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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-06-10 05:30:17 -0300
commitd635711daa98be86d4c7fd01499c34f566b54ccb (patch)
treeaa5cc3760a27c3d57146498cb82fa549547de06c /drivers/hid/i2c-hid/i2c-hid.c
parentc91265cd0efb83778f015b4d4b1129bd2cfd075e (diff)
Linux-libre 4.6.2-gnu
Diffstat (limited to 'drivers/hid/i2c-hid/i2c-hid.c')
-rw-r--r--drivers/hid/i2c-hid/i2c-hid.c44
1 files changed, 32 insertions, 12 deletions
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index bb897497f..2e021ba8f 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -1112,13 +1112,30 @@ static int i2c_hid_suspend(struct device *dev)
struct i2c_client *client = to_i2c_client(dev);
struct i2c_hid *ihid = i2c_get_clientdata(client);
struct hid_device *hid = ihid->hid;
- int ret = 0;
+ int ret;
int wake_status;
- if (hid->driver && hid->driver->suspend)
+ if (hid->driver && hid->driver->suspend) {
+ /*
+ * Wake up the device so that IO issues in
+ * HID driver's suspend code can succeed.
+ */
+ ret = pm_runtime_resume(dev);
+ if (ret < 0)
+ return ret;
+
ret = hid->driver->suspend(hid, PMSG_SUSPEND);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (!pm_runtime_suspended(dev)) {
+ /* Save some power */
+ i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
+
+ disable_irq(ihid->irq);
+ }
- disable_irq(ihid->irq);
if (device_may_wakeup(&client->dev)) {
wake_status = enable_irq_wake(ihid->irq);
if (!wake_status)
@@ -1128,10 +1145,7 @@ static int i2c_hid_suspend(struct device *dev)
wake_status);
}
- /* Save some power */
- i2c_hid_set_power(client, I2C_HID_PWR_SLEEP);
-
- return ret;
+ return 0;
}
static int i2c_hid_resume(struct device *dev)
@@ -1142,11 +1156,6 @@ static int i2c_hid_resume(struct device *dev)
struct hid_device *hid = ihid->hid;
int wake_status;
- enable_irq(ihid->irq);
- ret = i2c_hid_hwreset(client);
- if (ret)
- return ret;
-
if (device_may_wakeup(&client->dev) && ihid->irq_wake_enabled) {
wake_status = disable_irq_wake(ihid->irq);
if (!wake_status)
@@ -1156,6 +1165,16 @@ static int i2c_hid_resume(struct device *dev)
wake_status);
}
+ /* We'll resume to full power */
+ pm_runtime_disable(dev);
+ pm_runtime_set_active(dev);
+ pm_runtime_enable(dev);
+
+ enable_irq(ihid->irq);
+ ret = i2c_hid_hwreset(client);
+ if (ret)
+ return ret;
+
if (hid->driver && hid->driver->reset_resume) {
ret = hid->driver->reset_resume(hid);
return ret;
@@ -1195,6 +1214,7 @@ static const struct dev_pm_ops i2c_hid_pm = {
static const struct i2c_device_id i2c_hid_id_table[] = {
{ "hid", 0 },
+ { "hid-over-i2c", 0 },
{ },
};
MODULE_DEVICE_TABLE(i2c, i2c_hid_id_table);