From: masonccyang@mxic.com.tw
Cc: richard@nod.at, bbrezillon@kernel.org, juliensu@mxic.com.tw,
gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
frieder.schrempf@kontron.de, marcel.ziswiler@toradex.com,
linux-mtd@lists.infradead.org,
Miquel Raynal <miquel.raynal@bootlin.com>,
tglx@linutronix.de, computersforpeace@gmail.com,
dwmw2@infradead.org, marek.vasut@gmail.com, vigneshr@ti.com
Subject: Re: [PATCH RFC 2/3] mtd: rawnand: Add support Macronix Block Protection function
Date: Mon, 21 Oct 2019 15:23:57 +0800 [thread overview]
Message-ID: <OF894937F3.4B6774EB-ON4825849A.0027B2DF-4825849A.0028A53F@mxic.com.tw> (raw)
In-Reply-To: <OFB4F10613.467EB346-ON48258494.0020403E-48258494.002550A2@LocalDomain>
Hi Miquel,
> > > > Then fill-in these two hooks from the manufacturer code, without
the
> > > > postponed init.
> > > >
> > >
> > > But in the final of nand_scan_tail(), mtd->_lock/_unlock will be
> > > filled by NULL, right ?
> >
> > The NAND core should set mtd->_lock/_unlock() to NAND specific hooks
so
> > that the MTD layer is abstracted and and drivers do not see it. Then,
> > in the NAND helper, either there is no specific hook defined by a
> > manufacturer driver and you return -ENOTSUPP, or you execute the
> > defined hook.
>
> okay, patch specific manufacturer _lock/_unlock driver
> in nand_manufacturer_init();
>
> and in the final of nand_scan_tail()
> if (!mtd->_lock)
> mtd->_lock = NULL;
> if (!mtd->_unlock)
> mtd->_unlock = NULL;
I'm still considering of post_init() in nand_scan_tail() for
MTD layer default call-back function replacement because
there would be more call-back functions need it.
i.e.,
MTD->_lock/_unlokc
MTD->_suspend/_resume
NTD->_point/_unpoint
...
actually, my patch series are including MTD->_locl/_unlock and
MTD->_suspend/_resume. how do you think ?
thanks for your time & comments.
Mason
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next prev parent reply other threads:[~2019-10-21 7:25 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-18 7:56 [PATCH RFC 1/3] mtd: rawnand: Add support manufacturer postponed initialization Mason Yang
2019-09-18 7:56 ` [PATCH RFC 2/3] mtd: rawnand: Add support Macronix Block Protection function Mason Yang
2019-10-07 8:45 ` Miquel Raynal
2019-10-07 9:24 ` Miquel Raynal
2019-10-08 2:33 ` masonccyang
2019-10-08 15:02 ` Miquel Raynal
2019-10-15 6:47 ` masonccyang
[not found] ` <OFB4F10613.467EB346-ON48258494.0020403E-48258494.002550A2@LocalDomain>
2019-10-21 7:23 ` masonccyang [this message]
2019-10-21 7:44 ` Boris Brezillon
2019-10-21 8:40 ` masonccyang
2019-10-21 8:56 ` Boris Brezillon
2019-10-21 9:07 ` masonccyang
2019-09-18 7:56 ` [PATCH RFC 3/3] mtd: rawnand: Add support Macronix power down mode Mason Yang
2019-10-07 8:45 ` Miquel Raynal
2019-10-08 2:06 ` masonccyang
2019-10-08 7:28 ` Boris Brezillon
2019-10-15 2:33 ` masonccyang
2019-10-15 7:56 ` Miquel Raynal
2019-10-16 6:55 ` masonccyang
2019-10-25 3:11 ` masonccyang
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