From: Girish K S <girishks2...@gmail.com>
Currently the drivers supports only the GPIO based i/o pins.
But there are Exynos SoC's that use the same controller with
dedicated i/o pins.
This patch provides provision to support gpio/dedicated pins.
The decision is made by parsing the "gpios" property in the spi
node.
Signed-off-by: Girish K S <ks.g...@samsung.com>
---
drivers/spi/spi-s3c64xx.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 054b8d4..94716d1 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1112,6 +1112,9 @@ static int s3c64xx_spi_parse_dt_gpio(struct
s3c64xx_spi_driver_data *sdd)
struct device *dev = &sdd->pdev->dev;
int idx, gpio, ret;
+ if (!of_find_property(dev->of_node, "gpios", NULL))
+ return 0;
+
/* find gpios for mosi, miso and clock lines */
for (idx = 0; idx < 3; idx++) {
gpio = of_get_gpio(dev->of_node, idx);
@@ -1138,6 +1141,11 @@ free_gpio:
static void s3c64xx_spi_dt_gpio_free(struct s3c64xx_spi_driver_data *sdd)
{
unsigned int idx;
+ struct device *dev = &sdd->pdev->dev;
+
+ if (!of_find_property(dev->of_node, "gpios", NULL))
+ return;
+
for (idx = 0; idx < 3; idx++)
gpio_free(sdd->gpios[idx]);
}
--
1.8.0
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