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| author | Ajay Kumar Gupta <ajay.gupta@ti.com> | 2009-11-17 15:22:55 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-11-30 16:43:16 -0800 |
| commit | dfeffa531ccf9c31f2f55df6d7ca86eec92142df (patch) | |
| tree | 81dd260d9d219ebf55c48bbfddf2fc988e70d885 /drivers/usb/musb/musb_host.c | |
| parent | 1230435c258e34b47ab7adc3db572c88a284234a (diff) | |
| download | lwn-dfeffa531ccf9c31f2f55df6d7ca86eec92142df.tar.gz lwn-dfeffa531ccf9c31f2f55df6d7ca86eec92142df.zip | |
USB: musb: fix ISOC Tx programming for CPPI DMAs
Isochronous Tx DMA is getting programmed but never getting started
for CPPI and TUSB DMAs and thus Isochronous Tx doesn't work.
Fixing it by starting DMAs using musb_h_tx_dma_start().
Signed-off-by: Swaminathan S <swami.iyer@ti.com>
Signed-off-by: Babu Ravi <ravibabu@ti.com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/musb/musb_host.c')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index cf94511485f2..e3ab40a966eb 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -1301,8 +1301,11 @@ void musb_host_tx(struct musb *musb, u8 epnum) return; } else if (usb_pipeisoc(pipe) && dma) { if (musb_tx_dma_program(musb->dma_controller, hw_ep, qh, urb, - offset, length)) + offset, length)) { + if (is_cppi_enabled() || tusb_dma_omap()) + musb_h_tx_dma_start(hw_ep); return; + } } else if (tx_csr & MUSB_TXCSR_DMAENAB) { DBG(1, "not complete, but DMA enabled?\n"); return; |