From: Vignesh R <vigneshr@ti.com>
To: Mark Brown <broonie@kernel.org>
Cc: <linux-spi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-omap@vger.kernel.org>, Vignesh R <vigneshr@ti.com>
Subject: [PATCH v2 0/2] spi-ti-qspi: Handle vmalloc'd buffers
Date: Tue, 11 Apr 2017 17:22:23 +0530 [thread overview]
Message-ID: <20170411115225.31709-1-vigneshr@ti.com> (raw)
First patch, adds can_dma() like interface for spi_flash_read()
interface,
this will enable controller drivers to selectively use DMA based on
buffer type, alignment, size or other limitations.
Second patch implements bounce buffer support for ti-qspi driver to
handle buffers that are not DMA'able, like vmalloc'd buffers that belong
to LPAE region. This is required to work with UBIFS.
Vignesh R (2):
spi: Add can_dma like interface for spi_flash_read
spi: spi-ti-qspi: Use bounce buffer if read buffer is not DMA'ble
drivers/spi/spi-ti-qspi.c | 66 ++++++++++++++++++++++++++++++++++++++++++-----
drivers/spi/spi.c | 2 +-
include/linux/spi/spi.h | 4 +++
3 files changed, 64 insertions(+), 8 deletions(-)
--
2.11.0
next reply other threads:[~2017-04-11 11:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-11 11:52 Vignesh R [this message]
[not found] ` <20170411115225.31709-1-vigneshr-l0cyMroinI0@public.gmane.org>
2017-04-11 11:52 ` [PATCH v2 1/2] spi: Add can_dma like interface for spi_flash_read Vignesh R
2017-04-11 11:52 ` [PATCH v2 2/2] spi: spi-ti-qspi: Use bounce buffer if read buffer is not DMA'ble Vignesh R
2017-04-21 17:06 ` Mark Brown
[not found] ` <20170421170655.dpyxlwipfwnwjjwy-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2017-04-25 12:18 ` Vignesh R
[not found] ` <3955ad22-28a2-5222-4ae3-aa34dc69cde6-l0cyMroinI0@public.gmane.org>
2017-06-16 15:54 ` Cyrille Pitchen
2017-06-20 9:45 ` Vignesh R
2017-06-23 12:12 ` Mark Brown
2017-04-21 17:28 ` Applied "spi: spi-ti-qspi: Use bounce buffer if read buffer is not DMA'ble" to the spi tree Mark Brown
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