From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH] USB i.MX: Add chipidea gadget support
Date: Thu, 14 Feb 2013 10:09:25 +0100 [thread overview]
Message-ID: <1360832965-7378-1-git-send-email-s.hauer@pengutronix.de> (raw)
This adds USB gadget support to the i.MX chipidea driver. Basically
we have to add a register function to the fsl udc driver and call
this from the chipidea driver if device mode is selected.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/usb/gadget/fsl_udc.c | 11 +++++++++--
drivers/usb/imx/chipidea-imx.c | 6 ++----
include/usb/fsl_usb2.h | 6 ++++++
3 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/gadget/fsl_udc.c b/drivers/usb/gadget/fsl_udc.c
index 0a7c3ae..968c58f 100644
--- a/drivers/usb/gadget/fsl_udc.c
+++ b/drivers/usb/gadget/fsl_udc.c
@@ -2257,7 +2257,7 @@ static struct poller_struct poller = {
.func = fsl_udc_poller
};
-static int fsl_udc_probe(struct device_d *dev)
+int ci_udc_register(struct device_d *dev, void __iomem *regs)
{
int ret, i;
u32 dccparams;
@@ -2265,7 +2265,7 @@ static int fsl_udc_probe(struct device_d *dev)
udc_controller = xzalloc(sizeof(*udc_controller));
udc_controller->stopped = 1;
- dr_regs = dev_request_mem_region(dev, 0);
+ dr_regs = regs;
/* Read Device Controller Capability Parameters register */
dccparams = readl(&dr_regs->dccparams);
@@ -2326,6 +2326,13 @@ err_out:
return ret;
}
+static int fsl_udc_probe(struct device_d *dev)
+{
+ void __iomem *regs = dev_request_mem_region(dev, 0);
+
+ return ci_udc_register(dev, regs);
+}
+
static struct driver_d fsl_udc_driver = {
.name = "fsl-udc",
.probe = fsl_udc_probe,
diff --git a/drivers/usb/imx/chipidea-imx.c b/drivers/usb/imx/chipidea-imx.c
index de80c36..ec4db27 100644
--- a/drivers/usb/imx/chipidea-imx.c
+++ b/drivers/usb/imx/chipidea-imx.c
@@ -19,6 +19,7 @@
#include <usb/ehci.h>
#include <usb/chipidea-imx.h>
#include <usb/ulpi.h>
+#include <usb/fsl_usb2.h>
#define MXC_EHCI_PORTSC_MASK ((0xf << 28) | (1 << 25))
@@ -99,10 +100,7 @@ static int imx_chipidea_probe(struct device_d *dev)
if (pdata->mode == IMX_USB_MODE_HOST) {
ret = ehci_register(dev, &data);
} else {
- /*
- * Not yet implemented. Register USB gadget driver here.
- */
- ret = -ENOSYS;
+ ret = ci_udc_register(dev, base);
}
return ret;
diff --git a/include/usb/fsl_usb2.h b/include/usb/fsl_usb2.h
index fd37ade..dec3933 100644
--- a/include/usb/fsl_usb2.h
+++ b/include/usb/fsl_usb2.h
@@ -1,3 +1,6 @@
+#ifndef __USB_FSL_USB2_H
+#define __USB_FSL_USB2_H
+
enum fsl_usb2_operating_modes {
FSL_USB2_MPH_HOST,
FSL_USB2_DR_HOST,
@@ -20,3 +23,6 @@ struct fsl_usb2_platform_data {
unsigned int port_enables;
};
+int ci_udc_register(struct device_d *dev, void __iomem *regs);
+
+#endif /* __USB_FSL_USB2_H */
--
1.7.10.4
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