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/drivers/staging/iio/accel/adis16240.h

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C Header | 196 lines | 108 code | 24 blank | 64 comment | 0 complexity | d703f05ef3298d7686540d6b03fcbc33 MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
  1#ifndef SPI_ADIS16240_H_
  2#define SPI_ADIS16240_H_
  3
  4#define ADIS16240_STARTUP_DELAY	220 /* ms */
  5
  6#define ADIS16240_READ_REG(a)    a
  7#define ADIS16240_WRITE_REG(a) ((a) | 0x80)
  8
  9/* Flash memory write count */
 10#define ADIS16240_FLASH_CNT      0x00
 11/* Output, power supply */
 12#define ADIS16240_SUPPLY_OUT     0x02
 13/* Output, x-axis accelerometer */
 14#define ADIS16240_XACCL_OUT      0x04
 15/* Output, y-axis accelerometer */
 16#define ADIS16240_YACCL_OUT      0x06
 17/* Output, z-axis accelerometer */
 18#define ADIS16240_ZACCL_OUT      0x08
 19/* Output, auxiliary ADC input */
 20#define ADIS16240_AUX_ADC        0x0A
 21/* Output, temperature */
 22#define ADIS16240_TEMP_OUT       0x0C
 23/* Output, x-axis acceleration peak */
 24#define ADIS16240_XPEAK_OUT      0x0E
 25/* Output, y-axis acceleration peak */
 26#define ADIS16240_YPEAK_OUT      0x10
 27/* Output, z-axis acceleration peak */
 28#define ADIS16240_ZPEAK_OUT      0x12
 29/* Output, sum-of-squares acceleration peak */
 30#define ADIS16240_XYZPEAK_OUT    0x14
 31/* Output, Capture Buffer 1, X and Y acceleration */
 32#define ADIS16240_CAPT_BUF1      0x16
 33/* Output, Capture Buffer 2, Z acceleration */
 34#define ADIS16240_CAPT_BUF2      0x18
 35/* Diagnostic, error flags */
 36#define ADIS16240_DIAG_STAT      0x1A
 37/* Diagnostic, event counter */
 38#define ADIS16240_EVNT_CNTR      0x1C
 39/* Diagnostic, check sum value from firmware test */
 40#define ADIS16240_CHK_SUM        0x1E
 41/* Calibration, x-axis acceleration offset adjustment */
 42#define ADIS16240_XACCL_OFF      0x20
 43/* Calibration, y-axis acceleration offset adjustment */
 44#define ADIS16240_YACCL_OFF      0x22
 45/* Calibration, z-axis acceleration offset adjustment */
 46#define ADIS16240_ZACCL_OFF      0x24
 47/* Clock, hour and minute */
 48#define ADIS16240_CLK_TIME       0x2E
 49/* Clock, month and day */
 50#define ADIS16240_CLK_DATE       0x30
 51/* Clock, year */
 52#define ADIS16240_CLK_YEAR       0x32
 53/* Wake-up setting, hour and minute */
 54#define ADIS16240_WAKE_TIME      0x34
 55/* Wake-up setting, month and day */
 56#define ADIS16240_WAKE_DATE      0x36
 57/* Alarm 1 amplitude threshold */
 58#define ADIS16240_ALM_MAG1       0x38
 59/* Alarm 2 amplitude threshold */
 60#define ADIS16240_ALM_MAG2       0x3A
 61/* Alarm control */
 62#define ADIS16240_ALM_CTRL       0x3C
 63/* Capture, external trigger control */
 64#define ADIS16240_XTRIG_CTRL     0x3E
 65/* Capture, address pointer */
 66#define ADIS16240_CAPT_PNTR      0x40
 67/* Capture, configuration and control */
 68#define ADIS16240_CAPT_CTRL      0x42
 69/* General-purpose digital input/output control */
 70#define ADIS16240_GPIO_CTRL      0x44
 71/* Miscellaneous control */
 72#define ADIS16240_MSC_CTRL       0x46
 73/* Internal sample period (rate) control */
 74#define ADIS16240_SMPL_PRD       0x48
 75/* System command */
 76#define ADIS16240_GLOB_CMD       0x4A
 77
 78#define ADIS16240_OUTPUTS        6
 79
 80/* MSC_CTRL */
 81/* Enables sum-of-squares output (XYZPEAK_OUT) */
 82#define ADIS16240_MSC_CTRL_XYZPEAK_OUT_EN	(1 << 15)
 83/* Enables peak tracking output (XPEAK_OUT, YPEAK_OUT, and ZPEAK_OUT) */
 84#define ADIS16240_MSC_CTRL_X_Y_ZPEAK_OUT_EN	(1 << 14)
 85/* Self-test enable: 1 = apply electrostatic force, 0 = disabled */
 86#define ADIS16240_MSC_CTRL_SELF_TEST_EN	        (1 << 8)
 87/* Data-ready enable: 1 = enabled, 0 = disabled */
 88#define ADIS16240_MSC_CTRL_DATA_RDY_EN	        (1 << 2)
 89/* Data-ready polarity: 1 = active high, 0 = active low */
 90#define ADIS16240_MSC_CTRL_ACTIVE_HIGH	        (1 << 1)
 91/* Data-ready line selection: 1 = DIO2, 0 = DIO1 */
 92#define ADIS16240_MSC_CTRL_DATA_RDY_DIO2	(1 << 0)
 93
 94/* DIAG_STAT */
 95/* Alarm 2 status: 1 = alarm active, 0 = alarm inactive */
 96#define ADIS16240_DIAG_STAT_ALARM2      (1<<9)
 97/* Alarm 1 status: 1 = alarm active, 0 = alarm inactive */
 98#define ADIS16240_DIAG_STAT_ALARM1      (1<<8)
 99/* Capture buffer full: 1 = capture buffer is full */
100#define ADIS16240_DIAG_STAT_CPT_BUF_FUL (1<<7)
101/* Flash test, checksum flag: 1 = mismatch, 0 = match */
102#define ADIS16240_DIAG_STAT_CHKSUM      (1<<6)
103/* Power-on, self-test flag: 1 = failure, 0 = pass */
104#define ADIS16240_DIAG_STAT_PWRON_FAIL  (1<<5)
105/* Power-on self-test: 1 = in-progress, 0 = complete */
106#define ADIS16240_DIAG_STAT_PWRON_BUSY  (1<<4)
107/* SPI communications failure */
108#define ADIS16240_DIAG_STAT_SPI_FAIL	(1<<3)
109/* Flash update failure */
110#define ADIS16240_DIAG_STAT_FLASH_UPT	(1<<2)
111/* Power supply above 3.625 V */
112#define ADIS16240_DIAG_STAT_POWER_HIGH	(1<<1)
113 /* Power supply below 3.15 V */
114#define ADIS16240_DIAG_STAT_POWER_LOW	(1<<0)
115
116/* GLOB_CMD */
117#define ADIS16240_GLOB_CMD_RESUME	(1<<8)
118#define ADIS16240_GLOB_CMD_SW_RESET	(1<<7)
119#define ADIS16240_GLOB_CMD_STANDBY	(1<<2)
120
121#define ADIS16240_ERROR_ACTIVE          (1<<14)
122
123#define ADIS16240_MAX_TX 24
124#define ADIS16240_MAX_RX 24
125
126/**
127 * struct adis16240_state - device instance specific data
128 * @us:			actual spi_device
129 * @trig:		data ready trigger registered with iio
130 * @tx:			transmit buffer
131 * @rx:			receive buffer
132 * @buf_lock:		mutex to protect tx and rx
133 **/
134struct adis16240_state {
135	struct spi_device	*us;
136	struct iio_trigger	*trig;
137	struct mutex		buf_lock;
138	u8			tx[ADIS16240_MAX_TX] ____cacheline_aligned;
139	u8			rx[ADIS16240_MAX_RX];
140};
141
142int adis16240_set_irq(struct iio_dev *indio_dev, bool enable);
143
144/* At the moment triggers are only used for ring buffer
145 * filling. This may change!
146 */
147
148#define ADIS16240_SCAN_SUPPLY	0
149#define ADIS16240_SCAN_ACC_X	1
150#define ADIS16240_SCAN_ACC_Y	2
151#define ADIS16240_SCAN_ACC_Z	3
152#define ADIS16240_SCAN_AUX_ADC	4
153#define ADIS16240_SCAN_TEMP	5
154
155#ifdef CONFIG_IIO_RING_BUFFER
156void adis16240_remove_trigger(struct iio_dev *indio_dev);
157int adis16240_probe_trigger(struct iio_dev *indio_dev);
158
159ssize_t adis16240_read_data_from_ring(struct device *dev,
160				      struct device_attribute *attr,
161				      char *buf);
162
163
164int adis16240_configure_ring(struct iio_dev *indio_dev);
165void adis16240_unconfigure_ring(struct iio_dev *indio_dev);
166
167#else /* CONFIG_IIO_RING_BUFFER */
168
169static inline void adis16240_remove_trigger(struct iio_dev *indio_dev)
170{
171}
172
173static inline int adis16240_probe_trigger(struct iio_dev *indio_dev)
174{
175	return 0;
176}
177
178static inline ssize_t
179adis16240_read_data_from_ring(struct device *dev,
180			      struct device_attribute *attr,
181			      char *buf)
182{
183	return 0;
184}
185
186static int adis16240_configure_ring(struct iio_dev *indio_dev)
187{
188	return 0;
189}
190
191static inline void adis16240_unconfigure_ring(struct iio_dev *indio_dev)
192{
193}
194
195#endif /* CONFIG_IIO_RING_BUFFER */
196#endif /* SPI_ADIS16240_H_ */