From e1eb3eb8b02c5be35ea1fedccc6c9c6d2c9b0165 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 26 Feb 2015 11:26:09 -0600 Subject: [PATCH] usb: musb: core: refactor IRQ enable/disable to separate functions sometimes we want to just mask/unmask interrupts without touching devctl register. For those cases, let's introduce musb_enable_interrupts and musb_disable_interrupts() Tested-by: Bin Liu Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_core.c | 37 +++++++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 11 deletions(-) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index b86e975cba2b..8ae24266f1a8 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -507,7 +507,9 @@ void musb_hnp_stop(struct musb *musb) musb->port1_status &= ~(USB_PORT_STAT_C_CONNECTION << 16); } +static void musb_disable_interrupts(struct musb *musb); static void musb_generic_disable(struct musb *musb); + /* * Interrupt Service Routine to record USB "global" interrupts. * Since these do not happen often and signify things of @@ -977,7 +979,7 @@ b_host: /*-------------------------------------------------------------------------*/ -static void musb_generic_disable(struct musb *musb) +static void musb_disable_interrupts(struct musb *musb) { void __iomem *mbase = musb->mregs; u16 temp; @@ -989,16 +991,35 @@ static void musb_generic_disable(struct musb *musb) musb->intrrxe = 0; musb_writew(mbase, MUSB_INTRRXE, 0); - /* off */ - musb_writeb(mbase, MUSB_DEVCTL, 0); - /* flush pending interrupts */ temp = musb_readb(mbase, MUSB_INTRUSB); temp = musb_readw(mbase, MUSB_INTRTX); temp = musb_readw(mbase, MUSB_INTRRX); +} + +static void musb_enable_interrupts(struct musb *musb) +{ + void __iomem *regs = musb->mregs; + + /* Set INT enable registers, enable interrupts */ + musb->intrtxe = musb->epmask; + musb_writew(regs, MUSB_INTRTXE, musb->intrtxe); + musb->intrrxe = musb->epmask & 0xfffe; + musb_writew(regs, MUSB_INTRRXE, musb->intrrxe); + musb_writeb(regs, MUSB_INTRUSBE, 0xf7); } +static void musb_generic_disable(struct musb *musb) +{ + void __iomem *mbase = musb->mregs; + + musb_disable_interrupts(musb); + + /* off */ + musb_writeb(mbase, MUSB_DEVCTL, 0); +} + /* * Program the HDRC to start (enable interrupts, dma, etc.). */ @@ -1009,13 +1030,7 @@ void musb_start(struct musb *musb) dev_dbg(musb->controller, "<== devctl %02x\n", devctl); - /* Set INT enable registers, enable interrupts */ - musb->intrtxe = musb->epmask; - musb_writew(regs, MUSB_INTRTXE, musb->intrtxe); - musb->intrrxe = musb->epmask & 0xfffe; - musb_writew(regs, MUSB_INTRRXE, musb->intrrxe); - musb_writeb(regs, MUSB_INTRUSBE, 0xf7); - + musb_enable_interrupts(musb); musb_writeb(regs, MUSB_TESTMODE, 0); /* put into basic highspeed mode and start session */ -- 2.39.5