Merge branch 'merge'

6 files changed, 114 insertions, 67 deletions

diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
index dc6003859e5..d5d649f5ccd 100644
--- a/drivers/macintosh/Kconfig
+++ b/drivers/macintosh/Kconfig
@@ -109,7 +109,7 @@ config PMAC_SMU
 
 config PMAC_APM_EMU
 	tristate "APM emulation"
-	depends on PPC_PMAC && PPC32 && PM
+	depends on PPC_PMAC && PPC32 && PM && ADB_PMU
 
 config PMAC_MEDIABAY
 	bool "Support PowerBook hotswap media bay"
@@ -122,7 +122,8 @@ config PMAC_MEDIABAY
 
 config PMAC_BACKLIGHT
 	bool "Backlight control for LCD screens"
-	depends on ADB_PMU && (BROKEN || !PPC64)
+	depends on ADB_PMU && FB = y && (BROKEN || !PPC64)
+	select FB_BACKLIGHT
 	help
 	  Say Y here to enable Macintosh specific extensions of the generic
 	  backlight code. With this enabled, the brightness keys on older
diff --git a/drivers/macintosh/adbhid.c b/drivers/macintosh/adbhid.c
index 545be1ed692..c69d23bb255 100644
--- a/drivers/macintosh/adbhid.c
+++ b/drivers/macintosh/adbhid.c
@@ -45,14 +45,11 @@
 #include <linux/pmu.h>
 
 #include <asm/machdep.h>
+#include <asm/backlight.h>
 #ifdef CONFIG_PPC_PMAC
 #include <asm/pmac_feature.h>
 #endif
 
-#ifdef CONFIG_PMAC_BACKLIGHT
-#include <asm/backlight.h>
-#endif
-
 MODULE_AUTHOR("Franz Sirl <Franz.Sirl-kernel@lauterbach.com>");
 
 #define KEYB_KEYREG	0	/* register # for key up/down data */
@@ -237,11 +234,6 @@ static struct adb_ids keyboard_ids;
 static struct adb_ids mouse_ids;
 static struct adb_ids buttons_ids;
 
-#ifdef CONFIG_PMAC_BACKLIGHT
-/* Exported to via-pmu.c */
-int disable_kernel_backlight = 0;
-#endif /* CONFIG_PMAC_BACKLIGHT */
-
 /* Kind of keyboard, see Apple technote 1152  */
 #define ADB_KEYBOARD_UNKNOWN	0
 #define ADB_KEYBOARD_ANSI	0x0100
@@ -527,7 +519,7 @@ adbhid_buttons_input(unsigned char *data, int nb, struct pt_regs *regs, int auto
 
 		case 0xa:	/* brightness decrease */
 #ifdef CONFIG_PMAC_BACKLIGHT
-			if (!disable_kernel_backlight && down)
+			if (down)
 				pmac_backlight_key_down();
 #endif
 			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSDOWN, down);
@@ -535,7 +527,7 @@ adbhid_buttons_input(unsigned char *data, int nb, struct pt_regs *regs, int auto
 
 		case 0x9:	/* brightness increase */
 #ifdef CONFIG_PMAC_BACKLIGHT
-			if (!disable_kernel_backlight && down)
+			if (down)
 				pmac_backlight_key_up();
 #endif
 			input_report_key(adbhid[id]->input, KEY_BRIGHTNESSUP, down);
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index 7817cf286d0..d5621606754 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -332,7 +332,7 @@ static void macio_create_fixup_irq(struct macio_dev *dev, int index,
 {
 	unsigned int irq;
 
-	irq = irq_create_mapping(NULL, line, 0);
+	irq = irq_create_mapping(NULL, line);
 	if (irq != NO_IRQ) {
 		dev->interrupt[index].start = irq;
 		dev->interrupt[index].flags = IORESOURCE_IRQ;
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index 6f358600536..090e40fc501 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -75,9 +75,11 @@ struct smu_device {
 	struct of_device	*of_dev;
 	int			doorbell;	/* doorbell gpio */
 	u32 __iomem		*db_buf;	/* doorbell buffer */
-	int			db_irq;
+	struct device_node	*db_node;
+	unsigned int		db_irq;
 	int			msg;
-	int			msg_irq;
+	struct device_node	*msg_node;
+	unsigned int		msg_irq;
 	struct smu_cmd_buf	*cmd_buf;	/* command buffer virtual */
 	u32			cmd_buf_abs;	/* command buffer absolute */
 	struct list_head	cmd_list;
@@ -93,6 +95,7 @@ struct smu_device {
  */
 static struct smu_device	*smu;
 static DEFINE_MUTEX(smu_part_access);
+static int smu_irq_inited;
 
 static void smu_i2c_retry(unsigned long data);
 
@@ -257,6 +260,10 @@ int smu_queue_cmd(struct smu_cmd *cmd)
 		smu_start_cmd();
 	spin_unlock_irqrestore(&smu->lock, flags);
 
+	/* Workaround for early calls when irq isn't available */
+	if (!smu_irq_inited || smu->db_irq == NO_IRQ)
+		smu_spinwait_cmd(cmd);
+
 	return 0;
 }
 EXPORT_SYMBOL(smu_queue_cmd);
@@ -478,14 +485,15 @@ int __init smu_init (void)
 	smu->cmd_buf_abs = (u32)smu_cmdbuf_abs;
 	smu->cmd_buf = (struct smu_cmd_buf *)abs_to_virt(smu_cmdbuf_abs);
 
-	np = of_find_node_by_name(NULL, "smu-doorbell");
-	if (np == NULL) {
+	smu->db_node = of_find_node_by_name(NULL, "smu-doorbell");
+	if (smu->db_node == NULL) {
 		printk(KERN_ERR "SMU: Can't find doorbell GPIO !\n");
 		goto fail;
 	}
-	data = get_property(np, "reg", NULL);
+	data = get_property(smu->db_node, "reg", NULL);
 	if (data == NULL) {
-		of_node_put(np);
+		of_node_put(smu->db_node);
+		smu->db_node = NULL;
 		printk(KERN_ERR "SMU: Can't find doorbell GPIO address !\n");
 		goto fail;
 	}
@@ -497,25 +505,21 @@ int __init smu_init (void)
 	smu->doorbell = *data;
 	if (smu->doorbell < 0x50)
 		smu->doorbell += 0x50;
-	smu->db_irq = irq_of_parse_and_map(np, 0);
-
-	of_node_put(np);
 
 	/* Now look for the smu-interrupt GPIO */
 	do {
-		np = of_find_node_by_name(NULL, "smu-interrupt");
-		if (np == NULL)
+		smu->msg_node = of_find_node_by_name(NULL, "smu-interrupt");
+		if (smu->msg_node == NULL)
 			break;
-		data = get_property(np, "reg", NULL);
+		data = get_property(smu->msg_node, "reg", NULL);
 		if (data == NULL) {
-			of_node_put(np);
+			of_node_put(smu->msg_node);
+			smu->msg_node = NULL;
 			break;
 		}
 		smu->msg = *data;
 		if (smu->msg < 0x50)
 			smu->msg += 0x50;
-		smu->msg_irq = irq_of_parse_and_map(np, 0);
-		of_node_put(np);
 	} while(0);
 
 	/* Doorbell buffer is currently hard-coded, I didn't find a proper
@@ -547,6 +551,19 @@ static int smu_late_init(void)
 	smu->i2c_timer.function = smu_i2c_retry;
 	smu->i2c_timer.data = (unsigned long)smu;
 
+	if (smu->db_node) {
+		smu->db_irq = irq_of_parse_and_map(smu->db_node, 0);
+		if (smu->db_irq == NO_IRQ)
+			printk(KERN_ERR "smu: failed to map irq for node %s\n",
+			       smu->db_node->full_name);
+	}
+	if (smu->msg_node) {
+		smu->msg_irq = irq_of_parse_and_map(smu->msg_node, 0);
+		if (smu->msg_irq == NO_IRQ)
+			printk(KERN_ERR "smu: failed to map irq for node %s\n",
+			       smu->msg_node->full_name);
+	}
+
 	/*
 	 * Try to request the interrupts
 	 */
@@ -571,6 +588,7 @@ static int smu_late_init(void)
 		}
 	}
 
+	smu_irq_inited = 1;
 	return 0;
 }
 /* This has to be before arch_initcall as the low i2c stuff relies on the
@@ -742,6 +760,11 @@ static void smu_i2c_low_completion(struct smu_cmd *scmd, void *misc)
 	if (fail && --cmd->retries > 0) {
 		DPRINTK("SMU: i2c failure, starting timer...\n");
 		BUG_ON(cmd != smu->cmd_i2c_cur);
+		if (!smu_irq_inited) {
+			mdelay(5);
+			smu_i2c_retry(0);
+			return;
+		}
 		mod_timer(&smu->i2c_timer, jiffies + msecs_to_jiffies(5));
 		return;
 	}
diff --git a/drivers/macintosh/via-pmu-backlight.c b/drivers/macintosh/via-pmu-backlight.c
index b42d05f2aaf..d3f8d75bcbb 100644
--- a/drivers/macintosh/via-pmu-backlight.c
+++ b/drivers/macintosh/via-pmu-backlight.c
@@ -15,8 +15,9 @@
 
 #define MAX_PMU_LEVEL 0xFF
 
-static struct device_node *vias;
 static struct backlight_properties pmu_backlight_data;
+static spinlock_t pmu_backlight_lock;
+static int sleeping;
 
 static int pmu_backlight_get_level_brightness(struct fb_info *info,
 		int level)
@@ -40,23 +41,36 @@ static int pmu_backlight_update_status(struct backlight_device *bd)
 {
 	struct fb_info *info = class_get_devdata(&bd->class_dev);
 	struct adb_request req;
-	int pmulevel, level = bd->props->brightness;
+	unsigned long flags;
+	int level = bd->props->brightness;
 
-	if (vias == NULL)
-		return -ENODEV;
+	spin_lock_irqsave(&pmu_backlight_lock, flags);
+
+	/* Don't update brightness when sleeping */
+	if (sleeping)
+		goto out;
 
 	if (bd->props->power != FB_BLANK_UNBLANK ||
 	    bd->props->fb_blank != FB_BLANK_UNBLANK)
 		level = 0;
 
-	pmulevel = pmu_backlight_get_level_brightness(info, level);
+	if (level > 0) {
+		int pmulevel = pmu_backlight_get_level_brightness(info, level);
 
-	pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT, pmulevel);
-	pmu_wait_complete(&req);
+		pmu_request(&req, NULL, 2, PMU_BACKLIGHT_BRIGHT, pmulevel);
+		pmu_wait_complete(&req);
 
-	pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
-		PMU_POW_BACKLIGHT | (level > 0 ? PMU_POW_ON : PMU_POW_OFF));
-	pmu_wait_complete(&req);
+		pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
+			PMU_POW_BACKLIGHT | PMU_POW_ON);
+		pmu_wait_complete(&req);
+	} else {
+		pmu_request(&req, NULL, 2, PMU_POWER_CTRL,
+			PMU_POW_BACKLIGHT | PMU_POW_OFF);
+		pmu_wait_complete(&req);
+	}
+
+out:
+	spin_unlock_irqrestore(&pmu_backlight_lock, flags);
 
 	return 0;
 }
@@ -73,15 +87,39 @@ static struct backlight_properties pmu_backlight_data = {
 	.max_brightness	= (FB_BACKLIGHT_LEVELS - 1),
 };
 
-void __init pmu_backlight_init(struct device_node *in_vias)
+#ifdef CONFIG_PM
+static int pmu_backlight_sleep_call(struct pmu_sleep_notifier *self, int when)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&pmu_backlight_lock, flags);
+
+	switch (when) {
+	case PBOOK_SLEEP_REQUEST:
+		sleeping = 1;
+		break;
+	case PBOOK_WAKE:
+		sleeping = 0;
+		break;
+	}
+
+	spin_unlock_irqrestore(&pmu_backlight_lock, flags);
+
+	return PBOOK_SLEEP_OK;
+}
+
+static struct pmu_sleep_notifier pmu_backlight_sleep_notif = {
+	.notifier_call = pmu_backlight_sleep_call,
+};
+#endif
+
+void __init pmu_backlight_init()
 {
 	struct backlight_device *bd;
 	struct fb_info *info;
 	char name[10];
 	int level, autosave;
 
-	vias = in_vias;
-
 	/* Special case for the old PowerBook since I can't test on it */
 	autosave =
 		machine_is_compatible("AAPL,3400/2400") ||
@@ -141,6 +179,10 @@ void __init pmu_backlight_init(struct device_node *in_vias)
 		pmac_backlight = bd;
 	mutex_unlock(&pmac_backlight_mutex);
 
+#ifdef CONFIG_PM
+	pmu_register_sleep_notifier(&pmu_backlight_sleep_notif);
+#endif
+
 	printk("pmubl: Backlight initialized (%s)\n", name);
 
 	return;
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 80e88b4a1d0..0df500b9a66 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -16,7 +16,6 @@
  *    a sleep or a freq. switch
  *  - Move sleep code out of here to pmac_pm, merge into new
  *    common PM infrastructure
- *  - Move backlight code out as well
  *  - Save/Restore PCI space properly
  *
  */
@@ -60,9 +59,7 @@
 #include <asm/mmu_context.h>
 #include <asm/cputable.h>
 #include <asm/time.h>
-#ifdef CONFIG_PMAC_BACKLIGHT
 #include <asm/backlight.h>
-#endif
 
 #include "via-pmu-event.h"
 
@@ -177,10 +174,6 @@ static int query_batt_timer = BATTERY_POLLING_COUNT;
 static struct adb_request batt_req;
 static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES];
 
-#if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
-extern int disable_kernel_backlight;
-#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
-
 int __fake_sleep;
 int asleep;
 BLOCKING_NOTIFIER_HEAD(sleep_notifier_list);
@@ -466,7 +459,7 @@ static int __init via_pmu_dev_init(void)
 
 #ifdef CONFIG_PMAC_BACKLIGHT
 	/* Initialize backlight */
-	pmu_backlight_init(vias);
+	pmu_backlight_init();
 #endif
 
 #ifdef CONFIG_PPC32
@@ -1403,11 +1396,8 @@ next:
 	else if ((1 << pirq) & PMU_INT_SNDBRT) {
 #ifdef CONFIG_PMAC_BACKLIGHT
 		if (len == 3)
-#ifdef CONFIG_INPUT_ADBHID
-			if (!disable_kernel_backlight)
-#endif /* CONFIG_INPUT_ADBHID */
-				pmac_backlight_set_legacy_brightness(data[1] >> 4);
-#endif /* CONFIG_PMAC_BACKLIGHT */
+			pmac_backlight_set_legacy_brightness_pmu(data[1] >> 4);
+#endif
 	}
 	/* Tick interrupt */
 	else if ((1 << pirq) & PMU_INT_TICK) {
@@ -2414,7 +2404,7 @@ struct pmu_private {
 	spinlock_t lock;
 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
 	int	backlight_locker;
-#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */	
+#endif
 };
 
 static LIST_HEAD(all_pmu_pvt);
@@ -2464,7 +2454,7 @@ pmu_open(struct inode *inode, struct file *file)
 	spin_lock_irqsave(&all_pvt_lock, flags);
 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
 	pp->backlight_locker = 0;
-#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */	
+#endif
 	list_add(&pp->list, &all_pmu_pvt);
 	spin_unlock_irqrestore(&all_pvt_lock, flags);
 	file->private_data = pp;
@@ -2559,13 +2549,12 @@ pmu_release(struct inode *inode, struct file *file)
 		spin_lock_irqsave(&all_pvt_lock, flags);
 		list_del(&pp->list);
 		spin_unlock_irqrestore(&all_pvt_lock, flags);
+
 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
-		if (pp->backlight_locker) {
-			spin_lock_irqsave(&pmu_lock, flags);
-			disable_kernel_backlight--;
-			spin_unlock_irqrestore(&pmu_lock, flags);
-		}
-#endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */
+		if (pp->backlight_locker)
+			pmac_backlight_enable();
+#endif
+
 		kfree(pp);
 	}
 	unlock_kernel();
@@ -2642,18 +2631,18 @@ pmu_ioctl(struct inode * inode, struct file *filp,
 #ifdef CONFIG_INPUT_ADBHID
 	case PMU_IOC_GRAB_BACKLIGHT: {
 		struct pmu_private *pp = filp->private_data;
-		unsigned long flags;
 
 		if (pp->backlight_locker)
 			return 0;
+
 		pp->backlight_locker = 1;
-		spin_lock_irqsave(&pmu_lock, flags);
-		disable_kernel_backlight++;
-		spin_unlock_irqrestore(&pmu_lock, flags);
+		pmac_backlight_disable();
+
 		return 0;
 	}
 #endif /* CONFIG_INPUT_ADBHID */
 #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */
+
 	case PMU_IOC_GET_MODEL:
 	    	return put_user(pmu_kind, argp);
 	case PMU_IOC_HAS_ADB: