[v4] mfd: twl603x: add power button

[PATCH v4 2/3] Input: twl4030 - add TWL603x power button

Posted by akemnade@kernel.org 1 month, 1 week ago

From: Andreas Kemnade <andreas@kemnade.info>

Like the TWL4030, these PMICs also have a power button feature, so extend
the TWL4030 power button driver. As the irqchip of the TWL6030 mfd driver
does not provide mask, unmask finctions, do it manually.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
---
 drivers/input/misc/twl4030-pwrbutton.c | 58 +++++++++++++++++++++++++++++++---
 1 file changed, 54 insertions(+), 4 deletions(-)

diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c
index f85cc289c053..8673b1b441bf 100644
--- a/drivers/input/misc/twl4030-pwrbutton.c
+++ b/drivers/input/misc/twl4030-pwrbutton.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <linux/bits.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -30,17 +31,31 @@
 #include <linux/platform_device.h>
 #include <linux/mfd/twl.h>
 
-#define PWR_PWRON_IRQ (1 << 0)
+#define PWR_PWRON_IRQ BIT(0)
 
-#define STS_HW_CONDITIONS 0xf
+struct twl_pwrbutton_chipdata {
+	u8 status_reg;
+	bool need_manual_irq;
+};
+
+static const struct twl_pwrbutton_chipdata twl4030_chipdata = {
+	.status_reg = 0xf,
+	.need_manual_irq = false,
+};
+
+static const struct twl_pwrbutton_chipdata twl6030_chipdata = {
+	.status_reg = 0x2,
+	.need_manual_irq = true,
+};
 
 static irqreturn_t powerbutton_irq(int irq, void *_pwr)
 {
 	struct input_dev *pwr = _pwr;
+	const struct twl_pwrbutton_chipdata *pdata = dev_get_drvdata(pwr->dev.parent);
 	int err;
 	u8 value;
 
-	err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &value, STS_HW_CONDITIONS);
+	err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &value, pdata->status_reg);
 	if (!err)  {
 		pm_wakeup_event(pwr->dev.parent, 0);
 		input_report_key(pwr, KEY_POWER, value & PWR_PWRON_IRQ);
@@ -55,10 +70,17 @@ static irqreturn_t powerbutton_irq(int irq, void *_pwr)
 
 static int twl4030_pwrbutton_probe(struct platform_device *pdev)
 {
+	const struct twl_pwrbutton_chipdata *pdata;
 	struct input_dev *pwr;
 	int irq = platform_get_irq(pdev, 0);
 	int err;
 
+	pdata = device_get_match_data(&pdev->dev);
+	if (!pdata)
+		return -EINVAL;
+
+	platform_set_drvdata(pdev, (void *)pdata);
+
 	pwr = devm_input_allocate_device(&pdev->dev);
 	if (!pwr) {
 		dev_err(&pdev->dev, "Can't allocate power button\n");
@@ -85,14 +107,41 @@ static int twl4030_pwrbutton_probe(struct platform_device *pdev)
 		return err;
 	}
 
+	if (pdata->need_manual_irq) {
+		err = twl6030_interrupt_unmask(0x01, REG_INT_MSK_LINE_A);
+		if (err < 0)
+			return err;
+
+		err = twl6030_interrupt_unmask(0x01, REG_INT_MSK_STS_A);
+		if (err < 0)
+			return err;
+	}
+
 	device_init_wakeup(&pdev->dev, true);
 
 	return 0;
 }
 
+static void twl4030_pwrbutton_remove(struct platform_device *pdev)
+{
+	const struct twl_pwrbutton_chipdata *pdata = platform_get_drvdata(pdev);
+
+	if (pdata->need_manual_irq) {
+		twl6030_interrupt_mask(0x01, REG_INT_MSK_LINE_A);
+		twl6030_interrupt_mask(0x01, REG_INT_MSK_STS_A);
+	}
+}
+
 #ifdef CONFIG_OF
 static const struct of_device_id twl4030_pwrbutton_dt_match_table[] = {
-       { .compatible = "ti,twl4030-pwrbutton" },
+	{
+		.compatible = "ti,twl4030-pwrbutton",
+		.data = &twl4030_chipdata,
+	},
+	{
+		.compatible = "ti,twl6030-pwrbutton",
+		.data = &twl6030_chipdata,
+	},
        {},
 };
 MODULE_DEVICE_TABLE(of, twl4030_pwrbutton_dt_match_table);
@@ -100,6 +149,7 @@ MODULE_DEVICE_TABLE(of, twl4030_pwrbutton_dt_match_table);
 
 static struct platform_driver twl4030_pwrbutton_driver = {
 	.probe		= twl4030_pwrbutton_probe,
+	.remove		= twl4030_pwrbutton_remove,
 	.driver		= {
 		.name	= "twl4030_pwrbutton",
 		.of_match_table = of_match_ptr(twl4030_pwrbutton_dt_match_table),

-- 
2.47.3

Re: [PATCH v4 2/3] Input: twl4030 - add TWL603x power button

Posted by Dmitry Torokhov 8 hours ago

On Thu, Nov 06, 2025 at 10:00:26AM +0100, akemnade@kernel.org wrote:
> From: Andreas Kemnade <andreas@kemnade.info>
> 
> Like the TWL4030, these PMICs also have a power button feature, so extend
> the TWL4030 power button driver. As the irqchip of the TWL6030 mfd driver
> does not provide mask, unmask finctions, do it manually.
> 
> Signed-off-by: Andreas Kemnade <andreas@kemnade.info>

Applied, thank you.

-- 
Dmitry

Re: [PATCH v4 2/3] Input: twl4030 - add TWL603x power button

Posted by Andreas Kemnade 3 weeks, 3 days ago

On Thu, 06 Nov 2025 10:00:26 +0100
akemnade@kernel.org wrote:

> From: Andreas Kemnade <andreas@kemnade.info>
> 
> Like the TWL4030, these PMICs also have a power button feature, so extend
> the TWL4030 power button driver. As the irqchip of the TWL6030 mfd driver
> does not provide mask, unmask finctions, do it manually.
> 
> Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
> ---
a friendly ping
anything still to do here?

Regards,
Andreas
>  drivers/input/misc/twl4030-pwrbutton.c | 58 +++++++++++++++++++++++++++++++---
>  1 file changed, 54 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/input/misc/twl4030-pwrbutton.c b/drivers/input/misc/twl4030-pwrbutton.c
> index f85cc289c053..8673b1b441bf 100644
> --- a/drivers/input/misc/twl4030-pwrbutton.c
> +++ b/drivers/input/misc/twl4030-pwrbutton.c
> @@ -20,6 +20,7 @@
>   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
>   */
>  
> +#include <linux/bits.h>
>  #include <linux/module.h>
>  #include <linux/init.h>
>  #include <linux/kernel.h>
> @@ -30,17 +31,31 @@
>  #include <linux/platform_device.h>
>  #include <linux/mfd/twl.h>
>  
> -#define PWR_PWRON_IRQ (1 << 0)
> +#define PWR_PWRON_IRQ BIT(0)
>  
> -#define STS_HW_CONDITIONS 0xf
> +struct twl_pwrbutton_chipdata {
> +	u8 status_reg;
> +	bool need_manual_irq;
> +};
> +
> +static const struct twl_pwrbutton_chipdata twl4030_chipdata = {
> +	.status_reg = 0xf,
> +	.need_manual_irq = false,
> +};
> +
> +static const struct twl_pwrbutton_chipdata twl6030_chipdata = {
> +	.status_reg = 0x2,
> +	.need_manual_irq = true,
> +};
>  
>  static irqreturn_t powerbutton_irq(int irq, void *_pwr)
>  {
>  	struct input_dev *pwr = _pwr;
> +	const struct twl_pwrbutton_chipdata *pdata = dev_get_drvdata(pwr->dev.parent);
>  	int err;
>  	u8 value;
>  
> -	err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &value, STS_HW_CONDITIONS);
> +	err = twl_i2c_read_u8(TWL_MODULE_PM_MASTER, &value, pdata->status_reg);
>  	if (!err)  {
>  		pm_wakeup_event(pwr->dev.parent, 0);
>  		input_report_key(pwr, KEY_POWER, value & PWR_PWRON_IRQ);
> @@ -55,10 +70,17 @@ static irqreturn_t powerbutton_irq(int irq, void *_pwr)
>  
>  static int twl4030_pwrbutton_probe(struct platform_device *pdev)
>  {
> +	const struct twl_pwrbutton_chipdata *pdata;
>  	struct input_dev *pwr;
>  	int irq = platform_get_irq(pdev, 0);
>  	int err;
>  
> +	pdata = device_get_match_data(&pdev->dev);
> +	if (!pdata)
> +		return -EINVAL;
> +
> +	platform_set_drvdata(pdev, (void *)pdata);
> +
>  	pwr = devm_input_allocate_device(&pdev->dev);
>  	if (!pwr) {
>  		dev_err(&pdev->dev, "Can't allocate power button\n");
> @@ -85,14 +107,41 @@ static int twl4030_pwrbutton_probe(struct platform_device *pdev)
>  		return err;
>  	}
>  
> +	if (pdata->need_manual_irq) {
> +		err = twl6030_interrupt_unmask(0x01, REG_INT_MSK_LINE_A);
> +		if (err < 0)
> +			return err;
> +
> +		err = twl6030_interrupt_unmask(0x01, REG_INT_MSK_STS_A);
> +		if (err < 0)
> +			return err;
> +	}
> +
>  	device_init_wakeup(&pdev->dev, true);
>  
>  	return 0;
>  }
>  
> +static void twl4030_pwrbutton_remove(struct platform_device *pdev)
> +{
> +	const struct twl_pwrbutton_chipdata *pdata = platform_get_drvdata(pdev);
> +
> +	if (pdata->need_manual_irq) {
> +		twl6030_interrupt_mask(0x01, REG_INT_MSK_LINE_A);
> +		twl6030_interrupt_mask(0x01, REG_INT_MSK_STS_A);
> +	}
> +}
> +
>  #ifdef CONFIG_OF
>  static const struct of_device_id twl4030_pwrbutton_dt_match_table[] = {
> -       { .compatible = "ti,twl4030-pwrbutton" },
> +	{
> +		.compatible = "ti,twl4030-pwrbutton",
> +		.data = &twl4030_chipdata,
> +	},
> +	{
> +		.compatible = "ti,twl6030-pwrbutton",
> +		.data = &twl6030_chipdata,
> +	},
>         {},
>  };
>  MODULE_DEVICE_TABLE(of, twl4030_pwrbutton_dt_match_table);
> @@ -100,6 +149,7 @@ MODULE_DEVICE_TABLE(of, twl4030_pwrbutton_dt_match_table);
>  
>  static struct platform_driver twl4030_pwrbutton_driver = {
>  	.probe		= twl4030_pwrbutton_probe,
> +	.remove		= twl4030_pwrbutton_remove,
>  	.driver		= {
>  		.name	= "twl4030_pwrbutton",
>  		.of_match_table = of_match_ptr(twl4030_pwrbutton_dt_match_table),
>

[PATCH v4 1/3] dt-bindings: mfd: twl: enable power button also for twl603x
[PATCH v4 2/3] Input: twl4030 - add TWL603x power button
[PATCH v4 3/3] ARM: dts: ti/omap: omap4-epson-embt2ws: add powerbutton