+++ /dev/null
-From c6890cadc2129a07d69f3dcbfca66522c27b8069 Mon Sep 17 00:00:00 2001
-From: Carlo Caione <carlo.caione@gmail.com>
-Date: Sat, 16 Nov 2013 18:33:54 +0100
-Subject: [PATCH] ARM: sun4i/sun7i: RTC driver
-
-This patch introduces the driver for the RTC in the Allwinner A10 and
-A20 SoCs.
-
-Signed-off-by: Carlo Caione <carlo.caione@gmail.com>
-Acked-by: Alessandro Zummo <a.zummo@towertech.it>
-Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
----
- drivers/rtc/Kconfig | 7 +
- drivers/rtc/Makefile | 1 +
- drivers/rtc/rtc-sunxi.c | 523 ++++++++++++++++++++++++++++++++++++++++++++++++
- 3 files changed, 531 insertions(+)
- create mode 100644 drivers/rtc/rtc-sunxi.c
-
---- a/drivers/rtc/Kconfig
-+++ b/drivers/rtc/Kconfig
-@@ -1122,6 +1122,13 @@ config RTC_DRV_SUN4V
- If you say Y here you will get support for the Hypervisor
- based RTC on SUN4V systems.
-
-+config RTC_DRV_SUNXI
-+ tristate "Allwinner sun4i/sun7i RTC"
-+ depends on ARCH_SUNXI
-+ help
-+ If you say Y here you will get support for the RTC found on
-+ Allwinner A10/A20.
-+
- config RTC_DRV_STARFIRE
- bool "Starfire RTC"
- depends on SPARC64
---- a/drivers/rtc/Makefile
-+++ b/drivers/rtc/Makefile
-@@ -119,6 +119,7 @@ obj-$(CONFIG_RTC_DRV_STARFIRE) += rtc-st
- obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o
- obj-$(CONFIG_RTC_DRV_STMP) += rtc-stmp3xxx.o
- obj-$(CONFIG_RTC_DRV_SUN4V) += rtc-sun4v.o
-+obj-$(CONFIG_RTC_DRV_SUNXI) += rtc-sunxi.o
- obj-$(CONFIG_RTC_DRV_TEGRA) += rtc-tegra.o
- obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
- obj-$(CONFIG_RTC_DRV_TILE) += rtc-tile.o
---- /dev/null
-+++ b/drivers/rtc/rtc-sunxi.c
-@@ -0,0 +1,523 @@
-+/*
-+ * An RTC driver for Allwinner A10/A20
-+ *
-+ * Copyright (c) 2013, Carlo Caione <carlo.caione@gmail.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.
-+ *
-+ * This program is distributed in the hope that it will be useful, but WITHOUT
-+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
-+ * more details.
-+ *
-+ * You should have received a copy of the GNU General Public License along
-+ * with this program; if not, write to the Free Software Foundation, Inc.,
-+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-+ */
-+
-+#include <linux/delay.h>
-+#include <linux/err.h>
-+#include <linux/fs.h>
-+#include <linux/init.h>
-+#include <linux/interrupt.h>
-+#include <linux/io.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/of.h>
-+#include <linux/of_address.h>
-+#include <linux/of_device.h>
-+#include <linux/platform_device.h>
-+#include <linux/rtc.h>
-+#include <linux/types.h>
-+
-+#define SUNXI_LOSC_CTRL 0x0000
-+#define SUNXI_LOSC_CTRL_RTC_HMS_ACC BIT(8)
-+#define SUNXI_LOSC_CTRL_RTC_YMD_ACC BIT(7)
-+
-+#define SUNXI_RTC_YMD 0x0004
-+
-+#define SUNXI_RTC_HMS 0x0008
-+
-+#define SUNXI_ALRM_DHMS 0x000c
-+
-+#define SUNXI_ALRM_EN 0x0014
-+#define SUNXI_ALRM_EN_CNT_EN BIT(8)
-+
-+#define SUNXI_ALRM_IRQ_EN 0x0018
-+#define SUNXI_ALRM_IRQ_EN_CNT_IRQ_EN BIT(0)
-+
-+#define SUNXI_ALRM_IRQ_STA 0x001c
-+#define SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND BIT(0)
-+
-+#define SUNXI_MASK_DH 0x0000001f
-+#define SUNXI_MASK_SM 0x0000003f
-+#define SUNXI_MASK_M 0x0000000f
-+#define SUNXI_MASK_LY 0x00000001
-+#define SUNXI_MASK_D 0x00000ffe
-+#define SUNXI_MASK_M 0x0000000f
-+
-+#define SUNXI_GET(x, mask, shift) (((x) & ((mask) << (shift))) \
-+ >> (shift))
-+
-+#define SUNXI_SET(x, mask, shift) (((x) & (mask)) << (shift))
-+
-+/*
-+ * Get date values
-+ */
-+#define SUNXI_DATE_GET_DAY_VALUE(x) SUNXI_GET(x, SUNXI_MASK_DH, 0)
-+#define SUNXI_DATE_GET_MON_VALUE(x) SUNXI_GET(x, SUNXI_MASK_M, 8)
-+#define SUNXI_DATE_GET_YEAR_VALUE(x, mask) SUNXI_GET(x, mask, 16)
-+
-+/*
-+ * Get time values
-+ */
-+#define SUNXI_TIME_GET_SEC_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 0)
-+#define SUNXI_TIME_GET_MIN_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 8)
-+#define SUNXI_TIME_GET_HOUR_VALUE(x) SUNXI_GET(x, SUNXI_MASK_DH, 16)
-+
-+/*
-+ * Get alarm values
-+ */
-+#define SUNXI_ALRM_GET_SEC_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 0)
-+#define SUNXI_ALRM_GET_MIN_VALUE(x) SUNXI_GET(x, SUNXI_MASK_SM, 8)
-+#define SUNXI_ALRM_GET_HOUR_VALUE(x) SUNXI_GET(x, SUNXI_MASK_DH, 16)
-+
-+/*
-+ * Set date values
-+ */
-+#define SUNXI_DATE_SET_DAY_VALUE(x) SUNXI_DATE_GET_DAY_VALUE(x)
-+#define SUNXI_DATE_SET_MON_VALUE(x) SUNXI_SET(x, SUNXI_MASK_M, 8)
-+#define SUNXI_DATE_SET_YEAR_VALUE(x, mask) SUNXI_SET(x, mask, 16)
-+#define SUNXI_LEAP_SET_VALUE(x, shift) SUNXI_SET(x, SUNXI_MASK_LY, shift)
-+
-+/*
-+ * Set time values
-+ */
-+#define SUNXI_TIME_SET_SEC_VALUE(x) SUNXI_TIME_GET_SEC_VALUE(x)
-+#define SUNXI_TIME_SET_MIN_VALUE(x) SUNXI_SET(x, SUNXI_MASK_SM, 8)
-+#define SUNXI_TIME_SET_HOUR_VALUE(x) SUNXI_SET(x, SUNXI_MASK_DH, 16)
-+
-+/*
-+ * Set alarm values
-+ */
-+#define SUNXI_ALRM_SET_SEC_VALUE(x) SUNXI_ALRM_GET_SEC_VALUE(x)
-+#define SUNXI_ALRM_SET_MIN_VALUE(x) SUNXI_SET(x, SUNXI_MASK_SM, 8)
-+#define SUNXI_ALRM_SET_HOUR_VALUE(x) SUNXI_SET(x, SUNXI_MASK_DH, 16)
-+#define SUNXI_ALRM_SET_DAY_VALUE(x) SUNXI_SET(x, SUNXI_MASK_D, 21)
-+
-+/*
-+ * Time unit conversions
-+ */
-+#define SEC_IN_MIN 60
-+#define SEC_IN_HOUR (60 * SEC_IN_MIN)
-+#define SEC_IN_DAY (24 * SEC_IN_HOUR)
-+
-+/*
-+ * The year parameter passed to the driver is usually an offset relative to
-+ * the year 1900. This macro is used to convert this offset to another one
-+ * relative to the minimum year allowed by the hardware.
-+ */
-+#define SUNXI_YEAR_OFF(x) ((x)->min - 1900)
-+
-+/*
-+ * min and max year are arbitrary set considering the limited range of the
-+ * hardware register field
-+ */
-+struct sunxi_rtc_data_year {
-+ unsigned int min; /* min year allowed */
-+ unsigned int max; /* max year allowed */
-+ unsigned int mask; /* mask for the year field */
-+ unsigned char leap_shift; /* bit shift to get the leap year */
-+};
-+
-+static struct sunxi_rtc_data_year data_year_param[] = {
-+ [0] = {
-+ .min = 2010,
-+ .max = 2073,
-+ .mask = 0x3f,
-+ .leap_shift = 22,
-+ },
-+ [1] = {
-+ .min = 1970,
-+ .max = 2225,
-+ .mask = 0xff,
-+ .leap_shift = 24,
-+ },
-+};
-+
-+struct sunxi_rtc_dev {
-+ struct rtc_device *rtc;
-+ struct device *dev;
-+ struct sunxi_rtc_data_year *data_year;
-+ void __iomem *base;
-+ int irq;
-+};
-+
-+static irqreturn_t sunxi_rtc_alarmirq(int irq, void *id)
-+{
-+ struct sunxi_rtc_dev *chip = (struct sunxi_rtc_dev *) id;
-+ u32 val;
-+
-+ val = readl(chip->base + SUNXI_ALRM_IRQ_STA);
-+
-+ if (val & SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND) {
-+ val |= SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND;
-+ writel(val, chip->base + SUNXI_ALRM_IRQ_STA);
-+
-+ rtc_update_irq(chip->rtc, 1, RTC_AF | RTC_IRQF);
-+
-+ return IRQ_HANDLED;
-+ }
-+
-+ return IRQ_NONE;
-+}
-+
-+static void sunxi_rtc_setaie(int to, struct sunxi_rtc_dev *chip)
-+{
-+ u32 alrm_val = 0;
-+ u32 alrm_irq_val = 0;
-+
-+ if (to) {
-+ alrm_val = readl(chip->base + SUNXI_ALRM_EN);
-+ alrm_val |= SUNXI_ALRM_EN_CNT_EN;
-+
-+ alrm_irq_val = readl(chip->base + SUNXI_ALRM_IRQ_EN);
-+ alrm_irq_val |= SUNXI_ALRM_IRQ_EN_CNT_IRQ_EN;
-+ } else {
-+ writel(SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND,
-+ chip->base + SUNXI_ALRM_IRQ_STA);
-+ }
-+
-+ writel(alrm_val, chip->base + SUNXI_ALRM_EN);
-+ writel(alrm_irq_val, chip->base + SUNXI_ALRM_IRQ_EN);
-+}
-+
-+static int sunxi_rtc_getalarm(struct device *dev, struct rtc_wkalrm *wkalrm)
-+{
-+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
-+ struct rtc_time *alrm_tm = &wkalrm->time;
-+ u32 alrm;
-+ u32 alrm_en;
-+ u32 date;
-+
-+ alrm = readl(chip->base + SUNXI_ALRM_DHMS);
-+ date = readl(chip->base + SUNXI_RTC_YMD);
-+
-+ alrm_tm->tm_sec = SUNXI_ALRM_GET_SEC_VALUE(alrm);
-+ alrm_tm->tm_min = SUNXI_ALRM_GET_MIN_VALUE(alrm);
-+ alrm_tm->tm_hour = SUNXI_ALRM_GET_HOUR_VALUE(alrm);
-+
-+ alrm_tm->tm_mday = SUNXI_DATE_GET_DAY_VALUE(date);
-+ alrm_tm->tm_mon = SUNXI_DATE_GET_MON_VALUE(date);
-+ alrm_tm->tm_year = SUNXI_DATE_GET_YEAR_VALUE(date,
-+ chip->data_year->mask);
-+
-+ alrm_tm->tm_mon -= 1;
-+
-+ /*
-+ * switch from (data_year->min)-relative offset to
-+ * a (1900)-relative one
-+ */
-+ alrm_tm->tm_year += SUNXI_YEAR_OFF(chip->data_year);
-+
-+ alrm_en = readl(chip->base + SUNXI_ALRM_IRQ_EN);
-+ if (alrm_en & SUNXI_ALRM_EN_CNT_EN)
-+ wkalrm->enabled = 1;
-+
-+ return 0;
-+}
-+
-+static int sunxi_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
-+{
-+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
-+ u32 date, time;
-+
-+ /*
-+ * read again in case it changes
-+ */
-+ do {
-+ date = readl(chip->base + SUNXI_RTC_YMD);
-+ time = readl(chip->base + SUNXI_RTC_HMS);
-+ } while ((date != readl(chip->base + SUNXI_RTC_YMD)) ||
-+ (time != readl(chip->base + SUNXI_RTC_HMS)));
-+
-+ rtc_tm->tm_sec = SUNXI_TIME_GET_SEC_VALUE(time);
-+ rtc_tm->tm_min = SUNXI_TIME_GET_MIN_VALUE(time);
-+ rtc_tm->tm_hour = SUNXI_TIME_GET_HOUR_VALUE(time);
-+
-+ rtc_tm->tm_mday = SUNXI_DATE_GET_DAY_VALUE(date);
-+ rtc_tm->tm_mon = SUNXI_DATE_GET_MON_VALUE(date);
-+ rtc_tm->tm_year = SUNXI_DATE_GET_YEAR_VALUE(date,
-+ chip->data_year->mask);
-+
-+ rtc_tm->tm_mon -= 1;
-+
-+ /*
-+ * switch from (data_year->min)-relative offset to
-+ * a (1900)-relative one
-+ */
-+ rtc_tm->tm_year += SUNXI_YEAR_OFF(chip->data_year);
-+
-+ return rtc_valid_tm(rtc_tm);
-+}
-+
-+static int sunxi_rtc_setalarm(struct device *dev, struct rtc_wkalrm *wkalrm)
-+{
-+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
-+ struct rtc_time *alrm_tm = &wkalrm->time;
-+ struct rtc_time tm_now;
-+ u32 alrm = 0;
-+ unsigned long time_now = 0;
-+ unsigned long time_set = 0;
-+ unsigned long time_gap = 0;
-+ unsigned long time_gap_day = 0;
-+ unsigned long time_gap_hour = 0;
-+ unsigned long time_gap_min = 0;
-+ int ret = 0;
-+
-+ ret = sunxi_rtc_gettime(dev, &tm_now);
-+ if (ret < 0) {
-+ dev_err(dev, "Error in getting time\n");
-+ return -EINVAL;
-+ }
-+
-+ rtc_tm_to_time(alrm_tm, &time_set);
-+ rtc_tm_to_time(&tm_now, &time_now);
-+ if (time_set <= time_now) {
-+ dev_err(dev, "Date to set in the past\n");
-+ return -EINVAL;
-+ }
-+
-+ time_gap = time_set - time_now;
-+ time_gap_day = time_gap / SEC_IN_DAY;
-+ time_gap -= time_gap_day * SEC_IN_DAY;
-+ time_gap_hour = time_gap / SEC_IN_HOUR;
-+ time_gap -= time_gap_hour * SEC_IN_HOUR;
-+ time_gap_min = time_gap / SEC_IN_MIN;
-+ time_gap -= time_gap_min * SEC_IN_MIN;
-+
-+ if (time_gap_day > 255) {
-+ dev_err(dev, "Day must be in the range 0 - 255\n");
-+ return -EINVAL;
-+ }
-+
-+ sunxi_rtc_setaie(0, chip);
-+ writel(0, chip->base + SUNXI_ALRM_DHMS);
-+ usleep_range(100, 300);
-+
-+ alrm = SUNXI_ALRM_SET_SEC_VALUE(time_gap) |
-+ SUNXI_ALRM_SET_MIN_VALUE(time_gap_min) |
-+ SUNXI_ALRM_SET_HOUR_VALUE(time_gap_hour) |
-+ SUNXI_ALRM_SET_DAY_VALUE(time_gap_day);
-+ writel(alrm, chip->base + SUNXI_ALRM_DHMS);
-+
-+ writel(0, chip->base + SUNXI_ALRM_IRQ_EN);
-+ writel(SUNXI_ALRM_IRQ_EN_CNT_IRQ_EN, chip->base + SUNXI_ALRM_IRQ_EN);
-+
-+ sunxi_rtc_setaie(wkalrm->enabled, chip);
-+
-+ return 0;
-+}
-+
-+static int sunxi_rtc_wait(struct sunxi_rtc_dev *chip, int offset,
-+ unsigned int mask, unsigned int ms_timeout)
-+{
-+ const unsigned long timeout = jiffies + msecs_to_jiffies(ms_timeout);
-+ u32 reg;
-+
-+ do {
-+ reg = readl(chip->base + offset);
-+ reg &= mask;
-+
-+ if (reg == mask)
-+ return 0;
-+
-+ } while (time_before(jiffies, timeout));
-+
-+ return -ETIMEDOUT;
-+}
-+
-+static int sunxi_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
-+{
-+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
-+ u32 date = 0;
-+ u32 time = 0;
-+ int year;
-+
-+ /*
-+ * the input rtc_tm->tm_year is the offset relative to 1900. We use
-+ * the SUNXI_YEAR_OFF macro to rebase it with respect to the min year
-+ * allowed by the hardware
-+ */
-+
-+ year = rtc_tm->tm_year + 1900;
-+ if (year < chip->data_year->min || year > chip->data_year->max) {
-+ dev_err(dev, "rtc only supports year in range %d - %d\n",
-+ chip->data_year->min, chip->data_year->max);
-+ return -EINVAL;
-+ }
-+
-+ rtc_tm->tm_year -= SUNXI_YEAR_OFF(chip->data_year);
-+ rtc_tm->tm_mon += 1;
-+
-+ date = SUNXI_DATE_SET_DAY_VALUE(rtc_tm->tm_mday) |
-+ SUNXI_DATE_SET_MON_VALUE(rtc_tm->tm_mon) |
-+ SUNXI_DATE_SET_YEAR_VALUE(rtc_tm->tm_year,
-+ chip->data_year->mask);
-+
-+ if (is_leap_year(year))
-+ date |= SUNXI_LEAP_SET_VALUE(1, chip->data_year->leap_shift);
-+
-+ time = SUNXI_TIME_SET_SEC_VALUE(rtc_tm->tm_sec) |
-+ SUNXI_TIME_SET_MIN_VALUE(rtc_tm->tm_min) |
-+ SUNXI_TIME_SET_HOUR_VALUE(rtc_tm->tm_hour);
-+
-+ writel(0, chip->base + SUNXI_RTC_HMS);
-+ writel(0, chip->base + SUNXI_RTC_YMD);
-+
-+ writel(time, chip->base + SUNXI_RTC_HMS);
-+
-+ /*
-+ * After writing the RTC HH-MM-SS register, the
-+ * SUNXI_LOSC_CTRL_RTC_HMS_ACC bit is set and it will not
-+ * be cleared until the real writing operation is finished
-+ */
-+
-+ if (sunxi_rtc_wait(chip, SUNXI_LOSC_CTRL,
-+ SUNXI_LOSC_CTRL_RTC_HMS_ACC, 50)) {
-+ dev_err(dev, "Failed to set rtc time.\n");
-+ return -1;
-+ }
-+
-+ writel(date, chip->base + SUNXI_RTC_YMD);
-+
-+ /*
-+ * After writing the RTC YY-MM-DD register, the
-+ * SUNXI_LOSC_CTRL_RTC_YMD_ACC bit is set and it will not
-+ * be cleared until the real writing operation is finished
-+ */
-+
-+ if (sunxi_rtc_wait(chip, SUNXI_LOSC_CTRL,
-+ SUNXI_LOSC_CTRL_RTC_YMD_ACC, 50)) {
-+ dev_err(dev, "Failed to set rtc time.\n");
-+ return -1;
-+ }
-+
-+ return 0;
-+}
-+
-+static int sunxi_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled)
-+{
-+ struct sunxi_rtc_dev *chip = dev_get_drvdata(dev);
-+
-+ if (!enabled)
-+ sunxi_rtc_setaie(enabled, chip);
-+
-+ return 0;
-+}
-+
-+static const struct rtc_class_ops sunxi_rtc_ops = {
-+ .read_time = sunxi_rtc_gettime,
-+ .set_time = sunxi_rtc_settime,
-+ .read_alarm = sunxi_rtc_getalarm,
-+ .set_alarm = sunxi_rtc_setalarm,
-+ .alarm_irq_enable = sunxi_rtc_alarm_irq_enable
-+};
-+
-+static const struct of_device_id sunxi_rtc_dt_ids[] = {
-+ { .compatible = "allwinner,sun4i-rtc", .data = &data_year_param[0] },
-+ { .compatible = "allwinner,sun7i-a20-rtc", .data = &data_year_param[1] },
-+ { /* sentinel */ },
-+};
-+MODULE_DEVICE_TABLE(of, sunxi_rtc_dt_ids);
-+
-+static int sunxi_rtc_probe(struct platform_device *pdev)
-+{
-+ struct sunxi_rtc_dev *chip;
-+ struct resource *res;
-+ const struct of_device_id *of_id;
-+ int ret;
-+
-+ chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
-+ if (!chip)
-+ return -ENOMEM;
-+
-+ platform_set_drvdata(pdev, chip);
-+ chip->dev = &pdev->dev;
-+
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ chip->base = devm_ioremap_resource(&pdev->dev, res);
-+ if (IS_ERR(chip->base))
-+ return PTR_ERR(chip->base);
-+
-+ chip->irq = platform_get_irq(pdev, 0);
-+ if (chip->irq < 0) {
-+ dev_err(&pdev->dev, "No IRQ resource\n");
-+ return chip->irq;
-+ }
-+ ret = devm_request_irq(&pdev->dev, chip->irq, sunxi_rtc_alarmirq,
-+ 0, dev_name(&pdev->dev), chip);
-+ if (ret) {
-+ dev_err(&pdev->dev, "Could not request IRQ\n");
-+ return ret;
-+ }
-+
-+ of_id = of_match_device(sunxi_rtc_dt_ids, &pdev->dev);
-+ if (!of_id) {
-+ dev_err(&pdev->dev, "Unable to setup RTC data\n");
-+ return -ENODEV;
-+ }
-+ chip->data_year = (struct sunxi_rtc_data_year *) of_id->data;
-+
-+ /* clear the alarm count value */
-+ writel(0, chip->base + SUNXI_ALRM_DHMS);
-+
-+ /* disable alarm, not generate irq pending */
-+ writel(0, chip->base + SUNXI_ALRM_EN);
-+
-+ /* disable alarm week/cnt irq, unset to cpu */
-+ writel(0, chip->base + SUNXI_ALRM_IRQ_EN);
-+
-+ /* clear alarm week/cnt irq pending */
-+ writel(SUNXI_ALRM_IRQ_STA_CNT_IRQ_PEND, chip->base +
-+ SUNXI_ALRM_IRQ_STA);
-+
-+ chip->rtc = rtc_device_register("rtc-sunxi", &pdev->dev,
-+ &sunxi_rtc_ops, THIS_MODULE);
-+ if (IS_ERR(chip->rtc)) {
-+ dev_err(&pdev->dev, "unable to register device\n");
-+ return PTR_ERR(chip->rtc);
-+ }
-+
-+ dev_info(&pdev->dev, "RTC enabled\n");
-+
-+ return 0;
-+}
-+
-+static int sunxi_rtc_remove(struct platform_device *pdev)
-+{
-+ struct sunxi_rtc_dev *chip = platform_get_drvdata(pdev);
-+
-+ rtc_device_unregister(chip->rtc);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver sunxi_rtc_driver = {
-+ .probe = sunxi_rtc_probe,
-+ .remove = sunxi_rtc_remove,
-+ .driver = {
-+ .name = "sunxi-rtc",
-+ .owner = THIS_MODULE,
-+ .of_match_table = sunxi_rtc_dt_ids,
-+ },
-+};
-+
-+module_platform_driver(sunxi_rtc_driver);
-+
-+MODULE_DESCRIPTION("sunxi RTC driver");
-+MODULE_AUTHOR("Carlo Caione <carlo.caione@gmail.com>");
-+MODULE_LICENSE("GPL");
projects / openwrt / svn-archive / archive.git / blobdiff