diff options
Diffstat (limited to 'target/linux/generic/patches-4.1/841-rtc_pt7c4338.patch')
| -rw-r--r-- | target/linux/generic/patches-4.1/841-rtc_pt7c4338.patch | 247 |
1 files changed, 0 insertions, 247 deletions
diff --git a/target/linux/generic/patches-4.1/841-rtc_pt7c4338.patch b/target/linux/generic/patches-4.1/841-rtc_pt7c4338.patch deleted file mode 100644 index 5de1b87..0000000 --- a/target/linux/generic/patches-4.1/841-rtc_pt7c4338.patch +++ /dev/null @@ -1,247 +0,0 @@ ---- a/drivers/rtc/Kconfig -+++ b/drivers/rtc/Kconfig -@@ -596,6 +596,15 @@ config RTC_DRV_S5M - This driver can also be built as a module. If so, the module - will be called rtc-s5m. - -+config RTC_DRV_PT7C4338 -+ tristate "Pericom Technology Inc. PT7C4338 RTC" -+ help -+ If you say yes here you get support for the Pericom Technology -+ Inc. PT7C4338 RTC chip. -+ -+ This driver can also be built as a module. If so, the module -+ will be called rtc-pt7c4338. -+ - endif # I2C - - comment "SPI RTC drivers" ---- a/drivers/rtc/Makefile -+++ b/drivers/rtc/Makefile -@@ -112,6 +112,7 @@ obj-$(CONFIG_RTC_DRV_PL030) += rtc-pl030 - obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o - obj-$(CONFIG_RTC_DRV_PM8XXX) += rtc-pm8xxx.o - obj-$(CONFIG_RTC_DRV_PS3) += rtc-ps3.o -+obj-$(CONFIG_RTC_DRV_PT7C4338) += rtc-pt7c4338.o - obj-$(CONFIG_RTC_DRV_PUV3) += rtc-puv3.o - obj-$(CONFIG_RTC_DRV_PXA) += rtc-pxa.o - obj-$(CONFIG_RTC_DRV_R9701) += rtc-r9701.o ---- /dev/null -+++ b/drivers/rtc/rtc-pt7c4338.c -@@ -0,0 +1,216 @@ -+/* -+ * Copyright 2010 Freescale Semiconductor, Inc. -+ * -+ * Author: Priyanka Jain <Priyanka.Jain@freescale.com> -+ * -+ * See file CREDITS for list of people who contributed to this -+ * project. -+ * -+ * 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., 59 Temple Place, Suite 330, Boston, -+ * MA 02111-1307 USA -+ */ -+ -+/* -+ * This file provides Date & Time support (no alarms) for PT7C4338 chip. -+ * -+ * This file is based on drivers/rtc/rtc-ds1307.c -+ * -+ * PT7C4338 chip is manufactured by Pericom Technology Inc. -+ * It is a serial real-time clock which provides -+ * 1)Low-power clock/calendar. -+ * 2)Programmable square-wave output. -+ * It has 56 bytes of nonvolatile RAM. -+ */ -+ -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/slab.h> -+#include <linux/i2c.h> -+#include <linux/rtc.h> -+#include <linux/bcd.h> -+ -+/* RTC register addresses */ -+#define PT7C4338_REG_SECONDS 0x00 -+#define PT7C4338_REG_MINUTES 0x01 -+#define PT7C4338_REG_HOURS 0x02 -+#define PT7C4338_REG_AMPM 0x02 -+#define PT7C4338_REG_DAY 0x03 -+#define PT7C4338_REG_DATE 0x04 -+#define PT7C4338_REG_MONTH 0x05 -+#define PT7C4338_REG_YEAR 0x06 -+#define PT7C4338_REG_CTRL_STAT 0x07 -+ -+/* RTC second register address bit */ -+#define PT7C4338_SEC_BIT_CH 0x80 /*Clock Halt (in Register 0)*/ -+ -+/* RTC control and status register bits */ -+#define PT7C4338_CTRL_STAT_BIT_RS0 0x1 /*Rate select 0*/ -+#define PT7C4338_CTRL_STAT_BIT_RS1 0x2 /*Rate select 1*/ -+#define PT7C4338_CTRL_STAT_BIT_SQWE 0x10 /*Square Wave Enable*/ -+#define PT7C4338_CTRL_STAT_BIT_OSF 0x20 /*Oscillator Stop Flag*/ -+#define PT7C4338_CTRL_STAT_BIT_OUT 0x80 /*Output Level Control*/ -+ -+static const struct i2c_device_id pt7c4338_id[] = { -+ { "pt7c4338", 0 }, -+ { } -+}; -+MODULE_DEVICE_TABLE(i2c, pt7c4338_id); -+ -+struct pt7c4338{ -+ struct i2c_client *client; -+ struct rtc_device *rtc; -+}; -+ -+static int pt7c4338_read_time(struct device *dev, struct rtc_time *time) -+{ -+ struct i2c_client *client = to_i2c_client(dev); -+ int ret; -+ u8 buf[7]; -+ u8 year, month, day, hour, minute, second; -+ u8 week, twelve_hr, am_pm; -+ -+ ret = i2c_smbus_read_i2c_block_data(client, -+ PT7C4338_REG_SECONDS, 7, buf); -+ if (ret < 0) -+ return ret; -+ if (ret < 7) -+ return -EIO; -+ -+ second = buf[0]; -+ minute = buf[1]; -+ hour = buf[2]; -+ week = buf[3]; -+ day = buf[4]; -+ month = buf[5]; -+ year = buf[6]; -+ -+ /* Extract additional information for AM/PM */ -+ twelve_hr = hour & 0x40; -+ am_pm = hour & 0x20; -+ -+ /* Write to rtc_time structure */ -+ time->tm_sec = bcd2bin(second & 0x7f); -+ time->tm_min = bcd2bin(minute & 0x7f); -+ if (twelve_hr) { -+ /* Convert to 24 hr */ -+ if (am_pm) -+ time->tm_hour = bcd2bin(hour & 0x10) + 12; -+ else -+ time->tm_hour = bcd2bin(hour & 0xBF); -+ } else { -+ time->tm_hour = bcd2bin(hour); -+ } -+ -+ time->tm_wday = bcd2bin(week & 0x07) - 1; -+ time->tm_mday = bcd2bin(day & 0x3f); -+ time->tm_mon = bcd2bin(month & 0x1F) - 1; -+ /* assume 20YY not 19YY */ -+ time->tm_year = bcd2bin(year) + 100; -+ -+ return 0; -+} -+ -+static int pt7c4338_set_time(struct device *dev, struct rtc_time *time) -+{ -+ struct i2c_client *client = to_i2c_client(dev); -+ u8 buf[7]; -+ -+ /* Extract time from rtc_time and load into pt7c4338*/ -+ buf[0] = bin2bcd(time->tm_sec); -+ buf[1] = bin2bcd(time->tm_min); -+ buf[2] = bin2bcd(time->tm_hour); -+ buf[3] = bin2bcd(time->tm_wday + 1); /* Day of the week */ -+ buf[4] = bin2bcd(time->tm_mday); /* Date */ -+ buf[5] = bin2bcd(time->tm_mon + 1); -+ -+ /* assume 20YY not 19YY */ -+ if (time->tm_year >= 100) -+ buf[6] = bin2bcd(time->tm_year - 100); -+ else -+ buf[6] = bin2bcd(time->tm_year); -+ -+ return i2c_smbus_write_i2c_block_data(client, -+ PT7C4338_REG_SECONDS, 7, buf); -+} -+ -+static const struct rtc_class_ops pt7c4338_rtc_ops = { -+ .read_time = pt7c4338_read_time, -+ .set_time = pt7c4338_set_time, -+}; -+ -+static int pt7c4338_probe(struct i2c_client *client, -+ const struct i2c_device_id *id) -+{ -+ struct pt7c4338 *pt7c4338; -+ struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); -+ int ret; -+ -+ pt7c4338 = kzalloc(sizeof(struct pt7c4338), GFP_KERNEL); -+ if (!pt7c4338) -+ return -ENOMEM; -+ -+ pt7c4338->client = client; -+ i2c_set_clientdata(client, pt7c4338); -+ pt7c4338->rtc = rtc_device_register(client->name, &client->dev, -+ &pt7c4338_rtc_ops, THIS_MODULE); -+ if (IS_ERR(pt7c4338->rtc)) { -+ ret = PTR_ERR(pt7c4338->rtc); -+ dev_err(&client->dev, "unable to register the class device\n"); -+ goto out_free; -+ } -+ -+ return 0; -+out_free: -+ i2c_set_clientdata(client, NULL); -+ kfree(pt7c4338); -+ return ret; -+} -+ -+static int pt7c4338_remove(struct i2c_client *client) -+{ -+ struct pt7c4338 *pt7c4338 = i2c_get_clientdata(client); -+ -+ rtc_device_unregister(pt7c4338->rtc); -+ i2c_set_clientdata(client, NULL); -+ kfree(pt7c4338); -+ return 0; -+} -+ -+static struct i2c_driver pt7c4338_driver = { -+ .driver = { -+ .name = "rtc-pt7c4338", -+ .owner = THIS_MODULE, -+ }, -+ .probe = pt7c4338_probe, -+ .remove = pt7c4338_remove, -+ .id_table = pt7c4338_id, -+}; -+ -+static int __init pt7c4338_init(void) -+{ -+ return i2c_add_driver(&pt7c4338_driver); -+} -+ -+static void __exit pt7c4338_exit(void) -+{ -+ i2c_del_driver(&pt7c4338_driver); -+} -+ -+module_init(pt7c4338_init); -+module_exit(pt7c4338_exit); -+ -+MODULE_AUTHOR("Priyanka Jain <Priyanka.Jain@freescale.com>"); -+MODULE_DESCRIPTION("pericom Technology Inc. PT7C4338 RTC Driver"); -+MODULE_LICENSE("GPL"); |