forked from Minki/linux
ee08774424
Handle the Oscillator Failure ('OF') bit from Oscillator Status register (0x1D). This bit is cleared on set_time function and is read each time the date/time is read, but only in case of XT Oscillator selection. In RC mode, this bit is always set. Signed-off-by: Mylène Josserand <mylene.josserand@free-electrons.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
694 lines
17 KiB
C
694 lines
17 KiB
C
/*
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* A driver for the I2C members of the Abracon AB x8xx RTC family,
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* and compatible: AB 1805 and AB 0805
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*
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* Copyright 2014-2015 Macq S.A.
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*
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* Author: Philippe De Muyter <phdm@macqel.be>
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* Author: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/bcd.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/rtc.h>
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#define ABX8XX_REG_HTH 0x00
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#define ABX8XX_REG_SC 0x01
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#define ABX8XX_REG_MN 0x02
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#define ABX8XX_REG_HR 0x03
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#define ABX8XX_REG_DA 0x04
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#define ABX8XX_REG_MO 0x05
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#define ABX8XX_REG_YR 0x06
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#define ABX8XX_REG_WD 0x07
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#define ABX8XX_REG_AHTH 0x08
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#define ABX8XX_REG_ASC 0x09
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#define ABX8XX_REG_AMN 0x0a
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#define ABX8XX_REG_AHR 0x0b
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#define ABX8XX_REG_ADA 0x0c
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#define ABX8XX_REG_AMO 0x0d
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#define ABX8XX_REG_AWD 0x0e
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#define ABX8XX_REG_STATUS 0x0f
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#define ABX8XX_STATUS_AF BIT(2)
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#define ABX8XX_REG_CTRL1 0x10
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#define ABX8XX_CTRL_WRITE BIT(0)
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#define ABX8XX_CTRL_ARST BIT(2)
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#define ABX8XX_CTRL_12_24 BIT(6)
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#define ABX8XX_REG_IRQ 0x12
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#define ABX8XX_IRQ_AIE BIT(2)
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#define ABX8XX_IRQ_IM_1_4 (0x3 << 5)
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#define ABX8XX_REG_CD_TIMER_CTL 0x18
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#define ABX8XX_REG_OSC 0x1c
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#define ABX8XX_OSC_FOS BIT(3)
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#define ABX8XX_OSC_BOS BIT(4)
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#define ABX8XX_OSC_ACAL_512 BIT(5)
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#define ABX8XX_OSC_ACAL_1024 BIT(6)
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#define ABX8XX_OSC_OSEL BIT(7)
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#define ABX8XX_REG_OSS 0x1d
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#define ABX8XX_OSS_OF BIT(1)
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#define ABX8XX_OSS_OMODE BIT(4)
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#define ABX8XX_REG_CFG_KEY 0x1f
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#define ABX8XX_CFG_KEY_OSC 0xa1
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#define ABX8XX_CFG_KEY_MISC 0x9d
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#define ABX8XX_REG_ID0 0x28
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#define ABX8XX_REG_TRICKLE 0x20
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#define ABX8XX_TRICKLE_CHARGE_ENABLE 0xa0
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#define ABX8XX_TRICKLE_STANDARD_DIODE 0x8
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#define ABX8XX_TRICKLE_SCHOTTKY_DIODE 0x4
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static u8 trickle_resistors[] = {0, 3, 6, 11};
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enum abx80x_chip {AB0801, AB0803, AB0804, AB0805,
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AB1801, AB1803, AB1804, AB1805, ABX80X};
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struct abx80x_cap {
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u16 pn;
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bool has_tc;
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};
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static struct abx80x_cap abx80x_caps[] = {
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[AB0801] = {.pn = 0x0801},
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[AB0803] = {.pn = 0x0803},
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[AB0804] = {.pn = 0x0804, .has_tc = true},
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[AB0805] = {.pn = 0x0805, .has_tc = true},
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[AB1801] = {.pn = 0x1801},
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[AB1803] = {.pn = 0x1803},
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[AB1804] = {.pn = 0x1804, .has_tc = true},
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[AB1805] = {.pn = 0x1805, .has_tc = true},
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[ABX80X] = {.pn = 0}
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};
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static int abx80x_is_rc_mode(struct i2c_client *client)
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{
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int flags = 0;
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flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSS);
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if (flags < 0) {
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dev_err(&client->dev,
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"Failed to read autocalibration attribute\n");
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return flags;
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}
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return (flags & ABX8XX_OSS_OMODE) ? 1 : 0;
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}
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static int abx80x_enable_trickle_charger(struct i2c_client *client,
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u8 trickle_cfg)
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{
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int err;
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/*
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* Write the configuration key register to enable access to the Trickle
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* register
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*/
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err = i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY,
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ABX8XX_CFG_KEY_MISC);
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if (err < 0) {
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dev_err(&client->dev, "Unable to write configuration key\n");
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return -EIO;
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}
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err = i2c_smbus_write_byte_data(client, ABX8XX_REG_TRICKLE,
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ABX8XX_TRICKLE_CHARGE_ENABLE |
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trickle_cfg);
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if (err < 0) {
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dev_err(&client->dev, "Unable to write trickle register\n");
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return -EIO;
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}
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return 0;
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}
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static int abx80x_rtc_read_time(struct device *dev, struct rtc_time *tm)
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{
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struct i2c_client *client = to_i2c_client(dev);
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unsigned char buf[8];
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int err, flags, rc_mode = 0;
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/* Read the Oscillator Failure only in XT mode */
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rc_mode = abx80x_is_rc_mode(client);
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if (rc_mode < 0)
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return rc_mode;
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if (!rc_mode) {
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flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSS);
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if (flags < 0)
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return flags;
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if (flags & ABX8XX_OSS_OF) {
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dev_err(dev, "Oscillator failure, data is invalid.\n");
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return -EINVAL;
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}
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}
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err = i2c_smbus_read_i2c_block_data(client, ABX8XX_REG_HTH,
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sizeof(buf), buf);
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if (err < 0) {
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dev_err(&client->dev, "Unable to read date\n");
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return -EIO;
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}
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tm->tm_sec = bcd2bin(buf[ABX8XX_REG_SC] & 0x7F);
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tm->tm_min = bcd2bin(buf[ABX8XX_REG_MN] & 0x7F);
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tm->tm_hour = bcd2bin(buf[ABX8XX_REG_HR] & 0x3F);
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tm->tm_wday = buf[ABX8XX_REG_WD] & 0x7;
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tm->tm_mday = bcd2bin(buf[ABX8XX_REG_DA] & 0x3F);
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tm->tm_mon = bcd2bin(buf[ABX8XX_REG_MO] & 0x1F) - 1;
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tm->tm_year = bcd2bin(buf[ABX8XX_REG_YR]) + 100;
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err = rtc_valid_tm(tm);
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if (err < 0)
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dev_err(&client->dev, "retrieved date/time is not valid.\n");
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return err;
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}
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static int abx80x_rtc_set_time(struct device *dev, struct rtc_time *tm)
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{
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struct i2c_client *client = to_i2c_client(dev);
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unsigned char buf[8];
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int err, flags;
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if (tm->tm_year < 100)
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return -EINVAL;
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buf[ABX8XX_REG_HTH] = 0;
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buf[ABX8XX_REG_SC] = bin2bcd(tm->tm_sec);
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buf[ABX8XX_REG_MN] = bin2bcd(tm->tm_min);
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buf[ABX8XX_REG_HR] = bin2bcd(tm->tm_hour);
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buf[ABX8XX_REG_DA] = bin2bcd(tm->tm_mday);
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buf[ABX8XX_REG_MO] = bin2bcd(tm->tm_mon + 1);
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buf[ABX8XX_REG_YR] = bin2bcd(tm->tm_year - 100);
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buf[ABX8XX_REG_WD] = tm->tm_wday;
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err = i2c_smbus_write_i2c_block_data(client, ABX8XX_REG_HTH,
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sizeof(buf), buf);
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if (err < 0) {
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dev_err(&client->dev, "Unable to write to date registers\n");
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return -EIO;
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}
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/* Clear the OF bit of Oscillator Status Register */
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flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSS);
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if (flags < 0)
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return flags;
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err = i2c_smbus_write_byte_data(client, ABX8XX_REG_OSS,
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flags & ~ABX8XX_OSS_OF);
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if (err < 0) {
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dev_err(&client->dev, "Unable to write oscillator status register\n");
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return err;
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}
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return 0;
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}
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static irqreturn_t abx80x_handle_irq(int irq, void *dev_id)
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{
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struct i2c_client *client = dev_id;
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struct rtc_device *rtc = i2c_get_clientdata(client);
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int status;
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status = i2c_smbus_read_byte_data(client, ABX8XX_REG_STATUS);
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if (status < 0)
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return IRQ_NONE;
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if (status & ABX8XX_STATUS_AF)
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rtc_update_irq(rtc, 1, RTC_AF | RTC_IRQF);
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i2c_smbus_write_byte_data(client, ABX8XX_REG_STATUS, 0);
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return IRQ_HANDLED;
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}
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static int abx80x_read_alarm(struct device *dev, struct rtc_wkalrm *t)
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{
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struct i2c_client *client = to_i2c_client(dev);
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unsigned char buf[7];
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int irq_mask, err;
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if (client->irq <= 0)
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return -EINVAL;
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err = i2c_smbus_read_i2c_block_data(client, ABX8XX_REG_ASC,
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sizeof(buf), buf);
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if (err)
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return err;
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irq_mask = i2c_smbus_read_byte_data(client, ABX8XX_REG_IRQ);
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if (irq_mask < 0)
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return irq_mask;
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t->time.tm_sec = bcd2bin(buf[0] & 0x7F);
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t->time.tm_min = bcd2bin(buf[1] & 0x7F);
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t->time.tm_hour = bcd2bin(buf[2] & 0x3F);
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t->time.tm_mday = bcd2bin(buf[3] & 0x3F);
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t->time.tm_mon = bcd2bin(buf[4] & 0x1F) - 1;
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t->time.tm_wday = buf[5] & 0x7;
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t->enabled = !!(irq_mask & ABX8XX_IRQ_AIE);
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t->pending = (buf[6] & ABX8XX_STATUS_AF) && t->enabled;
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return err;
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}
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static int abx80x_set_alarm(struct device *dev, struct rtc_wkalrm *t)
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{
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struct i2c_client *client = to_i2c_client(dev);
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u8 alarm[6];
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int err;
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if (client->irq <= 0)
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return -EINVAL;
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alarm[0] = 0x0;
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alarm[1] = bin2bcd(t->time.tm_sec);
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alarm[2] = bin2bcd(t->time.tm_min);
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alarm[3] = bin2bcd(t->time.tm_hour);
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alarm[4] = bin2bcd(t->time.tm_mday);
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alarm[5] = bin2bcd(t->time.tm_mon + 1);
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err = i2c_smbus_write_i2c_block_data(client, ABX8XX_REG_AHTH,
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sizeof(alarm), alarm);
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if (err < 0) {
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dev_err(&client->dev, "Unable to write alarm registers\n");
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return -EIO;
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}
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if (t->enabled) {
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err = i2c_smbus_write_byte_data(client, ABX8XX_REG_IRQ,
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(ABX8XX_IRQ_IM_1_4 |
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ABX8XX_IRQ_AIE));
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if (err)
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return err;
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}
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return 0;
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}
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static int abx80x_rtc_set_autocalibration(struct device *dev,
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int autocalibration)
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{
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struct i2c_client *client = to_i2c_client(dev);
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int retval, flags = 0;
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if ((autocalibration != 0) && (autocalibration != 1024) &&
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(autocalibration != 512)) {
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dev_err(dev, "autocalibration value outside permitted range\n");
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return -EINVAL;
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}
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flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSC);
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if (flags < 0)
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return flags;
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if (autocalibration == 0) {
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flags &= ~(ABX8XX_OSC_ACAL_512 | ABX8XX_OSC_ACAL_1024);
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} else if (autocalibration == 1024) {
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/* 1024 autocalibration is 0x10 */
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flags |= ABX8XX_OSC_ACAL_1024;
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flags &= ~(ABX8XX_OSC_ACAL_512);
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} else {
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/* 512 autocalibration is 0x11 */
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flags |= (ABX8XX_OSC_ACAL_1024 | ABX8XX_OSC_ACAL_512);
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}
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/* Unlock write access to Oscillator Control Register */
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retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY,
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ABX8XX_CFG_KEY_OSC);
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if (retval < 0) {
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dev_err(dev, "Failed to write CONFIG_KEY register\n");
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return retval;
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}
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retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_OSC, flags);
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return retval;
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}
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static int abx80x_rtc_get_autocalibration(struct device *dev)
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{
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struct i2c_client *client = to_i2c_client(dev);
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int flags = 0, autocalibration;
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flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSC);
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if (flags < 0)
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return flags;
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if (flags & ABX8XX_OSC_ACAL_512)
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autocalibration = 512;
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else if (flags & ABX8XX_OSC_ACAL_1024)
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autocalibration = 1024;
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else
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autocalibration = 0;
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return autocalibration;
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}
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static ssize_t autocalibration_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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int retval;
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unsigned long autocalibration = 0;
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retval = kstrtoul(buf, 10, &autocalibration);
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if (retval < 0) {
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dev_err(dev, "Failed to store RTC autocalibration attribute\n");
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return -EINVAL;
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}
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retval = abx80x_rtc_set_autocalibration(dev, autocalibration);
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return retval ? retval : count;
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}
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static ssize_t autocalibration_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int autocalibration = 0;
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autocalibration = abx80x_rtc_get_autocalibration(dev);
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if (autocalibration < 0) {
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dev_err(dev, "Failed to read RTC autocalibration\n");
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sprintf(buf, "0\n");
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return autocalibration;
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}
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return sprintf(buf, "%d\n", autocalibration);
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}
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static DEVICE_ATTR_RW(autocalibration);
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static ssize_t oscillator_store(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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int retval, flags, rc_mode = 0;
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if (strncmp(buf, "rc", 2) == 0) {
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rc_mode = 1;
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} else if (strncmp(buf, "xtal", 4) == 0) {
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rc_mode = 0;
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} else {
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dev_err(dev, "Oscillator selection value outside permitted ones\n");
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return -EINVAL;
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}
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flags = i2c_smbus_read_byte_data(client, ABX8XX_REG_OSC);
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if (flags < 0)
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return flags;
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if (rc_mode == 0)
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flags &= ~(ABX8XX_OSC_OSEL);
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else
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flags |= (ABX8XX_OSC_OSEL);
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/* Unlock write access on Oscillator Control register */
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retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_CFG_KEY,
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ABX8XX_CFG_KEY_OSC);
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if (retval < 0) {
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dev_err(dev, "Failed to write CONFIG_KEY register\n");
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return retval;
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}
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retval = i2c_smbus_write_byte_data(client, ABX8XX_REG_OSC, flags);
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if (retval < 0) {
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dev_err(dev, "Failed to write Oscillator Control register\n");
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return retval;
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}
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return retval ? retval : count;
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}
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static ssize_t oscillator_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int rc_mode = 0;
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struct i2c_client *client = to_i2c_client(dev);
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rc_mode = abx80x_is_rc_mode(client);
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if (rc_mode < 0) {
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dev_err(dev, "Failed to read RTC oscillator selection\n");
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sprintf(buf, "\n");
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return rc_mode;
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}
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if (rc_mode)
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return sprintf(buf, "rc\n");
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else
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return sprintf(buf, "xtal\n");
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}
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static DEVICE_ATTR_RW(oscillator);
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static struct attribute *rtc_calib_attrs[] = {
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&dev_attr_autocalibration.attr,
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&dev_attr_oscillator.attr,
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NULL,
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};
|
|
|
|
static const struct attribute_group rtc_calib_attr_group = {
|
|
.attrs = rtc_calib_attrs,
|
|
};
|
|
|
|
static int abx80x_alarm_irq_enable(struct device *dev, unsigned int enabled)
|
|
{
|
|
struct i2c_client *client = to_i2c_client(dev);
|
|
int err;
|
|
|
|
if (enabled)
|
|
err = i2c_smbus_write_byte_data(client, ABX8XX_REG_IRQ,
|
|
(ABX8XX_IRQ_IM_1_4 |
|
|
ABX8XX_IRQ_AIE));
|
|
else
|
|
err = i2c_smbus_write_byte_data(client, ABX8XX_REG_IRQ,
|
|
ABX8XX_IRQ_IM_1_4);
|
|
return err;
|
|
}
|
|
|
|
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,
|
|
};
|
|
|
|
static int abx80x_dt_trickle_cfg(struct device_node *np)
|
|
{
|
|
const char *diode;
|
|
int trickle_cfg = 0;
|
|
int i, ret;
|
|
u32 tmp;
|
|
|
|
ret = of_property_read_string(np, "abracon,tc-diode", &diode);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (!strcmp(diode, "standard"))
|
|
trickle_cfg |= ABX8XX_TRICKLE_STANDARD_DIODE;
|
|
else if (!strcmp(diode, "schottky"))
|
|
trickle_cfg |= ABX8XX_TRICKLE_SCHOTTKY_DIODE;
|
|
else
|
|
return -EINVAL;
|
|
|
|
ret = of_property_read_u32(np, "abracon,tc-resistor", &tmp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
for (i = 0; i < sizeof(trickle_resistors); i++)
|
|
if (trickle_resistors[i] == tmp)
|
|
break;
|
|
|
|
if (i == sizeof(trickle_resistors))
|
|
return -EINVAL;
|
|
|
|
return (trickle_cfg | i);
|
|
}
|
|
|
|
static void rtc_calib_remove_sysfs_group(void *_dev)
|
|
{
|
|
struct device *dev = _dev;
|
|
|
|
sysfs_remove_group(&dev->kobj, &rtc_calib_attr_group);
|
|
}
|
|
|
|
static int abx80x_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device_node *np = client->dev.of_node;
|
|
struct rtc_device *rtc;
|
|
int i, data, err, trickle_cfg = -EINVAL;
|
|
char buf[7];
|
|
unsigned int part = id->driver_data;
|
|
unsigned int partnumber;
|
|
unsigned int majrev, minrev;
|
|
unsigned int lot;
|
|
unsigned int wafer;
|
|
unsigned int uid;
|
|
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
|
|
return -ENODEV;
|
|
|
|
err = i2c_smbus_read_i2c_block_data(client, ABX8XX_REG_ID0,
|
|
sizeof(buf), buf);
|
|
if (err < 0) {
|
|
dev_err(&client->dev, "Unable to read partnumber\n");
|
|
return -EIO;
|
|
}
|
|
|
|
partnumber = (buf[0] << 8) | buf[1];
|
|
majrev = buf[2] >> 3;
|
|
minrev = buf[2] & 0x7;
|
|
lot = ((buf[4] & 0x80) << 2) | ((buf[6] & 0x80) << 1) | buf[3];
|
|
uid = ((buf[4] & 0x7f) << 8) | buf[5];
|
|
wafer = (buf[6] & 0x7c) >> 2;
|
|
dev_info(&client->dev, "model %04x, revision %u.%u, lot %x, wafer %x, uid %x\n",
|
|
partnumber, majrev, minrev, lot, wafer, uid);
|
|
|
|
data = i2c_smbus_read_byte_data(client, ABX8XX_REG_CTRL1);
|
|
if (data < 0) {
|
|
dev_err(&client->dev, "Unable to read control register\n");
|
|
return -EIO;
|
|
}
|
|
|
|
err = i2c_smbus_write_byte_data(client, ABX8XX_REG_CTRL1,
|
|
((data & ~(ABX8XX_CTRL_12_24 |
|
|
ABX8XX_CTRL_ARST)) |
|
|
ABX8XX_CTRL_WRITE));
|
|
if (err < 0) {
|
|
dev_err(&client->dev, "Unable to write control register\n");
|
|
return -EIO;
|
|
}
|
|
|
|
/* part autodetection */
|
|
if (part == ABX80X) {
|
|
for (i = 0; abx80x_caps[i].pn; i++)
|
|
if (partnumber == abx80x_caps[i].pn)
|
|
break;
|
|
if (abx80x_caps[i].pn == 0) {
|
|
dev_err(&client->dev, "Unknown part: %04x\n",
|
|
partnumber);
|
|
return -EINVAL;
|
|
}
|
|
part = i;
|
|
}
|
|
|
|
if (partnumber != abx80x_caps[part].pn) {
|
|
dev_err(&client->dev, "partnumber mismatch %04x != %04x\n",
|
|
partnumber, abx80x_caps[part].pn);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (np && abx80x_caps[part].has_tc)
|
|
trickle_cfg = abx80x_dt_trickle_cfg(np);
|
|
|
|
if (trickle_cfg > 0) {
|
|
dev_info(&client->dev, "Enabling trickle charger: %02x\n",
|
|
trickle_cfg);
|
|
abx80x_enable_trickle_charger(client, trickle_cfg);
|
|
}
|
|
|
|
err = i2c_smbus_write_byte_data(client, ABX8XX_REG_CD_TIMER_CTL,
|
|
BIT(2));
|
|
if (err)
|
|
return err;
|
|
|
|
rtc = devm_rtc_device_register(&client->dev, "abx8xx",
|
|
&abx80x_rtc_ops, THIS_MODULE);
|
|
|
|
if (IS_ERR(rtc))
|
|
return PTR_ERR(rtc);
|
|
|
|
i2c_set_clientdata(client, rtc);
|
|
|
|
if (client->irq > 0) {
|
|
dev_info(&client->dev, "IRQ %d supplied\n", client->irq);
|
|
err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
|
|
abx80x_handle_irq,
|
|
IRQF_SHARED | IRQF_ONESHOT,
|
|
"abx8xx",
|
|
client);
|
|
if (err) {
|
|
dev_err(&client->dev, "unable to request IRQ, alarms disabled\n");
|
|
client->irq = 0;
|
|
}
|
|
}
|
|
|
|
/* Export sysfs entries */
|
|
err = sysfs_create_group(&(&client->dev)->kobj, &rtc_calib_attr_group);
|
|
if (err) {
|
|
dev_err(&client->dev, "Failed to create sysfs group: %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
err = devm_add_action(&client->dev, rtc_calib_remove_sysfs_group,
|
|
&client->dev);
|
|
if (err) {
|
|
rtc_calib_remove_sysfs_group(&client->dev);
|
|
dev_err(&client->dev,
|
|
"Failed to add sysfs cleanup action: %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int abx80x_remove(struct i2c_client *client)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id abx80x_id[] = {
|
|
{ "abx80x", ABX80X },
|
|
{ "ab0801", AB0801 },
|
|
{ "ab0803", AB0803 },
|
|
{ "ab0804", AB0804 },
|
|
{ "ab0805", AB0805 },
|
|
{ "ab1801", AB1801 },
|
|
{ "ab1803", AB1803 },
|
|
{ "ab1804", AB1804 },
|
|
{ "ab1805", AB1805 },
|
|
{ "rv1805", AB1805 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, abx80x_id);
|
|
|
|
static struct i2c_driver abx80x_driver = {
|
|
.driver = {
|
|
.name = "rtc-abx80x",
|
|
},
|
|
.probe = abx80x_probe,
|
|
.remove = abx80x_remove,
|
|
.id_table = abx80x_id,
|
|
};
|
|
|
|
module_i2c_driver(abx80x_driver);
|
|
|
|
MODULE_AUTHOR("Philippe De Muyter <phdm@macqel.be>");
|
|
MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@free-electrons.com>");
|
|
MODULE_DESCRIPTION("Abracon ABX80X RTC driver");
|
|
MODULE_LICENSE("GPL v2");
|