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Date:   Tue, 22 Jan 2019 09:23:49 +0000
From:   "james qian wang (Arm Technology China)" <james.qian.wang@....com>
To:     Liviu Dudau <Liviu.Dudau@....com>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        Brian Starkey <Brian.Starkey@....com>
CC:     "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
        "Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
        "thomas Sun (Arm Technology China)" <thomas.Sun@....com>,
        "Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
        Ayan Halder <Ayan.Halder@....com>,
        "Tiannan Zhu (Arm Technology China)" <Tiannan.Zhu@....com>,
        "Jin Gao (Arm Technology China)" <Jin.Gao@....com>,
        "Yiqi Kang (Arm Technology China)" <Yiqi.Kang@....com>,
        nd <nd@....com>, "malidp@...s.arm.com" <malidp@...s.arm.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "james qian wang (Arm Technology China)" <james.qian.wang@....com>
Subject: [PATCH v2 2/7] drm/komeda: Add d71 layer

From: "james qian wang (Arm Technology China)" <james.qian.wang@....com>

1. Add detailed layer/layer_state definitions
2. Add d71_layer_init to report layer features and capabilities according
   to D71 layer block.
3. Add d71_layer_updat/disable

v2: Rebase.

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@....com>
---
 .../drm/arm/display/include/malidp_utils.h    |  17 ++
 .../arm/display/komeda/d71/d71_component.c    | 162 +++++++++++++++++-
 .../drm/arm/display/komeda/komeda_pipeline.h  |  10 +-
 3 files changed, 185 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/arm/display/include/malidp_utils.h b/drivers/gpu/drm/arm/display/include/malidp_utils.h
index b7bf8db39a64..e97df5fbc9ea 100644
--- a/drivers/gpu/drm/arm/display/include/malidp_utils.h
+++ b/drivers/gpu/drm/arm/display/include/malidp_utils.h
@@ -25,4 +25,21 @@
 	num_tries;					\
 })
 
+/* the restriction of range is [start, end] */
+struct malidp_range {
+	u32 start;
+	u32 end;
+};
+
+static inline void set_range(struct malidp_range *rg, u32 start, u32 end)
+{
+	rg->start = start;
+	rg->end   = end;
+}
+
+static inline bool in_range(struct malidp_range *rg, u32 v)
+{
+	return (v >= rg->start) && (v <= rg->end);
+}
+
 #endif /* _MALIDP_UTILS_ */
diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
index 18a36dd71567..0a602e875f5e 100644
--- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
@@ -7,11 +7,171 @@
 #include "d71_dev.h"
 #include "komeda_kms.h"
 #include "malidp_io.h"
+#include "komeda_framebuffer.h"
+
+static void get_resources_id(u32 hw_id, u32 *pipe_id, u32 *comp_id)
+{
+	u32 id = BLOCK_INFO_BLK_ID(hw_id);
+	u32 pipe = id;
+
+	switch (BLOCK_INFO_BLK_TYPE(hw_id)) {
+	case D71_BLK_TYPE_LPU_WB_LAYER:
+		id = KOMEDA_COMPONENT_WB_LAYER;
+		break;
+	case D71_BLK_TYPE_CU_SPLITTER:
+		id = KOMEDA_COMPONENT_SPLITTER;
+		break;
+	case D71_BLK_TYPE_CU_SCALER:
+		pipe = id / D71_PIPELINE_MAX_SCALERS;
+		id %= D71_PIPELINE_MAX_SCALERS;
+		id += KOMEDA_COMPONENT_SCALER0;
+		break;
+	case D71_BLK_TYPE_CU:
+		id += KOMEDA_COMPONENT_COMPIZ0;
+		break;
+	case D71_BLK_TYPE_LPU_LAYER:
+		pipe = id / D71_PIPELINE_MAX_LAYERS;
+		id %= D71_PIPELINE_MAX_LAYERS;
+		id += KOMEDA_COMPONENT_LAYER0;
+		break;
+	case D71_BLK_TYPE_DOU_IPS:
+		id += KOMEDA_COMPONENT_IPS0;
+		break;
+	case D71_BLK_TYPE_CU_MERGER:
+		id = KOMEDA_COMPONENT_MERGER;
+		break;
+	case D71_BLK_TYPE_DOU:
+		id = KOMEDA_COMPONENT_TIMING_CTRLR;
+		break;
+	default:
+		id = 0xFFFFFFFF;
+	}
+
+	if (comp_id)
+		*comp_id = id;
+
+	if (pipe_id)
+		*pipe_id = pipe;
+}
+
+static u32 get_valid_inputs(struct block_header *blk)
+{
+	u32 valid_inputs = 0, comp_id;
+	int i;
+
+	for (i = 0; i < PIPELINE_INFO_N_VALID_INPUTS(blk->pipeline_info); i++) {
+		get_resources_id(blk->input_ids[i], NULL, &comp_id);
+		if (comp_id == 0xFFFFFFFF)
+			continue;
+		valid_inputs |= BIT(comp_id);
+	}
+
+	return valid_inputs;
+}
+
+static u32 to_rot_ctrl(u32 rot)
+{
+	u32 lr_ctrl = 0;
+
+	switch (rot & DRM_MODE_ROTATE_MASK) {
+	case DRM_MODE_ROTATE_0:
+		lr_ctrl |= L_ROT(L_ROT_R0);
+		break;
+	case DRM_MODE_ROTATE_90:
+		lr_ctrl |= L_ROT(L_ROT_R90);
+		break;
+	case DRM_MODE_ROTATE_180:
+		lr_ctrl |= L_ROT(L_ROT_R180);
+		break;
+	case DRM_MODE_ROTATE_270:
+		lr_ctrl |= L_ROT(L_ROT_R270);
+		break;
+	}
+
+	if (rot & DRM_MODE_REFLECT_X)
+		lr_ctrl |= L_HFLIP;
+	if (rot & DRM_MODE_REFLECT_Y)
+		lr_ctrl |= L_VFLIP;
+
+	return lr_ctrl;
+}
+
+static void d71_layer_disable(struct komeda_component *c)
+{
+	malidp_write32_mask(c->reg, BLK_CONTROL, L_EN, 0);
+}
+
+static void d71_layer_update(struct komeda_component *c,
+			     struct komeda_component_state *state)
+{
+	struct komeda_layer_state *st = to_layer_st(state);
+	struct drm_plane_state *plane_st = state->plane->state;
+	struct drm_framebuffer *fb = plane_st->fb;
+	struct komeda_fb *kfb = to_kfb(fb);
+	u32 __iomem *reg = c->reg;
+	u32 ctrl_mask = L_EN | L_ROT(L_ROT_R270) | L_HFLIP | L_VFLIP | L_TBU_EN;
+	u32 ctrl = L_EN | to_rot_ctrl(st->rot);
+	int i;
+
+	for (i = 0; i < fb->format->num_planes; i++) {
+		malidp_write32(reg,
+			       BLK_P0_PTR_LOW + i * LAYER_PER_PLANE_REGS * 4,
+			       lower_32_bits(st->addr[i]));
+		malidp_write32(reg,
+			       BLK_P0_PTR_HIGH + i * LAYER_PER_PLANE_REGS * 4,
+			       upper_32_bits(st->addr[i]));
+		if (i >= 2)
+			break;
+
+		malidp_write32(reg,
+			       BLK_P0_STRIDE + i * LAYER_PER_PLANE_REGS * 4,
+			       fb->pitches[i] & 0xFFFF);
+	}
+
+	malidp_write32(reg, LAYER_FMT, kfb->format_caps->hw_id);
+	malidp_write32(reg, BLK_IN_SIZE, HV_SIZE(st->hsize, st->vsize));
+
+	malidp_write32_mask(reg, BLK_CONTROL, ctrl_mask, ctrl);
+}
+
+struct komeda_component_funcs d71_layer_funcs = {
+	.update		= d71_layer_update,
+	.disable	= d71_layer_disable,
+};
 
 static int d71_layer_init(struct d71_dev *d71,
 			  struct block_header *blk, u32 __iomem *reg)
 {
-	DRM_DEBUG("Detect D71_Layer.\n");
+	struct komeda_component *c;
+	struct komeda_layer *layer;
+	u32 pipe_id, layer_id, layer_info;
+
+	get_resources_id(blk->block_info, &pipe_id, &layer_id);
+	c = komeda_component_add(&d71->pipes[pipe_id]->base, sizeof(*layer),
+				 layer_id,
+				 BLOCK_INFO_INPUT_ID(blk->block_info),
+				 &d71_layer_funcs, 0,
+				 get_valid_inputs(blk),
+				 1, reg, "LPU%d_LAYER%d", pipe_id, layer_id);
+	if (IS_ERR(c)) {
+		DRM_ERROR("Failed to add layer component\n");
+		return PTR_ERR(c);
+	}
+
+	layer = to_layer(c);
+	layer_info = malidp_read32(reg, LAYER_INFO);
+
+	if (layer_info & L_INFO_RF)
+		layer->layer_type = KOMEDA_FMT_RICH_LAYER;
+	else
+		layer->layer_type = KOMEDA_FMT_SIMPLE_LAYER;
+
+	set_range(&layer->hsize_in, 4, d71->max_line_size);
+	set_range(&layer->vsize_in, 4, d71->max_vsize);
+
+	malidp_write32(reg, LAYER_PALPHA, D71_PALPHA_DEF_MAP);
+
+	layer->supported_rots = DRM_MODE_ROTATE_MASK | DRM_MODE_REFLECT_MASK;
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index 8c950bc8ae96..03525330efe8 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -207,16 +207,20 @@ static inline u16 component_changed_inputs(struct komeda_component_state *st)
 #define to_comp(__c)	(((__c) == NULL) ? NULL : &((__c)->base))
 #define to_cpos(__c)	((struct komeda_component **)&(__c))
 
-/* these structures are going to be filled in in uture patches */
 struct komeda_layer {
 	struct komeda_component base;
-	/* layer specific features and caps */
-	int layer_type; /* RICH, SIMPLE or WB */
+	/* accepted h/v input range before rotation */
+	struct malidp_range hsize_in, vsize_in;
+	u32 layer_type; /* RICH, SIMPLE or WB */
+	u32 supported_rots;
 };
 
 struct komeda_layer_state {
 	struct komeda_component_state base;
 	/* layer specific configuration state */
+	u16 hsize, vsize;
+	u32 rot;
+	dma_addr_t addr[3];
 };
 
 struct komeda_compiz {
-- 
2.17.1

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