In most cases, userspace will attempt to power off the device with HALT instead of POWER_OFF, which triggers a reset instead of a proper power off from the TWL4030. Hence, it is up to the bootloader to actually turn the device off when there is no reason to turn it on.
A reboot identified with the OMAP reboot mode bits set is acceptable, as well as a power on reason from either the power button, USB or charger plug. Other cases should trigger a power off. Note that for the U-Boot reset command to take effect, we have to fill-in the OMAP reboot bits. Signed-off-by: Paul Kocialkowski <[email protected]> --- board/lge/sniper/sniper.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/board/lge/sniper/sniper.c b/board/lge/sniper/sniper.c index 97c2ed0..c94a3fa 100644 --- a/board/lge/sniper/sniper.c +++ b/board/lge/sniper/sniper.c @@ -94,6 +94,7 @@ int misc_init_r(void) char serial_string[17] = { 0 }; char reboot_mode[2] = { 0 }; u32 dieid[4] = { 0 }; + unsigned char data = 0; /* Power button reset init */ @@ -107,6 +108,18 @@ int misc_init_r(void) setenv("reboot-mode", (char *)reboot_mode); omap_reboot_mode_clear(); + } else { + /* + * When not rebooting, valid power on reasons are either the + * power button, charger plug or USB plug. + */ + + data |= twl4030_input_power_button(); + data |= twl4030_input_charger(); + data |= twl4030_input_usb(); + + if (!data) + twl4030_power_off(); } /* Serial number */ @@ -145,6 +158,11 @@ void get_board_serial(struct tag_serialnr *serialnr) } } +void reset_misc(void) +{ + omap_reboot_mode_store('u'); +} + int fb_set_reboot_flag(void) { return omap_reboot_mode_store('b'); -- 1.9.1 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
