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path: root/drivers/spi/spi_s3c24xx.c
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Diffstat (limited to 'drivers/spi/spi_s3c24xx.c')
-rw-r--r--drivers/spi/spi_s3c24xx.c22
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/spi/spi_s3c24xx.c b/drivers/spi/spi_s3c24xx.c
index 6e834b8b9d27..b7476b888197 100644
--- a/drivers/spi/spi_s3c24xx.c
+++ b/drivers/spi/spi_s3c24xx.c
@@ -192,8 +192,11 @@ static int s3c24xx_spi_txrx(struct spi_device *spi, struct spi_transfer *t)
hw->len = t->len;
hw->count = 0;
+ init_completion(&hw->done);
+
/* send the first byte */
writeb(hw_txbyte(hw, 0), hw->regs + S3C2410_SPTDAT);
+
wait_for_completion(&hw->done);
return hw->count;
@@ -235,6 +238,7 @@ static irqreturn_t s3c24xx_spi_irq(int irq, void *dev)
static int __init s3c24xx_spi_probe(struct platform_device *pdev)
{
+ struct s3c2410_spi_info *pdata;
struct s3c24xx_spi *hw;
struct spi_master *master;
struct resource *res;
@@ -251,10 +255,10 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
memset(hw, 0, sizeof(struct s3c24xx_spi));
hw->master = spi_master_get(master);
- hw->pdata = pdev->dev.platform_data;
+ hw->pdata = pdata = pdev->dev.platform_data;
hw->dev = &pdev->dev;
- if (hw->pdata == NULL) {
+ if (pdata == NULL) {
dev_err(&pdev->dev, "No platform data supplied\n");
err = -ENOENT;
goto err_no_pdata;
@@ -263,6 +267,10 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, hw);
init_completion(&hw->done);
+ /* setup the master state. */
+
+ master->num_chipselect = hw->pdata->num_cs;
+
/* setup the state for the bitbang driver */
hw->bitbang.master = hw->master;
@@ -330,13 +338,13 @@ static int __init s3c24xx_spi_probe(struct platform_device *pdev)
/* setup any gpio we can */
- if (!hw->pdata->set_cs) {
+ if (!pdata->set_cs) {
hw->set_cs = s3c24xx_spi_gpiocs;
- s3c2410_gpio_setpin(hw->pdata->pin_cs, 1);
- s3c2410_gpio_cfgpin(hw->pdata->pin_cs, S3C2410_GPIO_OUTPUT);
+ s3c2410_gpio_setpin(pdata->pin_cs, 1);
+ s3c2410_gpio_cfgpin(pdata->pin_cs, S3C2410_GPIO_OUTPUT);
} else
- hw->set_cs = hw->pdata->set_cs;
+ hw->set_cs = pdata->set_cs;
/* register our spi controller */
@@ -415,7 +423,7 @@ static int s3c24xx_spi_resume(struct platform_device *pdev)
#define s3c24xx_spi_resume NULL
#endif
-MODULE_ALIAS("s3c2410_spi"); /* for platform bus hotplug */
+MODULE_ALIAS("platform:s3c2410-spi");
static struct platform_driver s3c24xx_spidrv = {
.remove = __exit_p(s3c24xx_spi_remove),
.suspend = s3c24xx_spi_suspend,