1 // SPDX-License-Identifier: GPL-2.0
3 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
4 * Author: James.Qian.Wang <james.qian.wang@arm.com>
7 #include "komeda_dev.h"
8 #include "komeda_kms.h"
11 komeda_wb_init_data_flow(struct komeda_layer *wb_layer,
12 struct drm_connector_state *conn_st,
13 struct komeda_crtc_state *kcrtc_st,
14 struct komeda_data_flow_cfg *dflow)
16 struct drm_framebuffer *fb = conn_st->writeback_job->fb;
18 memset(dflow, 0, sizeof(*dflow));
20 dflow->out_w = fb->width;
21 dflow->out_h = fb->height;
23 /* the write back data comes from the compiz */
24 pipeline_composition_size(kcrtc_st, &dflow->in_w, &dflow->in_h);
25 dflow->input.component = &wb_layer->base.pipeline->compiz->base;
26 /* compiz doesn't output alpha */
27 dflow->pixel_blend_mode = DRM_MODE_BLEND_PIXEL_NONE;
28 dflow->rot = DRM_MODE_ROTATE_0;
30 komeda_complete_data_flow_cfg(wb_layer, dflow, fb);
36 komeda_wb_encoder_atomic_check(struct drm_encoder *encoder,
37 struct drm_crtc_state *crtc_st,
38 struct drm_connector_state *conn_st)
40 struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(crtc_st);
41 struct drm_writeback_job *writeback_job = conn_st->writeback_job;
42 struct komeda_layer *wb_layer;
43 struct komeda_data_flow_cfg dflow;
46 if (!writeback_job || !writeback_job->fb) {
50 if (!crtc_st->active) {
51 DRM_DEBUG_ATOMIC("Cannot write the composition result out on a inactive CRTC.\n");
55 wb_layer = to_kconn(to_wb_conn(conn_st->connector))->wb_layer;
58 * No need for a full modested when the only connector changed is the
59 * writeback connector.
61 if (crtc_st->connectors_changed &&
62 is_only_changed_connector(crtc_st, conn_st->connector))
63 crtc_st->connectors_changed = false;
65 err = komeda_wb_init_data_flow(wb_layer, conn_st, kcrtc_st, &dflow);
70 err = komeda_build_wb_split_data_flow(wb_layer,
71 conn_st, kcrtc_st, &dflow);
73 err = komeda_build_wb_data_flow(wb_layer,
74 conn_st, kcrtc_st, &dflow);
79 static const struct drm_encoder_helper_funcs komeda_wb_encoder_helper_funcs = {
80 .atomic_check = komeda_wb_encoder_atomic_check,
84 komeda_wb_connector_get_modes(struct drm_connector *connector)
89 static enum drm_mode_status
90 komeda_wb_connector_mode_valid(struct drm_connector *connector,
91 struct drm_display_mode *mode)
93 struct drm_device *dev = connector->dev;
94 struct drm_mode_config *mode_config = &dev->mode_config;
95 int w = mode->hdisplay, h = mode->vdisplay;
97 if ((w < mode_config->min_width) || (w > mode_config->max_width))
98 return MODE_BAD_HVALUE;
100 if ((h < mode_config->min_height) || (h > mode_config->max_height))
101 return MODE_BAD_VVALUE;
106 static const struct drm_connector_helper_funcs komeda_wb_conn_helper_funcs = {
107 .get_modes = komeda_wb_connector_get_modes,
108 .mode_valid = komeda_wb_connector_mode_valid,
111 static enum drm_connector_status
112 komeda_wb_connector_detect(struct drm_connector *connector, bool force)
114 return connector_status_connected;
118 komeda_wb_connector_fill_modes(struct drm_connector *connector,
119 uint32_t maxX, uint32_t maxY)
124 static void komeda_wb_connector_destroy(struct drm_connector *connector)
126 drm_connector_cleanup(connector);
127 kfree(to_kconn(to_wb_conn(connector)));
130 static const struct drm_connector_funcs komeda_wb_connector_funcs = {
131 .reset = drm_atomic_helper_connector_reset,
132 .detect = komeda_wb_connector_detect,
133 .fill_modes = komeda_wb_connector_fill_modes,
134 .destroy = komeda_wb_connector_destroy,
135 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
136 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
139 static int komeda_wb_connector_add(struct komeda_kms_dev *kms,
140 struct komeda_crtc *kcrtc)
142 struct komeda_dev *mdev = kms->base.dev_private;
143 struct komeda_wb_connector *kwb_conn;
144 struct drm_writeback_connector *wb_conn;
145 u32 *formats, n_formats = 0;
148 if (!kcrtc->master->wb_layer)
151 kwb_conn = kzalloc(sizeof(*wb_conn), GFP_KERNEL);
155 kwb_conn->wb_layer = kcrtc->master->wb_layer;
157 wb_conn = &kwb_conn->base;
158 wb_conn->encoder.possible_crtcs = BIT(drm_crtc_index(&kcrtc->base));
160 formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl,
161 kwb_conn->wb_layer->layer_type,
164 err = drm_writeback_connector_init(&kms->base, wb_conn,
165 &komeda_wb_connector_funcs,
166 &komeda_wb_encoder_helper_funcs,
168 komeda_put_fourcc_list(formats);
172 drm_connector_helper_add(&wb_conn->base, &komeda_wb_conn_helper_funcs);
174 kcrtc->wb_conn = kwb_conn;
179 int komeda_kms_add_wb_connectors(struct komeda_kms_dev *kms,
180 struct komeda_dev *mdev)
184 for (i = 0; i < kms->n_crtcs; i++) {
185 err = komeda_wb_connector_add(kms, &kms->crtcs[i]);