Re: [RFC PATCH 1/5] spi: introduce flag for memory mapped read

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, Jul 28, 2015 at 02:11:12PM +0530, Vignesh R wrote:

> Introduce use_mmap_read field in spi_message struct. This can be set by
> mtd devices (m25p80) to indicate to spi-master (ti-qspi) to perform
> memory mapped read. This helps to distinguish whether the spi-message is
> from mtd layer(hence mmap read is possible) or by other spi devices.

Based on this description and...

> + * @use_mmap_mode: Indicate to spi master to perform memory mapped
> + *	read if possible.

...the internal documentation I unable to tell what is meant by "perform
a memory mapped read", at least to the extent where it is visible
outside of the driver.  This means we can't really use this as a generic
API since other people won't be able to tell what it does.

Attachment: signature.asc
Description: Digital signature


[Index of Archives]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux