diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2015-03-12 06:35:20 (GMT) |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-03-13 15:41:19 (GMT) |
| commit | ab330cf3888d8e0779fa05a243d53ba9f53a7ba9 (patch) | |
| tree | 9e27ed02aeb8be7dd617004d03baabe821e398bf /drivers/usb/renesas_usbhs/common.h | |
| parent | 9b53d9af7aac09cf249d72bfbf15f08e47c4f7fe (diff) | |
| download | linux-ab330cf3888d8e0779fa05a243d53ba9f53a7ba9.tar.xz | |
usb: renesas_usbhs: add support for USB-DMAC
Some Renesas SoCs have the USB-DMAC. It is able to terminate transfers
when a short packet is received, even if less bytes than the transfer
counter size have been received. Also, it is able to send a short
packet even if the packet size is not multiples of 8bytes.
Since the previous code has used the interruption of USBHS controller
when receiving packets even if this driver has used a dmac, a lot of
interruptions has happened. This patch will reduce such interruptions.
This patch allows to use the USB-DMAC on R-Car H2 and M2.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/renesas_usbhs/common.h')
| -rw-r--r-- | drivers/usb/renesas_usbhs/common.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/common.h b/drivers/usb/renesas_usbhs/common.h index fc96e92..8c5fc12 100644 --- a/drivers/usb/renesas_usbhs/common.h +++ b/drivers/usb/renesas_usbhs/common.h @@ -193,6 +193,7 @@ struct usbhs_priv; #define TYPE_BULK (1 << 14) #define TYPE_INT (2 << 14) #define TYPE_ISO (3 << 14) +#define BFRE (1 << 10) /* BRDY Interrupt Operation Spec. */ #define DBLB (1 << 9) /* Double Buffer Mode */ #define SHTNAK (1 << 7) /* Pipe Disable in Transfer End */ #define DIR_OUT (1 << 4) /* Transfer Direction */ @@ -216,6 +217,7 @@ struct usbhs_priv; #define ACLRM (1 << 9) /* Buffer Auto-Clear Mode */ #define SQCLR (1 << 8) /* Toggle Bit Clear */ #define SQSET (1 << 7) /* Toggle Bit Set */ +#define SQMON (1 << 6) /* Toggle Bit Check */ #define PBUSY (1 << 5) /* Pipe Busy */ #define PID_MASK (0x3) /* Response PID */ #define PID_NAK 0 @@ -324,6 +326,11 @@ int usbhs_set_device_config(struct usbhs_priv *priv, int devnum, u16 upphub, u16 hubport, u16 speed); /* + * interrupt functions + */ +void usbhs_xxxsts_clear(struct usbhs_priv *priv, u16 sts_reg, u16 bit); + +/* * data */ struct usbhs_priv *usbhs_pdev_to_priv(struct platform_device *pdev); |