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apache / nuttx / b87804c2ba112705966b51a76878e4c64a6f2eb8 / . / boards / arm / cxd56xx / drivers / sensors / rpr0521rs_scu.c
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/****************************************************************************
* boards/arm/cxd56xx/drivers/sensors/rpr0521rs_scu.c
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdlib.h>
#include <stdio.h>
#include <fixedmath.h>
#include <assert.h>
#include <errno.h>
#include <debug.h>
#include <arch/types.h>
#include <nuttx/kmalloc.h>
#include <nuttx/fs/fs.h>
#include <nuttx/i2c/i2c_master.h>
#include <nuttx/sensors/rpr0521rs.h>
#include <nuttx/irq.h>
#include <arch/chip/scu.h>
#if defined(CONFIG_I2C) && defined(CONFIG_SENSORS_RPR0521RS_SCU)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define RPR0521RS_ADDR 0x38 /* I2C Slave Address */
#define RPR0521RS_MANUFACTID 0xE0 /* Manufact ID */
#define RPR0521RS_PARTID 0x0A /* Part ID */
#define RPR0521RS_ALS_BYTESPERSAMPLE 4
#define RPR0521RS_PS_BYTESPERSAMPLE 2
#define RPR0521RS_ELEMENTSIZE 0
/* RPR0521RS Registers */
#define RPR0521RS_SYSTEM_CONTROL 0x40
#define RPR0521RS_MODE_CONTROL 0x41
#define RPR0521RS_ALS_PS_CONTROL 0x42
#define RPR0521RS_PS_CONTROL 0x43
#define RPR0521RS_PS_DATA_LSB 0x44
#define RPR0521RS_ALS_DATA0_LSB 0x46
#define RPR0521RS_INTERRUPT 0x4A
#define RPR0521RS_PS_TH_LSB 0x4B
#define RPR0521RS_PS_TL_LSB 0x4D
#define RPR0521RS_MANUFACT_ID 0x92
/* Register SYSTEM_CONTROL */
#define RPR0521RS_SYSTEM_CONTROL_INT_RESET (1 << 6)
/* Register MODE_CONTROL */
#define RPR0521RS_MODE_CONTROL_ALS_EN (1 << 7)
#define RPR0521RS_MODE_CONTROL_PS_EN (1 << 6)
#define RPR0521RS_MODE_CONTROL_MEASTIME_100_100MS (6 << 0)
#define RPR0521RS_MODE_CONTROL_MEASTIME_STANDBY (0 << 0)
/* Register ALS_PS_CONTROL */
#define RPR0521RS_ALS_PS_CONTROL_LED_CURRENT_100MA (2 << 0)
#define RPR0521RS_ALS_PS_CONTROL_DATA1_GAIN_X1 (0 << 2)
#define RPR0521RS_ALS_PS_CONTROL_DATA0_GAIN_X1 (0 << 4)
/* Register PS_CONTROL */
#define RPR0521RS_PS_CONTROL_PS_GAINX1 (0 << 4)
#define RPR0521RS_PS_CONTROL_PS_PERSISTENCE_2 (2 << 0)
/* Register INTERRUPT */
#define RPR0521RS_INTERRUPT_PS_INT_STATUS (1 << 7)
#define RPR0521RS_INTERRUPT_ALS_INT_STATUS (1 << 6)
#define RPR0521RS_INTERRUPT_INT_MODE_PS_TH (0 << 4)
#define RPR0521RS_INTERRUPT_INT_MODE_PS_HYSTERESIS (1 << 4)
#define RPR0521RS_INTERRUPT_INT_MODE_PS_OUTOFRANGE (2 << 4)
#define RPR0521RS_INTERRUPT_INT_ASSERT_KEEP_ACTIVE (0 << 3)
#define RPR0521RS_INTERRUPT_INT_LATCH_DISABLE (1 << 2)
#define RPR0521RS_INTERRUPT_INT_TRIG_PS (1 << 0)
#define RPR0521RS_INTERRUPT_INT_TRIG_INACTIVE (0 << 0)
/* PS_TH default value */
#define RPR0521RS_PS_TH_DEFAULT 0x0300
#define SETMODECONTROL_TYPE_PS 0
#define SETMODECONTROL_TYPE_ALS 1
#ifndef itemsof
# define itemsof(array) (sizeof(array)/sizeof(array[0]))
#endif
/****************************************************************************
* Private Type Definitions
****************************************************************************/
/* Structure for rpr0521rs device */
struct rpr0521rs_dev_s
{
struct i2c_master_s *i2c; /* I2C interface */
uint8_t addr; /* I2C address */
int port; /* I2C port */
struct seq_s *seq; /* Sequencer instance */
int minor; /* Minor device number */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/* Character driver methods */
static int rpr0521rs_open_als(struct file *filep);
static int rpr0521rs_open_ps(struct file *filep);
static int rpr0521rs_close_als(struct file *filep);
static int rpr0521rs_close_ps(struct file *filep);
static ssize_t rpr0521rs_read_als(struct file *filep,
char *buffer,
size_t buflen);
static ssize_t rpr0521rs_read_ps(struct file *filep,
char *buffer,
size_t buflen);
static ssize_t rpr0521rs_write(struct file *filep,
const char *buffer,
size_t buflen);
static int rpr0521rs_ioctl_als(struct file *filep,
int cmd,
unsigned long arg);
static int rpr0521rs_ioctl_ps(struct file *filep,
int cmd,
unsigned long arg);
/****************************************************************************
* Private Data
****************************************************************************/
/* Ambient light sensor */
static const struct file_operations g_rpr0521rsalsfops =
{
rpr0521rs_open_als, /* open */
rpr0521rs_close_als, /* close */
rpr0521rs_read_als, /* read */
rpr0521rs_write, /* write */
NULL, /* seek */
rpr0521rs_ioctl_als, /* ioctl */
};
/* Proximity sensor */
static const struct file_operations g_rpr0521rspsfops =
{
rpr0521rs_open_ps, /* open */
rpr0521rs_close_ps, /* close */
rpr0521rs_read_ps, /* read */
rpr0521rs_write, /* write */
NULL, /* seek */
rpr0521rs_ioctl_ps, /* ioctl */
};
/* SCU instructions for pick ambient light sensing data. */
static const uint16_t g_rpr0521rsalsinst[] =
{
SCU_INST_SEND(RPR0521RS_ALS_DATA0_LSB),
SCU_INST_RECV(RPR0521RS_ALS_BYTESPERSAMPLE) | SCU_INST_LAST,
};
#ifndef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
/* SCU instructions for pick proximity sensing data. */
static const uint16_t g_rpr0521rspsinst[] =
{
SCU_INST_SEND(RPR0521RS_PS_DATA_LSB),
SCU_INST_RECV(RPR0521RS_PS_BYTESPERSAMPLE) | SCU_INST_LAST,
};
#endif
/* Reference count */
static int g_als_refcnt = 0;
#ifndef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
static int g_ps_refcnt = 0;
#endif
/* Sequencer instance */
static struct seq_s *g_als_seq = NULL;
#ifndef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
static struct seq_s *g_ps_seq = NULL;
#endif
/* Proximity interrupt config */
static uint16_t g_ps_threshold = RPR0521RS_PS_TH_DEFAULT;
static uint8_t g_ps_persistence = RPR0521RS_PS_CONTROL_PS_PERSISTENCE_2;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: rpr0521rs_getreg8
*
* Description:
* Read from an 8-bit RPR0521RS register
*
****************************************************************************/
static uint8_t rpr0521rs_getreg8(struct rpr0521rs_dev_s *priv,
uint8_t regaddr)
{
uint8_t regval = 0;
uint16_t inst[2];
/* Send register to read and get the next byte */
inst[0] = SCU_INST_SEND(regaddr);
inst[1] = SCU_INST_RECV(1) | SCU_INST_LAST;
scu_i2ctransfer(priv->port, priv->addr, inst, 2, &regval, 1);
return regval;
}
/****************************************************************************
* Name: rpr0521rs_putreg8
*
* Description:
* Write to an 8-bit RPR0521RS register
*
****************************************************************************/
static void rpr0521rs_putreg8(struct rpr0521rs_dev_s *priv,
uint8_t regaddr, uint8_t regval)
{
uint16_t inst[2];
/* Send register address and set the value */
inst[0] = SCU_INST_SEND(regaddr);
inst[1] = SCU_INST_SEND(regval) | SCU_INST_LAST;
scu_i2ctransfer(priv->port, priv->addr, inst, 2, NULL, 0);
}
#ifdef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
/****************************************************************************
* Name: rpr0521rs_getreg16
*
* Description:
* Read from an 16-bit RPR0521RS register
*
****************************************************************************/
static uint16_t rpr0521rs_getreg16(struct rpr0521rs_dev_s *priv,
uint8_t regaddr)
{
uint16_t regval;
uint16_t inst[2];
/* Send register to read and get the next byte */
inst[0] = SCU_INST_SEND(regaddr);
inst[1] = SCU_INST_RECV(2) | SCU_INST_LAST;
scu_i2ctransfer(priv->port,
priv->addr,
inst,
2,
(uint8_t *)&regval,
2);
return regval;
}
/****************************************************************************
* Name: rpr0521rs_putreg16
*
* Description:
* Write to an 16-bit RPR0521RS register
*
****************************************************************************/
static void rpr0521rs_putreg16(struct rpr0521rs_dev_s *priv,
uint8_t regaddr, uint16_t regval)
{
uint16_t inst[3];
/* Send register address and set the value */
inst[0] = SCU_INST_SEND(regaddr);
inst[1] = SCU_INST_SEND((uint8_t)(regval & 0xff));
inst[2] = SCU_INST_SEND((uint8_t)(regval >> 8)) | SCU_INST_LAST;
scu_i2ctransfer(priv->port, priv->addr, inst, 3, NULL, 0);
}
#endif
/****************************************************************************
* Name: rpr0521rs_checkid
*
* Description:
* Read and verify the RPR0521RS chip ID
*
****************************************************************************/
static int rpr0521rs_checkid(struct rpr0521rs_dev_s *priv)
{
uint8_t id;
/* Read Manufact ID */
id = rpr0521rs_getreg8(priv, RPR0521RS_MANUFACT_ID);
if (id != RPR0521RS_MANUFACTID)
{
/* Manufact ID is not Correct */
snerr("Wrong Manufact ID! %02x\n", id);
return -ENODEV;
}
/* Read Part ID */
id = rpr0521rs_getreg8(priv, RPR0521RS_SYSTEM_CONTROL);
if ((id & 0x3f) != RPR0521RS_PARTID)
{
/* Part ID is not Correct */
snerr("Wrong Part ID! %02x\n", id);
return -ENODEV;
}
return OK;
}
/****************************************************************************
* Name: rpr0521rs_setmodecontrol
*
* Description:
* Set MODE_CONTROL register
*
****************************************************************************/
static void rpr0521rs_setmodecontrol(struct rpr0521rs_dev_s *priv,
uint8_t type, bool enable)
{
uint8_t val;
uint8_t checkbit;
uint8_t setbit;
irqstate_t flags;
if (type == SETMODECONTROL_TYPE_PS)
{
checkbit = RPR0521RS_MODE_CONTROL_ALS_EN;
setbit = RPR0521RS_MODE_CONTROL_PS_EN;
}
else
{
checkbit = RPR0521RS_MODE_CONTROL_PS_EN;
setbit = RPR0521RS_MODE_CONTROL_ALS_EN;
}
flags = enter_critical_section();
val = rpr0521rs_getreg8(priv, RPR0521RS_MODE_CONTROL);
if (val & checkbit)
{
if (enable)
{
val = setbit |
checkbit |
RPR0521RS_MODE_CONTROL_MEASTIME_100_100MS;
}
else
{
val = checkbit | RPR0521RS_MODE_CONTROL_MEASTIME_100_100MS;
}
}
else
{
if (enable)
{
val = setbit | RPR0521RS_MODE_CONTROL_MEASTIME_100_100MS;
}
else
{
val = RPR0521RS_MODE_CONTROL_MEASTIME_STANDBY;
}
}
rpr0521rs_putreg8(priv, RPR0521RS_MODE_CONTROL, val);
leave_critical_section(flags);
}
/****************************************************************************
* Name: rpr0521rsals_seqinit
*
* Description:
* Initialize SCU sequencer.
*
****************************************************************************/
static int rpr0521rsals_seqinit(struct rpr0521rs_dev_s *priv)
{
DEBUGASSERT(g_als_seq == NULL);
/* Open sequencer */
g_als_seq = seq_open(SEQ_TYPE_NORMAL, SCU_BUS_I2C0);
if (!g_als_seq)
{
return -ENOENT;
}
priv->seq = g_als_seq;
seq_setaddress(priv->seq, priv->addr);
/* Set instruction and sample data information to sequencer */
seq_setinstruction(priv->seq,
g_rpr0521rsalsinst,
itemsof(g_rpr0521rsalsinst));
seq_setsample(priv->seq,
RPR0521RS_ALS_BYTESPERSAMPLE,
0,
RPR0521RS_ELEMENTSIZE,
false);
return OK;
}
#ifndef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
/****************************************************************************
* Name: rpr0521rsps_seqinit
*
* Description:
* Initialize SCU sequencer.
*
****************************************************************************/
static int rpr0521rsps_seqinit(struct rpr0521rs_dev_s *priv)
{
DEBUGASSERT(g_ps_seq == NULL);
/* Open sequencer */
g_ps_seq = seq_open(SEQ_TYPE_NORMAL, SCU_BUS_I2C0);
if (!g_ps_seq)
{
return -ENOENT;
}
priv->seq = g_ps_seq;
seq_setaddress(priv->seq, priv->addr);
/* Set instruction and sample data information to sequencer */
seq_setinstruction(priv->seq,
g_rpr0521rspsinst,
itemsof(g_rpr0521rspsinst));
seq_setsample(priv->seq,
RPR0521RS_PS_BYTESPERSAMPLE,
0,
RPR0521RS_ELEMENTSIZE,
false);
return OK;
}
#endif
/****************************************************************************
* Name: rpr0521rs_open_als
*
* Description:
* This function is called whenever the RPR0521RS device is opened.
*
****************************************************************************/
static int rpr0521rs_open_als(struct file *filep)
{
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
if (g_als_refcnt == 0)
{
int ret;
ret = rpr0521rsals_seqinit(priv);
if (ret < 0)
{
return ret;
}
rpr0521rs_setmodecontrol(priv, SETMODECONTROL_TYPE_ALS, true);
}
else
{
/* Set existing sequencer */
priv->seq = g_als_seq;
}
g_als_refcnt++;
return OK;
}
/****************************************************************************
* Name: rpr0521rs_open_ps
*
* Description:
* This function is called whenever the RPR0521RS device is opened.
*
****************************************************************************/
static int rpr0521rs_open_ps(struct file *filep)
{
#ifndef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
if (g_ps_refcnt == 0)
{
int ret;
ret = rpr0521rsps_seqinit(priv);
if (ret < 0)
{
return ret;
}
rpr0521rs_setmodecontrol(priv, SETMODECONTROL_TYPE_PS, true);
}
else
{
/* Set existing sequencer */
priv->seq = g_ps_seq;
}
g_ps_refcnt++;
#endif
return OK;
}
/****************************************************************************
* Name: rpr0521rs_close_als
*
* Description:
* This routine is called when the RPR0521RS device is closed.
*
****************************************************************************/
static int rpr0521rs_close_als(struct file *filep)
{
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
g_als_refcnt--;
seq_ioctl(priv->seq, priv->minor, SCUIOC_STOP, 0);
if (g_als_refcnt == 0)
{
rpr0521rs_setmodecontrol(priv, SETMODECONTROL_TYPE_ALS, false);
seq_close(g_als_seq);
g_als_seq = NULL;
}
else
{
seq_ioctl(priv->seq, priv->minor, SCUIOC_FREEFIFO, 0);
}
return OK;
}
/****************************************************************************
* Name: rpr0521rs_close_ps
*
* Description:
* This routine is called when the RPR0521RS device is closed.
*
****************************************************************************/
static int rpr0521rs_close_ps(struct file *filep)
{
#ifndef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
g_ps_refcnt--;
seq_ioctl(priv->seq, priv->minor, SCUIOC_STOP, 0);
if (g_ps_refcnt == 0)
{
rpr0521rs_setmodecontrol(priv, SETMODECONTROL_TYPE_PS, false);
if (g_ps_seq)
{
seq_close(g_ps_seq);
g_ps_seq = NULL;
}
}
else
{
seq_ioctl(priv->seq, priv->minor, SCUIOC_FREEFIFO, 0);
}
#endif
return OK;
}
/****************************************************************************
* Name: rpr0521rs_read_als
****************************************************************************/
static ssize_t rpr0521rs_read_als(struct file *filep, char *buffer,
size_t len)
{
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
len = len / RPR0521RS_ALS_BYTESPERSAMPLE * RPR0521RS_ALS_BYTESPERSAMPLE;
len = seq_read(priv->seq, priv->minor, buffer, len);
return len;
}
/****************************************************************************
* Name: rpr0521rs_read_ps
****************************************************************************/
static ssize_t rpr0521rs_read_ps(struct file *filep, char *buffer,
size_t len)
{
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
len = len / RPR0521RS_PS_BYTESPERSAMPLE * RPR0521RS_PS_BYTESPERSAMPLE;
#ifdef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
if (len)
{
len = RPR0521RS_PS_BYTESPERSAMPLE;
*(uint16_t *)buffer = rpr0521rs_getreg16(priv,
RPR0521RS_PS_DATA_LSB);
}
#else
len = seq_read(priv->seq, priv->minor, buffer, len);
#endif
return len;
}
/****************************************************************************
* Name: rpr0521rs_write
****************************************************************************/
static ssize_t rpr0521rs_write(struct file *filep,
const char *buffer,
size_t buflen)
{
return -ENOSYS;
}
/****************************************************************************
* Name: rpr0521rs_ioctl_als
****************************************************************************/
static int rpr0521rs_ioctl_als(struct file *filep,
int cmd,
unsigned long arg)
{
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
int ret = OK;
switch (cmd)
{
default:
{
if (_SCUIOCVALID(cmd))
{
/* Redirect SCU commands */
ret = seq_ioctl(priv->seq, priv->minor, cmd, arg);
}
else
{
snerr("Unrecognized cmd: %d\n", cmd);
ret = - ENOTTY;
}
}
break;
}
return ret;
}
/****************************************************************************
* Name: rpr0521rs_ioctl_ps
****************************************************************************/
static int rpr0521rs_ioctl_ps(struct file *filep,
int cmd,
unsigned long arg)
{
struct inode *inode = filep->f_inode;
struct rpr0521rs_dev_s *priv = inode->i_private;
int ret = OK;
#ifdef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
uint8_t val;
#endif
switch (cmd)
{
case SNIOC_SETTHRESHOLD:
{
g_ps_threshold = (uint16_t)arg;
}
break;
case SNIOC_SETPERSISTENCE:
{
g_ps_persistence = (uint8_t)arg;
}
break;
case SNIOC_STARTMEASUREMENT:
{
#ifdef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
val = RPR0521RS_PS_CONTROL_PS_GAINX1 | (g_ps_persistence & 0x0f);
rpr0521rs_putreg8(priv, RPR0521RS_PS_CONTROL, val);
rpr0521rs_putreg16(priv, RPR0521RS_PS_TH_LSB,
g_ps_threshold & 0x0fff);
val = RPR0521RS_INTERRUPT_INT_MODE_PS_TH |
RPR0521RS_INTERRUPT_INT_ASSERT_KEEP_ACTIVE |
RPR0521RS_INTERRUPT_INT_LATCH_DISABLE |
RPR0521RS_INTERRUPT_INT_TRIG_PS;
rpr0521rs_putreg8(priv, RPR0521RS_INTERRUPT, val);
rpr0521rs_setmodecontrol(priv, SETMODECONTROL_TYPE_PS, true);
#endif
}
break;
case SNIOC_STOPMEASUREMENT:
{
#ifdef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
rpr0521rs_setmodecontrol(priv, SETMODECONTROL_TYPE_PS, false);
val = RPR0521RS_INTERRUPT_INT_TRIG_INACTIVE;
rpr0521rs_putreg8(priv, RPR0521RS_INTERRUPT, val);
val = RPR0521RS_SYSTEM_CONTROL_INT_RESET;
rpr0521rs_putreg8(priv, RPR0521RS_SYSTEM_CONTROL, val);
#endif
}
break;
case SNIOC_GETINTSTATUS:
{
uint8_t intstatus = rpr0521rs_getreg8(priv,
RPR0521RS_INTERRUPT);
*(uint8_t *)(uintptr_t)arg = intstatus;
sninfo("Get proximity IntStatus 0x%02x\n", intstatus);
}
break;
default:
{
if (_SCUIOCVALID(cmd))
{
#ifndef CONFIG_RPR0521RS_PROXIMITY_INTERRUPT
/* Redirect SCU commands */
ret = seq_ioctl(priv->seq, priv->minor, cmd, arg);
#else
snerr("Unregistered SCU sequencer cmd: %d\n", cmd);
ret = - ENOTTY;
#endif
}
else
{
snerr("Unrecognized cmd: %d\n", cmd);
ret = - ENOTTY;
}
}
break;
}
return ret;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rpr0521rs_init
*
* Description:
* Initialize the RPR0521RS device
*
* Input Parameters:
* i2c - An instance of the I2C interface to use to communicate with
* RPR0521RS
* port - I2C port (0 or 1)
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int rpr0521rs_init(struct i2c_master_s *i2c, int port)
{
struct rpr0521rs_dev_s tmp;
struct rpr0521rs_dev_s *priv = &tmp;
int ret;
uint8_t val;
/* Setup temporary device structure for initialization */
priv->i2c = i2c;
priv->addr = RPR0521RS_ADDR;
priv->port = port;
/* Check Device ID */
ret = rpr0521rs_checkid(priv);
if (ret < 0)
{
snerr("Failed to register driver: %d\n", ret);
return ret;
}
/* ALS initialize */
val = RPR0521RS_ALS_PS_CONTROL_DATA0_GAIN_X1 |
RPR0521RS_ALS_PS_CONTROL_DATA1_GAIN_X1 |
RPR0521RS_ALS_PS_CONTROL_LED_CURRENT_100MA;
rpr0521rs_putreg8(priv, RPR0521RS_ALS_PS_CONTROL, val);
/* PS initialize */
val = RPR0521RS_PS_CONTROL_PS_GAINX1;
rpr0521rs_putreg8(priv, RPR0521RS_PS_CONTROL, val);
val = RPR0521RS_INTERRUPT_INT_TRIG_INACTIVE;
rpr0521rs_putreg8(priv, RPR0521RS_INTERRUPT, val);
return OK;
}
/****************************************************************************
* Name: rpr0521rsals_register
*
* Description:
* Register the RPR0521RS ambient light sensor character device as
* 'devpath'
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/light0"
* minor - minor device number
* i2c - An instance of the I2C interface to use to communicate with
* RPR0521RS
* port - I2C port (0 or 1)
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int rpr0521rsals_register(const char *devpath, int minor,
struct i2c_master_s *i2c, int port)
{
struct rpr0521rs_dev_s *priv;
char path[16];
int ret;
/* Initialize the RPR0521RS device structure */
priv = (struct rpr0521rs_dev_s *)
kmm_malloc(sizeof(struct rpr0521rs_dev_s));
if (!priv)
{
snerr("Failed to allocate instance\n");
return -ENOMEM;
}
priv->i2c = i2c;
priv->addr = RPR0521RS_ADDR;
priv->port = port;
priv->seq = NULL;
priv->minor = minor;
/* Register the character driver */
snprintf(path, sizeof(path), "%s%d", devpath, minor);
ret = register_driver(path, &g_rpr0521rsalsfops, 0666, priv);
if (ret < 0)
{
snerr("Failed to register driver: %d\n", ret);
kmm_free(priv);
}
return ret;
}
/****************************************************************************
* Name: rpr0521rsps_register
*
* Description:
* Register the RPR0521RS proximity sensor character device as 'devpath'
*
* Input Parameters:
* devpath - The full path to the driver to register. E.g., "/dev/proxim0"
* minor - minor device number
* i2c - An instance of the I2C interface to use to communicate with
* RPR0521RS
* port - I2C port (0 or 1)
*
* Returned Value:
* Zero (OK) on success; a negated errno value on failure.
*
****************************************************************************/
int rpr0521rsps_register(const char *devpath, int minor,
struct i2c_master_s *i2c, int port)
{
struct rpr0521rs_dev_s *priv;
char path[16];
int ret;
/* Initialize the RPR0521RS device structure */
priv = (struct rpr0521rs_dev_s *)
kmm_malloc(sizeof(struct rpr0521rs_dev_s));
if (!priv)
{
snerr("Failed to allocate instance\n");
return -ENOMEM;
}
priv->i2c = i2c;
priv->addr = RPR0521RS_ADDR;
priv->port = port;
priv->seq = NULL;
priv->minor = minor;
/* Register the character driver */
snprintf(path, sizeof(path), "%s%d", devpath, minor);
ret = register_driver(path, &g_rpr0521rspsfops, 0666, priv);
if (ret < 0)
{
snerr("Failed to register driver: %d\n", ret);
kmm_free(priv);
}
sninfo("RPR0521RS proximity sensor driver loaded successfully!\n");
return ret;
}
#endif /* CONFIG_I2C && CONFIG_RPR0521RS && CONFIG_CXD56_SCU */