summaryrefslogtreecommitdiffstats
path: root/include/linux/usb
diff options
context:
space:
mode:
authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2011-06-06 14:19:03 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-07 09:10:10 -0700
commite73a9891b3a1c9fc0970e0c9dbe2cc47933ad752 (patch)
treea40457485733fc6a08eae7f0d5efcbc98cf93a7d /include/linux/usb
parent0cb7e61d16ac68a2c5dd73a00e211287848d16e7 (diff)
downloadlinux-e73a9891b3a1c9fc0970e0c9dbe2cc47933ad752.tar.gz
linux-e73a9891b3a1c9fc0970e0c9dbe2cc47933ad752.tar.bz2
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 'include/linux/usb')
-rw-r--r--include/linux/usb/renesas_usbhs.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index 3a7f1d982dd6..8977431259c6 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -110,6 +110,23 @@ struct renesas_usbhs_driver_param {
* delay time from notify_hotplug callback
*/
int detection_delay;
+
+ /*
+ * option:
+ *
+ * dma id for dmaengine
+ */
+ int d0_tx_id;
+ int d0_rx_id;
+ int d1_tx_id;
+ int d1_rx_id;
+
+ /*
+ * option:
+ *
+ * pio <--> dma border.
+ */
+ int pio_dma_border; /* default is 64byte */
};
/*