[Intel-gfx] [PATCH v2] drm/i915/cnl: Fix CNL macros for Voltage Swing programming

[Aditya Swarup]

CNL macros for register groups CNL_PORT_TX_DW2_* / CNL_PORT_TX_DW5_* are
configured incorrectly wrt definition of _CNL_PORT_TX_DW_GRP.

v2: Jani suggested to keep the macros organized semantically i.e., by
function, secondarily by port/pipe/transcoder.->(dw, port)

Cc: Clint Taylor <clinton.a.taylor at intel.com>
Cc: Imre Deak <imre.deak at intel.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Signed-off-by: Aditya Swarup <aditya.swarup at intel.com>
---
There are still inconsistencies in some macro definitions. The macros
for MG phy registers are (port, ln) e.g.,
MG_TX2_LINK_PARAMS(port, ln) and also CNL_PORT_TX_DW4_LN(port, ln)
whereas for ICL -> _ICL_PORT_PCS_DW_LN(dw, ln, port).

Do you feel that we need to make these definitions consistent and what 
should be the sequence -> (dw, ln, port)/(ln, port) or (dw, port, ln)/
(port,ln)?

 drivers/gpu/drm/i915/i915_reg.h | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 44958d994bfa..fad5a9e8b44d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1814,7 +1814,7 @@ enum i915_power_well_id {
 #define _CNL_PORT_TX_C_LN0_OFFSET		0x162C40
 #define _CNL_PORT_TX_D_LN0_OFFSET		0x162E40
 #define _CNL_PORT_TX_F_LN0_OFFSET		0x162840
-#define _CNL_PORT_TX_DW_GRP(port, dw)	(_PICK((port), \
+#define _CNL_PORT_TX_DW_GRP(dw, port)	(_PICK((port), \
 					       _CNL_PORT_TX_AE_GRP_OFFSET, \
 					       _CNL_PORT_TX_B_GRP_OFFSET, \
 					       _CNL_PORT_TX_B_GRP_OFFSET, \
@@ -1822,7 +1822,7 @@ enum i915_power_well_id {
 					       _CNL_PORT_TX_AE_GRP_OFFSET, \
 					       _CNL_PORT_TX_F_GRP_OFFSET) + \
 					       4 * (dw))
-#define _CNL_PORT_TX_DW_LN0(port, dw)	(_PICK((port), \
+#define _CNL_PORT_TX_DW_LN0(dw, port)	(_PICK((port), \
 					       _CNL_PORT_TX_AE_LN0_OFFSET, \
 					       _CNL_PORT_TX_B_LN0_OFFSET, \
 					       _CNL_PORT_TX_B_LN0_OFFSET, \
@@ -1858,9 +1858,9 @@ enum i915_power_well_id {
 
 #define _CNL_PORT_TX_DW4_LN0_AE		0x162450
 #define _CNL_PORT_TX_DW4_LN1_AE		0x1624D0
-#define CNL_PORT_TX_DW4_GRP(port)	_MMIO(_CNL_PORT_TX_DW_GRP((port), 4))
-#define CNL_PORT_TX_DW4_LN0(port)	_MMIO(_CNL_PORT_TX_DW_LN0((port), 4))
-#define CNL_PORT_TX_DW4_LN(port, ln)   _MMIO(_CNL_PORT_TX_DW_LN0((port), 4) + \
+#define CNL_PORT_TX_DW4_GRP(port)	_MMIO(_CNL_PORT_TX_DW_GRP(4, (port)))
+#define CNL_PORT_TX_DW4_LN0(port)	_MMIO(_CNL_PORT_TX_DW_LN0(4, (port)))
+#define CNL_PORT_TX_DW4_LN(port, ln)   _MMIO(_CNL_PORT_TX_DW_LN0(4, (port)) + \
 					   ((ln) * (_CNL_PORT_TX_DW4_LN1_AE - \
 						    _CNL_PORT_TX_DW4_LN0_AE)))
 #define ICL_PORT_TX_DW4_AUX(port)	_MMIO(_ICL_PORT_TX_DW_AUX(4, port))
@@ -1888,8 +1888,8 @@ enum i915_power_well_id {
 #define   RTERM_SELECT(x)		((x) << 3)
 #define   RTERM_SELECT_MASK		(0x7 << 3)
 
-#define CNL_PORT_TX_DW7_GRP(port)	_MMIO(_CNL_PORT_TX_DW_GRP((port), 7))
-#define CNL_PORT_TX_DW7_LN0(port)	_MMIO(_CNL_PORT_TX_DW_LN0((port), 7))
+#define CNL_PORT_TX_DW7_GRP(port)	_MMIO(_CNL_PORT_TX_DW_GRP(7, (port)))
+#define CNL_PORT_TX_DW7_LN0(port)	_MMIO(_CNL_PORT_TX_DW_LN0(7, (port)))
 #define ICL_PORT_TX_DW7_AUX(port)	_MMIO(_ICL_PORT_TX_DW_AUX(7, port))
 #define ICL_PORT_TX_DW7_GRP(port)	_MMIO(_ICL_PORT_TX_DW_GRP(7, port))
 #define ICL_PORT_TX_DW7_LN0(port)	_MMIO(_ICL_PORT_TX_DW_LN(7, 0, port))
-- 
2.17.1