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path: root/drivers/macintosh/via-cuda.c
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Diffstat (limited to 'drivers/macintosh/via-cuda.c')
-rw-r--r--drivers/macintosh/via-cuda.c74
1 files changed, 41 insertions, 33 deletions
diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c
index 62dd1fdafecf..971bc9582a5f 100644
--- a/drivers/macintosh/via-cuda.c
+++ b/drivers/macintosh/via-cuda.c
@@ -89,7 +89,6 @@ static int cuda_fully_inited;
#ifdef CONFIG_ADB
static int cuda_probe(void);
-static int cuda_init(void);
static int cuda_send_request(struct adb_request *req, int sync);
static int cuda_adb_autopoll(int devs);
static int cuda_reset_adb_bus(void);
@@ -107,17 +106,42 @@ int cuda_request(struct adb_request *req,
#ifdef CONFIG_ADB
struct adb_driver via_cuda_driver = {
- "CUDA",
- cuda_probe,
- cuda_init,
- cuda_send_request,
- cuda_adb_autopoll,
- cuda_poll,
- cuda_reset_adb_bus
+ .name = "CUDA",
+ .probe = cuda_probe,
+ .send_request = cuda_send_request,
+ .autopoll = cuda_adb_autopoll,
+ .poll = cuda_poll,
+ .reset_bus = cuda_reset_adb_bus,
};
#endif /* CONFIG_ADB */
-#ifdef CONFIG_PPC
+#ifdef CONFIG_MAC
+int __init find_via_cuda(void)
+{
+ struct adb_request req;
+ int err;
+
+ if (macintosh_config->adb_type != MAC_ADB_CUDA)
+ return 0;
+
+ via = via1;
+ cuda_state = idle;
+
+ err = cuda_init_via();
+ if (err) {
+ printk(KERN_ERR "cuda_init_via() failed\n");
+ via = NULL;
+ return 0;
+ }
+
+ /* enable autopoll */
+ cuda_request(&req, NULL, 3, CUDA_PACKET, CUDA_AUTOPOLL, 1);
+ while (!req.complete)
+ cuda_poll();
+
+ return 1;
+}
+#else
int __init find_via_cuda(void)
{
struct adb_request req;
@@ -175,7 +199,7 @@ int __init find_via_cuda(void)
vias = NULL;
return 0;
}
-#endif /* CONFIG_PPC */
+#endif /* !defined CONFIG_MAC */
static int __init via_cuda_start(void)
{
@@ -184,14 +208,14 @@ static int __init via_cuda_start(void)
#ifdef CONFIG_MAC
cuda_irq = IRQ_MAC_ADB;
-#else /* CONFIG_MAC */
+#else
cuda_irq = irq_of_parse_and_map(vias, 0);
if (cuda_irq == NO_IRQ) {
printk(KERN_ERR "via-cuda: can't map interrupts for %s\n",
vias->full_name);
return -ENODEV;
}
-#endif /* CONFIG_MAC */
+#endif
if (request_irq(cuda_irq, cuda_interrupt, 0, "ADB", cuda_interrupt)) {
printk(KERN_ERR "via-cuda: can't request irq %d\n", cuda_irq);
@@ -216,28 +240,10 @@ cuda_probe(void)
#else
if (macintosh_config->adb_type != MAC_ADB_CUDA)
return -ENODEV;
- via = via1;
#endif
- return 0;
-}
-
-static int __init
-cuda_init(void)
-{
-#ifdef CONFIG_PPC
if (via == NULL)
return -ENODEV;
return 0;
-#else
- int err = cuda_init_via();
- if (err) {
- printk(KERN_ERR "cuda_init_via() failed\n");
- return -ENODEV;
- }
- out_8(&via[IER], IER_SET|SR_INT); /* enable interrupt from SR */
-
- return via_cuda_start();
-#endif
}
#endif /* CONFIG_ADB */
@@ -430,9 +436,11 @@ cuda_poll(void)
/* cuda_interrupt only takes a normal lock, we disable
* interrupts here to avoid re-entering and thus deadlocking.
*/
- disable_irq(cuda_irq);
+ if (cuda_irq)
+ disable_irq(cuda_irq);
cuda_interrupt(0, NULL);
- enable_irq(cuda_irq);
+ if (cuda_irq)
+ enable_irq(cuda_irq);
}
static irqreturn_t
@@ -446,7 +454,7 @@ cuda_interrupt(int irq, void *arg)
spin_lock(&cuda_lock);
- /* On powermacs, this handler is registered for the VIA IRQ. But it uses
+ /* On powermacs, this handler is registered for the VIA IRQ. But they use
* just the shift register IRQ -- other VIA interrupt sources are disabled.
* On m68k macs, the VIA IRQ sources are dispatched individually. Unless
* we are polling, the shift register IRQ flag has already been cleared.