From 4379f5bd26d8068d5dcbddfefc566c655dbe4080 Mon Sep 17 00:00:00 2001 From: Andrey Smirnov Date: Sat, 15 Jul 2023 12:58:54 -0700 Subject: [PATCH 08/21] hwmon: steamdeck-hwmon: Add support for max battery level/rate Add support for max battery level/charge rate attributes. Signed-off-by: Andrey Smirnov (cherry picked from commit 50af83e8fd75dc52221edd3fb6fd7a7f70c4d8a4) Signed-off-by: Cristian Ciocaltea --- drivers/hwmon/steamdeck-hwmon.c | 72 ++++++++++++++++++++++++++++++++- 1 file changed, 71 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/steamdeck-hwmon.c b/drivers/hwmon/steamdeck-hwmon.c index fab9e9460bd4..9d0a5471b181 100644 --- a/drivers/hwmon/steamdeck-hwmon.c +++ b/drivers/hwmon/steamdeck-hwmon.c @@ -180,6 +180,76 @@ static const struct hwmon_chip_info steamdeck_hwmon_chip_info = { .info = steamdeck_hwmon_info, }; + +static ssize_t +steamdeck_hwmon_simple_store(struct device *dev, const char *buf, size_t count, + const char *method, + unsigned long upper_limit) +{ + struct steamdeck_hwmon *sd = dev_get_drvdata(dev); + unsigned long value; + + if (kstrtoul(buf, 10, &value) || value >= upper_limit) + return -EINVAL; + + if (ACPI_FAILURE(acpi_execute_simple_method(sd->adev->handle, + (char *)method, value))) + return -EIO; + + return count; +} + +static ssize_t +steamdeck_hwmon_simple_show(struct device *dev, char *buf, + const char *method) +{ + struct steamdeck_hwmon *sd = dev_get_drvdata(dev); + unsigned long value; + + value = steamdeck_hwmon_get(sd, method); + if (value < 0) + return value; + + return sprintf(buf, "%ld\n", value); +} + +#define STEAMDECK_HWMON_ATTR_RW(_name, _set_method, _get_method, \ + _upper_limit) \ + static ssize_t _name##_show(struct device *dev, \ + struct device_attribute *attr, \ + char *buf) \ + { \ + return steamdeck_hwmon_simple_show(dev, buf, \ + _get_method); \ + } \ + static ssize_t _name##_store(struct device *dev, \ + struct device_attribute *attr, \ + const char *buf, size_t count) \ + { \ + return steamdeck_hwmon_simple_store(dev, buf, count, \ + _set_method, \ + _upper_limit); \ + } \ + static DEVICE_ATTR_RW(_name) + +STEAMDECK_HWMON_ATTR_RW(max_battery_charge_level, "FCBL", "SFBL", 101); +STEAMDECK_HWMON_ATTR_RW(max_battery_charge_rate, "CHGR", "GCHR", 101); + +static struct attribute *steamdeck_hwmon_attributes[] = { + &dev_attr_max_battery_charge_level.attr, + &dev_attr_max_battery_charge_rate.attr, + NULL +}; + +static const struct attribute_group steamdeck_hwmon_group = { + .attrs = steamdeck_hwmon_attributes, +}; + +static const struct attribute_group *steamdeck_hwmon_groups[] = { + &steamdeck_hwmon_group, + NULL +}; + static int steamdeck_hwmon_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -195,7 +265,7 @@ static int steamdeck_hwmon_probe(struct platform_device *pdev) "steamdeck_hwmon", sd, &steamdeck_hwmon_chip_info, - NULL); + steamdeck_hwmon_groups); if (IS_ERR(hwmon)) { dev_err(dev, "Failed to register HWMON device"); return PTR_ERR(hwmon); -- 2.45.2