xref: /linux/drivers/gpu/drm/nouveau/nouveau_bios.h (revision 95298d63c67673c654c08952672d016212b26054)
1 /*
2  * Copyright 2007-2008 Nouveau Project
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21  * DEALINGS IN THE SOFTWARE.
22  */
23 
24 #ifndef __NOUVEAU_DISPBIOS_H__
25 #define __NOUVEAU_DISPBIOS_H__
26 
27 #define DCB_MAX_NUM_ENTRIES 16
28 #define DCB_MAX_NUM_I2C_ENTRIES 16
29 #define DCB_MAX_NUM_GPIO_ENTRIES 32
30 #define DCB_MAX_NUM_CONNECTOR_ENTRIES 16
31 
32 #define DCB_LOC_ON_CHIP 0
33 
34 #define ROM16(x) get_unaligned_le16(&(x))
35 #define ROM32(x) get_unaligned_le32(&(x))
36 #define ROMPTR(d,x) ({            \
37 	struct nouveau_drm *drm = nouveau_drm((d)); \
38 	ROM16(x) ? &drm->vbios.data[ROM16(x)] : NULL; \
39 })
40 
41 struct bit_entry {
42 	uint8_t  id;
43 	uint8_t  version;
44 	uint16_t length;
45 	uint16_t offset;
46 	uint8_t *data;
47 };
48 
49 int bit_table(struct drm_device *, u8 id, struct bit_entry *);
50 
51 #include <subdev/bios/dcb.h>
52 #include <subdev/bios/conn.h>
53 
54 struct dcb_table {
55 	uint8_t version;
56 	int entries;
57 	struct dcb_output entry[DCB_MAX_NUM_ENTRIES];
58 };
59 
60 enum nouveau_or {
61 	DCB_OUTPUT_A = (1 << 0),
62 	DCB_OUTPUT_B = (1 << 1),
63 	DCB_OUTPUT_C = (1 << 2)
64 };
65 
66 enum LVDS_script {
67 	/* Order *does* matter here */
68 	LVDS_INIT = 1,
69 	LVDS_RESET,
70 	LVDS_BACKLIGHT_ON,
71 	LVDS_BACKLIGHT_OFF,
72 	LVDS_PANEL_ON,
73 	LVDS_PANEL_OFF
74 };
75 
76 struct nvbios {
77 	struct drm_device *dev;
78 	enum {
79 		NVBIOS_BMP,
80 		NVBIOS_BIT
81 	} type;
82 	uint16_t offset;
83 	uint32_t length;
84 	uint8_t *data;
85 
86 	uint8_t chip_version;
87 
88 	uint32_t dactestval;
89 	uint32_t tvdactestval;
90 	uint8_t digital_min_front_porch;
91 	bool fp_no_ddc;
92 
93 	spinlock_t lock;
94 
95 	bool execute;
96 
97 	uint8_t major_version;
98 	uint8_t feature_byte;
99 	bool is_mobile;
100 
101 	uint32_t fmaxvco, fminvco;
102 
103 	bool old_style_init;
104 	uint16_t init_script_tbls_ptr;
105 	uint16_t extra_init_script_tbl_ptr;
106 
107 	uint16_t ram_restrict_tbl_ptr;
108 	uint8_t ram_restrict_group_count;
109 
110 	struct dcb_table dcb;
111 
112 	struct {
113 		int crtchead;
114 	} state;
115 
116 	struct {
117 		uint16_t fptablepointer;	/* also used by tmds */
118 		uint16_t fpxlatetableptr;
119 		int xlatwidth;
120 		uint16_t lvdsmanufacturerpointer;
121 		uint16_t fpxlatemanufacturertableptr;
122 		uint16_t mode_ptr;
123 		uint16_t xlated_entry;
124 		bool power_off_for_reset;
125 		bool reset_after_pclk_change;
126 		bool dual_link;
127 		bool link_c_increment;
128 		bool if_is_24bit;
129 		int duallink_transition_clk;
130 		uint8_t strapless_is_24bit;
131 		uint8_t *edid;
132 
133 		/* will need resetting after suspend */
134 		int last_script_invoc;
135 		bool lvds_init_run;
136 	} fp;
137 
138 	struct {
139 		uint16_t output0_script_ptr;
140 		uint16_t output1_script_ptr;
141 	} tmds;
142 
143 	struct {
144 		uint16_t mem_init_tbl_ptr;
145 		uint16_t sdr_seq_tbl_ptr;
146 		uint16_t ddr_seq_tbl_ptr;
147 
148 		struct {
149 			uint8_t crt, tv, panel;
150 		} i2c_indices;
151 
152 		uint16_t lvds_single_a_script_ptr;
153 	} legacy;
154 };
155 
156 void *olddcb_table(struct drm_device *);
157 void *olddcb_outp(struct drm_device *, u8 idx);
158 int olddcb_outp_foreach(struct drm_device *, void *data,
159 		     int (*)(struct drm_device *, void *, int idx, u8 *outp));
160 u8 *olddcb_conntab(struct drm_device *);
161 u8 *olddcb_conn(struct drm_device *, u8 idx);
162 
163 int nouveau_bios_init(struct drm_device *);
164 void nouveau_bios_takedown(struct drm_device *dev);
165 int nouveau_run_vbios_init(struct drm_device *);
166 struct dcb_connector_table_entry *
167 nouveau_bios_connector_entry(struct drm_device *, int index);
168 bool nouveau_bios_fp_mode(struct drm_device *, struct drm_display_mode *);
169 uint8_t *nouveau_bios_embedded_edid(struct drm_device *);
170 int nouveau_bios_parse_lvds_table(struct drm_device *, int pxclk,
171 					 bool *dl, bool *if_is_24bit);
172 int run_tmds_table(struct drm_device *, struct dcb_output *,
173 			  int head, int pxclk);
174 int call_lvds_script(struct drm_device *, struct dcb_output *, int head,
175 			    enum LVDS_script, int pxclk);
176 
177 #endif
178