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driver/motor: add upperhalf structure

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Signed-off-by: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
This commit is contained in:
Jiuzhu Dong
2021-11-12 14:44:50 +08:00
committed by Xiang Xiao
parent ea0aadff1e
commit c0c1e46c5f
2 changed files with 172 additions and 128 deletions
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drivers/motor/motor.c
+127 -85
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@@ -36,10 +36,25 @@
#include <nuttx/arch.h>
#include <nuttx/fs/fs.h>
#include <nuttx/kmalloc.h>
#include <nuttx/semaphore.h>
#include <nuttx/motor/motor.h>
#include <nuttx/irq.h>
/****************************************************************************
* Private Types
****************************************************************************/
/* This structure describes the state of the upper half driver */
struct motor_upperhalf_s
{
FAR struct motor_lowerhalf_s *lower; /* the handle of lower half driver */
uint8_t ocount; /* The number of times the device has been opened */
sem_t closesem; /* Locks out new opens while close is in progress */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
@@ -85,14 +100,15 @@ static const struct file_operations motor_fops =
static int motor_open(FAR struct file *filep)
{
FAR struct inode *inode = filep->f_inode;
FAR struct motor_dev_s *dev = inode->i_private;
uint8_t tmp;
int ret;
FAR struct inode *inode = filep->f_inode;
FAR struct motor_upperhalf_s *upper = inode->i_private;
FAR struct motor_lowerhalf_s *lower = upper->lower;
uint8_t tmp;
int ret;
/* If the port is the middle of closing, wait until the close is finished */
ret = nxsem_wait(&dev->closesem);
ret = nxsem_wait(&upper->closesem);
if (ret >= 0)
{
/* Increment the count of references to the device. If this the first
@@ -100,7 +116,7 @@ static int motor_open(FAR struct file *filep)
* initialize the device.
*/
tmp = dev->ocount + 1;
tmp = upper->ocount + 1;
if (tmp == 0)
{
/* More than 255 opens; uint8_t overflows to zero */
@@ -118,19 +134,19 @@ static int motor_open(FAR struct file *filep)
/* Yes.. perform one time hardware initialization. */
irqstate_t flags = enter_critical_section();
ret = dev->ops->setup(dev);
ret = lower->ops->setup(lower);
if (ret == OK)
{
/* Save the new open count on success */
dev->ocount = tmp;
upper->ocount = tmp;
}
leave_critical_section(flags);
}
}
nxsem_post(&dev->closesem);
nxsem_post(&upper->closesem);
}
return OK;
@@ -146,36 +162,37 @@ static int motor_open(FAR struct file *filep)
static int motor_close(FAR struct file *filep)
{
FAR struct inode *inode = filep->f_inode;
FAR struct motor_dev_s *dev = inode->i_private;
irqstate_t flags;
int ret;
FAR struct inode *inode = filep->f_inode;
FAR struct motor_upperhalf_s *upper = inode->i_private;
FAR struct motor_lowerhalf_s *lower = upper->lower;
irqstate_t flags;
int ret;
ret = nxsem_wait(&dev->closesem);
ret = nxsem_wait(&upper->closesem);
if (ret >= 0)
{
/* Decrement the references to the driver. If the reference count will
* decrement to 0, then uninitialize the driver.
*/
if (dev->ocount > 1)
if (upper->ocount > 1)
{
dev->ocount--;
nxsem_post(&dev->closesem);
upper->ocount--;
nxsem_post(&upper->closesem);
}
else
{
/* There are no more references to the port */
dev->ocount = 0;
upper->ocount = 0;
/* Free the IRQ and disable the motor device */
flags = enter_critical_section(); /* Disable interrupts */
dev->ops->shutdown(dev); /* Disable the motor */
lower->ops->shutdown(lower); /* Disable the motor */
leave_critical_section(flags);
nxsem_post(&dev->closesem);
nxsem_post(&upper->closesem);
}
}
@@ -208,9 +225,9 @@ static ssize_t motor_write(FAR struct file *filep, FAR const char *buffer,
static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
FAR struct inode *inode = filep->f_inode;
FAR struct motor_dev_s *dev = inode->i_private;
FAR struct motor_s *motor = (FAR struct motor_s *)dev->priv;
FAR struct inode *inode = filep->f_inode;
FAR struct motor_upperhalf_s *upper = inode->i_private;
FAR struct motor_lowerhalf_s *lower = upper->lower;
int ret;
switch (cmd)
@@ -221,28 +238,28 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
* and structure is locked.
*/
if ((motor->limits.lock == false) ||
if ((lower->limits.lock == false) ||
(
#ifdef CONFIG_MOTOR_UPPER_HAVE_POSITION
motor->limits.position <= 0.0 &&
lower->limits.position <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_SPEED
motor->limits.speed <= 0.0 &&
lower->limits.speed <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_TORQUE
motor->limits.torque <= 0.0 &&
lower->limits.torque <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_FORCE
motor->limits.force <= 0.0 &&
lower->limits.force <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_INPUT_VOLTAGE
motor->limits.v_in <= 0.0 &&
lower->limits.v_in <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_INPUT_CURRENT
motor->limits.i_in <= 0.0 &&
lower->limits.i_in <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_INPUT_POWER
motor->limits.p_in <= 0.0 &&
lower->limits.p_in <= 0.0 &&
#endif
1))
{
@@ -255,7 +272,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
/* Check motor mode */
if (motor->opmode == MOTOR_OPMODE_INIT)
if (lower->opmode == MOTOR_OPMODE_INIT)
{
mtrerr("Motor operation mode not specified\n");
@@ -267,7 +284,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
/* Finally, call start from lower-half driver */
ret = dev->ops->start(dev);
ret = lower->ops->start(lower);
if (ret != OK)
{
mtrerr("MTRIOC_START failed %d\n", ret);
@@ -279,7 +296,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
/* Call stop from lower-half driver */
ret = dev->ops->stop(dev);
ret = lower->ops->stop(lower);
if (ret != OK)
{
mtrerr("MTRIOC_STOP failed %d\n", ret);
@@ -291,7 +308,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
uint8_t mode = ((uint8_t)arg);
ret = dev->ops->mode_set(dev, mode);
ret = lower->ops->mode_set(lower, mode);
if (ret != OK)
{
mtrerr("MTRIOC_SET_MODE failed %d\n", ret);
@@ -304,7 +321,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
FAR struct motor_limits_s *limits =
(FAR struct motor_limits_s *)((uintptr_t)arg);
if (motor->limits.lock == true)
if (lower->limits.lock == true)
{
mtrerr("Motor limits locked!\n");
@@ -314,7 +331,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
/* NOTE: this call must set the motor_limits_s structure */
ret = dev->ops->limits_set(dev, limits);
ret = lower->ops->limits_set(lower, limits);
if (ret != OK)
{
mtrerr("MTRIOC_SET_LIMITS failed %d\n", ret);
@@ -327,7 +344,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
FAR struct motor_state_s *state =
(FAR struct motor_state_s *)((uintptr_t)arg);
ret = dev->ops->state_get(dev, state);
ret = lower->ops->state_get(lower, state);
if (ret != OK)
{
mtrerr("MTRIOC_GET_STATE failed %d\n", ret);
@@ -339,7 +356,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
uint8_t fault = ((uint8_t)arg);
ret = dev->ops->fault_set(dev, fault);
ret = lower->ops->fault_set(lower, fault);
if (ret != OK)
{
mtrerr("MTRIOC_SET_FAULT failed %d\n", ret);
@@ -351,7 +368,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
FAR uint8_t *fault = ((FAR uint8_t *)arg);
ret = dev->ops->fault_get(dev, fault);
ret = lower->ops->fault_get(lower, fault);
if (ret != OK)
{
mtrerr("MTRIOC_GET_FAULT failed %d\n", ret);
@@ -363,7 +380,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
{
uint8_t fault = ((uint8_t)arg);
ret = dev->ops->fault_clear(dev, fault);
ret = lower->ops->fault_clear(lower, fault);
if (ret != OK)
{
mtrerr("MTRIOC_CLEAR_FAULT failed %d\n", ret);
@@ -376,7 +393,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
FAR struct motor_params_s *params =
(FAR struct motor_params_s *)((uintptr_t)arg);
if (motor->param.lock == true)
if (lower->param.lock == true)
{
mtrerr("Motor params locked!\n");
@@ -384,28 +401,28 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
goto errout;
}
if ((motor->limits.lock == false) ||
if ((lower->limits.lock == false) ||
(
#ifdef CONFIG_MOTOR_UPPER_HAVE_POSITION
motor->limits.position <= 0.0 &&
lower->limits.position <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_SPEED
motor->limits.speed <= 0.0 &&
lower->limits.speed <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_TORQUE
motor->limits.torque <= 0.0 &&
lower->limits.torque <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_FORCE
motor->limits.force <= 0.0 &&
lower->limits.force <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_INPUT_VOLTAGE
motor->limits.v_in <= 0.0 &&
lower->limits.v_in <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_INPUT_CURRENT
motor->limits.i_in <= 0.0 &&
lower->limits.i_in <= 0.0 &&
#endif
#ifdef CONFIG_MOTOR_UPPER_HAVE_INPUT_POWER
motor->limits.p_in <= 0.0 &&
lower->limits.p_in <= 0.0 &&
#endif
1))
{
@@ -433,11 +450,11 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
/* Check position configuration */
if (params->position < 0.0 ||
params->position > motor->limits.position)
params->position > lower->limits.position)
{
mtrerr("params->position > limits.position: "
"%.2f > %.2f\n",
params->position, motor->limits.position);
params->position, lower->limits.position);
ret = -EPERM;
goto errout;
@@ -447,11 +464,11 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
#ifdef CONFIG_MOTOR_UPPER_HAVE_SPEED
/* Check speed configuration */
if (motor->limits.speed > 0.0 &&
params->speed > motor->limits.speed)
if (lower->limits.speed > 0.0 &&
params->speed > lower->limits.speed)
{
mtrerr("params->speed > limits.speed: %.2f > %.2f\n",
params->speed, motor->limits.speed);
params->speed, lower->limits.speed);
ret = -EPERM;
goto errout;
@@ -461,11 +478,11 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
#ifdef CONFIG_MOTOR_UPPER_HAVE_TORQUE
/* Check torque configuration */
if (motor->limits.torque > 0.0 &&
params->torque > motor->limits.torque)
if (lower->limits.torque > 0.0 &&
params->torque > lower->limits.torque)
{
mtrerr("params->torque > limits.torque: %.2f > %.2f\n",
params->torque, motor->limits.torque);
params->torque, lower->limits.torque);
ret = -EPERM;
goto errout;
@@ -475,18 +492,18 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
#ifdef CONFIG_MOTOR_UPPER_HAVE_FORCE
/* Check force configuration */
if (motor->limits.force > 0.0 &&
params->force > motor->limits.force)
if (lower->limits.force > 0.0 &&
params->force > lower->limits.force)
{
mtrerr("params->force > limits.force: %.2f > %.2f\n",
params->force, motor->limits.force);
params->force, lower->limits.force);
ret = -EPERM;
goto errout;
}
#endif
ret = dev->ops->params_set(dev, params);
ret = lower->ops->params_set(lower, params);
if (ret != OK)
{
mtrerr("MTRIOC_SET_PARAMS failed %d\n", ret);
@@ -497,7 +514,7 @@ static int motor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
default:
{
mtrinfo("Forwarding unrecognized cmd: %d arg: %ld\n", cmd, arg);
ret = dev->ops->ioctl(dev, cmd, arg);
ret = lower->ops->ioctl(lower, cmd, arg);
break;
}
}
@@ -512,15 +529,34 @@ errout:
/****************************************************************************
* Name: motor_register
*
* Description:
* This function binds an instance of a "lower half" motor driver with the
* "upper half" motor device and registers that device so that can be used
* by application code.
*
* We will register the chararter device with specified path.
*
* Input Parameters:
* path - The user specifies path name.
* lower - A pointer to an instance of lower half motor driver. This
* instance is bound to the motor driver and must persists as long
* as the driver persists.
*
* Returned Value:
* OK if the driver was successfully register; A negated errno value is
* returned on any failure.
*
****************************************************************************/
int motor_register(FAR const char *path, FAR struct motor_dev_s *dev,
FAR void *lower)
int motor_register(FAR const char *path,
FAR struct motor_lowerhalf_s *lower)
{
FAR struct motor_upperhalf_s *upper;
int ret;
DEBUGASSERT(path != NULL && dev != NULL && lower != NULL);
DEBUGASSERT(dev->ops != NULL);
DEBUGASSERT(path != NULL && lower != NULL);
DEBUGASSERT(lower->ops != NULL);
/* For safety reason, when some necessary low-level logic is not provided,
* system should fail before low-level hardware initialization, so:
@@ -528,37 +564,43 @@ int motor_register(FAR const char *path, FAR struct motor_dev_s *dev,
* - all ops must be provided, even if not used
*/
DEBUGASSERT(dev->ops->setup != NULL);
DEBUGASSERT(dev->ops->shutdown != NULL);
DEBUGASSERT(dev->ops->stop != NULL);
DEBUGASSERT(dev->ops->start != NULL);
DEBUGASSERT(dev->ops->params_set != NULL);
DEBUGASSERT(dev->ops->mode_set != NULL);
DEBUGASSERT(dev->ops->limits_set != NULL);
DEBUGASSERT(dev->ops->fault_set != NULL);
DEBUGASSERT(dev->ops->state_get != NULL);
DEBUGASSERT(dev->ops->fault_get != NULL);
DEBUGASSERT(dev->ops->fault_clear != NULL);
DEBUGASSERT(dev->ops->ioctl != NULL);
DEBUGASSERT(lower->ops->setup != NULL);
DEBUGASSERT(lower->ops->shutdown != NULL);
DEBUGASSERT(lower->ops->stop != NULL);
DEBUGASSERT(lower->ops->start != NULL);
DEBUGASSERT(lower->ops->params_set != NULL);
DEBUGASSERT(lower->ops->mode_set != NULL);
DEBUGASSERT(lower->ops->limits_set != NULL);
DEBUGASSERT(lower->ops->fault_set != NULL);
DEBUGASSERT(lower->ops->state_get != NULL);
DEBUGASSERT(lower->ops->fault_get != NULL);
DEBUGASSERT(lower->ops->fault_clear != NULL);
DEBUGASSERT(lower->ops->ioctl != NULL);
/* Initialize the motor device structure */
/* Allocate the upper-half data structure */
dev->ocount = 0;
upper = kmm_zalloc(sizeof(struct motor_upperhalf_s));
if (!upper)
{
mtrerr("ERROR: Allocation failed\n");
return -ENOMEM;
}
/* Initialize semaphores */
nxsem_init(&dev->closesem, 0, 1);
nxsem_init(&upper->closesem, 0, 1);
/* Connect motor driver with lower level interface */
dev->lower = lower;
upper->lower = lower;
/* Register the motor character driver */
ret = register_driver(path, &motor_fops, 0444, dev);
ret = register_driver(path, &motor_fops, 0444, upper);
if (ret < 0)
{
nxsem_destroy(&dev->closesem);
nxsem_destroy(&upper->closesem);
kmm_free(upper);
}
return ret;