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path: root/drivers/usb/gadget/s3c-hsudc.c
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Diffstat (limited to 'drivers/usb/gadget/s3c-hsudc.c')
-rw-r--r--drivers/usb/gadget/s3c-hsudc.c69
1 files changed, 53 insertions, 16 deletions
diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c
index 3fa717c5f4b..8d54f893cef 100644
--- a/drivers/usb/gadget/s3c-hsudc.c
+++ b/drivers/usb/gadget/s3c-hsudc.c
@@ -26,6 +26,7 @@
#include <linux/clk.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
+#include <linux/usb/otg.h>
#include <linux/prefetch.h>
#include <mach/regs-s3c2443-clock.h>
@@ -137,6 +138,7 @@ struct s3c_hsudc {
struct usb_gadget_driver *driver;
struct device *dev;
struct s3c24xx_hsudc_platdata *pd;
+ struct otg_transceiver *transceiver;
spinlock_t lock;
void __iomem *regs;
struct resource *mem_rsrc;
@@ -759,11 +761,11 @@ static int s3c_hsudc_ep_enable(struct usb_ep *_ep,
if (!_ep || !desc || hsep->desc || _ep->name == ep0name
|| desc->bDescriptorType != USB_DT_ENDPOINT
|| hsep->bEndpointAddress != desc->bEndpointAddress
- || ep_maxpacket(hsep) < le16_to_cpu(desc->wMaxPacketSize))
+ || ep_maxpacket(hsep) < usb_endpoint_maxp(desc))
return -EINVAL;
if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
- && le16_to_cpu(desc->wMaxPacketSize) != ep_maxpacket(hsep))
+ && usb_endpoint_maxp(desc) != ep_maxpacket(hsep))
|| !desc->wMaxPacketSize)
return -ERANGE;
@@ -779,7 +781,7 @@ static int s3c_hsudc_ep_enable(struct usb_ep *_ep,
hsep->stopped = hsep->wedge = 0;
hsep->desc = desc;
- hsep->ep.maxpacket = le16_to_cpu(desc->wMaxPacketSize);
+ hsep->ep.maxpacket = usb_endpoint_maxp(desc);
s3c_hsudc_set_halt(_ep, 0);
__set_bit(ep_index(hsep), hsudc->regs + S3C_EIER);
@@ -1171,6 +1173,22 @@ static int s3c_hsudc_start(struct usb_gadget_driver *driver,
return ret;
}
+ /* connect to bus through transceiver */
+ if (hsudc->transceiver) {
+ ret = otg_set_peripheral(hsudc->transceiver, &hsudc->gadget);
+ if (ret) {
+ dev_err(hsudc->dev, "%s: can't bind to transceiver\n",
+ hsudc->gadget.name);
+ driver->unbind(&hsudc->gadget);
+
+ device_del(&hsudc->gadget.dev);
+
+ hsudc->driver = NULL;
+ hsudc->gadget.dev.driver = NULL;
+ return ret;
+ }
+ }
+
enable_irq(hsudc->irq);
dev_info(hsudc->dev, "bound driver %s\n", driver->driver.name);
@@ -1201,6 +1219,9 @@ static int s3c_hsudc_stop(struct usb_gadget_driver *driver)
s3c_hsudc_stop_activity(hsudc, driver);
spin_unlock_irqrestore(&hsudc->lock, flags);
+ if (hsudc->transceiver)
+ (void) otg_set_peripheral(hsudc->transceiver, NULL);
+
driver->unbind(&hsudc->gadget);
device_del(&hsudc->gadget.dev);
disable_irq(hsudc->irq);
@@ -1220,10 +1241,24 @@ static int s3c_hsudc_gadget_getframe(struct usb_gadget *gadget)
return s3c_hsudc_read_frameno(to_hsudc(gadget));
}
+static int s3c_hsudc_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+ struct s3c_hsudc *hsudc = the_controller;
+
+ if (!hsudc)
+ return -ENODEV;
+
+ if (hsudc->transceiver)
+ return otg_set_power(hsudc->transceiver, mA);
+
+ return -EOPNOTSUPP;
+}
+
static struct usb_gadget_ops s3c_hsudc_gadget_ops = {
.get_frame = s3c_hsudc_gadget_getframe,
.start = s3c_hsudc_start,
.stop = s3c_hsudc_stop,
+ .vbus_draw = s3c_hsudc_vbus_draw,
};
static int s3c_hsudc_probe(struct platform_device *pdev)
@@ -1247,6 +1282,8 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
hsudc->dev = dev;
hsudc->pd = pdev->dev.platform_data;
+ hsudc->transceiver = otg_get_transceiver();
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "unable to obtain driver resource data\n");
@@ -1269,19 +1306,6 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
goto err_remap;
}
- ret = platform_get_irq(pdev, 0);
- if (ret < 0) {
- dev_err(dev, "unable to obtain IRQ number\n");
- goto err_irq;
- }
- hsudc->irq = ret;
-
- ret = request_irq(hsudc->irq, s3c_hsudc_irq, 0, driver_name, hsudc);
- if (ret < 0) {
- dev_err(dev, "irq request failed\n");
- goto err_irq;
- }
-
spin_lock_init(&hsudc->lock);
device_initialize(&hsudc->gadget.dev);
@@ -1299,6 +1323,19 @@ static int s3c_hsudc_probe(struct platform_device *pdev)
s3c_hsudc_setup_ep(hsudc);
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0) {
+ dev_err(dev, "unable to obtain IRQ number\n");
+ goto err_irq;
+ }
+ hsudc->irq = ret;
+
+ ret = request_irq(hsudc->irq, s3c_hsudc_irq, 0, driver_name, hsudc);
+ if (ret < 0) {
+ dev_err(dev, "irq request failed\n");
+ goto err_irq;
+ }
+
hsudc->uclk = clk_get(&pdev->dev, "usb-device");
if (IS_ERR(hsudc->uclk)) {
dev_err(dev, "failed to find usb-device clock source\n");