drm/komeda: Added AFBC support for komeda driver
authorjames qian wang (Arm Technology China) <james.qian.wang@arm.com>
Thu, 23 May 2019 09:56:54 +0000 (10:56 +0100)
committerLiviu Dudau <Liviu.Dudau@arm.com>
Wed, 19 Jun 2019 10:42:16 +0000 (11:42 +0100)
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/59915/
- https://patchwork.freedesktop.org/series/59000/

v2: Rebase and addressed Ayan's comments

Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
drivers/gpu/drm/arm/display/komeda/komeda_format_caps.c
drivers/gpu/drm/arm/display/komeda/komeda_format_caps.h
drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c
drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.h
drivers/gpu/drm/arm/display/komeda/komeda_kms.c
drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
drivers/gpu/drm/arm/display/komeda/komeda_plane.c

index 323e599..5c9bc85 100644 (file)
@@ -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));
 
index 1e17bd6..b219514 100644 (file)
@@ -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)
 {
index 60f39e7..bc3b2df 100644 (file)
@@ -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
index 4d8160c..d0e713a 100644 (file)
@@ -37,6 +37,76 @@ static const struct drm_framebuffer_funcs komeda_fb_funcs = {
 };
 
 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:
+               WARN(1, "Invalid AFBC_FORMAT_MOD_BLOCK_SIZE: %lld.\n",
+                    fb->modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK);
+               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 check_failed;
+       }
+
+       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 check_failed;
+       }
+
+       fb->obj[0] = obj;
+       return 0;
+
+check_failed:
+       drm_gem_object_put_unlocked(obj);
+       return -EINVAL;
+}
+
+static int
 komeda_fb_none_afbc_size_check(struct komeda_dev *mdev, struct komeda_fb *kfb,
                               struct drm_file *file,
                               const struct drm_mode_fb_cmd2 *mode_cmd)
@@ -118,7 +188,10 @@ 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;
 
index ea2fe19..e3bab0d 100644 (file)
@@ -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)
index 3e58901..306ea06 100644 (file)
@@ -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;
index 1b7e933..fdde93b 100644 (file)
@@ -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];
 };
 
index 9748c94..db2c3d6 100644 (file)
@@ -291,8 +291,22 @@ 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,
index c97062b..7516660 100644 (file)
@@ -151,6 +151,18 @@ 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,
@@ -158,6 +170,7 @@ 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 */
@@ -210,7 +223,7 @@ 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);