1 /*
2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012-2013 NVIDIA CORPORATION. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10 #ifndef HOST1X_DRM_H
11 #define HOST1X_DRM_H 1
12
13 #include <uapi/drm/tegra_drm.h>
14 #include <linux/host1x.h>
15
16 #include <drm/drmP.h>
17 #include <drm/drm_crtc_helper.h>
18 #include <drm/drm_edid.h>
19 #include <drm/drm_fb_helper.h>
20 #include <drm/drm_fixed.h>
21
22 #include "gem.h"
23
24 struct reset_control;
25
26 struct tegra_fb {
27 struct drm_framebuffer base;
28 struct tegra_bo **planes;
29 unsigned int num_planes;
30 };
31
32 #ifdef CONFIG_DRM_TEGRA_FBDEV
33 struct tegra_fbdev {
34 struct drm_fb_helper base;
35 struct tegra_fb *fb;
36 };
37 #endif
38
39 struct tegra_drm {
40 struct drm_device *drm;
41
42 struct mutex clients_lock;
43 struct list_head clients;
44
45 #ifdef CONFIG_DRM_TEGRA_FBDEV
46 struct tegra_fbdev *fbdev;
47 #endif
48
49 unsigned int pitch_align;
50 };
51
52 struct tegra_drm_client;
53
54 struct tegra_drm_context {
55 struct tegra_drm_client *client;
56 struct host1x_channel *channel;
57 struct list_head list;
58 };
59
60 struct tegra_drm_client_ops {
61 int (*open_channel)(struct tegra_drm_client *client,
62 struct tegra_drm_context *context);
63 void (*close_channel)(struct tegra_drm_context *context);
64 int (*is_addr_reg)(struct device *dev, u32 class, u32 offset);
65 int (*submit)(struct tegra_drm_context *context,
66 struct drm_tegra_submit *args, struct drm_device *drm,
67 struct drm_file *file);
68 };
69
70 int tegra_drm_submit(struct tegra_drm_context *context,
71 struct drm_tegra_submit *args, struct drm_device *drm,
72 struct drm_file *file);
73
74 struct tegra_drm_client {
75 struct host1x_client base;
76 struct list_head list;
77
78 const struct tegra_drm_client_ops *ops;
79 };
80
81 static inline struct tegra_drm_client *
host1x_to_drm_client(struct host1x_client * client)82 host1x_to_drm_client(struct host1x_client *client)
83 {
84 return container_of(client, struct tegra_drm_client, base);
85 }
86
87 int tegra_drm_register_client(struct tegra_drm *tegra,
88 struct tegra_drm_client *client);
89 int tegra_drm_unregister_client(struct tegra_drm *tegra,
90 struct tegra_drm_client *client);
91
92 int tegra_drm_init(struct tegra_drm *tegra, struct drm_device *drm);
93 int tegra_drm_exit(struct tegra_drm *tegra);
94
95 struct tegra_dc_soc_info;
96 struct tegra_output;
97
98 struct tegra_dc {
99 struct host1x_client client;
100 struct device *dev;
101 spinlock_t lock;
102
103 struct drm_crtc base;
104 int pipe;
105
106 struct clk *clk;
107 struct reset_control *rst;
108 void __iomem *regs;
109 int irq;
110
111 struct tegra_output *rgb;
112
113 struct list_head list;
114
115 struct drm_info_list *debugfs_files;
116 struct drm_minor *minor;
117 struct dentry *debugfs;
118
119 /* page-flip handling */
120 struct drm_pending_vblank_event *event;
121
122 const struct tegra_dc_soc_info *soc;
123 };
124
125 static inline struct tegra_dc *
host1x_client_to_dc(struct host1x_client * client)126 host1x_client_to_dc(struct host1x_client *client)
127 {
128 return container_of(client, struct tegra_dc, client);
129 }
130
to_tegra_dc(struct drm_crtc * crtc)131 static inline struct tegra_dc *to_tegra_dc(struct drm_crtc *crtc)
132 {
133 return crtc ? container_of(crtc, struct tegra_dc, base) : NULL;
134 }
135
tegra_dc_writel(struct tegra_dc * dc,unsigned long value,unsigned long reg)136 static inline void tegra_dc_writel(struct tegra_dc *dc, unsigned long value,
137 unsigned long reg)
138 {
139 writel(value, dc->regs + (reg << 2));
140 }
141
tegra_dc_readl(struct tegra_dc * dc,unsigned long reg)142 static inline unsigned long tegra_dc_readl(struct tegra_dc *dc,
143 unsigned long reg)
144 {
145 return readl(dc->regs + (reg << 2));
146 }
147
148 struct tegra_dc_window {
149 struct {
150 unsigned int x;
151 unsigned int y;
152 unsigned int w;
153 unsigned int h;
154 } src;
155 struct {
156 unsigned int x;
157 unsigned int y;
158 unsigned int w;
159 unsigned int h;
160 } dst;
161 unsigned int bits_per_pixel;
162 unsigned int format;
163 unsigned int swap;
164 unsigned int stride[2];
165 unsigned long base[3];
166 bool bottom_up;
167
168 struct tegra_bo_tiling tiling;
169 };
170
171 /* from dc.c */
172 void tegra_dc_enable_vblank(struct tegra_dc *dc);
173 void tegra_dc_disable_vblank(struct tegra_dc *dc);
174 void tegra_dc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file);
175
176 struct tegra_output_ops {
177 int (*enable)(struct tegra_output *output);
178 int (*disable)(struct tegra_output *output);
179 int (*setup_clock)(struct tegra_output *output, struct clk *clk,
180 unsigned long pclk, unsigned int *div);
181 int (*check_mode)(struct tegra_output *output,
182 struct drm_display_mode *mode,
183 enum drm_mode_status *status);
184 enum drm_connector_status (*detect)(struct tegra_output *output);
185 };
186
187 enum tegra_output_type {
188 TEGRA_OUTPUT_RGB,
189 TEGRA_OUTPUT_HDMI,
190 TEGRA_OUTPUT_DSI,
191 TEGRA_OUTPUT_EDP,
192 };
193
194 struct tegra_output {
195 struct device_node *of_node;
196 struct device *dev;
197
198 const struct tegra_output_ops *ops;
199 enum tegra_output_type type;
200
201 struct drm_panel *panel;
202 struct i2c_adapter *ddc;
203 const struct edid *edid;
204 unsigned int hpd_irq;
205 int hpd_gpio;
206
207 struct drm_encoder encoder;
208 struct drm_connector connector;
209 };
210
encoder_to_output(struct drm_encoder * e)211 static inline struct tegra_output *encoder_to_output(struct drm_encoder *e)
212 {
213 return container_of(e, struct tegra_output, encoder);
214 }
215
connector_to_output(struct drm_connector * c)216 static inline struct tegra_output *connector_to_output(struct drm_connector *c)
217 {
218 return container_of(c, struct tegra_output, connector);
219 }
220
tegra_output_enable(struct tegra_output * output)221 static inline int tegra_output_enable(struct tegra_output *output)
222 {
223 if (output && output->ops && output->ops->enable)
224 return output->ops->enable(output);
225
226 return output ? -ENOSYS : -EINVAL;
227 }
228
tegra_output_disable(struct tegra_output * output)229 static inline int tegra_output_disable(struct tegra_output *output)
230 {
231 if (output && output->ops && output->ops->disable)
232 return output->ops->disable(output);
233
234 return output ? -ENOSYS : -EINVAL;
235 }
236
tegra_output_setup_clock(struct tegra_output * output,struct clk * clk,unsigned long pclk,unsigned int * div)237 static inline int tegra_output_setup_clock(struct tegra_output *output,
238 struct clk *clk, unsigned long pclk,
239 unsigned int *div)
240 {
241 if (output && output->ops && output->ops->setup_clock)
242 return output->ops->setup_clock(output, clk, pclk, div);
243
244 return output ? -ENOSYS : -EINVAL;
245 }
246
tegra_output_check_mode(struct tegra_output * output,struct drm_display_mode * mode,enum drm_mode_status * status)247 static inline int tegra_output_check_mode(struct tegra_output *output,
248 struct drm_display_mode *mode,
249 enum drm_mode_status *status)
250 {
251 if (output && output->ops && output->ops->check_mode)
252 return output->ops->check_mode(output, mode, status);
253
254 return output ? -ENOSYS : -EINVAL;
255 }
256
257 /* from rgb.c */
258 int tegra_dc_rgb_probe(struct tegra_dc *dc);
259 int tegra_dc_rgb_remove(struct tegra_dc *dc);
260 int tegra_dc_rgb_init(struct drm_device *drm, struct tegra_dc *dc);
261 int tegra_dc_rgb_exit(struct tegra_dc *dc);
262
263 /* from output.c */
264 int tegra_output_probe(struct tegra_output *output);
265 int tegra_output_remove(struct tegra_output *output);
266 int tegra_output_init(struct drm_device *drm, struct tegra_output *output);
267 int tegra_output_exit(struct tegra_output *output);
268
269 /* from dpaux.c */
270 struct tegra_dpaux;
271 struct drm_dp_link;
272
273 struct tegra_dpaux *tegra_dpaux_find_by_of_node(struct device_node *np);
274 enum drm_connector_status tegra_dpaux_detect(struct tegra_dpaux *dpaux);
275 int tegra_dpaux_attach(struct tegra_dpaux *dpaux, struct tegra_output *output);
276 int tegra_dpaux_detach(struct tegra_dpaux *dpaux);
277 int tegra_dpaux_enable(struct tegra_dpaux *dpaux);
278 int tegra_dpaux_disable(struct tegra_dpaux *dpaux);
279 int tegra_dpaux_prepare(struct tegra_dpaux *dpaux, u8 encoding);
280 int tegra_dpaux_train(struct tegra_dpaux *dpaux, struct drm_dp_link *link,
281 u8 pattern);
282
283 /* from fb.c */
284 struct tegra_bo *tegra_fb_get_plane(struct drm_framebuffer *framebuffer,
285 unsigned int index);
286 bool tegra_fb_is_bottom_up(struct drm_framebuffer *framebuffer);
287 int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
288 struct tegra_bo_tiling *tiling);
289 int tegra_drm_fb_prepare(struct drm_device *drm);
290 int tegra_drm_fb_init(struct drm_device *drm);
291 void tegra_drm_fb_exit(struct drm_device *drm);
292 #ifdef CONFIG_DRM_TEGRA_FBDEV
293 void tegra_fbdev_restore_mode(struct tegra_fbdev *fbdev);
294 #endif
295
296 extern struct platform_driver tegra_dc_driver;
297 extern struct platform_driver tegra_dsi_driver;
298 extern struct platform_driver tegra_sor_driver;
299 extern struct platform_driver tegra_hdmi_driver;
300 extern struct platform_driver tegra_dpaux_driver;
301 extern struct platform_driver tegra_gr2d_driver;
302 extern struct platform_driver tegra_gr3d_driver;
303
304 #endif /* HOST1X_DRM_H */
305