Menu/cmd: add sub menu entry command support

this will simplify the creation of navigation link

as this

menu -a -m boot -d "Boot Menu"
menu -a -m network -d "Network settings"
menu -e -a -m network -u boot -d "Back"
menu -e -a -m boot -u network -d "Network settings ->"
menu -e -a -m boot -c reset -R -d "Reset"
menu -e -a -m boot -c clear -d "Exit"
menu -s -m boot

in C

struct menu m_boot = {
	.name = "boot",
	.display = "Boot Menu",
};

struct menu m_network = {
	.name = "network",
	.display = "Network settings",
};

struct menu_entry e_to_network = {
	.display = "Network settings ->",
	.action = menu_action_show,
	.priv = &m_network,
};

struct menu_entry e_to_boot = {
	.display = "Back",
	.action = menu_action_show,
	.priv = &m_boot,
};

struct menu_entry e_reset = {
	.display = "Reset",
	.action = menu_action_run,
	.priv = "reset",
};

struct menu_entry e_exit = {
	.display = "Exit",
	.action = menu_action_run,
	.non_re_ent = 1,
	.priv = "clear",
};

void menu_test(void)
{
	menu_add(&m_boot);
	menu_add(&m_network);
	menu_add_entry(&m_boot, &e_to_network);
	menu_add_entry(&m_boot, &e_reset);
	menu_add_entry(&m_boot, &e_exit);
	menu_add_entry(&m_network, &e_to_boot);
	menu_show(&m_boot);
}

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/common/menu.c b/common/menu.c
index e03e4d1d28..b20164415c 100644
--- a/common/menu.c
+++ b/common/menu.c
@@ -306,6 +306,13 @@ void menu_action_run(struct menu *m, struct menu_entry *me)
 		udelay(1000000);
 }
 
+void menu_action_show(struct menu *m, struct menu_entry *me)
+{
+	struct menu *sm = me->priv;
+
+	menu_show(sm);
+}
+
 static int menu_init(void)
 {
 	INIT_LIST_HEAD(&menus.list);