static int gb_blink_set(struct led_classdev *cdev, unsigned long *delay_on,
unsigned long *delay_off)
{
struct gb_channel *channel = get_channel_from_cdev(cdev);
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
struct gb_lights_blink_request req;
bool old_active;
int ret;
if (channel->releasing)
return -ESHUTDOWN;
mutex_lock(&channel->lock);
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
goto out_unlock;
old_active = channel->active;
req.light_id = channel->light->id;
req.channel_id = channel->id;
req.time_on_ms = cpu_to_le16(*delay_on);
req.time_off_ms = cpu_to_le16(*delay_off);
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_SET_BLINK, &req,
sizeof(req), NULL, 0);
if (ret < 0)
goto out_pm_put;
if (delay_on)
channel->active = true;
else
channel->active = false;
/* we need to keep module alive when turning to active state */
if (!old_active && channel->active)
goto out_unlock;
/*
* on the other hand if going to inactive we still hold a reference and
* need to put it, so we could go to suspend.
*/
if (old_active && !channel->active)
gb_pm_runtime_put_autosuspend(bundle);
out_pm_put:
gb_pm_runtime_put_autosuspend(bundle);
out_unlock:
mutex_unlock(&channel->lock);
return ret;
}
static int gb_lights_flash_fault_get(struct led_classdev_flash *fcdev,
u32 *fault)
{
struct gb_channel *channel = container_of(fcdev, struct gb_channel,
fled);
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
struct gb_lights_get_flash_fault_request req;
struct gb_lights_get_flash_fault_response resp;
int ret;
if (channel->releasing)
return -ESHUTDOWN;
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
return ret;
req.light_id = channel->light->id;
req.channel_id = channel->id;
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_GET_FLASH_FAULT,
&req, sizeof(req), &resp, sizeof(resp));
if (!ret)
*fault = le32_to_cpu(resp.fault);
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
static int gb_lights_flash_timeout_set(struct led_classdev_flash *fcdev,
u32 timeout)
{
struct gb_channel *channel = container_of(fcdev, struct gb_channel,
fled);
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
struct gb_lights_set_flash_timeout_request req;
int ret;
if (channel->releasing)
return -ESHUTDOWN;
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
return ret;
req.light_id = channel->light->id;
req.channel_id = channel->id;
req.timeout_us = cpu_to_le32(timeout);
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_SET_FLASH_TIMEOUT,
&req, sizeof(req), NULL, 0);
if (!ret)
fcdev->timeout.val = timeout;
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
static int gb_lights_flash_strobe_set(struct led_classdev_flash *fcdev,
bool state)
{
struct gb_channel *channel = container_of(fcdev, struct gb_channel,
fled);
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
struct gb_lights_set_flash_strobe_request req;
int ret;
if (channel->releasing)
return -ESHUTDOWN;
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
return ret;
req.light_id = channel->light->id;
req.channel_id = channel->id;
req.state = state ? 1 : 0;
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_SET_FLASH_STROBE,
&req, sizeof(req), NULL, 0);
if (!ret)
channel->strobe_state = state;
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
static int gb_lights_fade_set(struct gb_channel *channel)
{
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
struct gb_lights_set_fade_request req;
int ret;
if (channel->releasing)
return -ESHUTDOWN;
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
return ret;
req.light_id = channel->light->id;
req.channel_id = channel->id;
req.fade_in = channel->fade_in;
req.fade_out = channel->fade_out;
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_SET_FADE,
&req, sizeof(req), NULL, 0);
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
static int __gb_lights_flash_intensity_set(struct gb_channel *channel,
u32 intensity)
{
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
struct gb_lights_set_flash_intensity_request req;
int ret;
if (channel->releasing)
return -ESHUTDOWN;
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
return ret;
req.light_id = channel->light->id;
req.channel_id = channel->id;
req.intensity_uA = cpu_to_le32(intensity);
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_SET_FLASH_INTENSITY,
&req, sizeof(req), NULL, 0);
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
static int __gb_lights_led_brightness_set(struct gb_channel *channel)
{
struct gb_lights_set_brightness_request req;
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
bool old_active;
int ret;
mutex_lock(&channel->lock);
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
goto out_unlock;
old_active = channel->active;
req.light_id = channel->light->id;
req.channel_id = channel->id;
req.brightness = (u8)channel->led->brightness;
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_SET_BRIGHTNESS,
&req, sizeof(req), NULL, 0);
if (ret < 0)
goto out_pm_put;
if (channel->led->brightness)
channel->active = true;
else
channel->active = false;
/* we need to keep module alive when turning to active state */
if (!old_active && channel->active)
goto out_unlock;
/*
* on the other hand if going to inactive we still hold a reference and
* need to put it, so we could go to suspend.
*/
if (old_active && !channel->active)
gb_pm_runtime_put_autosuspend(bundle);
out_pm_put:
gb_pm_runtime_put_autosuspend(bundle);
out_unlock:
mutex_unlock(&channel->lock);
return ret;
}
static int turn_off(struct gb_vibrator_device *vib)
{
struct gb_bundle *bundle = vib->connection->bundle;
int ret;
ret = gb_operation_sync(vib->connection, GB_VIBRATOR_TYPE_OFF,
NULL, 0, NULL, 0);
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
static int turn_on(struct gb_vibrator_device *vib, u16 timeout_ms)
{
struct gb_bundle *bundle = vib->connection->bundle;
int ret;
ret = gb_pm_runtime_get_sync(bundle);
if (ret)
return ret;
/* Vibrator was switched ON earlier */
if (cancel_delayed_work_sync(&vib->delayed_work))
turn_off(vib);
ret = gb_operation_sync(vib->connection, GB_VIBRATOR_TYPE_ON,
NULL, 0, NULL, 0);
if (ret) {
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
schedule_delayed_work(&vib->delayed_work, msecs_to_jiffies(timeout_ms));
return 0;
}
static int gb_lights_color_set(struct gb_channel *channel, u32 color)
{
struct gb_connection *connection = get_conn_from_channel(channel);
struct gb_bundle *bundle = connection->bundle;
struct gb_lights_set_color_request req;
int ret;
if (channel->releasing)
return -ESHUTDOWN;
ret = gb_pm_runtime_get_sync(bundle);
if (ret < 0)
return ret;
req.light_id = channel->light->id;
req.channel_id = channel->id;
req.color = cpu_to_le32(color);
ret = gb_operation_sync(connection, GB_LIGHTS_TYPE_SET_COLOR,
&req, sizeof(req), NULL, 0);
gb_pm_runtime_put_autosuspend(bundle);
return ret;
}
static int gb_vibrator_probe(struct gb_bundle *bundle,
const struct greybus_bundle_id *id)
{
struct greybus_descriptor_cport *cport_desc;
struct gb_connection *connection;
struct gb_vibrator_device *vib;
struct device *dev;
int retval;
if (bundle->num_cports != 1)
return -ENODEV;
cport_desc = &bundle->cport_desc[0];
if (cport_desc->protocol_id != GREYBUS_PROTOCOL_VIBRATOR)
return -ENODEV;
vib = kzalloc(sizeof(*vib), GFP_KERNEL);
if (!vib)
return -ENOMEM;
connection = gb_connection_create(bundle, le16_to_cpu(cport_desc->id),
NULL);
if (IS_ERR(connection)) {
retval = PTR_ERR(connection);
goto err_free_vib;
}
gb_connection_set_data(connection, vib);
vib->connection = connection;
greybus_set_drvdata(bundle, vib);
retval = gb_connection_enable(connection);
if (retval)
goto err_connection_destroy;
/*
* For now we create a device in sysfs for the vibrator, but odds are
* there is a "real" device somewhere in the kernel for this, but I
* can't find it at the moment...
*/
vib->minor = ida_simple_get(&minors, 0, 0, GFP_KERNEL);
if (vib->minor < 0) {
retval = vib->minor;
goto err_connection_disable;
}
dev = device_create(&vibrator_class, &bundle->dev,
MKDEV(0, 0), vib, "vibrator%d", vib->minor);
if (IS_ERR(dev)) {
retval = -EINVAL;
goto err_ida_remove;
}
vib->dev = dev;
INIT_DELAYED_WORK(&vib->delayed_work, gb_vibrator_worker);
gb_pm_runtime_put_autosuspend(bundle);
return 0;
err_ida_remove:
ida_simple_remove(&minors, vib->minor);
err_connection_disable:
gb_connection_disable(connection);
err_connection_destroy:
gb_connection_destroy(connection);
err_free_vib:
kfree(vib);
return retval;
}
static int gb_lights_probe(struct gb_bundle *bundle,
const struct greybus_bundle_id *id)
{
struct greybus_descriptor_cport *cport_desc;
struct gb_connection *connection;
struct gb_lights *glights;
int ret;
if (bundle->num_cports != 1)
return -ENODEV;
cport_desc = &bundle->cport_desc[0];
if (cport_desc->protocol_id != GREYBUS_PROTOCOL_LIGHTS)
return -ENODEV;
glights = kzalloc(sizeof(*glights), GFP_KERNEL);
if (!glights)
return -ENOMEM;
mutex_init(&glights->lights_lock);
connection = gb_connection_create(bundle, le16_to_cpu(cport_desc->id),
gb_lights_request_handler);
if (IS_ERR(connection)) {
ret = PTR_ERR(connection);
goto out;
}
glights->connection = connection;
gb_connection_set_data(connection, glights);
greybus_set_drvdata(bundle, glights);
/* We aren't ready to receive an incoming request yet */
ret = gb_connection_enable_tx(connection);
if (ret)
goto error_connection_destroy;
/*
* Setup all the lights devices over this connection, if anything goes
* wrong tear down all lights
*/
ret = gb_lights_create_all(glights);
if (ret < 0)
goto error_connection_disable;
/* We are ready to receive an incoming request now, enable RX as well */
ret = gb_connection_enable(connection);
if (ret)
goto error_connection_disable;
/* Enable & register lights */
ret = gb_lights_register_all(glights);
if (ret < 0)
goto error_connection_disable;
gb_pm_runtime_put_autosuspend(bundle);
return 0;
error_connection_disable:
gb_connection_disable(connection);
error_connection_destroy:
gb_connection_destroy(connection);
out:
gb_lights_release(glights);
return ret;
}