From bb59dbff4e5fb0ac14e3ee47d3f688490f128155 Mon Sep 17 00:00:00 2001 From: Yoshihiro Shimoda Date: Thu, 7 Jul 2011 09:58:43 +0900 Subject: usb: gadget: m66592-udc: add function for external controller M66592 has the pin of WR0 and WR1. So, if one write-pin of CPU connects to the pins, we have to change the setting of FIFOSEL register in the controller. If we don't change the setting, the controller cannot send the data of odd length. Signed-off-by: Yoshihiro Shimoda Signed-off-by: Felipe Balbi --- drivers/usb/gadget/m66592-udc.h | 38 +++++++++++++++++++++----------------- 1 file changed, 21 insertions(+), 17 deletions(-) (limited to 'drivers/usb/gadget/m66592-udc.h') diff --git a/drivers/usb/gadget/m66592-udc.h b/drivers/usb/gadget/m66592-udc.h index b85e05b2e97b..7b93d579af37 100644 --- a/drivers/usb/gadget/m66592-udc.h +++ b/drivers/usb/gadget/m66592-udc.h @@ -561,11 +561,26 @@ static inline void m66592_write(struct m66592 *m66592, u16 val, iowrite16(val, m66592->reg + offset); } +static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat, + unsigned long offset) +{ + u16 tmp; + tmp = m66592_read(m66592, offset); + tmp = tmp & (~pat); + tmp = tmp | val; + m66592_write(m66592, tmp, offset); +} + +#define m66592_bclr(m66592, val, offset) \ + m66592_mdfy(m66592, 0, val, offset) +#define m66592_bset(m66592, val, offset) \ + m66592_mdfy(m66592, val, 0, offset) + static inline void m66592_write_fifo(struct m66592 *m66592, - unsigned long offset, + struct m66592_ep *ep, void *buf, unsigned long len) { - void __iomem *fifoaddr = m66592->reg + offset; + void __iomem *fifoaddr = m66592->reg + ep->fifoaddr; if (m66592->pdata->on_chip) { unsigned long count; @@ -591,26 +606,15 @@ static inline void m66592_write_fifo(struct m66592 *m66592, iowrite16_rep(fifoaddr, buf, len); if (odd) { unsigned char *p = buf + len*2; + if (m66592->pdata->wr0_shorted_to_wr1) + m66592_bclr(m66592, M66592_MBW_16, ep->fifosel); iowrite8(*p, fifoaddr); + if (m66592->pdata->wr0_shorted_to_wr1) + m66592_bset(m66592, M66592_MBW_16, ep->fifosel); } } } -static inline void m66592_mdfy(struct m66592 *m66592, u16 val, u16 pat, - unsigned long offset) -{ - u16 tmp; - tmp = m66592_read(m66592, offset); - tmp = tmp & (~pat); - tmp = tmp | val; - m66592_write(m66592, tmp, offset); -} - -#define m66592_bclr(m66592, val, offset) \ - m66592_mdfy(m66592, 0, val, offset) -#define m66592_bset(m66592, val, offset) \ - m66592_mdfy(m66592, val, 0, offset) - #endif /* ifndef __M66592_UDC_H__ */ -- cgit v1.2.3