Input: snvs_pwrkey - support power-off-time-sec

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 <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

Author: iangehc

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 +152,27 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
 	if (pdata->irq < 0)
 		return -EINVAL;
 
+	error = of_property_read_u32(np, "power-off-time-sec", &val);
+	if (!error) {
+		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;