From b0c88072f6652fa897d67a4e8c5bea5e09438189 Mon Sep 17 00:00:00 2001 From: Balaji Rao Date: Thu, 20 Nov 2008 19:46:51 +0000 Subject: pcf50633_rtc.patch Move the RTC subdevice driver into drivers/rtc/rtc-pcf50633.c --- drivers/rtc/Kconfig | 6 + drivers/rtc/Makefile | 1 + drivers/rtc/rtc-pcf50633.c | 272 +++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 279 insertions(+) create mode 100644 drivers/rtc/rtc-pcf50633.c (limited to 'drivers/rtc') diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 8abbb2020af..e8a1c7c5420 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -219,6 +219,12 @@ config RTC_DRV_PCF8583 This driver can also be built as a module. If so, the module will be called rtc-pcf8583. +config RTC_DRV_PCF50633 + tristate "Philips PCF50633" + help + If you say yes here you get support for the Philips PCF50633 + PMU's RTC driver. + config RTC_DRV_M41T80 tristate "ST M41T65/M41T80/81/82/83/84/85/87" help diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index e9e8474cc8f..ab3a003991e 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -49,6 +49,7 @@ obj-$(CONFIG_RTC_DRV_MAX6902) += rtc-max6902.o obj-$(CONFIG_RTC_DRV_OMAP) += rtc-omap.o obj-$(CONFIG_RTC_DRV_PCF8563) += rtc-pcf8563.o obj-$(CONFIG_RTC_DRV_PCF8583) += rtc-pcf8583.o +obj-$(CONFIG_RTC_DRV_PCF50633) += rtc-pcf50633.o obj-$(CONFIG_RTC_DRV_PL030) += rtc-pl030.o obj-$(CONFIG_RTC_DRV_PL031) += rtc-pl031.o obj-$(CONFIG_RTC_DRV_PARISC) += rtc-parisc.o diff --git a/drivers/rtc/rtc-pcf50633.c b/drivers/rtc/rtc-pcf50633.c new file mode 100644 index 00000000000..74b7e569d39 --- /dev/null +++ b/drivers/rtc/rtc-pcf50633.c @@ -0,0 +1,272 @@ +#include +#include +#include +#include +#include +#include + +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 time[PCF50633_TI_EXTENT]; +}; + +static void pcf2rtc_time(struct rtc_time *rtc, struct pcf50633_time *pcf) +{ + 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->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, + unsigned long arg) +{ + struct pcf50633_data *pcf = dev->platform_data; + + switch (cmd) { + case RTC_AIE_OFF: + /* disable the alarm interrupt */ + pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_INT1M, + PCF50633_INT1_ALARM, PCF50633_INT1_ALARM); + return 0; + case RTC_AIE_ON: + /* enable the alarm interrupt */ + pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M, PCF50633_INT1_ALARM); + return 0; + case RTC_PIE_OFF: + /* disable periodic interrupt (hz tick) */ + pcf->flags &= ~PCF50633_F_RTC_SECOND; + pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_INT1M, + PCF50633_INT1_SECOND, PCF50633_INT1_SECOND); + return 0; + case RTC_PIE_ON: + /* ensable periodic interrupt (hz tick) */ + pcf->flags |= PCF50633_F_RTC_SECOND; + pcf50633_reg_clear_bits(pcf, PCF50633_REG_INT1M, PCF50633_INT1_SECOND); + return 0; + } + return -ENOIOCTLCMD; +} + +#ifdef PCF50633_RTC +void pcf50633_rtc_handle_event(struct pcf50633_data *pcf, + enum pcf50633_rtc_event evt) +{ + switch(evt) { + case PCF50633_RTC_EVENT_ALARM: + rtc_update_irq(pcf->rtc, 1, RTC_AF | RTC_IRQF); + break; + case PCF50633_RTC_EVENT_SECOND: + rtc_update_irq(pcf->rtc, 1, RTC_PF | RTC_IRQF); + } +} +#else +void pcf50633_rtc_handle_event(struct pcf50633_data *pcf, + enum pcf50633_rtc_event evt) +{ + +} +#endif + +static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm) +{ + struct pcf50633_data *pcf = dev->platform_data; + struct pcf50633_time pcf_tm; + int ret; + + mutex_lock(&pcf->lock); + + 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); + + dev_dbg(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); + + dev_dbg(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); + + return 0; +} + +static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm) +{ + struct pcf50633_data *pcf = dev->platform_data; + struct pcf50633_time pcf_tm; + int ret; + + dev_dbg(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); + dev_dbg(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 */ + + 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); + + return 0; +} + +static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct pcf50633_data *pcf = dev->platform_data; + struct pcf50633_time pcf_tm; + int ret; + u_int8_t reg; + + mutex_lock(&pcf->lock); + + pcf50633_read(pcf, PCF50633_REG_INT1M, 1, ®); + alrm->enabled = reg & PCF50633_INT1_ALARM ? 0 : 1; + + ret = pcf50633_read(pcf, 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); + + return 0; +} + +static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) +{ + struct pcf50633_data *pcf = dev->platform_data; + struct pcf50633_time pcf_tm; + u_int8_t irqmask; + int ret; + + rtc2pcf_time(&pcf_tm, &alrm->time); + + mutex_lock(&pcf->lock); + + /* disable alarm interrupt */ + pcf50633_read(pcf, PCF50633_REG_INT1M, 1, &irqmask); + irqmask |= PCF50633_INT1_ALARM; + pcf50633_write(pcf, PCF50633_REG_INT1M, 1, &irqmask); + + ret = pcf50633_write(pcf, 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 */ + pcf50633_read(pcf, PCF50633_REG_INT1M, 1, &irqmask); + irqmask &= ~PCF50633_INT1_ALARM; + pcf50633_write(pcf, PCF50633_REG_INT1M, 1, &irqmask); + } + + mutex_unlock(&pcf->lock); + + /* FIXME */ + return 0; +} +static struct rtc_class_ops pcf50633_rtc_ops = { + .ioctl = pcf50633_rtc_ioctl, + .read_time = pcf50633_rtc_read_time, + .set_time = pcf50633_rtc_set_time, + .read_alarm = pcf50633_rtc_read_alarm, + .set_alarm = pcf50633_rtc_set_alarm, +}; + +static int pcf50633_rtc_probe(struct platform_device *pdev) +{ + struct rtc_device *rtc; + + rtc = rtc_device_register("pcf50633", &pdev->dev, + &pcf50633_rtc_ops, THIS_MODULE); + if (IS_ERR(rtc)) + return -ENODEV; + + return 0; +} + +static int pcf50633_rtc_remove(struct platform_device *pdev) +{ + return 0; +} + + +static struct platform_driver pcf50633_rtc_driver = { + .driver = { + .name = "pcf50633-rtc", + }, + .probe = pcf50633_rtc_probe, + .remove = __devexit_p(pcf50633_rtc_remove), +}; + +static int __init pcf50633_rtc_init(void) +{ + return platform_driver_register(&pcf50633_rtc_driver); +} +module_init(pcf50633_rtc_init); + +static void __exit pcf50633_rtc_exit(void) +{ + platform_driver_unregister(&pcf50633_rtc_driver); +} +module_exit(pcf50633_rtc_exit); + + +MODULE_DESCRIPTION("RTC driver for NXP PCF50633 power management unit"); +MODULE_AUTHOR("Balaji Rao "); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3