[PATCH v2 1/1] Input: snvs_pwrkey - support power-off-time-sec

Ian Ray
2025-03-14T09:42:33Z

The power-off time is configured in LPCR[17:16] BTN_PRESS_TIME:

* b00: 5 seconds (SoC default)
* b01: 10 seconds
* b10: 15 seconds
* b11: PMIC is not disabled

Signed-off-by: Ian Ray <ian.ray@gehealthcare.com>
---
drivers/input/keyboard/snvs_pwrkey.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/drivers/input/keyboard/snvs_pwrkey.c b/drivers/input/keyboard/snvs_pwrkey.c
index f7b5f1e25c80..d7372ace694a 100644
--- a/drivers/input/keyboard/snvs_pwrkey.c
+++ b/drivers/input/keyboard/snvs_pwrkey.c
@@ -27,6 +27,8 @@
#define SNVS_HPSR_BTN BIT(6)
#define SNVS_LPSR_SPO BIT(18)
#define SNVS_LPCR_DEP_EN BIT(5)
+#define SNVS_LPCR_BPT_SHIFT 16
+#define SNVS_LPCR_BPT_MASK (3 << SNVS_LPCR_BPT_SHIFT)

#define DEBOUNCE_TIME 30
#define REPEAT_INTERVAL 60
@@ -114,6 +116,8 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
struct device_node *np;
struct clk *clk;
int error;
+ unsigned int val;
+ unsigned int bpt;
u32 vid;

/* Get SNVS register Page */
@@ -148,6 +152,24 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
if (pdata->irq < 0)
return -EINVAL;

+ if (!of_property_read_u32(np, "power-off-time-sec", &val)) {
+ switch (val) {
+ case 0:
+ bpt = 0x3;
+ break;
+ case 5:
+ case 10:
+ case 15:
+ bpt = (val / 5) - 1;
+ break;
+ default:
+ dev_err(&pdev->dev, "power-off-time-sec %d out of range\n", val);
+ return -EINVAL;
+ }
+
+ regmap_update_bits(pdata->snvs, SNVS_LPCR_REG, SNVS_LPCR_BPT_MASK, bpt << SNVS_LPCR_BPT_SHIFT);
+ }
+
regmap_read(pdata->snvs, SNVS_HPVIDR1_REG, &vid);
pdata->minor_rev = vid & 0xff;

--
2.39.5