This patch series adds regulator-haptic driver.
The regulator-haptic has haptic motor and it is controlled by
voltage of regulator via force feedback framework.
Changes in v2:
- remove driver owner
- merge enable/disable function
- support platform data
- fix wrong suspends_state check in regulator_haptic_resume()
Jaewon Kim (2):
Input: add regulator haptic driver
ARM: dts: Add regulator-haptic device node for exynos3250-rinato
.../devicetree/bindings/input/regulator-haptic.txt | 24 ++
arch/arm/boot/dts/exynos3250-rinato.dts | 7 +
drivers/input/misc/Kconfig | 11 +
drivers/input/misc/Makefile | 1 +
drivers/input/misc/regulator-haptic.c | 247 ++++++++++++++++++++
include/linux/input/regulator-haptic.h | 30 +++
6 files changed, 320 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/regulator-haptic.txt
create mode 100644 drivers/input/misc/regulator-haptic.c
create mode 100644 include/linux/input/regulator-haptic.h
--
1.7.9.5
This patch adds support for haptic driver controlled by
voltage of regulator. And this driver support for
Force Feedback interface from input framework
Signed-off-by: Jaewon Kim <[email protected]>
Signed-off-by: Hyunhee Kim <[email protected]>
Acked-by: Kyungmin Park <[email protected]>
---
.../devicetree/bindings/input/regulator-haptic.txt | 24 ++
drivers/input/misc/Kconfig | 11 +
drivers/input/misc/Makefile | 1 +
drivers/input/misc/regulator-haptic.c | 247 ++++++++++++++++++++
include/linux/input/regulator-haptic.h | 30 +++
5 files changed, 313 insertions(+)
create mode 100644 Documentation/devicetree/bindings/input/regulator-haptic.txt
create mode 100644 drivers/input/misc/regulator-haptic.c
create mode 100644 include/linux/input/regulator-haptic.h
diff --git a/Documentation/devicetree/bindings/input/regulator-haptic.txt b/Documentation/devicetree/bindings/input/regulator-haptic.txt
new file mode 100644
index 0000000..5a44e8f
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/regulator-haptic.txt
@@ -0,0 +1,24 @@
+* Requlator Haptic Device Tree Bindings
+
+The regulator haptic driver controlled by voltage of regulator.
+This driver implemented via Force Feedback interface.
+
+Required Properties:
+ - compatible : Should be "regulator-haptic"
+ - haptic-supply : Power supply to the haptic motor.
+ [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
+
+ - max-microvolt : The maximum voltage value supplied to the haptic motor.
+ [The unit of the voltage is a micro]
+
+ - min-microvolt : The minimum voltage value supplied to the haptic motor.
+ [The unit of the voltage is a micro]
+
+Example:
+
+ haptics {
+ compatible = "regulator-haptic";
+ haptic-supply = <&motor_regulator>;
+ max-microvolt = <2700000>;
+ min-microvolt = <1100000>;
+ };
diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
index 23297ab..e5e556d 100644
--- a/drivers/input/misc/Kconfig
+++ b/drivers/input/misc/Kconfig
@@ -394,6 +394,17 @@ config INPUT_CM109
To compile this driver as a module, choose M here: the module will be
called cm109.
+config INPUT_REGULATOR_HAPTIC
+ tristate "regulator haptics support"
+ select INPUT_FF_MEMLESS
+ help
+ This option enables device driver support for the haptic controlled
+ by regulator. This driver supports ff-memless interface
+ from input framework.
+
+ To compile this driver as a module, choose M here: the
+ module will be called regulator-haptic.
+
config INPUT_RETU_PWRBUTTON
tristate "Retu Power button Driver"
depends on MFD_RETU
diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
index 19c7603..1f135af 100644
--- a/drivers/input/misc/Makefile
+++ b/drivers/input/misc/Makefile
@@ -53,6 +53,7 @@ obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o
obj-$(CONFIG_INPUT_POWERMATE) += powermate.o
obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o
obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o
+obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o
obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o
obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o
obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
diff --git a/drivers/input/misc/regulator-haptic.c b/drivers/input/misc/regulator-haptic.c
new file mode 100644
index 0000000..c61dd99
--- /dev/null
+++ b/drivers/input/misc/regulator-haptic.c
@@ -0,0 +1,247 @@
+/*
+ * Regulator haptic driver
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * Author: Jaewon Kim <[email protected]>
+ * Author: Hyunhee Kim <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/input.h>
+#include <linux/input/regulator-haptic.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+#define MAX_MAGNITUDE_SHIFT 16
+
+struct regulator_haptic {
+ struct device *dev;
+ struct input_dev *input_dev;
+ struct regulator *regulator;
+ struct work_struct work;
+
+ bool enabled;
+ bool suspend_state;
+ unsigned int max_volt;
+ unsigned int min_volt;
+ unsigned int intensity;
+ unsigned int magnitude;
+};
+
+static void regulator_haptic_enable(struct regulator_haptic *haptic, bool state)
+{
+ int error;
+
+ if (haptic->enabled == state)
+ return;
+
+ if (state)
+ error = regulator_enable(haptic->regulator);
+ else
+ error = regulator_disable(haptic->regulator);
+ if (error) {
+ dev_err(haptic->dev, "cannot enable regulator\n");
+ return;
+ }
+
+ haptic->enabled = state;
+}
+
+static void regulator_haptic_work(struct work_struct *work)
+{
+ struct regulator_haptic *haptic = container_of(work,
+ struct regulator_haptic, work);
+ int error;
+
+ error = regulator_set_voltage(haptic->regulator,
+ haptic->intensity + haptic->min_volt, haptic->max_volt);
+ if (error) {
+ dev_err(haptic->dev, "cannot set regulator voltage\n");
+ return;
+ }
+
+ if (haptic->magnitude)
+ regulator_haptic_enable(haptic, true);
+ else
+ regulator_haptic_enable(haptic, false);
+}
+
+static int regulator_haptic_play_effect(struct input_dev *input, void *data,
+ struct ff_effect *effect)
+{
+ struct regulator_haptic *haptic = input_get_drvdata(input);
+ u64 volt_mag_multi;
+
+ haptic->magnitude = effect->u.rumble.strong_magnitude;
+ if (!haptic->magnitude)
+ haptic->magnitude = effect->u.rumble.weak_magnitude;
+
+
+ volt_mag_multi = (u64)(haptic->max_volt - haptic->min_volt) *
+ haptic->magnitude;
+ haptic->intensity = (unsigned int)(volt_mag_multi >>
+ MAX_MAGNITUDE_SHIFT);
+
+ schedule_work(&haptic->work);
+
+ return 0;
+}
+
+static void regulator_haptic_close(struct input_dev *input)
+{
+ struct regulator_haptic *haptic = input_get_drvdata(input);
+
+ cancel_work_sync(&haptic->work);
+ regulator_haptic_enable(haptic, false);
+}
+
+#ifdef CONFIG_OF
+static int regulator_haptic_parse_dt(struct regulator_haptic *haptic)
+{
+ struct device_node *node = haptic->dev->of_node;
+ int error;
+
+ error = of_property_read_u32(node, "max-microvolt", &haptic->max_volt);
+ if (error) {
+ dev_err(haptic->dev, "cannot parse max-microvolt\n");
+ return error;
+ }
+
+ error = of_property_read_u32(node, "min-microvolt", &haptic->min_volt);
+ if (error) {
+ dev_err(haptic->dev, "cannot parse min-microvolt\n");
+ return error;
+ }
+
+ return 0;
+}
+#else
+static int regulator_haptic_parse_dt(struct regulator_haptic *haptic)
+{
+ return 0;
+}
+#endif /* CONFIG_OF */
+
+static int regulator_haptic_probe(struct platform_device *pdev)
+{
+ struct regulator_haptic *haptic;
+ struct regulator_haptic_data *data;
+ struct input_dev *input_dev;
+ int error;
+
+ haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL);
+ if (!haptic)
+ return -ENOMEM;
+
+ haptic->dev = &pdev->dev;
+ haptic->enabled = false;
+ haptic->suspend_state = false;
+ INIT_WORK(&haptic->work, regulator_haptic_work);
+
+ if (pdev->dev.of_node) {
+ error = regulator_haptic_parse_dt(haptic);
+ if (error) {
+ dev_err(&pdev->dev, "failed to parse device tree\n");
+ return error;
+ }
+ } else {
+ data = dev_get_platdata(&pdev->dev);
+ if (data) {
+ dev_err(&pdev->dev, "failed to get platdata\n");
+ return -EINVAL;
+ }
+
+ haptic->regulator = data->regulator;
+ haptic->max_volt = data->max_volt;
+ haptic->min_volt = data->min_volt;
+ }
+
+ haptic->regulator = devm_regulator_get(&pdev->dev, "haptic");
+ if (IS_ERR(haptic->regulator)) {
+ dev_err(&pdev->dev, "failed to get regulator\n");
+ return PTR_ERR(haptic->regulator);
+ }
+
+ input_dev = devm_input_allocate_device(&pdev->dev);
+ if (!input_dev)
+ return -ENOMEM;
+
+ haptic->input_dev = input_dev;
+ haptic->input_dev->name = "regulator-haptic";
+ haptic->input_dev->dev.parent = &pdev->dev;
+ haptic->input_dev->close = regulator_haptic_close;
+ input_set_drvdata(haptic->input_dev, haptic);
+ input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE);
+
+ error = input_ff_create_memless(input_dev, NULL,
+ regulator_haptic_play_effect);
+ if (error) {
+ dev_err(&pdev->dev, "failed to create force-feedback\n");
+ return error;
+ }
+
+ error = input_register_device(haptic->input_dev);
+ if (error) {
+ dev_err(&pdev->dev, "failed to register input device\n");
+ return error;
+ }
+
+ platform_set_drvdata(pdev, haptic);
+
+ return 0;
+}
+
+static int __maybe_unused regulator_haptic_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct regulator_haptic *haptic = platform_get_drvdata(pdev);
+
+ if (haptic->enabled) {
+ regulator_haptic_enable(haptic, false);
+ haptic->suspend_state = true;
+ }
+
+ return 0;
+}
+
+static int __maybe_unused regulator_haptic_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct regulator_haptic *haptic = platform_get_drvdata(pdev);
+
+ if (haptic->suspend_state) {
+ regulator_haptic_enable(haptic, true);
+ haptic->suspend_state = false;
+ }
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(regulator_haptic_pm_ops,
+ regulator_haptic_suspend, regulator_haptic_resume);
+
+static struct of_device_id regulator_haptic_dt_match[] = {
+ { .compatible = "regulator-haptic" },
+ {},
+};
+
+static struct platform_driver regulator_haptic_driver = {
+ .probe = regulator_haptic_probe,
+ .driver = {
+ .name = "regulator-haptic",
+ .of_match_table = regulator_haptic_dt_match,
+ .pm = ®ulator_haptic_pm_ops,
+ },
+};
+module_platform_driver(regulator_haptic_driver);
+
+MODULE_AUTHOR("Jaewon Kim <[email protected]>");
+MODULE_AUTHOR("Hyunhee Kim <[email protected]>");
+MODULE_DESCRIPTION("Regulator haptic driver");
+MODULE_LICENSE("GPL");
diff --git a/include/linux/input/regulator-haptic.h b/include/linux/input/regulator-haptic.h
new file mode 100644
index 0000000..15a629c
--- /dev/null
+++ b/include/linux/input/regulator-haptic.h
@@ -0,0 +1,30 @@
+/*
+ * Regulator Haptic Platform Data
+ *
+ * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * Author: Jaewon Kim <[email protected]>
+ * Author: Hyunhee Kim <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _REGULATOR_HAPTIC_H
+
+/*
+ * struct regulator_haptic_data - Platform device data
+ *
+ * @regulator: Power supply to the haptic motor
+ * @max_volt: maximum voltage value supplied to the haptic motor.
+ * <The unit of the voltage is a micro>
+ * @min_volt: minimum voltage value supplied to the haptic motor.
+ * <The unit of the voltage is a micro>
+ */
+struct regulator_haptic_data {
+ struct regulator *regulator;
+ unsigned int max_volt;
+ unsigned int min_volt;
+};
+
+#endif /* _REGULATOR_HAPTIC_H */
--
1.7.9.5
This patch adds regulator-haptic device node controlled by regulator.
Signed-off-by: Jaewon Kim <[email protected]>
---
arch/arm/boot/dts/exynos3250-rinato.dts | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
index 84380fa..da03005 100644
--- a/arch/arm/boot/dts/exynos3250-rinato.dts
+++ b/arch/arm/boot/dts/exynos3250-rinato.dts
@@ -104,6 +104,13 @@
};
};
};
+
+ haptics {
+ compatible = "regulator-haptic";
+ haptic-supply = <&motor_reg>;
+ min-microvolt = <1100000>;
+ max-microvolt = <2700000>;
+ };
};
&adc {
--
1.7.9.5
On 11/24/2014 11:50 PM, Jaewon Kim wrote:
> This patch adds regulator-haptic device node controlled by regulator.
>
> Signed-off-by: Jaewon Kim <[email protected]>
> ---
> arch/arm/boot/dts/exynos3250-rinato.dts | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
> index 84380fa..da03005 100644
> --- a/arch/arm/boot/dts/exynos3250-rinato.dts
> +++ b/arch/arm/boot/dts/exynos3250-rinato.dts
> @@ -104,6 +104,13 @@
> };
> };
> };
> +
> + haptics {
> + compatible = "regulator-haptic";
> + haptic-supply = <&motor_reg>;
> + min-microvolt = <1100000>;
> + max-microvolt = <2700000>;
> + };
> };
>
> &adc {
>
Looks good to me.
Reviewed-by: Chanwoo Choi <[email protected]>
Thanks,
Chanwoo Choi
On 11/24/2014 11:50 PM, Jaewon Kim wrote:
> This patch adds support for haptic driver controlled by
> voltage of regulator. And this driver support for
> Force Feedback interface from input framework
>
> Signed-off-by: Jaewon Kim <[email protected]>
> Signed-off-by: Hyunhee Kim <[email protected]>
> Acked-by: Kyungmin Park <[email protected]>
Looks good to me.
I tested this patch on Exynos3250-based Rinato (Samsung Gear2) board.
Tested-by: Chanwoo Choi <[email protected]>
Reviewed-by: Chanwoo Choi <[email protected]>
Thanks,
Chanwoo Choi
> ---
> .../devicetree/bindings/input/regulator-haptic.txt | 24 ++
> drivers/input/misc/Kconfig | 11 +
> drivers/input/misc/Makefile | 1 +
> drivers/input/misc/regulator-haptic.c | 247 ++++++++++++++++++++
> include/linux/input/regulator-haptic.h | 30 +++
> 5 files changed, 313 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/input/regulator-haptic.txt
> create mode 100644 drivers/input/misc/regulator-haptic.c
> create mode 100644 include/linux/input/regulator-haptic.h
>
> diff --git a/Documentation/devicetree/bindings/input/regulator-haptic.txt b/Documentation/devicetree/bindings/input/regulator-haptic.txt
> new file mode 100644
> index 0000000..5a44e8f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/regulator-haptic.txt
> @@ -0,0 +1,24 @@
> +* Requlator Haptic Device Tree Bindings
> +
> +The regulator haptic driver controlled by voltage of regulator.
> +This driver implemented via Force Feedback interface.
> +
> +Required Properties:
> + - compatible : Should be "regulator-haptic"
> + - haptic-supply : Power supply to the haptic motor.
> + [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
> +
> + - max-microvolt : The maximum voltage value supplied to the haptic motor.
> + [The unit of the voltage is a micro]
> +
> + - min-microvolt : The minimum voltage value supplied to the haptic motor.
> + [The unit of the voltage is a micro]
> +
> +Example:
> +
> + haptics {
> + compatible = "regulator-haptic";
> + haptic-supply = <&motor_regulator>;
> + max-microvolt = <2700000>;
> + min-microvolt = <1100000>;
> + };
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index 23297ab..e5e556d 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -394,6 +394,17 @@ config INPUT_CM109
> To compile this driver as a module, choose M here: the module will be
> called cm109.
>
> +config INPUT_REGULATOR_HAPTIC
> + tristate "regulator haptics support"
> + select INPUT_FF_MEMLESS
> + help
> + This option enables device driver support for the haptic controlled
> + by regulator. This driver supports ff-memless interface
> + from input framework.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called regulator-haptic.
> +
> config INPUT_RETU_PWRBUTTON
> tristate "Retu Power button Driver"
> depends on MFD_RETU
> diff --git a/drivers/input/misc/Makefile b/drivers/input/misc/Makefile
> index 19c7603..1f135af 100644
> --- a/drivers/input/misc/Makefile
> +++ b/drivers/input/misc/Makefile
> @@ -53,6 +53,7 @@ obj-$(CONFIG_INPUT_PMIC8XXX_PWRKEY) += pmic8xxx-pwrkey.o
> obj-$(CONFIG_INPUT_POWERMATE) += powermate.o
> obj-$(CONFIG_INPUT_PWM_BEEPER) += pwm-beeper.o
> obj-$(CONFIG_INPUT_RB532_BUTTON) += rb532_button.o
> +obj-$(CONFIG_INPUT_REGULATOR_HAPTIC) += regulator-haptic.o
> obj-$(CONFIG_INPUT_RETU_PWRBUTTON) += retu-pwrbutton.o
> obj-$(CONFIG_INPUT_GPIO_ROTARY_ENCODER) += rotary_encoder.o
> obj-$(CONFIG_INPUT_SGI_BTNS) += sgi_btns.o
> diff --git a/drivers/input/misc/regulator-haptic.c b/drivers/input/misc/regulator-haptic.c
> new file mode 100644
> index 0000000..c61dd99
> --- /dev/null
> +++ b/drivers/input/misc/regulator-haptic.c
> @@ -0,0 +1,247 @@
> +/*
> + * Regulator haptic driver
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
> + * Author: Jaewon Kim <[email protected]>
> + * Author: Hyunhee Kim <[email protected]>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/input.h>
> +#include <linux/input/regulator-haptic.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/regulator/consumer.h>
> +#include <linux/slab.h>
> +
> +#define MAX_MAGNITUDE_SHIFT 16
> +
> +struct regulator_haptic {
> + struct device *dev;
> + struct input_dev *input_dev;
> + struct regulator *regulator;
> + struct work_struct work;
> +
> + bool enabled;
> + bool suspend_state;
> + unsigned int max_volt;
> + unsigned int min_volt;
> + unsigned int intensity;
> + unsigned int magnitude;
> +};
> +
> +static void regulator_haptic_enable(struct regulator_haptic *haptic, bool state)
> +{
> + int error;
> +
> + if (haptic->enabled == state)
> + return;
> +
> + if (state)
> + error = regulator_enable(haptic->regulator);
> + else
> + error = regulator_disable(haptic->regulator);
> + if (error) {
> + dev_err(haptic->dev, "cannot enable regulator\n");
> + return;
> + }
> +
> + haptic->enabled = state;
> +}
> +
> +static void regulator_haptic_work(struct work_struct *work)
> +{
> + struct regulator_haptic *haptic = container_of(work,
> + struct regulator_haptic, work);
> + int error;
> +
> + error = regulator_set_voltage(haptic->regulator,
> + haptic->intensity + haptic->min_volt, haptic->max_volt);
> + if (error) {
> + dev_err(haptic->dev, "cannot set regulator voltage\n");
> + return;
> + }
> +
> + if (haptic->magnitude)
> + regulator_haptic_enable(haptic, true);
> + else
> + regulator_haptic_enable(haptic, false);
> +}
> +
> +static int regulator_haptic_play_effect(struct input_dev *input, void *data,
> + struct ff_effect *effect)
> +{
> + struct regulator_haptic *haptic = input_get_drvdata(input);
> + u64 volt_mag_multi;
> +
> + haptic->magnitude = effect->u.rumble.strong_magnitude;
> + if (!haptic->magnitude)
> + haptic->magnitude = effect->u.rumble.weak_magnitude;
> +
> +
> + volt_mag_multi = (u64)(haptic->max_volt - haptic->min_volt) *
> + haptic->magnitude;
> + haptic->intensity = (unsigned int)(volt_mag_multi >>
> + MAX_MAGNITUDE_SHIFT);
> +
> + schedule_work(&haptic->work);
> +
> + return 0;
> +}
> +
> +static void regulator_haptic_close(struct input_dev *input)
> +{
> + struct regulator_haptic *haptic = input_get_drvdata(input);
> +
> + cancel_work_sync(&haptic->work);
> + regulator_haptic_enable(haptic, false);
> +}
> +
> +#ifdef CONFIG_OF
> +static int regulator_haptic_parse_dt(struct regulator_haptic *haptic)
> +{
> + struct device_node *node = haptic->dev->of_node;
> + int error;
> +
> + error = of_property_read_u32(node, "max-microvolt", &haptic->max_volt);
> + if (error) {
> + dev_err(haptic->dev, "cannot parse max-microvolt\n");
> + return error;
> + }
> +
> + error = of_property_read_u32(node, "min-microvolt", &haptic->min_volt);
> + if (error) {
> + dev_err(haptic->dev, "cannot parse min-microvolt\n");
> + return error;
> + }
> +
> + return 0;
> +}
> +#else
> +static int regulator_haptic_parse_dt(struct regulator_haptic *haptic)
> +{
> + return 0;
> +}
> +#endif /* CONFIG_OF */
> +
> +static int regulator_haptic_probe(struct platform_device *pdev)
> +{
> + struct regulator_haptic *haptic;
> + struct regulator_haptic_data *data;
> + struct input_dev *input_dev;
> + int error;
> +
> + haptic = devm_kzalloc(&pdev->dev, sizeof(*haptic), GFP_KERNEL);
> + if (!haptic)
> + return -ENOMEM;
> +
> + haptic->dev = &pdev->dev;
> + haptic->enabled = false;
> + haptic->suspend_state = false;
> + INIT_WORK(&haptic->work, regulator_haptic_work);
> +
> + if (pdev->dev.of_node) {
> + error = regulator_haptic_parse_dt(haptic);
> + if (error) {
> + dev_err(&pdev->dev, "failed to parse device tree\n");
> + return error;
> + }
> + } else {
> + data = dev_get_platdata(&pdev->dev);
> + if (data) {
> + dev_err(&pdev->dev, "failed to get platdata\n");
> + return -EINVAL;
> + }
> +
> + haptic->regulator = data->regulator;
> + haptic->max_volt = data->max_volt;
> + haptic->min_volt = data->min_volt;
> + }
> +
> + haptic->regulator = devm_regulator_get(&pdev->dev, "haptic");
> + if (IS_ERR(haptic->regulator)) {
> + dev_err(&pdev->dev, "failed to get regulator\n");
> + return PTR_ERR(haptic->regulator);
> + }
> +
> + input_dev = devm_input_allocate_device(&pdev->dev);
> + if (!input_dev)
> + return -ENOMEM;
> +
> + haptic->input_dev = input_dev;
> + haptic->input_dev->name = "regulator-haptic";
> + haptic->input_dev->dev.parent = &pdev->dev;
> + haptic->input_dev->close = regulator_haptic_close;
> + input_set_drvdata(haptic->input_dev, haptic);
> + input_set_capability(haptic->input_dev, EV_FF, FF_RUMBLE);
> +
> + error = input_ff_create_memless(input_dev, NULL,
> + regulator_haptic_play_effect);
> + if (error) {
> + dev_err(&pdev->dev, "failed to create force-feedback\n");
> + return error;
> + }
> +
> + error = input_register_device(haptic->input_dev);
> + if (error) {
> + dev_err(&pdev->dev, "failed to register input device\n");
> + return error;
> + }
> +
> + platform_set_drvdata(pdev, haptic);
> +
> + return 0;
> +}
> +
> +static int __maybe_unused regulator_haptic_suspend(struct device *dev)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct regulator_haptic *haptic = platform_get_drvdata(pdev);
> +
> + if (haptic->enabled) {
> + regulator_haptic_enable(haptic, false);
> + haptic->suspend_state = true;
> + }
> +
> + return 0;
> +}
> +
> +static int __maybe_unused regulator_haptic_resume(struct device *dev)
> +{
> + struct platform_device *pdev = to_platform_device(dev);
> + struct regulator_haptic *haptic = platform_get_drvdata(pdev);
> +
> + if (haptic->suspend_state) {
> + regulator_haptic_enable(haptic, true);
> + haptic->suspend_state = false;
> + }
> +
> + return 0;
> +}
> +
> +static SIMPLE_DEV_PM_OPS(regulator_haptic_pm_ops,
> + regulator_haptic_suspend, regulator_haptic_resume);
> +
> +static struct of_device_id regulator_haptic_dt_match[] = {
> + { .compatible = "regulator-haptic" },
> + {},
> +};
> +
> +static struct platform_driver regulator_haptic_driver = {
> + .probe = regulator_haptic_probe,
> + .driver = {
> + .name = "regulator-haptic",
> + .of_match_table = regulator_haptic_dt_match,
> + .pm = ®ulator_haptic_pm_ops,
> + },
> +};
> +module_platform_driver(regulator_haptic_driver);
> +
> +MODULE_AUTHOR("Jaewon Kim <[email protected]>");
> +MODULE_AUTHOR("Hyunhee Kim <[email protected]>");
> +MODULE_DESCRIPTION("Regulator haptic driver");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/input/regulator-haptic.h b/include/linux/input/regulator-haptic.h
> new file mode 100644
> index 0000000..15a629c
> --- /dev/null
> +++ b/include/linux/input/regulator-haptic.h
> @@ -0,0 +1,30 @@
> +/*
> + * Regulator Haptic Platform Data
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
> + * Author: Jaewon Kim <[email protected]>
> + * Author: Hyunhee Kim <[email protected]>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#ifndef _REGULATOR_HAPTIC_H
> +
> +/*
> + * struct regulator_haptic_data - Platform device data
> + *
> + * @regulator: Power supply to the haptic motor
> + * @max_volt: maximum voltage value supplied to the haptic motor.
> + * <The unit of the voltage is a micro>
> + * @min_volt: minimum voltage value supplied to the haptic motor.
> + * <The unit of the voltage is a micro>
> + */
> +struct regulator_haptic_data {
> + struct regulator *regulator;
> + unsigned int max_volt;
> + unsigned int min_volt;
> +};
> +
> +#endif /* _REGULATOR_HAPTIC_H */
>
Hi Jaewon,
On Monday 24 November 2014 08:20 PM, Jaewon Kim wrote:
> This patch adds support for haptic driver controlled by
> voltage of regulator. And this driver support for
> Force Feedback interface from input framework
>
> Signed-off-by: Jaewon Kim <[email protected]>
> Signed-off-by: Hyunhee Kim <[email protected]>
> Acked-by: Kyungmin Park <[email protected]>
> ---
> .../devicetree/bindings/input/regulator-haptic.txt | 24 ++
> drivers/input/misc/Kconfig | 11 +
> drivers/input/misc/Makefile | 1 +
> drivers/input/misc/regulator-haptic.c | 247 ++++++++++++++++++++
> include/linux/input/regulator-haptic.h | 30 +++
> 5 files changed, 313 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/input/regulator-haptic.txt
> create mode 100644 drivers/input/misc/regulator-haptic.c
> create mode 100644 include/linux/input/regulator-haptic.h
>
> diff --git a/Documentation/devicetree/bindings/input/regulator-haptic.txt b/Documentation/devicetree/bindings/input/regulator-haptic.txt
> new file mode 100644
> index 0000000..5a44e8f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/regulator-haptic.txt
> @@ -0,0 +1,24 @@
> +* Requlator Haptic Device Tree Bindings
Nit: %s/Requlator/Regulator
> +
> +The regulator haptic driver controlled by voltage of regulator.
> +This driver implemented via Force Feedback interface.
> +
[Snip]
> diff --git a/include/linux/input/regulator-haptic.h b/include/linux/input/regulator-haptic.h
> new file mode 100644
> index 0000000..15a629c
> --- /dev/null
> +++ b/include/linux/input/regulator-haptic.h
> @@ -0,0 +1,30 @@
> +/*
> + * Regulator Haptic Platform Data
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd.
> + * Author: Jaewon Kim <[email protected]>
> + * Author: Hyunhee Kim <[email protected]>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#ifndef _REGULATOR_HAPTIC_H
> +
Please define _REGULATOR_HAPTIC_H here as:
#define _REGULATOR_HAPTIC_H
> +/*
> + * struct regulator_haptic_data - Platform device data
> + *
> + * @regulator: Power supply to the haptic motor
> + * @max_volt: maximum voltage value supplied to the haptic motor.
> + * <The unit of the voltage is a micro>
> + * @min_volt: minimum voltage value supplied to the haptic motor.
> + * <The unit of the voltage is a micro>
> + */
> +struct regulator_haptic_data {
> + struct regulator *regulator;
> + unsigned int max_volt;
> + unsigned int min_volt;
> +};
> +
> +#endif /* _REGULATOR_HAPTIC_H */
>
With these two minor fixes please feel free to add:
Reviewed-by: Pankaj Dubey <[email protected]>
Thanks,
Pankaj Dubey