From c410fa9b07c32cc69968ec83a148366d16c76dc4 Mon Sep 17 00:00:00 2001 From: Justin Green Date: Wed, 16 Nov 2022 14:33:35 -0500 Subject: [PATCH] drm/mediatek: Add AFBC support to Mediatek DRM driver Tested on MT8195 and confirmed both correct video output and improved DRAM bandwidth performance. Signed-off-by: Justin Green Reviewed-by: AngeloGioacchino Del Regno Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20221116193335.36320-1-greenjustin@google.com/ Signed-off-by: Chun-Kuang Hu --- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 46 ++++++++++++++- drivers/gpu/drm/mediatek/mtk_drm_plane.c | 74 +++++++++++++++++++++++- drivers/gpu/drm/mediatek/mtk_drm_plane.h | 8 +++ 3 files changed, 123 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 002b0f6cae1a..5a60c3b504ff 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -29,17 +29,22 @@ #define DISP_REG_OVL_DATAPATH_CON 0x0024 #define OVL_LAYER_SMI_ID_EN BIT(0) #define OVL_BGCLR_SEL_IN BIT(2) +#define OVL_LAYER_AFBC_EN(n) BIT(4+n) #define DISP_REG_OVL_ROI_BGCLR 0x0028 #define DISP_REG_OVL_SRC_CON 0x002c #define DISP_REG_OVL_CON(n) (0x0030 + 0x20 * (n)) #define DISP_REG_OVL_SRC_SIZE(n) (0x0038 + 0x20 * (n)) #define DISP_REG_OVL_OFFSET(n) (0x003c + 0x20 * (n)) +#define DISP_REG_OVL_PITCH_MSB(n) (0x0040 + 0x20 * (n)) +#define OVL_PITCH_MSB_2ND_SUBBUF BIT(16) #define DISP_REG_OVL_PITCH(n) (0x0044 + 0x20 * (n)) #define DISP_REG_OVL_RDMA_CTRL(n) (0x00c0 + 0x20 * (n)) #define DISP_REG_OVL_RDMA_GMC(n) (0x00c8 + 0x20 * (n)) #define DISP_REG_OVL_ADDR_MT2701 0x0040 #define DISP_REG_OVL_ADDR_MT8173 0x0f40 #define DISP_REG_OVL_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n)) +#define DISP_REG_OVL_HDR_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n) + 0x04) +#define DISP_REG_OVL_HDR_PITCH(ovl, n) ((ovl)->data->addr + 0x20 * (n) + 0x08) #define GMC_THRESHOLD_BITS 16 #define GMC_THRESHOLD_HIGH ((1 << GMC_THRESHOLD_BITS) / 4) @@ -67,6 +72,7 @@ struct mtk_disp_ovl_data { unsigned int layer_nr; bool fmt_rgb565_is_0; bool smi_id_en; + bool supports_afbc; }; /* @@ -172,7 +178,14 @@ void mtk_ovl_stop(struct device *dev) reg = reg & ~OVL_LAYER_SMI_ID_EN; writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON); } +} +static void mtk_ovl_set_afbc(struct mtk_disp_ovl *ovl, struct cmdq_pkt *cmdq_pkt, + int idx, bool enabled) +{ + mtk_ddp_write_mask(cmdq_pkt, enabled ? OVL_LAYER_AFBC_EN(idx) : 0, + &ovl->cmdq_reg, ovl->regs, + DISP_REG_OVL_DATAPATH_CON, OVL_LAYER_AFBC_EN(idx)); } void mtk_ovl_config(struct device *dev, unsigned int w, @@ -310,11 +323,23 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, struct mtk_disp_ovl *ovl = dev_get_drvdata(dev); struct mtk_plane_pending_state *pending = &state->pending; unsigned int addr = pending->addr; - unsigned int pitch = pending->pitch & 0xffff; + unsigned int hdr_addr = pending->hdr_addr; + unsigned int pitch = pending->pitch; + unsigned int hdr_pitch = pending->hdr_pitch; unsigned int fmt = pending->format; unsigned int offset = (pending->y << 16) | pending->x; unsigned int src_size = (pending->height << 16) | pending->width; unsigned int con; + bool is_afbc = pending->modifier != DRM_FORMAT_MOD_LINEAR; + union overlay_pitch { + struct split_pitch { + u16 lsb; + u16 msb; + } split_pitch; + u32 pitch; + } overlay_pitch; + + overlay_pitch.pitch = pitch; if (!pending->enable) { mtk_ovl_layer_off(dev, idx, cmdq_pkt); @@ -335,9 +360,12 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, addr += pending->pitch - 1; } + if (ovl->data->supports_afbc) + mtk_ovl_set_afbc(ovl, cmdq_pkt, idx, is_afbc); + mtk_ddp_write_relaxed(cmdq_pkt, con, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_CON(idx)); - mtk_ddp_write_relaxed(cmdq_pkt, pitch, &ovl->cmdq_reg, ovl->regs, + mtk_ddp_write_relaxed(cmdq_pkt, overlay_pitch.split_pitch.lsb, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH(idx)); mtk_ddp_write_relaxed(cmdq_pkt, src_size, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_SRC_SIZE(idx)); @@ -346,6 +374,20 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx, mtk_ddp_write_relaxed(cmdq_pkt, addr, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_ADDR(ovl, idx)); + if (is_afbc) { + mtk_ddp_write_relaxed(cmdq_pkt, hdr_addr, &ovl->cmdq_reg, ovl->regs, + DISP_REG_OVL_HDR_ADDR(ovl, idx)); + mtk_ddp_write_relaxed(cmdq_pkt, + OVL_PITCH_MSB_2ND_SUBBUF | overlay_pitch.split_pitch.msb, + &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH_MSB(idx)); + mtk_ddp_write_relaxed(cmdq_pkt, hdr_pitch, &ovl->cmdq_reg, ovl->regs, + DISP_REG_OVL_HDR_PITCH(ovl, idx)); + } else { + mtk_ddp_write_relaxed(cmdq_pkt, + overlay_pitch.split_pitch.msb, + &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH_MSB(idx)); + } + mtk_ovl_layer_on(dev, idx, cmdq_pkt); } diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c index 2f5e007dd380..d54fbf34b000 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "mtk_drm_crtc.h" #include "mtk_drm_ddp_comp.h" @@ -32,6 +33,14 @@ static const u32 formats[] = { DRM_FORMAT_YUYV, }; +static const u64 modifiers[] = { + DRM_FORMAT_MOD_LINEAR, + DRM_FORMAT_MOD_ARM_AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | + AFBC_FORMAT_MOD_SPLIT | + AFBC_FORMAT_MOD_SPARSE), + DRM_FORMAT_MOD_INVALID, +}; + static void mtk_plane_reset(struct drm_plane *plane) { struct mtk_plane_state *state; @@ -51,6 +60,7 @@ static void mtk_plane_reset(struct drm_plane *plane) state->base.plane = plane; state->pending.format = DRM_FORMAT_RGB565; + state->pending.modifier = DRM_FORMAT_MOD_LINEAR; } static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane) @@ -71,6 +81,32 @@ static struct drm_plane_state *mtk_plane_duplicate_state(struct drm_plane *plane return &state->base; } +static bool mtk_plane_format_mod_supported(struct drm_plane *plane, + uint32_t format, + uint64_t modifier) +{ + if (modifier == DRM_FORMAT_MOD_LINEAR) + return true; + + if (modifier != DRM_FORMAT_MOD_ARM_AFBC( + AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | + AFBC_FORMAT_MOD_SPLIT | + AFBC_FORMAT_MOD_SPARSE)) + return false; + + if (format != DRM_FORMAT_XRGB8888 && + format != DRM_FORMAT_ARGB8888 && + format != DRM_FORMAT_BGRX8888 && + format != DRM_FORMAT_BGRA8888 && + format != DRM_FORMAT_ABGR8888 && + format != DRM_FORMAT_XBGR8888 && + format != DRM_FORMAT_RGB888 && + format != DRM_FORMAT_BGR888) + return false; + + return true; +} + static void mtk_drm_plane_destroy_state(struct drm_plane *plane, struct drm_plane_state *state) { @@ -119,21 +155,52 @@ static void mtk_plane_update_new_state(struct drm_plane_state *new_state, struct drm_gem_object *gem; struct mtk_drm_gem_obj *mtk_gem; unsigned int pitch, format; + u64 modifier; dma_addr_t addr; + dma_addr_t hdr_addr = 0; + unsigned int hdr_pitch = 0; gem = fb->obj[0]; mtk_gem = to_mtk_gem_obj(gem); addr = mtk_gem->dma_addr; pitch = fb->pitches[0]; format = fb->format->format; + modifier = fb->modifier; - addr += (new_state->src.x1 >> 16) * fb->format->cpp[0]; - addr += (new_state->src.y1 >> 16) * pitch; + if (modifier == DRM_FORMAT_MOD_LINEAR) { + addr += (new_state->src.x1 >> 16) * fb->format->cpp[0]; + addr += (new_state->src.y1 >> 16) * pitch; + } else { + int width_in_blocks = ALIGN(fb->width, AFBC_DATA_BLOCK_WIDTH) + / AFBC_DATA_BLOCK_WIDTH; + int height_in_blocks = ALIGN(fb->height, AFBC_DATA_BLOCK_HEIGHT) + / AFBC_DATA_BLOCK_HEIGHT; + int x_offset_in_blocks = (new_state->src.x1 >> 16) / AFBC_DATA_BLOCK_WIDTH; + int y_offset_in_blocks = (new_state->src.y1 >> 16) / AFBC_DATA_BLOCK_HEIGHT; + int hdr_size; + + hdr_pitch = width_in_blocks * AFBC_HEADER_BLOCK_SIZE; + pitch = width_in_blocks * AFBC_DATA_BLOCK_WIDTH * + AFBC_DATA_BLOCK_HEIGHT * fb->format->cpp[0]; + + hdr_size = ALIGN(hdr_pitch * height_in_blocks, AFBC_HEADER_ALIGNMENT); + + hdr_addr = addr + hdr_pitch * y_offset_in_blocks + + AFBC_HEADER_BLOCK_SIZE * x_offset_in_blocks; + /* The data plane is offset by 1 additional block. */ + addr = addr + hdr_size + + pitch * y_offset_in_blocks + + AFBC_DATA_BLOCK_WIDTH * AFBC_DATA_BLOCK_HEIGHT * + fb->format->cpp[0] * (x_offset_in_blocks + 1); + } mtk_plane_state->pending.enable = true; mtk_plane_state->pending.pitch = pitch; + mtk_plane_state->pending.hdr_pitch = hdr_pitch; mtk_plane_state->pending.format = format; + mtk_plane_state->pending.modifier = modifier; mtk_plane_state->pending.addr = addr; + mtk_plane_state->pending.hdr_addr = hdr_addr; mtk_plane_state->pending.x = new_state->dst.x1; mtk_plane_state->pending.y = new_state->dst.y1; mtk_plane_state->pending.width = drm_rect_width(&new_state->dst); @@ -172,6 +239,7 @@ static const struct drm_plane_funcs mtk_plane_funcs = { .reset = mtk_plane_reset, .atomic_duplicate_state = mtk_plane_duplicate_state, .atomic_destroy_state = mtk_drm_plane_destroy_state, + .format_mod_supported = mtk_plane_format_mod_supported, }; static int mtk_plane_atomic_check(struct drm_plane *plane, @@ -253,7 +321,7 @@ int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane, err = drm_universal_plane_init(dev, plane, possible_crtcs, &mtk_plane_funcs, formats, - ARRAY_SIZE(formats), NULL, type, NULL); + ARRAY_SIZE(formats), modifiers, type, NULL); if (err) { DRM_ERROR("failed to initialize plane\n"); return err; diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.h b/drivers/gpu/drm/mediatek/mtk_drm_plane.h index 2d5ec66e3df1..8f39011cdbfc 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.h @@ -10,12 +10,20 @@ #include #include +#define AFBC_DATA_BLOCK_WIDTH 32 +#define AFBC_DATA_BLOCK_HEIGHT 8 +#define AFBC_HEADER_BLOCK_SIZE 16 +#define AFBC_HEADER_ALIGNMENT 1024 + struct mtk_plane_pending_state { bool config; bool enable; dma_addr_t addr; + dma_addr_t hdr_addr; unsigned int pitch; + unsigned int hdr_pitch; unsigned int format; + unsigned long long modifier; unsigned int x; unsigned int y; unsigned int width; -- 2.25.1