+/*
+ * Real Time Clock driver for Wolfson Microelectronics tps65910
+ *
+ * Copyright (C) 2009 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
+#include <linux/rtc.h>
+#include <linux/slab.h>
+#include <linux/bcd.h>
+#include <linux/interrupt.h>
+#include <linux/ioctl.h>
+#include <linux/completion.h>
+#include <linux/mfd/tps65910.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/miscdevice.h>
+
+
+/* RTC Definitions */
+/* RTC_CTRL_REG bitfields */
+#define BIT_RTC_CTRL_REG_STOP_RTC_M 0x01
+#define BIT_RTC_CTRL_REG_ROUND_30S_M 0x02
+#define BIT_RTC_CTRL_REG_AUTO_COMP_M 0x04
+#define BIT_RTC_CTRL_REG_MODE_12_24_M 0x08
+#define BIT_RTC_CTRL_REG_TEST_MODE_M 0x10
+#define BIT_RTC_CTRL_REG_SET_32_COUNTER_M 0x20
+#define BIT_RTC_CTRL_REG_GET_TIME_M 0x40
+#define BIT_RTC_CTRL_REG_RTC_V_OPT_M 0x80
+
+/* RTC_STATUS_REG bitfields */
+#define BIT_RTC_STATUS_REG_RUN_M 0x02
+#define BIT_RTC_STATUS_REG_1S_EVENT_M 0x04
+#define BIT_RTC_STATUS_REG_1M_EVENT_M 0x08
+#define BIT_RTC_STATUS_REG_1H_EVENT_M 0x10
+#define BIT_RTC_STATUS_REG_1D_EVENT_M 0x20
+#define BIT_RTC_STATUS_REG_ALARM_M 0x40
+#define BIT_RTC_STATUS_REG_POWER_UP_M 0x80
+
+/* RTC_INTERRUPTS_REG bitfields */
+#define BIT_RTC_INTERRUPTS_REG_EVERY_M 0x03
+#define BIT_RTC_INTERRUPTS_REG_IT_TIMER_M 0x04
+#define BIT_RTC_INTERRUPTS_REG_IT_ALARM_M 0x08
+
+/* DEVCTRL bitfields */
+#define BIT_RTC_PWDN 0x40
+
+/* REG_SECONDS_REG through REG_YEARS_REG is how many registers? */
+#define ALL_TIME_REGS 7
+#define ALL_ALM_REGS 6
+
+
+#define RTC_SET_TIME_RETRIES 5
+#define RTC_GET_TIME_RETRIES 5
+
+
+struct tps65910_rtc {
+ struct tps65910 *tps65910;
+ struct rtc_device *rtc;
+ unsigned int alarm_enabled:1;
+};
+
+/*
+ * Read current time and date in RTC
+ */
+static int tps65910_rtc_readtime(struct device *dev, struct rtc_time *tm)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+ struct tps65910 *tps65910 = tps65910_rtc->tps65910;
+ int ret;
+ int count = 0;
+ unsigned char rtc_data[ALL_TIME_REGS + 1];
+ u8 rtc_ctl;
+
+ /*Dummy read*/
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_CTRL);
+
+ /* Has the RTC been programmed? */
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_CTRL);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read RTC control: %d\n", ret);
+ return ret;
+ }
+
+ rtc_ctl = ret & (~BIT_RTC_CTRL_REG_RTC_V_OPT_M);
+
+ ret = tps65910_reg_write(tps65910, TPS65910_RTC_CTRL, rtc_ctl);
+ if (ret < 0) {
+ dev_err(dev, "Failed to write RTC control: %d\n", ret);
+ return ret;
+ }
+
+
+ /* Read twice to make sure we don't read a corrupt, partially
+ * incremented, value.
+ */
+ do {
+ ret = tps65910_bulk_read(tps65910, TPS65910_SECONDS,
+ ALL_TIME_REGS, rtc_data);
+ if (ret != 0)
+ continue;
+
+ tm->tm_sec = bcd2bin(rtc_data[0]);
+ tm->tm_min = bcd2bin(rtc_data[1]);
+ tm->tm_hour = bcd2bin(rtc_data[2]);
+ tm->tm_mday = bcd2bin(rtc_data[3]);
+ tm->tm_mon = bcd2bin(rtc_data[4]) - 1;
+ tm->tm_year = bcd2bin(rtc_data[5]) + 100;
+ tm->tm_wday = bcd2bin(rtc_data[6]);
+
+ dev_dbg(dev, "RTC date/time %4d-%02d-%02d(%d) %02d:%02d:%02d\n",
+ 1900 + tm->tm_year, tm->tm_mon + 1, tm->tm_mday, tm->tm_wday,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+ return ret;
+
+ } while (++count < RTC_GET_TIME_RETRIES);
+ dev_err(dev, "Timed out reading current time\n");
+
+ return -EIO;
+
+}
+
+/*
+ * Set current time and date in RTC
+ */
+static int tps65910_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+ struct tps65910 *tps65910 = tps65910_rtc->tps65910;
+ int ret;
+ u8 rtc_ctl;
+ unsigned char rtc_data[ALL_TIME_REGS + 1];
+
+ rtc_data[0] = bin2bcd(tm->tm_sec);
+ rtc_data[1] = bin2bcd(tm->tm_min);
+ rtc_data[2] = bin2bcd(tm->tm_hour);
+ rtc_data[3] = bin2bcd(tm->tm_mday);
+ rtc_data[4] = bin2bcd(tm->tm_mon + 1);
+ rtc_data[5] = bin2bcd(tm->tm_year - 100);
+ rtc_data[6] = bin2bcd(tm->tm_wday);
+
+ /*Dummy read*/
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_CTRL);
+
+ /* Stop RTC while updating the TC registers */
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_CTRL);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read RTC control: %d\n", ret);
+ return ret;
+ }
+
+ rtc_ctl = ret & (~BIT_RTC_CTRL_REG_STOP_RTC_M);
+
+ ret = tps65910_reg_write(tps65910, TPS65910_RTC_CTRL, rtc_ctl);
+ if (ret < 0) {
+ dev_err(dev, "Failed to write RTC control: %d\n", ret);
+ return ret;
+ }
+
+ /* update all the time registers in one shot */
+ ret = tps65910_bulk_write(tps65910, TPS65910_SECONDS,
+ ALL_TIME_REGS, rtc_data);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read RTC times: %d\n", ret);
+ return ret;
+ }
+
+ /*Dummy read*/
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_CTRL);
+
+ /* Start RTC again */
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_CTRL);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read RTC control: %d\n", ret);
+ return ret;
+ }
+
+ rtc_ctl = ret | BIT_RTC_CTRL_REG_STOP_RTC_M;
+
+ ret = tps65910_reg_write(tps65910, TPS65910_RTC_CTRL, rtc_ctl);
+ if (ret < 0) {
+ dev_err(dev, "Failed to write RTC control: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+/*
+ * Read alarm time and date in RTC
+ */
+static int tps65910_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+ int ret;
+ unsigned char alrm_data[ALL_ALM_REGS + 1];
+
+ ret = tps65910_bulk_read(tps65910_rtc->tps65910, TPS65910_ALARM_SECONDS,
+ ALL_ALM_REGS, alrm_data);
+ if (ret != 0) {
+ dev_err(dev, "Failed to read alarm time: %d\n", ret);
+ return ret;
+ }
+
+ /* some of these fields may be wildcard/"match all" */
+ alrm->time.tm_sec = bcd2bin(alrm_data[0]);
+ alrm->time.tm_min = bcd2bin(alrm_data[1]);
+ alrm->time.tm_hour = bcd2bin(alrm_data[2]);
+ alrm->time.tm_mday = bcd2bin(alrm_data[3]);
+ alrm->time.tm_mon = bcd2bin(alrm_data[4]) - 1;
+ alrm->time.tm_year = bcd2bin(alrm_data[5]) + 100;
+
+ ret = tps65910_reg_read(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read RTC control: %d\n", ret);
+ return ret;
+ }
+
+ if (ret & BIT_RTC_INTERRUPTS_REG_IT_ALARM_M)
+ alrm->enabled = 1;
+ else
+ alrm->enabled = 0;
+
+ return 0;
+}
+
+static int tps65910_rtc_stop_alarm(struct tps65910_rtc *tps65910_rtc)
+{
+ tps65910_rtc->alarm_enabled = 0;
+
+ return tps65910_clear_bits(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS,
+ BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+
+}
+
+static int tps65910_rtc_start_alarm(struct tps65910_rtc *tps65910_rtc)
+{
+ tps65910_rtc->alarm_enabled = 1;
+
+ return tps65910_set_bits(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS,
+ BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+
+}
+
+static int tps65910_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+ int ret;
+ unsigned char alrm_data[ALL_TIME_REGS + 1];
+
+ ret = tps65910_rtc_stop_alarm(tps65910_rtc);
+ if (ret < 0) {
+ dev_err(dev, "Failed to stop alarm: %d\n", ret);
+ return ret;
+ }
+
+ alrm_data[0] = bin2bcd(alrm->time.tm_sec);
+ alrm_data[1] = bin2bcd(alrm->time.tm_min);
+ alrm_data[2] = bin2bcd(alrm->time.tm_hour);
+ alrm_data[3] = bin2bcd(alrm->time.tm_mday);
+ alrm_data[4] = bin2bcd(alrm->time.tm_mon + 1);
+ alrm_data[5] = bin2bcd(alrm->time.tm_year - 100);
+
+ ret = tps65910_bulk_write(tps65910_rtc->tps65910, TPS65910_ALARM_SECONDS,
+ ALL_ALM_REGS, alrm_data);
+ if (ret != 0) {
+ dev_err(dev, "Failed to read alarm time: %d\n", ret);
+ return ret;
+ }
+
+ if (alrm->enabled) {
+ ret = tps65910_rtc_start_alarm(tps65910_rtc);
+ if (ret < 0) {
+ dev_err(dev, "Failed to start alarm: %d\n", ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int tps65910_rtc_alarm_irq_enable(struct device *dev,
+ unsigned int enabled)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+
+ if (enabled)
+ return tps65910_rtc_start_alarm(tps65910_rtc);
+ else
+ return tps65910_rtc_stop_alarm(tps65910_rtc);
+}
+
+static int tps65910_rtc_update_irq_enable(struct device *dev,
+ unsigned int enabled)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+
+ if (enabled)
+ return tps65910_set_bits(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS,
+ BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+ else
+ return tps65910_clear_bits(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS,
+ BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+}
+
+/*
+ * We will just handle setting the frequency and make use the framework for
+ * reading the periodic interupts.
+ *
+ * @freq: Current periodic IRQ freq:
+ * bit 0: every second
+ * bit 1: every minute
+ * bit 2: every hour
+ * bit 3: every day
+ */
+static int tps65910_rtc_irq_set_freq(struct device *dev, int freq)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+ int ret;
+ u8 rtc_ctl;
+
+ if (freq < 0 || freq > 3)
+ return -EINVAL;
+
+ ret = tps65910_reg_read(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read RTC interrupt: %d\n", ret);
+ return ret;
+ }
+
+ rtc_ctl = ret | freq;
+
+ ret = tps65910_reg_write(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS, rtc_ctl);
+ if (ret < 0) {
+ dev_err(dev, "Failed to write RTC control: %d\n", ret);
+ return ret;
+ }
+
+ return ret;
+}
+
+
+
+static irqreturn_t tps65910_alm_irq(int irq, void *data)
+{
+ struct tps65910_rtc *tps65910_rtc = data;
+
+ rtc_update_irq(tps65910_rtc->rtc, 1, RTC_IRQF | RTC_AF);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t tps65910_per_irq(int irq, void *data)
+{
+ struct tps65910_rtc *tps65910_rtc = data;
+
+ rtc_update_irq(tps65910_rtc->rtc, 1, RTC_IRQF | RTC_UF);
+
+ //printk("%s:irq=%d\n",__func__,irq);
+ return IRQ_HANDLED;
+}
+
+static const struct rtc_class_ops tps65910_rtc_ops = {
+ .read_time = tps65910_rtc_readtime,
+ //.set_mmss = tps65910_rtc_set_mmss,
+ .set_time = tps65910_rtc_set_time,
+ .read_alarm = tps65910_rtc_readalarm,
+ .set_alarm = tps65910_rtc_setalarm,
+ .alarm_irq_enable = tps65910_rtc_alarm_irq_enable,
+ //.update_irq_enable = tps65910_rtc_update_irq_enable,
+ //.irq_set_freq = tps65910_rtc_irq_set_freq,
+};
+
+#ifdef CONFIG_PM
+/* Turn off the alarm if it should not be a wake source. */
+static int tps65910_rtc_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(&pdev->dev);
+ int ret;
+
+ if (tps65910_rtc->alarm_enabled && device_may_wakeup(&pdev->dev))
+ ret = tps65910_rtc_start_alarm(tps65910_rtc);
+ else
+ ret = tps65910_rtc_stop_alarm(tps65910_rtc);
+
+ if (ret != 0)
+ dev_err(&pdev->dev, "Failed to update RTC alarm: %d\n", ret);
+
+ return 0;
+}
+
+/* Enable the alarm if it should be enabled (in case it was disabled to
+ * prevent use as a wake source).
+ */
+static int tps65910_rtc_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(&pdev->dev);
+ int ret;
+
+ if (tps65910_rtc->alarm_enabled) {
+ ret = tps65910_rtc_start_alarm(tps65910_rtc);
+ if (ret != 0)
+ dev_err(&pdev->dev,
+ "Failed to restart RTC alarm: %d\n", ret);
+ }
+
+ return 0;
+}
+
+/* Unconditionally disable the alarm */
+static int tps65910_rtc_freeze(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(&pdev->dev);
+ int ret;
+
+ ret = tps65910_rtc_stop_alarm(tps65910_rtc);
+ if (ret != 0)
+ dev_err(&pdev->dev, "Failed to stop RTC alarm: %d\n", ret);
+
+ return 0;
+}
+#else
+#define tps65910_rtc_suspend NULL
+#define tps65910_rtc_resume NULL
+#define tps65910_rtc_freeze NULL
+#endif
+
+struct platform_device *g_pdev;
+static int tps65910_rtc_probe(struct platform_device *pdev)
+{
+ struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
+ struct tps65910_rtc *tps65910_rtc;
+ int per_irq;
+ int alm_irq;
+ int ret = 0;
+ u8 rtc_ctl;
+
+ struct rtc_time tm;
+ struct rtc_time tm_def = { // 2012.1.1 12:00:00 Saturday
+ .tm_wday = 6,
+ .tm_year = 111,
+ .tm_mon = 0,
+ .tm_mday = 1,
+ .tm_hour = 12,
+ .tm_min = 0,
+ .tm_sec = 0,
+ };
+
+ tps65910_rtc = kzalloc(sizeof(*tps65910_rtc), GFP_KERNEL);
+ if (tps65910_rtc == NULL)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, tps65910_rtc);
+ tps65910_rtc->tps65910 = tps65910;
+ per_irq = tps65910->irq_base + TPS65910_IRQ_RTC_PERIOD;
+ alm_irq = tps65910->irq_base + TPS65910_IRQ_RTC_ALARM;
+
+ /* Take rtc out of reset */
+ ret = tps65910_reg_read(tps65910, TPS65910_DEVCTRL);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to read TPS65910_DEVCTRL: %d\n", ret);
+ return ret;
+ }
+
+ if(ret & BIT_RTC_PWDN)
+ {
+ rtc_ctl = ret & (~BIT_RTC_PWDN);
+
+ ret = tps65910_reg_write(tps65910, TPS65910_DEVCTRL, rtc_ctl);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to write RTC control: %d\n", ret);
+ return ret;
+ }
+ }
+
+ /*start rtc default*/
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_CTRL);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to read RTC control: %d\n", ret);
+ return ret;
+ }
+
+ if(!(ret & BIT_RTC_CTRL_REG_STOP_RTC_M))
+ {
+ rtc_ctl = ret | BIT_RTC_CTRL_REG_STOP_RTC_M;
+
+ ret = tps65910_reg_write(tps65910, TPS65910_RTC_CTRL, rtc_ctl);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to write RTC control: %d\n", ret);
+ return ret;
+ }
+ }
+
+ ret = tps65910_reg_read(tps65910, TPS65910_RTC_STATUS);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to read RTC status: %d\n", ret);
+ return ret;
+ }
+
+ /*set init time*/
+ ret = tps65910_rtc_readtime(&pdev->dev, &tm);
+ if (ret)
+ {
+ dev_err(&pdev->dev, "Failed to read RTC time\n");
+ return ret;
+ }
+
+ ret = rtc_valid_tm(&tm);
+ if (ret) {
+ dev_err(&pdev->dev,"invalid date/time and init time\n");
+ tps65910_rtc_set_time(&pdev->dev, &tm_def); // 2011-01-01 12:00:00
+ dev_info(&pdev->dev, "set RTC date/time %4d-%02d-%02d(%d) %02d:%02d:%02d\n",
+ 1900 + tm_def.tm_year, tm_def.tm_mon + 1, tm_def.tm_mday, tm_def.tm_wday,
+ tm_def.tm_hour, tm_def.tm_min, tm_def.tm_sec);
+ }
+
+ device_init_wakeup(&pdev->dev, 1);
+
+ tps65910_rtc->rtc = rtc_device_register("tps65910", &pdev->dev,
+ &tps65910_rtc_ops, THIS_MODULE);
+ if (IS_ERR(tps65910_rtc->rtc)) {
+ ret = PTR_ERR(tps65910_rtc->rtc);
+ goto err;
+ }
+
+ /*request rtc and alarm irq of tps65910*/
+ ret = request_threaded_irq(per_irq, NULL, tps65910_per_irq,
+ IRQF_TRIGGER_RISING, "RTC period",
+ tps65910_rtc);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request periodic IRQ %d: %d\n",
+ per_irq, ret);
+ }
+
+ ret = request_threaded_irq(alm_irq, NULL, tps65910_alm_irq,
+ IRQF_TRIGGER_RISING, "RTC alarm",
+ tps65910_rtc);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to request alarm IRQ %d: %d\n",
+ alm_irq, ret);
+ }
+
+ //for rtc irq test
+ //tps65910_set_bits(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS,
+ // BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+
+ g_pdev = pdev;
+
+ printk("%s:ok\n",__func__);
+
+ return 0;
+
+err:
+ kfree(tps65910_rtc);
+ return ret;
+}
+
+static int __devexit tps65910_rtc_remove(struct platform_device *pdev)
+{
+ struct tps65910_rtc *tps65910_rtc = platform_get_drvdata(pdev);
+ int per_irq = tps65910_rtc->tps65910->irq_base + TPS65910_IRQ_RTC_PERIOD;
+ int alm_irq = tps65910_rtc->tps65910->irq_base + TPS65910_IRQ_RTC_ALARM;
+
+ free_irq(alm_irq, tps65910_rtc);
+ free_irq(per_irq, tps65910_rtc);
+ rtc_device_unregister(tps65910_rtc->rtc);
+ kfree(tps65910_rtc);
+
+ return 0;
+}
+
+static const struct dev_pm_ops tps65910_rtc_pm_ops = {
+ .suspend = tps65910_rtc_suspend,
+ .resume = tps65910_rtc_resume,
+
+ .freeze = tps65910_rtc_freeze,
+ .thaw = tps65910_rtc_resume,
+ .restore = tps65910_rtc_resume,
+
+ .poweroff = tps65910_rtc_suspend,
+};
+
+static struct platform_driver tps65910_rtc_driver = {
+ .probe = tps65910_rtc_probe,
+ .remove = __devexit_p(tps65910_rtc_remove),
+ .driver = {
+ .name = "tps65910-rtc",
+ .pm = &tps65910_rtc_pm_ops,
+ },
+};
+
+static ssize_t rtc_tps65910_test_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *offset)
+{
+ char nr_buf[8];
+ int nr = 0, ret;
+ struct platform_device *pdev;
+ struct rtc_time tm;
+
+ if(count > 3)
+ return -EFAULT;
+ ret = copy_from_user(nr_buf, buf, count);
+ if(ret < 0)
+ return -EFAULT;
+
+ sscanf(nr_buf, "%d", &nr);
+ if(nr >= 2 || nr < 0)
+ {
+ printk("%s:data is error\n",__func__);
+ return -EFAULT;
+ }
+
+ if(!g_pdev)
+ return -EFAULT;
+ else
+ pdev = g_pdev;
+
+ if(nr == 0)
+ {
+ tm.tm_wday = 6;
+ tm.tm_year = 111;
+ tm.tm_mon = 0;
+ tm.tm_mday = 1;
+ tm.tm_hour = 12;
+ tm.tm_min = 0;
+ tm.tm_sec = 0;
+
+ ret = tps65910_rtc_set_time(&pdev->dev, &tm); // 2011-01-01 12:00:00
+ if (ret)
+ {
+ dev_err(&pdev->dev, "Failed to set RTC time\n");
+ return -EFAULT;
+ }
+
+ }
+
+ /*set init time*/
+ ret = tps65910_rtc_readtime(&pdev->dev, &tm);
+ if (ret)
+ dev_err(&pdev->dev, "Failed to read RTC time\n");
+ else
+ dev_info(&pdev->dev, "RTC date/time %4d-%02d-%02d(%d) %02d:%02d:%02d\n",
+ 1900 + tm.tm_year, tm.tm_mon + 1, tm.tm_mday, tm.tm_wday,
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
+
+ if(!ret)
+ printk("%s:ok\n",__func__);
+ else
+ printk("%s:error\n",__func__);
+
+ return count;
+}
+
+static const struct file_operations rtc_tps65910_test_fops = {
+ .write = rtc_tps65910_test_write,
+};
+
+static struct miscdevice rtc_tps65910_test_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "rtc_tps65910_test",
+ .fops = &rtc_tps65910_test_fops,
+};
+
+
+static int __init tps65910_rtc_init(void)
+{
+ misc_register(&rtc_tps65910_test_misc);
+ return platform_driver_register(&tps65910_rtc_driver);
+}
+subsys_initcall_sync(tps65910_rtc_init);
+
+static void __exit tps65910_rtc_exit(void)
+{
+ misc_deregister(&rtc_tps65910_test_misc);
+ platform_driver_unregister(&tps65910_rtc_driver);
+}
+module_exit(tps65910_rtc_exit);
+
+MODULE_DESCRIPTION("RTC driver for the tps65910 series PMICs");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:tps65910-rtc");
projects / firefly-linux-kernel-4.4.55.git / commitdiff