X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Frtc%2Frtc-cmos.c;h=5d760bb6c2cd2100e051dadc9d0bba00c0c8da33;hb=a5b4860b973bb7a306562d8715ba8538a584537d;hp=3fbfdd16191dbaf2851d1cc572ead7e011f50403;hpb=87ac84f42a7a580d0dd72ae31d6a5eb4bfe04c6d;p=linux-2.6

diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 3fbfdd1619..5d760bb6c2 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -235,7 +235,7 @@ static int cmos_set_alarm(struct device *dev, struct rtc_wkalrm *t)
 	return 0;
 }
 
-static int cmos_set_freq(struct device *dev, int freq)
+static int cmos_irq_set_freq(struct device *dev, int freq)
 {
 	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
 	int		f;
@@ -259,6 +259,34 @@ static int cmos_set_freq(struct device *dev, int freq)
 	return 0;
 }
 
+static int cmos_irq_set_state(struct device *dev, int enabled)
+{
+	struct cmos_rtc	*cmos = dev_get_drvdata(dev);
+	unsigned char	rtc_control, rtc_intr;
+	unsigned long	flags;
+
+	if (!is_valid_irq(cmos->irq))
+		return -ENXIO;
+
+	spin_lock_irqsave(&rtc_lock, flags);
+	rtc_control = CMOS_READ(RTC_CONTROL);
+
+	if (enabled)
+		rtc_control |= RTC_PIE;
+	else
+		rtc_control &= ~RTC_PIE;
+
+	CMOS_WRITE(rtc_control, RTC_CONTROL);
+
+	rtc_intr = CMOS_READ(RTC_INTR_FLAGS);
+	rtc_intr &= (rtc_control & RTC_IRQMASK) | RTC_IRQF;
+	if (is_intr(rtc_intr))
+		rtc_update_irq(cmos->rtc, 1, rtc_intr);
+
+	spin_unlock_irqrestore(&rtc_lock, flags);
+	return 0;
+}
+
 #if defined(CONFIG_RTC_INTF_DEV) || defined(CONFIG_RTC_INTF_DEV_MODULE)
 
 static int
@@ -360,7 +388,8 @@ static const struct rtc_class_ops cmos_rtc_ops = {
 	.read_alarm	= cmos_read_alarm,
 	.set_alarm	= cmos_set_alarm,
 	.proc		= cmos_procfs,
-	.irq_set_freq	= cmos_set_freq,
+	.irq_set_freq	= cmos_irq_set_freq,
+	.irq_set_state	= cmos_irq_set_state,
 };
 
 /*----------------------------------------------------------------*/
@@ -383,12 +412,12 @@ static irqreturn_t cmos_interrupt(int irq, void *p)
 		return IRQ_NONE;
 }
 
-#ifdef	CONFIG_PNPACPI
-#define	is_pnpacpi()	1
+#ifdef	CONFIG_PNP
+#define	is_pnp()	1
 #define	INITSECTION
 
 #else
-#define	is_pnpacpi()	0
+#define	is_pnp()	0
 #define	INITSECTION	__init
 #endif
 
@@ -438,7 +467,7 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 	 * REVISIT for non-x86 systems we may need to handle io memory
 	 * resources: ioremap them, and request_mem_region().
 	 */
-	if (is_pnpacpi()) {
+	if (is_pnp()) {
 		retval = request_resource(&ioport_resource, ports);
 		if (retval < 0) {
 			dev_dbg(dev, "i/o registers already in use\n");
@@ -531,7 +560,7 @@ static void __exit cmos_do_remove(struct device *dev)
 
 	cmos_do_shutdown();
 
-	if (is_pnpacpi())
+	if (is_pnp())
 		release_resource(cmos->iomem);
 	rename_region(cmos->iomem, NULL);
 
@@ -630,7 +659,7 @@ static int cmos_resume(struct device *dev)
  * the device node will always be created as a PNPACPI device.
  */
 
-#ifdef	CONFIG_PNPACPI
+#ifdef	CONFIG_PNP
 
 #include <linux/pnp.h>
 
@@ -641,9 +670,16 @@ cmos_pnp_probe(struct pnp_dev *pnp, const struct pnp_device_id *id)
 	 * drivers can't provide shutdown() methods to disable IRQs.
 	 * Or better yet, fix PNP to allow those methods...
 	 */
-	return cmos_do_probe(&pnp->dev,
-			&pnp->res.port_resource[0],
-			pnp->res.irq_resource[0].start);
+	if (pnp_port_start(pnp,0) == 0x70 && !pnp_irq_valid(pnp,0))
+		/* Some machines contain a PNP entry for the RTC, but
+		 * don't define the IRQ. It should always be safe to
+		 * hardcode it in these cases
+		 */
+		return cmos_do_probe(&pnp->dev, &pnp->res.port_resource[0], 8);
+	else
+		return cmos_do_probe(&pnp->dev,
+				     &pnp->res.port_resource[0],
+				     pnp->res.irq_resource[0].start);
 }
 
 static void __exit cmos_pnp_remove(struct pnp_dev *pnp)
@@ -701,11 +737,11 @@ static void __exit cmos_exit(void)
 }
 module_exit(cmos_exit);
 
-#else	/* no PNPACPI */
+#else	/* no PNP */
 
 /*----------------------------------------------------------------*/
 
-/* Platform setup should have set up an RTC device, when PNPACPI is
+/* Platform setup should have set up an RTC device, when PNP is
  * unavailable ... this could happen even on (older) PCs.
  */
 
@@ -751,7 +787,7 @@ static void __exit cmos_exit(void)
 module_exit(cmos_exit);
 
 
-#endif	/* !PNPACPI */
+#endif	/* !PNP */
 
 MODULE_AUTHOR("David Brownell");
 MODULE_DESCRIPTION("Driver for PC-style 'CMOS' RTCs");