system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-10-06 11:25:23 +00:00
Code Issues Packages Projects Releases Wiki Activity

spi: stm32h7: replace private SPI_1HZ_NS with NSEC_PER_SEC

Browse source 
Replace SPI_1HZ_NS private constant with NSEC_PER_SEC, which is easier
to read and understand.

Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Link: https://lore.kernel.org/r/1612551572-495-8-git-send-email-alain.volmat@foss.st.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Amelie Delaunay 2021-02-05 19:59:31 +01:00 committed by Mark Brown
parent c63b95b76e
commit e1e2093b16
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 1 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/spi/spi-stm32.c
View file

@ -162,8 +162,6 @@
#define SPI_3WIRE_TX 3
#define SPI_3WIRE_RX 4
#define SPI_1HZ_NS 1000000000
/*
* use PIO for small transfers, avoiding DMA setup/teardown overhead for drivers
* without fifo buffers.
@ -1525,7 +1523,7 @@ static void stm32h7_spi_data_idleness(struct stm32_spi *spi, u32 len)
cfg2_clrb |= STM32H7_SPI_CFG2_MIDI;
if ((len > 1) && (spi->cur_midi > 0)) {
u32 sck_period_ns = DIV_ROUND_UP(SPI_1HZ_NS, spi->cur_speed);
u32 sck_period_ns = DIV_ROUND_UP(NSEC_PER_SEC, spi->cur_speed);
u32 midi = min_t(u32,
DIV_ROUND_UP(spi->cur_midi, sck_period_ns),
FIELD_GET(STM32H7_SPI_CFG2_MIDI,