Input: tl6040-vibra - Device Tree support

Enable DT based probing of the vibra driver.

Example of dts section to load the twl6040-vibra driver:
twl6040: twl6040@4b {
	...
	twl6040_vibra: twl6040@1 {
		compatible = "ti,twl6040-vibra";
		interrupts = <4>;
		vddvibl-supply = <&vbat>;
		vddvibr-supply = <&vbat>;
		vibldrv_res = <8>;
		vibrdrv_res = <3>;
		viblmotor_res = <10>;
		vibrmotor_res = <10>;
	};
};

[Sasha Levin <levinsasha928@gmail.com>: fixed build error]
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

diff --git a/Documentation/devicetree/bindings/input/twl6040-vibra.txt b/Documentation/devicetree/bindings/input/twl6040-vibra.txt
new file mode 100644 (file)
index 0000000..5b1918b
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/twl6040-vibra.txt
@@ -0,0 +1,37 @@
+Vibra driver for the twl6040 family
+
+The vibra driver is a child of the twl6040 MFD dirver.
+Documentation/devicetree/bindings/mfd/twl6040.txt
+
+Required properties:
+- compatible : Must be "ti,twl6040-vibra";
+- interrupts: 4, Vibra overcurrent interrupt
+- vddvibl-supply: Regulator supplying the left vibra motor
+- vddvibr-supply: Regulator supplying the right vibra motor
+- vibldrv_res: Board specific left driver resistance
+- vibrdrv_res: Board specific right driver resistance
+- viblmotor_res: Board specific left motor resistance
+- vibrmotor_res: Board specific right motor resistance
+
+Optional properties:
+- vddvibl_uV: If the vddvibl default voltage need to be changed
+- vddvibr_uV: If the vddvibr default voltage need to be changed
+
+Example:
+/*
+ * 8-channel high quality low-power audio codec
+ * http://www.ti.com/lit/ds/symlink/twl6040.pdf
+ */
+twl6040: twl6040@4b {
+       ...
+       twl6040_vibra: twl6040@1 {
+               compatible = "ti,twl6040-vibra";
+               interrupts = <4>;
+               vddvibl-supply = <&vbat>;
+               vddvibr-supply = <&vbat>;
+               vibldrv_res = <8>;
+               vibrdrv_res = <3>;
+               viblmotor_res = <10>;
+               vibrmotor_res = <10>;
+       };
+};

diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c
index 14e94f5..c34f6c0 100644 (file)
--- a/drivers/input/misc/twl6040-vibra.c
+++ b/drivers/input/misc/twl6040-vibra.c
@@ -27,6 +27,7 @@
  */
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/of.h>
 #include <linux/workqueue.h>
 #include <linux/input.h>
 #include <linux/mfd/twl6040.h>
@@ -258,10 +259,13 @@ static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL);
 static int __devinit twl6040_vibra_probe(struct platform_device *pdev)
 {
        struct twl6040_vibra_data *pdata = pdev->dev.platform_data;
+       struct device_node *node = pdev->dev.of_node;
        struct vibra_info *info;
+       int vddvibl_uV = 0;
+       int vddvibr_uV = 0;
        int ret;
 
-       if (!pdata) {
+       if (!pdata && !node) {
                dev_err(&pdev->dev, "platform_data not available\n");
                return -EINVAL;
        }
@@ -273,11 +277,26 @@ static int __devinit twl6040_vibra_probe(struct platform_device *pdev)
        }
 
        info->dev = &pdev->dev;
+
        info->twl6040 = dev_get_drvdata(pdev->dev.parent);
-       info->vibldrv_res = pdata->vibldrv_res;
-       info->vibrdrv_res = pdata->vibrdrv_res;
-       info->viblmotor_res = pdata->viblmotor_res;
-       info->vibrmotor_res = pdata->vibrmotor_res;
+       if (pdata) {
+               info->vibldrv_res = pdata->vibldrv_res;
+               info->vibrdrv_res = pdata->vibrdrv_res;
+               info->viblmotor_res = pdata->viblmotor_res;
+               info->vibrmotor_res = pdata->vibrmotor_res;
+               vddvibl_uV = pdata->vddvibl_uV;
+               vddvibr_uV = pdata->vddvibr_uV;
+       } else {
+               of_property_read_u32(node, "vibldrv_res", &info->vibldrv_res);
+               of_property_read_u32(node, "vibrdrv_res", &info->vibrdrv_res);
+               of_property_read_u32(node, "viblmotor_res",
+                                    &info->viblmotor_res);
+               of_property_read_u32(node, "vibrmotor_res",
+                                    &info->vibrmotor_res);
+               of_property_read_u32(node, "vddvibl_uV", &vddvibl_uV);
+               of_property_read_u32(node, "vddvibr_uV", &vddvibr_uV);
+       }
+
        if ((!info->vibldrv_res && !info->viblmotor_res) ||
            (!info->vibrdrv_res && !info->vibrmotor_res)) {
                dev_err(info->dev, "invalid vibra driver/motor resistance\n");
@@ -339,10 +358,9 @@ static int __devinit twl6040_vibra_probe(struct platform_device *pdev)
                goto err_regulator;
        }
 
-       if (pdata->vddvibl_uV) {
+       if (vddvibl_uV) {
                ret = regulator_set_voltage(info->supplies[0].consumer,
-                                           pdata->vddvibl_uV,
-                                           pdata->vddvibl_uV);
+                                           vddvibl_uV, vddvibl_uV);
                if (ret) {
                        dev_err(info->dev, "failed to set VDDVIBL volt %d\n",
                                ret);
@@ -350,10 +368,9 @@ static int __devinit twl6040_vibra_probe(struct platform_device *pdev)
                }
        }
 
-       if (pdata->vddvibr_uV) {
+       if (vddvibr_uV) {
                ret = regulator_set_voltage(info->supplies[1].consumer,
-                                           pdata->vddvibr_uV,
-                                           pdata->vddvibr_uV);
+                                           vddvibr_uV, vddvibr_uV);
                if (ret) {
                        dev_err(info->dev, "failed to set VDDVIBR volt %d\n",
                                ret);
@@ -401,6 +418,12 @@ static int __devexit twl6040_vibra_remove(struct platform_device *pdev)
        return 0;
 }
 
+static const struct of_device_id twl6040_vibra_of_match[] = {
+       {.compatible = "ti,twl6040-vibra", },
+       { },
+};
+MODULE_DEVICE_TABLE(of, twl6040_vibra_of_match);
+
 static struct platform_driver twl6040_vibra_driver = {
        .probe          = twl6040_vibra_probe,
        .remove         = __devexit_p(twl6040_vibra_remove),
@@ -408,6 +431,7 @@ static struct platform_driver twl6040_vibra_driver = {
                .name   = "twl6040-vibra",
                .owner  = THIS_MODULE,
                .pm     = &twl6040_vibra_pm_ops,
+               .of_match_table = twl6040_vibra_of_match,
        },
 };
 module_platform_driver(twl6040_vibra_driver);