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Fri, 30 Aug 2019 09:09:02 +0000 From: "Lowry Li (Arm Technology China)" To: Liviu Dudau , "james qian wang (Arm Technology China)" , "maarten.lankhorst@linux.intel.com" , "seanpaul@chromium.org" , "airlied@linux.ie" , Brian Starkey , Mihail Atanassov CC: "Julien Yin (Arm Technology China)" , "Jonathan Chai (Arm Technology China)" , Ayan Halder , "dri-devel@lists.freedesktop.org" , "linux-kernel@vger.kernel.org" , nd Subject: [PATCH v1 2/2] drm/komeda: Adds layer horizontal input size limitation check for D71 Thread-Topic: [PATCH v1 2/2] drm/komeda: Adds layer horizontal input size limitation check for D71 Thread-Index: AQHVXxKQ/pMPgbpj00WfLBjX5GisAQ== Date: Fri, 30 Aug 2019 09:09:02 +0000 Message-ID: <20190830090835.8747-3-lowry.li@arm.com> References: <20190830090835.8747-1-lowry.li@arm.com> In-Reply-To: <20190830090835.8747-1-lowry.li@arm.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [113.29.88.7] x-clientproxiedby: HK0P153CA0026.APCP153.PROD.OUTLOOK.COM (2603:1096:203:17::14) To VI1PR08MB5488.eurprd08.prod.outlook.com (2603:10a6:803:137::22) Authentication-Results-Original: spf=none (sender IP is ) smtp.mailfrom=Lowry.Li@arm.com; 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Signed-off-by: Lowry Li (Arm Technology China) --- .../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/drive= rs/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]); } =20 +static int d71_layer_validate(struct komeda_component *c, + struct komeda_component_state *state) +{ + struct komeda_layer_state *st =3D to_layer_st(state); + struct komeda_layer *layer =3D to_layer(c); + struct drm_plane_state *plane_st; + struct drm_framebuffer *fb; + u32 fourcc, line_sz, max_line_sz; + + plane_st =3D drm_atomic_get_new_plane_state(state->obj.state, + state->plane); + fb =3D plane_st->fb; + fourcc =3D fb->format->format; + + if (drm_rotation_90_or_270(st->rot)) + line_sz =3D st->vsize - st->afbc_crop_t - st->afbc_crop_b; + else + line_sz =3D st->hsize - st->afbc_crop_l - st->afbc_crop_r; + + if (fb->modifier) { + if ((fb->modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) =3D=3D + AFBC_FORMAT_MOD_BLOCK_SIZE_32x8) + max_line_sz =3D layer->line_sz; + else + max_line_sz =3D 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 =3D=3D 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 =3D=3D 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 =3D { + .validate =3D d71_layer_validate, .update =3D d71_layer_update, .disable =3D d71_layer_disable, .dump_register =3D d71_layer_dump, --=20 2.17.1