usb: renesas_usbhs: care pipe sequence
driver has to re-use the limited pipe for each device/endpoint
when it is USB host hub mode, since number of pipe has limitation.
Then, each pipe should care own pipe sequence for next packet.
This patch adds sequence control.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index ffdf5d1..b51fcd8 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -56,7 +56,7 @@
void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
void (*done)(struct usbhs_priv *priv,
struct usbhs_pkt *pkt),
- void *buf, int len, int zero)
+ void *buf, int len, int zero, int sequence)
{
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
struct device *dev = usbhs_priv_to_dev(priv);
@@ -90,6 +90,7 @@
pkt->zero = zero;
pkt->actual = 0;
pkt->done = done;
+ pkt->sequence = sequence;
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
@@ -481,6 +482,9 @@
int i, ret, len;
int is_short;
+ usbhs_pipe_data_sequence(pipe, pkt->sequence);
+ pkt->sequence = -1; /* -1 sequence will be ignored */
+
ret = usbhsf_fifo_select(pipe, fifo, 1);
if (ret < 0)
return 0;
@@ -584,6 +588,8 @@
/*
* pipe enable to prepare packet receive
*/
+ usbhs_pipe_data_sequence(pipe, pkt->sequence);
+ pkt->sequence = -1; /* -1 sequence will be ignored */
usbhs_pipe_enable(pipe);
usbhsf_rx_irq_ctrl(pipe, 1);
@@ -641,6 +647,7 @@
* "Operation" - "FIFO Buffer Memory" - "FIFO Port Function"
*/
if (0 == rcv_len) {
+ pkt->zero = 1;
usbhsf_fifo_clear(pipe, fifo);
goto usbhs_fifo_read_end;
}