diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2011-12-08 18:28:54 -0800 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2011-12-13 13:06:26 +0200 |
| commit | 3edeee3893b107364fe4ed8535245773b1e1e72b (patch) | |
| tree | c2207d91e769635857b8f9b14e36ed686a6e8a32 /drivers/usb/renesas_usbhs/pipe.c | |
| parent | e5679d07a6ca5512070fb5e65dcc66eeb5087d0d (diff) | |
| download | linux-3.10-3edeee3893b107364fe4ed8535245773b1e1e72b.tar.gz linux-3.10-3edeee3893b107364fe4ed8535245773b1e1e72b.tar.bz2 linux-3.10-3edeee3893b107364fe4ed8535245773b1e1e72b.zip | |
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>
Diffstat (limited to 'drivers/usb/renesas_usbhs/pipe.c')
| -rw-r--r-- | drivers/usb/renesas_usbhs/pipe.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/usb/renesas_usbhs/pipe.c b/drivers/usb/renesas_usbhs/pipe.c index c36ad4c3a25..c2559e80d41 100644 --- a/drivers/usb/renesas_usbhs/pipe.c +++ b/drivers/usb/renesas_usbhs/pipe.c @@ -478,10 +478,27 @@ int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe) return usbhsp_flags_has(pipe, IS_DIR_HOST); } -void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int data) +void usbhs_pipe_data_sequence(struct usbhs_pipe *pipe, int sequence) { u16 mask = (SQCLR | SQSET); - u16 val = (data) ? SQSET : SQCLR; + u16 val; + + /* + * sequence + * 0 : data0 + * 1 : data1 + * -1 : no change + */ + switch (sequence) { + case 0: + val = SQCLR; + break; + case 1: + val = SQSET; + break; + default: + return; + } usbhsp_pipectrl_set(pipe, mask, val); } |