Patch adds DT support for MC13783/MC13892 PMICs.
Signed-off-by: Alexander Shiyan <shc_work@xxxxxxx>
---
Documentation/devicetree/bindings/mfd/mc13xxx.txt | 13 +++++
drivers/input/misc/mc13783-pwrbutton.c | 61 +++++++++++++++++------
2 files changed, 60 insertions(+), 14 deletions(-)
diff --git a/Documentation/devicetree/bindings/mfd/mc13xxx.txt b/Documentation/devicetree/bindings/mfd/mc13xxx.txt
index abd9e3c..cf8b61c 100644
--- a/Documentation/devicetree/bindings/mfd/mc13xxx.txt
+++ b/Documentation/devicetree/bindings/mfd/mc13xxx.txt
@@ -10,6 +10,12 @@ Optional properties:
- fsl,mc13xxx-uses-touch : Indicate the touchscreen controller is being used
Sub-nodes:
+- buttons : Contain power button nodes. Each button should be declared as
+ "button@<num>" and contain code in "linux,code" property.
+ Optional properties:
+ active-high : Change active button level from 0 to 1.
+ enable-reset: Performs hadware reset through PMIC.
+ debounce : Debounce value which will be taken from PMIC datasheet.
- regulators : Contain the regulator nodes. The regulators are bound using
their names as listed below with their registers and bits for enabling.
@@ -89,6 +95,13 @@ ecspi@70010000 { /* ECSPI1 */
interrupt-parent = <&gpio0>;
interrupts = <8>;
+ buttons {
+ button@1 {
+ linux,code = <0x1f>;
+ debounce = <1>;
+ };
+ };
+
regulators {
sw1_reg: mc13892__sw1 {
regulator-min-microvolt = <600000>;
diff --git a/drivers/input/misc/mc13783-pwrbutton.c b/drivers/input/misc/mc13783-pwrbutton.c
index 2e21f19..3f9cfd1 100644
--- a/drivers/input/misc/mc13783-pwrbutton.c
+++ b/drivers/input/misc/mc13783-pwrbutton.c
@@ -24,6 +24,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/input.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/mfd/mc13783.h>
#include <linux/mfd/mc13892.h>
@@ -77,21 +78,28 @@ static int __init mc13xxx_pwrbutton_probe(struct platform_device *pdev)
struct mc13xxx *mc13xxx = dev_get_drvdata(pdev->dev.parent);
struct mc13xxx_pwrb_devtype *devtype =
(struct mc13xxx_pwrb_devtype *)pdev->id_entry->driver_data;
+ struct device_node *parent, *child;
struct mc13xxx_pwrb *priv;
int i, reg = 0, ret = -EINVAL;
- if (!pdata) {
+ of_node_get(pdev->dev.parent->of_node);
+ parent = of_find_node_by_name(pdev->dev.parent->of_node, "buttons");
+ if (!pdata && !parent) {
dev_err(&pdev->dev, "Missing platform data\n");
return -ENODEV;
}
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
- if (!priv)
- return -ENOMEM;
+ if (!priv) {
+ ret = -ENOMEM;
+ goto out_node_put;
+ }
priv->input = devm_input_allocate_device(&pdev->dev);
- if (!priv->input)
- return -ENOMEM;
+ if (!priv->input) {
+ ret = -ENOMEM;
+ goto out_node_put;
+ }
priv->mc13xxx = mc13xxx;
priv->devtype = devtype;
@@ -99,15 +107,36 @@ static int __init mc13xxx_pwrbutton_probe(struct platform_device *pdev)
for (i = 0; i < MAX13XXX_NUM_BUTTONS; i++) {
u16 code, invert, reset, debounce;
-
- if (!(pdata->buttons[i].flags & MC13XXX_BUTTON_ENABLE))
- continue;
- code = pdata->buttons[i].keycode;
- invert = !!(pdata->buttons[i].flags &
- MC13XXX_BUTTON_POL_INVERT);
- reset = !!(pdata->buttons[i].flags &
- MC13XXX_BUTTON_RESET_EN);
- debounce = pdata->buttons[i].flags;
+ const __be32 *prop;
+ char childname[5];
+
+ if (parent) {
+ sprintf(childname, "button@%i", i + 1);
+ child = of_get_child_by_name(parent, childname);
+ if (!child)
+ continue;
+ prop = of_get_property(child, "linux,code", NULL);
+ if (prop)
+ code = be32_to_cpu(*prop) & 0xffff;
+ else {
+ dev_err(&pdev->dev,
+ "Button %i: Missing key code\n", i + 1);
+ continue;
+ }
+ invert = of_property_read_bool(child, "active-high");
+ reset = of_property_read_bool(child, "enable-reset");
+ prop = of_get_property(child, "debounce", NULL);
+ debounce = prop ? be32_to_cpu(*prop) : 0;
+ } else {
+ if (!(pdata->buttons[i].flags & MC13XXX_BUTTON_ENABLE))
+ continue;
+ code = pdata->buttons[i].keycode;
+ invert = !!(pdata->buttons[i].flags &
+ MC13XXX_BUTTON_POL_INVERT);
+ reset = !!(pdata->buttons[i].flags &
+ MC13XXX_BUTTON_RESET_EN);
+ debounce = pdata->buttons[i].flags;
+ }
priv->btn_code[i] = code;
if (code != KEY_RESERVED)
@@ -155,6 +184,10 @@ static int __init mc13xxx_pwrbutton_probe(struct platform_device *pdev)
if (ret)
dev_err(&pdev->dev, "Can't register input device: %i\n", ret);
+out_node_put:
+ if (parent)
+ of_node_put(parent);
+
return ret;
}
--
1.8.1.5
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