Add a wrapper for reading the DMA count register, analogous
to the one for writing to this register.
Signed-off-by: Anand Gadiyar <gadiyar@xxxxxx>
Cc: Vikram Pandita <vikram.pandita@xxxxxx>
Cc: Felipe Balbi <felipe.balbi@xxxxxxxxx>
---
drivers/usb/musb/musbhsdma.h | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
Index: linux-2.6/drivers/usb/musb/musbhsdma.h
===================================================================
--- linux-2.6.orig/drivers/usb/musb/musbhsdma.h 2009-12-18 19:42:33.000000000 +0530
+++ linux-2.6/drivers/usb/musb/musbhsdma.h 2009-12-18 20:02:22.000000000 +0530
@@ -55,6 +55,10 @@
MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_ADDRESS), \
addr)
+#define musb_read_hsdma_count(mbase, bchannel) \
+ musb_readl(mbase, \
+ MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT))
+
#define musb_write_hsdma_count(mbase, bchannel, len) \
musb_writel(mbase, \
MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT), \
@@ -96,6 +100,19 @@ static inline void musb_write_hsdma_addr
((u16)(((u32) dma_addr >> 16) & 0xFFFF)));
}
+static inline u32 musb_read_hsdma_count(void __iomem *mbase, u8 bchannel)
+{
+ u32 count = musb_readw(mbase,
+ MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_HIGH));
+
+ count = count << 16;
+
+ count |= musb_readw(mbase,
+ MUSB_HSDMA_CHANNEL_OFFSET(bchannel, MUSB_HSDMA_COUNT_LOW));
+
+ return count;
+}
+
static inline void musb_write_hsdma_count(void __iomem *mbase,
u8 bchannel, u32 len)
{
--
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