[linux-block.git] / drivers / staging / iio / accel / adis16204.h

#ifndef SPI_ADIS16204_H_
#define SPI_ADIS16204_H_

#define ADIS16204_STARTUP_DELAY	220 /* ms */

#define ADIS16204_READ_REG(a)    a
#define ADIS16204_WRITE_REG(a) ((a) | 0x80)

#define ADIS16204_FLASH_CNT      0x00 /* Flash memory write count */
#define ADIS16204_SUPPLY_OUT     0x02 /* Output, power supply */
#define ADIS16204_XACCL_OUT      0x04 /* Output, x-axis accelerometer */
#define ADIS16204_YACCL_OUT      0x06 /* Output, y-axis accelerometer */
#define ADIS16204_AUX_ADC        0x08 /* Output, auxiliary ADC input */
#define ADIS16204_TEMP_OUT       0x0A /* Output, temperature */
#define ADIS16204_X_PEAK_OUT     0x0C /* Twos complement */
#define ADIS16204_Y_PEAK_OUT     0x0E /* Twos complement */
#define ADIS16204_XACCL_NULL     0x10 /* Calibration, x-axis acceleration offset null */
#define ADIS16204_YACCL_NULL     0x12 /* Calibration, y-axis acceleration offset null */
#define ADIS16204_XACCL_SCALE    0x14 /* X-axis scale factor calibration register */
#define ADIS16204_YACCL_SCALE    0x16 /* Y-axis scale factor calibration register */
#define ADIS16204_XY_RSS_OUT     0x18 /* XY combined acceleration (RSS) */
#define ADIS16204_XY_PEAK_OUT    0x1A /* Peak, XY combined output (RSS) */
#define ADIS16204_CAP_BUF_1      0x1C /* Capture buffer output register 1 */
#define ADIS16204_CAP_BUF_2      0x1E /* Capture buffer output register 2 */
#define ADIS16204_ALM_MAG1       0x20 /* Alarm 1 amplitude threshold */
#define ADIS16204_ALM_MAG2       0x22 /* Alarm 2 amplitude threshold */
#define ADIS16204_ALM_CTRL       0x28 /* Alarm control */
#define ADIS16204_CAPT_PNTR      0x2A /* Capture register address pointer */
#define ADIS16204_AUX_DAC        0x30 /* Auxiliary DAC data */
#define ADIS16204_GPIO_CTRL      0x32 /* General-purpose digital input/output control */
#define ADIS16204_MSC_CTRL       0x34 /* Miscellaneous control */
#define ADIS16204_SMPL_PRD       0x36 /* Internal sample period (rate) control */
#define ADIS16204_AVG_CNT        0x38 /* Operation, filter configuration */
#define ADIS16204_SLP_CNT        0x3A /* Operation, sleep mode control */
#define ADIS16204_DIAG_STAT      0x3C /* Diagnostics, system status register */
#define ADIS16204_GLOB_CMD       0x3E /* Operation, system command register */

#define ADIS16204_OUTPUTS        5

/* MSC_CTRL */
#define ADIS16204_MSC_CTRL_PWRUP_SELF_TEST	(1 << 10) /* Self-test at power-on: 1 = disabled, 0 = enabled */
#define ADIS16204_MSC_CTRL_SELF_TEST_EN	        (1 << 8)  /* Self-test enable */
#define ADIS16204_MSC_CTRL_DATA_RDY_EN	        (1 << 2)  /* Data-ready enable: 1 = enabled, 0 = disabled */
#define ADIS16204_MSC_CTRL_ACTIVE_HIGH	        (1 << 1)  /* Data-ready polarity: 1 = active high, 0 = active low */
#define ADIS16204_MSC_CTRL_DATA_RDY_DIO2	(1 << 0)  /* Data-ready line selection: 1 = DIO2, 0 = DIO1 */

/* DIAG_STAT */
#define ADIS16204_DIAG_STAT_ALARM2        (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16204_DIAG_STAT_ALARM1        (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
#define ADIS16204_DIAG_STAT_SELFTEST_FAIL (1<<5) /* Self-test diagnostic error flag: 1 = error condition,
						0 = normal operation */
#define ADIS16204_DIAG_STAT_SPI_FAIL	  (1<<3) /* SPI communications failure */
#define ADIS16204_DIAG_STAT_FLASH_UPT	  (1<<2) /* Flash update failure */
#define ADIS16204_DIAG_STAT_POWER_HIGH	  (1<<1) /* Power supply above 3.625 V */
#define ADIS16204_DIAG_STAT_POWER_LOW	  (1<<0) /* Power supply below 2.975 V */

/* GLOB_CMD */
#define ADIS16204_GLOB_CMD_SW_RESET	(1<<7)
#define ADIS16204_GLOB_CMD_CLEAR_STAT	(1<<4)
#define ADIS16204_GLOB_CMD_FACTORY_CAL	(1<<1)

#define ADIS16204_MAX_TX 24
#define ADIS16204_MAX_RX 24

#define ADIS16204_ERROR_ACTIVE          (1<<14)

/**
 * struct adis16204_state - device instance specific data
 * @us:			actual spi_device
 * @work_trigger_to_ring: bh for triggered event handling
 * @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:			receive buffer
 * @buf_lock:		mutex to protect tx and rx
 **/
struct adis16204_state {
	struct spi_device		*us;
	struct work_struct		work_trigger_to_ring;
	s64				last_timestamp;
	struct iio_dev			*indio_dev;
	struct iio_trigger		*trig;
	u8				*tx;
	u8				*rx;
	struct mutex			buf_lock;
};

int adis16204_set_irq(struct device *dev, bool enable);

#ifdef CONFIG_IIO_RING_BUFFER
enum adis16204_scan {
	ADIS16204_SCAN_SUPPLY,
	ADIS16204_SCAN_ACC_X,
	ADIS16204_SCAN_ACC_Y,
	ADIS16204_SCAN_AUX_ADC,
	ADIS16204_SCAN_TEMP,
};

void adis16204_remove_trigger(struct iio_dev *indio_dev);
int adis16204_probe_trigger(struct iio_dev *indio_dev);

ssize_t adis16204_read_data_from_ring(struct device *dev,
				      struct device_attribute *attr,
				      char *buf);

int adis16204_configure_ring(struct iio_dev *indio_dev);
void adis16204_unconfigure_ring(struct iio_dev *indio_dev);

int adis16204_initialize_ring(struct iio_ring_buffer *ring);
void adis16204_uninitialize_ring(struct iio_ring_buffer *ring);
#else /* CONFIG_IIO_RING_BUFFER */

static inline void adis16204_remove_trigger(struct iio_dev *indio_dev)
{
}

static inline int adis16204_probe_trigger(struct iio_dev *indio_dev)
{
	return 0;
}

static inline ssize_t
adis16204_read_data_from_ring(struct device *dev,
			      struct device_attribute *attr,
			      char *buf)
{
	return 0;
}

static int adis16204_configure_ring(struct iio_dev *indio_dev)
{
	return 0;
}

static inline void adis16204_unconfigure_ring(struct iio_dev *indio_dev)
{
}

static inline int adis16204_initialize_ring(struct iio_ring_buffer *ring)
{
	return 0;
}

static inline void adis16204_uninitialize_ring(struct iio_ring_buffer *ring)
{
}

#endif /* CONFIG_IIO_RING_BUFFER */
#endif /* SPI_ADIS16204_H_ */
Commit	Line	Data
bb6f19ea BS	1	#ifndef SPI_ADIS16204_H_
	2	#define SPI_ADIS16204_H_
	3
	4	#define ADIS16204_STARTUP_DELAY 220 /* ms */
	5
	6	#define ADIS16204_READ_REG(a) a
	7	#define ADIS16204_WRITE_REG(a) ((a) \| 0x80)
	8
	9	#define ADIS16204_FLASH_CNT 0x00 /* Flash memory write count */
	10	#define ADIS16204_SUPPLY_OUT 0x02 /* Output, power supply */
	11	#define ADIS16204_XACCL_OUT 0x04 /* Output, x-axis accelerometer */
	12	#define ADIS16204_YACCL_OUT 0x06 /* Output, y-axis accelerometer */
	13	#define ADIS16204_AUX_ADC 0x08 /* Output, auxiliary ADC input */
	14	#define ADIS16204_TEMP_OUT 0x0A /* Output, temperature */
	15	#define ADIS16204_X_PEAK_OUT 0x0C /* Twos complement */
	16	#define ADIS16204_Y_PEAK_OUT 0x0E /* Twos complement */
	17	#define ADIS16204_XACCL_NULL 0x10 /* Calibration, x-axis acceleration offset null */
	18	#define ADIS16204_YACCL_NULL 0x12 /* Calibration, y-axis acceleration offset null */
	19	#define ADIS16204_XACCL_SCALE 0x14 /* X-axis scale factor calibration register */
	20	#define ADIS16204_YACCL_SCALE 0x16 /* Y-axis scale factor calibration register */
	21	#define ADIS16204_XY_RSS_OUT 0x18 /* XY combined acceleration (RSS) */
	22	#define ADIS16204_XY_PEAK_OUT 0x1A /* Peak, XY combined output (RSS) */
	23	#define ADIS16204_CAP_BUF_1 0x1C /* Capture buffer output register 1 */
	24	#define ADIS16204_CAP_BUF_2 0x1E /* Capture buffer output register 2 */
	25	#define ADIS16204_ALM_MAG1 0x20 /* Alarm 1 amplitude threshold */
	26	#define ADIS16204_ALM_MAG2 0x22 /* Alarm 2 amplitude threshold */
	27	#define ADIS16204_ALM_CTRL 0x28 /* Alarm control */
	28	#define ADIS16204_CAPT_PNTR 0x2A /* Capture register address pointer */
	29	#define ADIS16204_AUX_DAC 0x30 /* Auxiliary DAC data */
	30	#define ADIS16204_GPIO_CTRL 0x32 /* General-purpose digital input/output control */
	31	#define ADIS16204_MSC_CTRL 0x34 /* Miscellaneous control */
	32	#define ADIS16204_SMPL_PRD 0x36 /* Internal sample period (rate) control */
	33	#define ADIS16204_AVG_CNT 0x38 /* Operation, filter configuration */
	34	#define ADIS16204_SLP_CNT 0x3A /* Operation, sleep mode control */
	35	#define ADIS16204_DIAG_STAT 0x3C /* Diagnostics, system status register */
	36	#define ADIS16204_GLOB_CMD 0x3E /* Operation, system command register */
	37
	38	#define ADIS16204_OUTPUTS 5
	39
	40	/* MSC_CTRL */
	41	#define ADIS16204_MSC_CTRL_PWRUP_SELF_TEST (1 << 10) /* Self-test at power-on: 1 = disabled, 0 = enabled */
	42	#define ADIS16204_MSC_CTRL_SELF_TEST_EN (1 << 8) /* Self-test enable */
	43	#define ADIS16204_MSC_CTRL_DATA_RDY_EN (1 << 2) /* Data-ready enable: 1 = enabled, 0 = disabled */
	44	#define ADIS16204_MSC_CTRL_ACTIVE_HIGH (1 << 1) /* Data-ready polarity: 1 = active high, 0 = active low */
	45	#define ADIS16204_MSC_CTRL_DATA_RDY_DIO2 (1 << 0) /* Data-ready line selection: 1 = DIO2, 0 = DIO1 */
	46
	47	/* DIAG_STAT */
	48	#define ADIS16204_DIAG_STAT_ALARM2 (1<<9) /* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
	49	#define ADIS16204_DIAG_STAT_ALARM1 (1<<8) /* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
	50	#define ADIS16204_DIAG_STAT_SELFTEST_FAIL (1<<5) /* Self-test diagnostic error flag: 1 = error condition,
	51	0 = normal operation */
	52	#define ADIS16204_DIAG_STAT_SPI_FAIL (1<<3) /* SPI communications failure */
	53	#define ADIS16204_DIAG_STAT_FLASH_UPT (1<<2) /* Flash update failure */
	54	#define ADIS16204_DIAG_STAT_POWER_HIGH (1<<1) /* Power supply above 3.625 V */
	55	#define ADIS16204_DIAG_STAT_POWER_LOW (1<<0) /* Power supply below 2.975 V */
	56
	57	/* GLOB_CMD */
	58	#define ADIS16204_GLOB_CMD_SW_RESET (1<<7)
	59	#define ADIS16204_GLOB_CMD_CLEAR_STAT (1<<4)
	60	#define ADIS16204_GLOB_CMD_FACTORY_CAL (1<<1)
	61
	62	#define ADIS16204_MAX_TX 24
	63	#define ADIS16204_MAX_RX 24
	64
65	#define ADIS16204_ERROR_ACTIVE (1<<14)
66
67	/**
68	* struct adis16204_state - device instance specific data
69	* @us: actual spi_device
70	* @work_trigger_to_ring: bh for triggered event handling
71	* @inter: used to check if new interrupt has been triggered
72	* @last_timestamp: passing timestamp from th to bh of interrupt handler
73	* @indio_dev: industrial I/O device structure
74	* @trig: data ready trigger registered with iio
75	* @tx: transmit buffer
25985edc	76	* @rx: receive buffer
bb6f19ea BS	77	* @buf_lock: mutex to protect tx and rx
	78	**/
	79	struct adis16204_state {
	80	struct spi_device *us;
	81	struct work_struct work_trigger_to_ring;
	82	s64 last_timestamp;
	83	struct iio_dev *indio_dev;
	84	struct iio_trigger *trig;
	85	u8 *tx;
	86	u8 *rx;
	87	struct mutex buf_lock;
	88	};
	89
	90	int adis16204_set_irq(struct device *dev, bool enable);
	91
	92	#ifdef CONFIG_IIO_RING_BUFFER
	93	enum adis16204_scan {
	94	ADIS16204_SCAN_SUPPLY,
	95	ADIS16204_SCAN_ACC_X,
	96	ADIS16204_SCAN_ACC_Y,
	97	ADIS16204_SCAN_AUX_ADC,
	98	ADIS16204_SCAN_TEMP,
	99	};
	100
	101	void adis16204_remove_trigger(struct iio_dev *indio_dev);
	102	int adis16204_probe_trigger(struct iio_dev *indio_dev);
	103
	104	ssize_t adis16204_read_data_from_ring(struct device *dev,
	105	struct device_attribute *attr,
	106	char *buf);
	107
	108	int adis16204_configure_ring(struct iio_dev *indio_dev);
	109	void adis16204_unconfigure_ring(struct iio_dev *indio_dev);
	110
	111	int adis16204_initialize_ring(struct iio_ring_buffer *ring);
	112	void adis16204_uninitialize_ring(struct iio_ring_buffer *ring);
	113	#else /* CONFIG_IIO_RING_BUFFER */
	114
	115	static inline void adis16204_remove_trigger(struct iio_dev *indio_dev)
	116	{
	117	}
	118
	119	static inline int adis16204_probe_trigger(struct iio_dev *indio_dev)
	120	{
	121	return 0;
	122	}
	123
	124	static inline ssize_t
	125	adis16204_read_data_from_ring(struct device *dev,
	126	struct device_attribute *attr,
	127	char *buf)
	128	{
	129	return 0;
	130	}
	131
	132	static int adis16204_configure_ring(struct iio_dev *indio_dev)
	133	{
	134	return 0;
	135	}
	136
	137	static inline void adis16204_unconfigure_ring(struct iio_dev *indio_dev)
	138	{
	139	}
	140
141	static inline int adis16204_initialize_ring(struct iio_ring_buffer *ring)
142	{
143	return 0;
144	}
145
146	static inline void adis16204_uninitialize_ring(struct iio_ring_buffer *ring)
147	{
148	}
149
150	#endif /* CONFIG_IIO_RING_BUFFER */
151	#endif /* SPI_ADIS16204_H_ */