diff options
| author | Mark Brown <broonie@linaro.org> | 2014-01-24 20:00:55 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-02-04 13:49:10 +0100 |
| commit | 4ddc86005b1266b81c7b1b574a2402d3d8deda44 (patch) | |
| tree | 5b68d70e5191616e235ee569adb990c34170267b | |
| parent | spi: Provide core support for DMA mapping transfers (diff) | |
| download | linux-4ddc86005b1266b81c7b1b574a2402d3d8deda44.tar.xz linux-4ddc86005b1266b81c7b1b574a2402d3d8deda44.zip | |
spi/s3c64xx: Remove unused /CS GPIO management
The GPIO enable and disable is done in the core so does not need to be
replicated in the driver, delete the unneeded code. enable_cs() was not
referenced at all.
Signed-off-by: Mark Brown <broonie@linaro.org>
| -rw-r--r-- | drivers/spi/spi-s3c64xx.c | 29 |
1 files changed, 0 insertions, 29 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index ae907dde1371..da32cd9c9b59 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -555,23 +555,6 @@ static void enable_datapath(struct s3c64xx_spi_driver_data *sdd, writel(chcfg, regs + S3C64XX_SPI_CH_CFG); } -static inline void enable_cs(struct s3c64xx_spi_driver_data *sdd, - struct spi_device *spi) -{ - if (sdd->tgl_spi != NULL) { /* If last device toggled after mssg */ - if (sdd->tgl_spi != spi) { /* if last mssg on diff device */ - /* Deselect the last toggled device */ - if (spi->cs_gpio >= 0) - gpio_set_value(spi->cs_gpio, - spi->mode & SPI_CS_HIGH ? 0 : 1); - } - sdd->tgl_spi = NULL; - } - - if (spi->cs_gpio >= 0) - gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH ? 1 : 0); -} - static u32 s3c64xx_spi_wait_for_timeout(struct s3c64xx_spi_driver_data *sdd, int timeout_ms) { @@ -691,16 +674,6 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd, return 0; } -static inline void disable_cs(struct s3c64xx_spi_driver_data *sdd, - struct spi_device *spi) -{ - if (sdd->tgl_spi == spi) - sdd->tgl_spi = NULL; - - if (spi->cs_gpio >= 0) - gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH ? 0 : 1); -} - static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) { void __iomem *regs = sdd->regs; @@ -1092,14 +1065,12 @@ static int s3c64xx_spi_setup(struct spi_device *spi) pm_runtime_put(&sdd->pdev->dev); writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL); - disable_cs(sdd, spi); return 0; setup_exit: pm_runtime_put(&sdd->pdev->dev); /* setup() returns with device de-selected */ writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL); - disable_cs(sdd, spi); gpio_free(cs->line); spi_set_ctldata(spi, NULL); |