diff options
author | David Arcari <darcari@redhat.com> | 2016-10-13 11:30:44 +0200 |
---|---|---|
committer | Jiri Kosina <jkosina@suse.cz> | 2016-10-14 16:02:05 +0200 |
commit | ba18a9314a94f4a54b4d0c5e0f1dc85af28eca35 (patch) | |
tree | 469909306d1540fa660c7c4e44aec0920b11d280 | |
parent | bc75450cc3db3485db1e289fef8c1028ba38296a (diff) | |
download | op-kernel-dev-ba18a9314a94f4a54b4d0c5e0f1dc85af28eca35.zip op-kernel-dev-ba18a9314a94f4a54b4d0c5e0f1dc85af28eca35.tar.gz |
Revert "HID: i2c-hid: Add support for ACPI GPIO interrupts"
This reverts commit a485923efbb8 ("HID: i2c-hid: Add support for ACPI
GPIO interrupts") and commit a7d2bf25a483 ("HID: i2c-hid: Do not fail
probing if gpiolib is not enabled") at the same time.
Since commit c884fbd45214 ("gpio / ACPI: Add support for retrieving
GpioInt resources from a device") i2c_core already set the IRQ by
looking into the ACPI tree and retrieving the gpioInt. So we just
have some boiler-plate here that is not needed anymore.
The only downside effect here is that now we are not exiting early
enough if the irq is set to -EPROBE_DEFER or any other error, but
this is going to be fixed in the following patch.
Signed-off-by: David Arcari <darcari@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
-rw-r--r-- | drivers/hid/i2c-hid/i2c-hid.c | 71 |
1 files changed, 18 insertions, 53 deletions
diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c index b3ec4f2..4cd606c 100644 --- a/drivers/hid/i2c-hid/i2c-hid.c +++ b/drivers/hid/i2c-hid/i2c-hid.c @@ -37,7 +37,6 @@ #include <linux/mutex.h> #include <linux/acpi.h> #include <linux/of.h> -#include <linux/gpio/consumer.h> #include <linux/i2c/i2c-hid.h> @@ -145,8 +144,6 @@ struct i2c_hid { unsigned long flags; /* device flags */ wait_queue_head_t wait; /* For waiting the interrupt */ - struct gpio_desc *desc; - int irq; struct i2c_hid_platform_data pdata; @@ -808,16 +805,16 @@ static int i2c_hid_init_irq(struct i2c_client *client) struct i2c_hid *ihid = i2c_get_clientdata(client); int ret; - dev_dbg(&client->dev, "Requesting IRQ: %d\n", ihid->irq); + dev_dbg(&client->dev, "Requesting IRQ: %d\n", client->irq); - ret = request_threaded_irq(ihid->irq, NULL, i2c_hid_irq, + ret = request_threaded_irq(client->irq, NULL, i2c_hid_irq, IRQF_TRIGGER_LOW | IRQF_ONESHOT, client->name, ihid); if (ret < 0) { dev_warn(&client->dev, "Could not register for %s interrupt, irq = %d," " ret = %d\n", - client->name, ihid->irq, ret); + client->name, client->irq, ret); return ret; } @@ -864,14 +861,6 @@ static int i2c_hid_fetch_hid_descriptor(struct i2c_hid *ihid) } #ifdef CONFIG_ACPI - -/* Default GPIO mapping */ -static const struct acpi_gpio_params i2c_hid_irq_gpio = { 0, 0, true }; -static const struct acpi_gpio_mapping i2c_hid_acpi_gpios[] = { - { "gpios", &i2c_hid_irq_gpio, 1 }, - { }, -}; - static int i2c_hid_acpi_pdata(struct i2c_client *client, struct i2c_hid_platform_data *pdata) { @@ -882,7 +871,6 @@ static int i2c_hid_acpi_pdata(struct i2c_client *client, union acpi_object *obj; struct acpi_device *adev; acpi_handle handle; - int ret; handle = ACPI_HANDLE(&client->dev); if (!handle || acpi_bus_get_device(handle, &adev)) @@ -898,9 +886,7 @@ static int i2c_hid_acpi_pdata(struct i2c_client *client, pdata->hid_descriptor_address = obj->integer.value; ACPI_FREE(obj); - /* GPIOs are optional */ - ret = acpi_dev_add_driver_gpios(adev, i2c_hid_acpi_gpios); - return ret < 0 && ret != -ENXIO ? ret : 0; + return 0; } static const struct acpi_device_id i2c_hid_acpi_match[] = { @@ -964,6 +950,12 @@ static int i2c_hid_probe(struct i2c_client *client, dbg_hid("HID probe called for i2c 0x%02x\n", client->addr); + if (!client->irq) { + dev_err(&client->dev, + "HID over i2c has not been provided an Int IRQ\n"); + return -EINVAL; + } + ihid = kzalloc(sizeof(struct i2c_hid), GFP_KERNEL); if (!ihid) return -ENOMEM; @@ -983,23 +975,6 @@ static int i2c_hid_probe(struct i2c_client *client, ihid->pdata = *platform_data; } - if (client->irq > 0) { - ihid->irq = client->irq; - } else if (ACPI_COMPANION(&client->dev)) { - ihid->desc = gpiod_get(&client->dev, NULL, GPIOD_IN); - if (IS_ERR(ihid->desc)) { - dev_err(&client->dev, "Failed to get GPIO interrupt\n"); - return PTR_ERR(ihid->desc); - } - - ihid->irq = gpiod_to_irq(ihid->desc); - if (ihid->irq < 0) { - gpiod_put(ihid->desc); - dev_err(&client->dev, "Failed to convert GPIO to IRQ\n"); - return ihid->irq; - } - } - i2c_set_clientdata(client, ihid); ihid->client = client; @@ -1064,16 +1039,13 @@ err_mem_free: hid_destroy_device(hid); err_irq: - free_irq(ihid->irq, ihid); + free_irq(client->irq, ihid); err_pm: pm_runtime_put_noidle(&client->dev); pm_runtime_disable(&client->dev); err: - if (ihid->desc) - gpiod_put(ihid->desc); - i2c_hid_free_buffers(ihid); kfree(ihid); return ret; @@ -1092,18 +1064,13 @@ static int i2c_hid_remove(struct i2c_client *client) hid = ihid->hid; hid_destroy_device(hid); - free_irq(ihid->irq, ihid); + free_irq(client->irq, ihid); if (ihid->bufsize) i2c_hid_free_buffers(ihid); - if (ihid->desc) - gpiod_put(ihid->desc); - kfree(ihid); - acpi_dev_remove_driver_gpios(ACPI_COMPANION(&client->dev)); - return 0; } @@ -1142,11 +1109,11 @@ static int i2c_hid_suspend(struct device *dev) /* Save some power */ i2c_hid_set_power(client, I2C_HID_PWR_SLEEP); - disable_irq(ihid->irq); + disable_irq(client->irq); } if (device_may_wakeup(&client->dev)) { - wake_status = enable_irq_wake(ihid->irq); + wake_status = enable_irq_wake(client->irq); if (!wake_status) ihid->irq_wake_enabled = true; else @@ -1166,7 +1133,7 @@ static int i2c_hid_resume(struct device *dev) int wake_status; if (device_may_wakeup(&client->dev) && ihid->irq_wake_enabled) { - wake_status = disable_irq_wake(ihid->irq); + wake_status = disable_irq_wake(client->irq); if (!wake_status) ihid->irq_wake_enabled = false; else @@ -1179,7 +1146,7 @@ static int i2c_hid_resume(struct device *dev) pm_runtime_set_active(dev); pm_runtime_enable(dev); - enable_irq(ihid->irq); + enable_irq(client->irq); ret = i2c_hid_hwreset(client); if (ret) return ret; @@ -1197,19 +1164,17 @@ static int i2c_hid_resume(struct device *dev) static int i2c_hid_runtime_suspend(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); - struct i2c_hid *ihid = i2c_get_clientdata(client); i2c_hid_set_power(client, I2C_HID_PWR_SLEEP); - disable_irq(ihid->irq); + disable_irq(client->irq); return 0; } static int i2c_hid_runtime_resume(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); - struct i2c_hid *ihid = i2c_get_clientdata(client); - enable_irq(ihid->irq); + enable_irq(client->irq); i2c_hid_set_power(client, I2C_HID_PWR_ON); return 0; } |