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03c31d332f
nuttx/arch/arm/include/cxd56xx/scu.h
Xiang Xiao 03c31d332f arch/arm: Remove FAR and CODE from chip folder(1) 
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
2022-05-03 16:50:52 +03:00

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/****************************************************************************
* arch/arm/include/cxd56xx/scu.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __ARCH_ARM_INCLUDE_CXD56XX_SCU_H
#define __ARCH_ARM_INCLUDE_CXD56XX_SCU_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <stdint.h>
#include <stdbool.h>
#include <nuttx/fs/ioctl.h>
/****************************************************************************
* Pre-processor Prototypes
****************************************************************************/
#define _SCUIOCBASE (0xa000)
#define _SCUIOCVALID(c) (_IOC_TYPE(c)==_SCUIOCBASE)
#define _SCUIOC(nr) _IOC(_SCUIOCBASE,nr)
/* Set FIFO size used by sequencer
*
* uint16_t FIFO size in bytes
* return ioctl return value provides success/failure indication
*/
#define SCUIOC_SETFIFO _SCUIOC(0x0001)
/* Free FIFO used by sequencer
*
* param: none
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_FREEFIFO _SCUIOC(0x0002)
/* Set sequencer sampling rate
*
* param: uint8_t: sampling rate
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETSAMPLE _SCUIOC(0x0003)
/* Enable/Disable sign conversion preprocessing
*
* param: unsigned long: 0 = disable, 1 = enable
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETSIGNCONV _SCUIOC(0x0004)
/* Set offset/gain adjustment parameter
*
* param: Pointer to struct adjust_xyz_s.
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETOGADJUST _SCUIOC(0x0005)
/* Clear offset/gain adjustment parameter
*
* param: none
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_CLROGADJUST _SCUIOC(0x0006)
/* Set IIR filter coefficiencies
*
* param: Pointer to struct math_filter_s
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETFILTER _SCUIOC(0x0007)
/* Set event notifier parameters
*
* Set event notifier. This command must use with IIR filter, so it will be
* error when no filter set by SCUIOC_SETFILTER.
*
* param: Pointer to struct scuev_notify_s
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETNOTIFY _SCUIOC(0x0008)
/* Set elements per sample
*
* SCU can be treat 3 axis sample data as 1 or 2 axis data. For example,
* user can be used to detect via event notifier, about the board is
* tilting, by X and Y axis data from accelerometer.
* This setting will be affected for IIR Filter and event notifier.
*
* param: unsigned long: 1 - 3
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETELEMENTS _SCUIOC(0x0009)
/* Set decimation parameters (Decimator only)
*
* param: Pointer to struct decimation_s
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETDECIMATION _SCUIOC(0x000a)
/* Set FIFO sample data watermark
*
* param: Pointer of struct scufifo_wm_s
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETWATERMARK _SCUIOC(0x000b)
/* Start sequencer
*
* param: None
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_START _SCUIOC(0x0010)
/* Stop sequencer
*
* param: None
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_STOP _SCUIOC(0x0011)
/* Set FIFO overwrite mode
*
* param: unsigned long: 0 = overwrite disable, 1 = overwrite enable
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_SETFIFOMODE _SCUIOC(0x0012)
/* Delete FIFO data
*
* param: uint16_t delete size
* return: ioctl return value provides success/failure indication
*/
#define SCUIOC_DELFIFODATA _SCUIOC(0x0013)
#define SCU_BUS_SPI 1 /* SPI bus */
#define SCU_BUS_I2C0 2 /* I2C0 bus */
#define SCU_BUS_I2C1 3 /* I2C1 bus */
#define SCU_BUS_LPADC0 0x10 /* LPADC0 */
#define SCU_BUS_LPADC1 0x11 /* LPADC1 */
#define SCU_BUS_LPADC2 0x12 /* LPADC2 */
#define SCU_BUS_LPADC3 0x13 /* LPADC3 */
#define SCU_BUS_HPADC0 0x14 /* HPADC1 */
#define SCU_BUS_HPADC1 0x15 /* HPADC2 */
/* Send 1 byte instruction */
#define SCU_INST_SEND(val) ((val) & 0xff)
/* Receive n byte instruction (n: 1 - 8) */
#define SCU_INST_RECV(n) ((1 << 8) | (((n) - 1) & 0x7) << 12)
#define SCU_INST_TERM (1 << 11)
#define SCU_INST_RESTART (1 << 10)
#define SCU_INST_STOP (1 << 9)
/* Indicate this instruction is last */
#define SCU_INST_LAST (SCU_INST_TERM|SCU_INST_STOP)
/* Sequencer types */
#define SEQ_TYPE_NORMAL 0 /* Normal sequencer */
#define SEQ_TYPE_DECI 1 /* Decimator */
/* Event control */
#define SCU_EV_RISE_EN (1 << 31) /* Rise event enable */
#define SCU_EV_FALL_EN (1 << 30) /* Fall event enable */
#define SCU_EV_OUT8BITS (1 << 29) /* Output only upper 8 bits */
#define SCU_EV_OUTSHIFT 16
#define SCU_EV_OUTMASK (3 << SCU_EV_OUTSHIFT)
#define SCU_EV_OUTALWAYS (0 << SCU_EV_OUTSHIFT) /* Always output to FIFO */
#define SCU_EV_OUTSTART (1 << SCU_EV_OUTSHIFT) /* Output start after event occurred */
#define SCU_EV_OUTSTOP (2 << SCU_EV_OUTSHIFT) /* Output stop after event occurred */
#define SCU_EV_NOTOUT (3 << SCU_EV_OUTSHIFT) /* No output to FIFO */
#define SCU_EV_WRITESAMPLEMASK 0xfff
/* Output samples when event occurred */
#define SCU_EV_WRITESAMPLES(sample) ((sample) & SCU_EV_WRITESAMPLEMASK)
/* Event type flags */
#define SCU_EV_RISE (1) /* Rise (low to high) event occurred */
#define SCU_EV_FALL (2) /* Fall (high to low) event occurred */
/* Level adjustment (decimator only) */
#define SCU_LEVELADJ_X1 (0) /* Level adjustment x1 */
#define SCU_LEVELADJ_X2 (1) /* Level adjustment x2 */
#define SCU_LEVELADJ_X4 (2) /* Level adjustment x4 */
#define SCU_LEVELADJ_X8 (3) /* Level adjustment x8 */
/****************************************************************************
* Public Types
****************************************************************************/
/* IIR filter position
* details IIR filter can be set 2 filters on data path.
* image html scu_IIR_filter_path.png
*/
enum filter_pos_e
{
FILTER_POS_NONE = 0, /* Filter none */
FILTER_POS_AA, /* 2 for all */
FILTER_POS_FF, /* 2 for FIFO */
FILTER_POS_AF, /* 1 for all, 1 for FIFO */
FILTER_POS_EE, /* 2 for Event detector */
FILTER_POS_AE, /* 1 for all, 1 for Event detector */
FILTER_POS_FE, /* 1 for FIFO, 1 for Event detector */
};
/* Sample timestamp */
struct scutimestamp_s
{
uint32_t sec; /* Seconds */
uint16_t tick; /* Clock tick (based on 32768 Hz) */
};
/* IIR filter coefficiencies */
struct iir_coeff_s
{
uint32_t h; /* High 32 bit */
uint8_t l; /* Low 8 bit */
};
/* IIR filter setting */
struct iir_filter_s
{
uint8_t ishift; /* Input shift */
uint8_t oshift; /* Output shift */
struct iir_coeff_s coeff[5]; /* IIR filter coefficiencies */
};
/* Math Function IIR filter setting */
struct math_filter_s
{
enum filter_pos_e pos; /* Insert position identifier */
struct iir_filter_s filter[2]; /* IIR filter parameters */
};
/* Event configuration
*
* a threshold is rise/fall threshold for input data.
* When set this member for a rise in struct scuev_notify_s, counting data
* if higher than threshold, and a fall is vise-versa.
* a count0 is used for prevent chattering. a count1 is used for counting
* continuously input.
* When configured for a rise, SCU processing as follows:
*
* - Counting higher value than threshold coninuously
* - If counter reached to a count0, start actual couning
* - If input data fall less than threshold before reached to a count0,
* then stop and reset counts
* - If total count is reached to a count0 + a count1, then raise rise event
* - If count1 is zero, then notify when count reached to a count0
* immediately
* - If threshold or count0 is zero, configuration is ignored
*/
struct sensor_event_s
{
uint16_t threshold; /* Threshold */
uint16_t count0; /* Preventing counts */
uint16_t count1; /* Actual counts */
uint16_t delaysamples; /* Event notification delay in samples */
};
/* Arguments for event signal */
struct scuev_arg_s
{
struct scutimestamp_s ts; /* timestamp stored when event occurred. */
uint32_t type; /* Event type (SCU_EV_RISE or SCU_EV_FALL) */
};
/* Event notifier setting */
struct scuev_notify_s
{
int signo; /* Signal number (0 - 31, except system reserved) */
struct sensor_event_s rise; /* Rise threshold */
struct sensor_event_s fall; /* Fall threshold */
uint32_t ctrl; /* Event control */
struct scuev_arg_s *arg; /* Arguments for event raised */
};
/* Offset/gain adjustment parameter */
struct adjust_s
{
uint16_t offset; /* Offset value */
uint16_t gain; /* Gain value */
};
/* Offset/gain adjustment parameter for 3 axis */
struct adjust_xyz_s
{
struct adjust_s x; /* For X axis */
struct adjust_s y; /* For Y axis */
struct adjust_s z; /* For Z axis */
};
/* Decimation parameter */
struct decimation_s
{
uint8_t ratio; /* Decimation ratio (1 / (2 ^ ratio)), 0 - 9 */
uint8_t leveladj; /* Output data multiplier */
uint8_t forcethrough; /* Force through */
};
/* Watermark notification */
struct scufifo_wm_s
{
int signo; /* Signal number (0 - 31, except system reserved) */
/* Pointer to memory to be timestamp stored */
struct scutimestamp_s *ts;
/* Watermark value. SCU notifies when
* stored samples over watermark in FIFO.
* Valid value range: 1 - 65535
*/
uint16_t watermark;
};
struct seq_s; /* The sequencer object */
/* Open sequencer
*
* param [in] type : Sequencer type. Set one of the following definitions.
* - #SEQ_TYPE_NORMAL
* - #SEQ_TYPE_DECI
* param [in] bustype : Bustype. Set one of the foollowing definitions.
* - #SCU_BUS_I2C0
* - #SCU_BUS_I2C1
* - #SCU_BUS_SPI
*
* return: struct seq_s pointer is success. NULL is failure.
*/
struct seq_s *seq_open(int type, int bustype);
/* Close sequencer device
*
* param [in] seq : Sequencer instance
*/
void seq_close(struct seq_s *seq);
/* Read sequencer FIFO data
*
* param [in] seq : Sequencer instance
* param [in] fifoid : FIFO ID (decimator only)
* param [out] buffer : Pointer to data receive buffer
* param [in] length : Buffer length
*
* return : OK(0) is success. negative value is failure.
*/
int seq_read(struct seq_s *seq, int fifoid, char *buffer, int length);
/* Sequencer specific ioctl
*
* This API should be called from each sensor driver ioctl().
*
* param [in] seq : Sequencer instance
* param [in] fifoid : FIFO ID (decimator only)
* param [in] cmd : ioctl commands (SCUIOC_*).
* param [in,out] arg : Argument for each commands
*
* see #scu_ioctl
*
* return: OK(0) is success. negative value is failure.
*/
int seq_ioctl(struct seq_s *seq, int fifoid, int cmd, unsigned long arg);
/* Set cyclic sequencer instruction
*
* param [in] seq : Sequencer instance
* param [in] inst : Pointer to instruction array
* param [in] nr_insts : Number of instructions
*
* return OK(0) is success. negative value is failure.
*/
int seq_setinstruction(struct seq_s *seq, const uint16_t *inst,
uint16_t nr_insts);
/* Set sample data format
*
* param [in] seq : Sequencer instance
* param [in] sample : Bytes per sample
* param [in] offset : Start offset of sampling data
* param [in] elemsize : Bytes of 1 element in sample
* param [in] swapbyte : Enable/Disable byte swapping
*
* return OK(0) is success. negative value is failure.
*/
void seq_setsample(struct seq_s *seq, uint8_t sample, uint8_t offset,
uint8_t elemsize, bool swapbyte);
/* Set slave ID or address
*
* param [in] seq : An instance of sequencer
* param [in] slave_addr : In SPI, slave select ID. In I2C, bus address.
*/
void seq_setaddress(struct seq_s *seq, uint32_t slave_addr);
/* SPI data transfer via sequencer.
*
* This function use 'oneshot' feature on SCU. So user unnecessary to specify
* any opened sequencer.
* This function useful for accessing register directly.
*
* param [in] slavesel : Slave select
* param [in] inst : Sequencer instruction
* param [in] nr_insts : Number of instructions
* param [out] buffer : Pointer to receive buffer, if no need to receive,
* then NULL.
* param [in] len : buffer length (ignored when buffer is NULL)
*
* return OK(0) is success. negative value is failure.
*/
int scu_spitransfer(int slavesel, uint16_t *inst, uint32_t nr_insts,
uint8_t *buffer, int len);
/* I2C data transfer via sequencer
*
* This function use 'oneshot' feature on SCU. So user unnecessary to
* specify any opened sequencer.
* This function useful for accessing register directly.
*
* param [in] port : I2C port (0 or 1)
* param [in] slave : Slave address
* param [in] inst : Sequencer instruction
* param [in] nr_insts : Number of instructions
* param [out] buffer : Pointer to receive buffer, if no need to receive,
* then NULL.
* param [in] len : buffer length (ignored when buffer is NULL)
*
* return OK(0) is success. negative value is failure.
*/
int scu_i2ctransfer(int port, int slave, uint16_t *inst, uint32_t nr_insts,
uint8_t *buffer, int len);
/* Initialize SCU
*
* warning: This API called from board_app_initialize().
* Do not call this API from each sensor drivers.
*/
void scu_initialize(void);
/* Uninitialize SCU
*
* warning: This API called from board_app_initialize().
* Do not call this API from each sensor drivers.
*/
void scu_uninitialize(void);
#endif /* __ARCH_ARM_INCLUDE_CXD56XX_SCU_H */
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