1/*
2 *  Support for the w100 frame buffer.
3 *
4 *  Copyright (c) 2004-2005 Richard Purdie
5 *  Copyright (c) 2005 Ian Molton
6 *
7 *  This program is free software; you can redistribute it and/or modify
8 *  it under the terms of the GNU General Public License version 2 as
9 *  published by the Free Software Foundation.
10 */
11
12#define W100_GPIO_PORT_A	0
13#define W100_GPIO_PORT_B	1
14
15#define CLK_SRC_XTAL  0
16#define CLK_SRC_PLL   1
17
18struct w100fb_par;
19
20unsigned long w100fb_gpio_read(int port);
21void w100fb_gpio_write(int port, unsigned long value);
22unsigned long w100fb_get_hsynclen(struct device *dev);
23
24/* LCD Specific Routines and Config */
25struct w100_tg_info {
26	void (*change)(struct w100fb_par*);
27	void (*suspend)(struct w100fb_par*);
28	void (*resume)(struct w100fb_par*);
29};
30
31/* General Platform Specific w100 Register Values */
32struct w100_gen_regs {
33	unsigned long lcd_format;
34	unsigned long lcdd_cntl1;
35	unsigned long lcdd_cntl2;
36	unsigned long genlcd_cntl1;
37	unsigned long genlcd_cntl2;
38	unsigned long genlcd_cntl3;
39};
40
41struct w100_gpio_regs {
42	unsigned long init_data1;
43	unsigned long init_data2;
44	unsigned long gpio_dir1;
45	unsigned long gpio_oe1;
46	unsigned long gpio_dir2;
47	unsigned long gpio_oe2;
48};
49
50/* Optional External Memory Configuration */
51struct w100_mem_info {
52	unsigned long ext_cntl;
53	unsigned long sdram_mode_reg;
54	unsigned long ext_timing_cntl;
55	unsigned long io_cntl;
56	unsigned int size;
57};
58
59struct w100_bm_mem_info {
60	unsigned long ext_mem_bw;
61	unsigned long offset;
62	unsigned long ext_timing_ctl;
63	unsigned long ext_cntl;
64	unsigned long mode_reg;
65	unsigned long io_cntl;
66	unsigned long config;
67};
68
69/* LCD Mode definition */
70struct w100_mode {
71	unsigned int xres;
72	unsigned int yres;
73	unsigned short left_margin;
74	unsigned short right_margin;
75	unsigned short upper_margin;
76	unsigned short lower_margin;
77	unsigned long crtc_ss;
78	unsigned long crtc_ls;
79	unsigned long crtc_gs;
80	unsigned long crtc_vpos_gs;
81	unsigned long crtc_rev;
82	unsigned long crtc_dclk;
83	unsigned long crtc_gclk;
84	unsigned long crtc_goe;
85	unsigned long crtc_ps1_active;
86	char pll_freq;
87	char fast_pll_freq;
88	int sysclk_src;
89	int sysclk_divider;
90	int pixclk_src;
91	int pixclk_divider;
92	int pixclk_divider_rotated;
93};
94
95struct w100_pll_info {
96	uint16_t freq;  /* desired Fout for PLL (Mhz) */
97	uint8_t M;      /* input divider */
98	uint8_t N_int;  /* VCO multiplier */
99	uint8_t N_fac;  /* VCO multiplier fractional part */
100	uint8_t tfgoal;
101	uint8_t lock_time;
102};
103
104/* Initial Video mode orientation flags */
105#define INIT_MODE_ROTATED  0x1
106#define INIT_MODE_FLIPPED  0x2
107
108/*
109 * This structure describes the machine which we are running on.
110 * It is set by machine specific code and used in the probe routine
111 * of drivers/video/w100fb.c
112 */
113struct w100fb_mach_info {
114	/* General Platform Specific Registers */
115	struct w100_gen_regs *regs;
116	/* Table of modes the LCD is capable of */
117	struct w100_mode *modelist;
118	unsigned int num_modes;
119	/* Hooks for any platform specific tg/lcd code (optional) */
120	struct w100_tg_info *tg;
121	/* External memory definition (if present) */
122	struct w100_mem_info *mem;
123	/* Additional External memory definition (if present) */
124	struct w100_bm_mem_info *bm_mem;
125	/* GPIO definitions (optional) */
126	struct w100_gpio_regs *gpio;
127	/* Initial Mode flags */
128	unsigned int init_mode;
129	/* Xtal Frequency */
130	unsigned int xtal_freq;
131	/* Enable Xtal input doubler (1 == enable) */
132	unsigned int xtal_dbl;
133};
134
135/* General frame buffer data structure */
136struct w100fb_par {
137	unsigned int chip_id;
138	unsigned int xres;
139	unsigned int yres;
140	unsigned int extmem_active;
141	unsigned int flip;
142	unsigned int blanked;
143	unsigned int fastpll_mode;
144	unsigned long hsync_len;
145	struct w100_mode *mode;
146	struct w100_pll_info *pll_table;
147	struct w100fb_mach_info *mach;
148	uint32_t *saved_intmem;
149	uint32_t *saved_extmem;
150};
151