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Input: twl4030 - add TWL603x power button

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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>
Link: https://patch.msgid.link/20251106-twl6030-button-v4-2-fdf1aa6e1e9a@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Andreas Kemnade
2025-12-18 21:10:50 -08:00
committed by Dmitry Torokhov
parent b72fbdc080
commit ec8fce2a57
1 changed files with 55 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
drivers/input/misc/twl4030-pwrbutton.c
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@@ -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");
@@ -85,21 +107,49 @@ 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)
return err;
err = twl6030_interrupt_unmask(0x01, REG_INT_MSK_STS_A);
if (err)
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);
#endif
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),