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 #include <nvif/conn.h>
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/display/drm_dp_helper.h>
37 #include <drm/drm_crtc.h>
38 #include <drm/drm_edid.h>
39 #include <drm/drm_encoder.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 	struct backlight_device *dev;
51 
52 	struct drm_edp_backlight_info edp_info;
53 	bool uses_dpcd : 1;
54 
55 	int id;
56 };
57 #endif
58 
59 #define nouveau_conn_atom(p)                                                   \
60 	container_of((p), struct nouveau_conn_atom, state)
61 
62 struct nouveau_conn_atom {
63 	struct drm_connector_state state;
64 
65 	struct {
66 		/* The enum values specifically defined here match nv50/gf119
67 		 * hw values, and the code relies on this.
68 		 */
69 		enum {
70 			DITHERING_MODE_OFF =
71 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, ENABLE, DISABLE),
72 			DITHERING_MODE_ON =
73 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, ENABLE, ENABLE),
74 			DITHERING_MODE_DYNAMIC2X2 = DITHERING_MODE_ON |
75 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, MODE, DYNAMIC_2X2),
76 			DITHERING_MODE_STATIC2X2 = DITHERING_MODE_ON |
77 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, MODE, STATIC_2X2),
78 			DITHERING_MODE_TEMPORAL = DITHERING_MODE_ON |
79 				NVDEF(NV907D, HEAD_SET_DITHER_CONTROL, MODE, TEMPORAL),
80 			DITHERING_MODE_AUTO
81 		} mode;
82 		enum {
83 			DITHERING_DEPTH_6BPC =
84 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, BITS, DITHER_TO_6_BITS),
85 			DITHERING_DEPTH_8BPC =
86 				NVDEF(NV507D, HEAD_SET_DITHER_CONTROL, BITS, DITHER_TO_8_BITS),
87 			DITHERING_DEPTH_AUTO
88 		} depth;
89 	} dither;
90 
91 	struct {
92 		int mode;	/* DRM_MODE_SCALE_* */
93 		struct {
94 			enum {
95 				UNDERSCAN_OFF,
96 				UNDERSCAN_ON,
97 				UNDERSCAN_AUTO,
98 			} mode;
99 			u32 hborder;
100 			u32 vborder;
101 		} underscan;
102 		bool full;
103 	} scaler;
104 
105 	struct {
106 		int color_vibrance;
107 		int vibrant_hue;
108 	} procamp;
109 
110 	union {
111 		struct {
112 			bool dither:1;
113 			bool scaler:1;
114 			bool procamp:1;
115 		};
116 		u8 mask;
117 	} set;
118 };
119 
120 struct nouveau_connector {
121 	struct drm_connector base;
122 	enum dcb_connector_type type;
123 	u8 index;
124 	u8 *dcb;
125 
126 	struct nvif_conn conn;
127 	struct nvif_notify hpd;
128 
129 	struct drm_dp_aux aux;
130 
131 	/* The fixed DP encoder for this connector, if there is one */
132 	struct nouveau_encoder *dp_encoder;
133 
134 	int dithering_mode;
135 	int scaling_mode;
136 
137 	struct nouveau_encoder *detected_encoder;
138 	struct edid *edid;
139 	struct drm_display_mode *native_mode;
140 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
141 	struct nouveau_backlight *backlight;
142 #endif
143 	/*
144 	 * Our connector property code expects a nouveau_conn_atom struct
145 	 * even on pre-nv50 where we do not support atomic. This embedded
146 	 * version gets used in the non atomic modeset case.
147 	 */
148 	struct nouveau_conn_atom properties_state;
149 };
150 
151 static inline struct nouveau_connector *nouveau_connector(
152 						struct drm_connector *con)
153 {
154 	return container_of(con, struct nouveau_connector, base);
155 }
156 
157 static inline bool
158 nouveau_connector_is_mst(struct drm_connector *connector)
159 {
160 	const struct nouveau_encoder *nv_encoder;
161 	const struct drm_encoder *encoder;
162 
163 	if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
164 		return false;
165 
166 	nv_encoder = find_encoder(connector, DCB_OUTPUT_ANY);
167 	if (!nv_encoder)
168 		return false;
169 
170 	encoder = &nv_encoder->base.base;
171 	return encoder->encoder_type == DRM_MODE_ENCODER_DPMST;
172 }
173 
174 #define nouveau_for_each_non_mst_connector_iter(connector, iter) \
175 	drm_for_each_connector_iter(connector, iter) \
176 		for_each_if(!nouveau_connector_is_mst(connector))
177 
178 static inline struct nouveau_connector *
179 nouveau_crtc_connector_get(struct nouveau_crtc *nv_crtc)
180 {
181 	struct drm_device *dev = nv_crtc->base.dev;
182 	struct drm_connector *connector;
183 	struct drm_connector_list_iter conn_iter;
184 	struct nouveau_connector *nv_connector = NULL;
185 	struct drm_crtc *crtc = to_drm_crtc(nv_crtc);
186 
187 	drm_connector_list_iter_begin(dev, &conn_iter);
188 	nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) {
189 		if (connector->encoder && connector->encoder->crtc == crtc) {
190 			nv_connector = nouveau_connector(connector);
191 			break;
192 		}
193 	}
194 	drm_connector_list_iter_end(&conn_iter);
195 
196 	return nv_connector;
197 }
198 
199 struct drm_connector *
200 nouveau_connector_create(struct drm_device *, const struct dcb_output *);
201 void nouveau_connector_hpd(struct drm_connector *connector);
202 
203 extern int nouveau_tv_disable;
204 extern int nouveau_ignorelid;
205 extern int nouveau_duallink;
206 extern int nouveau_hdmimhz;
207 
208 void nouveau_conn_attach_properties(struct drm_connector *);
209 void nouveau_conn_reset(struct drm_connector *);
210 struct drm_connector_state *
211 nouveau_conn_atomic_duplicate_state(struct drm_connector *);
212 void nouveau_conn_atomic_destroy_state(struct drm_connector *,
213 				       struct drm_connector_state *);
214 int nouveau_conn_atomic_set_property(struct drm_connector *,
215 				     struct drm_connector_state *,
216 				     struct drm_property *, u64);
217 int nouveau_conn_atomic_get_property(struct drm_connector *,
218 				     const struct drm_connector_state *,
219 				     struct drm_property *, u64 *);
220 struct drm_display_mode *nouveau_conn_native_mode(struct drm_connector *);
221 enum drm_mode_status
222 nouveau_conn_mode_clock_valid(const struct drm_display_mode *,
223 			      const unsigned min_clock,
224 			      const unsigned max_clock,
225 			      unsigned *clock);
226 
227 #ifdef CONFIG_DRM_NOUVEAU_BACKLIGHT
228 extern int nouveau_backlight_init(struct drm_connector *);
229 extern void nouveau_backlight_fini(struct drm_connector *);
230 extern void nouveau_backlight_ctor(void);
231 extern void nouveau_backlight_dtor(void);
232 #else
233 static inline int
234 nouveau_backlight_init(struct drm_connector *connector)
235 {
236 	return 0;
237 }
238 
239 static inline void
240 nouveau_backlight_fini(struct drm_connector *connector) {
241 }
242 
243 static inline void
244 nouveau_backlight_ctor(void) {
245 }
246 
247 static inline void
248 nouveau_backlight_dtor(void) {
249 }
250 #endif
251 
252 #endif /* __NOUVEAU_CONNECTOR_H__ */
253