ar71xx: pb44_spi: introduce pb44_spi_{en,dis}able helpers

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29708 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/drivers/spi/pb44_spi.c b/target/linux/ar71xx/files/drivers/spi/pb44_spi.c
index ee52099..61c22f5 100644 (file)
--- a/target/linux/ar71xx/files/drivers/spi/pb44_spi.c
+++ b/target/linux/ar71xx/files/drivers/spi/pb44_spi.c
@@ -86,10 +86,8 @@ static void pb44_spi_chipselect(struct spi_device *spi, int is_active)
 
 }
 
-static int pb44_spi_setup_cs(struct spi_device *spi)
+static void pb44_spi_enable(struct ar71xx_spi *sp)
 {
-       struct ar71xx_spi *sp = spidev_to_sp(spi);
-
        /* enable GPIO mode */
        pb44_spi_wr(sp, SPI_REG_FS, SPI_FS_GPIO);
 
@@ -97,8 +95,22 @@ static int pb44_spi_setup_cs(struct spi_device *spi)
        sp->reg_ctrl = pb44_spi_rr(sp, SPI_REG_CTRL);
        sp->ioc_base = pb44_spi_rr(sp, SPI_REG_IOC);
 
-       /* TODO: setup speed? */
        pb44_spi_wr(sp, SPI_REG_CTRL, 0x43);
+}
+
+static void pb44_spi_disable(struct ar71xx_spi *sp)
+{
+       /* restore CTRL register */
+       pb44_spi_wr(sp, SPI_REG_CTRL, sp->reg_ctrl);
+       /* disable GPIO mode */
+       pb44_spi_wr(sp, SPI_REG_FS, 0);
+}
+
+static int pb44_spi_setup_cs(struct spi_device *spi)
+{
+       struct ar71xx_spi *sp = spidev_to_sp(spi);
+
+       pb44_spi_enable(sp);
 
        if (spi->chip_select) {
                unsigned long gpio = (unsigned long) spi->controller_data;
@@ -133,10 +145,7 @@ static void pb44_spi_cleanup_cs(struct spi_device *spi)
                gpio_free(gpio);
        }
 
-       /* restore CTRL register */
-       pb44_spi_wr(sp, SPI_REG_CTRL, sp->reg_ctrl);
-       /* disable GPIO mode */
-       pb44_spi_wr(sp, SPI_REG_FS, 0);
+       pb44_spi_disable(sp);
 }
 
 static int pb44_spi_setup(struct spi_device *spi)