rtc: abx80x: Implement RTC_VL_READ,CLR ioctls (ffe1c5a2) · Commits · 戴 / test

drivers/rtc/rtc-abx80x.c

+38 −0

Original line number	Diff line number	Diff line
		@@ -38,6 +38,7 @@

		#define ABX8XX_REG_STATUS 0x0f
		#define ABX8XX_STATUS_AF BIT(2)
		#define ABX8XX_STATUS_BLF BIT(4)
		#define ABX8XX_STATUS_WDT BIT(6)

		#define ABX8XX_REG_CTRL1 0x10
		@@ -507,12 +508,49 @@ static int abx80x_alarm_irq_enable(struct device *dev, unsigned int enabled)
		return err;
		}

		static int abx80x_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
		{
		struct i2c_client *client = to_i2c_client(dev);
		int status, tmp;

		switch (cmd) {
		case RTC_VL_READ:
		status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
		if (status < 0)
		return status;

		tmp = !!(status & ABX8XX_STATUS_BLF);

		if (copy_to_user((void __user *)arg, &tmp, sizeof(int)))
		return -EFAULT;

		return 0;

		case RTC_VL_CLR:
		status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
		if (status < 0)
		return status;

		status &= ~ABX8XX_STATUS_BLF;

		tmp = i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);
		if (tmp < 0)
		return tmp;

		return 0;

		default:
		return -ENOIOCTLCMD;
		}
		}

		static const struct rtc_class_ops abx80x_rtc_ops = {
		.read_time = abx80x_rtc_read_time,
		.set_time = abx80x_rtc_set_time,
		.read_alarm = abx80x_read_alarm,
		.set_alarm = abx80x_set_alarm,
		.alarm_irq_enable = abx80x_alarm_irq_enable,
		.ioctl = abx80x_ioctl,
		};

		static int abx80x_dt_trickle_cfg(struct device_node *np)