ_REG_OUT_Z_L_ADDR, &lis3l02dq_scan_el_set_state); -static IIO_SCAN_EL_TIMESTAMP; +static IIO_SCAN_EL_TIMESTAMP(3); static struct attribute *lis3l02dq_scan_el_attrs[] = { &iio_scan_el_accel_x.dev_attr.attr, @@ -192,8 +192,7 @@ error_ret: } -static const u8 read_all_tx_array[] = -{ +static const u8 read_all_tx_array[] = { LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_X_L_ADDR), 0, LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_X_H_ADDR), 0, LIS3L02DQ_READ_REG(LIS3L02DQ_REG_OUT_Y_L_ADDR), 0, @@ -208,7 +207,7 @@ static const u8 read_all_tx_array[] = * @rx_array: (dma capable) recieve array, must be at least * 4*number of channels **/ -int lis3l02dq_read_all(struct lis3l02dq_state *st, u8 *rx_array) +static int lis3l02dq_read_all(struct lis3l02dq_state *st, u8 *rx_array) { struct spi_transfer *xfers; struct spi_message msg; @@ -358,10 +357,10 @@ static int lis3l02dq_data_rdy_ring_predisable(struct iio_dev *indio_dev) /* Caller responsible for locking as necessary. */ -static int __lis3l02dq_write_data_ready_config(struct device *dev, - struct - iio_event_handler_list *list, - bool state) +static int +__lis3l02dq_write_data_ready_config(struct device *dev, + struct iio_event_handler_list *list, + bool state) { int ret; u8 valold; @@ -584,7 +583,7 @@ error_iio_sw_rb_free: int lis3l02dq_initialize_ring(struct iio_ring_buffer *ring) { - return iio_ring_buffer_register(ring); + return iio_ring_buffer_register(ring, 0); } void lis3l02dq_uninitialize_ring(struct iio_ring_buffer *ring) @@ -592,7 +591,6 @@ void lis3l02dq_uninitialize_ring(struct iio_ring_buffer *ring) iio_ring_buffer_unregister(ring); } - int lis3l02dq_set_ring_length(struct iio_dev *indio_dev, int length) { /* Set sensible defaults for the ring buffer */ diff --git a/drivers/staging/iio/accel/sca3000.h b/drivers/staging/iio/accel/sca3000.h index da7d3cb5ae71..e5321999b263 100644 --- a/drivers/staging/iio/accel/sca3000.h +++ b/drivers/staging/iio/accel/sca3000.h @@ -187,6 +187,7 @@ struct sca3000_state { /** * struct sca3000_chip_info - model dependant parameters * @name: model identification + * @scale: string containing floating point scale factor * @temp_output: some devices have temperature sensors. * @measurement_mode_freq: normal mode sampling frequency * @option_mode_1: first optional mode. Not all models have one @@ -199,6 +200,7 @@ struct sca3000_state { **/ struct sca3000_chip_info { const char *name; + const char *scale; bool temp_output; int measurement_mode_freq; int option_mode_1; diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c index 1c229869a22d..d4f82c39f335 100644 --- a/drivers/staging/iio/accel/sca3000_core.c +++ b/drivers/staging/iio/accel/sca3000_core.c @@ -27,11 +27,9 @@ enum sca3000_variant { d01, - d03, e02, e04, e05, - l01, }; /* Note where option modes are not defined, the chip simply does not @@ -44,21 +42,20 @@ enum sca3000_variant { static const struct sca3000_chip_info sca3000_spi_chip_info_tbl[] = { { .name = "sca3000-d01", + .scale = " 0.0073575", .temp_output = true, .measurement_mode_freq = 250, .option_mode_1 = SCA3000_OP_MODE_BYPASS, .option_mode_1_freq = 250, }, { - /* No data sheet available - may be the same as the 3100-d03?*/ - .name = "sca3000-d03", - .temp_output = true, - }, { .name = "sca3000-e02", + .scale = "0.00981", .measurement_mode_freq = 125, .option_mode_1 = SCA3000_OP_MODE_NARROW, .option_mode_1_freq = 63, }, { .name = "sca3000-e04", + .scale = "0.01962", .measurement_mode_freq = 100, .option_mode_1 = SCA3000_OP_MODE_NARROW, .option_mode_1_freq = 50, @@ -66,18 +63,12 @@ static const struct sca3000_chip_info sca3000_spi_chip_info_tbl[] = { .option_mode_2_freq = 400, }, { .name = "sca3000-e05", + .scale = "0.0613125", .measurement_mode_freq = 200, .option_mode_1 = SCA3000_OP_MODE_NARROW, .option_mode_1_freq = 50, .option_mode_2 = SCA3000_OP_MODE_WIDE, .option_mode_2_freq = 400, - }, { - /* No data sheet available. - * Frequencies are unknown. - */ - .name = "sca3000-l01", - .temp_output = true, - .option_mode_1 = SCA3000_OP_MODE_BYPASS, }, }; @@ -286,7 +277,7 @@ static int sca3000_check_status(struct device *dev) if (ret < 0) goto error_ret; if (rx[1] & SCA3000_EEPROM_CS_ERROR) - dev_err(dev, "eeprom error \n"); + dev_err(dev, "eeprom error\n"); if (rx[1] & SCA3000_SPI_FRAME_ERROR) dev_err(dev, "Previous SPI Frame was corrupt\n"); kfree(rx); @@ -327,6 +318,14 @@ error_ret: return ret ? ret : len; } +static ssize_t sca3000_show_scale(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *dev_info = dev_get_drvdata(dev); + struct sca3000_state *st = dev_info->dev_data; + return sprintf(buf, "%s\n", st->info->scale); +} static ssize_t sca3000_show_name(struct device *dev, struct device_attribute *attr, @@ -395,7 +394,7 @@ sca3000_show_available_measurement_modes(struct device *dev, break; } /* always supported */ - len += sprintf(buf + len, " 3 - motion detection \n"); + len += sprintf(buf + len, " 3 - motion detection\n"); return len; } @@ -495,7 +494,7 @@ error_ret: /* Not even vaguely standard attributes so defined here rather than * in the relevant IIO core headers */ -static IIO_DEVICE_ATTR(available_measurement_modes, S_IRUGO, +static IIO_DEVICE_ATTR(measurement_mode_available, S_IRUGO, sca3000_show_available_measurement_modes, NULL, 0); @@ -508,6 +507,8 @@ static IIO_DEVICE_ATTR(measurement_mode, S_IRUGO | S_IWUSR, static IIO_DEV_ATTR_NAME(sca3000_show_name); static IIO_DEV_ATTR_REV(sca3000_show_rev); +static IIO_DEVICE_ATTR(accel_scale, S_IRUGO, sca3000_show_scale, + NULL, 0); static IIO_DEV_ATTR_ACCEL_X(sca3000_read_13bit_signed, SCA3000_REG_ADDR_X_MSB); @@ -683,7 +684,7 @@ error_free_lock: /* Should only really be registered if ring buffer support is compiled in. * Does no harm however and doing it right would add a fair bit of complexity */ -static IIO_DEV_ATTR_AVAIL_SAMP_FREQ(sca3000_read_av_freq); +static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(sca3000_read_av_freq); static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO, sca3000_read_frequency, @@ -718,7 +719,10 @@ static ssize_t sca3000_read_temp(struct device *dev, error_ret: return ret; } -static IIO_DEV_ATTR_TEMP(sca3000_read_temp); +static IIO_DEV_ATTR_TEMP_RAW(sca3000_read_temp); + +static IIO_CONST_ATTR(temp_scale, "0.555556"); +static IIO_CONST_ATTR(temp_offset, "-214.6"); /** * sca3000_show_thresh() sysfs query of a threshold @@ -770,31 +774,34 @@ static ssize_t sca3000_write_thresh(struct device *dev, return ret ? ret : len; } -static IIO_DEV_ATTR_ACCEL_THRESH_X(S_IRUGO | S_IWUSR, - sca3000_show_thresh, - sca3000_write_thresh, - SCA3000_REG_CTRL_SEL_MD_X_TH); -static IIO_DEV_ATTR_ACCEL_THRESH_Y(S_IRUGO | S_IWUSR, - sca3000_show_thresh, - sca3000_write_thresh, - SCA3000_REG_CTRL_SEL_MD_Y_TH); -static IIO_DEV_ATTR_ACCEL_THRESH_Z(S_IRUGO | S_IWUSR, - sca3000_show_thresh, - sca3000_write_thresh, - SCA3000_REG_CTRL_SEL_MD_Z_TH); +static IIO_DEVICE_ATTR(accel_x_mag_either_rising_value, + S_IRUGO | S_IWUSR, + sca3000_show_thresh, + sca3000_write_thresh, + SCA3000_REG_CTRL_SEL_MD_X_TH); + +static IIO_DEVICE_ATTR(accel_y_mag_either_rising_value, + S_IRUGO | S_IWUSR, + sca3000_show_thresh, + sca3000_write_thresh, + SCA3000_REG_CTRL_SEL_MD_Y_TH); + +static IIO_DEVICE_ATTR(accel_z_mag_either_rising_value, + S_IRUGO | S_IWUSR, + sca3000_show_thresh, + sca3000_write_thresh, + SCA3000_REG_CTRL_SEL_MD_Z_TH); static struct attribute *sca3000_attributes[] = { &iio_dev_attr_name.dev_attr.attr, &iio_dev_attr_revision.dev_attr.attr, - &iio_dev_attr_accel_x.dev_attr.attr, - &iio_dev_attr_accel_y.dev_attr.attr, - &iio_dev_attr_accel_z.dev_attr.attr, - &iio_dev_attr_thresh_accel_x.dev_attr.attr, - &iio_dev_attr_thresh_accel_y.dev_attr.attr, - &iio_dev_attr_thresh_accel_z.dev_attr.attr, - &iio_dev_attr_available_measurement_modes.dev_attr.attr, + &iio_dev_attr_accel_scale.dev_attr.attr, + &iio_dev_attr_accel_x_raw.dev_attr.attr, + &iio_dev_attr_accel_y_raw.dev_attr.attr, + &iio_dev_attr_accel_z_raw.dev_attr.attr, + &iio_dev_attr_measurement_mode_available.dev_attr.attr, &iio_dev_attr_measurement_mode.dev_attr.attr, - &iio_dev_attr_available_sampling_frequency.dev_attr.attr, + &iio_dev_attr_sampling_frequency_available.dev_attr.attr, &iio_dev_attr_sampling_frequency.dev_attr.attr, NULL, }; @@ -802,18 +809,18 @@ static struct attribute *sca3000_attributes[] = { static struct attribute *sca3000_attributes_with_temp[] = { &iio_dev_attr_name.dev_attr.attr, &iio_dev_attr_revision.dev_attr.attr, - &iio_dev_attr_accel_x.dev_attr.attr, - &iio_dev_attr_accel_y.dev_attr.attr, - &iio_dev_attr_accel_z.dev_attr.attr, - &iio_dev_attr_thresh_accel_x.dev_attr.attr, - &iio_dev_attr_thresh_accel_y.dev_attr.attr, - &iio_dev_attr_thresh_accel_z.dev_attr.attr, - &iio_dev_attr_available_measurement_modes.dev_attr.attr, + &iio_dev_attr_accel_scale.dev_attr.attr, + &iio_dev_attr_accel_x_raw.dev_attr.attr, + &iio_dev_attr_accel_y_raw.dev_attr.attr, + &iio_dev_attr_accel_z_raw.dev_attr.attr, + &iio_dev_attr_measurement_mode_available.dev_attr.attr, &iio_dev_attr_measurement_mode.dev_attr.attr, - &iio_dev_attr_available_sampling_frequency.dev_attr.attr, + &iio_dev_attr_sampling_frequency_available.dev_attr.attr, &iio_dev_attr_sampling_frequency.dev_attr.attr, /* Only present if temp sensor is */ - &iio_dev_attr_temp.dev_attr.attr, + &iio_dev_attr_temp_raw.dev_attr.attr, + &iio_const_attr_temp_offset.dev_attr.attr, + &iio_const_attr_temp_scale.dev_attr.attr, NULL, }; @@ -910,7 +917,7 @@ static ssize_t sca3000_query_mo_det(struct device *dev, struct device_attribute *attr, char *buf) { - struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct iio_dev *indio_dev = dev_get_drvdata(dev->parent); struct sca3000_state *st = indio_dev->dev_data; struct iio_event_attr *this_attr = to_iio_event_attr(attr); int ret, len = 0; @@ -975,7 +982,7 @@ static ssize_t sca3000_query_ring_int(struct device *dev, struct iio_event_attr *this_attr = to_iio_event_attr(attr); int ret, len; u8 *rx; - struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct iio_dev *indio_dev = dev_get_drvdata(dev->parent); struct sca3000_state *st = indio_dev->dev_data; mutex_lock(&st->lock); ret = sca3000_read_data(st, SCA3000_REG_ADDR_INT_MASK, &rx, 1); @@ -995,7 +1002,7 @@ static ssize_t sca3000_set_ring_int(struct device *dev, const char *buf, size_t len) { - struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct iio_dev *indio_dev = dev_get_drvdata(dev->parent); struct sca3000_state *st = indio_dev->dev_data; struct iio_event_attr *this_attr = to_iio_event_attr(attr); @@ -1085,7 +1092,7 @@ static ssize_t sca3000_set_mo_det(struct device *dev, const char *buf, size_t len) { - struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct iio_dev *indio_dev = dev_get_drvdata(dev->parent); struct sca3000_state *st = indio_dev->dev_data; struct iio_event_attr *this_attr = to_iio_event_attr(attr); long val; @@ -1155,20 +1162,23 @@ IIO_EVENT_ATTR_FREE_FALL_DETECT_SH(iio_event_all, 0) /* Motion detector related event attributes */ -IIO_EVENT_ATTR_ACCEL_X_HIGH_SH(iio_event_all, - sca3000_query_mo_det, - sca3000_set_mo_det, - SCA3000_MD_CTRL_OR_X); - -IIO_EVENT_ATTR_ACCEL_Y_HIGH_SH(iio_event_all, - sca3000_query_mo_det, - sca3000_set_mo_det, - SCA3000_MD_CTRL_OR_Y); - -IIO_EVENT_ATTR_ACCEL_Z_HIGH_SH(iio_event_all, - sca3000_query_mo_det, - sca3000_set_mo_det, - SCA3000_MD_CTRL_OR_Z); +IIO_EVENT_ATTR_SH(accel_x_mag_either_rising_en, + iio_event_all, + sca3000_query_mo_det, + sca3000_set_mo_det, + SCA3000_MD_CTRL_OR_X); + +IIO_EVENT_ATTR_SH(accel_y_mag_either_rising_en, + iio_event_all, + sca3000_query_mo_det, + sca3000_set_mo_det, + SCA3000_MD_CTRL_OR_Y); + +IIO_EVENT_ATTR_SH(accel_z_mag_either_rising_en, + iio_event_all, + sca3000_query_mo_det, + sca3000_set_mo_det, + SCA3000_MD_CTRL_OR_Z); /* Hardware ring buffer related event attributes */ IIO_EVENT_ATTR_RING_50_FULL_SH(iio_event_all, @@ -1183,11 +1193,14 @@ IIO_EVENT_ATTR_RING_75_FULL_SH(iio_event_all, static struct attribute *sca3000_event_attributes[] = { &iio_event_attr_free_fall.dev_attr.attr, - &iio_event_attr_accel_x_high.dev_attr.attr, - &iio_event_attr_accel_y_high.dev_attr.attr, - &iio_event_attr_accel_z_high.dev_attr.attr, + &iio_event_attr_accel_x_mag_either_rising_en.dev_attr.attr, + &iio_event_attr_accel_y_mag_either_rising_en.dev_attr.attr, + &iio_event_attr_accel_z_mag_either_rising_en.dev_attr.attr, &iio_event_attr_ring_50_full.dev_attr.attr, &iio_event_attr_ring_75_full.dev_attr.attr, + &iio_dev_attr_accel_x_mag_either_rising_value.dev_attr.attr, + &iio_dev_attr_accel_y_mag_either_rising_value.dev_attr.attr, + &iio_dev_attr_accel_z_mag_either_rising_value.dev_attr.attr, NULL, }; @@ -1325,7 +1338,7 @@ static int __devinit __sca3000_probe(struct spi_device *spi, if (ret < 0) goto error_free_dev; regdone = 1; - ret = iio_ring_buffer_register(st->indio_dev->ring); + ret = iio_ring_buffer_register(st->indio_dev->ring, 0); if (ret < 0) goto error_unregister_dev; if (spi->irq && gpio_is_valid(irq_to_gpio(spi->irq)) > 0) { @@ -1344,9 +1357,10 @@ static int __devinit __sca3000_probe(struct spi_device *spi, * is overkill. At very least a simpler registration method * might be worthwhile. */ - iio_add_event_to_list(iio_event_attr_accel_z_high.listel, - &st->indio_dev - ->interrupts[0]->ev_list); + iio_add_event_to_list( + iio_event_attr_accel_z_mag_either_rising_en.listel, + &st->indio_dev + ->interrupts[0]->ev_list); } sca3000_register_ring_funcs(st->indio_dev); ret = sca3000_clean_setup(st); @@ -1437,9 +1451,6 @@ static int sca3000_remove(struct spi_device *spi) SCA3000_VARIANT_PROBE(d01); static SCA3000_VARIANT_SPI_DRIVER(d01); -SCA3000_VARIANT_PROBE(d03); -static SCA3000_VARIANT_SPI_DRIVER(d03); - SCA3000_VARIANT_PROBE(e02); static SCA3000_VARIANT_SPI_DRIVER(e02); @@ -1449,9 +1460,6 @@ static SCA3000_VARIANT_SPI_DRIVER(e04); SCA3000_VARIANT_PROBE(e05); static SCA3000_VARIANT_SPI_DRIVER(e05); -SCA3000_VARIANT_PROBE(l01); -static SCA3000_VARIANT_SPI_DRIVER(l01); - static __init int sca3000_init(void) { int ret; @@ -1459,32 +1467,22 @@ static __init int sca3000_init(void) ret = spi_register_driver(&sca3000_d01_driver); if (ret) goto error_ret; - ret = spi_register_driver(&sca3000_d03_driver); - if (ret) - goto error_unreg_d01; ret = spi_register_driver(&sca3000_e02_driver); if (ret) - goto error_unreg_d03; + goto error_unreg_d01; ret = spi_register_driver(&sca3000_e04_driver); if (ret) goto error_unreg_e02; ret = spi_register_driver(&sca3000_e05_driver); if (ret) goto error_unreg_e04; - ret = spi_register_driver(&sca3000_l01_driver); - if (ret) - goto error_unreg_e05; return 0; -error_unreg_e05: - spi_unregister_driver(&sca3000_e05_driver); error_unreg_e04: spi_unregister_driver(&sca3000_e04_driver); error_unreg_e02: spi_unregister_driver(&sca3000_e02_driver); -error_unreg_d03: - spi_unregister_driver(&sca3000_d03_driver); error_unreg_d01: spi_unregister_driver(&sca3000_d01_driver); error_ret: @@ -1494,11 +1492,9 @@ error_ret: static __exit void sca3000_exit(void) { - spi_unregister_driver(&sca3000_l01_driver); spi_unregister_driver(&sca3000_e05_driver); spi_unregister_driver(&sca3000_e04_driver); spi_unregister_driver(&sca3000_e02_driver); - spi_unregister_driver(&sca3000_d03_driver); spi_unregister_driver(&sca3000_d01_driver); } diff --git a/drivers/staging/iio/accel/sca3000_ring.c b/drivers/staging/iio/accel/sca3000_ring.c index 40cbab2a6592..8e8c068d401b 100644 --- a/drivers/staging/iio/accel/sca3000_ring.c +++ b/drivers/staging/iio/accel/sca3000_ring.c @@ -186,11 +186,29 @@ static ssize_t sca3000_store_ring_bpse(struct device *dev, return ret ? ret : len; } -static IIO_CONST_ATTR(bpse_available, "8 11"); +static IIO_SCAN_EL_C(accel_x, 0, 0, 0, NULL); +static IIO_SCAN_EL_C(accel_y, 1, 0, 0, NULL); +static IIO_SCAN_EL_C(accel_z, 2, 0, 0, NULL); +static IIO_CONST_ATTR(accel_precision_available, "8 11"); +static IIO_DEVICE_ATTR(accel_precision, + S_IRUGO | S_IWUSR, + sca3000_show_ring_bpse, + sca3000_store_ring_bpse, + 0); + +static struct attribute *sca3000_scan_el_attrs[] = { + &iio_scan_el_accel_x.dev_attr.attr, + &iio_scan_el_accel_y.dev_attr.attr, + &iio_scan_el_accel_z.dev_attr.attr, + &iio_const_attr_accel_precision_available.dev_attr.attr, + &iio_dev_attr_accel_precision.dev_attr.attr, + NULL +}; -static IIO_DEV_ATTR_BPSE(S_IRUGO | S_IWUSR, - sca3000_show_ring_bpse, - sca3000_store_ring_bpse); +static struct attribute_group sca3000_scan_el_group = { + .attrs = sca3000_scan_el_attrs, + .name = "scan_elements", +}; /* * Ring buffer attributes @@ -198,17 +216,15 @@ static IIO_DEV_ATTR_BPSE(S_IRUGO | S_IWUSR, * only apply to the ring buffer. At all times full rate and accuracy * is available via direct reading from registers. */ -static struct attribute *iio_ring_attributes[] = { +static struct attribute *sca3000_ring_attributes[] = { &dev_attr_length.attr, &dev_attr_bps.attr, &dev_attr_ring_enable.attr, - &iio_dev_attr_bpse.dev_attr.attr, - &iio_const_attr_bpse_available.dev_attr.attr, NULL, }; static struct attribute_group sca3000_ring_attr = { - .attrs = iio_ring_attributes, + .attrs = sca3000_ring_attributes, }; static const struct attribute_group *sca3000_ring_attr_groups[] = { @@ -228,7 +244,7 @@ static struct iio_ring_buffer *sca3000_rb_allocate(struct iio_dev *indio_dev) ring = kzalloc(sizeof *ring, GFP_KERNEL); if (!ring) - return 0; + return NULL; ring->private = indio_dev; buf = &ring->buf; iio_ring_buffer_init(buf, indio_dev); @@ -248,6 +264,7 @@ static inline void sca3000_rb_free(struct iio_ring_buffer *r) int sca3000_configure_ring(struct iio_dev *indio_dev) { + indio_dev->scan_el_attrs = &sca3000_scan_el_group; indio_dev->ring = sca3000_rb_allocate(indio_dev); if (indio_dev->ring == NULL) return -ENOMEM; |