mfd: palmas: Provide irq flags through DT/platform data

[deliverable/linux.git] / drivers / mfd / palmas.c

diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c
index bbdbc50a3ccadb7ec98d5d6cd6176c36b9d85a50..73bf76df1044cc70b04bc383d2ad7ec9384a7fcc 100644 (file)
--- a/drivers/mfd/palmas.c
+++ b/drivers/mfd/palmas.c
@@ -257,9 +257,24 @@ static struct regmap_irq_chip palmas_irq_chip = {
                        PALMAS_INT1_MASK),
 };
 
-static void palmas_dt_to_pdata(struct device_node *node,
+static int palmas_set_pdata_irq_flag(struct i2c_client *i2c,
                struct palmas_platform_data *pdata)
 {
+       struct irq_data *irq_data = irq_get_irq_data(i2c->irq);
+       if (!irq_data) {
+               dev_err(&i2c->dev, "Invalid IRQ: %d\n", i2c->irq);
+               return -EINVAL;
+       }
+
+       pdata->irq_flags = irqd_get_trigger_type(irq_data);
+       dev_info(&i2c->dev, "Irq flag is 0x%08x\n", pdata->irq_flags);
+       return 0;
+}
+
+static void palmas_dt_to_pdata(struct i2c_client *i2c,
+               struct palmas_platform_data *pdata)
+{
+       struct device_node *node = i2c->dev.of_node;
        int ret;
        u32 prop;
 
@@ -283,6 +298,8 @@ static void palmas_dt_to_pdata(struct device_node *node,
                pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK |
                                        PALMAS_POWER_CTRL_ENABLE1_MASK |
                                        PALMAS_POWER_CTRL_ENABLE2_MASK;
+       if (i2c->irq)
+               palmas_set_pdata_irq_flag(i2c, pdata);
 }
 
 static int palmas_i2c_probe(struct i2c_client *i2c,
@@ -304,7 +321,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
                if (!pdata)
                        return -ENOMEM;
 
-               palmas_dt_to_pdata(node, pdata);
+               palmas_dt_to_pdata(i2c, pdata);
        }
 
        if (!pdata)
@@ -344,6 +361,19 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
                }
        }
 
+       /* Change interrupt line output polarity */
+       if (pdata->irq_flags & IRQ_TYPE_LEVEL_HIGH)
+               reg = PALMAS_POLARITY_CTRL_INT_POLARITY;
+       else
+               reg = 0;
+       ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
+                       PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY,
+                       reg);
+       if (ret < 0) {
+               dev_err(palmas->dev, "POLARITY_CTRL updat failed: %d\n", ret);
+               goto err;
+       }
+
        /* Change IRQ into clear on read mode for efficiency */
        slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE);
        addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL);
@@ -352,7 +382,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c,
        regmap_write(palmas->regmap[slave], addr, reg);
 
        ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
-                       IRQF_ONESHOT | IRQF_TRIGGER_LOW, 0, &palmas_irq_chip,
+                       IRQF_ONESHOT | pdata->irq_flags, 0, &palmas_irq_chip,
                        &palmas->irq_data);
        if (ret < 0)
                goto err;