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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2011-06-06 14:18:16 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-07 09:10:08 -0700
commit6acb95d4e0709a582023e87f9b3537fb4d837fd0 (patch)
tree635562ba3b0c219fbc08d6880fe2e64c2e3d1b31 /drivers/usb/renesas_usbhs/fifo.c
parent4bd0481152d0d5e8326d7e24329b0069713ed718 (diff)
usb: renesas_usbhs: modify packet queue control method
Current renesas_usbhs driver is controlling packet queue on mod_gadget.c. But it has relationship with pipe/fifo, not host/gadget. So, controlling USB packet queue in pipe.c/fifo.c is more convenient than in mod_gadget.c. This patch modify it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/renesas_usbhs/fifo.c')
-rw-r--r--drivers/usb/renesas_usbhs/fifo.c31
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 098388489813..088bfd787e4a 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -22,17 +22,40 @@
/*
* packet info function
*/
-void usbhs_pkt_update(struct usbhs_pkt *pkt,
- struct usbhs_pipe *pipe,
- void *buf, int len)
+void usbhs_pkt_init(struct usbhs_pkt *pkt)
+{
+ INIT_LIST_HEAD(&pkt->node);
+}
+
+void usbhs_pkt_update(struct usbhs_pkt *pkt, void *buf, int len)
{
- pkt->pipe = pipe;
pkt->buf = buf;
pkt->length = len;
pkt->actual = 0;
pkt->maxp = 0;
}
+void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt)
+{
+ list_del_init(&pkt->node);
+ list_add_tail(&pkt->node, &pipe->list);
+
+ pkt->pipe = pipe;
+}
+
+void usbhs_pkt_pop(struct usbhs_pkt *pkt)
+{
+ list_del_init(&pkt->node);
+}
+
+struct usbhs_pkt *usbhs_pkt_get(struct usbhs_pipe *pipe)
+{
+ if (list_empty(&pipe->list))
+ return NULL;
+
+ return list_entry(pipe->list.next, struct usbhs_pkt, node);
+}
+
/*
* FIFO ctrl
*/