static int parport_arc_init(void)
{
/* Archimedes hardware provides only one port, at a fixed address */
struct parport *p;
struct resource res;
char *fake_name = "parport probe");
res = request_region(PORT_BASE, 1, fake_name);
if (res == NULL)
return 0;
p = parport_register_port (PORT_BASE, IRQ_PRINTERACK,
PARPORT_DMA_NONE, &parport_arc_ops);
if (!p) {
release_region(PORT_BASE, 1);
return 0;
}
p->modes = PARPORT_MODE_ARCSPP;
p->size = 1;
rename_region(res, p->name);
printk(KERN_INFO "%s: Archimedes on-board port, using irq %d\n",
p->irq);
/* Tell the high-level drivers about the port. */
parport_announce_port (p);
return 1;
}
static void __exit cmos_do_remove(struct device *dev)
{
struct cmos_rtc *cmos = dev_get_drvdata(dev);
cmos_do_shutdown();
if (is_pnpacpi())
release_resource(cmos->iomem);
rename_region(cmos->iomem, NULL);
if (is_valid_irq(cmos->irq))
free_irq(cmos->irq, &cmos_rtc.rtc->class_dev);
rtc_device_unregister(cmos_rtc.rtc);
cmos_rtc.dev = NULL;
dev_set_drvdata(dev, NULL);
}
static int INITSECTION
cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
{
struct cmos_rtc_board_info *info = dev->platform_data;
int retval = 0;
unsigned char rtc_control;
unsigned address_space;
/* there can be only one ... */
if (cmos_rtc.dev)
return -EBUSY;
if (!ports)
return -ENODEV;
/* Claim I/O ports ASAP, minimizing conflict with legacy driver.
*
* REVISIT non-x86 systems may instead use memory space resources
* (needing ioremap etc), not i/o space resources like this ...
*/
ports = request_region(ports->start,
resource_size(ports),
driver_name);
if (!ports) {
dev_dbg(dev, "i/o registers already in use\n");
return -EBUSY;
}
cmos_rtc.irq = rtc_irq;
cmos_rtc.iomem = ports;
/* Heuristic to deduce NVRAM size ... do what the legacy NVRAM
* driver did, but don't reject unknown configs. Old hardware
* won't address 128 bytes. Newer chips have multiple banks,
* though they may not be listed in one I/O resource.
*/
#if defined(CONFIG_ATARI)
address_space = 64;
#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) \
|| defined(__sparc__) || defined(__mips__) \
|| defined(__powerpc__)
address_space = 128;
#else
#warning Assuming 128 bytes of RTC+NVRAM address space, not 64 bytes.
address_space = 128;
#endif
if (can_bank2 && ports->end > (ports->start + 1))
address_space = 256;
/* For ACPI systems extension info comes from the FADT. On others,
* board specific setup provides it as appropriate. Systems where
* the alarm IRQ isn't automatically a wakeup IRQ (like ACPI, and
* some almost-clones) can provide hooks to make that behave.
*
* Note that ACPI doesn't preclude putting these registers into
* "extended" areas of the chip, including some that we won't yet
* expect CMOS_READ and friends to handle.
*/
if (info) {
if (info->rtc_day_alarm && info->rtc_day_alarm < 128)
cmos_rtc.day_alrm = info->rtc_day_alarm;
if (info->rtc_mon_alarm && info->rtc_mon_alarm < 128)
cmos_rtc.mon_alrm = info->rtc_mon_alarm;
if (info->rtc_century && info->rtc_century < 128)
cmos_rtc.century = info->rtc_century;
if (info->wake_on && info->wake_off) {
cmos_rtc.wake_on = info->wake_on;
cmos_rtc.wake_off = info->wake_off;
}
}
cmos_rtc.dev = dev;
dev_set_drvdata(dev, &cmos_rtc);
cmos_rtc.rtc = rtc_device_register(driver_name, dev,
&cmos_rtc_ops, THIS_MODULE);
if (IS_ERR(cmos_rtc.rtc)) {
retval = PTR_ERR(cmos_rtc.rtc);
goto cleanup0;
}
rename_region(ports, dev_name(&cmos_rtc.rtc->dev));
spin_lock_irq(&rtc_lock);
/* force periodic irq to CMOS reset default of 1024Hz;
*
* REVISIT it's been reported that at least one x86_64 ALI mobo
* doesn't use 32KHz here ... for portability we might need to
* do something about other clock frequencies.
*/
cmos_rtc.rtc->irq_freq = 1024;
hpet_set_periodic_freq(cmos_rtc.rtc->irq_freq);
CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT);
/* disable irqs */
cmos_irq_disable(&cmos_rtc, RTC_PIE | RTC_AIE | RTC_UIE);
rtc_control = CMOS_READ(RTC_CONTROL);
spin_unlock_irq(&rtc_lock);
/* FIXME:
* <asm-generic/rtc.h> doesn't know 12-hour mode either.
*/
if (is_valid_irq(rtc_irq) && !(rtc_control & RTC_24H)) {
dev_warn(dev, "only 24-hr supported\n");
retval = -ENXIO;
goto cleanup1;
}
if (is_valid_irq(rtc_irq)) {
irq_handler_t rtc_cmos_int_handler;
if (is_hpet_enabled()) {
int err;
rtc_cmos_int_handler = hpet_rtc_interrupt;
err = hpet_register_irq_handler(cmos_interrupt);
if (err != 0) {
dev_warn(dev, "hpet_register_irq_handler "
" failed in rtc_init().");
goto cleanup1;
}
} else
rtc_cmos_int_handler = cmos_interrupt;
retval = request_irq(rtc_irq, rtc_cmos_int_handler,
0, dev_name(&cmos_rtc.rtc->dev),
cmos_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
goto cleanup1;
}
}
hpet_rtc_timer_init();
/* export at least the first block of NVRAM */
nvram.size = address_space - NVRAM_OFFSET;
retval = sysfs_create_bin_file(&dev->kobj, &nvram);
if (retval < 0) {
dev_dbg(dev, "can't create nvram file? %d\n", retval);
goto cleanup2;
}
dev_info(dev, "%s%s, %zd bytes nvram%s\n",
!is_valid_irq(rtc_irq) ? "no alarms" :
cmos_rtc.mon_alrm ? "alarms up to one year" :
cmos_rtc.day_alrm ? "alarms up to one month" :
"alarms up to one day",
cmos_rtc.century ? ", y3k" : "",
nvram.size,
is_hpet_enabled() ? ", hpet irqs" : "");
return 0;
cleanup2:
if (is_valid_irq(rtc_irq))
free_irq(rtc_irq, cmos_rtc.rtc);
cleanup1:
cmos_rtc.dev = NULL;
rtc_device_unregister(cmos_rtc.rtc);
cleanup0:
release_region(ports->start, resource_size(ports));
return retval;
}
static int __devinit
vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
{
int retval = 0;
unsigned char rtc_control;
/* There can be only one ... */
if (mrst_rtc.dev)
return -EBUSY;
if (!iomem)
return -ENODEV;
iomem = request_mem_region(iomem->start, resource_size(iomem),
driver_name);
if (!iomem) {
dev_dbg(dev, "i/o mem already in use.\n");
return -EBUSY;
}
mrst_rtc.irq = rtc_irq;
mrst_rtc.iomem = iomem;
mrst_rtc.dev = dev;
dev_set_drvdata(dev, &mrst_rtc);
mrst_rtc.rtc = rtc_device_register(driver_name, dev,
&mrst_rtc_ops, THIS_MODULE);
if (IS_ERR(mrst_rtc.rtc)) {
retval = PTR_ERR(mrst_rtc.rtc);
goto cleanup0;
}
rename_region(iomem, dev_name(&mrst_rtc.rtc->dev));
spin_lock_irq(&rtc_lock);
mrst_irq_disable(&mrst_rtc, RTC_PIE | RTC_AIE);
rtc_control = vrtc_cmos_read(RTC_CONTROL);
spin_unlock_irq(&rtc_lock);
if (!(rtc_control & RTC_24H) || (rtc_control & (RTC_DM_BINARY)))
dev_dbg(dev, "TODO: support more than 24-hr BCD mode\n");
if (rtc_irq) {
retval = request_irq(rtc_irq, mrst_rtc_irq,
IRQF_DISABLED, dev_name(&mrst_rtc.rtc->dev),
mrst_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use, err %d\n",
rtc_irq, retval);
goto cleanup1;
}
}
dev_dbg(dev, "initialised\n");
return 0;
cleanup1:
rtc_device_unregister(mrst_rtc.rtc);
cleanup0:
dev_set_drvdata(dev, NULL);
mrst_rtc.dev = NULL;
release_mem_region(iomem->start, resource_size(iomem));
dev_err(dev, "rtc-mrst: unable to initialise\n");
return retval;
}
static int
vrtc_mrst_do_probe(struct device *dev, struct resource *iomem, int rtc_irq)
{
int retval = 0;
unsigned char rtc_control;
unsigned char enable_bit_save = 0;
/* There can be only one ... */
if (mrst_rtc.dev)
return -EBUSY;
if (!iomem)
return -ENODEV;
iomem = request_mem_region(iomem->start,
iomem->end + 1 - iomem->start,
driver_name);
if (!iomem) {
dev_dbg(dev, "i/o mem already in use.\n");
return -EBUSY;
}
mrst_rtc.irq = rtc_irq;
mrst_rtc.iomem = iomem;
mrst_rtc.dev = dev;
dev_set_drvdata(dev, &mrst_rtc);
mrst_rtc.rtc = rtc_device_register(driver_name, dev,
&mrst_rtc_ops, THIS_MODULE);
if (IS_ERR(mrst_rtc.rtc)) {
retval = PTR_ERR(mrst_rtc.rtc);
goto cleanup0;
}
rename_region(iomem, dev_name(&mrst_rtc.rtc->dev));
printk(KERN_ALERT"(%s) +------------rtc info-----------+\n",__func__);
spin_lock_irq(&rtc_lock);
enable_bit_save = vrtc_cmos_read(RTC_CONTROL);
enable_bit_save &= (RTC_PIE | RTC_AIE);
mrst_irq_disable(&mrst_rtc, RTC_PIE | RTC_AIE);
rtc_control = vrtc_cmos_read(RTC_CONTROL);
spin_unlock_irq(&rtc_lock);
printk(KERN_ALERT"read PIE_AIE_save = 0x%02x, then clear. rtc_control = 0x%02x\n",enable_bit_save,rtc_control);
if (!(rtc_control & RTC_24H) || (rtc_control & (RTC_DM_BINARY)))
dev_dbg(dev, "TODO: support more than 24-hr BCD mode\n");
if (is_valid_irq(rtc_irq)) {
retval = request_irq(rtc_irq, mrst_rtc_irq,
IRQF_NO_SUSPEND, dev_name(&mrst_rtc.rtc->dev),
mrst_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use, err %d\n",
rtc_irq, retval);
goto cleanup1;
}
}
/* make RTC device wake capable from sleep */
device_init_wakeup(dev, true);
if ((__intel_mid_cpu_chip == INTEL_MID_CPU_CHIP_PENWELL) ||
(__intel_mid_cpu_chip == INTEL_MID_CPU_CHIP_CLOVERVIEW)) {
retval = rpmsg_send_command(vrtc_mrst_instance,
IPCMSG_GET_HOBADDR, 0, NULL, &oshob_base, 0, 1);
if (retval < 0) {
dev_dbg(dev,
"Unable to get OSHOB base address, err %d\n",
retval);
goto cleanup1;
}
oshob_addr = ioremap_nocache(oshob_base+OSHOB_ALARM_OFFSET, 4);
if (!oshob_addr) {
dev_dbg(dev, "Unable to do ioremap for OSHOB\n");
retval = -ENOMEM;
goto cleanup1;
}
}
spin_lock_irq(&rtc_lock);
if(enable_bit_save)
mrst_irq_enable(&mrst_rtc, enable_bit_save);//add for power off rtc issue
spin_unlock_irq(&rtc_lock);
rtc_control = vrtc_cmos_read(RTC_CONTROL);
printk(KERN_ALERT"read resume rtc_control = 0x%02x.\n",rtc_control);
printk(KERN_ALERT"(%s) +-------------------------------+\n",__func__);
dev_dbg(dev, "vRTC driver initialised\n");
return 0;
cleanup1:
rtc_device_unregister(mrst_rtc.rtc);
cleanup0:
dev_set_drvdata(dev, NULL);
mrst_rtc.dev = NULL;
release_mem_region(iomem->start, resource_size(iomem));
dev_err(dev, "rtc-mrst: unable to initialise\n");
return retval;
}
static int INITSECTION
cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
{
struct cmos_rtc_board_info *info = dev->platform_data;
int retval = 0;
unsigned char rtc_control;
unsigned address_space;
if (cmos_rtc.dev)
return -EBUSY;
if (!ports)
return -ENODEV;
ports = request_region(ports->start,
resource_size(ports),
driver_name);
if (!ports) {
dev_dbg(dev, "i/o registers already in use\n");
return -EBUSY;
}
cmos_rtc.irq = rtc_irq;
cmos_rtc.iomem = ports;
#if defined(CONFIG_ATARI)
address_space = 64;
#elif defined(__i386__) || defined(__x86_64__) || defined(__arm__) \
|| defined(__sparc__) || defined(__mips__) \
|| defined(__powerpc__)
address_space = 128;
#else
#warning Assuming 128 bytes of RTC+NVRAM address space, not 64 bytes.
address_space = 128;
#endif
if (can_bank2 && ports->end > (ports->start + 1))
address_space = 256;
if (info) {
if (info->rtc_day_alarm && info->rtc_day_alarm < 128)
cmos_rtc.day_alrm = info->rtc_day_alarm;
if (info->rtc_mon_alarm && info->rtc_mon_alarm < 128)
cmos_rtc.mon_alrm = info->rtc_mon_alarm;
if (info->rtc_century && info->rtc_century < 128)
cmos_rtc.century = info->rtc_century;
if (info->wake_on && info->wake_off) {
cmos_rtc.wake_on = info->wake_on;
cmos_rtc.wake_off = info->wake_off;
}
}
cmos_rtc.dev = dev;
dev_set_drvdata(dev, &cmos_rtc);
cmos_rtc.rtc = rtc_device_register(driver_name, dev,
&cmos_rtc_ops, THIS_MODULE);
if (IS_ERR(cmos_rtc.rtc)) {
retval = PTR_ERR(cmos_rtc.rtc);
goto cleanup0;
}
rename_region(ports, dev_name(&cmos_rtc.rtc->dev));
spin_lock_irq(&rtc_lock);
cmos_rtc.rtc->irq_freq = 1024;
hpet_set_periodic_freq(cmos_rtc.rtc->irq_freq);
CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT);
cmos_irq_disable(&cmos_rtc, RTC_PIE | RTC_AIE | RTC_UIE);
rtc_control = CMOS_READ(RTC_CONTROL);
spin_unlock_irq(&rtc_lock);
if (is_valid_irq(rtc_irq) && !(rtc_control & RTC_24H)) {
dev_warn(dev, "only 24-hr supported\n");
retval = -ENXIO;
goto cleanup1;
}
if (is_valid_irq(rtc_irq)) {
irq_handler_t rtc_cmos_int_handler;
if (is_hpet_enabled()) {
int err;
rtc_cmos_int_handler = hpet_rtc_interrupt;
err = hpet_register_irq_handler(cmos_interrupt);
if (err != 0) {
printk(KERN_WARNING "hpet_register_irq_handler "
" failed in rtc_init().");
goto cleanup1;
}
} else
rtc_cmos_int_handler = cmos_interrupt;
retval = request_irq(rtc_irq, rtc_cmos_int_handler,
0, dev_name(&cmos_rtc.rtc->dev),
cmos_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
goto cleanup1;
}
}
hpet_rtc_timer_init();
nvram.size = address_space - NVRAM_OFFSET;
retval = sysfs_create_bin_file(&dev->kobj, &nvram);
if (retval < 0) {
dev_dbg(dev, "can't create nvram file? %d\n", retval);
goto cleanup2;
}
pr_info("%s: %s%s, %zd bytes nvram%s\n",
dev_name(&cmos_rtc.rtc->dev),
!is_valid_irq(rtc_irq) ? "no alarms" :
cmos_rtc.mon_alrm ? "alarms up to one year" :
cmos_rtc.day_alrm ? "alarms up to one month" :
"alarms up to one day",
cmos_rtc.century ? ", y3k" : "",
nvram.size,
is_hpet_enabled() ? ", hpet irqs" : "");
return 0;
cleanup2:
if (is_valid_irq(rtc_irq))
free_irq(rtc_irq, cmos_rtc.rtc);
cleanup1:
cmos_rtc.dev = NULL;
rtc_device_unregister(cmos_rtc.rtc);
cleanup0:
release_region(ports->start, resource_size(ports));
return retval;
}
static int INITSECTION
cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
{
struct cmos_rtc_board_info *info = dev->platform_data;
int retval = 0;
unsigned char rtc_control;
/* there can be only one ... */
if (cmos_rtc.dev)
return -EBUSY;
if (!ports)
return -ENODEV;
cmos_rtc.irq = rtc_irq;
cmos_rtc.iomem = ports;
/* For ACPI systems the info comes from the FADT. On others,
* board specific setup provides it as appropriate.
*/
if (info) {
cmos_rtc.day_alrm = info->rtc_day_alarm;
cmos_rtc.mon_alrm = info->rtc_mon_alarm;
cmos_rtc.century = info->rtc_century;
}
cmos_rtc.rtc = rtc_device_register(driver_name, dev,
&cmos_rtc_ops, THIS_MODULE);
if (IS_ERR(cmos_rtc.rtc))
return PTR_ERR(cmos_rtc.rtc);
cmos_rtc.dev = dev;
dev_set_drvdata(dev, &cmos_rtc);
/* platform and pnp busses handle resources incompatibly.
*
* REVISIT for non-x86 systems we may need to handle io memory
* resources: ioremap them, and request_mem_region().
*/
if (is_pnpacpi()) {
retval = request_resource(&ioport_resource, ports);
if (retval < 0) {
dev_dbg(dev, "i/o registers already in use\n");
goto cleanup0;
}
}
rename_region(ports, cmos_rtc.rtc->class_dev.class_id);
spin_lock_irq(&rtc_lock);
/* force periodic irq to CMOS reset default of 1024Hz;
*
* REVISIT it's been reported that at least one x86_64 ALI mobo
* doesn't use 32KHz here ... for portability we might need to
* do something about other clock frequencies.
*/
CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT);
cmos_rtc.rtc->irq_freq = 1024;
/* disable irqs.
*
* NOTE after changing RTC_xIE bits we always read INTR_FLAGS;
* allegedly some older rtcs need that to handle irqs properly
*/
rtc_control = CMOS_READ(RTC_CONTROL);
rtc_control &= ~(RTC_PIE | RTC_AIE | RTC_UIE);
CMOS_WRITE(rtc_control, RTC_CONTROL);
CMOS_READ(RTC_INTR_FLAGS);
spin_unlock_irq(&rtc_lock);
/* FIXME teach the alarm code how to handle binary mode;
* <asm-generic/rtc.h> doesn't know 12-hour mode either.
*/
if (!(rtc_control & RTC_24H) || (rtc_control & (RTC_DM_BINARY))) {
dev_dbg(dev, "only 24-hr BCD mode supported\n");
retval = -ENXIO;
goto cleanup1;
}
if (is_valid_irq(rtc_irq))
retval = request_irq(rtc_irq, cmos_interrupt, IRQF_DISABLED,
cmos_rtc.rtc->class_dev.class_id,
&cmos_rtc.rtc->class_dev);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
goto cleanup1;
}
/* REVISIT optionally make 50 or 114 bytes NVRAM available,
* like rtc-ds1553, rtc-ds1742 ... this will often include
* registers for century, and day/month alarm.
*/
pr_info("%s: alarms up to one %s%s\n",
cmos_rtc.rtc->class_dev.class_id,
is_valid_irq(rtc_irq)
? (cmos_rtc.mon_alrm
? "year"
: (cmos_rtc.day_alrm
? "month" : "day"))
: "no",
cmos_rtc.century ? ", y3k" : ""
);
return 0;
cleanup1:
rename_region(ports, NULL);
cleanup0:
rtc_device_unregister(cmos_rtc.rtc);
return retval;
}
static int INITSECTION
cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
{
struct cmos_rtc_board_info *info = dev->platform_data;
int retval = 0;
unsigned char rtc_control;
/* there can be only one ... */
if (cmos_rtc.dev)
return -EBUSY;
if (!ports)
return -ENODEV;
cmos_rtc.irq = rtc_irq;
cmos_rtc.iomem = ports;
/* For ACPI systems extension info comes from the FADT. On others,
* board specific setup provides it as appropriate. Systems where
* the alarm IRQ isn't automatically a wakeup IRQ (like ACPI, and
* some almost-clones) can provide hooks to make that behave.
*/
if (info) {
cmos_rtc.day_alrm = info->rtc_day_alarm;
cmos_rtc.mon_alrm = info->rtc_mon_alarm;
cmos_rtc.century = info->rtc_century;
if (info->wake_on && info->wake_off) {
cmos_rtc.wake_on = info->wake_on;
cmos_rtc.wake_off = info->wake_off;
}
}
cmos_rtc.rtc = rtc_device_register(driver_name, dev,
&cmos_rtc_ops, THIS_MODULE);
if (IS_ERR(cmos_rtc.rtc))
return PTR_ERR(cmos_rtc.rtc);
cmos_rtc.dev = dev;
dev_set_drvdata(dev, &cmos_rtc);
/* platform and pnp busses handle resources incompatibly.
*
* REVISIT for non-x86 systems we may need to handle io memory
* resources: ioremap them, and request_mem_region().
*/
if (is_pnp()) {
retval = request_resource(&ioport_resource, ports);
if (retval < 0) {
dev_dbg(dev, "i/o registers already in use\n");
goto cleanup0;
}
}
rename_region(ports, cmos_rtc.rtc->dev.bus_id);
#ifdef CONFIG_ARCH_GEN3
/* MOSAIC WORKAROUND
* some of our boxes shipped with unexpected CMOS RTC mode bits
* if this is detected, reset the RTC to a known point
*/
spin_lock_irq(&rtc_lock);
rtc_control = CMOS_READ(RTC_CONTROL);
if (!(rtc_control & RTC_24H) || (rtc_control & (RTC_DM_BINARY))) {
struct rtc_time t;
printk(KERN_INFO "Fixing bogus CMOS RTC mode\n");
rtc_control |= RTC_24H;
rtc_control &= ~RTC_DM_BINARY;
CMOS_WRITE(rtc_control, RTC_CONTROL);
memset(&t, 0, sizeof(t));
t.tm_mday = 1;
t.tm_year = 109;
spin_unlock_irq(&rtc_lock);
set_rtc_time(&t);
} else {
spin_unlock_irq(&rtc_lock);
}
#endif
spin_lock_irq(&rtc_lock);
/* force periodic irq to CMOS reset default of 1024Hz;
*
* REVISIT it's been reported that at least one x86_64 ALI mobo
* doesn't use 32KHz here ... for portability we might need to
* do something about other clock frequencies.
*/
CMOS_WRITE(RTC_REF_CLCK_32KHZ | 0x06, RTC_FREQ_SELECT);
cmos_rtc.rtc->irq_freq = 1024;
/* disable irqs.
*
* NOTE after changing RTC_xIE bits we always read INTR_FLAGS;
* allegedly some older rtcs need that to handle irqs properly
*/
rtc_control = CMOS_READ(RTC_CONTROL);
rtc_control &= ~(RTC_PIE | RTC_AIE | RTC_UIE);
CMOS_WRITE(rtc_control, RTC_CONTROL);
CMOS_READ(RTC_INTR_FLAGS);
spin_unlock_irq(&rtc_lock);
/* FIXME teach the alarm code how to handle binary mode;
* <asm-generic/rtc.h> doesn't know 12-hour mode either.
*/
if (!(rtc_control & RTC_24H) || (rtc_control & (RTC_DM_BINARY))) {
dev_dbg(dev, "only 24-hr BCD mode supported\n");
retval = -ENXIO;
goto cleanup1;
}
if (is_valid_irq(rtc_irq))
retval = request_irq(rtc_irq, cmos_interrupt, IRQF_DISABLED,
cmos_rtc.rtc->dev.bus_id,
cmos_rtc.rtc);
if (retval < 0) {
dev_dbg(dev, "IRQ %d is already in use\n", rtc_irq);
goto cleanup1;
}
/* REVISIT optionally make 50 or 114 bytes NVRAM available,
* like rtc-ds1553, rtc-ds1742 ... this will often include
* registers for century, and day/month alarm.
*/
pr_info("%s: alarms up to one %s%s\n",
cmos_rtc.rtc->dev.bus_id,
is_valid_irq(rtc_irq)
? (cmos_rtc.mon_alrm
? "year"
: (cmos_rtc.day_alrm
? "month" : "day"))
: "no",
cmos_rtc.century ? ", y3k" : ""
);
return 0;
cleanup1:
rename_region(ports, NULL);
cleanup0:
rtc_device_unregister(cmos_rtc.rtc);
return retval;
}