regmap: irq: initialize all irqs to wake disabled

The kerneldoc for irq_set_irq_wake() says:

    Enable/disable power management wakeup mode, which is
    disabled by default.

regmap_irq_set_wake() clears bits to enable wake for an interrupt,
and sets bits to disable wake. Hence, we should set all bits in
wake_buf initially, to mirror the expected disabled state.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c
index 9a6649c82daa..6f8f0c1e550f 100644
--- a/drivers/base/regmap/regmap-irq.c
+++ b/drivers/base/regmap/regmap-irq.c
@@ -322,6 +322,22 @@ int regmap_add_irq_chip(struct regmap *map, int irq, int irq_flags,
                 }
         }
 
+        /* Wake is disabled by default */
+        if (d->wake_buf) {
+                for (i = 0; i < chip->num_regs; i++) {
+                        d->wake_buf[i] = d->mask_buf_def[i];
+                        reg = chip->wake_base +
+                                (i * map->reg_stride * d->irq_reg_stride);
+                        ret = regmap_update_bits(map, reg, d->wake_buf[i],
+                                                 d->wake_buf[i]);
+                        if (ret != 0) {
+                                dev_err(map->dev, "Failed to set masks in 0x%x: %d\n",
+                                        reg, ret);
+                                goto err_alloc;
+                        }
+                }
+        }
+
         if (irq_base)
                 d->domain = irq_domain_add_legacy(map->dev->of_node,
                                                   chip->num_irqs, irq_base, 0,