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usb: dwc2: usb chunk_msg() for control transfers too

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This removes duplicated code.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
This commit is contained in:
Stephen Warren 2015-03-07 22:48:53 -07:00 committed by Marek Vasut
parent 7b5e504dae
commit ee83755401
1 changed files with 19 additions and 95 deletions
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114
drivers/usb/host/dwc2.c
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@ -767,7 +767,7 @@ int chunk_msg(struct usb_device *dev, unsigned long pipe, int *pid, int in,
return -EINVAL; return -EINVAL;
} }
while ((done < len) && !stop_transfer) { do {
/* Initialize channel */ /* Initialize channel */
dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, devnum, ep, in, eptype, dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, devnum, ep, in, eptype,
max); max);
@ -819,7 +819,7 @@ int chunk_msg(struct usb_device *dev, unsigned long pipe, int *pid, int in,
if (sub) if (sub)
stop_transfer = 1; stop_transfer = 1;
} }
} } while ((done < len) && !stop_transfer);
if (done && in) if (done && in)
memcpy(buffer, aligned_buffer, done); memcpy(buffer, aligned_buffer, done);
@ -852,14 +852,9 @@ int submit_bulk_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer, int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
int len, struct devrequest *setup) int len, struct devrequest *setup)
{ {
struct dwc2_hc_regs *hc_regs = &regs->hc_regs[DWC2_HC_CHANNEL];
int done = 0;
int devnum = usb_pipedevice(pipe); int devnum = usb_pipedevice(pipe);
int ep = usb_pipeendpoint(pipe); int ep = usb_pipeendpoint(pipe);
int max = usb_maxpacket(dev, pipe); int pid, ret, act_len;
int ret;
uint32_t sub;
/* For CONTROL endpoint pid should start with DATA1 */ /* For CONTROL endpoint pid should start with DATA1 */
int status_direction; int status_direction;
@ -869,75 +864,21 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
return dwc_otg_submit_rh_msg(dev, pipe, buffer, len, setup); return dwc_otg_submit_rh_msg(dev, pipe, buffer, len, setup);
} }
if (len > DWC2_DATA_BUF_SIZE) { pid = DWC2_HC_PID_SETUP;
printf("%s: %d is more then available buffer size(%d)\n", ret = chunk_msg(dev, pipe, &pid, 0, setup, 8);
__func__, len, DWC2_DATA_BUF_SIZE); if (ret)
dev->status = 0; return ret;
dev->act_len = 0;
return -EINVAL;
}
/* Initialize channel, OUT for setup buffer */
dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, devnum, ep, 0,
DWC2_HCCHAR_EPTYPE_CONTROL, max);
/* SETUP stage */
writel((8 << DWC2_HCTSIZ_XFERSIZE_OFFSET) |
(1 << DWC2_HCTSIZ_PKTCNT_OFFSET) |
(DWC2_HC_PID_SETUP << DWC2_HCTSIZ_PID_OFFSET),
&hc_regs->hctsiz);
writel((uint32_t)setup, &hc_regs->hcdma);
/* Set host channel enable after all other setup is complete. */
clrsetbits_le32(&hc_regs->hcchar, DWC2_HCCHAR_MULTICNT_MASK |
DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS,
(1 << DWC2_HCCHAR_MULTICNT_OFFSET) | DWC2_HCCHAR_CHEN);
ret = wait_for_chhltd(&sub, NULL);
if (ret) {
dev->status = 0;
dev->act_len = 0;
return -EINVAL;
}
/* Clear interrupts */
writel(0, &hc_regs->hcintmsk);
writel(0xFFFFFFFF, &hc_regs->hcint);
if (buffer) { if (buffer) {
/* DATA stage */
dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, devnum, ep,
usb_pipein(pipe),
DWC2_HCCHAR_EPTYPE_CONTROL, max);
/* TODO: check if len < 64 */
control_data_toggle[devnum][ep] = DWC2_HC_PID_DATA1; control_data_toggle[devnum][ep] = DWC2_HC_PID_DATA1;
writel((len << DWC2_HCTSIZ_XFERSIZE_OFFSET) | ret = chunk_msg(dev, pipe, &control_data_toggle[devnum][ep],
(1 << DWC2_HCTSIZ_PKTCNT_OFFSET) | usb_pipein(pipe), buffer, len);
(control_data_toggle[devnum][ep] << if (ret)
DWC2_HCTSIZ_PID_OFFSET), return ret;
&hc_regs->hctsiz); act_len = dev->act_len;
writel((uint32_t)buffer, &hc_regs->hcdma);
/* Set host channel enable after all other setup is complete */
clrsetbits_le32(&hc_regs->hcchar, DWC2_HCCHAR_MULTICNT_MASK |
DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS,
(1 << DWC2_HCCHAR_MULTICNT_OFFSET) |
DWC2_HCCHAR_CHEN);
ret = wait_for_chhltd(&sub, &control_data_toggle[devnum][ep]);
if (ret) {
dev->status = 0;
dev->act_len = 0;
return -EINVAL;
}
done = len;
if (usb_pipein(pipe))
done -= sub;
} /* End of DATA stage */ } /* End of DATA stage */
else
act_len = 0;
/* STATUS stage */ /* STATUS stage */
if ((len == 0) || usb_pipeout(pipe)) if ((len == 0) || usb_pipeout(pipe))
@ -945,29 +886,12 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer,
else else
status_direction = 0; status_direction = 0;
dwc_otg_hc_init(regs, DWC2_HC_CHANNEL, devnum, ep, pid = DWC2_HC_PID_DATA1;
status_direction, DWC2_HCCHAR_EPTYPE_CONTROL, max); ret = chunk_msg(dev, pipe, &pid, status_direction, status_buffer, 0);
if (ret)
return ret;
writel((1 << DWC2_HCTSIZ_PKTCNT_OFFSET) | dev->act_len = act_len;
(DWC2_HC_PID_DATA1 << DWC2_HCTSIZ_PID_OFFSET),
&hc_regs->hctsiz);
writel((uint32_t)status_buffer, &hc_regs->hcdma);
/* Set host channel enable after all other setup is complete. */
clrsetbits_le32(&hc_regs->hcchar, DWC2_HCCHAR_MULTICNT_MASK |
DWC2_HCCHAR_CHEN | DWC2_HCCHAR_CHDIS,
(1 << DWC2_HCCHAR_MULTICNT_OFFSET) | DWC2_HCCHAR_CHEN);
ret = wait_for_chhltd(&sub, NULL);
if (ret) {
dev->status = 0;
dev->act_len = 0;
return -EINVAL;
}
dev->act_len = done;
dev->status = 0;
return 0; return 0;
} }