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usb: gadget: consider link speed for bMaxPower

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The USB 2.0 specification says that bMaxPower is the maximum power
consumption expressed in 2 mA units and the USB 3.0 specification says
that it is expressed in 8 mA units.

This patch renames bMaxPower to MaxPower and the various /2 and *2 are
removed. Before reporting the config descriptor, the proper value is
computer based on the speed, all in-tree users are updated. MaxPower is
also increased to u16 so we can store the nokia gadget value which is
larger than the max value allowed for u8.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior
2012-12-03 20:07:05 +01:00
committed by Felipe Balbi
parent 98f3a1b907
commit 8f900a9a6e
5 changed files with 30 additions and 10 deletions
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drivers/usb/gadget/webcam.c
+1 -1
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@@ -336,7 +336,7 @@ static struct usb_configuration webcam_config_driver = {
.bConfigurationValue = 1,
.iConfiguration = 0, /* dynamic */
.bmAttributes = USB_CONFIG_ATT_SELFPOWER,
.bMaxPower = CONFIG_USB_GADGET_VBUS_DRAW / 2,
.MaxPower = CONFIG_USB_GADGET_VBUS_DRAW,
};
static int /* __init_or_exit */