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 
18 struct w100fb_par;
19 
20 unsigned long w100fb_gpio_read(int port);
21 void w100fb_gpio_write(int port, unsigned long value);
22 unsigned long w100fb_get_hsynclen(struct device *dev);
23 
24 /* LCD Specific Routines and Config */
25 struct 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 */
32 struct 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 
41 struct 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 */
51 struct 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 
59 struct 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 */
70 struct 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 
95 struct 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  */
113 struct 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 */
136 struct 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