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 <nvhw/class/cl507d.h>
33 #include <nvhw/class/cl907d.h>
34 #include <nvhw/drf.h>
35 
36 #include <drm/drm_crtc.h>
37 #include <drm/drm_edid.h>
38 #include <drm/drm_encoder.h>
39 #include <drm/drm_dp_helper.h>
40 #include <drm/drm_util.h>
41 
42 #include "nouveau_crtc.h"
43 #include "nouveau_encoder.h"
44 
45 struct nvkm_i2c_port;
46 struct dcb_output;
47 
48 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
49 struct nouveau_backlight;
50 #endif
51 
52 #define nouveau_conn_atom(p)                                                   \
53 	container_of((p), struct nouveau_conn_atom, state)
54 
55 struct nouveau_conn_atom {
56 	struct drm_connector_state state;
57 
58 	struct {
59 		/* The enum values specifically defined here match nv50/gf119
60 		 * hw values, and the code relies on this.
61 		 */
62 		enum {
63 			DITHERING_MODE_OFF =
64 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, ENABLE, DISABLE),
65 			DITHERING_MODE_ON =
66 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, ENABLE, ENABLE),
67 			DITHERING_MODE_DYNAMIC2X2 = DITHERING_MODE_ON |
68 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, MODE, DYNAMIC_2X2),
69 			DITHERING_MODE_STATIC2X2 = DITHERING_MODE_ON |
70 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, MODE, STATIC_2X2),
71 			DITHERING_MODE_TEMPORAL = DITHERING_MODE_ON |
72 				NVDEF(NV907D, HEAD_SET_DITHER_CONTROL, MODE, TEMPORAL),
73 			DITHERING_MODE_AUTO
74 		} mode;
75 		enum {
76 			DITHERING_DEPTH_6BPC =
77 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, BITS, DITHER_TO_6_BITS),
78 			DITHERING_DEPTH_8BPC =
79 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, BITS, DITHER_TO_8_BITS),
80 			DITHERING_DEPTH_AUTO
81 		} depth;
82 	} dither;
83 
84 	struct {
85 		int mode;	/* DRM_MODE_SCALE_* */
86 		struct {
87 			enum {
88 				UNDERSCAN_OFF,
89 				UNDERSCAN_ON,
90 				UNDERSCAN_AUTO,
91 			} mode;
92 			u32 hborder;
93 			u32 vborder;
94 		} underscan;
95 		bool full;
96 	} scaler;
97 
98 	struct {
99 		int color_vibrance;
100 		int vibrant_hue;
101 	} procamp;
102 
103 	union {
104 		struct {
105 			bool dither:1;
106 			bool scaler:1;
107 			bool procamp:1;
108 		};
109 		u8 mask;
110 	} set;
111 };
112 
113 struct nouveau_connector {
114 	struct drm_connector base;
115 	enum dcb_connector_type type;
116 	u8 index;
117 	u8 *dcb;
118 
119 	struct nvif_notify hpd;
120 
121 	struct drm_dp_aux aux;
122 
123 	int dithering_mode;
124 	int scaling_mode;
125 
126 	struct nouveau_encoder *detected_encoder;
127 	struct edid *edid;
128 	struct drm_display_mode *native_mode;
129 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
130 	struct nouveau_backlight *backlight;
131 #endif
132 	/*
133 	 * Our connector property code expects a nouveau_conn_atom struct
134 	 * even on pre-nv50 where we do not support atomic. This embedded
135 	 * version gets used in the non atomic modeset case.
136 	 */
137 	struct nouveau_conn_atom properties_state;
138 };
139 
140 static inline struct nouveau_connector *nouveau_connector(
141 						struct drm_connector *con)
142 {
143 	return container_of(con, struct nouveau_connector, base);
144 }
145 
146 static inline bool
147 nouveau_connector_is_mst(struct drm_connector *connector)
148 {
149 	const struct nouveau_encoder *nv_encoder;
150 	const struct drm_encoder *encoder;
151 
152 	if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
153 		return false;
154 
155 	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANY);
156 	if (!nv_encoder)
157 		return false;
158 
159 	encoder = &nv_encoder->base.base;
160 	return encoder->encoder_type == DRM_MODE_ENCODER_DPMST;
161 }
162 
163 #define nouveau_for_each_non_mst_connector_iter(connector, iter) \
164 	drm_for_each_connector_iter(connector, iter) \
165 		for_each_if(!nouveau_connector_is_mst(connector))
166 
167 static inline struct nouveau_connector *
168 nouveau_crtc_connector_get(struct nouveau_crtc *nv_crtc)
169 {
170 	struct drm_device *dev = nv_crtc->base.dev;
171 	struct drm_connector *connector;
172 	struct drm_connector_list_iter conn_iter;
173 	struct nouveau_connector *nv_connector = NULL;
174 	struct drm_crtc *crtc = to_drm_crtc(nv_crtc);
175 
176 	drm_connector_list_iter_begin(dev, &conn_iter);
177 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
178 		if (connector->encoder && connector->encoder->crtc == crtc) {
179 			nv_connector = nouveau_connector(connector);
180 			break;
181 		}
182 	}
183 	drm_connector_list_iter_end(&conn_iter);
184 
185 	return nv_connector;
186 }
187 
188 struct drm_connector *
189 nouveau_connector_create(struct drm_device *, const struct dcb_output *);
190 
191 extern int nouveau_tv_disable;
192 extern int nouveau_ignorelid;
193 extern int nouveau_duallink;
194 extern int nouveau_hdmimhz;
195 
196 void nouveau_conn_attach_properties(struct drm_connector *);
197 void nouveau_conn_reset(struct drm_connector *);
198 struct drm_connector_state *
199 nouveau_conn_atomic_duplicate_state(struct drm_connector *);
200 void nouveau_conn_atomic_destroy_state(struct drm_connector *,
201 				       struct drm_connector_state *);
202 int nouveau_conn_atomic_set_property(struct drm_connector *,
203 				     struct drm_connector_state *,
204 				     struct drm_property *, u64);
205 int nouveau_conn_atomic_get_property(struct drm_connector *,
206 				     const struct drm_connector_state *,
207 				     struct drm_property *, u64 *);
208 struct drm_display_mode *nouveau_conn_native_mode(struct drm_connector *);
209 enum drm_mode_status
210 nouveau_conn_mode_clock_valid(const struct drm_display_mode *,
211 			      const unsigned min_clock,
212 			      const unsigned max_clock,
213 			      unsigned *clock);
214 
215 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
216 extern int nouveau_backlight_init(struct drm_connector *);
217 extern void nouveau_backlight_fini(struct drm_connector *);
218 extern void nouveau_backlight_ctor(void);
219 extern void nouveau_backlight_dtor(void);
220 #else
221 static inline int
222 nouveau_backlight_init(struct drm_connector *connector)
223 {
224 	return 0;
225 }
226 
227 static inline void
228 nouveau_backlight_fini(struct drm_connector *connector) {
229 }
230 
231 static inline void
232 nouveau_backlight_ctor(void) {
233 }
234 
235 static inline void
236 nouveau_backlight_dtor(void) {
237 }
238 #endif
239 
240 #endif /* __NOUVEAU_CONNECTOR_H__ */
241