On Fri, Jul 23, 2021 at 05:11:03PM -0700, Lucas De Marchi wrote:
> Remove support for CNL as it's highly untested, probably broken, and
> there is no real platform that requires this code. This is part of CNL
> removal from i915.
>
> Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 2 +-
> drivers/gpu/drm/i915/intel_pm.c | 41 +--------------------------------
> 2 files changed, 2 insertions(+), 41 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index fdc8fd424d36..f032a4c8b26d 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -8239,7 +8239,7 @@ enum {
>
> #define GEN8_CHICKEN_DCPR_1 _MMIO(0x46430)
> #define SKL_SELECT_ALTERNATE_DC_EXIT (1 << 30)
> -#define CNL_DELAY_PMRSP (1 << 22)
> +#define ICL_DELAY_PMRSP (1 << 22)
> #define MASK_WAKEMEM (1 << 13)
> #define CNL_DDI_CLOCK_REG_ACCESS_ON (1 << 7)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index aa64b2ef2efb..65bc3709f54c 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -7465,7 +7465,7 @@ static void icl_init_clock_gating(struct drm_i915_private *dev_priv)
>
> /*Wa_14010594013:icl, ehl */
> intel_uncore_rmw(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1,
> - 0, CNL_DELAY_PMRSP);
> + 0, ICL_DELAY_PMRSP);
> }
>
> static void gen12lp_init_clock_gating(struct drm_i915_private *dev_priv)
> @@ -7515,43 +7515,6 @@ static void cnp_init_clock_gating(struct drm_i915_private *dev_priv)
> CNP_PWM_CGE_GATING_DISABLE);
> }
>
> -static void cnl_init_clock_gating(struct drm_i915_private *dev_priv)
> -{
> - u32 val;
> - cnp_init_clock_gating(dev_priv);
> -
> - /* This is not an Wa. Enable for better image quality */
> - intel_uncore_write(&dev_priv->uncore, _3D_CHICKEN3,
> - _MASKED_BIT_ENABLE(_3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE));
> -
> - /* WaEnableChickenDCPR:cnl */
> - intel_uncore_write(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1,
> - intel_uncore_read(&dev_priv->uncore, GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM);
> -
> - /*
> - * WaFbcWakeMemOn:cnl
> - * Display WA #0859: cnl
> - */
> - intel_uncore_write(&dev_priv->uncore, DISP_ARB_CTL, intel_uncore_read(&dev_priv->uncore, DISP_ARB_CTL) |
> - DISP_FBC_MEMORY_WAKE);
> -
> - val = intel_uncore_read(&dev_priv->uncore, SLICE_UNIT_LEVEL_CLKGATE);
> - /* ReadHitWriteOnlyDisable:cnl */
> - val |= RCCUNIT_CLKGATE_DIS;
> - intel_uncore_write(&dev_priv->uncore, SLICE_UNIT_LEVEL_CLKGATE, val);
> -
> - /* Wa_2201832410:cnl */
> - val = intel_uncore_read(&dev_priv->uncore, SUBSLICE_UNIT_LEVEL_CLKGATE);
> - val |= GWUNIT_CLKGATE_DIS;
> - intel_uncore_write(&dev_priv->uncore, SUBSLICE_UNIT_LEVEL_CLKGATE, val);
> -
> - /* WaDisableVFclkgate:cnl */
> - /* WaVFUnitClockGatingDisable:cnl */
> - val = intel_uncore_read(&dev_priv->uncore, UNSLICE_UNIT_LEVEL_CLKGATE);
> - val |= VFUNIT_CLKGATE_DIS;
> - intel_uncore_write(&dev_priv->uncore, UNSLICE_UNIT_LEVEL_CLKGATE, val);
> -}
> -
> static void cfl_init_clock_gating(struct drm_i915_private *dev_priv)
> {
> cnp_init_clock_gating(dev_priv);
> @@ -7980,8 +7943,6 @@ void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv)
> dev_priv->display.init_clock_gating = gen12lp_init_clock_gating;
> else if (GRAPHICS_VER(dev_priv) == 11)
> dev_priv->display.init_clock_gating = icl_init_clock_gating;
> - else if (IS_CANNONLAKE(dev_priv))
> - dev_priv->display.init_clock_gating = cnl_init_clock_gating;
> else if (IS_COFFEELAKE(dev_priv) || IS_COMETLAKE(dev_priv))
> dev_priv->display.init_clock_gating = cfl_init_clock_gating;
> else if (IS_SKYLAKE(dev_priv))
> --
> 2.31.1
>
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