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authorMark Brown <broonie@linaro.org>2014-01-24 19:00:55 +0000
committerMark Brown <broonie@linaro.org>2014-02-04 12:49:10 +0000
commit4ddc86005b1266b81c7b1b574a2402d3d8deda44 (patch)
tree5b68d70e5191616e235ee569adb990c34170267b /drivers/spi/spi-s3c64xx.c
parent99adef310f682d6343cb40c1f6c9c25a4b3a450d (diff)
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>
Diffstat (limited to 'drivers/spi/spi-s3c64xx.c')
-rw-r--r--drivers/spi/spi-s3c64xx.c29
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);