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authorMichael Grzeschik <m.grzeschik@pengutronix.de>2013-06-13 17:59:53 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-17 13:45:47 -0700
commitcc9e6c495b0a37cc4f7003e470bcbb15ea760377 (patch)
tree620189fb514e382806ac61237b2812476c9abe07 /drivers/usb/chipidea/debug.c
parent20a677fd63c57edd5b0c463baa44f133b2f2d4a0 (diff)
downloadtalos-obmc-linux-cc9e6c495b0a37cc4f7003e470bcbb15ea760377.tar.gz
talos-obmc-linux-cc9e6c495b0a37cc4f7003e470bcbb15ea760377.zip
usb: chipidea: udc: manage dynamic amount of tds with a linked list
Instead of having a limited number of usable tds in the udc we use a linked list to support dynamic amount of needed tds for all special gadget types. This improves throughput. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea/debug.c')
-rw-r--r--drivers/usb/chipidea/debug.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c
index 36a7063a6cba..64b8c32d4f33 100644
--- a/drivers/usb/chipidea/debug.c
+++ b/drivers/usb/chipidea/debug.c
@@ -162,6 +162,7 @@ static int ci_requests_show(struct seq_file *s, void *data)
unsigned long flags;
struct list_head *ptr = NULL;
struct ci13xxx_req *req = NULL;
+ struct td_node *node, *tmpnode;
unsigned i, j, qsize = sizeof(struct ci13xxx_td)/sizeof(u32);
if (ci->role != CI_ROLE_GADGET) {
@@ -174,13 +175,17 @@ static int ci_requests_show(struct seq_file *s, void *data)
list_for_each(ptr, &ci->ci13xxx_ep[i].qh.queue) {
req = list_entry(ptr, struct ci13xxx_req, queue);
- seq_printf(s, "EP=%02i: TD=%08X %s\n",
- i % (ci->hw_ep_max / 2), (u32)req->dma,
- ((i < ci->hw_ep_max/2) ? "RX" : "TX"));
-
- for (j = 0; j < qsize; j++)
- seq_printf(s, " %04X: %08X\n", j,
- *((u32 *)req->ptr + j));
+ list_for_each_entry_safe(node, tmpnode, &req->tds, td) {
+ seq_printf(s, "EP=%02i: TD=%08X %s\n",
+ i % (ci->hw_ep_max / 2),
+ (u32)node->dma,
+ ((i < ci->hw_ep_max/2) ?
+ "RX" : "TX"));
+
+ for (j = 0; j < qsize; j++)
+ seq_printf(s, " %04X: %08X\n", j,
+ *((u32 *)node->ptr + j));
+ }
}
spin_unlock_irqrestore(&ci->lock, flags);
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