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3 Commits

Author SHA1 Message Date
Axel Lin
866e48b099 spi: pic32: Fix checking return value of devm_ioremap_resource 
devm_ioremap_resource() returns ERR_PTR on error.
Also remove the redundant dev_err message, the implementation of
devm_ioremap_resource() already print error messages on error paths.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
 2016-04-29 12:34:20 +01:00
Axel Lin
2452ee2525 spi: pic32: Set proper bits_per_word_mask 
This driver only supports 8/16/32 bits_per_word, so set
master->bits_per_word_mask accordingly. With this change, we can remove
the spi->bits_per_word checking in pic32_spi_setup as it's done by spi
core.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
 2016-04-26 11:14:35 +01:00
Purna Chandra Mandal
1bcb9f8ceb spi: spi-pic32: Add PIC32 SPI master driver 
The PIC32 SPI driver is capable of performing SPI transfers
using PIO or external DMA engine. GPIO controlled /CS support
is made default in the driver for correct operation of the
controller. This can be enabled by adding "cs-gpios" property
of the SPI node in board dts file.

Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
 2016-04-04 10:04:29 -07:00