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usb: dwc3: remove our homebrew state mechanism 

We can reuse the generic implementation via
our struct usb_gadget.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2013-01-25 11:28:19 +02:00
parent 14cd592f72
commit fdba5aa54c
2 changed files with 17 additions and 24 deletions
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7
drivers/usb/dwc3/core.h
View File

@ -494,12 +494,6 @@ enum dwc3_link_state {
DWC3_LINK_STATE_MASK = 0x0f,
};
enum dwc3_device_state {
DWC3_DEFAULT_STATE,
DWC3_ADDRESS_STATE,
DWC3_CONFIGURED_STATE,
};
/* TRB Length, PCM and Status */
#define DWC3_TRB_SIZE_MASK (0x00ffffff)
#define DWC3_TRB_SIZE_LENGTH(n) ((n) & DWC3_TRB_SIZE_MASK)
@ -721,7 +715,6 @@ struct dwc3 {
enum dwc3_ep0_next ep0_next_event;
enum dwc3_ep0_state ep0state;
enum dwc3_link_state link_state;
enum dwc3_device_state dev_state;
u16 isoch_delay;
u16 u2sel;

34
drivers/usb/dwc3/ep0.c
View File

@ -394,10 +394,13 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
u32 wIndex;
u32 reg;
int ret;
enum usb_device_state state;
wValue = le16_to_cpu(ctrl->wValue);
wIndex = le16_to_cpu(ctrl->wIndex);
recip = ctrl->bRequestType & USB_RECIP_MASK;
state = dwc->gadget.state;
switch (recip) {
case USB_RECIP_DEVICE:
@ -409,7 +412,7 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
* default control pipe
*/
case USB_DEVICE_U1_ENABLE:
if (dwc->dev_state != DWC3_CONFIGURED_STATE)
if (state != USB_STATE_CONFIGURED)
return -EINVAL;
if (dwc->speed != DWC3_DSTS_SUPERSPEED)
return -EINVAL;
@ -423,7 +426,7 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
break;
case USB_DEVICE_U2_ENABLE:
if (dwc->dev_state != DWC3_CONFIGURED_STATE)
if (state != USB_STATE_CONFIGURED)
return -EINVAL;
if (dwc->speed != DWC3_DSTS_SUPERSPEED)
return -EINVAL;
@ -493,6 +496,7 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc,
static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
{
enum usb_device_state state = dwc->gadget.state;
u32 addr;
u32 reg;
@ -502,7 +506,7 @@ static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
return -EINVAL;
}
if (dwc->dev_state == DWC3_CONFIGURED_STATE) {
if (state == USB_STATE_CONFIGURED) {
dev_dbg(dwc->dev, "trying to set address when configured\n");
return -EINVAL;
}
@ -512,13 +516,10 @@ static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
reg |= DWC3_DCFG_DEVADDR(addr);
dwc3_writel(dwc->regs, DWC3_DCFG, reg);
if (addr) {
dwc->dev_state = DWC3_ADDRESS_STATE;
if (addr)
usb_gadget_set_state(&dwc->gadget, USB_STATE_ADDRESS);
} else {
dwc->dev_state = DWC3_DEFAULT_STATE;
else
usb_gadget_set_state(&dwc->gadget, USB_STATE_DEFAULT);
}
return 0;
}
@ -535,6 +536,7 @@ static int dwc3_ep0_delegate_req(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
{
enum usb_device_state state = dwc->gadget.state;
u32 cfg;
int ret;
u32 reg;
@ -542,16 +544,15 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
dwc->start_config_issued = false;
cfg = le16_to_cpu(ctrl->wValue);
switch (dwc->dev_state) {
case DWC3_DEFAULT_STATE:
switch (state) {
case USB_STATE_DEFAULT:
return -EINVAL;
break;
case DWC3_ADDRESS_STATE:
case USB_STATE_ADDRESS:
ret = dwc3_ep0_delegate_req(dwc, ctrl);
/* if the cfg matches and the cfg is non zero */
if (cfg && (!ret || (ret == USB_GADGET_DELAYED_STATUS))) {
dwc->dev_state = DWC3_CONFIGURED_STATE;
usb_gadget_set_state(&dwc->gadget,
USB_STATE_CONFIGURED);
@ -568,13 +569,11 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
}
break;
case DWC3_CONFIGURED_STATE:
case USB_STATE_CONFIGURED:
ret = dwc3_ep0_delegate_req(dwc, ctrl);
if (!cfg) {
dwc->dev_state = DWC3_ADDRESS_STATE;
if (!cfg)
usb_gadget_set_state(&dwc->gadget,
USB_STATE_ADDRESS);
}
break;
default:
ret = -EINVAL;
@ -629,10 +628,11 @@ static void dwc3_ep0_set_sel_cmpl(struct usb_ep *ep, struct usb_request *req)
static int dwc3_ep0_set_sel(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
{
struct dwc3_ep *dep;
enum usb_device_state state = dwc->gadget.state;
u16 wLength;
u16 wValue;
if (dwc->dev_state == DWC3_DEFAULT_STATE)
if (state == USB_STATE_DEFAULT)
return -EINVAL;
wValue = le16_to_cpu(ctrl->wValue);