Add a 'request_arg' op to struct sysreset_ops to enable sysreset drivers
to receive arguments given to the 'reset' command. Process the
request_arg() op before the usual request() op.
Signed-off-by: Varadarajan Narayanan <quic_var...@quicinc.com>
---
v4: Fix compiler warnings -> s/const char *argv/char * const argv/
---
drivers/sysreset/sysreset-uclass.c | 32 ++++++++++++++++++++++++++++++
include/sysreset.h | 18 +++++++++++++++++
2 files changed, 50 insertions(+)
diff --git a/drivers/sysreset/sysreset-uclass.c
b/drivers/sysreset/sysreset-uclass.c
index 536ac727142..6eb090a37aa 100644
--- a/drivers/sysreset/sysreset-uclass.c
+++ b/drivers/sysreset/sysreset-uclass.c
@@ -32,6 +32,16 @@ int sysreset_request(struct udevice *dev, enum sysreset_t
type)
return ops->request(dev, type);
}
+int sysreset_request_arg(struct udevice *dev, int argc, char * const argv[])
+{
+ struct sysreset_ops *ops = sysreset_get_ops(dev);
+
+ if (!ops->request_arg)
+ return -ENOSYS;
+
+ return ops->request_arg(dev, argc, argv);
+}
+
int sysreset_get_status(struct udevice *dev, char *buf, int size)
{
struct sysreset_ops *ops = sysreset_get_ops(dev);
@@ -71,6 +81,24 @@ int sysreset_walk(enum sysreset_t type)
return ret;
}
+int sysreset_walk_arg(int argc, char * const argv[])
+{
+ struct udevice *dev;
+ int ret = -ENOSYS;
+
+ while (ret != -EINPROGRESS && ret != -EPROTONOSUPPORT) {
+ for (uclass_first_device(UCLASS_SYSRESET, &dev);
+ dev;
+ uclass_next_device(&dev)) {
+ ret = sysreset_request_arg(dev, argc, argv);
+ if (ret == -EINPROGRESS || ret == -EPROTONOSUPPORT)
+ break;
+ }
+ }
+
+ return ret;
+}
+
int sysreset_get_last_walk(void)
{
struct udevice *dev;
@@ -132,6 +160,10 @@ int do_reset(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
printf("resetting ...\n");
mdelay(100);
+ if (argc > 1)
+ if (sysreset_walk_arg(argc, argv) == -EINPROGRESS)
+ return 0;
+
sysreset_walk_halt(reset_type);
return 0;
diff --git a/include/sysreset.h b/include/sysreset.h
index ff20abdeed3..d1cc9ebc542 100644
--- a/include/sysreset.h
+++ b/include/sysreset.h
@@ -43,6 +43,24 @@ struct sysreset_ops {
* (in which case this method will not actually return)
*/
int (*request)(struct udevice *dev, enum sysreset_t type);
+
+ /**
+ * @request_arg: Reset handler implementations that might need to
process
+ * arguments given to the 'reset' command.
+ *
+ * Note that this function may return before the reset takes effect.
+ *
+ * @dev: Device to be used for system reset
+ * @argc: No. of items in @argv
+ * @argv: Arguments given to 'reset' command
+ * Return:
+ * -EINPROGRESS if the reset has started and will complete soon
+ * -EPROTONOSUPPORT if not supported by this device
+ * 0 if the reset has already happened
+ * (in which case this method will not actually return)
+ */
+ int (*request_arg)(struct udevice *dev, int argc, char * const argv[]);
+
/**
* @get_status: get printable reset status information
*
--
2.34.1
