@@ -699,6 +699,10 @@ &pinctrl_usdhc2_200mhz {
<MX8MP_IOMUXC_GPIO1_IO04__GPIO1_IO04 0x106>;
};
+&snvs_pwrkey {
+ force-shutdown-time = <0>;
+};
+
&usdhc2 {
/delete-property/ cd-gpios;
/delete-property/ wp-gpios;
@@ -27,7 +27,10 @@
#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 FORCE_SHUTDOWN_TIME 5 /* LPCR 17:16 default */
#define DEBOUNCE_TIME 30
#define REPEAT_INTERVAL 60
@@ -114,6 +117,8 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
struct device_node *np;
struct clk *clk;
int error;
+ int force_shutdown_time;
+ int bpt;
u32 vid;
/* Get SNVS register Page */
@@ -148,11 +153,30 @@ static int imx_snvs_pwrkey_probe(struct platform_device *pdev)
if (pdata->irq < 0)
return -EINVAL;
+ force_shutdown_time = FORCE_SHUTDOWN_TIME;
+ of_property_read_u32(np, "force-shutdown-time", &force_shutdown_time);
+ switch (force_shutdown_time) {
+ case 0:
+ /* Disable long-press detection. */
+ bpt = 0x3;
+ break;
+ case 5:
+ case 10:
+ case 15:
+ bpt = (force_shutdown_time / 5) - 1;
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid force-shutdown-time %d\n", force_shutdown_time);
+ return -EINVAL;
+ }
+
regmap_read(pdata->snvs, SNVS_HPVIDR1_REG, &vid);
pdata->minor_rev = vid & 0xff;
regmap_update_bits(pdata->snvs, SNVS_LPCR_REG, SNVS_LPCR_DEP_EN, SNVS_LPCR_DEP_EN);
+ regmap_update_bits(pdata->snvs, SNVS_LPCR_REG, SNVS_LPCR_BPT_MASK, bpt << SNVS_LPCR_BPT_SHIFT);
+
/* clear the unexpected interrupt before driver ready */
regmap_write(pdata->snvs, SNVS_LPSR_REG, SNVS_LPSR_SPO);
Support configurable shutdown period using a new, optional, device tree property. The force shutdown 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> --- .../arm64/boot/dts/freescale/imx8mp-ppdv2.dts | 4 ++++ drivers/input/keyboard/snvs_pwrkey.c | 24 +++++++++++++++++++ 2 files changed, 28 insertions(+)