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USB: musb: workaround Blackfin FIFO anomalies

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Some of these workarounds are already in place, but labeled as affecting
all BF52x parts.  Since we have official anomaly numbers now, use those
defines.  And since writing to the FIFO has a similar hang issue as reading
from the FIFO, implement the workaround there too when necessary.

Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bryan Wu
2009-12-21 09:49:52 -05:00
committed by Greg Kroah-Hartman
parent 0ea52ff44f
commit 1c4bdc01b8
2 changed files with 91 additions and 45 deletions
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2
drivers/usb/musb/blackfin.h
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@@ -69,7 +69,6 @@ static void dump_fifo_data(u8 *buf, u16 len)
#define dump_fifo_data(buf, len) do {} while (0)
#endif
#ifdef CONFIG_BF52x
#define USB_DMA_BASE USB_DMA_INTERRUPT
#define USB_DMAx_CTRL 0x04
@@ -79,7 +78,6 @@ static void dump_fifo_data(u8 *buf, u16 len)
#define USB_DMAx_COUNT_HIGH 0x14
#define USB_DMA_REG(ep, reg) (USB_DMA_BASE + 0x20 * ep + reg)
#endif
/* Almost 1 second */
#define TIMER_DELAY (1 * HZ)