1 /*
2  * Copyright (C) 2008 Maarten Maathuis.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial
15  * portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  *
25  */
26 
27 #ifndef __NOUVEAU_CONNECTOR_H__
28 #define __NOUVEAU_CONNECTOR_H__
29 
30 #include <nvif/notify.h>
31 
32 #include <drm/drm_crtc.h>
33 #include <drm/drm_edid.h>
34 #include <drm/drm_encoder.h>
35 #include <drm/drm_dp_helper.h>
36 #include <drm/drm_util.h>
37 
38 #include "nouveau_crtc.h"
39 #include "nouveau_encoder.h"
40 
41 struct nvkm_i2c_port;
42 struct dcb_output;
43 
44 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
45 struct nouveau_backlight;
46 #endif
47 
48 #define nouveau_conn_atom(p)                                                   \
49 	container_of((p), struct nouveau_conn_atom, state)
50 
51 struct nouveau_conn_atom {
52 	struct drm_connector_state state;
53 
54 	struct {
55 		/* The enum values specifically defined here match nv50/gf119
56 		 * hw values, and the code relies on this.
57 		 */
58 		enum {
59 			DITHERING_MODE_OFF = 0x00,
60 			DITHERING_MODE_ON = 0x01,
61 			DITHERING_MODE_DYNAMIC2X2 = 0x10 | DITHERING_MODE_ON,
62 			DITHERING_MODE_STATIC2X2 = 0x18 | DITHERING_MODE_ON,
63 			DITHERING_MODE_TEMPORAL = 0x20 | DITHERING_MODE_ON,
64 			DITHERING_MODE_AUTO
65 		} mode;
66 		enum {
67 			DITHERING_DEPTH_6BPC = 0x00,
68 			DITHERING_DEPTH_8BPC = 0x02,
69 			DITHERING_DEPTH_AUTO
70 		} depth;
71 	} dither;
72 
73 	struct {
74 		int mode;	/* DRM_MODE_SCALE_* */
75 		struct {
76 			enum {
77 				UNDERSCAN_OFF,
78 				UNDERSCAN_ON,
79 				UNDERSCAN_AUTO,
80 			} mode;
81 			u32 hborder;
82 			u32 vborder;
83 		} underscan;
84 		bool full;
85 	} scaler;
86 
87 	struct {
88 		int color_vibrance;
89 		int vibrant_hue;
90 	} procamp;
91 
92 	union {
93 		struct {
94 			bool dither:1;
95 			bool scaler:1;
96 			bool procamp:1;
97 		};
98 		u8 mask;
99 	} set;
100 };
101 
102 struct nouveau_connector {
103 	struct drm_connector base;
104 	enum dcb_connector_type type;
105 	u8 index;
106 	u8 *dcb;
107 
108 	struct nvif_notify hpd;
109 
110 	struct drm_dp_aux aux;
111 
112 	int dithering_mode;
113 	int scaling_mode;
114 
115 	struct nouveau_encoder *detected_encoder;
116 	struct edid *edid;
117 	struct drm_display_mode *native_mode;
118 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
119 	struct nouveau_backlight *backlight;
120 #endif
121 	/*
122 	 * Our connector property code expects a nouveau_conn_atom struct
123 	 * even on pre-nv50 where we do not support atomic. This embedded
124 	 * version gets used in the non atomic modeset case.
125 	 */
126 	struct nouveau_conn_atom properties_state;
127 };
128 
129 static inline struct nouveau_connector *nouveau_connector(
130 						struct drm_connector *con)
131 {
132 	return container_of(con, struct nouveau_connector, base);
133 }
134 
135 static inline bool
136 nouveau_connector_is_mst(struct drm_connector *connector)
137 {
138 	const struct nouveau_encoder *nv_encoder;
139 	const struct drm_encoder *encoder;
140 
141 	if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
142 		return false;
143 
144 	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANY);
145 	if (!nv_encoder)
146 		return false;
147 
148 	encoder = &nv_encoder->base.base;
149 	return encoder->encoder_type == DRM_MODE_ENCODER_DPMST;
150 }
151 
152 #define nouveau_for_each_non_mst_connector_iter(connector, iter) \
153 	drm_for_each_connector_iter(connector, iter) \
154 		for_each_if(!nouveau_connector_is_mst(connector))
155 
156 static inline struct nouveau_connector *
157 nouveau_crtc_connector_get(struct nouveau_crtc *nv_crtc)
158 {
159 	struct drm_device *dev = nv_crtc->base.dev;
160 	struct drm_connector *connector;
161 	struct drm_connector_list_iter conn_iter;
162 	struct nouveau_connector *nv_connector = NULL;
163 	struct drm_crtc *crtc = to_drm_crtc(nv_crtc);
164 
165 	drm_connector_list_iter_begin(dev, &conn_iter);
166 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
167 		if (connector->encoder && connector->encoder->crtc == crtc) {
168 			nv_connector = nouveau_connector(connector);
169 			break;
170 		}
171 	}
172 	drm_connector_list_iter_end(&conn_iter);
173 
174 	return nv_connector;
175 }
176 
177 struct drm_connector *
178 nouveau_connector_create(struct drm_device *, const struct dcb_output *);
179 
180 extern int nouveau_tv_disable;
181 extern int nouveau_ignorelid;
182 extern int nouveau_duallink;
183 extern int nouveau_hdmimhz;
184 
185 void nouveau_conn_attach_properties(struct drm_connector *);
186 void nouveau_conn_reset(struct drm_connector *);
187 struct drm_connector_state *
188 nouveau_conn_atomic_duplicate_state(struct drm_connector *);
189 void nouveau_conn_atomic_destroy_state(struct drm_connector *,
190 				       struct drm_connector_state *);
191 int nouveau_conn_atomic_set_property(struct drm_connector *,
192 				     struct drm_connector_state *,
193 				     struct drm_property *, u64);
194 int nouveau_conn_atomic_get_property(struct drm_connector *,
195 				     const struct drm_connector_state *,
196 				     struct drm_property *, u64 *);
197 struct drm_display_mode *nouveau_conn_native_mode(struct drm_connector *);
198 
199 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
200 extern int nouveau_backlight_init(struct drm_connector *);
201 extern void nouveau_backlight_fini(struct drm_connector *);
202 extern void nouveau_backlight_ctor(void);
203 extern void nouveau_backlight_dtor(void);
204 #else
205 static inline int
206 nouveau_backlight_init(struct drm_connector *connector)
207 {
208 	return 0;
209 }
210 
211 static inline void
212 nouveau_backlight_fini(struct drm_connector *connector) {
213 }
214 
215 static inline void
216 nouveau_backlight_ctor(void) {
217 }
218 
219 static inline void
220 nouveau_backlight_dtor(void) {
221 }
222 #endif
223 
224 #endif /* __NOUVEAU_CONNECTOR_H__ */
225