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Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.26/1165-fix-pcf50633-rtc-i2c-bulk-autoincrement-simplify.pat.patch')
-rwxr-xr-xtarget/linux/s3c24xx/patches-2.6.26/1165-fix-pcf50633-rtc-i2c-bulk-autoincrement-simplify.pat.patch224
1 files changed, 224 insertions, 0 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.26/1165-fix-pcf50633-rtc-i2c-bulk-autoincrement-simplify.pat.patch b/target/linux/s3c24xx/patches-2.6.26/1165-fix-pcf50633-rtc-i2c-bulk-autoincrement-simplify.pat.patch
new file mode 100755
index 0000000000..064dee074b
--- /dev/null
+++ b/target/linux/s3c24xx/patches-2.6.26/1165-fix-pcf50633-rtc-i2c-bulk-autoincrement-simplify.pat.patch
@@ -0,0 +1,224 @@
+From 03469473733ccb461781e091233bb337f70417f1 Mon Sep 17 00:00:00 2001
+From: Andy Green <andy@openmoko.com>
+Date: Fri, 25 Jul 2008 23:06:12 +0100
+Subject: [PATCH] fix-pcf50633-rtc-i2c-bulk-autoincrement-simplify.patch
+
+More pcf50633 major time saving by using i2c bulk autoincrement. Code
+reduction too by using array for time elements.
+
+Signed-off-by: Andy Green <andy@openmoko.com>
+---
+ drivers/i2c/chips/pcf50633.c | 134 ++++++++++++++++++++++++------------------
+ 1 files changed, 77 insertions(+), 57 deletions(-)
+
+diff --git a/drivers/i2c/chips/pcf50633.c b/drivers/i2c/chips/pcf50633.c
+index 5c9d209..0406767 100644
+--- a/drivers/i2c/chips/pcf50633.c
++++ b/drivers/i2c/chips/pcf50633.c
+@@ -1504,37 +1504,42 @@ static void pcf50633_get_power_status(struct apm_power_info *info)
+ /***********************************************************************
+ * RTC
+ ***********************************************************************/
++enum pcf50633_time_indexes {
++ PCF50633_TI_SEC = 0,
++ PCF50633_TI_MIN,
++ PCF50633_TI_HOUR,
++ PCF50633_TI_WKDAY,
++ PCF50633_TI_DAY,
++ PCF50633_TI_MONTH,
++ PCF50633_TI_YEAR,
++ PCF50633_TI_EXTENT /* always last */
++};
++
+
+ struct pcf50633_time {
+- u_int8_t sec;
+- u_int8_t min;
+- u_int8_t hour;
+- u_int8_t wkday;
+- u_int8_t day;
+- u_int8_t month;
+- u_int8_t year;
++ u_int8_t time[PCF50633_TI_EXTENT];
+ };
+
+ static void pcf2rtc_time(struct rtc_time *rtc, struct pcf50633_time *pcf)
+ {
+- rtc->tm_sec = BCD2BIN(pcf->sec);
+- rtc->tm_min = BCD2BIN(pcf->min);
+- rtc->tm_hour = BCD2BIN(pcf->hour);
+- rtc->tm_wday = BCD2BIN(pcf->wkday);
+- rtc->tm_mday = BCD2BIN(pcf->day);
+- rtc->tm_mon = BCD2BIN(pcf->month);
+- rtc->tm_year = BCD2BIN(pcf->year) + 100;
++ rtc->tm_sec = BCD2BIN(pcf->time[PCF50633_TI_SEC]);
++ rtc->tm_min = BCD2BIN(pcf->time[PCF50633_TI_MIN]);
++ rtc->tm_hour = BCD2BIN(pcf->time[PCF50633_TI_HOUR]);
++ rtc->tm_wday = BCD2BIN(pcf->time[PCF50633_TI_WKDAY]);
++ rtc->tm_mday = BCD2BIN(pcf->time[PCF50633_TI_DAY]);
++ rtc->tm_mon = BCD2BIN(pcf->time[PCF50633_TI_MONTH]);
++ rtc->tm_year = BCD2BIN(pcf->time[PCF50633_TI_YEAR]) + 100;
+ }
+
+ static void rtc2pcf_time(struct pcf50633_time *pcf, struct rtc_time *rtc)
+ {
+- pcf->sec = BIN2BCD(rtc->tm_sec);
+- pcf->min = BIN2BCD(rtc->tm_min);
+- pcf->hour = BIN2BCD(rtc->tm_hour);
+- pcf->wkday = BIN2BCD(rtc->tm_wday);
+- pcf->day = BIN2BCD(rtc->tm_mday);
+- pcf->month = BIN2BCD(rtc->tm_mon);
+- pcf->year = BIN2BCD(rtc->tm_year - 100);
++ pcf->time[PCF50633_TI_SEC] = BIN2BCD(rtc->tm_sec);
++ pcf->time[PCF50633_TI_MIN] = BIN2BCD(rtc->tm_min);
++ pcf->time[PCF50633_TI_HOUR] = BIN2BCD(rtc->tm_hour);
++ pcf->time[PCF50633_TI_WKDAY] = BIN2BCD(rtc->tm_wday);
++ pcf->time[PCF50633_TI_DAY] = BIN2BCD(rtc->tm_mday);
++ pcf->time[PCF50633_TI_MONTH] = BIN2BCD(rtc->tm_mon);
++ pcf->time[PCF50633_TI_YEAR] = BIN2BCD(rtc->tm_year - 100);
+ }
+
+ static int pcf50633_rtc_ioctl(struct device *dev, unsigned int cmd,
+@@ -1573,24 +1578,30 @@ static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm)
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf50633_data *pcf = i2c_get_clientdata(client);
+ struct pcf50633_time pcf_tm;
++ int ret;
+
+ mutex_lock(&pcf->lock);
+- pcf_tm.sec = __reg_read(pcf, PCF50633_REG_RTCSC);
+- pcf_tm.min = __reg_read(pcf, PCF50633_REG_RTCMN);
+- pcf_tm.hour = __reg_read(pcf, PCF50633_REG_RTCHR);
+- pcf_tm.wkday = __reg_read(pcf, PCF50633_REG_RTCWD);
+- pcf_tm.day = __reg_read(pcf, PCF50633_REG_RTCDT);
+- pcf_tm.month = __reg_read(pcf, PCF50633_REG_RTCMT);
+- pcf_tm.year = __reg_read(pcf, PCF50633_REG_RTCYR);
++
++ ret = i2c_smbus_read_i2c_block_data(&pcf->client,
++ PCF50633_REG_RTCSC,
++ PCF50633_TI_EXTENT,
++ &pcf_tm.time[0]);
++ if (ret != PCF50633_TI_EXTENT)
++ dev_err(dev, "Failed to read time :-(\n");
++
+ mutex_unlock(&pcf->lock);
+
+- DEBUGP("PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
+- pcf_tm.day, pcf_tm.month, pcf_tm.year,
+- pcf_tm.hour, pcf_tm.min, pcf_tm.sec);
++ dev_info(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
++ pcf_tm.time[PCF50633_TI_DAY],
++ pcf_tm.time[PCF50633_TI_MONTH],
++ pcf_tm.time[PCF50633_TI_YEAR],
++ pcf_tm.time[PCF50633_TI_HOUR],
++ pcf_tm.time[PCF50633_TI_MIN],
++ pcf_tm.time[PCF50633_TI_SEC]);
+
+ pcf2rtc_time(tm, &pcf_tm);
+
+- DEBUGP("RTC_TIME: %u.%u.%u %u:%u:%u\n",
++ dev_info(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n",
+ tm->tm_mday, tm->tm_mon, tm->tm_year,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+
+@@ -1602,24 +1613,30 @@ static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm)
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf50633_data *pcf = i2c_get_clientdata(client);
+ struct pcf50633_time pcf_tm;
++ int ret;
+
+- DEBUGP("RTC_TIME: %u.%u.%u %u:%u:%u\n",
++ dev_info(dev, "RTC_TIME: %u.%u.%u %u:%u:%u\n",
+ tm->tm_mday, tm->tm_mon, tm->tm_year,
+ tm->tm_hour, tm->tm_min, tm->tm_sec);
+ rtc2pcf_time(&pcf_tm, tm);
+- DEBUGP("PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
+- pcf_tm.day, pcf_tm.month, pcf_tm.year,
+- pcf_tm.hour, pcf_tm.min, pcf_tm.sec);
++ dev_info(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n",
++ pcf_tm.time[PCF50633_TI_DAY],
++ pcf_tm.time[PCF50633_TI_MONTH],
++ pcf_tm.time[PCF50633_TI_YEAR],
++ pcf_tm.time[PCF50633_TI_HOUR],
++ pcf_tm.time[PCF50633_TI_MIN],
++ pcf_tm.time[PCF50633_TI_SEC]);
+
+ mutex_lock(&pcf->lock);
+ /* FIXME: disable second interrupt */
+- __reg_write(pcf, PCF50633_REG_RTCSC, pcf_tm.sec);
+- __reg_write(pcf, PCF50633_REG_RTCMN, pcf_tm.min);
+- __reg_write(pcf, PCF50633_REG_RTCHR, pcf_tm.hour);
+- __reg_write(pcf, PCF50633_REG_RTCWD, pcf_tm.wkday);
+- __reg_write(pcf, PCF50633_REG_RTCDT, pcf_tm.day);
+- __reg_write(pcf, PCF50633_REG_RTCMT, pcf_tm.month);
+- __reg_write(pcf, PCF50633_REG_RTCYR, pcf_tm.year);
++
++ ret = i2c_smbus_write_i2c_block_data(&pcf->client,
++ PCF50633_REG_RTCSC,
++ PCF50633_TI_EXTENT,
++ &pcf_tm.time[0]);
++ if (ret)
++ dev_err(dev, "Failed to set time %d\n", ret);
++
+ /* FIXME: re-enable second interrupt */
+ mutex_unlock(&pcf->lock);
+
+@@ -1631,17 +1648,20 @@ static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+ struct i2c_client *client = to_i2c_client(dev);
+ struct pcf50633_data *pcf = i2c_get_clientdata(client);
+ struct pcf50633_time pcf_tm;
++ int ret;
+
+ mutex_lock(&pcf->lock);
++
+ alrm->enabled =
+ __reg_read(pcf, PCF50633_REG_INT1M) & PCF50633_INT1_ALARM ? 0 : 1;
+- pcf_tm.sec = __reg_read(pcf, PCF50633_REG_RTCSCA);
+- pcf_tm.min = __reg_read(pcf, PCF50633_REG_RTCMNA);
+- pcf_tm.hour = __reg_read(pcf, PCF50633_REG_RTCHRA);
+- pcf_tm.wkday = __reg_read(pcf, PCF50633_REG_RTCWDA);
+- pcf_tm.day = __reg_read(pcf, PCF50633_REG_RTCDTA);
+- pcf_tm.month = __reg_read(pcf, PCF50633_REG_RTCMTA);
+- pcf_tm.year = __reg_read(pcf, PCF50633_REG_RTCYRA);
++
++ ret = i2c_smbus_read_i2c_block_data(&pcf->client,
++ PCF50633_REG_RTCSCA,
++ PCF50633_TI_EXTENT,
++ &pcf_tm.time[0]);
++ if (ret != PCF50633_TI_EXTENT)
++ dev_err(dev, "Failed to read Alarm time :-(\n");
++
+ mutex_unlock(&pcf->lock);
+
+ pcf2rtc_time(&alrm->time, &pcf_tm);
+@@ -1655,6 +1675,7 @@ static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+ struct pcf50633_data *pcf = i2c_get_clientdata(client);
+ struct pcf50633_time pcf_tm;
+ u_int8_t irqmask;
++ int ret;
+
+ rtc2pcf_time(&pcf_tm, &alrm->time);
+
+@@ -1665,13 +1686,12 @@ static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
+ irqmask |= PCF50633_INT1_ALARM;
+ __reg_write(pcf, PCF50633_REG_INT1M, irqmask);
+
+- __reg_write(pcf, PCF50633_REG_RTCSCA, pcf_tm.sec);
+- __reg_write(pcf, PCF50633_REG_RTCMNA, pcf_tm.min);
+- __reg_write(pcf, PCF50633_REG_RTCHRA, pcf_tm.hour);
+- __reg_write(pcf, PCF50633_REG_RTCWDA, pcf_tm.wkday);
+- __reg_write(pcf, PCF50633_REG_RTCDTA, pcf_tm.day);
+- __reg_write(pcf, PCF50633_REG_RTCMTA, pcf_tm.month);
+- __reg_write(pcf, PCF50633_REG_RTCYRA, pcf_tm.year);
++ ret = i2c_smbus_write_i2c_block_data(&pcf->client,
++ PCF50633_REG_RTCSCA,
++ PCF50633_TI_EXTENT,
++ &pcf_tm.time[0]);
++ if (ret)
++ dev_err(dev, "Failed to write alarm time :-( %d\n", ret);
+
+ if (alrm->enabled) {
+ /* (re-)enaable alarm interrupt */
+--
+1.5.6.3
+
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