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Subject[PATCH] drm/komeda: Added AFBC support for komeda driver
Date
For supporting AFBC:
1. Check if the user requested modifier can be supported by display HW.
2. Check the obj->size with AFBC's requirement.
3. Configure HW according to the modifier (afbc features)

This patch depends on:
- https://patchwork.freedesktop.org/series/54448/
- https://patchwork.freedesktop.org/series/54449/
- https://patchwork.freedesktop.org/series/54450/
- https://patchwork.freedesktop.org/series/58976/
- https://patchwork.freedesktop.org/series/59000/

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
---
.../arm/display/komeda/d71/d71_component.c | 39 ++++++++++
.../arm/display/komeda/komeda_format_caps.c | 53 +++++++++++++
.../arm/display/komeda/komeda_format_caps.h | 5 ++
.../arm/display/komeda/komeda_framebuffer.c | 74 ++++++++++++++++++-
.../arm/display/komeda/komeda_framebuffer.h | 4 +
.../gpu/drm/arm/display/komeda/komeda_kms.c | 2 +-
.../drm/arm/display/komeda/komeda_pipeline.h | 4 +
.../display/komeda/komeda_pipeline_state.c | 18 ++++-
.../gpu/drm/arm/display/komeda/komeda_plane.c | 15 +++-
9 files changed, 209 insertions(+), 5 deletions(-)

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 b582afcf9210..33ca1718b5cd 100644
--- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
@@ -134,6 +134,27 @@ static u32 to_rot_ctrl(u32 rot)
return lr_ctrl;
}

+static u32 to_ad_ctrl(u64 modifier)
+{
+ u32 afbc_ctrl = AD_AEN;
+
+ if (!modifier)
+ return 0;
+
+ if ((modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) ==
+ AFBC_FORMAT_MOD_BLOCK_SIZE_32x8)
+ afbc_ctrl |= AD_WB;
+
+ if (modifier & AFBC_FORMAT_MOD_YTR)
+ afbc_ctrl |= AD_YT;
+ if (modifier & AFBC_FORMAT_MOD_SPLIT)
+ afbc_ctrl |= AD_BS;
+ if (modifier & AFBC_FORMAT_MOD_TILED)
+ afbc_ctrl |= AD_TH;
+
+ return afbc_ctrl;
+}
+
static inline u32 to_d71_input_id(struct komeda_component_output *output)
{
struct komeda_component *comp = output->component;
@@ -173,6 +194,24 @@ static void d71_layer_update(struct komeda_component *c,
fb->pitches[i] & 0xFFFF);
}

+ malidp_write32(reg, AD_CONTROL, to_ad_ctrl(fb->modifier));
+ if (fb->modifier) {
+ u64 addr;
+
+ malidp_write32(reg, LAYER_AD_H_CROP, HV_CROP(st->afbc_crop_l,
+ st->afbc_crop_r));
+ malidp_write32(reg, LAYER_AD_V_CROP, HV_CROP(st->afbc_crop_t,
+ st->afbc_crop_b));
+ /* afbc 1.2 wants payload, afbc 1.0/1.1 wants end_addr */
+ if (fb->modifier & AFBC_FORMAT_MOD_TILED)
+ addr = st->addr[0] + kfb->offset_payload;
+ else
+ addr = st->addr[0] + kfb->afbc_size - 1;
+
+ malidp_write32(reg, BLK_P1_PTR_LOW, lower_32_bits(addr));
+ malidp_write32(reg, BLK_P1_PTR_HIGH, upper_32_bits(addr));
+ }
+
malidp_write32(reg, LAYER_FMT, kfb->format_caps->hw_id);
malidp_write32(reg, BLK_IN_SIZE, HV_SIZE(st->hsize, st->vsize));

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
index 1e17bd6107a4..b2195142e3f3 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
@@ -35,6 +35,59 @@ komeda_get_format_caps(struct komeda_format_caps_table *table,
return NULL;
}

+/* Two assumptions
+ * 1. RGB always has YTR
+ * 2. Tiled RGB always has SC
+ */
+u64 komeda_supported_modifiers[] = {
+ /* AFBC_16x16 + features: YUV+RGB both */
+ AFBC_16x16(0),
+ /* SPARSE */
+ AFBC_16x16(_SPARSE),
+ /* YTR + (SPARSE) */
+ AFBC_16x16(_YTR | _SPARSE),
+ AFBC_16x16(_YTR),
+ /* SPLIT + SPARSE + YTR RGB only */
+ /* split mode is only allowed for sparse mode */
+ AFBC_16x16(_SPLIT | _SPARSE | _YTR),
+ /* TILED + (SPARSE) */
+ /* TILED YUV format only */
+ AFBC_16x16(_TILED | _SPARSE),
+ AFBC_16x16(_TILED),
+ /* TILED + SC + (SPLIT+SPARSE | SPARSE) + (YTR) */
+ AFBC_16x16(_TILED | _SC | _SPLIT | _SPARSE | _YTR),
+ AFBC_16x16(_TILED | _SC | _SPARSE | _YTR),
+ AFBC_16x16(_TILED | _SC | _YTR),
+ /* AFBC_32x8 + features: which are RGB formats only */
+ /* YTR + (SPARSE) */
+ AFBC_32x8(_YTR | _SPARSE),
+ AFBC_32x8(_YTR),
+ /* SPLIT + SPARSE + (YTR) */
+ /* split mode is only allowed for sparse mode */
+ AFBC_32x8(_SPLIT | _SPARSE | _YTR),
+ /* TILED + SC + (SPLIT+SPARSE | SPARSE) + YTR */
+ AFBC_32x8(_TILED | _SC | _SPLIT | _SPARSE | _YTR),
+ AFBC_32x8(_TILED | _SC | _SPARSE | _YTR),
+ AFBC_32x8(_TILED | _SC | _YTR),
+ DRM_FORMAT_MOD_LINEAR,
+ DRM_FORMAT_MOD_INVALID
+};
+
+bool komeda_format_mod_supported(struct komeda_format_caps_table *table,
+ u32 layer_type, u32 fourcc, u64 modifier)
+{
+ const struct komeda_format_caps *caps;
+
+ caps = komeda_get_format_caps(table, fourcc, modifier);
+ if (!caps)
+ return false;
+
+ if (!(caps->supported_layer_types & layer_type))
+ return false;
+
+ return true;
+}
+
u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
u32 layer_type, u32 *n_fmts)
{
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
index 60f39e77b098..bc3b2df361b9 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
@@ -77,6 +77,8 @@ struct komeda_format_caps_table {
const struct komeda_format_caps *format_caps;
};

+extern u64 komeda_supported_modifiers[];
+
const struct komeda_format_caps *
komeda_get_format_caps(struct komeda_format_caps_table *table,
u32 fourcc, u64 modifier);
@@ -86,4 +88,7 @@ u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,

void komeda_put_fourcc_list(u32 *fourcc_list);

+bool komeda_format_mod_supported(struct komeda_format_caps_table *table,
+ u32 layer_type, u32 fourcc, u64 modifier);
+
#endif
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
index 4d8160cf09c3..f842c886c73c 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
@@ -36,6 +36,75 @@ static const struct drm_framebuffer_funcs komeda_fb_funcs = {
.create_handle = komeda_fb_create_handle,
};

+static int
+komeda_fb_afbc_size_check(struct komeda_fb *kfb, struct drm_file *file,
+ const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ struct drm_framebuffer *fb = &kfb->base;
+ const struct drm_format_info *info = fb->format;
+ struct drm_gem_object *obj;
+ u32 alignment_w = 0, alignment_h = 0, alignment_header;
+ u32 n_blocks = 0, min_size = 0;
+
+ obj = drm_gem_object_lookup(file, mode_cmd->handles[0]);
+ if (!obj) {
+ DRM_DEBUG_KMS("Failed to lookup GEM object\n");
+ return -ENOENT;
+ }
+
+ switch (fb->modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) {
+ case AFBC_FORMAT_MOD_BLOCK_SIZE_32x8:
+ alignment_w = 32;
+ alignment_h = 8;
+ break;
+ case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16:
+ alignment_w = 16;
+ alignment_h = 16;
+ break;
+ default:
+ break;
+ }
+
+ /* tiled header afbc */
+ if (fb->modifier & AFBC_FORMAT_MOD_TILED) {
+ alignment_w *= AFBC_TH_LAYOUT_ALIGNMENT;
+ alignment_h *= AFBC_TH_LAYOUT_ALIGNMENT;
+ alignment_header = AFBC_TH_BODY_START_ALIGNMENT;
+ } else {
+ alignment_header = AFBC_BODY_START_ALIGNMENT;
+ }
+
+ kfb->aligned_w = ALIGN(fb->width, alignment_w);
+ kfb->aligned_h = ALIGN(fb->height, alignment_h);
+
+ if (fb->offsets[0] % alignment_header) {
+ DRM_DEBUG_KMS("afbc offset alignment check failed.\n");
+ goto afbc_unreference;
+ }
+
+ n_blocks = (kfb->aligned_w * kfb->aligned_h) / AFBC_SUPERBLK_PIXELS;
+ kfb->offset_payload = ALIGN(n_blocks * AFBC_HEADER_SIZE,
+ alignment_header);
+
+ kfb->afbc_size = kfb->offset_payload + n_blocks *
+ ALIGN(info->cpp[0] * AFBC_SUPERBLK_PIXELS,
+ AFBC_SUPERBLK_ALIGNMENT);
+ min_size = kfb->afbc_size + fb->offsets[0];
+ if (min_size > obj->size) {
+ DRM_DEBUG_KMS("afbc size check failed, obj_size: 0x%lx. min_size 0x%x.\n",
+ obj->size, min_size);
+ goto afbc_unreference;
+ }
+
+ fb->obj[0] = obj;
+ return 0;
+
+afbc_unreference:
+ drm_gem_object_put_unlocked(obj);
+ fb->obj[0] = NULL;
+ return -EINVAL;
+}
+
static int
komeda_fb_none_afbc_size_check(struct komeda_dev *mdev, struct komeda_fb *kfb,
struct drm_file *file,
@@ -118,7 +187,10 @@ komeda_fb_create(struct drm_device *dev, struct drm_file *file,

drm_helper_mode_fill_fb_struct(dev, &kfb->base, mode_cmd);

- ret = komeda_fb_none_afbc_size_check(mdev, kfb, file, mode_cmd);
+ if (kfb->base.modifier)
+ ret = komeda_fb_afbc_size_check(kfb, file, mode_cmd);
+ else
+ ret = komeda_fb_none_afbc_size_check(mdev, kfb, file, mode_cmd);
if (ret < 0)
goto err_cleanup;

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.h b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.h
index ea2fe190c1e3..e3bab0defd72 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.h
@@ -25,6 +25,10 @@ struct komeda_fb {
u32 aligned_w;
/** @aligned_h: aligned frame buffer height */
u32 aligned_h;
+ /** @afbc_size: minimum size of afbc */
+ u32 afbc_size;
+ /** @offset_payload: start of afbc body buffer */
+ u32 offset_payload;
};

#define to_kfb(dfb) container_of(dfb, struct komeda_fb, base)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
index 3e58901fb776..306ea069a1b4 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -148,7 +148,7 @@ static void komeda_kms_mode_config_init(struct komeda_kms_dev *kms,
config->min_height = 0;
config->max_width = 4096;
config->max_height = 4096;
- config->allow_fb_modifiers = false;
+ config->allow_fb_modifiers = true;

config->funcs = &komeda_mode_config_funcs;
config->helper_private = &komeda_mode_config_helpers;
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index 7998a1e456b7..ba5bc0810c81 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -235,6 +235,10 @@ struct komeda_layer_state {
/* layer specific configuration state */
u16 hsize, vsize;
u32 rot;
+ u16 afbc_crop_l;
+ u16 afbc_crop_r;
+ u16 afbc_crop_t;
+ u16 afbc_crop_b;
dma_addr_t addr[3];
};

diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
index 944dca2e3379..9b29e9a9f49c 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
@@ -289,8 +289,22 @@ komeda_layer_validate(struct komeda_layer *layer,
st = to_layer_st(c_st);

st->rot = dflow->rot;
- st->hsize = kfb->aligned_w;
- st->vsize = kfb->aligned_h;
+
+ if (fb->modifier) {
+ st->hsize = kfb->aligned_w;
+ st->vsize = kfb->aligned_h;
+ st->afbc_crop_l = dflow->in_x;
+ st->afbc_crop_r = kfb->aligned_w - dflow->in_x - dflow->in_w;
+ st->afbc_crop_t = dflow->in_y;
+ st->afbc_crop_b = kfb->aligned_h - dflow->in_y - dflow->in_h;
+ } else {
+ st->hsize = dflow->in_w;
+ st->vsize = dflow->in_h;
+ st->afbc_crop_l = 0;
+ st->afbc_crop_r = 0;
+ st->afbc_crop_t = 0;
+ st->afbc_crop_b = 0;
+ }

for (i = 0; i < fb->format->num_planes; i++)
st->addr[i] = komeda_fb_get_pixel_addr(kfb, dflow->in_x,
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
index aae5e800bed4..14d68612052f 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
@@ -150,6 +150,18 @@ komeda_plane_atomic_destroy_state(struct drm_plane *plane,
kfree(to_kplane_st(state));
}

+static bool
+komeda_plane_format_mod_supported(struct drm_plane *plane,
+ u32 format, u64 modifier)
+{
+ struct komeda_dev *mdev = plane->dev->dev_private;
+ struct komeda_plane *kplane = to_kplane(plane);
+ u32 layer_type = kplane->layer->layer_type;
+
+ return komeda_format_mod_supported(&mdev->fmt_tbl, layer_type,
+ format, modifier);
+}
+
static const struct drm_plane_funcs komeda_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
@@ -157,6 +169,7 @@ static const struct drm_plane_funcs komeda_plane_funcs = {
.reset = komeda_plane_reset,
.atomic_duplicate_state = komeda_plane_atomic_duplicate_state,
.atomic_destroy_state = komeda_plane_atomic_destroy_state,
+ .format_mod_supported = komeda_plane_format_mod_supported,
};

/* for komeda, which is pipeline can be share between crtcs */
@@ -209,7 +222,7 @@ static int komeda_plane_add(struct komeda_kms_dev *kms,
err = drm_universal_plane_init(&kms->base, plane,
get_possible_crtcs(kms, c->pipeline),
&komeda_plane_funcs,
- formats, n_formats, NULL,
+ formats, n_formats, komeda_supported_modifiers,
get_plane_type(kms, c),
"%s", c->name);

--
2.17.1
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