ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/drivers/rtc/rtc-pcf8563.c b/marvell/linux/drivers/rtc/rtc-pcf8563.c
new file mode 100644
index 0000000..24baa47
--- /dev/null
+++ b/marvell/linux/drivers/rtc/rtc-pcf8563.c
@@ -0,0 +1,649 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * An I2C driver for the Philips PCF8563 RTC
+ * Copyright 2005-06 Tower Technologies
+ *
+ * Author: Alessandro Zummo <a.zummo@towertech.it>
+ * Maintainers: http://www.nslu2-linux.org/
+ *
+ * based on the other drivers in this same directory.
+ *
+ * http://www.semiconductors.philips.com/acrobat/datasheets/PCF8563-04.pdf
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/i2c.h>
+#include <linux/bcd.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/err.h>
+
+#define PCF8563_REG_ST1 0x00 /* status */
+#define PCF8563_REG_ST2 0x01
+#define PCF8563_BIT_AIE (1 << 1)
+#define PCF8563_BIT_AF (1 << 3)
+#define PCF8563_BITS_ST2_N (7 << 5)
+
+#define PCF8563_REG_SC 0x02 /* datetime */
+#define PCF8563_REG_MN 0x03
+#define PCF8563_REG_HR 0x04
+#define PCF8563_REG_DM 0x05
+#define PCF8563_REG_DW 0x06
+#define PCF8563_REG_MO 0x07
+#define PCF8563_REG_YR 0x08
+
+#define PCF8563_REG_AMN 0x09 /* alarm */
+
+#define PCF8563_REG_CLKO 0x0D /* clock out */
+#define PCF8563_REG_CLKO_FE 0x80 /* clock out enabled */
+#define PCF8563_REG_CLKO_F_MASK 0x03 /* frequenc mask */
+#define PCF8563_REG_CLKO_F_32768HZ 0x00
+#define PCF8563_REG_CLKO_F_1024HZ 0x01
+#define PCF8563_REG_CLKO_F_32HZ 0x02
+#define PCF8563_REG_CLKO_F_1HZ 0x03
+
+#define PCF8563_REG_TMRC 0x0E /* timer control */
+#define PCF8563_TMRC_ENABLE BIT(7)
+#define PCF8563_TMRC_4096 0
+#define PCF8563_TMRC_64 1
+#define PCF8563_TMRC_1 2
+#define PCF8563_TMRC_1_60 3
+#define PCF8563_TMRC_MASK 3
+
+#define PCF8563_REG_TMR 0x0F /* timer */
+
+#define PCF8563_SC_LV 0x80 /* low voltage */
+#define PCF8563_MO_C 0x80 /* century */
+
+static struct i2c_driver pcf8563_driver;
+
+struct pcf8563 {
+ struct rtc_device *rtc;
+ /*
+ * The meaning of MO_C bit varies by the chip type.
+ * From PCF8563 datasheet: this bit is toggled when the years
+ * register overflows from 99 to 00
+ * 0 indicates the century is 20xx
+ * 1 indicates the century is 19xx
+ * From RTC8564 datasheet: this bit indicates change of
+ * century. When the year digit data overflows from 99 to 00,
+ * this bit is set. By presetting it to 0 while still in the
+ * 20th century, it will be set in year 2000, ...
+ * There seems no reliable way to know how the system use this
+ * bit. So let's do it heuristically, assuming we are live in
+ * 1970...2069.
+ */
+ int c_polarity; /* 0: MO_C=1 means 19xx, otherwise MO_C=1 means 20xx */
+ int voltage_low; /* incicates if a low_voltage was detected */
+
+ struct i2c_client *client;
+#ifdef CONFIG_COMMON_CLK
+ struct clk_hw clkout_hw;
+#endif
+};
+
+static int pcf8563_read_block_data(struct i2c_client *client, unsigned char reg,
+ unsigned char length, unsigned char *buf)
+{
+ struct i2c_msg msgs[] = {
+ {/* setup read ptr */
+ .addr = client->addr,
+ .len = 1,
+ .buf = ®,
+ },
+ {
+ .addr = client->addr,
+ .flags = I2C_M_RD,
+ .len = length,
+ .buf = buf
+ },
+ };
+
+ if ((i2c_transfer(client->adapter, msgs, 2)) != 2) {
+ dev_err(&client->dev, "%s: read error\n", __func__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int pcf8563_write_block_data(struct i2c_client *client,
+ unsigned char reg, unsigned char length,
+ unsigned char *buf)
+{
+ int i, err;
+
+ for (i = 0; i < length; i++) {
+ unsigned char data[2] = { reg + i, buf[i] };
+
+ err = i2c_master_send(client, data, sizeof(data));
+ if (err != sizeof(data)) {
+ dev_err(&client->dev,
+ "%s: err=%d addr=%02x, data=%02x\n",
+ __func__, err, data[0], data[1]);
+ return -EIO;
+ }
+ }
+
+ return 0;
+}
+
+static int pcf8563_set_alarm_mode(struct i2c_client *client, bool on)
+{
+ unsigned char buf;
+ int err;
+
+ err = pcf8563_read_block_data(client, PCF8563_REG_ST2, 1, &buf);
+ if (err < 0)
+ return err;
+
+ if (on)
+ buf |= PCF8563_BIT_AIE;
+ else
+ buf &= ~PCF8563_BIT_AIE;
+
+ buf &= ~(PCF8563_BIT_AF | PCF8563_BITS_ST2_N);
+
+ err = pcf8563_write_block_data(client, PCF8563_REG_ST2, 1, &buf);
+ if (err < 0) {
+ dev_err(&client->dev, "%s: write error\n", __func__);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int pcf8563_get_alarm_mode(struct i2c_client *client, unsigned char *en,
+ unsigned char *pen)
+{
+ unsigned char buf;
+ int err;
+
+ err = pcf8563_read_block_data(client, PCF8563_REG_ST2, 1, &buf);
+ if (err)
+ return err;
+
+ if (en)
+ *en = !!(buf & PCF8563_BIT_AIE);
+ if (pen)
+ *pen = !!(buf & PCF8563_BIT_AF);
+
+ return 0;
+}
+
+static irqreturn_t pcf8563_irq(int irq, void *dev_id)
+{
+ struct pcf8563 *pcf8563 = i2c_get_clientdata(dev_id);
+ int err;
+ char pending;
+
+ err = pcf8563_get_alarm_mode(pcf8563->client, NULL, &pending);
+ if (err)
+ return IRQ_NONE;
+
+ if (pending) {
+ rtc_update_irq(pcf8563->rtc, 1, RTC_IRQF | RTC_AF);
+ pcf8563_set_alarm_mode(pcf8563->client, 1);
+ return IRQ_HANDLED;
+ }
+
+ return IRQ_NONE;
+}
+
+/*
+ * In the routines that deal directly with the pcf8563 hardware, we use
+ * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
+ */
+static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf8563 *pcf8563 = i2c_get_clientdata(client);
+ unsigned char buf[9];
+ int err;
+
+ err = pcf8563_read_block_data(client, PCF8563_REG_ST1, 9, buf);
+ if (err)
+ return err;
+
+ if (buf[PCF8563_REG_SC] & PCF8563_SC_LV) {
+ pcf8563->voltage_low = 1;
+ dev_err(&client->dev,
+ "low voltage detected, date/time is not reliable.\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(&client->dev,
+ "%s: raw data is st1=%02x, st2=%02x, sec=%02x, min=%02x, hr=%02x, "
+ "mday=%02x, wday=%02x, mon=%02x, year=%02x\n",
+ __func__,
+ buf[0], buf[1], buf[2], buf[3],
+ buf[4], buf[5], buf[6], buf[7],
+ buf[8]);
+
+
+ tm->tm_sec = bcd2bin(buf[PCF8563_REG_SC] & 0x7F);
+ tm->tm_min = bcd2bin(buf[PCF8563_REG_MN] & 0x7F);
+ tm->tm_hour = bcd2bin(buf[PCF8563_REG_HR] & 0x3F); /* rtc hr 0-23 */
+ tm->tm_mday = bcd2bin(buf[PCF8563_REG_DM] & 0x3F);
+ tm->tm_wday = buf[PCF8563_REG_DW] & 0x07;
+ tm->tm_mon = bcd2bin(buf[PCF8563_REG_MO] & 0x1F) - 1; /* rtc mn 1-12 */
+ tm->tm_year = bcd2bin(buf[PCF8563_REG_YR]) + 100;
+ /* detect the polarity heuristically. see note above. */
+ pcf8563->c_polarity = (buf[PCF8563_REG_MO] & PCF8563_MO_C) ?
+ (tm->tm_year >= 100) : (tm->tm_year < 100);
+
+ dev_dbg(&client->dev, "%s: tm is secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __func__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ return 0;
+}
+
+static int pcf8563_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf8563 *pcf8563 = i2c_get_clientdata(client);
+ unsigned char buf[9];
+
+ dev_dbg(&client->dev, "%s: secs=%d, mins=%d, hours=%d, "
+ "mday=%d, mon=%d, year=%d, wday=%d\n",
+ __func__,
+ tm->tm_sec, tm->tm_min, tm->tm_hour,
+ tm->tm_mday, tm->tm_mon, tm->tm_year, tm->tm_wday);
+
+ /* hours, minutes and seconds */
+ buf[PCF8563_REG_SC] = bin2bcd(tm->tm_sec);
+ buf[PCF8563_REG_MN] = bin2bcd(tm->tm_min);
+ buf[PCF8563_REG_HR] = bin2bcd(tm->tm_hour);
+
+ buf[PCF8563_REG_DM] = bin2bcd(tm->tm_mday);
+
+ /* month, 1 - 12 */
+ buf[PCF8563_REG_MO] = bin2bcd(tm->tm_mon + 1);
+
+ /* year and century */
+ buf[PCF8563_REG_YR] = bin2bcd(tm->tm_year - 100);
+ if (pcf8563->c_polarity ? (tm->tm_year >= 100) : (tm->tm_year < 100))
+ buf[PCF8563_REG_MO] |= PCF8563_MO_C;
+
+ buf[PCF8563_REG_DW] = tm->tm_wday & 0x07;
+
+ return pcf8563_write_block_data(client, PCF8563_REG_SC,
+ 9 - PCF8563_REG_SC, buf + PCF8563_REG_SC);
+}
+
+#ifdef CONFIG_RTC_INTF_DEV
+static int pcf8563_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+{
+ struct pcf8563 *pcf8563 = i2c_get_clientdata(to_i2c_client(dev));
+ struct rtc_time tm;
+
+ switch (cmd) {
+ case RTC_VL_READ:
+ if (pcf8563->voltage_low)
+ dev_info(dev, "low voltage detected, date/time is not reliable.\n");
+
+ if (copy_to_user((void __user *)arg, &pcf8563->voltage_low,
+ sizeof(int)))
+ return -EFAULT;
+ return 0;
+ case RTC_VL_CLR:
+ /*
+ * Clear the VL bit in the seconds register in case
+ * the time has not been set already (which would
+ * have cleared it). This does not really matter
+ * because of the cached voltage_low value but do it
+ * anyway for consistency.
+ */
+ if (pcf8563_rtc_read_time(dev, &tm))
+ pcf8563_rtc_set_time(dev, &tm);
+
+ /* Clear the cached value. */
+ pcf8563->voltage_low = 0;
+
+ return 0;
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+#else
+#define pcf8563_rtc_ioctl NULL
+#endif
+
+static int pcf8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ unsigned char buf[4];
+ int err;
+
+ err = pcf8563_read_block_data(client, PCF8563_REG_AMN, 4, buf);
+ if (err)
+ return err;
+
+ dev_dbg(&client->dev,
+ "%s: raw data is min=%02x, hr=%02x, mday=%02x, wday=%02x\n",
+ __func__, buf[0], buf[1], buf[2], buf[3]);
+
+ tm->time.tm_sec = 0;
+ tm->time.tm_min = bcd2bin(buf[0] & 0x7F);
+ tm->time.tm_hour = bcd2bin(buf[1] & 0x3F);
+ tm->time.tm_mday = bcd2bin(buf[2] & 0x3F);
+ tm->time.tm_wday = bcd2bin(buf[3] & 0x7);
+
+ err = pcf8563_get_alarm_mode(client, &tm->enabled, &tm->pending);
+ if (err < 0)
+ return err;
+
+ dev_dbg(&client->dev, "%s: tm is mins=%d, hours=%d, mday=%d, wday=%d,"
+ " enabled=%d, pending=%d\n", __func__, tm->time.tm_min,
+ tm->time.tm_hour, tm->time.tm_mday, tm->time.tm_wday,
+ tm->enabled, tm->pending);
+
+ return 0;
+}
+
+static int pcf8563_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ unsigned char buf[4];
+ int err;
+
+ /* The alarm has no seconds, round up to nearest minute */
+ if (tm->time.tm_sec) {
+ time64_t alarm_time = rtc_tm_to_time64(&tm->time);
+
+ alarm_time += 60 - tm->time.tm_sec;
+ rtc_time64_to_tm(alarm_time, &tm->time);
+ }
+
+ dev_dbg(dev, "%s, min=%d hour=%d wday=%d mday=%d "
+ "enabled=%d pending=%d\n", __func__,
+ tm->time.tm_min, tm->time.tm_hour, tm->time.tm_wday,
+ tm->time.tm_mday, tm->enabled, tm->pending);
+
+ buf[0] = bin2bcd(tm->time.tm_min);
+ buf[1] = bin2bcd(tm->time.tm_hour);
+ buf[2] = bin2bcd(tm->time.tm_mday);
+ buf[3] = tm->time.tm_wday & 0x07;
+
+ err = pcf8563_write_block_data(client, PCF8563_REG_AMN, 4, buf);
+ if (err)
+ return err;
+
+ return pcf8563_set_alarm_mode(client, !!tm->enabled);
+}
+
+static int pcf8563_irq_enable(struct device *dev, unsigned int enabled)
+{
+ dev_dbg(dev, "%s: en=%d\n", __func__, enabled);
+ return pcf8563_set_alarm_mode(to_i2c_client(dev), !!enabled);
+}
+
+#ifdef CONFIG_COMMON_CLK
+/*
+ * Handling of the clkout
+ */
+
+#define clkout_hw_to_pcf8563(_hw) container_of(_hw, struct pcf8563, clkout_hw)
+
+static int clkout_rates[] = {
+ 32768,
+ 1024,
+ 32,
+ 1,
+};
+
+static unsigned long pcf8563_clkout_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+
+ if (ret < 0)
+ return 0;
+
+ buf &= PCF8563_REG_CLKO_F_MASK;
+ return clkout_rates[buf];
+}
+
+static long pcf8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(clkout_rates); i++)
+ if (clkout_rates[i] <= rate)
+ return clkout_rates[i];
+
+ return 0;
+}
+
+static int pcf8563_clkout_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+ int i;
+
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < ARRAY_SIZE(clkout_rates); i++)
+ if (clkout_rates[i] == rate) {
+ buf &= ~PCF8563_REG_CLKO_F_MASK;
+ buf |= i;
+ ret = pcf8563_write_block_data(client,
+ PCF8563_REG_CLKO, 1,
+ &buf);
+ return ret;
+ }
+
+ return -EINVAL;
+}
+
+static int pcf8563_clkout_control(struct clk_hw *hw, bool enable)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+
+ if (ret < 0)
+ return ret;
+
+ if (enable)
+ buf |= PCF8563_REG_CLKO_FE;
+ else
+ buf &= ~PCF8563_REG_CLKO_FE;
+
+ ret = pcf8563_write_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+ return ret;
+}
+
+static int pcf8563_clkout_prepare(struct clk_hw *hw)
+{
+ return pcf8563_clkout_control(hw, 1);
+}
+
+static void pcf8563_clkout_unprepare(struct clk_hw *hw)
+{
+ pcf8563_clkout_control(hw, 0);
+}
+
+static int pcf8563_clkout_is_prepared(struct clk_hw *hw)
+{
+ struct pcf8563 *pcf8563 = clkout_hw_to_pcf8563(hw);
+ struct i2c_client *client = pcf8563->client;
+ unsigned char buf;
+ int ret = pcf8563_read_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+
+ if (ret < 0)
+ return ret;
+
+ return !!(buf & PCF8563_REG_CLKO_FE);
+}
+
+static const struct clk_ops pcf8563_clkout_ops = {
+ .prepare = pcf8563_clkout_prepare,
+ .unprepare = pcf8563_clkout_unprepare,
+ .is_prepared = pcf8563_clkout_is_prepared,
+ .recalc_rate = pcf8563_clkout_recalc_rate,
+ .round_rate = pcf8563_clkout_round_rate,
+ .set_rate = pcf8563_clkout_set_rate,
+};
+
+static struct clk *pcf8563_clkout_register_clk(struct pcf8563 *pcf8563)
+{
+ struct i2c_client *client = pcf8563->client;
+ struct device_node *node = client->dev.of_node;
+ struct clk *clk;
+ struct clk_init_data init;
+ int ret;
+ unsigned char buf;
+
+ /* disable the clkout output */
+ buf = 0;
+ ret = pcf8563_write_block_data(client, PCF8563_REG_CLKO, 1, &buf);
+ if (ret < 0)
+ return ERR_PTR(ret);
+
+ init.name = "pcf8563-clkout";
+ init.ops = &pcf8563_clkout_ops;
+ init.flags = 0;
+ init.parent_names = NULL;
+ init.num_parents = 0;
+ pcf8563->clkout_hw.init = &init;
+
+ /* optional override of the clockname */
+ of_property_read_string(node, "clock-output-names", &init.name);
+
+ /* register the clock */
+ clk = devm_clk_register(&client->dev, &pcf8563->clkout_hw);
+
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+
+ return clk;
+}
+#endif
+
+static const struct rtc_class_ops pcf8563_rtc_ops = {
+ .ioctl = pcf8563_rtc_ioctl,
+ .read_time = pcf8563_rtc_read_time,
+ .set_time = pcf8563_rtc_set_time,
+ .read_alarm = pcf8563_rtc_read_alarm,
+ .set_alarm = pcf8563_rtc_set_alarm,
+ .alarm_irq_enable = pcf8563_irq_enable,
+};
+
+static int pcf8563_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct pcf8563 *pcf8563;
+ int err;
+ unsigned char buf;
+
+ dev_dbg(&client->dev, "%s\n", __func__);
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
+ return -ENODEV;
+
+ pcf8563 = devm_kzalloc(&client->dev, sizeof(struct pcf8563),
+ GFP_KERNEL);
+ if (!pcf8563)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, pcf8563);
+ pcf8563->client = client;
+ device_set_wakeup_capable(&client->dev, 1);
+
+ /* Set timer to lowest frequency to save power (ref Haoyu datasheet) */
+ buf = PCF8563_TMRC_1_60;
+ err = pcf8563_write_block_data(client, PCF8563_REG_TMRC, 1, &buf);
+ if (err < 0) {
+ dev_err(&client->dev, "%s: write error\n", __func__);
+ return err;
+ }
+
+ /* Clear flags and disable interrupts */
+ buf = 0;
+ err = pcf8563_write_block_data(client, PCF8563_REG_ST2, 1, &buf);
+ if (err < 0) {
+ dev_err(&client->dev, "%s: write error\n", __func__);
+ return err;
+ }
+
+ pcf8563->rtc = devm_rtc_allocate_device(&client->dev);
+ if (IS_ERR(pcf8563->rtc))
+ return PTR_ERR(pcf8563->rtc);
+
+ pcf8563->rtc->ops = &pcf8563_rtc_ops;
+ /* the pcf8563 alarm only supports a minute accuracy */
+ pcf8563->rtc->uie_unsupported = 1;
+ pcf8563->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ pcf8563->rtc->range_max = RTC_TIMESTAMP_END_2099;
+ pcf8563->rtc->set_start_time = true;
+
+ if (client->irq > 0) {
+ err = devm_request_threaded_irq(&client->dev, client->irq,
+ NULL, pcf8563_irq,
+ IRQF_SHARED | IRQF_ONESHOT | IRQF_TRIGGER_LOW,
+ pcf8563_driver.driver.name, client);
+ if (err) {
+ dev_err(&client->dev, "unable to request IRQ %d\n",
+ client->irq);
+ return err;
+ }
+ }
+
+ err = rtc_register_device(pcf8563->rtc);
+ if (err)
+ return err;
+
+#ifdef CONFIG_COMMON_CLK
+ /* register clk in common clk framework */
+ pcf8563_clkout_register_clk(pcf8563);
+#endif
+
+ return 0;
+}
+
+static const struct i2c_device_id pcf8563_id[] = {
+ { "pcf8563", 0 },
+ { "rtc8564", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, pcf8563_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id pcf8563_of_match[] = {
+ { .compatible = "nxp,pcf8563" },
+ { .compatible = "epson,rtc8564" },
+ { .compatible = "microcrystal,rv8564" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, pcf8563_of_match);
+#endif
+
+static struct i2c_driver pcf8563_driver = {
+ .driver = {
+ .name = "rtc-pcf8563",
+ .of_match_table = of_match_ptr(pcf8563_of_match),
+ },
+ .probe = pcf8563_probe,
+ .id_table = pcf8563_id,
+};
+
+module_i2c_driver(pcf8563_driver);
+
+MODULE_AUTHOR("Alessandro Zummo <a.zummo@towertech.it>");
+MODULE_DESCRIPTION("Philips PCF8563/Epson RTC8564 RTC driver");
+MODULE_LICENSE("GPL");