From 1cc03c5c53c06a904ff1cea325e0202ab6313ee4 Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Mon, 25 Aug 2014 11:07:28 +0200 Subject: dfu: Provide means to find difference between dfu-util -e and -R This commit provides distinction between DFU device detach and reset. The -R behavior is preserved with proper handling of the dfu-util's -e switch, which detach the DFU device. By running dfu-util -e; one can force device to finish the execution of dfu command on target and execute some other scripted commands. Moreover, some naming has been changed - the dfu_reset() method now is known as dfu_detach(). New name better reflects the purpose of the code. It was also necessary to increase the number of usb_gadget_handle_interrupts() calls since we also must wait for detection of the USB reset event. Example usage: 1. -e (detach) switch dfu-util -a0 -D file1.bin;dfu-util -a3 -D uImage;dfu-util -e access to u-boot prompt. 2. -R (reset) switch dfu-util -a0 -D file1.bin;dfu-util -R -a3 -D uImage target board reset Signed-off-by: Lukasz Majewski Reviewed-by: Stephen Warren Tested-by: Stephen Warren --- drivers/dfu/dfu.c | 31 ++++++++++++++++++++++++++----- 1 file changed, 26 insertions(+), 5 deletions(-) (limited to 'drivers/dfu') diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index 3512b149c5..55e6a83b9a 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -17,20 +17,41 @@ #include #include -static bool dfu_reset_request; +static bool dfu_detach_request; static LIST_HEAD(dfu_list); static int dfu_alt_num; static int alt_num_cnt; static struct hash_algo *dfu_hash_algo; -bool dfu_reset(void) +/* + * The purpose of the dfu_usb_get_reset() function is to + * provide information if after USB_DETACH request + * being sent the dfu-util performed reset of USB + * bus. + * + * Described behaviour is the only way to distinct if + * user has typed -e (detach) or -R (reset) when invoking + * dfu-util command. + * + */ +__weak bool dfu_usb_get_reset(void) +{ + return true; +} + +bool dfu_detach(void) +{ + return dfu_detach_request; +} + +void dfu_trigger_detach(void) { - return dfu_reset_request; + dfu_detach_request = true; } -void dfu_trigger_reset() +void dfu_clear_detach(void) { - dfu_reset_request = true; + dfu_detach_request = false; } static int dfu_find_alt_num(const char *s) -- cgit v1.2.3