Current code always select _CNL_AUX_ANAOVRD1_B
register regardless the pw in use.

CNL_DISP_PW_AUX_B = 9
CNL_DISP_PW_AUX_C = 10
CNL_DISP_PW_AUX_D = 11

And for pick we want

B = 0
C = 1
D = 2

Fixes: ddd39e4b3f8f ("drm/i915/cnl: apply Display WA #1178 to fix type C 
dongles")
Cc: Lucas De Marchi <lucas.demar...@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.v...@intel.com>
---
 drivers/gpu/drm/i915/i915_reg.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index abd9ee876186..42ced2f3ae7e 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8422,7 +8422,7 @@ enum skl_power_gate {
 #define  SKL_PW_TO_PG(pw)                      ((pw) - SKL_DISP_PW_1 + SKL_PG1)
 #define  SKL_FUSE_PG_DIST_STATUS(pg)           (1 << (27 - (pg)))
 
-#define _CNL_AUX_REG_IDX(pw)           ((pw - 1) >> 4)
+#define _CNL_AUX_REG_IDX(pw)           ((pw) - 9)
 #define _CNL_AUX_ANAOVRD1_B            0x162250
 #define _CNL_AUX_ANAOVRD1_C            0x162210
 #define _CNL_AUX_ANAOVRD1_D            0x1622D0
-- 
2.13.6

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