ps3fb: Tear down FB setup during cleanup

During cleanup, use L1GPU_CONTEXT_ATTRIBUTE_FB_CLOSE to tear down the setup
done by L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP.

This allows unloading and reloading of ps3fb while the sound driver keeps the
GPU open.

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: linux-fbdev-devel@lists.sourceforge.net
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

2 files changed, 12 insertions, 1 deletions

diff --git a/arch/powerpc/include/asm/ps3gpu.h b/arch/powerpc/include/asm/ps3gpu.h
index 1037efae4a51..b2b89591907c 100644
--- a/arch/powerpc/include/asm/ps3gpu.h
+++ b/arch/powerpc/include/asm/ps3gpu.h
@@ -31,6 +31,7 @@
 #define L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP        0x600
 #define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT         0x601
 #define L1GPU_CONTEXT_ATTRIBUTE_FB_BLIT_SYNC    0x602
+#define L1GPU_CONTEXT_ATTRIBUTE_FB_CLOSE        0x603
 
 #define L1GPU_FB_BLIT_WAIT_FOR_COMPLETION       (1ULL << 32)
 
@@ -75,4 +76,11 @@ static inline int lv1_gpu_fb_blit(u64 context_handle, u64 ddr_offset,
                                          pitch);
 }
 
+static inline int lv1_gpu_fb_close(u64 context_handle)
+{
+        return lv1_gpu_context_attribute(context_handle,
+                                         L1GPU_CONTEXT_ATTRIBUTE_FB_CLOSE, 0,
+                                         0, 0, 0);
+}
+
 #endif /* _ASM_POWERPC_PS3GPU_H */
diff --git a/drivers/video/ps3fb.c b/drivers/video/ps3fb.c
index 13c876c6e32c..1baa1c93a224 100644
--- a/drivers/video/ps3fb.c
+++ b/drivers/video/ps3fb.c
@@ -1123,7 +1123,7 @@ static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
 
         info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core);
         if (!info)
-                goto err_context_unmap;
+                goto err_context_fb_close;
 
         par = info->par;
         par->mode_id = ~ps3fb_mode;     /* != ps3fb_mode, to trigger change */
@@ -1188,6 +1188,8 @@ err_fb_dealloc:
         fb_dealloc_cmap(&info->cmap);
 err_framebuffer_release:
         framebuffer_release(info);
+err_context_fb_close:
+        lv1_gpu_fb_close(ps3fb.context_handle);
 err_context_unmap:
         lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
                               ps3fb_videomemory.size, CBE_IOPTE_M);
@@ -1233,6 +1235,7 @@ static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
                 info = dev->core.driver_data = NULL;
         }
         iounmap((u8 __force __iomem *)ps3fb.dinfo);
+        lv1_gpu_fb_close(ps3fb.context_handle);
         lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF, xdr_lpar,
                               ps3fb_videomemory.size, CBE_IOPTE_M);
         lv1_gpu_context_free(ps3fb.context_handle);