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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-19 13:14:34 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-19 13:14:34 -0700 |
| commit | f7a0fd56e4f58aec3300082fc10433052e2f1863 (patch) | |
| tree | 4b3348f4866f6b3417f456a298229d63d4581424 /drivers/usb/musb/musb_core.c | |
| parent | 5e1e704a7de14ae79dc4d983dbbcab67064960c9 (diff) | |
| parent | 31d141e3a666269a3b6fcccddb0351caf7454240 (diff) | |
| download | talos-op-linux-f7a0fd56e4f58aec3300082fc10433052e2f1863.tar.gz talos-op-linux-f7a0fd56e4f58aec3300082fc10433052e2f1863.zip | |
Merge 3.12-rc6 into staging-next.
We want these fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb/musb_core.c')
| -rw-r--r-- | drivers/usb/musb/musb_core.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 18e877ffe7b7..cd70cc886171 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -922,6 +922,52 @@ static void musb_generic_disable(struct musb *musb) } /* + * Program the HDRC to start (enable interrupts, dma, etc.). + */ +void musb_start(struct musb *musb) +{ + void __iomem *regs = musb->mregs; + u8 devctl = musb_readb(regs, MUSB_DEVCTL); + + 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_writeb(regs, MUSB_TESTMODE, 0); + + /* put into basic highspeed mode and start session */ + musb_writeb(regs, MUSB_POWER, MUSB_POWER_ISOUPDATE + | MUSB_POWER_HSENAB + /* ENSUSPEND wedges tusb */ + /* | MUSB_POWER_ENSUSPEND */ + ); + + musb->is_active = 0; + devctl = musb_readb(regs, MUSB_DEVCTL); + devctl &= ~MUSB_DEVCTL_SESSION; + + /* session started after: + * (a) ID-grounded irq, host mode; + * (b) vbus present/connect IRQ, peripheral mode; + * (c) peripheral initiates, using SRP + */ + if (musb->port_mode != MUSB_PORT_MODE_HOST && + (devctl & MUSB_DEVCTL_VBUS) == MUSB_DEVCTL_VBUS) { + musb->is_active = 1; + } else { + devctl |= MUSB_DEVCTL_SESSION; + } + + musb_platform_enable(musb); + musb_writeb(regs, MUSB_DEVCTL, devctl); +} + +/* * Make the HDRC stop (disable interrupts, etc.); * reversible by musb_start * called on gadget driver unregister |
