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| author | Hans de Goede <hdegoede@redhat.com> | 2024-08-31 16:20:37 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2024-09-03 23:20:27 +0200 |
| commit | a6456d43e9abebb5d7866e5edae3024188273306 (patch) | |
| tree | dc0b84ca81c310d6532e3a2791fff045123a75c5 /drivers/power | |
| parent | power: supply: rt9467-charger: Remove "usb_type" property write support (diff) | |
| download | linux-a6456d43e9abebb5d7866e5edae3024188273306.tar.xz linux-a6456d43e9abebb5d7866e5edae3024188273306.zip | |
power: supply: sysfs: Add power_supply_show_enum_with_available() helper
Turn power_supply_charge_behaviour_show() into a generic function for
showing enum values with their available (for writing) values shown
and the current value shown surrounded by sqaure-brackets like
the show() output for "usb_type" and "charge_behaviour".
This is a preparation patch for refactoring the "usb_type" property
handling to use a bitmask indicating available usb-types + this new
generic function.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20240831142039.28830-5-hdegoede@redhat.com
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/power_supply_sysfs.c | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c index ff7e423edd57..9f21b0b54caf 100644 --- a/drivers/power/supply/power_supply_sysfs.c +++ b/drivers/power/supply/power_supply_sysfs.c @@ -518,31 +518,28 @@ out: return ret; } -ssize_t power_supply_charge_behaviour_show(struct device *dev, - unsigned int available_behaviours, - enum power_supply_charge_behaviour current_behaviour, - char *buf) +static ssize_t power_supply_show_enum_with_available( + struct device *dev, const char * const labels[], int label_count, + unsigned int available_values, int value, char *buf) { bool match = false, available, active; ssize_t count = 0; int i; - for (i = 0; i < ARRAY_SIZE(POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT); i++) { - available = available_behaviours & BIT(i); - active = i == current_behaviour; + for (i = 0; i < label_count; i++) { + available = available_values & BIT(i); + active = i == value; if (available && active) { - count += sysfs_emit_at(buf, count, "[%s] ", - POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT[i]); + count += sysfs_emit_at(buf, count, "[%s] ", labels[i]); match = true; } else if (available) { - count += sysfs_emit_at(buf, count, "%s ", - POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT[i]); + count += sysfs_emit_at(buf, count, "%s ", labels[i]); } } if (!match) { - dev_warn(dev, "driver reporting unsupported charge behaviour\n"); + dev_warn(dev, "driver reporting unavailable enum value %d\n", value); return -EINVAL; } @@ -551,6 +548,17 @@ ssize_t power_supply_charge_behaviour_show(struct device *dev, return count; } + +ssize_t power_supply_charge_behaviour_show(struct device *dev, + unsigned int available_behaviours, + enum power_supply_charge_behaviour current_behaviour, + char *buf) +{ + return power_supply_show_enum_with_available( + dev, POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT, + ARRAY_SIZE(POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT), + available_behaviours, current_behaviour, buf); +} EXPORT_SYMBOL_GPL(power_supply_charge_behaviour_show); int power_supply_charge_behaviour_parse(unsigned int available_behaviours, const char *buf) |