On Wed, Feb 23, 2022 at 12:35:17PM +0200, Jani Nikula wrote:
> Use REG_FIELD_{PREP,GET} for completeness, and to avoid bitwise
> operations with different sizes.
>
> v2: Also use REG_FIELD_GET in skl_wm_level_from_reg_val() (Ville)
>
> Cc: Ville Syrjälä <[email protected]>
> Signed-off-by: Jani Nikula <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 5af16ca4dabd..f7fabcabf805 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -5930,7 +5930,7 @@ static void skl_write_wm_level(struct drm_i915_private
> *dev_priv,
> val |= PLANE_WM_EN;
> if (level->ignore_lines)
> val |= PLANE_WM_IGNORE_LINES;
> - val |= level->blocks;
> + val |= REG_FIELD_PREP(PLANE_WM_BLOCKS_MASK, level->blocks);
> val |= REG_FIELD_PREP(PLANE_WM_LINES_MASK, level->lines);
>
> intel_de_write_fw(dev_priv, reg, val);
> @@ -6578,7 +6578,7 @@ static void skl_wm_level_from_reg_val(u32 val, struct
> skl_wm_level *level)
> {
> level->enable = val & PLANE_WM_EN;
> level->ignore_lines = val & PLANE_WM_IGNORE_LINES;
> - level->blocks = val & PLANE_WM_BLOCKS_MASK;
> + level->blocks = REG_FIELD_GET(PLANE_WM_BLOCKS_MASK, val);
> level->lines = REG_FIELD_GET(PLANE_WM_LINES_MASK, val);
> }
>
> --
> 2.30.2
--
Ville Syrjälä
Intel
