The patch titled Subject: rtc-pcf8523: add low battery voltage support has been removed from the -mm tree. Its filename was rtc-pcf8523-add-low-battery-voltage-support.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Jesper Nilsson <jesper.nilsson@xxxxxxxx> Subject: rtc-pcf8523: add low battery voltage support Implement reading of the battery voltage low signal for rtc-pcf8523. The bit is read-only and cannot be cleared by software, so no clear function is implemented. [akpm@xxxxxxxxxxxxxxxxxxxx: omit pcf8563_rtc_ioctl() if CONFIG_RTC_INTF_DEV=n] Signed-off-by: Jesper Nilsson <jesper.nilsson@xxxxxxxx> Reviewed-by: Thierry Reding <thierry.reding@xxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/rtc/rtc-pcf8523.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff -puN drivers/rtc/rtc-pcf8523.c~rtc-pcf8523-add-low-battery-voltage-support drivers/rtc/rtc-pcf8523.c --- a/drivers/rtc/rtc-pcf8523.c~rtc-pcf8523-add-low-battery-voltage-support +++ a/drivers/rtc/rtc-pcf8523.c @@ -23,6 +23,7 @@ #define REG_CONTROL3_PM_VDD (1 << 6) /* switch-over disabled */ #define REG_CONTROL3_PM_DSM (1 << 5) /* direct switching mode */ #define REG_CONTROL3_PM_MASK 0xe0 +#define REG_CONTROL3_BLF (1 << 2) /* battery low bit, read-only */ #define REG_SECONDS 0x03 #define REG_SECONDS_OS (1 << 7) @@ -250,9 +251,39 @@ static int pcf8523_rtc_set_time(struct d return pcf8523_start_rtc(client); } +#ifdef CONFIG_RTC_INTF_DEV +static int pcf8523_rtc_ioctl(struct device *dev, unsigned int cmd, + unsigned long arg) +{ + struct i2c_client *client = to_i2c_client(dev); + u8 value; + int ret = 0, err; + + switch (cmd) { + case RTC_VL_READ: + err = pcf8523_read(client, REG_CONTROL3, &value); + if (err < 0) + return err; + + if (value & REG_CONTROL3_BLF) + ret = 1; + + if (copy_to_user((void __user *)arg, &ret, sizeof(int))) + return -EFAULT; + + return 0; + default: + return -ENOIOCTLCMD; + } +} +#else +#define pcf8523_rtc_ioctl NULL +#endif + static const struct rtc_class_ops pcf8523_rtc_ops = { .read_time = pcf8523_rtc_read_time, .set_time = pcf8523_rtc_set_time, + .ioctl = pcf8523_rtc_ioctl, }; static int pcf8523_probe(struct i2c_client *client, _ Patches currently in -mm which might be from jesper.nilsson@xxxxxxxx are origin.patch linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html