[Linux-arm-nuc900] NUC900 nand driver Patch

[wills wang]

2010/5/18 Wan ZongShun <mcuos.com at gmail.com>

> Hi Wills,
>
> Please send your patch to me as a attached file.
>
> thanks!
>
> 在 2010年4月29日 下午10:52，Wills Wang <wills.wang.cn at gmail.com> 写道：
> > There is a patch for NUC900 nand driver, it fix up the bug access for
> > incorrect register address and NULL pointer.
> >
> > --- linux-2.6.34-rc5/drivers/mtd/nand/nuc900_nand.c 2010-04-29
> > 14:35:04.000000000 +0000
> > +++ linux-2.6.34-rc5/drivers/mtd/nand/nuc900_nand.c 2010-04-29
> > 14:42:22.000000000 +0000
> > @@ -132,7 +153,7 @@
> > {
> > unsigned int val;
> > spin_lock(&nand->lock);
> > - val = __raw_readl(REG_SMISR);
> > + val = __raw_readl(nand->reg + REG_SMISR);
> > val &= READYBUSY;
> > spin_unlock(&nand->lock);
> >
> > @@ -150,6 +171,19 @@
> > return ready;
> > }
> >
> > +static void nuc900_nand_select_chip(struct mtd_info *mtd, int chipnr)
> > +{
> > + switch (chipnr) {
> > + case -1:
> > + break;
> > + case 0:
> > + break;
> > +
> > + default:
> > + BUG();
> > + }
> > +}
> > +
> > static void nuc900_nand_command_lp(struct mtd_info *mtd, unsigned int
> > command,
> > int column, int page_addr)
> > {
> > @@ -240,7 +274,6 @@
> > ;
> > }
> >
> > -
> > static void nuc900_nand_enable(struct nuc900_nand *nand)
> > {
> > unsigned int val;
> > @@ -250,7 +283,7 @@
> > val = __raw_readl(nand->reg + REG_FMICSR);
> >
> > if (!(val & NAND_EN))
> > - __raw_writel(val | NAND_EN, REG_FMICSR);
> > + __raw_writel(val | NAND_EN, nand->reg + REG_FMICSR);
> >
> > val = __raw_readl(nand->reg + REG_SMCSR);
> >
> > @@ -286,7 +319,7 @@
> > goto fail1;
> > }
> > clk_enable(nuc900_nand->clk);
> > -
> > + chip->select_chip = nuc900_nand_select_chip;
> > chip->cmdfunc = nuc900_nand_command_lp;
> > chip->dev_ready = nuc900_nand_devready;
> > chip->read_byte = nuc900_nand_read_byte;
> >
> > --
> > 欢迎加入"NUC900 Linux BSP开发社区".
> > NUC900 Linux相关问题请发问题邮件至：
> > NUC900 at googlegroups.com
> > 取消订阅请发邮件：
> > NUC900+unsubscribe at googlegroups.com<NUC900%2Bunsubscribe at googlegroups.com>
> > 新手请熟读社区首页：
> > https://groups.google.com/group/NUC900?hl=zh-CN
> >
>
>
>
> --
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>
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