On Tue, 19 Oct 2021, Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx> wrote:
> v2: Fix the typo, move out the hardcoding from
> macro(Jani, Ville)
>
> Fixes: f87c46c43175 ("drm/i915/dsi/xelpd: Add WA to program LP to HS wakeup guardband")
> Signed-off-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/icl_dsi.c | 3 ++-
> drivers/gpu/drm/i915/i915_reg.h | 4 +++-
> 2 files changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c b/drivers/gpu/drm/i915/display/icl_dsi.c
> index 168c84a74d30..63dd75c6448a 100644
> --- a/drivers/gpu/drm/i915/display/icl_dsi.c
> +++ b/drivers/gpu/drm/i915/display/icl_dsi.c
> @@ -1271,7 +1271,8 @@ static void adlp_set_lp_hs_wakeup_gb(struct intel_encoder *encoder)
> if (DISPLAY_VER(i915) == 13) {
> for_each_dsi_port(port, intel_dsi->ports)
> intel_de_rmw(i915, TGL_DSI_CHKN_REG(port),
> - TGL_DSI_CHKN_LSHS_GB, 0x4);
> + TGL_DSI_CHKN_LSHS_GB_MASK,
> + TGL_DSI_CHKN_LSHS_GB(4));
> }
> }
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index d9f7a729333f..749b043a3ee3 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -11715,7 +11715,9 @@ enum skl_power_gate {
> #define TGL_DSI_CHKN_REG(port) _MMIO_PORT(port, \
> _TGL_DSI_CHKN_REG_0, \
> _TGL_DSI_CHKN_REG_1)
> -#define TGL_DSI_CHKN_LSHS_GB REG_GENMASK(15, 12)
> +#define TGL_DSI_CHKN_LSHS_GB_MASK REG_GENMASK(15, 12)
> +#define TGL_DSI_CHKN_LSHS_GB(byte_clocks) REG_FIELD_PREP(TGL_DSI_CHKN_LSHS_GB_MASK, \
> + (byte_clocks))
>
> /* Display Stream Splitter Control */
> #define DSS_CTL1 _MMIO(0x67400)
--
Jani Nikula, Intel Open Source Graphics Center
