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drivers/rpmsg_port_uart: add reboot notifier for rpmsg_port_uart

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Peer will receive the power off command and unregister the rpmsg
connections to avoid the rpmsg services stuck at the rpmsg operations.

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
This commit is contained in:
Bowen Wang
2025-02-24 11:00:02 +08:00
committed by GUIDINGLI
parent 3e9003802b
commit df366b591f
1 changed files with 25 additions and 0 deletions
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25
drivers/rpmsg/rpmsg_port_uart.c
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@@ -37,6 +37,7 @@
#include <nuttx/kthread.h>
#include <nuttx/mutex.h>
#include <nuttx/power/pm.h>
#include <nuttx/reboot_notifier.h>
#include <nuttx/semaphore.h>
#include "rpmsg_port.h"
@@ -100,6 +101,7 @@ struct rpmsg_port_uart_s
char localcpu[RPMSG_NAME_SIZE];
rpmsg_port_rx_cb_t rx_cb;
nxevent_t event;
struct notifier_block nb; /* Reboot notifier block */
#ifdef CONFIG_PM
struct pm_wakelock_s txwakelock;
struct pm_wakelock_s rxwakelock;
@@ -679,6 +681,27 @@ static int rpmsg_port_uart_tx_thread(int argc, FAR char *argv[])
return 0;
}
/****************************************************************************
* Name: rpmsg_port_uart_reboot_notifier
****************************************************************************/
static int rpmsg_port_uart_reboot_notifier(FAR struct notifier_block *nb,
unsigned long action,
FAR void *data)
{
FAR struct rpmsg_port_uart_s *rpuart =
container_of(nb, struct rpmsg_port_uart_s, nb);
if ((action == SYS_POWER_OFF || action == SYS_RESTART) &&
rpmsg_port_uart_check(rpuart, RPMSG_PORT_UART_EVT_CONNED))
{
rpmsg_port_uart_staywake(rpuart);
rpmsg_port_uart_send_one(rpuart, RPMSG_PORT_UART_POWEROFF);
}
return 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
@@ -772,6 +795,8 @@ int rpmsg_port_uart_initialize(FAR const struct rpmsg_port_config_s *cfg,
goto err_tx_thread;
}
rpuart->nb.notifier_call = rpmsg_port_uart_reboot_notifier;
register_reboot_notifier(&rpuart->nb);
return ret;
err_tx_thread: