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add the ability that control CAN transceiver state.

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add the ability that control CAN transceiver state in nuttx.

Signed-off-by: zhaohaiyang1 <zhaohaiyang1@xiaomi.com>
This commit is contained in:
zhaohaiyang1 2024-07-10 14:12:15 +08:00 committed by Xiang Xiao
parent 3382752b40
commit 2ebfdf737c
2 changed files with 111 additions and 6 deletions
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47
drivers/can/can.c
View file

@ -902,6 +902,53 @@ static int can_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
}
break;
/* Set specfic can transceiver state */
case CANIOC_SET_TRANSVSTATE:
{
/* if we don't use dev->cd_transv->cts_ops, please initlize
* this poniter to NULL in lower board code when Board reset.
*/
if (dev->cd_transv && dev->cd_transv->ct_ops
&& dev->cd_transv->ct_ops->ct_setstate)
{
FAR const struct can_transv_ops_s *ct_ops =
dev->cd_transv->ct_ops;
ret = ct_ops->ct_setstate(dev->cd_transv, arg);
}
else
{
canerr("dev->cd_transv->cts_ops is NULL!");
ret = -ENOTTY;
}
}
break;
/* Get specfic can transceiver state */
case CANIOC_GET_TRANSVSTATE:
{
/* if we don't use dev->cd_transv->cts_ops, please initlize
* this poniter to NULL in lower board code when Board reset.
*/
if (dev->cd_transv && dev->cd_transv->ct_ops
&& dev->cd_transv->ct_ops->ct_getstate)
{
int *state = (FAR int *)arg;
FAR const struct can_transv_ops_s *ct_ops =
dev->cd_transv->ct_ops;
ret = ct_ops->ct_getstate(dev->cd_transv, state);
}
else
{
canerr("dev->cd_transv->cts_ops is NULL!");
ret = -ENOTTY;
}
}
break;
/* Not a "built-in" ioctl command.. perhaps it is unique to this
* lower-half, device driver.
*/

70
include/nuttx/can/can.h
View file

@ -261,8 +261,8 @@
* CANIOC_SET_STATE
* Description: Set specfic can controller state
*
* Argument: A pointer to an enumeration type that describes the CAN
* state
* Argument: A pointer to an int type that describes the CAN
* controller state.
* returned Value: Zero (OK) is returned on success. Otherwise -1 (ERROR)
* is returned with the errno variable set to indicate the
* nature of the error.
@ -271,8 +271,28 @@
* CANIOC_GET_STATE
* Description: Get specfic can controller state
*
* Argument: A pointer to an enumeration type that describes the CAN
* state
* Argument: A pointer to an int type that describes the CAN
* controller state.
* returned Value: Zero (OK) is returned on success. Otherwise -1 (ERROR)
* is returned with the errno variable set to indicate the
* nature of the error.
* Dependencies: None
*
* CANIOC_SET_TRANSV_STATE
* Description: Set specfic can transceiver state
*
* Argument: A pointer to an int type that describes the CAN
* transceiver state.
* returned Value: Zero (OK) is returned on success. Otherwise -1 (ERROR)
* is returned with the errno variable set to indicate the
* nature of the error.
* Dependencies: None
*
* CANIOC_GET_TRANSV_STATE
* Description: Get specfic can transceiver state
*
* Argument: A pointer to an int type that describes the CAN
* transceiver state.
* returned Value: Zero (OK) is returned on success. Otherwise -1 (ERROR)
* is returned with the errno variable set to indicate the
* nature of the error.
@ -296,9 +316,11 @@
#define CANIOC_IOFLUSH _CANIOC(15)
#define CANIOC_SET_STATE _CANIOC(16)
#define CANIOC_GET_STATE _CANIOC(17)
#define CANIOC_SET_TRANSVSTATE _CANIOC(18)
#define CANIOC_GET_TRANSVSTATE _CANIOC(19)
#define CAN_FIRST 0x0001 /* First common command */
#define CAN_NCMDS 15 /* 16 common commands */
#define CAN_NCMDS 19 /* 20 common commands */
/* User defined ioctl commands are also supported. These will be forwarded
* by the upper-half CAN driver to the lower-half CAN driver via the
@ -479,6 +501,22 @@
#define CAN_STATE_START 1
/* Indicates that the can transceiver is in the sleep state */
#define CAN_TRANSVSTATE_SLEEP 0
/* Indicates that the can transceiver is in the standby state just called
* first-level power saving mode.
*/
#define CAN_TRANSVSTATE_STANDBY 1
/* Indicates that the can transceiver is in the awake state
* the transceiver can transmit and receive data.
*/
#define CAN_TRANSVSTATE_NORMAL 2
/* CAN bit timing support ***************************************************/
#define CAN_BITTIMING_NOMINAL 0 /* Specifies nominal bittiming */
@ -624,6 +662,21 @@ struct can_rtrwait_s
*/
struct can_dev_s;
/* This is the device structure as struct can_dev_s's subdevice
* used by the driver.
*/
struct can_transv_s;
struct can_transv_ops_s
{
CODE int (*ct_setstate)(FAR struct can_transv_s *transv, int state);
CODE int (*ct_getstate)(FAR struct can_transv_s *transv,
FAR int *state);
};
struct can_ops_s
{
/* Reset the CAN device. Called early to initialize the hardware. This
@ -702,6 +755,11 @@ struct can_reader_s
struct can_rxfifo_s fifo; /* Describes receive FIFO */
};
struct can_transv_s
{
FAR const struct can_transv_ops_s *ct_ops; /* Arch-specific operations */
};
struct can_dev_s
{
uint8_t cd_crefs; /* References counts on number of opens */
@ -718,7 +776,7 @@ struct can_dev_s
struct can_rtrwait_s cd_rtr[CONFIG_CAN_NPENDINGRTR];
FAR const struct can_ops_s *cd_ops; /* Arch-specific operations */
FAR void *cd_priv; /* Used by the arch-specific logic */
FAR struct can_transv_s *cd_transv; /* Describes CAN transceiver */
FAR struct pollfd *cd_fds[CONFIG_CAN_NPOLLWAITERS];
};