/*
- * rtc-tps65910.c -- TPS65910 Real Time Clock interface
+ * Real Time Clock driver for Wolfson Microelectronics tps65910
*
- * Copyright (C) 2010 Mistral Solutions Pvt Ltd. <www.mistralsolutions.com>
- * Author: Umesh K <umeshk@mistralsolutions.com>
+ * Copyright (C) 2009 Wolfson Microelectronics PLC.
*
- * Based on rtc-twl.c
+ * 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.
*
- * 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/kernel.h>
-#include <linux/errno.h>
-#include <linux/init.h>
#include <linux/module.h>
-#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/time.h>
#include <linux/rtc.h>
+#include <linux/slab.h>
#include <linux/bcd.h>
-#include <linux/platform_device.h>
#include <linux/interrupt.h>
+#include <linux/ioctl.h>
+#include <linux/completion.h>
#include <linux/mfd/tps65910.h>
-#include <linux/gpio.h>
#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/miscdevice.h>
-#if 0
-#define DBG(x...) printk(KERN_INFO x)
-#else
-#define DBG(x...)
-#endif
/* RTC Definitions */
/* RTC_CTRL_REG bitfields */
#define BIT_RTC_PWDN 0x40
/* REG_SECONDS_REG through REG_YEARS_REG is how many registers? */
-#define ALL_TIME_REGS 6
-
-/*
- * Supports 1 byte read from TPS65910 RTC register.
- */
-static int tps65910_rtc_read_u8(u8 *data, u8 reg)
-{
- int ret;
-
- ret = tps65910_i2c_read_u8(TPS65910_I2C_ID0, data, reg);
-
- if (ret < 0)
- pr_err("tps65910_rtc: Could not read TPS65910"
- "register %X - error %d\n", reg, ret);
- return ret;
-}
-
-/*
- * Supports 1 byte write to TPS65910 RTC registers.
- */
-static int tps65910_rtc_write_u8(u8 data, u8 reg)
-{
- int ret;
+#define ALL_TIME_REGS 7
+#define ALL_ALM_REGS 6
- ret = tps65910_i2c_write_u8(TPS65910_I2C_ID0, data, reg);
- if (ret < 0)
- pr_err("tps65910_rtc: Could not write TPS65910"
- "register %X - error %d\n", reg, ret);
- return ret;
-}
-/*
- * Cache the value for timer/alarm interrupts register; this is
- * only changed by callers holding rtc ops lock (or resume).
- */
-static unsigned char rtc_irq_bits;
+#define RTC_SET_TIME_RETRIES 5
+#define RTC_GET_TIME_RETRIES 5
-/*
- * Enable 1/second update and/or alarm interrupts.
- */
-static int set_rtc_irq_bit(unsigned char bit)
-{
- unsigned char val;
- int ret;
-
- val = rtc_irq_bits | bit;
- val |= bit;
- ret = tps65910_rtc_write_u8(val, TPS65910_REG_RTC_INTERRUPTS);
- if (ret == 0)
- rtc_irq_bits = val;
- return ret;
-}
+struct tps65910_rtc {
+ struct tps65910 *tps65910;
+ struct rtc_device *rtc;
+ unsigned int alarm_enabled:1;
+};
/*
- * Disable update and/or alarm interrupts.
+ * Read current time and date in RTC
*/
-static int mask_rtc_irq_bit(unsigned char bit)
-{
- unsigned char val;
- int ret;
-
- val = rtc_irq_bits & ~bit;
- ret = tps65910_rtc_write_u8(val, TPS65910_REG_RTC_INTERRUPTS);
- if (ret == 0)
- rtc_irq_bits = val;
-
- return ret;
-}
-
-static int tps65910_rtc_alarm_irq_enable(struct device *dev, unsigned enabled)
-{
- int ret;
-
- if (enabled)
- ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
- else
- ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
-
- return ret;
-}
-
-static int tps65910_rtc_update_irq_enable(struct device *dev, unsigned enabled)
+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;
- if (enabled)
- ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
- else
- ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+ /*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;
+ }
- return ret;
-}
+ rtc_ctl = ret & (~BIT_RTC_CTRL_REG_RTC_V_OPT_M);
-#if 1 /* Debugging periodic interrupts */
-/*
- * 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
- */
+ 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;
+ }
-static int tps65910_rtc_irq_set_freq(struct device *dev, int freq)
-{
- struct rtc_device *rtc = dev_get_drvdata(dev);
+
+ /* 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;
- if (freq < 0 || freq > 3)
- return -EINVAL;
+ } while (++count < RTC_GET_TIME_RETRIES);
+ dev_err(dev, "Timed out reading current time\n");
- rtc->irq_freq = freq;
- /* set rtc irq freq to user defined value */
- set_rtc_irq_bit(freq);
+ return -EIO;
- return 0;
}
-#endif
/*
- * Gets current TPS65910 RTC time and date parameters.
- *
- * The RTC's time/alarm representation is not what gmtime(3) requires
- * Linux to use:
- *
- * - Months are 1..12 vs Linux 0-11
- * - Years are 0..99 vs Linux 1900..N (we assume 21st century)
+ * Set current time and date in RTC
*/
-static int tps65910_rtc_read_time(struct device *dev, struct rtc_time *tm)
+static int tps65910_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
- unsigned char rtc_data[ALL_TIME_REGS + 1];
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
+ struct tps65910 *tps65910 = tps65910_rtc->tps65910;
int ret;
- u8 save_control;
-
- tps65910_rtc_read_u8(&save_control, TPS65910_REG_RTC_CTRL);
- ret = tps65910_rtc_read_u8(&save_control, TPS65910_REG_RTC_CTRL);
- if (ret < 0)
- return ret;
-
- save_control &= ~BIT_RTC_CTRL_REG_RTC_V_OPT_M;
-
- ret = tps65910_rtc_write_u8(save_control, TPS65910_REG_RTC_CTRL);
- if (ret < 0)
- return ret;
-
- ret = tps65910_rtc_read_u8(&rtc_data[0], TPS65910_REG_SECONDS);
- if (ret < 0) {
- dev_err(dev, "rtc_read_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_read_u8(&rtc_data[1], TPS65910_REG_MINUTES);
+ 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, "rtc_read_time error %d\n", ret);
+ dev_err(dev, "Failed to read RTC control: %d\n", ret);
return ret;
}
- ret = tps65910_rtc_read_u8(&rtc_data[2], TPS65910_REG_HOURS);
+
+ 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, "rtc_read_time error %d\n", ret);
+ dev_err(dev, "Failed to write RTC control: %d\n", ret);
return ret;
}
- ret = tps65910_rtc_read_u8(&rtc_data[3], TPS65910_REG_DAYS);
+
+ /* 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, "rtc_read_time error %d\n", ret);
+ dev_err(dev, "Failed to read RTC times: %d\n", ret);
return ret;
}
- ret = tps65910_rtc_read_u8(&rtc_data[4], TPS65910_REG_MONTHS);
+
+ /*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, "rtc_read_time error %d\n", ret);
+ dev_err(dev, "Failed to read RTC control: %d\n", ret);
return ret;
}
- ret = tps65910_rtc_read_u8(&rtc_data[5], TPS65910_REG_YEARS);
+
+ 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, "rtc_read_time error %d\n", ret);
+ dev_err(dev, "Failed to write RTC control: %d\n", ret);
return ret;
}
- 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;
-
- DBG("%s [%d]tm_wday=%d \n",__FUNCTION__,__LINE__,tm->tm_wday);
- DBG("%s [%d]tm_sec=%d \n",__FUNCTION__,__LINE__,tm->tm_sec);
- DBG("%s [%d]tm_min=%d \n",__FUNCTION__,__LINE__,tm->tm_min);
- DBG("%s [%d]tm_hour=%d \n",__FUNCTION__,__LINE__,tm->tm_hour);
- DBG("%s [%d]tm_mday=%d \n",__FUNCTION__,__LINE__,tm->tm_mday);
- DBG("%s [%d]tm_mon=%d \n",__FUNCTION__,__LINE__,tm->tm_mon);
- DBG("%s [%d]tm_year=%d \n",__FUNCTION__,__LINE__,tm->tm_year);
-
- return ret;
+ return 0;
}
-static int tps65910_rtc_set_time(struct device *dev, struct rtc_time *tm)
+/*
+ * Read alarm time and date in RTC
+ */
+static int tps65910_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- unsigned char save_control;
- unsigned char rtc_data[ALL_TIME_REGS + 1];
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
int ret;
+ unsigned char alrm_data[ALL_ALM_REGS + 1];
- DBG("%s [%d]tm_wday=%d \n",__FUNCTION__,__LINE__,tm->tm_wday);
- DBG("%s [%d]tm_sec=%d \n",__FUNCTION__,__LINE__,tm->tm_sec);
- DBG("%s [%d]tm_min=%d \n",__FUNCTION__,__LINE__,tm->tm_min);
- DBG("%s [%d]tm_hour=%d \n",__FUNCTION__,__LINE__,tm->tm_hour);
- DBG("%s [%d]tm_mday=%d \n",__FUNCTION__,__LINE__,tm->tm_mday);
- DBG("%s [%d]tm_mon=%d \n",__FUNCTION__,__LINE__,tm->tm_mon);
- DBG("%s [%d]tm_year=%d \n",__FUNCTION__,__LINE__,tm->tm_year);
+ 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;
+ }
- rtc_data[1] = bin2bcd(tm->tm_sec);
- rtc_data[2] = bin2bcd(tm->tm_min);
- rtc_data[3] = bin2bcd(tm->tm_hour);
- rtc_data[4] = bin2bcd(tm->tm_mday);
- rtc_data[5] = bin2bcd(tm->tm_mon + 1);
- rtc_data[6] = bin2bcd(tm->tm_year - 100);
+ /* 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;
+ }
- /*Dummy read*/
- ret = tps65910_rtc_read_u8(&save_control, TPS65910_REG_RTC_CTRL);
+ if (ret & BIT_RTC_INTERRUPTS_REG_IT_ALARM_M)
+ alrm->enabled = 1;
+ else
+ alrm->enabled = 0;
- /* Stop RTC while updating the TC registers */
- ret = tps65910_rtc_read_u8(&save_control, TPS65910_REG_RTC_CTRL);
- if (ret < 0)
- goto out;
+ return 0;
+}
- save_control &= ~BIT_RTC_CTRL_REG_STOP_RTC_M;
+static int tps65910_rtc_stop_alarm(struct tps65910_rtc *tps65910_rtc)
+{
+ tps65910_rtc->alarm_enabled = 0;
- tps65910_rtc_write_u8(save_control, TPS65910_REG_RTC_CTRL);
+ return tps65910_clear_bits(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS,
+ BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
- /* update all the time registers in one shot */
- ret = tps65910_rtc_write_u8(rtc_data[1], TPS65910_REG_SECONDS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(rtc_data[2], TPS65910_REG_MINUTES);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(rtc_data[3], TPS65910_REG_HOURS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(rtc_data[4], TPS65910_REG_DAYS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(rtc_data[5], TPS65910_REG_MONTHS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(rtc_data[6], TPS65910_REG_YEARS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
+}
- /*Dummy read*/
- ret = tps65910_rtc_read_u8(&save_control, TPS65910_REG_RTC_CTRL);
+static int tps65910_rtc_start_alarm(struct tps65910_rtc *tps65910_rtc)
+{
+ tps65910_rtc->alarm_enabled = 1;
- ret = tps65910_rtc_read_u8(&save_control, TPS65910_REG_RTC_CTRL);
- if (ret < 0)
- goto out;
- /* Start back RTC */
- save_control |= BIT_RTC_CTRL_REG_STOP_RTC_M;
- ret = tps65910_rtc_write_u8(save_control, TPS65910_REG_RTC_CTRL);
+ return tps65910_set_bits(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS,
+ BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
-out:
- return ret;
}
-/*
- * Gets current TPS65910 RTC alarm time.
- */
-static int tps65910_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
+static int tps65910_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
{
- unsigned char rtc_data[ALL_TIME_REGS + 1];
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
int ret;
+ unsigned char alrm_data[ALL_TIME_REGS + 1];
- ret = tps65910_rtc_read_u8(&rtc_data[0], TPS65910_REG_ALARM_SECONDS);
- if (ret < 0) {
- dev_err(dev, "rtc_read_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_read_u8(&rtc_data[1], TPS65910_REG_ALARM_MINUTES);
+ ret = tps65910_rtc_stop_alarm(tps65910_rtc);
if (ret < 0) {
- dev_err(dev, "rtc_read_time error %d\n", ret);
+ dev_err(dev, "Failed to stop alarm: %d\n", ret);
return ret;
}
- ret = tps65910_rtc_read_u8(&rtc_data[2], TPS65910_REG_ALARM_HOURS);
- if (ret < 0) {
- dev_err(dev, "rtc_read_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_read_u8(&rtc_data[3], TPS65910_REG_ALARM_DAYS);
- if (ret < 0) {
- dev_err(dev, "rtc_read_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_read_u8(&rtc_data[4], TPS65910_REG_ALARM_MONTHS);
- if (ret < 0) {
- dev_err(dev, "rtc_read_time error %d\n", 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;
}
- ret = tps65910_rtc_read_u8(&rtc_data[5], TPS65910_REG_ALARM_YEARS);
- if (ret < 0) {
- dev_err(dev, "rtc_read_time error %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;
+ }
}
- /* some of these fields may be wildcard/"match all" */
- alm->time.tm_sec = bcd2bin(rtc_data[0]);
- alm->time.tm_min = bcd2bin(rtc_data[1]);
- alm->time.tm_hour = bcd2bin(rtc_data[2]);
- alm->time.tm_mday = bcd2bin(rtc_data[3]);
- alm->time.tm_mon = bcd2bin(rtc_data[4]) - 1;
- alm->time.tm_year = bcd2bin(rtc_data[5]) + 100;
+ return 0;
+}
- /* report cached alarm enable state */
- if (rtc_irq_bits & BIT_RTC_INTERRUPTS_REG_IT_ALARM_M)
- alm->enabled = 1;
+static int tps65910_rtc_alarm_irq_enable(struct device *dev,
+ unsigned int enabled)
+{
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
- return ret;
+ if (enabled)
+ return tps65910_rtc_start_alarm(tps65910_rtc);
+ else
+ return tps65910_rtc_stop_alarm(tps65910_rtc);
}
-static int tps65910_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
+static int tps65910_rtc_update_irq_enable(struct device *dev,
+ unsigned int enabled)
{
- unsigned char alarm_data[ALL_TIME_REGS + 1];
- int ret;
+ struct tps65910_rtc *tps65910_rtc = dev_get_drvdata(dev);
- ret = tps65910_rtc_alarm_irq_enable(dev, 0);
- if (ret)
- goto out;
+ 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);
+}
- alarm_data[1] = bin2bcd(alm->time.tm_sec);
- alarm_data[2] = bin2bcd(alm->time.tm_min);
- alarm_data[3] = bin2bcd(alm->time.tm_hour);
- alarm_data[4] = bin2bcd(alm->time.tm_mday);
- alarm_data[5] = bin2bcd(alm->time.tm_mon + 1);
- alarm_data[6] = bin2bcd(alm->time.tm_year - 100);
+/*
+ * 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;
- /* update all the alarm registers in one shot */
- ret = tps65910_rtc_write_u8(alarm_data[1], TPS65910_REG_ALARM_SECONDS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(alarm_data[2], TPS65910_REG_ALARM_MINUTES);
+ ret = tps65910_reg_read(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS);
if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
+ dev_err(dev, "Failed to read RTC interrupt: %d\n", ret);
return ret;
}
- ret = tps65910_rtc_write_u8(alarm_data[3], TPS65910_REG_ALARM_HOURS);
+
+ rtc_ctl = ret | freq;
+
+ ret = tps65910_reg_write(tps65910_rtc->tps65910, TPS65910_RTC_INTERRUPTS, rtc_ctl);
if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
+ dev_err(dev, "Failed to write RTC control: %d\n", ret);
return ret;
}
- ret = tps65910_rtc_write_u8(alarm_data[4], TPS65910_REG_ALARM_DAYS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(alarm_data[5], TPS65910_REG_ALARM_MONTHS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
- ret = tps65910_rtc_write_u8(alarm_data[6], TPS65910_REG_ALARM_YEARS);
- if (ret < 0) {
- dev_err(dev, "rtc_write_time error %d\n", ret);
- return ret;
- }
-
- if (alm->enabled)
- ret = tps65910_rtc_alarm_irq_enable(dev, 1);
-out:
+
return ret;
}
-struct work_struct rtc_wq;
-unsigned long rtc_events;
-struct rtc_device *global_rtc;
-void tps65910_rtc_work(void *data)
+static irqreturn_t tps65910_alm_irq(int irq, void *data)
{
- int res;
- u8 rd_reg;
- unsigned long events = 0;
+ struct tps65910_rtc *tps65910_rtc = data;
- DBG("Enter::%s %d\n",__FUNCTION__,__LINE__);
+ rtc_update_irq(tps65910_rtc->rtc, 1, RTC_IRQF | RTC_AF);
+
+ return IRQ_HANDLED;
+}
- res = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_INT_STS);
+static irqreturn_t tps65910_per_irq(int irq, void *data)
+{
+ struct tps65910_rtc *tps65910_rtc = data;
- if (res < 0)
- goto out;
- /*
- * Figure out source of interrupt: ALARM or TIMER in RTC_STATUS_REG.
- * only one (ALARM or RTC) interrupt source may be enabled
- * at time, we also could check our results
- * by reading RTS_INTERRUPTS_REGISTER[IT_TIMER,IT_ALARM]
- */
- if (rd_reg & TPS65910_RTC_ALARM_IT) {
- res = tps65910_rtc_write_u8(rd_reg | TPS65910_RTC_ALARM_IT,
- TPS65910_REG_INT_STS);
- if (res < 0)
- goto out;
-
- /*Dummy read -- mandatory for status register*/
- res = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_RTC_STATUS);
- mdelay(100);
- res = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_RTC_STATUS);
- res = tps65910_rtc_write_u8(rd_reg, TPS65910_REG_RTC_STATUS);
-
- rtc_events |= RTC_IRQF | RTC_AF;
- } else if (rd_reg & TPS65910_RTC_PERIOD_IT) {
- res = tps65910_rtc_write_u8(rd_reg | TPS65910_RTC_PERIOD_IT,
- TPS65910_REG_INT_STS);
- if (res < 0)
- goto out;
-
- /*Dummy read -- mandatory for status register*/
- res = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_RTC_STATUS);
- mdelay(100);
- res = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_RTC_STATUS);
- rd_reg &= 0xC3;
- res = tps65910_rtc_write_u8(rd_reg, TPS65910_REG_RTC_STATUS);
- rtc_events |= RTC_IRQF | RTC_UF;
- }
-out:
- /* Notify RTC core on event */
- events = rtc_events;
- rtc_update_irq(global_rtc, 1, events);
+ rtc_update_irq(tps65910_rtc->rtc, 1, RTC_IRQF | RTC_UF);
+
+ //printk("%s:irq=%d\n",__func__,irq);
+ return IRQ_HANDLED;
}
-static struct rtc_class_ops tps65910_rtc_ops = {
- .read_time = tps65910_rtc_read_time,
- .set_time = tps65910_rtc_set_time,
- .read_alarm = tps65910_rtc_read_alarm,
- .set_alarm = tps65910_rtc_set_alarm,
+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,
+ //.update_irq_enable = tps65910_rtc_update_irq_enable,
+ //.irq_set_freq = tps65910_rtc_irq_set_freq,
};
-static int __devinit tps65910_rtc_probe(struct platform_device *pdev)
+#ifdef CONFIG_PM
+/* Turn off the alarm if it should not be a wake source. */
+static int tps65910_rtc_suspend(struct device *dev)
{
- struct rtc_device *rtc;
- int ret = 0, stop_run = 0;
- u8 rd_reg;
- struct rtc_time tm_def = { // 2011.1.1 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,
- };
-
- rtc = rtc_device_register(pdev->name,
- &pdev->dev, &tps65910_rtc_ops, THIS_MODULE);
-
- if (IS_ERR(rtc)) {
- ret = PTR_ERR(rtc);
- dev_err(&pdev->dev, "can't register TPS65910 RTC device,\
- err %ld\n", PTR_ERR(rtc));
- goto out0;
+ 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);
}
- printk(KERN_INFO "TPS65910 RTC device successfully registered\n");
- platform_set_drvdata(pdev, rtc);
- /* Take rtc out of reset */
- tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_DEVCTRL);
- rd_reg &= ~BIT_RTC_PWDN;
- ret = tps65910_rtc_write_u8(rd_reg, TPS65910_REG_DEVCTRL);
+ return 0;
+}
- /* Dummy read to ensure that the register gets updated.
- * Please refer tps65910 TRM table:25 for details
- */
- stop_run = 0;
- ret = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_RTC_STATUS);
+/* 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) {
- printk(KERN_ERR "TPS65910 RTC STATUS REG READ FAILED\n");
- goto out1;
+ dev_err(&pdev->dev, "Failed to read TPS65910_DEVCTRL: %d\n", ret);
+ return ret;
}
- if (rd_reg & BIT_RTC_STATUS_REG_POWER_UP_M) {
- dev_warn(&pdev->dev, "Power up reset detected.\n");
- // cwz:if rtc power up reset, set default time.
- printk(KERN_INFO "TPS65910 RTC set to default time\n");
- tps65910_rtc_set_time(&rtc->dev, &tm_def);
+ 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;
+ }
}
- if (!(rd_reg & BIT_RTC_STATUS_REG_RUN_M)) {
- dev_warn(&pdev->dev, "RTC stop run.\n");
- stop_run = 1;
+
+ /*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 (rd_reg & BIT_RTC_STATUS_REG_ALARM_M)
- dev_warn(&pdev->dev, "Pending Alarm interrupt detected.\n");
- /* Clear RTC Power up reset and pending alarm interrupts */
- ret = tps65910_rtc_write_u8(rd_reg, TPS65910_REG_RTC_STATUS);
- if (ret < 0)
- goto out1;
+ if(!(ret & BIT_RTC_CTRL_REG_STOP_RTC_M))
+ {
+ rtc_ctl = ret | BIT_RTC_CTRL_REG_STOP_RTC_M;
- ret = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_INT_STS);
+ 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) {
- printk(KERN_ERR "TPS65910 RTC STATUS REG READ FAILED\n");
- goto out1;
+ 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);
}
- if (rd_reg & 0x40) {
- printk(KERN_INFO "pending alarm interrupt!!! clearing!!!");
- tps65910_rtc_write_u8(rd_reg, TPS65910_REG_INT_STS);
+ 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;
}
- global_rtc = rtc;
-
- /* Link RTC IRQ handler to TPS65910 Core */
- //tps65910_add_irq_work(TPS65910_RTC_ALARM_IRQ, tps65910_rtc_work);
- //tps65910_add_irq_work(TPS65910_RTC_PERIOD_IRQ, tps65910_rtc_work);
-
- /* Check RTC module status, Enable if it is off */
- if (stop_run) {
- dev_info(&pdev->dev, "Enabling TPS65910-RTC.\n");
- // cwz:if rtc stop, set default time, then enable rtc
- printk(KERN_INFO "TPS65910 RTC set to default time\n");
- tps65910_rtc_set_time(&rtc->dev, &tm_def);
- ret = tps65910_rtc_read_u8(&rd_reg, TPS65910_REG_RTC_CTRL);
- if (ret < 0)
- goto out1;
-
- rd_reg |= BIT_RTC_CTRL_REG_STOP_RTC_M;
- ret = tps65910_rtc_write_u8(rd_reg, TPS65910_REG_RTC_CTRL);
- if (ret < 0)
- goto out1;
+ /*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);
}
- /* init cached IRQ enable bits */
- ret = tps65910_rtc_read_u8(&rtc_irq_bits, TPS65910_REG_RTC_INTERRUPTS);
- if (ret < 0)
- goto out1;
+ 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);
+ }
- tps65910_rtc_write_u8(0x3F, TPS65910_REG_INT_MSK);
- return 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;
-out1:
- rtc_device_unregister(rtc);
-out0:
+err:
+ kfree(tps65910_rtc);
return ret;
}
-/*
- * Disable all TPS65910 RTC module interrupts.
- * Sets status flag to free.
- */
static int __devexit tps65910_rtc_remove(struct platform_device *pdev)
{
- /* leave rtc running, but disable irqs */
- struct rtc_device *rtc = platform_get_drvdata(pdev);
- int irq = platform_get_irq(pdev, 0);
-
- mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
- mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
-
+ 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(irq, rtc);
+ free_irq(alm_irq, tps65910_rtc);
+ free_irq(per_irq, tps65910_rtc);
+ rtc_device_unregister(tps65910_rtc->rtc);
+ kfree(tps65910_rtc);
- rtc_device_unregister(rtc);
- platform_set_drvdata(pdev, NULL);
return 0;
}
-static void tps65910_rtc_shutdown(struct platform_device *pdev)
-{
- /* mask timer interrupts, but leave alarm interrupts on to enable
- * power-on when alarm is triggered
- */
- mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
-}
+static const struct dev_pm_ops tps65910_rtc_pm_ops = {
+ .suspend = tps65910_rtc_suspend,
+ .resume = tps65910_rtc_resume,
-#ifdef CONFIG_PM
+ .freeze = tps65910_rtc_freeze,
+ .thaw = tps65910_rtc_resume,
+ .restore = tps65910_rtc_resume,
-static unsigned char irqstat;
+ .poweroff = tps65910_rtc_suspend,
+};
-static
-int tps65910_rtc_suspend(struct platform_device *pdev, pm_message_t state)
-{
- irqstat = rtc_irq_bits;
- mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
- return 0;
-}
+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 int tps65910_rtc_resume(struct platform_device *pdev)
+static ssize_t rtc_tps65910_test_write(struct file *file,
+ const char __user *buf, size_t count, loff_t *offset)
{
- set_rtc_irq_bit(irqstat);
- return 0;
+ 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;
}
-#else
-#define tps65910_rtc_suspend NULL
-#define tps65910_rtc_resume NULL
-#endif
-
+static const struct file_operations rtc_tps65910_test_fops = {
+ .write = rtc_tps65910_test_write,
+};
-static struct platform_driver tps65910rtc_driver = {
- .probe = tps65910_rtc_probe,
- .remove = __devexit_p(tps65910_rtc_remove),
- .shutdown = tps65910_rtc_shutdown,
- .suspend = tps65910_rtc_suspend,
- .resume = tps65910_rtc_resume,
- .driver = {
- .owner = THIS_MODULE,
- .name = "tps65910_rtc",
- },
+static struct miscdevice rtc_tps65910_test_misc = {
+ .minor = MISC_DYNAMIC_MINOR,
+ .name = "rtc_tps65910_test",
+ .fops = &rtc_tps65910_test_fops,
};
-//extern int board_wm831x ;
+
static int __init tps65910_rtc_init(void)
{
-// if (board_wm831x == 1)
-// {
-// printk("board with wm831 not tps65910,so skip register tps65910\n");
-// return 0;
-// }
-
- return platform_driver_register(&tps65910rtc_driver);
+ misc_register(&rtc_tps65910_test_misc);
+ return platform_driver_register(&tps65910_rtc_driver);
}
module_init(tps65910_rtc_init);
static void __exit tps65910_rtc_exit(void)
-{
- platform_driver_unregister(&tps65910rtc_driver);
+{
+ misc_deregister(&rtc_tps65910_test_misc);
+ platform_driver_unregister(&tps65910_rtc_driver);
}
module_exit(tps65910_rtc_exit);
-MODULE_ALIAS("platform:tps65910_rtc");
-MODULE_AUTHOR("cwz <cwz@rockchips.com");
+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