[PATCH 1/5] spi: introduce mmap read support for spi flash devices

[Vignesh R]

On 09/15/2015 12:05 AM, Mark Brown wrote:
> On Fri, Sep 04, 2015 at 04:55:33PM +0530, Jagan Teki wrote:
>> On 4 September 2015 at 13:59, Vignesh R <vigneshr at ti.com> wrote:
> 
>>> + * @spi_mtd_mmap_read: some spi-controller hardwares provide memory
>>> + *                     mapped interface to communicate with mtd flashes.
>>> + *                     For this, spi  controller needs to know flash
>>> + *                     memory settings like read command to use, dummy
>>> + *                     bytes and address width. Once these settings are
>>> + *                     populated in hardware registers, any read
>>> + *                     accesses to flash's memory map region(as defined
>>> + *                     by SoC) through memcpy or mem-to-mem DMA copy
>>> + *                     will be handled by controller hardware. The
>>> + *                     hardware will automatically generate spi signals
>>> + *                     required to read data from flash and present it
>>> + *                     to CPU or DMA. SPI master drivers can use this
>>> + *                     callback to implement memory mapped read
>>> + *                     interface. Flash driver (like m25p80) requests
>>> + *                     memory mapped read via this method. The interface
>>> + *                     should  only be used mtd flashes and cannot be
>>> + *                     used with other spi devices.
> 
> This comment is *way* too verbose - probably you just need up to the
> "Once" here.
> 

Ok, I will move the extra text to commit log.


-- 
Thanks,
Vignesh