diff options
Diffstat (limited to 'target/linux/sunxi/patches-3.13/140-sun47i-rtc-driver.patch')
| -rw-r--r-- | target/linux/sunxi/patches-3.13/140-sun47i-rtc-driver.patch | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/target/linux/sunxi/patches-3.13/140-sun47i-rtc-driver.patch b/target/linux/sunxi/patches-3.13/140-sun47i-rtc-driver.patch deleted file mode 100644 index 3baa9df..0000000 --- a/target/linux/sunxi/patches-3.13/140-sun47i-rtc-driver.patch +++ /dev/null @@ -1,570 +0,0 @@ -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"); |