[PATCH 09/13] spi: atmel: use endian agnostic IO
From: Ben Dooks <hidden>
Date: 2015-03-18 15:53:08
Also in:
linux-spi
Subsystem:
microchip spi driver, spi subsystem, the rest · Maintainers:
Ryan Wanner, Mark Brown, Linus Torvalds
Use the endian agnositc IO functions instead of the __raw ones for when the driver is in use on big-endian systems. Signed-off-by: Ben Dooks <redacted> -- CC: Nicolas Ferre <redacted> (supporter:ATMEL SPI DRIVER) CC: Mark Brown <broonie@kernel.org> (maintainer:SPI SUBSYSTEM) CC: linux-spi at vger.kernel.org (open list:SPI SUBSYSTEM) --- drivers/spi/spi-atmel.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-atmel.c b/drivers/spi/spi-atmel.c
index 06de340..a2f40b1 100644
--- a/drivers/spi/spi-atmel.c
+++ b/drivers/spi/spi-atmel.c@@ -180,11 +180,17 @@ | SPI_BF(name, value)) /* Register access macros */ +#ifdef CONFIG_AVR32 #define spi_readl(port, reg) \ __raw_readl((port)->regs + SPI_##reg) #define spi_writel(port, reg, value) \ __raw_writel((value), (port)->regs + SPI_##reg) - +#else +#define spi_readl(port, reg) \ + readl_relaxed((port)->regs + SPI_##reg) +#define spi_writel(port, reg, value) \ + writel_relaxed((value), (port)->regs + SPI_##reg) +#endif /* use PIO for small transfers, avoiding DMA setup/teardown overhead and * cache operations; better heuristics consider wordsize and bitrate. */
--
2.1.4