drm/i915: Add separate defines for cursor WM/DDB register bits

Make a more thorough split between universal planes vs. cursors
by defining the contents of the cursor WM/DDB registers separately.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240516135622.3498-8-ville.syrjala@linux.intel.comReviewed-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/i915/display/intel_cursor.c

@@ -24,7 +24,6 @@
 #include "intel_psr.h"
 #include "intel_psr_regs.h"
 #include "intel_vblank.h"
-#include "skl_universal_plane.h"
 #include "skl_watermark.h"
 
 #include "gem/i915_gem_object.h"
@@ -559,6 +558,29 @@ static void i9xx_cursor_update_sel_fetch_arm(struct intel_plane *plane,
 	}
 }
 
+static u32 skl_cursor_ddb_reg_val(const struct skl_ddb_entry *entry)
+{
+	if (!entry->end)
+		return 0;
+
+	return CUR_BUF_END(entry->end - 1) |
+		CUR_BUF_START(entry->start);
+}
+
+static u32 skl_cursor_wm_reg_val(const struct skl_wm_level *level)
+{
+	u32 val = 0;
+
+	if (level->enable)
+		val |= CUR_WM_EN;
+	if (level->ignore_lines)
+		val |= CUR_WM_IGNORE_LINES;
+	val |= REG_FIELD_PREP(CUR_WM_BLOCKS_MASK, level->blocks);
+	val |= REG_FIELD_PREP(CUR_WM_LINES_MASK, level->lines);
+
+	return val;
+}
+
 static void skl_write_cursor_wm(struct intel_plane *plane,
 				const struct intel_crtc_state *crtc_state)
 {
@@ -572,22 +594,22 @@ static void skl_write_cursor_wm(struct intel_plane *plane,
 
 	for (level = 0; level < i915->display.wm.num_levels; level++)
 		intel_de_write_fw(i915, CUR_WM(pipe, level),
-				  skl_plane_wm_reg_val(skl_plane_wm_level(pipe_wm, plane_id, level)));
+				  skl_cursor_wm_reg_val(skl_plane_wm_level(pipe_wm, plane_id, level)));
 
 	intel_de_write_fw(i915, CUR_WM_TRANS(pipe),
-			  skl_plane_wm_reg_val(skl_plane_trans_wm(pipe_wm, plane_id)));
+			  skl_cursor_wm_reg_val(skl_plane_trans_wm(pipe_wm, plane_id)));
 
 	if (HAS_HW_SAGV_WM(i915)) {
 		const struct skl_plane_wm *wm = &pipe_wm->planes[plane_id];
 
 		intel_de_write_fw(i915, CUR_WM_SAGV(pipe),
-				  skl_plane_wm_reg_val(&wm->sagv.wm0));
+				  skl_cursor_wm_reg_val(&wm->sagv.wm0));
 		intel_de_write_fw(i915, CUR_WM_SAGV_TRANS(pipe),
-				  skl_plane_wm_reg_val(&wm->sagv.trans_wm));
+				  skl_cursor_wm_reg_val(&wm->sagv.trans_wm));
 	}
 
 	intel_de_write_fw(i915, CUR_BUF_CFG(pipe),
-			  skl_plane_ddb_reg_val(ddb));
+			  skl_cursor_ddb_reg_val(ddb));
 }
 
 /* TODO: split into noarm+arm pair */

drivers/gpu/drm/i915/display/intel_cursor_regs.h

@@ -78,6 +78,10 @@
 #define _CUR_WM_A_0		0x70140
 #define _CUR_WM_B_0		0x71140
 #define CUR_WM(pipe, level)	_MMIO(_PIPE((pipe), _CUR_WM_A_0, _CUR_WM_B_0) + (level) * 4)
+#define   CUR_WM_EN				REG_BIT(31)
+#define   CUR_WM_IGNORE_LINES			REG_BIT(30)
+#define   CUR_WM_LINES_MASK			REG_GENMASK(26, 14)
+#define   CUR_WM_BLOCKS_MASK			REG_GENMASK(11, 0)
 
 #define _CUR_WM_SAGV_A		0x70158
 #define _CUR_WM_SAGV_B		0x71158
@@ -94,6 +98,11 @@
 #define _CUR_BUF_CFG_A		0x7017c
 #define _CUR_BUF_CFG_B		0x7117c
 #define CUR_BUF_CFG(pipe)	_MMIO_PIPE((pipe), _CUR_BUF_CFG_A, _CUR_BUF_CFG_B)
+/* skl+: 10 bits, icl+ 11 bits, adlp+ 12 bits */
+#define   CUR_BUF_END_MASK		REG_GENMASK(27, 16)
+#define   CUR_BUF_END(end)		REG_FIELD_PREP(CUR_BUF_END_MASK, (end))
+#define   CUR_BUF_START_MASK		REG_GENMASK(11, 0)
+#define   CUR_BUF_START(start)		REG_FIELD_PREP(CUR_BUF_START_MASK, (start))
 
 /* tgl+ */
 #define _SEL_FETCH_CUR_CTL_A	0x70880

drivers/gpu/drm/i915/display/skl_universal_plane.c

@@ -622,7 +622,7 @@ static u32 skl_plane_stride(const struct intel_plane_state *plane_state,
 	return stride / skl_plane_stride_mult(fb, color_plane, rotation);
 }
 
-u32 skl_plane_ddb_reg_val(const struct skl_ddb_entry *entry)
+static u32 skl_plane_ddb_reg_val(const struct skl_ddb_entry *entry)
 {
 	if (!entry->end)
 		return 0;
@@ -631,7 +631,7 @@ u32 skl_plane_ddb_reg_val(const struct skl_ddb_entry *entry)
 		PLANE_BUF_START(entry->start);
 }
 
-u32 skl_plane_wm_reg_val(const struct skl_wm_level *level)
+static u32 skl_plane_wm_reg_val(const struct skl_wm_level *level)
 {
 	u32 val = 0;
 

drivers/gpu/drm/i915/display/skl_universal_plane.h

@@ -37,7 +37,4 @@ bool icl_is_nv12_y_plane(struct drm_i915_private *dev_priv,
 u8 icl_hdr_plane_mask(void);
 bool icl_is_hdr_plane(struct drm_i915_private *dev_priv, enum plane_id plane_id);
 
-u32 skl_plane_ddb_reg_val(const struct skl_ddb_entry *entry);
-u32 skl_plane_wm_reg_val(const struct skl_wm_level *level);
-
 #endif