diff options
Diffstat (limited to 'drivers/i2c/i2c-core.c')
| -rw-r--r-- | drivers/i2c/i2c-core.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index bf7892e3b0c8..679a31fcb6d6 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -1278,6 +1278,32 @@ static void i2c_dev_set_name(struct i2c_adapter *adap, i2c_encode_flags_to_addr(client)); } +static int i2c_dev_irq_from_resources(const struct resource *resources, + unsigned int num_resources) +{ + struct irq_data *irqd; + int i; + + for (i = 0; i < num_resources; i++) { + const struct resource *r = &resources[i]; + + if (resource_type(r) != IORESOURCE_IRQ) + continue; + + if (r->flags & IORESOURCE_BITS) { + irqd = irq_get_irq_data(r->start); + if (!irqd) + break; + + irqd_set_trigger_type(irqd, r->flags & IORESOURCE_BITS); + } + + return r->start; + } + + return 0; +} + /** * i2c_new_device - instantiate an i2c device * @adap: the adapter managing the device @@ -1313,7 +1339,11 @@ i2c_new_device(struct i2c_adapter *adap, struct i2c_board_info const *info) client->flags = info->flags; client->addr = info->addr; + client->irq = info->irq; + if (!client->irq) + client->irq = i2c_dev_irq_from_resources(info->resources, + info->num_resources); strlcpy(client->name, info->type, sizeof(client->name)); |