Staging: iio: adis16220 vibration sensor driver

Signed-off-by: Barry Song <Barry.Song@analog.com>
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/iio/accel/Kconfig

@@ -12,6 +12,13 @@ config ADIS16209
          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

drivers/staging/iio/accel/Makefile

@@ -5,6 +5,9 @@ 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

drivers/staging/iio/accel/accel.h

@@ -2,6 +2,9 @@
 #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)
 
@@ -20,6 +23,9 @@
 #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_raw, S_IRUGO, _show, NULL, _addr)
 

drivers/staging/iio/accel/adis16220.h

+#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 bin_attribute            accel_bin;
+	struct bin_attribute            adc1_bin;
+	struct bin_attribute            adc2_bin;
+	struct mutex			buf_lock;
+};
+
+#endif /* SPI_ADIS16220_H_ */