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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2011-10-10 22:06:46 -0700 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2011-10-13 20:41:49 +0300 |
| commit | eb05191f6a9aba8344a0d5f28642b5ecf44d49a4 (patch) | |
| tree | d86743fd474d71d7dfd1bf0af827cb404b3ed7e4 /drivers/usb/renesas_usbhs/common.c | |
| parent | a9be4a45627c0eaa5f3f16987243530f4df6b514 (diff) | |
| download | lwn-eb05191f6a9aba8344a0d5f28642b5ecf44d49a4.tar.gz lwn-eb05191f6a9aba8344a0d5f28642b5ecf44d49a4.zip | |
usb: gadget: renesas_usbhs: add usbhs_set_device_speed() support for host
mod_host needs device speed setup function
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/renesas_usbhs/common.c')
| -rw-r--r-- | drivers/usb/renesas_usbhs/common.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c index 895eb44a1a51..c3aef40fa9e5 100644 --- a/drivers/usb/renesas_usbhs/common.c +++ b/drivers/usb/renesas_usbhs/common.c @@ -227,6 +227,48 @@ static void usbhsc_bus_init(struct usbhs_priv *priv) } /* + * device configuration + */ +int usbhs_set_device_speed(struct usbhs_priv *priv, int devnum, + u16 upphub, u16 hubport, u16 speed) +{ + struct device *dev = usbhs_priv_to_dev(priv); + u16 usbspd = 0; + u32 reg = DEVADD0 + (2 * devnum); + + if (devnum > 10) { + dev_err(dev, "cannot set speed to unknown device %d\n", devnum); + return -EIO; + } + + if (upphub > 0xA) { + dev_err(dev, "unsupported hub number %d\n", upphub); + return -EIO; + } + + switch (speed) { + case USB_SPEED_LOW: + usbspd = USBSPD_SPEED_LOW; + break; + case USB_SPEED_FULL: + usbspd = USBSPD_SPEED_FULL; + break; + case USB_SPEED_HIGH: + usbspd = USBSPD_SPEED_HIGH; + break; + default: + dev_err(dev, "unsupported speed %d\n", speed); + return -EIO; + } + + usbhs_write(priv, reg, UPPHUB(upphub) | + HUBPORT(hubport)| + USBSPD(usbspd)); + + return 0; +} + +/* * local functions */ static void usbhsc_set_buswait(struct usbhs_priv *priv) |