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spi/s3c64xx: Use core cs_gpio field

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Rather than using the driver custom platform data to store the chip select
GPIO use the cs_gpio field provided by the SPI core, supporting future
refectoring.

Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Mark Brown 2013-09-27 18:58:55 +01:00
parent 64d930ac11
commit dd97e26849
1 changed files with 10 additions and 14 deletions
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24
drivers/spi/spi-s3c64xx.c
View file

@ -558,22 +558,18 @@ static void enable_datapath(struct s3c64xx_spi_driver_data *sdd,
static inline void enable_cs(struct s3c64xx_spi_driver_data *sdd,
struct spi_device *spi)
{
struct s3c64xx_spi_csinfo *cs;
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 */
cs = sdd->tgl_spi->controller_data;
if (sdd->cs_gpio)
gpio_set_value(cs->line,
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio,
spi->mode & SPI_CS_HIGH ? 0 : 1);
}
sdd->tgl_spi = NULL;
}
cs = spi->controller_data;
if (sdd->cs_gpio)
gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 1 : 0);
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH ? 1 : 0);
/* Start the signals */
writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
@ -701,13 +697,11 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd,
static inline void disable_cs(struct s3c64xx_spi_driver_data *sdd,
struct spi_device *spi)
{
struct s3c64xx_spi_csinfo *cs = spi->controller_data;
if (sdd->tgl_spi == spi)
sdd->tgl_spi = NULL;
if (sdd->cs_gpio)
gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 0 : 1);
if (spi->cs_gpio >= 0)
gpio_set_value(spi->cs_gpio, spi->mode & SPI_CS_HIGH ? 0 : 1);
/* Quiese the signals */
writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL);
@ -1070,6 +1064,8 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
cs->line, err);
goto err_gpio_req;
}
spi->cs_gpio = cs->line;
}
spi_set_ctldata(spi, cs);
@ -1139,8 +1135,8 @@ static void s3c64xx_spi_cleanup(struct spi_device *spi)
struct s3c64xx_spi_driver_data *sdd;
sdd = spi_master_get_devdata(spi->master);
if (cs && sdd->cs_gpio) {
gpio_free(cs->line);
if (spi->cs_gpio) {
gpio_free(spi->cs_gpio);
if (spi->dev.of_node)
kfree(cs);
}