On Mon, Jul 08, 2019 at 04:16:25PM -0700, Lucas De Marchi wrote:
> Add port C to workaround to cover Tiger Lake.
>
> Cc: Rodrigo Vivi
Reviewed-by: Rodrigo Vivi
> Signed-off-by: Lucas De Marchi
> ---
> drivers/gpu/drm/i915/display/intel_display_power.c | 11 ---
> drivers/gpu/drm/i915/i915_reg.h| 4 +++-
> 2 files changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c
> b/drivers/gpu/drm/i915/display/intel_display_power.c
> index 455f9aab188d..be3d4d1eece2 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> @@ -453,6 +453,7 @@ icl_combo_phy_aux_power_well_enable(struct
> drm_i915_private *dev_priv,
> int pw_idx = power_well->desc->hsw.idx;
> enum port port = ICL_AUX_PW_TO_PORT(pw_idx);
> u32 val;
> + int wa_idx_max;
>
> val = I915_READ(regs->driver);
> I915_WRITE(regs->driver, val | HSW_PWR_WELL_CTL_REQ(pw_idx));
> @@ -462,9 +463,13 @@ icl_combo_phy_aux_power_well_enable(struct
> drm_i915_private *dev_priv,
>
> hsw_wait_for_power_well_enable(dev_priv, power_well);
>
> - /* Display WA #1178: icl */
> - if (IS_ICELAKE(dev_priv) &&
> - pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= ICL_PW_CTL_IDX_AUX_B &&
> + /* Display WA #1178: icl, tgl */
> + if (IS_TIGERLAKE(dev_priv))
> + wa_idx_max = ICL_PW_CTL_IDX_AUX_C;
> + else
> + wa_idx_max = ICL_PW_CTL_IDX_AUX_B;
> +
> + if (pw_idx >= ICL_PW_CTL_IDX_AUX_A && pw_idx <= wa_idx_max &&
> !intel_bios_is_port_edp(dev_priv, port)) {
> val = I915_READ(ICL_AUX_ANAOVRD1(pw_idx));
> val |= ICL_AUX_ANAOVRD1_ENABLE | ICL_AUX_ANAOVRD1_LDO_BYPASS;
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index ccfb95e2aa03..fbcc7981c8c4 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -9246,9 +9246,11 @@ enum skl_power_gate {
> #define _ICL_AUX_REG_IDX(pw_idx) ((pw_idx) - ICL_PW_CTL_IDX_AUX_A)
> #define _ICL_AUX_ANAOVRD1_A 0x162398
> #define _ICL_AUX_ANAOVRD1_B 0x6C398
> +#define _TGL_AUX_ANAOVRD1_C 0x160398
> #define ICL_AUX_ANAOVRD1(pw_idx) _MMIO(_PICK(_ICL_AUX_REG_IDX(pw_idx), \
> _ICL_AUX_ANAOVRD1_A, \
> - _ICL_AUX_ANAOVRD1_B))
> + _ICL_AUX_ANAOVRD1_B, \
> + _TGL_AUX_ANAOVRD1_C))
> #define ICL_AUX_ANAOVRD1_LDO_BYPASS(1 << 7)
> #define ICL_AUX_ANAOVRD1_ENABLE(1 << 0)
>
> --
> 2.21.0
>
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