The purpose of this mask is to simplify writing to the lxcr register and not to forget any fields.
Signed-off-by: Yannick Fertre <[email protected]> --- drivers/gpu/drm/stm/ltdc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c index cb4f08673a64..3876346a1303 100644 --- a/drivers/gpu/drm/stm/ltdc.c +++ b/drivers/gpu/drm/stm/ltdc.c @@ -187,6 +187,7 @@ #define LXCR_COLKEN BIT(1) /* Color Keying Enable */ #define LXCR_CLUTEN BIT(4) /* Color Look-Up Table ENable */ #define LXCR_HMEN BIT(8) /* Horizontal Mirroring ENable */ +#define LXCR_MASK (LXCR_LEN | LXCR_COLKEN | LXCR_CLUTEN | LXCR_HMEN) #define LXWHPCR_WHSTPOS GENMASK(11, 0) /* Window Horizontal StarT POSition */ #define LXWHPCR_WHSPPOS GENMASK(27, 16) /* Window Horizontal StoP POSition */ @@ -806,8 +807,7 @@ static void ltdc_crtc_atomic_disable(struct drm_crtc *crtc, /* Disable all layers */ for (layer_index = 0; layer_index < ldev->caps.nb_layers; layer_index++) - regmap_write_bits(ldev->regmap, LTDC_L1CR + layer_index * LAY_OFS, - LXCR_CLUTEN | LXCR_LEN, 0); + regmap_write_bits(ldev->regmap, LTDC_L1CR + layer_index * LAY_OFS, LXCR_MASK, 0); /* disable IRQ */ regmap_clear_bits(ldev->regmap, LTDC_IER, IER_FUWIE | IER_FUEIE | IER_RRIE | IER_TERRIE); @@ -1474,7 +1474,7 @@ static void ltdc_plane_atomic_update(struct drm_plane *plane, if (newstate->rotation & DRM_MODE_REFLECT_X) val |= LXCR_HMEN; - regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN | LXCR_HMEN, val); + regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_MASK, val); /* Commit shadow registers = update plane at next vblank */ if (ldev->caps.plane_reg_shadow) @@ -1512,7 +1512,7 @@ static void ltdc_plane_atomic_disable(struct drm_plane *plane, u32 lofs = plane->index * LAY_OFS; /* Disable layer */ - regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_LEN | LXCR_CLUTEN | LXCR_HMEN, 0); + regmap_write_bits(ldev->regmap, LTDC_L1CR + lofs, LXCR_MASK, 0); /* Reset the layer transparency to hide any related background color */ regmap_write_bits(ldev->regmap, LTDC_L1CACR + lofs, LXCACR_CONSTA, 0x00); -- 2.34.1
