diff options
| -rw-r--r-- | drivers/i2c/i2c-boardinfo.c | 24 | ||||
| -rw-r--r-- | drivers/i2c/i2c-core.c | 34 | ||||
| -rw-r--r-- | include/linux/i2c.h | 5 |
3 files changed, 61 insertions, 2 deletions
diff --git a/drivers/i2c/i2c-boardinfo.c b/drivers/i2c/i2c-boardinfo.c index 6e5fac6a5262..31186ead5a40 100644 --- a/drivers/i2c/i2c-boardinfo.c +++ b/drivers/i2c/i2c-boardinfo.c @@ -15,6 +15,7 @@ #include <linux/export.h> #include <linux/i2c.h> #include <linux/kernel.h> +#include <linux/property.h> #include <linux/rwsem.h> #include <linux/slab.h> @@ -55,6 +56,7 @@ EXPORT_SYMBOL_GPL(__i2c_first_dynamic_bus_num); * * The board info passed can safely be __initdata, but be careful of embedded * pointers (for platform_data, functions, etc) since that won't be copied. + * Device properties are deep-copied though. */ int i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsigned len) { @@ -78,6 +80,28 @@ int i2c_register_board_info(int busnum, struct i2c_board_info const *info, unsig devinfo->busnum = busnum; devinfo->board_info = *info; + + if (info->properties) { + devinfo->board_info.properties = + property_entries_dup(info->properties); + if (IS_ERR(devinfo->board_info.properties)) { + status = PTR_ERR(devinfo->board_info.properties); + break; + } + } + + if (info->resources) { + devinfo->board_info.resources = + kmemdup(info->resources, + info->num_resources * + sizeof(*info->resources), + GFP_KERNEL); + if (!devinfo->board_info.resources) { + status = -ENOMEM; + break; + } + } + list_add_tail(&devinfo->list, &__i2c_board_list); } diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index d2402bbf6729..679a31fcb6d6 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -74,7 +74,6 @@ static DEFINE_MUTEX(core_lock); static DEFINE_IDR(i2c_adapter_idr); -static struct device_type i2c_client_type; static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver); static struct static_key i2c_trace_msg = STATIC_KEY_INIT_FALSE; @@ -1097,11 +1096,12 @@ struct bus_type i2c_bus_type = { }; EXPORT_SYMBOL_GPL(i2c_bus_type); -static struct device_type i2c_client_type = { +struct device_type i2c_client_type = { .groups = i2c_dev_groups, .uevent = i2c_device_uevent, .release = i2c_client_dev_release, }; +EXPORT_SYMBOL_GPL(i2c_client_type); /** @@ -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)); diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 6b183521c616..c5bd8b8daf97 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -38,6 +38,7 @@ extern struct bus_type i2c_bus_type; extern struct device_type i2c_adapter_type; +extern struct device_type i2c_client_type; /* --- General options ------------------------------------------------ */ @@ -303,6 +304,8 @@ static inline int i2c_slave_event(struct i2c_client *client, * @of_node: pointer to OpenFirmware device node * @fwnode: device node supplied by the platform firmware * @properties: additional device properties for the device + * @resources: resources associated with the device + * @num_resources: number of resources in the @resources array * @irq: stored in i2c_client.irq * * I2C doesn't actually support hardware probing, although controllers and @@ -325,6 +328,8 @@ struct i2c_board_info { struct device_node *of_node; struct fwnode_handle *fwnode; const struct property_entry *properties; + const struct resource *resources; + unsigned int num_resources; int irq; }; |