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From: Boris Brezillon <boris.brezillon@bootlin.com>
To: Vignesh R <vigneshr@ti.com>
Cc: "David Woodhouse" <dwmw2@infradead.org>,
	"Brian Norris" <computersforpeace@gmail.com>,
	"Marek Vasut" <marek.vasut@gmail.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Cyrille Pitchen" <cyrille.pitchen@wedev4u.fr>,
	linux-mtd@lists.infradead.org,
	"Miquel Raynal" <miquel.raynal@bootlin.com>,
	"Mark Brown" <broonie@kernel.org>,
	linux-spi@vger.kernel.org, "Peter Pan" <peterpansjtu@gmail.com>,
	"Frieder Schrempf" <frieder.schrempf@exceet.de>,
	"Yogesh Gaur" <yogeshnarayan.gaur@nxp.com>,
	"Rafał Miłecki" <rafal@milecki.pl>,
	"Kamal Dasu" <kdasu.kdev@gmail.com>,
	"Maxime Chevallier" <maxime.chevallier@bootlin.com>
Subject: Re: [PATCH v3 7/9] spi: ti-qspi: Implement the spi_mem interface
Date: Thu, 26 Apr 2018 11:28:55 +0200	[thread overview]
Message-ID: <20180426112855.46e0f3c0@bbrezillon> (raw)
In-Reply-To: <b13e1147-c168-1163-436d-5c3fadf70191@ti.com>

On Thu, 26 Apr 2018 14:40:41 +0530
Vignesh R <vigneshr@ti.com> wrote:

> > +static int ti_qspi_exec_mem_op(struct spi_mem *mem,
> > +			       const struct spi_mem_op *op)
> > +{
> > +	struct ti_qspi *qspi = spi_master_get_devdata(mem->spi->master);
> > +	u32 from = 0;
> > +	int ret = 0;
> > +
> > +	/* Only optimize read path. */
> > +	if (!op->data.nbytes || op->data.dir != SPI_MEM_DATA_IN ||
> > +	    !op->addr.nbytes || op->addr.nbytes > 4)
> > +		return -ENOTSUPP;
> > +
> > +	/* Address exceeds MMIO window size, fall back to regular mode. */
> > +	from = op->addr.val;
> > +	if (from + op->data.nbytes > qspi->mmap_size)
> > +		return -ENOTSUPP;
> > +  
> 
> qspi->mmap_size turns out to be 0 if qspi->rx_chan is not NULL
> (in other words when DMA is used)
> Could you squash below diff into this patch?

Will do.

Thanks,

Boris

WARNING: multiple messages have this Message-ID (diff)
From: Boris Brezillon <boris.brezillon@bootlin.com>
To: Vignesh R <vigneshr@ti.com>
Cc: "Yogesh Gaur" <yogeshnarayan.gaur@nxp.com>,
	"Kamal Dasu" <kdasu.kdev@gmail.com>,
	"Richard Weinberger" <richard@nod.at>,
	"Miquel Raynal" <miquel.raynal@bootlin.com>,
	linux-spi@vger.kernel.org, "Peter Pan" <peterpansjtu@gmail.com>,
	"Marek Vasut" <marek.vasut@gmail.com>,
	"Frieder Schrempf" <frieder.schrempf@exceet.de>,
	"Mark Brown" <broonie@kernel.org>,
	linux-mtd@lists.infradead.org,
	"Cyrille Pitchen" <cyrille.pitchen@wedev4u.fr>,
	"Rafał Miłecki" <rafal@milecki.pl>,
	"Maxime Chevallier" <maxime.chevallier@bootlin.com>,
	"Brian Norris" <computersforpeace@gmail.com>,
	"David Woodhouse" <dwmw2@infradead.org>
Subject: Re: [PATCH v3 7/9] spi: ti-qspi: Implement the spi_mem interface
Date: Thu, 26 Apr 2018 11:28:55 +0200	[thread overview]
Message-ID: <20180426112855.46e0f3c0@bbrezillon> (raw)
In-Reply-To: <b13e1147-c168-1163-436d-5c3fadf70191@ti.com>

On Thu, 26 Apr 2018 14:40:41 +0530
Vignesh R <vigneshr@ti.com> wrote:

> > +static int ti_qspi_exec_mem_op(struct spi_mem *mem,
> > +			       const struct spi_mem_op *op)
> > +{
> > +	struct ti_qspi *qspi = spi_master_get_devdata(mem->spi->master);
> > +	u32 from = 0;
> > +	int ret = 0;
> > +
> > +	/* Only optimize read path. */
> > +	if (!op->data.nbytes || op->data.dir != SPI_MEM_DATA_IN ||
> > +	    !op->addr.nbytes || op->addr.nbytes > 4)
> > +		return -ENOTSUPP;
> > +
> > +	/* Address exceeds MMIO window size, fall back to regular mode. */
> > +	from = op->addr.val;
> > +	if (from + op->data.nbytes > qspi->mmap_size)
> > +		return -ENOTSUPP;
> > +  
> 
> qspi->mmap_size turns out to be 0 if qspi->rx_chan is not NULL
> (in other words when DMA is used)
> Could you squash below diff into this patch?

Will do.

Thanks,

Boris

______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

  reply	other threads:[~2018-04-26  9:29 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-22 18:35 [PATCH v3 0/9] spi: Extend the framework to generically support memory devices Boris Brezillon
2018-04-22 18:35 ` Boris Brezillon
2018-04-22 18:35 ` [PATCH v3 1/9] spi: Expose spi_{map,unmap}_buf() for internal use Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-23 18:05   ` Applied "spi: Expose spi_{map, unmap}_buf() for internal use" to the spi tree Mark Brown
2018-04-23 18:05     ` Mark Brown
2018-04-22 18:35 ` [PATCH v3 2/9] spi: Add an helper to flush the message queue Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-23 18:05   ` Applied "spi: Add an helper to flush the message queue" to the spi tree Mark Brown
2018-04-23 18:05     ` Mark Brown
2018-04-22 18:35 ` [PATCH v3 3/9] spi: Extend the core to ease integration of SPI memory controllers Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-23 21:53   ` Andy Shevchenko
2018-04-23 21:53     ` Andy Shevchenko
2018-04-23 22:10     ` Boris Brezillon
2018-04-23 22:10       ` Boris Brezillon
2018-04-24 10:47       ` Mark Brown
2018-04-24 10:47         ` Mark Brown
2018-05-11  2:58   ` Applied "spi: Extend the core to ease integration of SPI memory controllers" to the spi tree Mark Brown
2018-05-11  2:58     ` Mark Brown
2018-04-22 18:35 ` [PATCH v3 4/9] spi: Make support for regular transfers optional when ->mem_ops != NULL Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-22 18:35 ` [PATCH v3 5/9] spi: bcm-qspi: Implement the spi_mem interface Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-24 15:19   ` Kamal Dasu
2018-04-24 15:19     ` Kamal Dasu
2018-04-22 18:35 ` [PATCH v3 6/9] spi: bcm53xx: " Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-22 18:35 ` [PATCH v3 7/9] spi: ti-qspi: " Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-26  9:10   ` Vignesh R
2018-04-26  9:10     ` Vignesh R
2018-04-26  9:28     ` Boris Brezillon [this message]
2018-04-26  9:28       ` Boris Brezillon
2018-04-22 18:35 ` [PATCH v3 8/9] mtd: spi-nor: Use the spi_mem_xx() API Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-04-22 18:35 ` [PATCH v3 9/9] spi: Get rid of the spi_flash_read() API Boris Brezillon
2018-04-22 18:35   ` Boris Brezillon
2018-05-11  9:24   ` Boris Brezillon
2018-05-11  9:24     ` Boris Brezillon
2018-04-26  9:07 ` [PATCH v3 0/9] spi: Extend the framework to generically support memory devices Vignesh R
2018-04-26  9:07   ` Vignesh R
2018-04-26  9:27   ` Boris Brezillon
2018-04-26  9:27     ` Boris Brezillon

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