kernel/include/linux/spi/spi-mem.h, branch linux-5.2.y

spi: spi-mem: Make spi_mem_default_supports_op() static inline

2019-05-02T01:37:46Z

Stub helper spi_mem_default_supports_op() should be set to static inline Signed-off-by: YueHaibing Signed-off-by: Mark Brown

spi: spi-mem: Fix build error without CONFIG_SPI_MEM

2019-05-02T01:37:45Z

When building with CONFIG_SPI_MEM is not set gc warns this: drivers/spi/spi-zynq-qspi.o: In function `zynq_qspi_supports_op': spi-zynq-qspi.c:(.text+0x1da): undefined reference to `spi_mem_default_supports_op' Fixes: 67dca5e580f1 ("spi: spi-mem: Add support for Zynq QSPI controller") Signed-off-by: YueHaibing Signed-off-by: Mark Brown

spi: spi-mem: export spi_mem_default_supports_op()

2019-04-03T04:23:54Z

Export spi_mem_default_supports_op(), so that controller drivers can use this. spi-mem driver already exports this using EXPORT_SYMBOL, but not declared it in spi-mem.h. This patch declares spi_mem_default_supports_op() in spi-mem.h and also removes the static from the function prototype. Signed-off-by: Naga Sureshkumar Relli Signed-off-by: Mark Brown

spi: spi-mem: Add devm_spi_mem_dirmap_{create,destroy}()

2019-01-21T17:58:12Z

Since direct mapping descriptors usually the same lifetime as the SPI MEM device adding devm_ variants of the spi_mem_dirmap_{create,destroy}() should greatly simplify error/remove path of spi-mem drivers making use of the direct mapping API. Signed-off-by: Boris Brezillon Signed-off-by: Mark Brown

spi: spi-mem: Add a new API to support direct mapping

2018-11-20T16:26:57Z

Most modern SPI controllers can directly map a SPI memory (or a portion of the SPI memory) in the CPU address space. Most of the time this brings significant performance improvements as it automates the whole process of sending SPI memory operations every time a new region is accessed. This new API allows SPI memory drivers to create direct mappings and then use them to access the memory instead of using spi_mem_exec_op(). Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Signed-off-by: Mark Brown

spi: spi-mem: Add SPI_MEM_NO_DATA to the spi_mem_data_dir enum

2018-11-20T16:26:26Z

When defining spi_mem_op templates we don't necessarily know the size that will be passed when the template is actually used, and basing the supports_op() check on op->data.nbytes to know whether there will be data transferred for a specific operation is this not possible. Add SPI_MEM_NO_DATA to the spi_mem_data_dir enum so that we can base our checks on op->data.dir instead of op->data.nbytes. Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Signed-off-by: Mark Brown

spi: spi-mem: Add missing word in the SPI_MEM_DATA_OUT description

2018-11-20T16:26:02Z

Missing 'to' in the SPI_MEM_DATA_OUT description. Signed-off-by: Boris Brezillon Reviewed-by: Miquel Raynal Signed-off-by: Mark Brown

Merge tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

2018-09-29T01:04:06Z

Mark writes: "spi: Fixes for v4.19 Quite a few fixes for the Renesas drivers in here, plus a fix for the Tegra driver and some documentation fixes for the recently added spi-mem code. The Tegra fix is relatively large but fairly straightforward and mechanical, it runs on probe so it's been reasonably well covered in -next testing." * tag 'spi-fix-v4.19-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: spi: spi-mem: Move the DMA-able constraint doc to the kerneldoc header spi: spi-mem: Add missing description for data.nbytes field spi: rspi: Fix interrupted DMA transfers spi: rspi: Fix invalid SPI use during system suspend spi: sh-msiof: Fix handling of write value for SISTR register spi: sh-msiof: Fix invalid SPI use during system suspend spi: gpio: Fix copy-and-paste error spi: tegra20-slink: explicitly enable/disable clock

spi: spi-mem: Move the DMA-able constraint doc to the kerneldoc header

2018-09-20T19:23:31Z

We'd better have that documented in the kerneldoc header, so that it's exposed to the doc generated by Sphinx. Signed-off-by: Boris Brezillon Signed-off-by: Mark Brown

spi: spi-mem: Add missing description for data.nbytes field

2018-09-20T19:23:25Z

Add a description for spi_mem_op.data.nbytes to the kerneldoc header. Fixes: c36ff266dc82 ("spi: Extend the core to ease integration of SPI memory controllers") Signed-off-by: Boris Brezillon Signed-off-by: Mark Brown