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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2011-06-06 07:19:03 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-06-07 18:10:10 +0200 |
| commit | e73a9891b3a1c9fc0970e0c9dbe2cc47933ad752 (patch) | |
| tree | a40457485733fc6a08eae7f0d5efcbc98cf93a7d /drivers/usb/renesas_usbhs/pipe.h | |
| parent | usb: renesas_usbhs: tidyup pio handler name (diff) | |
| download | linux-e73a9891b3a1c9fc0970e0c9dbe2cc47933ad752.tar.xz linux-e73a9891b3a1c9fc0970e0c9dbe2cc47933ad752.zip | |
usb: renesas_usbhs: add DMAEngine support
USB DMA was installed on "normal DMAC" when SH7724 or older SuperH,
but the "USB-DMAC" was prepared on recent SuperH.
These 2 DMAC have a little bit different behavior.
This patch add DMAEngine code for "normal DMAC",
but it is still using PIO fifo.
The DMA fifo will be formally supported in the future.
You can enable DMA fifo by local fixup
usbhs_fifo_pio_push_handler -> usbhs_fifo_dma_push_handler
usbhs_fifo_pio_pop_handler -> usbhs_fifo_dma_pop_handler
on usbhsg_ep_enable.
This DMAEngine was tested by g_file_storage on SH7724 Ecovec board
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/pipe.h')
| -rw-r--r-- | drivers/usb/renesas_usbhs/pipe.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/usb/renesas_usbhs/pipe.h b/drivers/usb/renesas_usbhs/pipe.h index 484adbed6dfb..35e100477e55 100644 --- a/drivers/usb/renesas_usbhs/pipe.h +++ b/drivers/usb/renesas_usbhs/pipe.h @@ -44,6 +44,7 @@ struct usbhs_pipe_info { int bufnmb_last; /* FIXME : driver needs good allocator */ void (*done)(struct usbhs_pkt *pkt); + int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map); }; /* @@ -82,7 +83,8 @@ void usbhs_pipe_remove(struct usbhs_priv *priv); int usbhs_pipe_is_dir_in(struct usbhs_pipe *pipe); int usbhs_pipe_is_dir_host(struct usbhs_pipe *pipe); void usbhs_pipe_init(struct usbhs_priv *priv, - void (*done)(struct usbhs_pkt *pkt)); + void (*done)(struct usbhs_pkt *pkt), + int (*dma_map_ctrl)(struct usbhs_pkt *pkt, int map)); int usbhs_pipe_get_maxpacket(struct usbhs_pipe *pipe); void usbhs_pipe_clear_sequence(struct usbhs_pipe *pipe); int usbhs_pipe_is_accessible(struct usbhs_pipe *pipe); |