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spi: spi-fsl-dspi: Demistify magic value in SPI_SR_CLEAR 

This patch adds the field definitions for the SPI_SR register. The SPI
status register is write-1-to-clear and this value is written at init
time.

Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20190818180115.31114-5-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vladimir Oltean 2019-08-18 21:01:05 +03:00 committed by Mark Brown
parent b2655196cf
commit 9e6f784e66
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1 changed files with 13 additions and 1 deletions
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14
drivers/spi/spi-fsl-dspi.c
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@ -57,7 +57,19 @@
#define SPI_SR 0x2c
#define SPI_SR_TCFQF BIT(31)
#define SPI_SR_EOQF BIT(28)
#define SPI_SR_CLEAR 0x9aaf0000
#define SPI_SR_TFUF BIT(27)
#define SPI_SR_TFFF BIT(25)
#define SPI_SR_CMDTCF BIT(23)
#define SPI_SR_SPEF BIT(21)
#define SPI_SR_RFOF BIT(19)
#define SPI_SR_TFIWF BIT(18)
#define SPI_SR_RFDF BIT(17)
#define SPI_SR_CMDFFF BIT(16)
#define SPI_SR_CLEAR (SPI_SR_TCFQF | SPI_SR_EOQF | \
SPI_SR_TFUF | SPI_SR_TFFF | \
SPI_SR_CMDTCF | SPI_SR_SPEF | \
SPI_SR_RFOF | SPI_SR_TFIWF | \
SPI_SR_RFDF | SPI_SR_CMDFFF)
#define SPI_RSER_TFFFE BIT(25)
#define SPI_RSER_TFFFD BIT(24)