> Subject: [PATCH v3 03/16] drm/i915/display: convert W/As in
> intel_display_power.c to new framework
> 
> Convert the low-hanging fruits of workaround checks to the workaround
> framework.  Instead of having display structure checks for the workarounds all
> over, concentrate the checks in intel_display_wa.c.
> 
> Acked-by: Jani Nikula <[email protected]>
> Signed-off-by: Luca Coelho <[email protected]>

LGTM,
Reviewed-by: Suraj Kandpal <[email protected]>

> ---
>  .../drm/i915/display/intel_display_power.c    | 22 +++++++++----------
>  .../gpu/drm/i915/display/intel_display_wa.c   | 18 +++++++++++++++
>  .../gpu/drm/i915/display/intel_display_wa.h   |  7 ++++++
>  3 files changed, 36 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c
> b/drivers/gpu/drm/i915/display/intel_display_power.c
> index 755935dcfe23..7312dba4f032 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> @@ -21,6 +21,7 @@
>  #include "intel_display_rpm.h"
>  #include "intel_display_types.h"
>  #include "intel_display_utils.h"
> +#include "intel_display_wa.h"
>  #include "intel_dmc.h"
>  #include "intel_dram.h"
>  #include "intel_mchbar_regs.h"
> @@ -1621,8 +1622,7 @@ static void tgl_bw_buddy_init(struct intel_display
> *display)
>       if (display->platform.dgfx && !display->platform.dg1)
>               return;
> 
> -     if (display->platform.alderlake_s ||
> -         (display->platform.rocketlake && IS_DISPLAY_STEP(display, STEP_A0,
> STEP_B0)))
> +     if (intel_display_wa(display, INTEL_DISPLAY_WA_1409767108))
>               /* Wa_1409767108 */
>               table = wa_1409767108_buddy_page_masks;
>       else
> @@ -1645,7 +1645,7 @@ static void tgl_bw_buddy_init(struct intel_display
> *display)
>                                      table[config].page_mask);
> 
>                       /* Wa_22010178259:tgl,dg1,rkl,adl-s */
> -                     if (DISPLAY_VER(display) == 12)
> +                     if (intel_display_wa(display,
> INTEL_DISPLAY_WA_22010178259))
>                               intel_de_rmw(display, BW_BUDDY_CTL(i),
> 
> BW_BUDDY_TLB_REQ_TIMER_MASK,
> 
> BW_BUDDY_TLB_REQ_TIMER(0x8)); @@ -1662,8 +1662,7 @@ static void
> icl_display_core_init(struct intel_display *display,
>       gen9_set_dc_state(display, DC_STATE_DISABLE);
> 
>       /* Wa_14011294188:ehl,jsl,tgl,rkl,adl-s */
> -     if (INTEL_PCH_TYPE(display) >= PCH_TGP &&
> -         INTEL_PCH_TYPE(display) < PCH_DG1)
> +     if (intel_display_wa(display, INTEL_DISPLAY_WA_14011294188))
>               intel_de_rmw(display, SOUTH_DSPCLK_GATE_D, 0,
>                            PCH_DPMGUNIT_CLOCK_GATE_DISABLE);
> 
> @@ -1717,17 +1716,17 @@ static void icl_display_core_init(struct intel_display
> *display,
>               intel_dmc_load_program(display);
> 
>       /* Wa_14011508470:tgl,dg1,rkl,adl-s,adl-p,dg2 */
> -     if (IS_DISPLAY_VERx100(display, 1200, 1300))
> +     if (intel_display_wa(display, INTEL_DISPLAY_WA_14011508470))
>               intel_de_rmw(display, GEN11_CHICKEN_DCPR_2, 0,
>                            DCPR_CLEAR_MEMSTAT_DIS |
> DCPR_SEND_RESP_IMM |
>                            DCPR_MASK_LPMODE |
> DCPR_MASK_MAXLATENCY_MEMUP_CLR);
> 
>       /* Wa_14011503030:xelpd */
> -     if (DISPLAY_VER(display) == 13)
> +     if (intel_display_wa(display, INTEL_DISPLAY_WA_14011503030))
>               intel_de_write(display, XELPD_DISPLAY_ERR_FATAL_MASK, ~0);
> 
>       /* Wa_15013987218 */
> -     if (DISPLAY_VER(display) == 20) {
> +     if (intel_display_wa(display, INTEL_DISPLAY_WA_15013987218)) {
>               intel_de_rmw(display, SOUTH_DSPCLK_GATE_D,
>                            0, PCH_GMBUSUNIT_CLOCK_GATE_DISABLE);
>               intel_de_rmw(display, SOUTH_DSPCLK_GATE_D, @@ -2266,8
> +2265,9 @@ void intel_display_power_suspend_late(struct intel_display
> *display, bool s2idle
>       }
> 
>       /* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,adp */
> -     if (INTEL_PCH_TYPE(display) >= PCH_CNP && INTEL_PCH_TYPE(display)
> < PCH_DG1)
> -             intel_de_rmw(display, SOUTH_CHICKEN1,
> SBCLK_RUN_REFCLK_DIS, SBCLK_RUN_REFCLK_DIS);
> +     if (intel_display_wa(display, INTEL_DISPLAY_WA_14010685332))
> +             intel_de_rmw(display, SOUTH_CHICKEN1,
> +                          SBCLK_RUN_REFCLK_DIS,
> SBCLK_RUN_REFCLK_DIS);
>  }
> 
>  void intel_display_power_resume_early(struct intel_display *display) @@ -
> 2281,7 +2281,7 @@ void intel_display_power_resume_early(struct
> intel_display *display)
>       }
> 
>       /* Tweaked Wa_14010685332:cnp,icp,jsp,mcc,tgp,adp */
> -     if (INTEL_PCH_TYPE(display) >= PCH_CNP && INTEL_PCH_TYPE(display)
> < PCH_DG1)
> +     if (intel_display_wa(display, INTEL_DISPLAY_WA_14010685332))
>               intel_de_rmw(display, SOUTH_CHICKEN1,
> SBCLK_RUN_REFCLK_DIS, 0);
> 
>       intel_power_domains_resume(display);
> diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.c
> b/drivers/gpu/drm/i915/display/intel_display_wa.c
> index b383bfad3af6..011749b680e8 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_wa.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_wa.c
> @@ -9,6 +9,7 @@
>  #include "intel_display_core.h"
>  #include "intel_display_regs.h"
>  #include "intel_display_wa.h"
> +#include "intel_step.h"
> 
>  static void gen11_display_wa_apply(struct intel_display *display)  { @@ 
> -69,23
> +70,40 @@ static bool intel_display_needs_wa_16025573575(struct
> intel_display *display)  bool __intel_display_wa(struct intel_display 
> *display,
> enum intel_display_wa wa, const char *name)  {
>       switch (wa) {
> +     case INTEL_DISPLAY_WA_1409767108:
> +             return (display->platform.alderlake_s ||
> +                     (display->platform.rocketlake &&
> +                      IS_DISPLAY_STEP(display, STEP_A0, STEP_B0)));
>       case INTEL_DISPLAY_WA_13012396614:
>               return DISPLAY_VERx100(display) == 3000 ||
>                       DISPLAY_VERx100(display) == 3500;
> +     case INTEL_DISPLAY_WA_14010685332:
> +             return INTEL_PCH_TYPE(display) >= PCH_CNP &&
> +                     INTEL_PCH_TYPE(display) < PCH_DG1;
> +     case INTEL_DISPLAY_WA_14011294188:
> +             return INTEL_PCH_TYPE(display) >= PCH_TGP &&
> +                     INTEL_PCH_TYPE(display) < PCH_DG1;
> +     case INTEL_DISPLAY_WA_14011503030:
>       case INTEL_DISPLAY_WA_14011503117:
>               return DISPLAY_VER(display) == 13;
> +     case INTEL_DISPLAY_WA_14011508470:
> +             return (IS_DISPLAY_VERx100(display, 1200, 1300));
>       case INTEL_DISPLAY_WA_14020863754:
>               return DISPLAY_VERx100(display) == 3000 ||
>                       DISPLAY_VERx100(display) == 2000 ||
>                       DISPLAY_VERx100(display) == 1401;
>       case INTEL_DISPLAY_WA_14025769978:
>               return DISPLAY_VER(display) == 35;
> +     case INTEL_DISPLAY_WA_15013987218:
> +             return DISPLAY_VER(display) == 20;
>       case INTEL_DISPLAY_WA_15018326506:
>               return display->platform.battlemage;
>       case INTEL_DISPLAY_WA_16023588340:
>               return intel_display_needs_wa_16023588340(display);
>       case INTEL_DISPLAY_WA_16025573575:
>               return intel_display_needs_wa_16025573575(display);
> +     case INTEL_DISPLAY_WA_22010178259:
> +             return DISPLAY_VER(display) == 12;
>       case INTEL_DISPLAY_WA_22014263786:
>               return IS_DISPLAY_VERx100(display, 1100, 1400);
>       case INTEL_DISPLAY_WA_22021048059:
> diff --git a/drivers/gpu/drm/i915/display/intel_display_wa.h
> b/drivers/gpu/drm/i915/display/intel_display_wa.h
> index b1bcc18dd2c8..380cb64cf774 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_wa.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_wa.h
> @@ -27,13 +27,20 @@ bool intel_display_needs_wa_16023588340(struct
> intel_display *display);
>   * number.
>   */
>  enum intel_display_wa {
> +     INTEL_DISPLAY_WA_1409767108,
>       INTEL_DISPLAY_WA_13012396614,
> +     INTEL_DISPLAY_WA_14010685332,
> +     INTEL_DISPLAY_WA_14011294188,
> +     INTEL_DISPLAY_WA_14011503030,
>       INTEL_DISPLAY_WA_14011503117,
> +     INTEL_DISPLAY_WA_14011508470,
>       INTEL_DISPLAY_WA_14020863754,
>       INTEL_DISPLAY_WA_14025769978,
> +     INTEL_DISPLAY_WA_15013987218,
>       INTEL_DISPLAY_WA_15018326506,
>       INTEL_DISPLAY_WA_16023588340,
>       INTEL_DISPLAY_WA_16025573575,
> +     INTEL_DISPLAY_WA_22010178259,
>       INTEL_DISPLAY_WA_22014263786,
>       INTEL_DISPLAY_WA_22021048059,
>  };
> --
> 2.51.0

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