On Mon, Feb 25, 2019 at 01:54:16PM -0800, Lucas De Marchi wrote:
> On Mon, Feb 25, 2019 at 09:28:06PM +0200, Ville Syrjälä wrote:
> >On Fri, Feb 22, 2019 at 04:34:48PM -0800, Lucas De Marchi wrote:
> >> No change in behavior. Just removing the unused bits since it makes it
> >> easier to compare them on new platforms and one of them was wrong
> >> (PP_SEQUENCE_STATE_ON_S1_0 vs the supposedly correct name
> >> PP_SEQUENCE_STATE_ON_S1_1)
> >>
> >> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> >> Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
> >> ---
> >> drivers/gpu/drm/i915/i915_reg.h | 12 +++---------
> >> 1 file changed, 3 insertions(+), 9 deletions(-)
> >>
> >> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> >> index 730bb1917fd1..e855dae978db 100644
> >> --- a/drivers/gpu/drm/i915/i915_reg.h
> >> +++ b/drivers/gpu/drm/i915/i915_reg.h
> >> @@ -4717,15 +4717,9 @@ enum {
> >> #define PP_SEQUENCE_SHIFT 28
> >> #define PP_CYCLE_DELAY_ACTIVE (1 << 27)
> >> #define PP_SEQUENCE_STATE_MASK 0x0000000f
> >> -#define PP_SEQUENCE_STATE_OFF_IDLE (0x0 << 0)
> >> -#define PP_SEQUENCE_STATE_OFF_S0_1 (0x1 << 0)
> >> -#define PP_SEQUENCE_STATE_OFF_S0_2 (0x2 << 0)
> >> -#define PP_SEQUENCE_STATE_OFF_S0_3 (0x3 << 0)
> >> -#define PP_SEQUENCE_STATE_ON_IDLE (0x8 << 0)
> >> -#define PP_SEQUENCE_STATE_ON_S1_0 (0x9 << 0)
> >> -#define PP_SEQUENCE_STATE_ON_S1_2 (0xa << 0)
> >> -#define PP_SEQUENCE_STATE_ON_S1_3 (0xb << 0)
> >> -#define PP_SEQUENCE_STATE_RESET (0xf << 0)
> >> +#define PP_SEQUENCE_STATE_OFF_IDLE 0x0
> >> +#define PP_SEQUENCE_STATE_ON_IDLE 0x8
> >> +#define PP_SEQUENCE_STATE_RESET 0xf
> >
> >But how am I supposed to remember what the register values mean?
>
> We only care for a small subset of those and the name should already be
> enough, no? We don't need to bring in all the possible bits from spec,
> even worse when they are misnamed. If we keep defining what we don't use
> it actually makes our life harder to crosscheck with the spec if
> everything is correct. Makes sense?
I have in the past looked at logs where I had to decode the state
bits to figure out where it was going.
>
> Lucas De Marchi
>
> >
> >>
> >> #define _PP_CONTROL 0x61204
> >> #define PP_CONTROL(pps_idx) _MMIO_PPS(pps_idx, _PP_CONTROL)
> >> --
> >> 2.20.0
> >>
> >> _______________________________________________
> >> Intel-gfx mailing list
> >> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> >> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
> >
> >--
> >Ville Syrjälä
> >Intel
--
Ville Syrjälä
Intel
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