Merge branch 'merge'
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index 6f35860..090e40f 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -75,9 +75,11 @@
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 @@
*/
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 @@
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 @@
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 @@
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 @@
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 @@
}
}
+ 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 @@
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;
}