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7#include "komeda_dev.h"
8#include "komeda_kms.h"
9
10static int
11komeda_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)
15{
16 struct drm_framebuffer *fb = conn_st->writeback_job->fb;
17
18 memset(dflow, 0, sizeof(*dflow));
19
20 dflow->out_w = fb->width;
21 dflow->out_h = fb->height;
22
23
24 pipeline_composition_size(kcrtc_st, &dflow->in_w, &dflow->in_h);
25 dflow->input.component = &wb_layer->base.pipeline->compiz->base;
26
27 dflow->pixel_blend_mode = DRM_MODE_BLEND_PIXEL_NONE;
28 dflow->rot = DRM_MODE_ROTATE_0;
29
30 komeda_complete_data_flow_cfg(wb_layer, dflow, fb);
31
32 return 0;
33}
34
35static int
36komeda_wb_encoder_atomic_check(struct drm_encoder *encoder,
37 struct drm_crtc_state *crtc_st,
38 struct drm_connector_state *conn_st)
39{
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;
44 int err;
45
46 if (!writeback_job)
47 return 0;
48
49 if (!crtc_st->active) {
50 DRM_DEBUG_ATOMIC("Cannot write the composition result out on a inactive CRTC.\n");
51 return -EINVAL;
52 }
53
54 wb_layer = to_kconn(to_wb_conn(conn_st->connector))->wb_layer;
55
56
57
58
59
60 if (crtc_st->connectors_changed &&
61 is_only_changed_connector(crtc_st, conn_st->connector))
62 crtc_st->connectors_changed = false;
63
64 err = komeda_wb_init_data_flow(wb_layer, conn_st, kcrtc_st, &dflow);
65 if (err)
66 return err;
67
68 if (dflow.en_split)
69 err = komeda_build_wb_split_data_flow(wb_layer,
70 conn_st, kcrtc_st, &dflow);
71 else
72 err = komeda_build_wb_data_flow(wb_layer,
73 conn_st, kcrtc_st, &dflow);
74
75 return err;
76}
77
78static const struct drm_encoder_helper_funcs komeda_wb_encoder_helper_funcs = {
79 .atomic_check = komeda_wb_encoder_atomic_check,
80};
81
82static int
83komeda_wb_connector_get_modes(struct drm_connector *connector)
84{
85 return 0;
86}
87
88static enum drm_mode_status
89komeda_wb_connector_mode_valid(struct drm_connector *connector,
90 struct drm_display_mode *mode)
91{
92 struct drm_device *dev = connector->dev;
93 struct drm_mode_config *mode_config = &dev->mode_config;
94 int w = mode->hdisplay, h = mode->vdisplay;
95
96 if ((w < mode_config->min_width) || (w > mode_config->max_width))
97 return MODE_BAD_HVALUE;
98
99 if ((h < mode_config->min_height) || (h > mode_config->max_height))
100 return MODE_BAD_VVALUE;
101
102 return MODE_OK;
103}
104
105static const struct drm_connector_helper_funcs komeda_wb_conn_helper_funcs = {
106 .get_modes = komeda_wb_connector_get_modes,
107 .mode_valid = komeda_wb_connector_mode_valid,
108};
109
110static enum drm_connector_status
111komeda_wb_connector_detect(struct drm_connector *connector, bool force)
112{
113 return connector_status_connected;
114}
115
116static int
117komeda_wb_connector_fill_modes(struct drm_connector *connector,
118 uint32_t maxX, uint32_t maxY)
119{
120 return 0;
121}
122
123static void komeda_wb_connector_destroy(struct drm_connector *connector)
124{
125 drm_connector_cleanup(connector);
126 kfree(to_kconn(to_wb_conn(connector)));
127}
128
129static const struct drm_connector_funcs komeda_wb_connector_funcs = {
130 .reset = drm_atomic_helper_connector_reset,
131 .detect = komeda_wb_connector_detect,
132 .fill_modes = komeda_wb_connector_fill_modes,
133 .destroy = komeda_wb_connector_destroy,
134 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
135 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
136};
137
138static int komeda_wb_connector_add(struct komeda_kms_dev *kms,
139 struct komeda_crtc *kcrtc)
140{
141 struct komeda_dev *mdev = kms->base.dev_private;
142 struct komeda_wb_connector *kwb_conn;
143 struct drm_writeback_connector *wb_conn;
144 struct drm_display_info *info;
145 u32 *formats, n_formats = 0;
146 int err;
147
148 if (!kcrtc->master->wb_layer)
149 return 0;
150
151 kwb_conn = kzalloc(sizeof(*kwb_conn), GFP_KERNEL);
152 if (!kwb_conn)
153 return -ENOMEM;
154
155 kwb_conn->wb_layer = kcrtc->master->wb_layer;
156
157 wb_conn = &kwb_conn->base;
158 wb_conn->encoder.possible_crtcs = BIT(drm_crtc_index(&kcrtc->base));
159
160 formats = komeda_get_layer_fourcc_list(&mdev->fmt_tbl,
161 kwb_conn->wb_layer->layer_type,
162 &n_formats);
163
164 err = drm_writeback_connector_init(&kms->base, wb_conn,
165 &komeda_wb_connector_funcs,
166 &komeda_wb_encoder_helper_funcs,
167 formats, n_formats);
168 komeda_put_fourcc_list(formats);
169 if (err) {
170 kfree(kwb_conn);
171 return err;
172 }
173
174 drm_connector_helper_add(&wb_conn->base, &komeda_wb_conn_helper_funcs);
175
176 info = &kwb_conn->base.base.display_info;
177 info->bpc = __fls(kcrtc->master->improc->supported_color_depths);
178 info->color_formats = kcrtc->master->improc->supported_color_formats;
179
180 kcrtc->wb_conn = kwb_conn;
181
182 return 0;
183}
184
185int komeda_kms_add_wb_connectors(struct komeda_kms_dev *kms,
186 struct komeda_dev *mdev)
187{
188 int i, err;
189
190 for (i = 0; i < kms->n_crtcs; i++) {
191 err = komeda_wb_connector_add(kms, &kms->crtcs[i]);
192 if (err)
193 return err;
194 }
195
196 return 0;
197}
198
