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Tue, 22 Jan 2019 11:06:22 +0000 From: "james qian wang (Arm Technology China)" To: Liviu Dudau , "airlied@linux.ie" , Brian Starkey , "maarten.lankhorst@linux.intel.com" , "sean@poorly.run" CC: "Jonathan Chai (Arm Technology China)" , "Julien Yin (Arm Technology China)" , "thomas Sun (Arm Technology China)" , "Lowry Li (Arm Technology China)" , Ayan Halder , "Tiannan Zhu (Arm Technology China)" , "Jin Gao (Arm Technology China)" , "Yiqi Kang (Arm Technology China)" , nd , "malidp@foss.arm.com" , "linux-kernel@vger.kernel.org" , "dri-devel@lists.freedesktop.org" , "james qian wang (Arm Technology China)" Subject: [PATCH v2 5/5] drm/komeda: Add komeda_plane/plane_helper_funcs Thread-Topic: [PATCH v2 5/5] drm/komeda: Add komeda_plane/plane_helper_funcs Thread-Index: AQHUskKCF0KwCqI+2kmiQGQ+rCgcTg== Date: Tue, 22 Jan 2019 11:06:22 +0000 Message-ID: <20190122110431.5025-6-james.qian.wang@arm.com> References: <20190122110431.5025-1-james.qian.wang@arm.com> In-Reply-To: <20190122110431.5025-1-james.qian.wang@arm.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [113.29.88.7] x-clientproxiedby: SYAPR01CA0021.ausprd01.prod.outlook.com (2603:10c6:1::33) To DB6PR0801MB1990.eurprd08.prod.outlook.com (2603:10a6:4:6c::21) authentication-results: spf=none (sender IP is ) smtp.mailfrom=james.qian.wang@arm.com; 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-Network-Message-Id: aaeb320f-ff82-48b5-8979-08d68059a467 X-MS-Exchange-CrossTenant-originalarrivaltime: 22 Jan 2019 11:06:12.6946 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0801MB1989 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "james qian wang (Arm Technology China)" Per komeda design KMS-plane maps to komeda layer input pipeline. komeda_plane_atomic_check is for building a komeda layer input pipeline. And KMS-plane is only a user of komeda resources. so there is no real HW update for plane, but all HW update will be handled in crtc->flush. v2: Rebase Signed-off-by: James Qian Wang (Arm Technology China) --- .../gpu/drm/arm/display/komeda/komeda_plane.c | 128 ++++++++++++++++++ 1 file changed, 128 insertions(+) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gp= u/drm/arm/display/komeda/komeda_plane.c index 0a4953a9a909..af51f0cc9c16 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c @@ -10,7 +10,82 @@ #include "komeda_dev.h" #include "komeda_kms.h" =20 +static int +komeda_plane_init_data_flow(struct drm_plane_state *st, + struct komeda_data_flow_cfg *dflow) +{ + struct drm_framebuffer *fb =3D st->fb; + + memset(dflow, 0, sizeof(*dflow)); + + dflow->blending_zorder =3D st->zpos; + + /* if format doesn't have alpha, fix blend mode to PIXEL_NONE */ + dflow->pixel_blend_mode =3D fb->format->has_alpha ? + st->pixel_blend_mode : DRM_MODE_BLEND_PIXEL_NONE; + dflow->layer_alpha =3D st->alpha >> 8; + + dflow->out_x =3D st->crtc_x; + dflow->out_y =3D st->crtc_y; + dflow->out_w =3D st->crtc_w; + dflow->out_h =3D st->crtc_h; + + dflow->in_x =3D st->src_x >> 16; + dflow->in_y =3D st->src_y >> 16; + dflow->in_w =3D st->src_w >> 16; + dflow->in_h =3D st->src_h >> 16; + + return 0; +} + +int komeda_plane_atomic_check(struct drm_plane *plane, + struct drm_plane_state *state) +{ + struct komeda_plane *kplane =3D to_kplane(plane); + struct komeda_plane_state *kplane_st =3D to_kplane_st(state); + struct komeda_layer *layer =3D kplane->layer; + struct drm_crtc_state *crtc_st; + struct komeda_crtc *kcrtc; + struct komeda_crtc_state *kcrtc_st; + struct komeda_data_flow_cfg dflow; + int err; + + if (!state->crtc || !state->fb) + return 0; + + crtc_st =3D drm_atomic_get_crtc_state(state->state, state->crtc); + if (!crtc_st->enable) { + DRM_DEBUG_ATOMIC("Cannot update plane on a disabled CRTC.\n"); + return -EINVAL; + } + + /* crtc is inactive, skip the resource assignment */ + if (!crtc_st->active) + return 0; + + kcrtc =3D to_kcrtc(state->crtc); + kcrtc_st =3D to_kcrtc_st(crtc_st); + + err =3D komeda_plane_init_data_flow(state, &dflow); + if (err) + return err; + + err =3D komeda_build_layer_data_flow(layer, kplane_st, kcrtc_st, &dflow); + + return err; +} + +/* plane doesn't represent a real HW, so there is no HW update for plane. + * komeda handles all the HW update in crtc->atomic_flush + */ +void komeda_plane_atomic_update(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ +} + static const struct drm_plane_helper_funcs komeda_plane_helper_funcs =3D { + .atomic_check =3D komeda_plane_atomic_check, + .atomic_update =3D komeda_plane_atomic_update, }; =20 static void komeda_plane_destroy(struct drm_plane *plane) @@ -20,7 +95,60 @@ static void komeda_plane_destroy(struct drm_plane *plane= ) kfree(to_kplane(plane)); } =20 +static void komeda_plane_reset(struct drm_plane *plane) +{ + struct komeda_plane_state *state; + struct komeda_plane *kplane =3D to_kplane(plane); + + if (plane->state) + __drm_atomic_helper_plane_destroy_state(plane->state); + + kfree(plane->state); + plane->state =3D NULL; + + state =3D kzalloc(sizeof(*state), GFP_KERNEL); + if (state) { + state->base.rotation =3D DRM_MODE_ROTATE_0; + state->base.pixel_blend_mode =3D DRM_MODE_BLEND_PREMULTI; + state->base.alpha =3D DRM_BLEND_ALPHA_OPAQUE; + state->base.zpos =3D kplane->layer->base.id; + plane->state =3D &state->base; + plane->state->plane =3D plane; + } +} + +static struct drm_plane_state * +komeda_plane_atomic_duplicate_state(struct drm_plane *plane) +{ + struct komeda_plane_state *new; + + if (WARN_ON(!plane->state)) + return NULL; + + new =3D kzalloc(sizeof(*new), GFP_KERNEL); + if (!new) + return NULL; + + __drm_atomic_helper_plane_duplicate_state(plane, &new->base); + + return &new->base; +} + +static void +komeda_plane_atomic_destroy_state(struct drm_plane *plane, + struct drm_plane_state *state) +{ + __drm_atomic_helper_plane_destroy_state(state); + kfree(to_kplane_st(state)); +} + static const struct drm_plane_funcs komeda_plane_funcs =3D { + .update_plane =3D drm_atomic_helper_update_plane, + .disable_plane =3D drm_atomic_helper_disable_plane, + .destroy =3D komeda_plane_destroy, + .reset =3D komeda_plane_reset, + .atomic_duplicate_state =3D komeda_plane_atomic_duplicate_state, + .atomic_destroy_state =3D komeda_plane_atomic_destroy_state, }; =20 /* for komeda, which is pipeline can be share between crtcs */ --=20 2.17.1