drm/i915: Convert pll macros to _PICK_EVEN_2RANGES

Avoid the array lookup, converting the PLL macros after ICL to
_PICK_EVEN_RANGES. This provides the following reduction in code size:

	$ size build64/drivers/gpu/drm/i915/i915.o{.old,.new}
	   text    data     bss     dec     hex filename
	4027456  185703    6984 4220143  4064ef build64/drivers/gpu/drm/i915/i915.o.old
	4026997  185703    6984 4219684  406324 build64/drivers/gpu/drm/i915/i915.o.new

At the same time it's safer, avoiding out-of-bounds array access.  This
allows to remove _MMIO_PLL3() that is now unused.
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230120193457.3295977-4-lucas.demarchi@intel.com

drivers/gpu/drm/i915/display/intel_display_reg_defs.h

@@ -34,7 +34,6 @@
 #define _MMIO_PIPE3(pipe, a, b, c)	_MMIO(_PICK(pipe, a, b, c))
 #define _MMIO_PORT3(pipe, a, b, c)	_MMIO(_PICK(pipe, a, b, c))
 #define _MMIO_PHY3(phy, a, b, c)	_MMIO(_PHY3(phy, a, b, c))
-#define _MMIO_PLL3(pll, ...)		_MMIO(_PICK(pll, __VA_ARGS__))
 
 /*
  * Device info offset array based helpers for groups of registers with unevenly

drivers/gpu/drm/i915/i915_reg.h

@@ -7232,13 +7232,15 @@ enum skl_power_gate {
 #define   PLL_LOCK		REG_BIT(30)
 #define   PLL_POWER_ENABLE	REG_BIT(27)
 #define   PLL_POWER_STATE	REG_BIT(26)
-#define ICL_DPLL_ENABLE(pll)	_MMIO_PLL3(pll, _DPLL0_ENABLE, _DPLL1_ENABLE, \
-					   _ADLS_DPLL2_ENABLE, _ADLS_DPLL3_ENABLE)
+#define ICL_DPLL_ENABLE(pll)	_MMIO(_PICK_EVEN_2RANGES(pll, 3,			\
+							_DPLL0_ENABLE, _DPLL1_ENABLE,	\
+							_ADLS_DPLL3_ENABLE, _ADLS_DPLL3_ENABLE))
 
 #define _DG2_PLL3_ENABLE	0x4601C
 
-#define DG2_PLL_ENABLE(pll) _MMIO_PLL3(pll, _DPLL0_ENABLE, _DPLL1_ENABLE, \
-				       _ADLS_DPLL2_ENABLE, _DG2_PLL3_ENABLE)
+#define DG2_PLL_ENABLE(pll)	_MMIO(_PICK_EVEN_2RANGES(pll, 3,			\
+							_DPLL0_ENABLE, _DPLL1_ENABLE,	\
+							_DG2_PLL3_ENABLE, _DG2_PLL3_ENABLE))
 
 #define TBT_PLL_ENABLE		_MMIO(0x46020)
 
@@ -7251,8 +7253,9 @@ enum skl_power_gate {
 					   _MG_PLL2_ENABLE)
 
 /* DG1 PLL */
-#define DG1_DPLL_ENABLE(pll)    _MMIO_PLL3(pll, _DPLL0_ENABLE, _DPLL1_ENABLE, \
-					   _MG_PLL1_ENABLE, _MG_PLL2_ENABLE)
+#define DG1_DPLL_ENABLE(pll)    _MMIO(_PICK_EVEN_2RANGES(pll, 2,			\
+							_DPLL0_ENABLE, _DPLL1_ENABLE,	\
+							_MG_PLL1_ENABLE, _MG_PLL2_ENABLE))
 
 /* ADL-P Type C PLL */
 #define PORTTC1_PLL_ENABLE	0x46038
@@ -7312,9 +7315,9 @@ enum skl_power_gate {
 #define _TGL_DPLL0_CFGCR0		0x164284
 #define _TGL_DPLL1_CFGCR0		0x16428C
 #define _TGL_TBTPLL_CFGCR0		0x16429C
-#define TGL_DPLL_CFGCR0(pll)		_MMIO_PLL3(pll, _TGL_DPLL0_CFGCR0, \
-						  _TGL_DPLL1_CFGCR0, \
-						  _TGL_TBTPLL_CFGCR0)
+#define TGL_DPLL_CFGCR0(pll)		_MMIO(_PICK_EVEN_2RANGES(pll, 2,		\
+					      _TGL_DPLL0_CFGCR0, _TGL_DPLL1_CFGCR0,	\
+					      _TGL_TBTPLL_CFGCR0, _TGL_TBTPLL_CFGCR0))
 #define RKL_DPLL_CFGCR0(pll)		_MMIO_PLL(pll, _TGL_DPLL0_CFGCR0, \
 						  _TGL_DPLL1_CFGCR0)
 
@@ -7327,40 +7330,36 @@ enum skl_power_gate {
 #define _TGL_DPLL0_CFGCR1		0x164288
 #define _TGL_DPLL1_CFGCR1		0x164290
 #define _TGL_TBTPLL_CFGCR1		0x1642A0
-#define TGL_DPLL_CFGCR1(pll)		_MMIO_PLL3(pll, _TGL_DPLL0_CFGCR1, \
-						   _TGL_DPLL1_CFGCR1, \
-						   _TGL_TBTPLL_CFGCR1)
+#define TGL_DPLL_CFGCR1(pll)		_MMIO(_PICK_EVEN_2RANGES(pll, 2,		\
+					      _TGL_DPLL0_CFGCR1, _TGL_DPLL1_CFGCR1,	\
+					      _TGL_TBTPLL_CFGCR1, _TGL_TBTPLL_CFGCR1))
 #define RKL_DPLL_CFGCR1(pll)		_MMIO_PLL(pll, _TGL_DPLL0_CFGCR1, \
 						  _TGL_DPLL1_CFGCR1)
 
 #define _DG1_DPLL2_CFGCR0		0x16C284
 #define _DG1_DPLL3_CFGCR0		0x16C28C
-#define DG1_DPLL_CFGCR0(pll)		_MMIO_PLL3(pll, _TGL_DPLL0_CFGCR0, \
-						   _TGL_DPLL1_CFGCR0, \
-						   _DG1_DPLL2_CFGCR0, \
-						   _DG1_DPLL3_CFGCR0)
+#define DG1_DPLL_CFGCR0(pll)		_MMIO(_PICK_EVEN_2RANGES(pll, 2,		\
+					      _TGL_DPLL0_CFGCR0, _TGL_DPLL1_CFGCR0,	\
+					      _DG1_DPLL2_CFGCR0, _DG1_DPLL3_CFGCR0))
 
 #define _DG1_DPLL2_CFGCR1               0x16C288
 #define _DG1_DPLL3_CFGCR1               0x16C290
-#define DG1_DPLL_CFGCR1(pll)            _MMIO_PLL3(pll, _TGL_DPLL0_CFGCR1, \
-						   _TGL_DPLL1_CFGCR1, \
-						   _DG1_DPLL2_CFGCR1, \
-						   _DG1_DPLL3_CFGCR1)
+#define DG1_DPLL_CFGCR1(pll)            _MMIO(_PICK_EVEN_2RANGES(pll, 2,		\
+					      _TGL_DPLL0_CFGCR1, _TGL_DPLL1_CFGCR1,	\
+					      _DG1_DPLL2_CFGCR1, _DG1_DPLL3_CFGCR1))
 
 /* For ADL-S DPLL4_CFGCR0/1 are used to control DPLL2 */
-#define _ADLS_DPLL3_CFGCR0		0x1642C0
 #define _ADLS_DPLL4_CFGCR0		0x164294
-#define ADLS_DPLL_CFGCR0(pll)		_MMIO_PLL3(pll, _TGL_DPLL0_CFGCR0, \
-						   _TGL_DPLL1_CFGCR0, \
-						   _ADLS_DPLL4_CFGCR0, \
-						   _ADLS_DPLL3_CFGCR0)
+#define _ADLS_DPLL3_CFGCR0		0x1642C0
+#define ADLS_DPLL_CFGCR0(pll)		_MMIO(_PICK_EVEN_2RANGES(pll, 2,		\
+					      _TGL_DPLL0_CFGCR0, _TGL_DPLL1_CFGCR0,	\
+					      _ADLS_DPLL4_CFGCR0, _ADLS_DPLL3_CFGCR0))
 
-#define _ADLS_DPLL3_CFGCR1		0x1642C4
 #define _ADLS_DPLL4_CFGCR1		0x164298
-#define ADLS_DPLL_CFGCR1(pll)		_MMIO_PLL3(pll, _TGL_DPLL0_CFGCR1, \
-						   _TGL_DPLL1_CFGCR1, \
-						   _ADLS_DPLL4_CFGCR1, \
-						   _ADLS_DPLL3_CFGCR1)
+#define _ADLS_DPLL3_CFGCR1		0x1642C4
+#define ADLS_DPLL_CFGCR1(pll)		_MMIO(_PICK_EVEN_2RANGES(pll, 2,		\
+					      _TGL_DPLL0_CFGCR1, _TGL_DPLL1_CFGCR1,	\
+					      _ADLS_DPLL4_CFGCR1, _ADLS_DPLL3_CFGCR1))
 
 /* BXT display engine PLL */
 #define BXT_DE_PLL_CTL			_MMIO(0x6d000)