[PATCH 09/11] usb: gadget: at91_udc: Allocate udc instance

Boris Brezillon
2014-12-03T11:33:08Z

Allocate udc structure instead of relying on the statically declared
object.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
---
drivers/usb/gadget/udc/at91_udc.c | 101 ++++++++++----------------------------
1 file changed, 27 insertions(+), 74 deletions(-)

diff --git a/drivers/usb/gadget/udc/at91_udc.c b/drivers/usb/gadget/udc/at91_udc.c
index f870c03..2b20dd7 100644
--- a/drivers/usb/gadget/udc/at91_udc.c
+++ b/drivers/usb/gadget/udc/at91_udc.c
@@ -59,7 +59,15 @@
#define DRIVER_VERSION "3 May 2006"

static const char driver_name [] = "at91_udc";
-static const char ep0name[] = "ep0";
+static const char * const ep_names[] = {
+ "ep0",
+ "ep1",
+ "ep2",
+ "ep3-int",
+ "ep4",
+ "ep5",
+};
+#define ep0name ep_names[0]

#define VBUS_POLL_TIMEOUT msecs_to_jiffies(1000)

@@ -1477,78 +1485,6 @@ static void nop_release(struct device *dev)
/* nothing to free */
}

-static struct at91_udc controller = {
- .gadget = {
- .ops = &at91_udc_ops,
- .ep0 = &controller.ep[0].ep,
- .name = driver_name,
- .dev = {
- .init_name = "gadget",
- .release = nop_release,
- }
- },
- .ep[0] = {
- .ep = {
- .name = ep0name,
- .ops = &at91_ep_ops,
- },
- .udc = &controller,
- .maxpacket = 8,
- .int_mask = 1 << 0,
- },
- .ep[1] = {
- .ep = {
- .name = "ep1",
- .ops = &at91_ep_ops,
- },
- .udc = &controller,
- .is_pingpong = 1,
- .maxpacket = 64,
- .int_mask = 1 << 1,
- },
- .ep[2] = {
- .ep = {
- .name = "ep2",
- .ops = &at91_ep_ops,
- },
- .udc = &controller,
- .is_pingpong = 1,
- .maxpacket = 64,
- .int_mask = 1 << 2,
- },
- .ep[3] = {
- .ep = {
- /* could actually do bulk too */
- .name = "ep3-int",
- .ops = &at91_ep_ops,
- },
- .udc = &controller,
- .maxpacket = 8,
- .int_mask = 1 << 3,
- },
- .ep[4] = {
- .ep = {
- .name = "ep4",
- .ops = &at91_ep_ops,
- },
- .udc = &controller,
- .is_pingpong = 1,
- .maxpacket = 256,
- .int_mask = 1 << 4,
- },
- .ep[5] = {
- .ep = {
- .name = "ep5",
- .ops = &at91_ep_ops,
- },
- .udc = &controller,
- .is_pingpong = 1,
- .maxpacket = 256,
- .int_mask = 1 << 5,
- },
- /* ep6 and ep7 are also reserved (custom silicon might use them) */
-};
-
static void at91_vbus_update(struct at91_udc *udc, unsigned value)
{
value ^= udc->board.vbus_active_low;
@@ -1859,15 +1795,32 @@ static int at91udc_probe(struct platform_device *pdev)
struct at91_ep *ep;
int i;

+ udc = devm_kzalloc(dev, sizeof(*udc), GFP_KERNEL);
+ if (!udc)
+ return -ENOMEM;
+
/* init software state */
- udc = &controller;
udc->gadget.dev.parent = dev;
at91udc_of_init(udc, pdev->dev.of_node);
udc->pdev = pdev;
udc->enabled = 0;
spin_lock_init(&udc->lock);

+ udc->gadget.ops = &at91_udc_ops;
+ udc->gadget.ep0 = &udc->ep[0].ep;
+ udc->gadget.name = driver_name;
+ udc->gadget.dev.init_name = "gadget";
+ udc->gadget.dev.release = nop_release;

+ for (i = 0; i < NUM_ENDPOINTS; i++) {
+ ep = &udc->ep[i];
+ ep->ep.name = ep_names[i];
+ ep->ep.ops = &at91_ep_ops;
+ ep->udc = udc;
+ ep->int_mask = BIT(i);
+ if (i != 0 && i != 3)
+ ep->is_pingpong = 1;
+ }

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
udc->udp_baseaddr = devm_ioremap_resource(dev, res);
--
1.9.1