From 83a4c42df75e8f6ff671fa9fbe7d4c79b98626de Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Sat, 31 Aug 2024 16:20:35 +0200 Subject: [PATCH] power: supply: ucs1002: Adjust ucs1002_set_usb_type() to accept string values power_supply_sysfs.c accept wrrites of strings to "usb_type" for strings values matching an entry in POWER_SUPPLY_USB_TYPE_TEXT[]. If such a string value is written then the int value passed to ucs1002_set_property() will be an enum power_supply_usb_type value. Before this change ucs1002_set_usb_type() expected the value to be an index into ucs1002_usb_types[]. Adjust ucs1002_set_usb_type() to use the enum value directly so that writing string values works. The list of supported types in ucs1002_usb_types[] is: PD, SDP, DCP, CDP. The [POWER_SUPPLY_USB_TYPE_]SDP, DCP and CDP enum labels have a value of 1, 2 and 3. So userspace selecting SDP, DCP or CDP by writing 1, 2 or 3 will keep working. POWER_SUPPLY_USB_TYPE_PD which is mapped to the ucs1002 dedicated mode however has a value of 6. Before this change writing 0 would select the dedicated mode. To preserve userspace API compatibility also map POWER_SUPPLY_USB_TYPE_UNKNOWN (which is 0) to the dedicated mode. Cc: Enric Balletbo Serra Cc: Andrey Smirnov Signed-off-by: Hans de Goede Link: https://lore.kernel.org/r/20240831142039.28830-3-hdegoede@redhat.com Signed-off-by: Sebastian Reichel --- drivers/power/supply/ucs1002_power.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/power/supply/ucs1002_power.c b/drivers/power/supply/ucs1002_power.c index 7970843a4f480..b67d5b03d93e5 100644 --- a/drivers/power/supply/ucs1002_power.c +++ b/drivers/power/supply/ucs1002_power.c @@ -308,10 +308,13 @@ static int ucs1002_set_usb_type(struct ucs1002_info *info, int val) { unsigned int mode; - if (val < 0 || val >= ARRAY_SIZE(ucs1002_usb_types)) - return -EINVAL; - - switch (ucs1002_usb_types[val]) { + switch (val) { + /* + * POWER_SUPPLY_USB_TYPE_UNKNOWN == 0, map this to dedicated for + * userspace API compatibility with older versions of this driver + * which mapped 0 to dedicated. + */ + case POWER_SUPPLY_USB_TYPE_UNKNOWN: case POWER_SUPPLY_USB_TYPE_PD: mode = V_SET_ACTIVE_MODE_DEDICATED; break; -- 2.50.1