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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2021 Severin von Wnuck-Lipinski <severinvonw@outlook.de>
*/
#include <linux/sysfs.h>
#include "common.h"
#define GIP_LED_BRIGHTNESS_DEFAULT 20
#define GIP_LED_BRIGHTNESS_MAX 50
static enum power_supply_property gip_battery_props[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_SCOPE,
POWER_SUPPLY_PROP_MODEL_NAME,
};
static int gip_get_battery_prop(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct gip_battery *batt = power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = batt->status;
break;
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
val->intval = batt->capacity;
break;
case POWER_SUPPLY_PROP_SCOPE:
val->intval = POWER_SUPPLY_SCOPE_DEVICE;
break;
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = batt->name;
break;
default:
return -EINVAL;
}
return 0;
}
int gip_init_battery(struct gip_battery *batt, struct gip_client *client,
const char *name)
{
struct power_supply_config cfg = {};
batt->name = name;
batt->status = POWER_SUPPLY_STATUS_UNKNOWN;
batt->capacity = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
batt->desc.name = dev_name(&client->dev);
batt->desc.type = POWER_SUPPLY_TYPE_BATTERY;
batt->desc.properties = gip_battery_props;
batt->desc.num_properties = ARRAY_SIZE(gip_battery_props);
batt->desc.get_property = gip_get_battery_prop;
cfg.drv_data = batt;
batt->supply = devm_power_supply_register(&client->dev, &batt->desc,
&cfg);
if (IS_ERR(batt->supply)) {
dev_err(&client->dev, "%s: register failed: %ld\n",
__func__, PTR_ERR(batt->supply));
return PTR_ERR(batt->supply);
}
power_supply_powers(batt->supply, &client->dev);
return 0;
}
EXPORT_SYMBOL_GPL(gip_init_battery);
void gip_report_battery(struct gip_battery *batt,
enum gip_battery_type type,
enum gip_battery_level level)
{
if (type == GIP_BATT_TYPE_NONE)
batt->status = POWER_SUPPLY_STATUS_NOT_CHARGING;
else
batt->status = POWER_SUPPLY_STATUS_DISCHARGING;
if (type == GIP_BATT_TYPE_NONE)
batt->capacity = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
else if (level == GIP_BATT_LEVEL_LOW)
batt->capacity = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
else if (level == GIP_BATT_LEVEL_NORMAL)
batt->capacity = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
else if (level == GIP_BATT_LEVEL_HIGH)
batt->capacity = POWER_SUPPLY_CAPACITY_LEVEL_HIGH;
else if (level == GIP_BATT_LEVEL_FULL)
batt->capacity = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
if (batt->supply)
power_supply_changed(batt->supply);
}
EXPORT_SYMBOL_GPL(gip_report_battery);
static void gip_led_brightness_set(struct led_classdev *dev,
enum led_brightness brightness)
{
struct gip_led *led = container_of(dev, typeof(*led), dev);
int err;
if (dev->flags & LED_UNREGISTERING)
return;
dev_dbg(&led->client->dev, "%s: brightness=%d\n", __func__, brightness);
err = gip_set_led_mode(led->client, led->mode, brightness);
if (err)
dev_err(&led->client->dev, "%s: set LED mode failed: %d\n",
__func__, err);
}
static ssize_t gip_led_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct led_classdev *cdev = dev_get_drvdata(dev);
struct gip_led *led = container_of(cdev, typeof(*led), dev);
return sysfs_emit(buf, "%u\n", led->mode);
}
static ssize_t gip_led_mode_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct led_classdev *cdev = dev_get_drvdata(dev);
struct gip_led *led = container_of(cdev, typeof(*led), dev);
u8 mode;
int err;
err = kstrtou8(buf, 10, &mode);
if (err)
return err;
dev_dbg(&led->client->dev, "%s: mode=%u\n", __func__, mode);
led->mode = mode;
err = gip_set_led_mode(led->client, mode, cdev->brightness);
if (err) {
dev_err(&led->client->dev, "%s: set LED mode failed: %d\n",
__func__, err);
return err;
}
return count;
}
static struct device_attribute gip_led_attr_mode =
__ATTR(mode, 0644, gip_led_mode_show, gip_led_mode_store);
static struct attribute *gip_led_attrs[] = {
&gip_led_attr_mode.attr,
NULL,
};
ATTRIBUTE_GROUPS(gip_led);
int gip_init_led(struct gip_led *led, struct gip_client *client)
{
int err;
/* set default brightness */
err = gip_set_led_mode(client, GIP_LED_ON, GIP_LED_BRIGHTNESS_DEFAULT);
if (err) {
dev_err(&client->dev, "%s: set brightness failed: %d\n",
__func__, err);
return err;
}
led->dev.name = devm_kasprintf(&client->dev, GFP_KERNEL,
"%s:white:status",
dev_name(&client->dev));
if (!led->dev.name)
return -ENOMEM;
led->dev.brightness = GIP_LED_BRIGHTNESS_DEFAULT;
led->dev.max_brightness = GIP_LED_BRIGHTNESS_MAX;
led->dev.brightness_set = gip_led_brightness_set;
led->dev.groups = gip_led_groups;
led->client = client;
led->mode = GIP_LED_ON;
err = devm_led_classdev_register(&client->dev, &led->dev);
if (err)
dev_err(&client->dev, "%s: register failed: %d\n",
__func__, err);
return err;
}
EXPORT_SYMBOL_GPL(gip_init_led);
int gip_init_input(struct gip_input *input, struct gip_client *client,
const char *name)
{
input->dev = devm_input_allocate_device(&client->dev);
if (!input->dev)
return -ENOMEM;
input->dev->phys = devm_kasprintf(&client->dev, GFP_KERNEL,
"%s/input0", dev_name(&client->dev));
if (!input->dev->phys)
return -ENOMEM;
gip_send_get_serial_number(client);
input->dev->name = name;
input->dev->id.bustype = BUS_VIRTUAL;
input->dev->id.vendor = client->hardware.vendor;
input->dev->id.product = client->hardware.product;
input->dev->id.version = client->hardware.version;
input->dev->dev.parent = &client->dev;
input->dev->uniq = client->serial.data;
return 0;
}
EXPORT_SYMBOL_GPL(gip_init_input);
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