Add support for using the power button to wake up from suspend.

ok anton@

diff --git a/sys/dev/fdt/axppmic.c b/sys/dev/fdt/axppmic.c
index ed97350..9363038 100644 (file)
--- a/sys/dev/fdt/axppmic.c
+++ b/sys/dev/fdt/axppmic.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: axppmic.c,v 1.14 2022/06/28 23:43:12 naddy Exp $      */
+/*     $OpenBSD: axppmic.c,v 1.15 2022/07/16 11:26:13 kettenis Exp $   */
 /*
  * Copyright (c) 2017 Mark Kettenis <kettenis@openbsd.org>
  *
@@ -36,6 +36,20 @@ extern void (*powerdownfn)(void);
 #define  AXP209_ADC_EN1_ACIN   (3 << 4)
 #define  AXP209_ADC_EN1_VBUS   (3 << 2)
 
+#define AXP803_IRQ1_EN         0x40
+#define AXP803_IRQ2_EN         0x41
+#define AXP803_IRQ3_EN         0x42
+#define AXP803_IRQ4_EN         0x43
+#define AXP803_IRQ5_EN         0x44
+#define  AXP803_IRQ5_EN_PEK_SHORT      (1 << 4)
+#define AXP803_IRQ6_EN         0x45
+#define AXP803_IRQ1_STAT       0x48
+#define AXP803_IRQ2_STAT       0x49
+#define AXP803_IRQ3_STAT       0x4a
+#define AXP803_IRQ4_STAT       0x4b
+#define AXP803_IRQ5_STAT       0x4c
+#define  AXP803_IRQ5_STAT_PEK_SHORT    (1 << 4)
+#define AXP803_IRQ6_STAT       0x4d
 #define AXP803_BAT_CAP_WARN            0xe6
 #define  AXP803_BAT_CAP_WARN_LV1       0xf0
 #define  AXP803_BAT_CAP_WARN_LV1BASE   5
@@ -315,6 +329,7 @@ struct axppmic_softc {
        struct device   sc_dev;
        void            *sc_cookie;
        uint16_t        sc_addr;
+       const char      *sc_name;
 
        uint8_t         (*sc_read)(struct axppmic_softc *, uint8_t);
        void            (*sc_write)(struct axppmic_softc *, uint8_t, uint8_t);
@@ -341,6 +356,7 @@ axppmic_write_reg(struct axppmic_softc *sc, uint8_t reg, uint8_t value)
 }
 
 void   axppmic_attach_common(struct axppmic_softc *, const char *, int);
+int    axppmic_activate(struct device *, int);
 
 /* I2C interface */
 
@@ -348,7 +364,8 @@ int axppmic_i2c_match(struct device *, void *, void *);
 void   axppmic_i2c_attach(struct device *, struct device *, void *);
 
 const struct cfattach axppmic_ca = {
-       sizeof(struct axppmic_softc), axppmic_i2c_match, axppmic_i2c_attach
+       sizeof(struct axppmic_softc), axppmic_i2c_match, axppmic_i2c_attach,
+       NULL, axppmic_activate
 };
 
 struct cfdriver axppmic_cd = {
@@ -424,7 +441,8 @@ int axppmic_rsb_match(struct device *, void *, void *);
 void   axppmic_rsb_attach(struct device *, struct device *, void *);
 
 const struct cfattach axppmic_rsb_ca = {
-       sizeof(struct axppmic_softc), axppmic_rsb_match, axppmic_rsb_attach
+       sizeof(struct axppmic_softc), axppmic_rsb_match, axppmic_rsb_attach,
+       NULL, axppmic_activate
 };
 
 struct cfdriver axppmic_rsb_cd = {
@@ -488,6 +506,7 @@ axppmic_attach_common(struct axppmic_softc *sc, const char *name, int node)
        device = axppmic_lookup(name);
        printf(": %s\n", device->chip);
 
+       sc->sc_name = device->name;
        sc->sc_regdata = device->regdata;
        sc->sc_sensdata = device->sensdata;
 
@@ -534,6 +553,16 @@ axppmic_attach_common(struct axppmic_softc *sc, const char *name, int node)
        if (sc->sc_sensdata)
                axppmic_attach_sensors(sc);
 
+       /* Disable all interrupts on AXP803. */
+       if (strcmp(name, "x-powers,axp803") == 0) {
+               axppmic_write_reg(sc, AXP803_IRQ1_EN, 0);
+               axppmic_write_reg(sc, AXP803_IRQ2_EN, 0);
+               axppmic_write_reg(sc, AXP803_IRQ3_EN, 0);
+               axppmic_write_reg(sc, AXP803_IRQ4_EN, 0);
+               axppmic_write_reg(sc, AXP803_IRQ5_EN, 0);
+               axppmic_write_reg(sc, AXP803_IRQ6_EN, 0);
+       }
+
 #ifdef __armv7__
        if (strcmp(name, "x-powers,axp152") == 0 ||
            strcmp(name, "x-powers,axp209") == 0) {
@@ -556,6 +585,32 @@ axppmic_attach_node(struct axppmic_softc *sc, int node)
                sc->sc_sensdata = axp803_battery_sensdata;
 }
 
+int
+axppmic_activate(struct device *self, int act)
+{
+       struct axppmic_softc *sc = (struct axppmic_softc *)self;
+
+       switch (act) {
+       case DVACT_SUSPEND:
+               if (strcmp(sc->sc_name, "x-powers,axp803") == 0) {
+                       /* Enable interrupt for short power button press. */
+                       axppmic_write_reg(sc, AXP803_IRQ5_STAT,
+                           AXP803_IRQ5_STAT_PEK_SHORT);
+                       axppmic_write_reg(sc, AXP803_IRQ5_EN,
+                           AXP803_IRQ5_EN_PEK_SHORT);
+               }
+               break;
+       case DVACT_RESUME:
+               if (strcmp(sc->sc_name, "x-powers,axp803") == 0) {
+                       /* Disable interrupt for short power button press. */
+                       axppmic_write_reg(sc, AXP803_IRQ5_EN, 0);
+               }
+               break;
+       }
+
+       return 0;
+}
+
 /* Regulators */
 
 struct axppmic_regulator {