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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2011-09-30 13:07:38 +0200 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2011-10-13 19:38:39 +0200 |
| commit | b8a56e17e18cca2402b390c10b8d7f3cd0f6265b (patch) | |
| tree | 7587857c374fd360257814b24ed83d96e3b0019d /drivers/usb/gadget/r8a66597-udc.h | |
| parent | usb: gadget: r8a66597-udc: use dev_*() instead of printk() (diff) | |
| download | linux-b8a56e17e18cca2402b390c10b8d7f3cd0f6265b.tar.xz linux-b8a56e17e18cca2402b390c10b8d7f3cd0f6265b.zip | |
usb: gadget: r8a66597-udc: add support for SUDMAC
SH7757 has a USB function with internal DMA controller (SUDMAC).
This patch supports the SUDMAC. The SUDMAC is incompatible with
general-purpose DMAC. So, it doesn't use dmaengine.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/gadget/r8a66597-udc.h')
| -rw-r--r-- | drivers/usb/gadget/r8a66597-udc.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/usb/gadget/r8a66597-udc.h b/drivers/usb/gadget/r8a66597-udc.h index 832ee59c8e45..8e3de61cd4b8 100644 --- a/drivers/usb/gadget/r8a66597-udc.h +++ b/drivers/usb/gadget/r8a66597-udc.h @@ -43,6 +43,7 @@ ((pipenum >= R8A66597_BASE_PIPENUM_ISOC) && \ (pipenum < (R8A66597_BASE_PIPENUM_ISOC + R8A66597_MAX_NUM_ISOC))) +#define r8a66597_is_sudmac(r8a66597) (r8a66597->pdata->sudmac) struct r8a66597_pipe_info { u16 pipe; u16 epnum; @@ -60,6 +61,7 @@ struct r8a66597_request { struct r8a66597_ep { struct usb_ep ep; struct r8a66597 *r8a66597; + struct r8a66597_dma *dma; struct list_head queue; unsigned busy:1; @@ -75,13 +77,20 @@ struct r8a66597_ep { unsigned char fifoaddr; unsigned char fifosel; unsigned char fifoctr; - unsigned char fifotrn; unsigned char pipectr; + unsigned char pipetre; + unsigned char pipetrn; +}; + +struct r8a66597_dma { + unsigned used:1; + unsigned dir:1; /* 1 = IN(write), 0 = OUT(read) */ }; struct r8a66597 { spinlock_t lock; void __iomem *reg; + void __iomem *sudmac_reg; #ifdef CONFIG_HAVE_CLK struct clk *clk; @@ -94,6 +103,7 @@ struct r8a66597 { struct r8a66597_ep ep[R8A66597_MAX_NUM_PIPE]; struct r8a66597_ep *pipenum2ep[R8A66597_MAX_NUM_PIPE]; struct r8a66597_ep *epaddr2ep[16]; + struct r8a66597_dma dma; struct timer_list timer; struct usb_request *ep0_req; /* for internal request */ @@ -251,7 +261,21 @@ static inline u16 get_xtal_from_pdata(struct r8a66597_platdata *pdata) return clock; } +static inline u32 r8a66597_sudmac_read(struct r8a66597 *r8a66597, + unsigned long offset) +{ + return ioread32(r8a66597->sudmac_reg + offset); +} + +static inline void r8a66597_sudmac_write(struct r8a66597 *r8a66597, u32 val, + unsigned long offset) +{ + iowrite32(val, r8a66597->sudmac_reg + offset); +} + #define get_pipectr_addr(pipenum) (PIPE1CTR + (pipenum - 1) * 2) +#define get_pipetre_addr(pipenum) (PIPE1TRE + (pipenum - 1) * 4) +#define get_pipetrn_addr(pipenum) (PIPE1TRN + (pipenum - 1) * 4) #define enable_irq_ready(r8a66597, pipenum) \ enable_pipe_irq(r8a66597, pipenum, BRDYENB) |