[Intel-gfx] [BXT DMC PATCHES 3/3] drm/i915/bxt: Stepping info added for bxt.

[Animesh Manna]

Added stepping info in intel_csr.c which is required to extract
specific firmware from packaged dmc firmware.

Stepping info is aligned with current bspec info.

Cc: Vetter, Daniel <daniel.vetter at intel.com>
Cc: Damien Lespiau <damien.lespiau at intel.com>
Cc: Imre Deak <imre.deak at intel.com>
Cc: Sunil Kamath <sunil.kamath at intel.com>
Signed-off-by: Animesh Manna <animesh.manna at intel.com>
---
 drivers/gpu/drm/i915/intel_csr.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index c89b9ce..06b46b1 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -167,11 +167,19 @@ static const struct stepping_info skl_stepping_info[] = {
 	{'G', '0'}, {'H', '0'}, {'I', '0'}
 };
 
+static struct stepping_info bxt_stepping_info[] = {
+	{'A', '0'}, {'A', '1'}, {'A', '2'},
+	{'B', '0'}, {'B', '1'}, {'B', '2'}
+};
+
 static char intel_get_stepping(struct drm_device *dev)
 {
 	if (IS_SKYLAKE(dev) && (dev->pdev->revision <
 				ARRAY_SIZE(skl_stepping_info)))
 		return skl_stepping_info[dev->pdev->revision].stepping;
+	else if (IS_BROXTON(dev) && (dev->pdev->revision <
+				ARRAY_SIZE(bxt_stepping_info)))
+		return bxt_stepping_info[dev->pdev->revision].stepping;
 	else
 		return -ENODATA;
 }
@@ -181,6 +189,9 @@ static char intel_get_substepping(struct drm_device *dev)
 	if (IS_SKYLAKE(dev) && (dev->pdev->revision <
 				ARRAY_SIZE(skl_stepping_info)))
 		return skl_stepping_info[dev->pdev->revision].substepping;
+	else if (IS_BROXTON(dev) && (dev->pdev->revision <
+			ARRAY_SIZE(bxt_stepping_info)))
+		return bxt_stepping_info[dev->pdev->revision].substepping;
 	else
 		return -ENODATA;
 }
-- 
2.0.2