diff options
| author | Matthieu CASTET <matthieu.castet@parrot.com> | 2010-09-06 18:26:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-22 10:21:29 -0700 |
| commit | 65fd42724aee31018b0bb53f4cb04971423be664 (patch) | |
| tree | 54fa9d5551875be65d979ea34d58e8313461d6f5 /drivers/usb/host/ehci-mxc.c | |
| parent | eabf0f5f09b1f1538d22c14aa0a703c11791bd1e (diff) | |
| download | linux-65fd42724aee31018b0bb53f4cb04971423be664.tar.gz | |
USB: ehci tdi : let's tdi_reset set host mode
tdi_reset is already taking care of setting host mode for tdi devices. Don't duplicate code in platform driver. Make ehci_halt a nop if the controller is not in host mode (otherwise it will fail), and let's ehci_reset do the tdi_reset. We need to move hcd->has_tt flags before ehci_halt, in order ehci_halt knows we are a tdi device. Before the setup routine was doing : - put controller in host mode - ehci_halt - ehci_init - hcd->has_tt = 1; - ehci_reset Now we do : - hcd->has_tt = 1; - ehci_halt - ehci_init - ehci_reset PS : now we handle correctly the device -> host transition. Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.com> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/host/ehci-mxc.c')
| -rw-r--r-- | drivers/usb/host/ehci-mxc.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c index a8ad8ac120a2..ac9c4d7c44af 100644 --- a/drivers/usb/host/ehci-mxc.c +++ b/drivers/usb/host/ehci-mxc.c @@ -26,9 +26,6 @@ #include <mach/mxc_ehci.h> #define ULPI_VIEWPORT_OFFSET 0x170 -#define PORTSC_OFFSET 0x184 -#define USBMODE_OFFSET 0x1a8 -#define USBMODE_CM_HOST 3 struct ehci_mxc_priv { struct clk *usbclk, *ahbclk; @@ -51,6 +48,8 @@ static int ehci_mxc_setup(struct usb_hcd *hcd) /* cache this readonly data; minimize chip reads */ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + hcd->has_tt = 1; + retval = ehci_halt(ehci); if (retval) return retval; @@ -60,8 +59,6 @@ static int ehci_mxc_setup(struct usb_hcd *hcd) if (retval) return retval; - hcd->has_tt = 1; - ehci->sbrn = 0x20; ehci_reset(ehci); @@ -191,12 +188,8 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev) clk_enable(priv->ahbclk); } - /* set USBMODE to host mode */ - temp = readl(hcd->regs + USBMODE_OFFSET); - writel(temp | USBMODE_CM_HOST, hcd->regs + USBMODE_OFFSET); - /* set up the PORTSCx register */ - writel(pdata->portsc, hcd->regs + PORTSC_OFFSET); + ehci_writel(ehci, pdata->portsc, &ehci->regs->port_status[0]); mdelay(10); /* setup specific usb hw */ |