From 6047a3a9c9cf88c38b0b7b99bfeb4edf6661acc8 Mon Sep 17 00:00:00 2001 From: Siarhei Siamashka Date: Sun, 25 Oct 2015 06:44:47 +0200 Subject: [PATCH] sunxi: musb: Implement dfu_usb_get_reset() This is necessary to distinguish between the "dfu-util --detach" and the "dfu-util --reset" requests. The default weak implementation of dfu_usb_get_reset() unconditionally reboots the device, but we want to be able to continue the boot.scr execution after writing the kernel, fdt and ramdisk to RAM via DFU. Signed-off-by: Siarhei Siamashka Reviewed-by: Hans de Goede Signed-off-by: Hans de Goede --- drivers/usb/musb-new/sunxi.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c index a146c0861f..5eb8d19b74 100644 --- a/drivers/usb/musb-new/sunxi.c +++ b/drivers/usb/musb-new/sunxi.c @@ -165,6 +165,17 @@ static void USBC_ConfigFIFO_Base(void) writel(reg_value, SUNXI_SRAMC_BASE + 0x04); } +/****************************************************************************** + * Needed for the DFU polling magic + ******************************************************************************/ + +static u8 last_int_usb; + +bool dfu_usb_get_reset(void) +{ + return !!(last_int_usb & MUSB_INTR_RESET); +} + /****************************************************************************** * MUSB Glue code ******************************************************************************/ @@ -176,6 +187,7 @@ static irqreturn_t sunxi_musb_interrupt(int irq, void *__hci) /* read and flush interrupts */ musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB); + last_int_usb = musb->int_usb; if (musb->int_usb) musb_writeb(musb->mregs, MUSB_INTRUSB, musb->int_usb); musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX); -- 2.39.5