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drm/komeda: Adds layer horizontal input size limitation check for D71 

Adds maximum line size check according to the AFBC decoder limitation
and special Line size limitation(2046) for format: YUV420_10BIT and X0L2.

Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190924080022.19250-3-lowry.li@arm.com
This commit is contained in:
Lowry Li (Arm Technology China) 2019-09-24 08:00:49 +00:00 committed by james qian wang (Arm Technology China)
parent 2b2510da43
commit f15886fa7d
1 changed files with 49 additions and 0 deletions
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49
drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
View File

@ -349,7 +349,56 @@ static void d71_layer_dump(struct komeda_component *c, struct seq_file *sf)
seq_printf(sf, "%sAD_V_CROP:\t\t0x%X\n", prefix, v[2]);
}
static int d71_layer_validate(struct komeda_component *c,
struct komeda_component_state *state)
{
struct komeda_layer_state *st = to_layer_st(state);
struct komeda_layer *layer = to_layer(c);
struct drm_plane_state *plane_st;
struct drm_framebuffer *fb;
u32 fourcc, line_sz, max_line_sz;
plane_st = drm_atomic_get_new_plane_state(state->obj.state,
state->plane);
fb = plane_st->fb;
fourcc = fb->format->format;
if (drm_rotation_90_or_270(st->rot))
line_sz = st->vsize - st->afbc_crop_t - st->afbc_crop_b;
else
line_sz = st->hsize - st->afbc_crop_l - st->afbc_crop_r;
if (fb->modifier) {
if ((fb->modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) ==
AFBC_FORMAT_MOD_BLOCK_SIZE_32x8)
max_line_sz = layer->line_sz;
else
max_line_sz = layer->line_sz / 2;
if (line_sz > max_line_sz) {
DRM_DEBUG_ATOMIC("afbc request line_sz: %d exceed the max afbc line_sz: %d.\n",
line_sz, max_line_sz);
return -EINVAL;
}
}
if (fourcc == DRM_FORMAT_YUV420_10BIT && line_sz > 2046 && (st->afbc_crop_l % 4)) {
DRM_DEBUG_ATOMIC("YUV420_10BIT input_hsize: %d exceed the max size 2046.\n",
line_sz);
return -EINVAL;
}
if (fourcc == DRM_FORMAT_X0L2 && line_sz > 2046 && (st->addr[0] % 16)) {
DRM_DEBUG_ATOMIC("X0L2 input_hsize: %d exceed the max size 2046.\n",
line_sz);
return -EINVAL;
}
return 0;
}
static const struct komeda_component_funcs d71_layer_funcs = {
.validate = d71_layer_validate,
.update = d71_layer_update,
.disable = d71_layer_disable,
.dump_register = d71_layer_dump,