Commit Graph

5 Commits

Author SHA1 Message Date
Colin Ian King
808f5154a7 spi: pic32: fix spelling mistakes on macro names
Trivial fix to spelling mistakes macros; fix EMPTY spellings:
RX_FIFO_EMTPY -> RX_FIFO_EMPTY
TX_FIFO_EMTPY -> TX_FIFO_EMPTY

Note that there are no other occurrances of these macros in the
source.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-07-26 13:04:21 +01:00
Nicholas Mc Guire
57c2b0ddd1 spi: pic32: fixup wait_for_completion_timeout return handling
wait_for_completion_timeout returns unsigned long not int so the check for
<= 0 should be == 0 here.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-07-24 21:49:16 +01:00
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