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-rw-r--r--drivers/mfd/adp5585.c274
-rw-r--r--include/linux/mfd/adp5585.h40
2 files changed, 312 insertions, 2 deletions
diff --git a/drivers/mfd/adp5585.c b/drivers/mfd/adp5585.c
index ae2448697ef4..30014deee41f 100644
--- a/drivers/mfd/adp5585.c
+++ b/drivers/mfd/adp5585.c
@@ -169,6 +169,9 @@ static const struct adp5585_regs adp5585_regs = {
.int_en = ADP5585_INT_EN,
.gen_cfg = ADP5585_GENERAL_CFG,
.poll_ptime_cfg = ADP5585_POLL_PTIME_CFG,
+ .reset_cfg = ADP5585_RESET_CFG,
+ .reset1_event_a = ADP5585_RESET1_EVENT_A,
+ .reset2_event_a = ADP5585_RESET2_EVENT_A,
};
static const struct adp5585_regs adp5589_regs = {
@@ -176,8 +179,54 @@ static const struct adp5585_regs adp5589_regs = {
.int_en = ADP5589_INT_EN,
.gen_cfg = ADP5589_GENERAL_CFG,
.poll_ptime_cfg = ADP5589_POLL_PTIME_CFG,
+ .reset_cfg = ADP5589_RESET_CFG,
+ .reset1_event_a = ADP5589_RESET1_EVENT_A,
+ .reset2_event_a = ADP5589_RESET2_EVENT_A,
};
+static int adp5585_validate_event(const struct adp5585_dev *adp5585, unsigned int ev)
+{
+ if (adp5585->has_pin6) {
+ if (ev >= ADP5585_ROW5_KEY_EVENT_START && ev <= ADP5585_ROW5_KEY_EVENT_END)
+ return 0;
+ if (ev >= ADP5585_GPI_EVENT_START && ev <= ADP5585_GPI_EVENT_END)
+ return 0;
+
+ return dev_err_probe(adp5585->dev, -EINVAL,
+ "Invalid unlock/reset event(%u) for this device\n", ev);
+ }
+
+ if (ev >= ADP5585_KEY_EVENT_START && ev <= ADP5585_KEY_EVENT_END)
+ return 0;
+ if (ev >= ADP5585_GPI_EVENT_START && ev <= ADP5585_GPI_EVENT_END) {
+ /*
+ * Some variants of the adp5585 do not have the Row 5
+ * (meaning pin 6 or GPIO 6) available. Instead that pin serves
+ * as a reset pin. So, we need to make sure no event is
+ * configured for it.
+ */
+ if (ev == (ADP5585_GPI_EVENT_START + 5))
+ return dev_err_probe(adp5585->dev, -EINVAL,
+ "Invalid unlock/reset event(%u). R5 not available\n",
+ ev);
+ return 0;
+ }
+
+ return dev_err_probe(adp5585->dev, -EINVAL,
+ "Invalid unlock/reset event(%u) for this device\n", ev);
+}
+
+static int adp5589_validate_event(const struct adp5585_dev *adp5585, unsigned int ev)
+{
+ if (ev >= ADP5589_KEY_EVENT_START && ev <= ADP5589_KEY_EVENT_END)
+ return 0;
+ if (ev >= ADP5589_GPI_EVENT_START && ev <= ADP5589_GPI_EVENT_END)
+ return 0;
+
+ return dev_err_probe(adp5585->dev, -EINVAL,
+ "Invalid unlock/reset event(%u) for this device\n", ev);
+}
+
static struct regmap_config *adp5585_fill_variant_config(struct adp5585_dev *adp5585)
{
struct regmap_config *regmap_config;
@@ -190,6 +239,8 @@ static struct regmap_config *adp5585_fill_variant_config(struct adp5585_dev *adp
case ADP5585_04:
adp5585->id = ADP5585_MAN_ID_VALUE;
adp5585->regs = &adp5585_regs;
+ if (adp5585->variant == ADP5585_01)
+ adp5585->has_pin6 = true;
regmap_config = devm_kmemdup(adp5585->dev, &adp5585_regmap_config_template,
sizeof(*regmap_config), GFP_KERNEL);
break;
@@ -198,6 +249,8 @@ static struct regmap_config *adp5585_fill_variant_config(struct adp5585_dev *adp
case ADP5589_02:
adp5585->id = ADP5589_MAN_ID_VALUE;
adp5585->regs = &adp5589_regs;
+ adp5585->has_unlock = true;
+ adp5585->has_pin6 = true;
regmap_config = devm_kmemdup(adp5585->dev, &adp5589_regmap_config_template,
sizeof(*regmap_config), GFP_KERNEL);
break;
@@ -213,6 +266,167 @@ static struct regmap_config *adp5585_fill_variant_config(struct adp5585_dev *adp
return regmap_config;
}
+static int adp5585_parse_ev_array(const struct adp5585_dev *adp5585, const char *prop, u32 *events,
+ u32 *n_events, u32 max_evs, bool reset_ev)
+{
+ struct device *dev = adp5585->dev;
+ unsigned int ev;
+ int ret;
+
+ /*
+ * The device has the capability of handling special events through GPIs or a Keypad:
+ * unlock events: Unlock the keymap until one of the configured events is detected.
+ * reset events: Generate a reset pulse when one of the configured events is detected.
+ */
+ ret = device_property_count_u32(dev, prop);
+ if (ret < 0)
+ return 0;
+
+ *n_events = ret;
+
+ if (!adp5585->has_unlock && !reset_ev)
+ return dev_err_probe(dev, -EOPNOTSUPP, "Unlock keys not supported\n");
+
+ if (*n_events > max_evs)
+ return dev_err_probe(dev, -EINVAL,
+ "Invalid number of keys(%u > %u) for %s\n",
+ *n_events, max_evs, prop);
+
+ ret = device_property_read_u32_array(dev, prop, events, *n_events);
+ if (ret)
+ return ret;
+
+ for (ev = 0; ev < *n_events; ev++) {
+ if (!reset_ev && events[ev] == ADP5589_UNLOCK_WILDCARD)
+ continue;
+
+ if (adp5585->id == ADP5585_MAN_ID_VALUE)
+ ret = adp5585_validate_event(adp5585, events[ev]);
+ else
+ ret = adp5589_validate_event(adp5585, events[ev]);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int adp5585_unlock_ev_parse(struct adp5585_dev *adp5585)
+{
+ struct device *dev = adp5585->dev;
+ int ret;
+
+ ret = adp5585_parse_ev_array(adp5585, "adi,unlock-events", adp5585->unlock_keys,
+ &adp5585->nkeys_unlock, ARRAY_SIZE(adp5585->unlock_keys),
+ false);
+ if (ret)
+ return ret;
+ if (!adp5585->nkeys_unlock)
+ return 0;
+
+ ret = device_property_read_u32(dev, "adi,unlock-trigger-sec", &adp5585->unlock_time);
+ if (!ret) {
+ if (adp5585->unlock_time > ADP5585_MAX_UNLOCK_TIME_SEC)
+ return dev_err_probe(dev, -EINVAL,
+ "Invalid unlock time(%u > %d)\n",
+ adp5585->unlock_time,
+ ADP5585_MAX_UNLOCK_TIME_SEC);
+ }
+
+ return 0;
+}
+
+static int adp5585_reset_ev_parse(struct adp5585_dev *adp5585)
+{
+ struct device *dev = adp5585->dev;
+ u32 prop_val;
+ int ret;
+
+ ret = adp5585_parse_ev_array(adp5585, "adi,reset1-events", adp5585->reset1_keys,
+ &adp5585->nkeys_reset1,
+ ARRAY_SIZE(adp5585->reset1_keys), true);
+ if (ret)
+ return ret;
+
+ ret = adp5585_parse_ev_array(adp5585, "adi,reset2-events",
+ adp5585->reset2_keys,
+ &adp5585->nkeys_reset2,
+ ARRAY_SIZE(adp5585->reset2_keys), true);
+ if (ret)
+ return ret;
+
+ if (!adp5585->nkeys_reset1 && !adp5585->nkeys_reset2)
+ return 0;
+
+ if (adp5585->nkeys_reset1 && device_property_read_bool(dev, "adi,reset1-active-high"))
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET1_POL, 1);
+
+ if (adp5585->nkeys_reset2 && device_property_read_bool(dev, "adi,reset2-active-high"))
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET2_POL, 1);
+
+ if (device_property_read_bool(dev, "adi,rst-passthrough-enable"))
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RST_PASSTHRU_EN, 1);
+
+ ret = device_property_read_u32(dev, "adi,reset-trigger-ms", &prop_val);
+ if (!ret) {
+ switch (prop_val) {
+ case 0:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 0);
+ break;
+ case 1000:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 1);
+ break;
+ case 1500:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 2);
+ break;
+ case 2000:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 3);
+ break;
+ case 2500:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 4);
+ break;
+ case 3000:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 5);
+ break;
+ case 3500:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 6);
+ break;
+ case 4000:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_RESET_TRIG_TIME, 7);
+ break;
+ default:
+ return dev_err_probe(dev, -EINVAL,
+ "Invalid value(%u) for adi,reset-trigger-ms\n",
+ prop_val);
+ }
+ }
+
+ ret = device_property_read_u32(dev, "adi,reset-pulse-width-us", &prop_val);
+ if (!ret) {
+ switch (prop_val) {
+ case 500:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 0);
+ break;
+ case 1000:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 1);
+ break;
+ case 2000:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 2);
+ break;
+ case 10000:
+ adp5585->reset_cfg |= FIELD_PREP(ADP5585_PULSE_WIDTH, 3);
+ break;
+ default:
+ return dev_err_probe(dev, -EINVAL,
+ "Invalid value(%u) for adi,reset-pulse-width-us\n",
+ prop_val);
+ }
+ return ret;
+ }
+
+ return 0;
+}
+
static int adp5585_add_devices(const struct adp5585_dev *adp5585)
{
struct device *dev = adp5585->dev;
@@ -301,9 +515,61 @@ out_irq:
static int adp5585_setup(struct adp5585_dev *adp5585)
{
const struct adp5585_regs *regs = adp5585->regs;
- unsigned int reg_val, i;
+ unsigned int reg_val = 0, i;
int ret;
+ /* Configure the device with reset and unlock events */
+ for (i = 0; i < adp5585->nkeys_unlock; i++) {
+ ret = regmap_write(adp5585->regmap, ADP5589_UNLOCK1 + i,
+ adp5585->unlock_keys[i] | ADP5589_UNLOCK_EV_PRESS);
+ if (ret)
+ return ret;
+ }
+
+ if (adp5585->nkeys_unlock) {
+ ret = regmap_update_bits(adp5585->regmap, ADP5589_UNLOCK_TIMERS,
+ ADP5589_UNLOCK_TIMER, adp5585->unlock_time);
+ if (ret)
+ return ret;
+
+ ret = regmap_set_bits(adp5585->regmap, ADP5589_LOCK_CFG, ADP5589_LOCK_EN);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < adp5585->nkeys_reset1; i++) {
+ ret = regmap_write(adp5585->regmap, regs->reset1_event_a + i,
+ adp5585->reset1_keys[i] | ADP5585_RESET_EV_PRESS);
+ if (ret)
+ return ret;
+ }
+
+ for (i = 0; i < adp5585->nkeys_reset2; i++) {
+ ret = regmap_write(adp5585->regmap, regs->reset2_event_a + i,
+ adp5585->reset2_keys[i] | ADP5585_RESET_EV_PRESS);
+ if (ret)
+ return ret;
+ }
+
+ if (adp5585->nkeys_reset1 || adp5585->nkeys_reset2) {
+ ret = regmap_write(adp5585->regmap, regs->reset_cfg, adp5585->reset_cfg);
+ if (ret)
+ return ret;
+
+ /* If there's a reset1 event, then R4 is used as an output for the reset signal */
+ if (adp5585->nkeys_reset1)
+ reg_val = ADP5585_R4_EXTEND_CFG_RESET1;
+ /* If there's a reset2 event, then C4 is used as an output for the reset signal */
+ if (adp5585->nkeys_reset2)
+ reg_val |= ADP5585_C4_EXTEND_CFG_RESET2;
+
+ ret = regmap_update_bits(adp5585->regmap, regs->ext_cfg,
+ ADP5585_C4_EXTEND_CFG_MASK | ADP5585_R4_EXTEND_CFG_MASK,
+ reg_val);
+ if (ret)
+ return ret;
+ }
+
/* Clear any possible event by reading all the FIFO entries */
for (i = 0; i < ADP5585_EV_MAX; i++) {
ret = regmap_read(adp5585->regmap, ADP5585_FIFO_1 + i, &reg_val);
@@ -344,7 +610,11 @@ static int adp5585_parse_fw(struct adp5585_dev *adp5585)
"Invalid value(%u) for poll-interval\n", prop_val);
}
- return 0;
+ ret = adp5585_unlock_ev_parse(adp5585);
+ if (ret)
+ return ret;
+
+ return adp5585_reset_ev_parse(adp5585);
}
static void adp5585_irq_disable(void *data)
diff --git a/include/linux/mfd/adp5585.h b/include/linux/mfd/adp5585.h
index 43a33a3d3f5a..db483ef9693a 100644
--- a/include/linux/mfd/adp5585.h
+++ b/include/linux/mfd/adp5585.h
@@ -68,6 +68,7 @@
#define ADP5585_GPIO_DIRECTION_A 0x27
#define ADP5585_GPIO_DIRECTION_B 0x28
#define ADP5585_RESET1_EVENT_A 0x29
+#define ADP5585_RESET_EV_PRESS BIT(7)
#define ADP5585_RESET1_EVENT_B 0x2a
#define ADP5585_RESET1_EVENT_C 0x2b
#define ADP5585_RESET2_EVENT_A 0x2c
@@ -118,6 +119,13 @@
#define ADP5585_MAX_REG ADP5585_INT_EN
#define ADP5585_PIN_MAX 11
+#define ADP5585_MAX_UNLOCK_TIME_SEC 7
+#define ADP5585_KEY_EVENT_START 1
+#define ADP5585_KEY_EVENT_END 25
+#define ADP5585_GPI_EVENT_START 37
+#define ADP5585_GPI_EVENT_END 47
+#define ADP5585_ROW5_KEY_EVENT_START 1
+#define ADP5585_ROW5_KEY_EVENT_END 30
/* ADP5589 */
#define ADP5589_MAN_ID_VALUE 0x10
@@ -128,6 +136,20 @@
#define ADP5589_GPO_DATA_OUT_A 0x2a
#define ADP5589_GPO_OUT_MODE_A 0x2d
#define ADP5589_GPIO_DIRECTION_A 0x30
+#define ADP5589_UNLOCK1 0x33
+#define ADP5589_UNLOCK_EV_PRESS BIT(7)
+#define ADP5589_UNLOCK_TIMERS 0x36
+#define ADP5589_UNLOCK_TIMER GENMASK(2, 0)
+#define ADP5589_LOCK_CFG 0x37
+#define ADP5589_LOCK_EN BIT(0)
+#define ADP5589_RESET1_EVENT_A 0x38
+#define ADP5589_RESET2_EVENT_A 0x3B
+#define ADP5589_RESET_CFG 0x3D
+#define ADP5585_RESET2_POL BIT(7)
+#define ADP5585_RESET1_POL BIT(6)
+#define ADP5585_RST_PASSTHRU_EN BIT(5)
+#define ADP5585_RESET_TRIG_TIME GENMASK(4, 2)
+#define ADP5585_PULSE_WIDTH GENMASK(1, 0)
#define ADP5589_PWM_OFFT_LOW 0x3e
#define ADP5589_PWM_ONT_LOW 0x40
#define ADP5589_PWM_CFG 0x42
@@ -138,6 +160,11 @@
#define ADP5589_MAX_REG ADP5589_INT_EN
#define ADP5589_PIN_MAX 19
+#define ADP5589_KEY_EVENT_START 1
+#define ADP5589_KEY_EVENT_END 88
+#define ADP5589_GPI_EVENT_START 97
+#define ADP5589_GPI_EVENT_END 115
+#define ADP5589_UNLOCK_WILDCARD 127
struct regmap;
@@ -158,6 +185,9 @@ struct adp5585_regs {
unsigned int ext_cfg;
unsigned int int_en;
unsigned int poll_ptime_cfg;
+ unsigned int reset_cfg;
+ unsigned int reset1_event_a;
+ unsigned int reset2_event_a;
};
struct adp5585_dev {
@@ -167,8 +197,18 @@ struct adp5585_dev {
struct blocking_notifier_head event_notifier;
enum adp5585_variant variant;
unsigned int id;
+ bool has_unlock;
+ bool has_pin6;
int irq;
unsigned int ev_poll_time;
+ unsigned int unlock_time;
+ unsigned int unlock_keys[2];
+ unsigned int nkeys_unlock;
+ unsigned int reset1_keys[3];
+ unsigned int nkeys_reset1;
+ unsigned int reset2_keys[2];
+ unsigned int nkeys_reset2;
+ u8 reset_cfg;
};
#endif
generated by cgit (git 2.34.1) at 2025-12-30 22:50:34 +0000