Before the camera ports can be used the pinmux needs to be configured
properly. This patch adds a function to set the camera ports pinctrl
to a default state within the media driver's probe().
The camera port(s) are then configured for the video bus operation.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
Changes since v3:
- removed the "inactive" pinctrl state, it will be added later if required
---
.../devicetree/bindings/media/soc/samsung-fimc.txt | 7 +++++++
drivers/media/platform/s5p-fimc/fimc-mdevice.c | 9 +++++++++
2 files changed, 16 insertions(+)
diff --git a/Documentation/devicetree/bindings/media/soc/samsung-fimc.txt b/Documentation/devicetree/bindings/media/soc/samsung-fimc.txt
index 6b81ad1..3788305 100644
--- a/Documentation/devicetree/bindings/media/soc/samsung-fimc.txt
+++ b/Documentation/devicetree/bindings/media/soc/samsung-fimc.txt
@@ -18,6 +18,10 @@ Required properties:
- compatible : must be "samsung,fimc", "simple-bus"
+- pinctrl-names : pinctrl names for camera port pinmux control, at least
+ "default" needs to be specified.
+- pinctrl-0...N : pinctrl properties corresponding to pinctrl-names
+
The 'camera' node must include at least one 'fimc' child node.
@@ -133,6 +137,9 @@ Example:
#size-cells = <1>;
status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&cam_port_a_clk_active>;
+
/* parallel camera ports */
parallel-ports {
/* camera A input */
diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.c b/drivers/media/platform/s5p-fimc/fimc-mdevice.c
index 2bb501f..6c2c9e3 100644
--- a/drivers/media/platform/s5p-fimc/fimc-mdevice.c
+++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.c
@@ -21,6 +21,7 @@
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <linux/of_i2c.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/types.h>
@@ -1197,6 +1198,14 @@ static int fimc_md_probe(struct platform_device *pdev)
/* Protect the media graph while we're registering entities */
mutex_lock(&fmd->media_dev.graph_mutex);
+ if (dev->of_node) {
+ struct pinctrl *pctl = devm_pinctrl_get_select_default(dev);
+ if (IS_ERR(pctl)) {
+ ret = PTR_ERR(pctl);
+ goto err_unlock;
+ }
+ }
+
if (fmd->pdev->dev.of_node)
ret = fimc_md_register_of_platform_entities(fmd, dev->of_node);
else
--
1.7.9.5
--
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