[PATCH v3 5/5] rtc: s35390a: Add synology quirk
Markus Probst <[email protected]>
| Newsgroups | gmane.linux.kernel.gpio,gmane.linux.ports.arm.kernel,gmane.linux.drivers.devicetree,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
Synology NAS devices use interrupt signal 1 for wakeup alarms. On ACPI it is not possible to configure pinctrl. Use interrupt signal 1 for wakeup if no pinmux function has been configured in devicetree and dmi sys vendor matches "Synology Inc.". Signed-off-by: Markus Probst <[email protected]> --- drivers/rtc/rtc-s35390a.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c index d63bdeff8cdb..2537bd8fe3e8 100644 --- a/drivers/rtc/rtc-s35390a.c +++ b/drivers/rtc/rtc-s35390a.c @@ -5,6 +5,7 @@ * Copyright (c) 2007 Byron Bradley */ +#include <linux/dmi.h> #include <linux/module.h> #include <linux/rtc.h> #include <linux/i2c.h> @@ -771,8 +772,18 @@ static int s35390a_probe(struct i2c_client *client) return dev_err_probe(dev, err, "pinctrl enable failed\n"); /* If no pinmux function is defined in DT, fallback to previous behaviour */ - fallback[0] = S35390A_FUNC_IGNORE; - fallback[1] = S35390A_FUNC_WAKEUP; + + if (dmi_match(DMI_SYS_VENDOR, "Synology Inc.")) { + /* + * Synology uses interrupt signal 1 for wakeup. Since pinctrl cannot be + * configured on ACPI, we check against the dmi sys vendor. + */ + fallback[0] = S35390A_FUNC_WAKEUP; + fallback[1] = S35390A_FUNC_DISABLE; + } else { + fallback[0] = S35390A_FUNC_IGNORE; + fallback[1] = S35390A_FUNC_WAKEUP; + } for (i = 0; i < ARRAY_SIZE(s35390a_pin_groups); i++) { if (s35390a->pinfunction[i] == -1) { -- 2.54.0