diff options
Diffstat (limited to 'target/linux/generic/patches-2.6.31/700-rtc7301.patch')
| -rw-r--r-- | target/linux/generic/patches-2.6.31/700-rtc7301.patch | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/target/linux/generic/patches-2.6.31/700-rtc7301.patch b/target/linux/generic/patches-2.6.31/700-rtc7301.patch deleted file mode 100644 index 6e66654400..0000000000 --- a/target/linux/generic/patches-2.6.31/700-rtc7301.patch +++ /dev/null @@ -1,250 +0,0 @@ ---- a/drivers/rtc/Kconfig -+++ b/drivers/rtc/Kconfig -@@ -535,6 +535,15 @@ config RTC_DRV_PCF50633 - If you say yes here you get support for the RTC subsystem of the - NXP PCF50633 used in embedded systems. - -+config RTC_DRV_RTC7301 -+ tristate "Epson RTC-7301 SF/DG" -+ help -+ If you say Y here you will get support for the -+ Epson RTC-7301 SF/DG RTC chips. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-7301. -+ - comment "on-CPU RTC drivers" - - config RTC_DRV_OMAP ---- a/drivers/rtc/Makefile -+++ b/drivers/rtc/Makefile -@@ -62,6 +62,7 @@ obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701 - obj-$(CONFIG_RTC_DRV_RS5C313) += rtc-rs5c313.o - obj-$(CONFIG_RTC_DRV_RS5C348) += rtc-rs5c348.o - obj-$(CONFIG_RTC_DRV_RS5C372) += rtc-rs5c372.o -+obj-$(CONFIG_RTC_DRV_RTC7301) += rtc-rtc7301.o - obj-$(CONFIG_RTC_DRV_RX8025) += rtc-rx8025.o - obj-$(CONFIG_RTC_DRV_RX8581) += rtc-rx8581.o - obj-$(CONFIG_RTC_DRV_S35390A) += rtc-s35390a.o ---- /dev/null -+++ b/drivers/rtc/rtc-rtc7301.c -@@ -0,0 +1,219 @@ -+/* -+ * Driver for Epson RTC-7301SF/DG -+ * -+ * Copyright (C) 2009 Jose Vasconcellos -+ * -+ * This program is free software; you can redistribute it and/or modify -+ * it under the terms of the GNU General Public License version 2 as -+ * published by the Free Software Foundation. -+ */ -+ -+#include <linux/module.h> -+#include <linux/rtc.h> -+#include <linux/platform_device.h> -+#include <linux/io.h> -+#include <linux/delay.h> -+#include <linux/bcd.h> -+ -+#define RTC_NAME "rtc7301" -+#define RTC_VERSION "0.1" -+ -+/* Epson RTC-7301 register addresses */ -+#define RTC7301_SEC 0x00 -+#define RTC7301_SEC10 0x01 -+#define RTC7301_MIN 0x02 -+#define RTC7301_MIN10 0x03 -+#define RTC7301_HOUR 0x04 -+#define RTC7301_HOUR10 0x05 -+#define RTC7301_WEEKDAY 0x06 -+#define RTC7301_DAY 0x07 -+#define RTC7301_DAY10 0x08 -+#define RTC7301_MON 0x09 -+#define RTC7301_MON10 0x0A -+#define RTC7301_YEAR 0x0B -+#define RTC7301_YEAR10 0x0C -+#define RTC7301_YEAR100 0x0D -+#define RTC7301_YEAR1000 0x0E -+#define RTC7301_CTRLREG 0x0F -+ -+static uint8_t __iomem *rtc7301_base; -+ -+#define read_reg(offset) (readb(rtc7301_base + offset) & 0xf) -+#define write_reg(offset, data) writeb(data, rtc7301_base + (offset)) -+ -+#define rtc7301_isbusy() (read_reg(RTC7301_CTRLREG) & 1) -+ -+static void rtc7301_init_settings(void) -+{ -+ int i; -+ -+ write_reg(RTC7301_CTRLREG, 2); -+ write_reg(RTC7301_YEAR1000, 2); -+ udelay(122); -+ -+ /* bank 1 */ -+ write_reg(RTC7301_CTRLREG, 6); -+ for (i=0; i<15; i++) -+ write_reg(i, 0); -+ -+ /* bank 2 */ -+ write_reg(RTC7301_CTRLREG, 14); -+ for (i=0; i<15; i++) -+ write_reg(i, 0); -+ write_reg(RTC7301_CTRLREG, 0); -+} -+ -+static int rtc7301_get_datetime(struct device *dev, struct rtc_time *dt) -+{ -+ int cnt; -+ uint8_t buf[16]; -+ -+ cnt = 0; -+ while (rtc7301_isbusy()) { -+ udelay(244); -+ if (cnt++ > 100) { -+ dev_err(dev, "%s: timeout error %x\n", __func__, rtc7301_base[RTC7301_CTRLREG]); -+ return -EIO; -+ } -+ } -+ -+ for (cnt=0; cnt<16; cnt++) -+ buf[cnt] = read_reg(cnt); -+ -+ if (buf[RTC7301_SEC10] & 8) { -+ dev_err(dev, "%s: RTC not set\n", __func__); -+ return -EINVAL; -+ } -+ -+ memset(dt, 0, sizeof(*dt)); -+ -+ dt->tm_sec = buf[RTC7301_SEC] + buf[RTC7301_SEC10]*10; -+ dt->tm_min = buf[RTC7301_MIN] + buf[RTC7301_MIN10]*10; -+ dt->tm_hour = buf[RTC7301_HOUR] + buf[RTC7301_HOUR10]*10; -+ -+ dt->tm_mday = buf[RTC7301_DAY] + buf[RTC7301_DAY10]*10; -+ dt->tm_mon = buf[RTC7301_MON] + buf[RTC7301_MON10]*10 - 1; -+ dt->tm_year = buf[RTC7301_YEAR] + buf[RTC7301_YEAR10]*10 + -+ buf[RTC7301_YEAR100]*100 + -+ ((buf[RTC7301_YEAR1000] & 3)*1000) - 1900; -+ -+ /* the rtc device may contain illegal values on power up -+ * according to the data sheet. make sure they are valid. -+ */ -+ -+ return rtc_valid_tm(dt); -+} -+ -+static int rtc7301_set_datetime(struct device *dev, struct rtc_time *dt) -+{ -+ int data; -+ -+ data = dt->tm_year + 1900; -+ if (data >= 2100 || data < 1900) -+ return -EINVAL; -+ -+ write_reg(RTC7301_CTRLREG, 2); -+ udelay(122); -+ -+ data = bin2bcd(dt->tm_sec); -+ write_reg(RTC7301_SEC, data); -+ write_reg(RTC7301_SEC10, (data >> 4)); -+ -+ data = bin2bcd(dt->tm_min); -+ write_reg(RTC7301_MIN, data ); -+ write_reg(RTC7301_MIN10, (data >> 4)); -+ -+ data = bin2bcd(dt->tm_hour); -+ write_reg(RTC7301_HOUR, data); -+ write_reg(RTC7301_HOUR10, (data >> 4)); -+ -+ data = bin2bcd(dt->tm_mday); -+ write_reg(RTC7301_DAY, data); -+ write_reg(RTC7301_DAY10, (data>> 4)); -+ -+ data = bin2bcd(dt->tm_mon + 1); -+ write_reg(RTC7301_MON, data); -+ write_reg(RTC7301_MON10, (data >> 4)); -+ -+ data = bin2bcd(dt->tm_year % 100); -+ write_reg(RTC7301_YEAR, data); -+ write_reg(RTC7301_YEAR10, (data >> 4)); -+ data = bin2bcd((1900 + dt->tm_year) / 100); -+ write_reg(RTC7301_YEAR100, data); -+ -+ data = bin2bcd(dt->tm_wday); -+ write_reg(RTC7301_WEEKDAY, data); -+ -+ write_reg(RTC7301_CTRLREG, 0); -+ -+ return 0; -+} -+ -+static const struct rtc_class_ops rtc7301_rtc_ops = { -+ .read_time = rtc7301_get_datetime, -+ .set_time = rtc7301_set_datetime, -+}; -+ -+static int __devinit rtc7301_probe(struct platform_device *pdev) -+{ -+ struct rtc_device *rtc; -+ struct resource *res; -+ -+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); -+ if (!res) -+ return -ENOENT; -+ -+ rtc7301_base = ioremap_nocache(res->start, 0x1000 /*res->end - res->start + 1*/); -+ if (!rtc7301_base) -+ return -EINVAL; -+ -+ rtc = rtc_device_register(RTC_NAME, &pdev->dev, -+ &rtc7301_rtc_ops, THIS_MODULE); -+ if (IS_ERR(rtc)) { -+ iounmap(rtc7301_base); -+ return PTR_ERR(rtc); -+ } -+ -+ platform_set_drvdata(pdev, rtc); -+ -+ rtc7301_init_settings(); -+ return 0; -+} -+ -+static int __devexit rtc7301_remove(struct platform_device *pdev) -+{ -+ struct rtc_device *rtc = platform_get_drvdata(pdev); -+ -+ if (rtc) -+ rtc_device_unregister(rtc); -+ if (rtc7301_base) -+ iounmap(rtc7301_base); -+ return 0; -+} -+ -+static struct platform_driver rtc7301_driver = { -+ .driver = { -+ .name = RTC_NAME, -+ .owner = THIS_MODULE, -+ }, -+ .probe = rtc7301_probe, -+ .remove = __devexit_p(rtc7301_remove), -+}; -+ -+static __init int rtc7301_init(void) -+{ -+ return platform_driver_register(&rtc7301_driver); -+} -+module_init(rtc7301_init); -+ -+static __exit void rtc7301_exit(void) -+{ -+ platform_driver_unregister(&rtc7301_driver); -+} -+module_exit(rtc7301_exit); -+ -+MODULE_DESCRIPTION("Epson 7301 RTC driver"); -+MODULE_AUTHOR("Jose Vasconcellos <jvasco@verizon.net>"); -+MODULE_LICENSE("GPL"); -+MODULE_ALIAS("platform:" RTC_NAME); -+MODULE_VERSION(RTC_VERSION); |