lkml.org 
[lkml]   [2019]   [Aug]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v1 2/2] drm/komeda: Adds layer horizontal input size limitation check for D71
Date
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>
---
.../arm/display/komeda/d71/d71_component.c | 49 +++++++++++++++++++
1 file changed, 49 insertions(+)

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 a56dc56a72fb..41b5bfcbd027 100644
--- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
@@ -401,7 +401,56 @@ 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,
--
2.17.1
\
 
 \ /
  Last update: 2019-08-30 11:09    [W:0.052 / U:6.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site