[PATCH V2 3/5] spi: s3c64xx: Added provision for non-gpio i/o's
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
---
changes in v2:
Removed the gpio quirk. Parse the "gpios" property
to decide whether gpio / dedicated i/o lines should
be used.
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 45bad5d..a8fe876 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1157,6 +1157,9 @@ static int s3c64xx_spi_parse_dt_gpio(struct
s3c64xx_spi_driver_data *sdd)
struct device *dev = >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);
@@ -1183,6 +1186,11 @@ free_gpio:
static void s3c64xx_spi_dt_gpio_free(struct s3c64xx_spi_driver_data *sdd)
{
unsigned int idx;
+ struct device *dev = >pdev->dev;
+
+ if (!of_find_property(dev->of_node, "gpios", NULL))
+ return;
+
for (idx = 0; idx < 3; idx++)
gpio_free(sdd->gpios[idx]);
}
--
1.7.10.4
--
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[PATCH V2 3/5] spi: s3c64xx: Added provision for non-gpio i/o's
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
---
changes in v2:
Removed the gpio quirk. Parse the gpios property
to decide whether gpio / dedicated i/o lines should
be used.
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 45bad5d..a8fe876 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1157,6 +1157,9 @@ 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);
@@ -1183,6 +1186,11 @@ 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]);
}
--
1.7.10.4
--
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