diff options
Diffstat (limited to 'drivers/input')
| -rw-r--r-- | drivers/input/mouse/cyapa.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index fa4d5010534..63f6646faf5 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -604,6 +604,136 @@ out: return IRQ_HANDLED; } +/* + ************************************************************** + * sysfs interface + ************************************************************** +*/ +#ifdef CONFIG_PM_SLEEP +static ssize_t cyapa_show_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u8 pwr_cmd = cyapa->suspend_power_mode; + u16 sleep_time; + int len; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + pwr_cmd = cyapa->suspend_power_mode; + sleep_time = cyapa->suspend_sleep_time; + + mutex_unlock(&cyapa->state_sync_lock); + + switch (pwr_cmd) { + case PWR_MODE_BTN_ONLY: + len = scnprintf(buf, PAGE_SIZE, "%s\n", BTN_ONLY_MODE_NAME); + break; + + case PWR_MODE_OFF: + len = scnprintf(buf, PAGE_SIZE, "%s\n", OFF_MODE_NAME); + break; + + default: + len = scnprintf(buf, PAGE_SIZE, "%u\n", + cyapa->gen == CYAPA_GEN3 ? + cyapa_pwr_cmd_to_sleep_time(pwr_cmd) : + sleep_time); + break; + } + + return len; +} + +static ssize_t cyapa_update_suspend_scanrate(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct cyapa *cyapa = dev_get_drvdata(dev); + u16 sleep_time; + int error; + + error = mutex_lock_interruptible(&cyapa->state_sync_lock); + if (error) + return error; + + if (sysfs_streq(buf, BTN_ONLY_MODE_NAME)) { + cyapa->suspend_power_mode = PWR_MODE_BTN_ONLY; + } else if (sysfs_streq(buf, OFF_MODE_NAME)) { + cyapa->suspend_power_mode = PWR_MODE_OFF; + } else if (!kstrtou16(buf, 10, &sleep_time)) { + cyapa->suspend_sleep_time = max_t(u16, sleep_time, 1000); + cyapa->suspend_power_mode = + cyapa_sleep_time_to_pwr_cmd(cyapa->suspend_sleep_time); + } else { + count = -EINVAL; + } + + mutex_unlock(&cyapa->state_sync_lock); + + return count; +} + +static DEVICE_ATTR(suspend_scanrate_ms, S_IRUGO|S_IWUSR, + cyapa_show_suspend_scanrate, + cyapa_update_suspend_scanrate); + +static struct attribute *cyapa_power_wakeup_entries[] = { + &dev_attr_suspend_scanrate_ms.attr, + NULL, +}; + +static const struct attribute_group cyapa_power_wakeup_group = { + .name = power_group_name, + .attrs = cyapa_power_wakeup_entries, +}; + +static void cyapa_remove_power_wakeup_group(void *data) +{ + struct cyapa *cyapa = data; + + sysfs_unmerge_group(&cyapa->client->dev.kobj, + &cyapa_power_wakeup_group); +} + +static int cyapa_prepare_wakeup_controls(struct cyapa *cyapa) +{ + struct i2c_client *client = cyapa->client; + struct device *dev = &client->dev; + int error; + + if (device_can_wakeup(dev)) { + error = sysfs_merge_group(&client->dev.kobj, + &cyapa_power_wakeup_group); + if (error) { + dev_err(dev, "failed to add power wakeup group: %d\n", + error); + return error; + } + + error = devm_add_action(dev, + cyapa_remove_power_wakeup_group, cyapa); + if (error) { + cyapa_remove_power_wakeup_group(cyapa); + dev_err(dev, "failed to add power cleanup action: %d\n", + error); + return error; + } + } + + return 0; +} +#else +static inline int cyapa_prepare_wakeup_controls(struct cyapa *cyapa) +{ + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + static int cyapa_probe(struct i2c_client *client, const struct i2c_device_id *dev_id) { @@ -643,6 +773,12 @@ static int cyapa_probe(struct i2c_client *client, return error; } + error = cyapa_prepare_wakeup_controls(cyapa); + if (error) { + dev_err(dev, "failed to prepare wakeup controls: %d\n", error); + return error; + } + error = devm_request_threaded_irq(dev, client->irq, NULL, cyapa_irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, |