summaryrefslogtreecommitdiffstats
path: root/drivers/i2c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 12:38:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 12:38:20 -0700
commit16a12fa9aed176444fc795b09e796be41902bb08 (patch)
treebd158def3263a8b0d0f0886fd0fcd32728242dc4 /drivers/i2c
parentd25e436c4b68db2895185b24ad1f22499c2f87b0 (diff)
parent0337966d121ebebf73a1c346123e8112796e684e (diff)
downloadlinux-16a12fa9aed176444fc795b09e796be41902bb08.tar.bz2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov: - a big update from Mauro converting input documentation to ReST format - Synaptics PS/2 is now aware of SMBus companion devices, which means that we can now use native RMI4 protocol to handle touchpads, instead of relying on legacy PS/2 mode. - we removed support from BMA180 accelerometer from input devices as it is now handled properly by IIO - update to TSC2007 to corretcly report pressure - other miscellaneous driver fixes. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (152 commits) Input: ar1021_i2c - use BIT to check for a bit Input: twl4030-pwrbutton - use input_set_capability() helper Input: twl4030-pwrbutton - use correct device for irq request Input: ar1021_i2c - enable touch mode during open Input: add uinput documentation dt-bindings: input: add bindings document for ar1021_i2c driver dt-bindings: input: rotary-encoder: fix typo Input: xen-kbdfront - add module parameter for setting resolution ARM: pxa/raumfeld: fix compile error in rotary controller resources Input: xpad - do not suggest writing to Dominic Input: xpad - don't use literal blocks inside footnotes Input: xpad - note that usb/devices is now at /sys/kernel/debug/ Input: docs - freshen up introduction Input: docs - split input docs into kernel- and user-facing Input: docs - note that MT-A protocol is obsolete Input: docs - update joystick documentation a bit Input: docs - remove disclaimer/GPL notice Input: fix "Game console" heading level in joystick documentation Input: rotary-encoder - remove references to platform data from docs Input: move documentation for Amiga CD32 ...
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/i2c-boardinfo.c24
-rw-r--r--drivers/i2c/i2c-core.c34
2 files changed, 56 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 7a065c4260f3..82576aaccc90 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;
@@ -1153,11 +1152,12 @@ 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);
/**
@@ -1334,6 +1334,32 @@ 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
@@ -1369,7 +1395,11 @@ 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));