Hi,
On Sat, Jul 06, 2013 at 08:58:00AM +0400, Alexander Shiyan wrote:
> Patch adds DT support for MC13783/MC13892 PMICs.
>
> Signed-off-by: Alexander Shiyan <[email protected]>
> ---
> Documentation/devicetree/bindings/mfd/mc13xxx.txt | 12 +++++
> drivers/input/misc/mc13783-pwrbutton.c | 59
> ++++++++++++++++++-----
> 2 files changed, 58 insertions(+), 13 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/mfd/mc13xxx.txt
> b/Documentation/devicetree/bindings/mfd/mc13xxx.txt
> index abd9e3c..967bed6 100644
> --- a/Documentation/devicetree/bindings/mfd/mc13xxx.txt
> +++ b/Documentation/devicetree/bindings/mfd/mc13xxx.txt
> @@ -10,6 +10,11 @@ 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
> + "btn<num>" and contain code in "linux,code" property. Optional properties:
gpio_keys also defines button node bindings. Why don't you use the same
name format (button@<num>)?
> + 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 +94,13 @@ ecspi@70010000 { /* ECSPI1 */
> interrupt-parent = <&gpio0>;
> interrupts = <8>;
>
> + buttons {
> + btn1 {
> + 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 855d576..05bb570 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>
> @@ -121,21 +122,28 @@ 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;
> @@ -143,15 +151,36 @@ static int __init mc13xxx_pwrbutton_probe(struct
> platform_device *pdev)
>
> for (i = 0; i < MAX13XXX_NUM_BUTTONS; i++) {
> u16 code, invert, reset, debounce;
> + const __be32 *prop;
> + char childname[5];
>
> - 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;
> + if (parent) {
> + sprintf(childname, "btn%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_get_property(child, "active-high", NULL);
> + reset = !!of_get_property(child, "enable-reset", NULL);
You can use of_property_read_bool here.
Regards,
Markus
> + 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)
> @@ -186,6 +215,10 @@ 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
>
>
--
To unsubscribe from this list: send the line "unsubscribe linux-input" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
