[PATCH 2/2] etnaviv: use stream count from VIVS_HI_CHIP_SPECS_4

[Christian Gmeiner]

Freescales v5 kernel driver reads stream count from SPECS_4 register
and if that value is 0 it falls back to the value from CHIP_SPECS.

Signed-off-by: Christian Gmeiner <christian.gmeiner at gmail.com>
---
 drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
index e4f6008..926e369 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -133,10 +133,17 @@ static void etnaviv_hw_specs(struct etnaviv_gpu *gpu)
 		specs[0] = gpu_read(gpu, VIVS_HI_CHIP_SPECS);
 		specs[1] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_2);
 		specs[2] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_3);
+		specs[3] = gpu_read(gpu, VIVS_HI_CHIP_SPECS_4);
 
 		gpu->identity.stream_count =
-			(specs[0] & VIVS_HI_CHIP_SPECS_STREAM_COUNT__MASK)
-				>> VIVS_HI_CHIP_SPECS_STREAM_COUNT__SHIFT;
+			(specs[3] & VIVS_HI_CHIP_SPECS_4_STREAM_COUNT__MASK)
+				>> VIVS_HI_CHIP_SPECS_4_STREAM_COUNT__SHIFT;
+
+		if (gpu->identity.stream_count == 0)
+			gpu->identity.stream_count =
+				(specs[0] & VIVS_HI_CHIP_SPECS_STREAM_COUNT__MASK)
+					>> VIVS_HI_CHIP_SPECS_STREAM_COUNT__SHIFT;
+
 		gpu->identity.register_max =
 			(specs[0] & VIVS_HI_CHIP_SPECS_REGISTER_MAX__MASK)
 				>> VIVS_HI_CHIP_SPECS_REGISTER_MAX__SHIFT;
-- 
2.5.0