[POWERPC] ps3: add interrupt alloc for outlets

PS3 interrupt core update:
  - Add ps3_alloc_irq() and ps3_free_irq(), to allocate a virtual interrupt
    number for an interrupt outlet, which is needed by the PS3 GPU frame
    buffer device and audio drivers

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com>
Acked-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 14 insertions, 10 deletions

diff --git a/arch/powerpc/platforms/ps3/interrupt.c b/arch/powerpc/platforms/ps3/interrupt.c
index 27afd1f0358a..3735cd14f614 100644
--- a/arch/powerpc/platforms/ps3/interrupt.c
+++ b/arch/powerpc/platforms/ps3/interrupt.c
@@ -85,7 +85,7 @@ struct ps3_private {
 
 static DEFINE_PER_CPU(struct ps3_private, ps3_private);
 
-static int ps3_connect_irq(enum ps3_cpu_binding cpu, unsigned long outlet,
+int ps3_alloc_irq(enum ps3_cpu_binding cpu, unsigned long outlet,
         unsigned int *virq)
 {
         int result;
@@ -138,8 +138,9 @@ fail_connect:
 fail_create:
         return result;
 }
+EXPORT_SYMBOL_GPL(ps3_alloc_irq);
 
-static void ps3_disconnect_irq(unsigned int virq)
+int ps3_free_irq(unsigned int virq)
 {
         int result;
         const struct ps3_private *pd = get_irq_chip_data(virq);
@@ -155,7 +156,9 @@ static void ps3_disconnect_irq(unsigned int virq)
 
         set_irq_chip_data(virq, NULL);
         irq_dispose_mapping(virq);
+        return result;
 }
+EXPORT_SYMBOL_GPL(ps3_free_irq);
 
 /**
  * ps3_alloc_io_irq - Assign a virq to a system bus device.
@@ -182,7 +185,7 @@ int ps3_alloc_io_irq(enum ps3_cpu_binding cpu, unsigned int interrupt_id,
                 return result;
         }
 
-        result = ps3_connect_irq(cpu, outlet, virq);
+        result = ps3_alloc_irq(cpu, outlet, virq);
         BUG_ON(result);
 
         return result;
@@ -198,7 +201,7 @@ int ps3_free_io_irq(unsigned int virq)
                 pr_debug("%s:%d: lv1_destruct_io_irq_outlet failed: %s\n",
                         __func__, __LINE__, ps3_result(result));
 
-        ps3_disconnect_irq(virq);
+        ps3_free_irq(virq);
 
         return result;
 }
@@ -228,7 +231,7 @@ int ps3_alloc_event_irq(enum ps3_cpu_binding cpu, unsigned int *virq)
                 return result;
         }
 
-        result = ps3_connect_irq(cpu, outlet, virq);
+        result = ps3_alloc_irq(cpu, outlet, virq);
         BUG_ON(result);
 
         return result;
@@ -246,7 +249,7 @@ int ps3_free_event_irq(unsigned int virq)
                 pr_debug("%s:%d: lv1_destruct_event_receive_port failed: %s\n",
                         __func__, __LINE__, ps3_result(result));
 
-        ps3_disconnect_irq(virq);
+        ps3_free_irq(virq);
 
         pr_debug(" <- %s:%d\n", __func__, __LINE__);
         return result;
@@ -350,7 +353,7 @@ int ps3_alloc_vuart_irq(enum ps3_cpu_binding cpu, void* virt_addr_bmp,
                 return result;
         }
 
-        result = ps3_connect_irq(cpu, outlet, virq);
+        result = ps3_alloc_irq(cpu, outlet, virq);
         BUG_ON(result);
 
         return result;
@@ -368,7 +371,7 @@ int ps3_free_vuart_irq(unsigned int virq)
                 return result;
         }
 
-        ps3_disconnect_irq(virq);
+        ps3_free_irq(virq);
 
         return result;
 }
@@ -399,7 +402,7 @@ int ps3_alloc_spe_irq(enum ps3_cpu_binding cpu, unsigned long spe_id,
                 return result;
         }
 
-        result = ps3_connect_irq(cpu, outlet, virq);
+        result = ps3_alloc_irq(cpu, outlet, virq);
         BUG_ON(result);
 
         return result;
@@ -407,10 +410,11 @@ int ps3_alloc_spe_irq(enum ps3_cpu_binding cpu, unsigned long spe_id,
 
 int ps3_free_spe_irq(unsigned int virq)
 {
-        ps3_disconnect_irq(virq);
+        ps3_free_irq(virq);
         return 0;
 }
 
+
 #define PS3_INVALID_OUTLET ((irq_hw_number_t)-1)
 #define PS3_PLUG_MAX 63