[PATCH 4/9] mtd: nand: Add function to convert ONFI mode to data_interface

Sascha Hauer s.hauer at pengutronix.de
Sun Sep 11 23:35:11 PDT 2016


On Fri, Sep 09, 2016 at 02:35:22PM +0200, Boris Brezillon wrote:
> On Fri,  9 Sep 2016 14:05:07 +0200
> Sascha Hauer <s.hauer at pengutronix.de> wrote:
> 
> > onfi_init_data_interface() initializes a data interface with
> > values from a given ONFI mode.
> > 
> > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> > ---
> >  drivers/mtd/nand/nand_timings.c | 16 ++++++++++++++++
> >  include/linux/mtd/nand.h        |  2 ++
> >  2 files changed, 18 insertions(+)
> > 
> > diff --git a/drivers/mtd/nand/nand_timings.c b/drivers/mtd/nand/nand_timings.c
> > index 9af2ebc..ece4ff2 100644
> > --- a/drivers/mtd/nand/nand_timings.c
> > +++ b/drivers/mtd/nand/nand_timings.c
> > @@ -269,3 +269,19 @@ const struct nand_sdr_timings *onfi_async_timing_mode_to_sdr_timings(int mode)
> >  	return &onfi_sdr_timings[mode].timings.sdr;
> >  }
> >  EXPORT_SYMBOL(onfi_async_timing_mode_to_sdr_timings);
> > +
> > +/**
> > + * onfi_init_data_interface - [NAND Interface] Initialize a data interface from
> > + * given ONFI mode
> > + * @iface: The data interface to be initialized
> > + * @mode: The ONFI timing mode
> > + */
> > +int onfi_init_data_interface(struct nand_data_interface *iface, int mode)
> 
> Can we choose a more future proof prototype (like the one I suggested)
> for this function. Passing the nand_chip will later allow to extract
> extended timings (tR, tPROG, tCCS, ...) from the param page, and
> passing the interface type makes it compatible with DDR mode.

Ok, will change as you suggested to:

int onfi_init_data_interface(struct nand_chip *chip,
                             struct nand_data_interface *iface,
                             enum nand_data_interface_type type,
                             int timing_mode)

Before I send another round: Are the other patches ok?

Sascha

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