[PATCH v4 06/10] s5p-fimc: Use pinctrl API for camera ports configuration
From: s.nawrocki@samsung.com (Sylwester Nawrocki)
Date: 2013-02-01 19:09:27
Also in:
linux-devicetree, linux-media, linux-samsung-soc
Subsystem:
media input infrastructure (v4l/dvb), open firmware and flattened device tree bindings, the rest · Maintainers:
Mauro Carvalho Chehab, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> 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