1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2009-2011, Intel Corporation.
4  */
5 
6 #ifndef __INTEL_DRV_H__
7 #define __INTEL_DRV_H__
8 
9 #include <linux/i2c.h>
10 #include <linux/i2c-algo-bit.h>
11 #include <drm/drm_crtc.h>
12 #include <drm/drm_crtc_helper.h>
13 #include <drm/drm_encoder.h>
14 #include <drm/drm_probe_helper.h>
15 #include <drm/drm_vblank.h>
16 #include <linux/gpio.h>
17 #include "gma_display.h"
18 
19 /*
20  * Display related stuff
21  */
22 
23 /* maximum connectors per crtcs in the mode set */
24 #define INTELFB_CONN_LIMIT 4
25 
26 /* Intel Pipe Clone Bit */
27 #define INTEL_HDMIB_CLONE_BIT 1
28 #define INTEL_HDMIC_CLONE_BIT 2
29 #define INTEL_HDMID_CLONE_BIT 3
30 #define INTEL_HDMIE_CLONE_BIT 4
31 #define INTEL_HDMIF_CLONE_BIT 5
32 #define INTEL_SDVO_NON_TV_CLONE_BIT 6
33 #define INTEL_SDVO_TV_CLONE_BIT 7
34 #define INTEL_SDVO_LVDS_CLONE_BIT 8
35 #define INTEL_ANALOG_CLONE_BIT 9
36 #define INTEL_TV_CLONE_BIT 10
37 #define INTEL_DP_B_CLONE_BIT 11
38 #define INTEL_DP_C_CLONE_BIT 12
39 #define INTEL_DP_D_CLONE_BIT 13
40 #define INTEL_LVDS_CLONE_BIT 14
41 #define INTEL_DVO_TMDS_CLONE_BIT 15
42 #define INTEL_DVO_LVDS_CLONE_BIT 16
43 #define INTEL_EDP_CLONE_BIT 17
44 
45 /* these are outputs from the chip - integrated only
46  * external chips are via DVO or SDVO output */
47 #define INTEL_OUTPUT_UNUSED 0
48 #define INTEL_OUTPUT_ANALOG 1
49 #define INTEL_OUTPUT_DVO 2
50 #define INTEL_OUTPUT_SDVO 3
51 #define INTEL_OUTPUT_LVDS 4
52 #define INTEL_OUTPUT_TVOUT 5
53 #define INTEL_OUTPUT_HDMI 6
54 #define INTEL_OUTPUT_MIPI 7
55 #define INTEL_OUTPUT_MIPI2 8
56 #define INTEL_OUTPUT_DISPLAYPORT 9
57 #define INTEL_OUTPUT_EDP 10
58 
59 #define INTEL_MODE_PIXEL_MULTIPLIER_SHIFT (0x0)
60 #define INTEL_MODE_PIXEL_MULTIPLIER_MASK (0xf << INTEL_MODE_PIXEL_MULTIPLIER_SHIFT)
61 
62 static inline void
63 psb_intel_mode_set_pixel_multiplier(struct drm_display_mode *mode,
64 				int multiplier)
65 {
66 	mode->clock *= multiplier;
67 	mode->private_flags |= multiplier;
68 }
69 
70 static inline int
71 psb_intel_mode_get_pixel_multiplier(const struct drm_display_mode *mode)
72 {
73 	return (mode->private_flags & INTEL_MODE_PIXEL_MULTIPLIER_MASK)
74 	       >> INTEL_MODE_PIXEL_MULTIPLIER_SHIFT;
75 }
76 
77 
78 /*
79  * Hold information useally put on the device driver privates here,
80  * since it needs to be shared across multiple of devices drivers privates.
81  */
82 struct psb_intel_mode_device {
83 
84 	/*
85 	 * Abstracted memory manager operations
86 	 */
87 	 size_t(*bo_offset) (struct drm_device *dev, void *bo);
88 
89 	/*
90 	 * LVDS info
91 	 */
92 	int backlight_duty_cycle;	/* restore backlight to this value */
93 	bool panel_wants_dither;
94 	struct drm_display_mode *panel_fixed_mode;
95 	struct drm_display_mode *panel_fixed_mode2;
96 	struct drm_display_mode *vbt_mode;	/* if any */
97 
98 	uint32_t saveBLC_PWM_CTL;
99 };
100 
101 struct psb_intel_i2c_chan {
102 	/* for getting at dev. private (mmio etc.) */
103 	struct drm_device *drm_dev;
104 	u32 reg;		/* GPIO reg */
105 	struct i2c_adapter adapter;
106 	struct i2c_algo_bit_data algo;
107 	u8 slave_addr;
108 };
109 
110 struct gma_encoder {
111 	struct drm_encoder base;
112 	int type;
113 	bool needs_tv_clock;
114 	void (*hot_plug)(struct gma_encoder *);
115 	int crtc_mask;
116 	int clone_mask;
117 	u32 ddi_select;	/* Channel info */
118 #define DDI0_SELECT	0x01
119 #define DDI1_SELECT	0x02
120 #define DP_MASK		0x8000
121 #define DDI_MASK	0x03
122 	void *dev_priv; /* For sdvo_priv, lvds_priv, etc... */
123 
124 	/* FIXME: Either make SDVO and LVDS store it's i2c here or give CDV it's
125 	   own set of output privates */
126 	struct psb_intel_i2c_chan *i2c_bus;
127 	struct psb_intel_i2c_chan *ddc_bus;
128 };
129 
130 struct gma_connector {
131 	struct drm_connector base;
132 	struct gma_encoder *encoder;
133 
134 	void (*save)(struct drm_connector *connector);
135 	void (*restore)(struct drm_connector *connector);
136 };
137 
138 struct psb_intel_crtc_state {
139 	uint32_t saveDSPCNTR;
140 	uint32_t savePIPECONF;
141 	uint32_t savePIPESRC;
142 	uint32_t saveDPLL;
143 	uint32_t saveFP0;
144 	uint32_t saveFP1;
145 	uint32_t saveHTOTAL;
146 	uint32_t saveHBLANK;
147 	uint32_t saveHSYNC;
148 	uint32_t saveVTOTAL;
149 	uint32_t saveVBLANK;
150 	uint32_t saveVSYNC;
151 	uint32_t saveDSPSTRIDE;
152 	uint32_t saveDSPSIZE;
153 	uint32_t saveDSPPOS;
154 	uint32_t saveDSPBASE;
155 	uint32_t savePalette[256];
156 };
157 
158 struct gma_crtc {
159 	struct drm_crtc base;
160 	int pipe;
161 	int plane;
162 	uint32_t cursor_addr;
163 	struct gtt_range *cursor_gt;
164 	u8 lut_adj[256];
165 	struct psb_intel_framebuffer *fbdev_fb;
166 	/* a mode_set for fbdev users on this crtc */
167 	struct drm_mode_set mode_set;
168 
169 	/* GEM object that holds our cursor */
170 	struct drm_gem_object *cursor_obj;
171 
172 	struct drm_display_mode saved_mode;
173 	struct drm_display_mode saved_adjusted_mode;
174 
175 	struct psb_intel_mode_device *mode_dev;
176 
177 	/*crtc mode setting flags*/
178 	u32 mode_flags;
179 
180 	bool active;
181 
182 	/* Saved Crtc HW states */
183 	struct psb_intel_crtc_state *crtc_state;
184 
185 	const struct gma_clock_funcs *clock_funcs;
186 
187 	struct drm_pending_vblank_event *page_flip_event;
188 };
189 
190 #define to_gma_crtc(x)	\
191 		container_of(x, struct gma_crtc, base)
192 #define to_gma_connector(x) \
193 		container_of(x, struct gma_connector, base)
194 #define to_gma_encoder(x)	\
195 		container_of(x, struct gma_encoder, base)
196 #define to_psb_intel_framebuffer(x)	\
197 		container_of(x, struct psb_intel_framebuffer, base)
198 
199 struct psb_intel_i2c_chan *psb_intel_i2c_create(struct drm_device *dev,
200 					const u32 reg, const char *name);
201 void psb_intel_i2c_destroy(struct psb_intel_i2c_chan *chan);
202 int psb_intel_ddc_get_modes(struct drm_connector *connector,
203 			    struct i2c_adapter *adapter);
204 extern bool psb_intel_ddc_probe(struct i2c_adapter *adapter);
205 
206 extern void psb_intel_crtc_init(struct drm_device *dev, int pipe,
207 			    struct psb_intel_mode_device *mode_dev);
208 extern void psb_intel_crt_init(struct drm_device *dev);
209 extern bool psb_intel_sdvo_init(struct drm_device *dev, int output_device);
210 extern void psb_intel_dvo_init(struct drm_device *dev);
211 extern void psb_intel_tv_init(struct drm_device *dev);
212 extern void psb_intel_lvds_init(struct drm_device *dev,
213 			    struct psb_intel_mode_device *mode_dev);
214 extern void psb_intel_lvds_set_brightness(struct drm_device *dev, int level);
215 extern void oaktrail_lvds_init(struct drm_device *dev,
216 			   struct psb_intel_mode_device *mode_dev);
217 extern void oaktrail_wait_for_INTR_PKT_SENT(struct drm_device *dev);
218 extern void oaktrail_dsi_init(struct drm_device *dev,
219 			   struct psb_intel_mode_device *mode_dev);
220 extern void oaktrail_lvds_i2c_init(struct drm_encoder *encoder);
221 extern void mid_dsi_init(struct drm_device *dev,
222 		    struct psb_intel_mode_device *mode_dev, int dsi_num);
223 
224 extern struct drm_encoder *gma_best_encoder(struct drm_connector *connector);
225 extern void gma_connector_attach_encoder(struct gma_connector *connector,
226 					 struct gma_encoder *encoder);
227 
228 static inline struct gma_encoder *gma_attached_encoder(
229 						struct drm_connector *connector)
230 {
231 	return to_gma_connector(connector)->encoder;
232 }
233 
234 extern struct drm_display_mode *psb_intel_crtc_mode_get(struct drm_device *dev,
235 						    struct drm_crtc *crtc);
236 extern struct drm_crtc *psb_intel_get_crtc_from_pipe(struct drm_device *dev,
237 						 int pipe);
238 extern struct drm_connector *psb_intel_sdvo_find(struct drm_device *dev,
239 					     int sdvoB);
240 extern int psb_intel_sdvo_supports_hotplug(struct drm_connector *connector);
241 extern void psb_intel_sdvo_set_hotplug(struct drm_connector *connector,
242 				   int enable);
243 extern int intelfb_probe(struct drm_device *dev);
244 extern int intelfb_remove(struct drm_device *dev,
245 			  struct drm_framebuffer *fb);
246 extern bool psb_intel_lvds_mode_fixup(struct drm_encoder *encoder,
247 				      const struct drm_display_mode *mode,
248 				      struct drm_display_mode *adjusted_mode);
249 extern enum drm_mode_status psb_intel_lvds_mode_valid(struct drm_connector *connector,
250 				     struct drm_display_mode *mode);
251 extern int psb_intel_lvds_set_property(struct drm_connector *connector,
252 					struct drm_property *property,
253 					uint64_t value);
254 extern void psb_intel_lvds_destroy(struct drm_connector *connector);
255 extern const struct drm_encoder_funcs psb_intel_lvds_enc_funcs;
256 
257 /* intel_gmbus.c */
258 extern void gma_intel_i2c_reset(struct drm_device *dev);
259 extern int gma_intel_setup_gmbus(struct drm_device *dev);
260 extern void gma_intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
261 extern void gma_intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
262 extern void gma_intel_teardown_gmbus(struct drm_device *dev);
263 
264 /* DP support */
265 extern void cdv_intel_dp_init(struct drm_device *dev, struct psb_intel_mode_device *mode_dev, int output_reg);
266 extern void cdv_intel_dp_set_m_n(struct drm_crtc *crtc,
267 					struct drm_display_mode *mode,
268 					struct drm_display_mode *adjusted_mode);
269 
270 extern void psb_intel_attach_force_audio_property(struct drm_connector *connector);
271 extern void psb_intel_attach_broadcast_rgb_property(struct drm_connector *connector);
272 
273 extern int cdv_sb_read(struct drm_device *dev, u32 reg, u32 *val);
274 extern int cdv_sb_write(struct drm_device *dev, u32 reg, u32 val);
275 extern void cdv_sb_reset(struct drm_device *dev);
276 
277 extern void cdv_intel_attach_force_audio_property(struct drm_connector *connector);
278 extern void cdv_intel_attach_broadcast_rgb_property(struct drm_connector *connector);
279 
280 #endif				/* __INTEL_DRV_H__ */
281