On Wed, Jun 18, 2014 at 1:52 PM, Fabio Estevam <festevam@xxxxxxxxx> wrote:
> MPC does not use it only because no one has converted it yet :-)
Okay. That makes sense :-)
> Take a look at the existing bindings of i.MX. You probably only needs
> to add the drivers/usb/chipidea/ci_hdrc_imx.c equivalent for MPC.
That doesn't look too bad. I might take a crack at writing a binding
for the 83xx series. If things go well look for a patch. I do have
several 83xx custom boards I could try it on.
For the sake of completeness in case some other poor sap finds this
in a few months, I was able to get USB Gadget functioning on the v3.10
kernel with the following 2 complete hacks and 1 back port:
diff --git a/drivers/usb/gadget/fsl_udc_core.c
b/drivers/usb/gadget/fsl_udc_core.c
index dcd0b07..a2f26cd 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -1219,6 +1219,10 @@ static int fsl_pullup(struct usb_gadget
*gadget, int is_on)
struct fsl_udc *udc;
udc = container_of(gadget, struct fsl_udc, gadget);
+
+ if (!udc->vbus_active)
+ return -EOPNOTSUPP;
+
udc->softconnect = (is_on != 0);
if (can_pullup(udc))
fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
diff --git a/arch/powerpc/include/asm/dma-mapping.h
b/arch/powerpc/include/asm/dma-mapping.h
index 150866b..6f7367a 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -87,6 +87,9 @@ static inline struct dma_map_ops *get_dma_ops(struct
device *dev)
if (unlikely(dev == NULL))
return NULL;
+ if (dev->archdata.dma_ops == NULL)
+ return &dma_direct_ops;
+
return dev->archdata.dma_ops;
}
diff --git a/drivers/usb/gadget/fsl_udc_core.c
b/drivers/usb/gadget/fsl_udc_core.c
index 28e4fc9..3385e8a 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -2662,7 +2662,7 @@ MODULE_DEVICE_TABLE(platform, fsl_udc_devtype);
static struct platform_driver udc_driver = {
.remove = __exit_p(fsl_udc_remove),
/* Just for FSL i.mx SoC currently */
- .id_table = fsl_udc_devtype,
+ /* .id_table = fsl_udc_devtype, */
/* these suspend and resume are not usb suspend and resume */
.suspend = fsl_udc_suspend,
.resume = fsl_udc_resume,
Not this code is hacky and probably not something you would want to
use in production,
but for the test system I am running it was sufficient to fix my problem.
Thanks for your help Fabio and Felipe!
Barry
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