From 96bdb2c961bb6555b4448a74921573a8dd3c767b Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 16 Jan 2019 09:21:09 +0100 Subject: [PATCH] spi: cadence: Fix default polarity of native chipselect The Cadence controller also supports platforms specifying native chipselects. When I enforce the use of high CS for drivers opting in for using GPIO descriptors, I inadvertedly switched the driver to also use active high chip select for native chip selects. Fix this by inverting the logic in the callback for the native chip select. Rename the parameter from "is_high" (which is interpreted as being high when 0, which is confusing, I will not make any drug-related jokes here) to "enabled" which is more intuitive, especially now that it is true when CS is supposed to be enabled. Cc: Wei Yongjun Fixes: cfeefa79dc37 ("spi: cadence: Convert to use CS GPIO descriptors") Signed-off-by: Linus Walleij Signed-off-by: Mark Brown Signed-off-by: Zou Cao Reviewed-by: Baoyou Xie --- drivers/spi/spi-cadence.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c index e332d173dbf9..f635cf073601 100644 --- a/drivers/spi/spi-cadence.c +++ b/drivers/spi/spi-cadence.c @@ -172,16 +172,16 @@ static void cdns_spi_init_hw(struct cdns_spi *xspi) /** * cdns_spi_chipselect - Select or deselect the chip select line * @spi: Pointer to the spi_device structure - * @is_high: Select(0) or deselect (1) the chip select line + * @enable: Select (1) or deselect (0) the chip select line */ -static void cdns_spi_chipselect(struct spi_device *spi, bool is_high) +static void cdns_spi_chipselect(struct spi_device *spi, bool enable) { struct cdns_spi *xspi = spi_master_get_devdata(spi->master); u32 ctrl_reg; ctrl_reg = cdns_spi_read(xspi, CDNS_SPI_CR); - if (is_high) { + if (!enable) { /* Deselect the slave */ ctrl_reg |= CDNS_SPI_CR_SSCTRL; } else { -- GitLab