Message ID | 20180629102039.2435-1-jani.nikula@intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On Fri, Jun 29, 2018 at 01:20:39PM +0300, Jani Nikula wrote: > Try to describe what the pick variants do, and which to prefer. No > functional changes. > > Signed-off-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> > > --- > > Let the naming bikeshed fest begin! > --- > drivers/gpu/drm/i915/i915_reg.h | 28 ++++++++++++++++++++++------ > 1 file changed, 22 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h > index c30cfcd90754..7dc774682922 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -139,19 +139,35 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) > return !i915_mmio_reg_equal(reg, INVALID_MMIO_REG); > } > > +/* > + * Given the first two numbers __a and __b of arbitrarily many evenly spaced > + * numbers, pick the 0-based __index'th value. > + * > + * Always prefer this over _PICK() if the numbers are evenly spaced. > + */ > +#define _PICK_EVEN(__index, __a, __b) ((__a) + (__index) * ((__b) - (__a))) > + > +/* > + * Given the arbitrary numbers in varargs, pick the 0-based __index'th number. > + * > + * Always prefer _PICK_EVEN() over this if the numbers are evenly spaced. > + */ > #define _PICK(__index, ...) (((const u32 []){ __VA_ARGS__ })[__index]) > > -#define _PIPE(pipe, a, b) ((a) + (pipe) * ((b) - (a))) > +/* > + * Named helper wrappers around _PICK_EVEN() and _PICK(). > + */ > +#define _PIPE(pipe, a, b) _PICK_EVEN(pipe, a, b) > #define _MMIO_PIPE(pipe, a, b) _MMIO(_PIPE(pipe, a, b)) > -#define _PLANE(plane, a, b) _PIPE(plane, a, b) > +#define _PLANE(plane, a, b) _PICK_EVEN(plane, a, b) > #define _MMIO_PLANE(plane, a, b) _MMIO_PIPE(plane, a, b) > -#define _TRANS(tran, a, b) ((a) + (tran) * ((b) - (a))) > +#define _TRANS(tran, a, b) _PICK_EVEN(tran, a, b) > #define _MMIO_TRANS(tran, a, b) _MMIO(_TRANS(tran, a, b)) > -#define _PORT(port, a, b) ((a) + (port) * ((b) - (a))) > +#define _PORT(port, a, b) _PICK_EVEN(port, a, b) > #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) > #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 _PLL(pll, a, b) ((a) + (pll) * ((b) - (a))) > +#define _PLL(pll, a, b) _PICK_EVEN(pll, a, b) > #define _MMIO_PLL(pll, a, b) _MMIO(_PLL(pll, a, b)) > #define _PHY3(phy, ...) _PICK(phy, __VA_ARGS__) > #define _MMIO_PHY3(phy, a, b, c) _MMIO(_PHY3(phy, a, b, c)) > @@ -6874,7 +6890,7 @@ enum { > #define _PS_ECC_STAT_2B 0x68AD0 > #define _PS_ECC_STAT_1C 0x691D0 > > -#define _ID(id, a, b) ((a) + (id) * ((b) - (a))) > +#define _ID(id, a, b) _PICK_EVEN(id, a, b) > #define SKL_PS_CTRL(pipe, id) _MMIO_PIPE(pipe, \ > _ID(id, _PS_1A_CTRL, _PS_2A_CTRL), \ > _ID(id, _PS_1B_CTRL, _PS_2B_CTRL)) > -- > 2.11.0 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/intel-gfx
On Fri, 29 Jun 2018, Rodrigo Vivi <rodrigo.vivi@intel.com> wrote: > On Fri, Jun 29, 2018 at 01:20:39PM +0300, Jani Nikula wrote: >> Try to describe what the pick variants do, and which to prefer. No >> functional changes. >> >> Signed-off-by: Jani Nikula <jani.nikula@intel.com> > > Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Thanks, pushed. BR, Jani. > >> >> --- >> >> Let the naming bikeshed fest begin! >> --- >> drivers/gpu/drm/i915/i915_reg.h | 28 ++++++++++++++++++++++------ >> 1 file changed, 22 insertions(+), 6 deletions(-) >> >> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h >> index c30cfcd90754..7dc774682922 100644 >> --- a/drivers/gpu/drm/i915/i915_reg.h >> +++ b/drivers/gpu/drm/i915/i915_reg.h >> @@ -139,19 +139,35 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) >> return !i915_mmio_reg_equal(reg, INVALID_MMIO_REG); >> } >> >> +/* >> + * Given the first two numbers __a and __b of arbitrarily many evenly spaced >> + * numbers, pick the 0-based __index'th value. >> + * >> + * Always prefer this over _PICK() if the numbers are evenly spaced. >> + */ >> +#define _PICK_EVEN(__index, __a, __b) ((__a) + (__index) * ((__b) - (__a))) >> + >> +/* >> + * Given the arbitrary numbers in varargs, pick the 0-based __index'th number. >> + * >> + * Always prefer _PICK_EVEN() over this if the numbers are evenly spaced. >> + */ >> #define _PICK(__index, ...) (((const u32 []){ __VA_ARGS__ })[__index]) >> >> -#define _PIPE(pipe, a, b) ((a) + (pipe) * ((b) - (a))) >> +/* >> + * Named helper wrappers around _PICK_EVEN() and _PICK(). >> + */ >> +#define _PIPE(pipe, a, b) _PICK_EVEN(pipe, a, b) >> #define _MMIO_PIPE(pipe, a, b) _MMIO(_PIPE(pipe, a, b)) >> -#define _PLANE(plane, a, b) _PIPE(plane, a, b) >> +#define _PLANE(plane, a, b) _PICK_EVEN(plane, a, b) >> #define _MMIO_PLANE(plane, a, b) _MMIO_PIPE(plane, a, b) >> -#define _TRANS(tran, a, b) ((a) + (tran) * ((b) - (a))) >> +#define _TRANS(tran, a, b) _PICK_EVEN(tran, a, b) >> #define _MMIO_TRANS(tran, a, b) _MMIO(_TRANS(tran, a, b)) >> -#define _PORT(port, a, b) ((a) + (port) * ((b) - (a))) >> +#define _PORT(port, a, b) _PICK_EVEN(port, a, b) >> #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) >> #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 _PLL(pll, a, b) ((a) + (pll) * ((b) - (a))) >> +#define _PLL(pll, a, b) _PICK_EVEN(pll, a, b) >> #define _MMIO_PLL(pll, a, b) _MMIO(_PLL(pll, a, b)) >> #define _PHY3(phy, ...) _PICK(phy, __VA_ARGS__) >> #define _MMIO_PHY3(phy, a, b, c) _MMIO(_PHY3(phy, a, b, c)) >> @@ -6874,7 +6890,7 @@ enum { >> #define _PS_ECC_STAT_2B 0x68AD0 >> #define _PS_ECC_STAT_1C 0x691D0 >> >> -#define _ID(id, a, b) ((a) + (id) * ((b) - (a))) >> +#define _ID(id, a, b) _PICK_EVEN(id, a, b) >> #define SKL_PS_CTRL(pipe, id) _MMIO_PIPE(pipe, \ >> _ID(id, _PS_1A_CTRL, _PS_2A_CTRL), \ >> _ID(id, _PS_1B_CTRL, _PS_2B_CTRL)) >> -- >> 2.11.0 >> >> _______________________________________________ >> Intel-gfx mailing list >> Intel-gfx@lists.freedesktop.org >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index c30cfcd90754..7dc774682922 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -139,19 +139,35 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) return !i915_mmio_reg_equal(reg, INVALID_MMIO_REG); } +/* + * Given the first two numbers __a and __b of arbitrarily many evenly spaced + * numbers, pick the 0-based __index'th value. + * + * Always prefer this over _PICK() if the numbers are evenly spaced. + */ +#define _PICK_EVEN(__index, __a, __b) ((__a) + (__index) * ((__b) - (__a))) + +/* + * Given the arbitrary numbers in varargs, pick the 0-based __index'th number. + * + * Always prefer _PICK_EVEN() over this if the numbers are evenly spaced. + */ #define _PICK(__index, ...) (((const u32 []){ __VA_ARGS__ })[__index]) -#define _PIPE(pipe, a, b) ((a) + (pipe) * ((b) - (a))) +/* + * Named helper wrappers around _PICK_EVEN() and _PICK(). + */ +#define _PIPE(pipe, a, b) _PICK_EVEN(pipe, a, b) #define _MMIO_PIPE(pipe, a, b) _MMIO(_PIPE(pipe, a, b)) -#define _PLANE(plane, a, b) _PIPE(plane, a, b) +#define _PLANE(plane, a, b) _PICK_EVEN(plane, a, b) #define _MMIO_PLANE(plane, a, b) _MMIO_PIPE(plane, a, b) -#define _TRANS(tran, a, b) ((a) + (tran) * ((b) - (a))) +#define _TRANS(tran, a, b) _PICK_EVEN(tran, a, b) #define _MMIO_TRANS(tran, a, b) _MMIO(_TRANS(tran, a, b)) -#define _PORT(port, a, b) ((a) + (port) * ((b) - (a))) +#define _PORT(port, a, b) _PICK_EVEN(port, a, b) #define _MMIO_PORT(port, a, b) _MMIO(_PORT(port, a, b)) #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 _PLL(pll, a, b) ((a) + (pll) * ((b) - (a))) +#define _PLL(pll, a, b) _PICK_EVEN(pll, a, b) #define _MMIO_PLL(pll, a, b) _MMIO(_PLL(pll, a, b)) #define _PHY3(phy, ...) _PICK(phy, __VA_ARGS__) #define _MMIO_PHY3(phy, a, b, c) _MMIO(_PHY3(phy, a, b, c)) @@ -6874,7 +6890,7 @@ enum { #define _PS_ECC_STAT_2B 0x68AD0 #define _PS_ECC_STAT_1C 0x691D0 -#define _ID(id, a, b) ((a) + (id) * ((b) - (a))) +#define _ID(id, a, b) _PICK_EVEN(id, a, b) #define SKL_PS_CTRL(pipe, id) _MMIO_PIPE(pipe, \ _ID(id, _PS_1A_CTRL, _PS_2A_CTRL), \ _ID(id, _PS_1B_CTRL, _PS_2B_CTRL))
Try to describe what the pick variants do, and which to prefer. No functional changes. Signed-off-by: Jani Nikula <jani.nikula@intel.com> --- Let the naming bikeshed fest begin! --- drivers/gpu/drm/i915/i915_reg.h | 28 ++++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-)