mån 2014-03-24 klockan 01:18 +0100 skrev Henrik Nordström:
sön 2014-03-16 klockan 17:34 + skrev Ian Campbell:
This code hasn't been called since the calls to it randomly disappeared in
71e6be0ccbd5 sunxi: get u-boot mmc spl work and 4d29a5dd7414 sunxi:
further
clean sunxi platform. It seems to have only ever been used as test code
anyway.
It's left as a reminder to implement something that uses it. Almost
every device have LRADC keys and could be very useful for controlling
boot process (i.e. boot recoery/failsafe mode).
I guess a command that sets a variable with the current pressed key
value would be suitable.
I.e. something like this patch:
From ee16a3deaa41aa5b10ffa586cf1353a3c88468f9 Mon Sep 17 00:00:00 2001
From: Henrik Nordstrom hen...@henriknordstrom.net
Date: Mon, 24 Mar 2014 02:02:29 +0100
Subject: [PATCH] sunxi: readkey command for reading lradc key value
readkey variable
reads ldarc key value into specified variable to allow scripts
to take actions based on lradc key presses.
Signed-off-by: Henrik Nordstrom hen...@henriknordstrom.net
---
arch/arm/cpu/armv7/sunxi/board.c | 3 +++
arch/arm/cpu/armv7/sunxi/key.c | 18 ++
2 files changed, 21 insertions(+)
diff --git a/arch/arm/cpu/armv7/sunxi/board.c
b/arch/arm/cpu/armv7/sunxi/board.c
index 94c5cd0..6ad4345 100644
--- a/arch/arm/cpu/armv7/sunxi/board.c
+++ b/arch/arm/cpu/armv7/sunxi/board.c
@@ -98,6 +98,9 @@ void s_init(void)
clock_init();
timer_init();
gpio_init();
+#ifndef CONFIG_SPL_BUILD
+ sunxi_key_init();
+#endif
#ifdef CONFIG_SPL_BUILD
gd = gdata;
diff --git a/arch/arm/cpu/armv7/sunxi/key.c
b/arch/arm/cpu/armv7/sunxi/key.c
index fcdabd3..578a519 100644
--- a/arch/arm/cpu/armv7/sunxi/key.c
+++ b/arch/arm/cpu/armv7/sunxi/key.c
@@ -52,3 +52,21 @@ u32 sunxi_read_key(void)
writel(ints, sunxi_key_base-ints);
return key;
}
+
+int do_readkey(cmd_tbl_t *cmdtp, int flag, int argc, const char
*argv[])
+{
+ u32 key;
+
+ if (argc 2) {
+ printf(usage: readkey variable\n);
+ }
+ setenv_ulong(argv[1], sunxi_read_key());
+
+ return 0;
+}
+
+U_BOOT_CMD(
+ readkey, 2, 1, do_readkey,
+ Read LDADC key value into specified variable,
+
+);
--
1.8.5.3
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