151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
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/*
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* Support for the w100 frame buffer.
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*
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* Copyright (c) 2004-2005 Richard Purdie
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* Copyright (c) 2005 Ian Molton
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#define W100_GPIO_PORT_A 0
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#define W100_GPIO_PORT_B 1
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#define CLK_SRC_XTAL 0
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#define CLK_SRC_PLL 1
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struct w100fb_par;
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unsigned long w100fb_gpio_read(int port);
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void w100fb_gpio_write(int port, unsigned long value);
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unsigned long w100fb_get_hsynclen(struct device *dev);
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/* LCD Specific Routines and Config */
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struct w100_tg_info {
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void (*change)(struct w100fb_par*);
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void (*suspend)(struct w100fb_par*);
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void (*resume)(struct w100fb_par*);
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};
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/* General Platform Specific w100 Register Values */
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struct w100_gen_regs {
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unsigned long lcd_format;
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unsigned long lcdd_cntl1;
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unsigned long lcdd_cntl2;
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unsigned long genlcd_cntl1;
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unsigned long genlcd_cntl2;
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unsigned long genlcd_cntl3;
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};
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struct w100_gpio_regs {
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unsigned long init_data1;
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unsigned long init_data2;
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unsigned long gpio_dir1;
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unsigned long gpio_oe1;
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unsigned long gpio_dir2;
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unsigned long gpio_oe2;
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};
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/* Optional External Memory Configuration */
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struct w100_mem_info {
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unsigned long ext_cntl;
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unsigned long sdram_mode_reg;
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unsigned long ext_timing_cntl;
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unsigned long io_cntl;
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unsigned int size;
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};
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struct w100_bm_mem_info {
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unsigned long ext_mem_bw;
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unsigned long offset;
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unsigned long ext_timing_ctl;
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unsigned long ext_cntl;
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unsigned long mode_reg;
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unsigned long io_cntl;
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unsigned long config;
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};
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/* LCD Mode definition */
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struct w100_mode {
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unsigned int xres;
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unsigned int yres;
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unsigned short left_margin;
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unsigned short right_margin;
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unsigned short upper_margin;
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unsigned short lower_margin;
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unsigned long crtc_ss;
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unsigned long crtc_ls;
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unsigned long crtc_gs;
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unsigned long crtc_vpos_gs;
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unsigned long crtc_rev;
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unsigned long crtc_dclk;
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unsigned long crtc_gclk;
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unsigned long crtc_goe;
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unsigned long crtc_ps1_active;
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char pll_freq;
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char fast_pll_freq;
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int sysclk_src;
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int sysclk_divider;
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int pixclk_src;
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int pixclk_divider;
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int pixclk_divider_rotated;
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};
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struct w100_pll_info {
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uint16_t freq; /* desired Fout for PLL (Mhz) */
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uint8_t M; /* input divider */
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uint8_t N_int; /* VCO multiplier */
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uint8_t N_fac; /* VCO multiplier fractional part */
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uint8_t tfgoal;
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uint8_t lock_time;
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};
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/* Initial Video mode orientation flags */
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#define INIT_MODE_ROTATED 0x1
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#define INIT_MODE_FLIPPED 0x2
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/*
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* This structure describes the machine which we are running on.
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* It is set by machine specific code and used in the probe routine
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* of drivers/video/w100fb.c
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*/
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struct w100fb_mach_info {
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/* General Platform Specific Registers */
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struct w100_gen_regs *regs;
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/* Table of modes the LCD is capable of */
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struct w100_mode *modelist;
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unsigned int num_modes;
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/* Hooks for any platform specific tg/lcd code (optional) */
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struct w100_tg_info *tg;
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/* External memory definition (if present) */
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struct w100_mem_info *mem;
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/* Additional External memory definition (if present) */
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struct w100_bm_mem_info *bm_mem;
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/* GPIO definitions (optional) */
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struct w100_gpio_regs *gpio;
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/* Initial Mode flags */
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unsigned int init_mode;
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/* Xtal Frequency */
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unsigned int xtal_freq;
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/* Enable Xtal input doubler (1 == enable) */
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unsigned int xtal_dbl;
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};
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/* General frame buffer data structure */
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struct w100fb_par {
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unsigned int chip_id;
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unsigned int xres;
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unsigned int yres;
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unsigned int extmem_active;
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unsigned int flip;
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unsigned int blanked;
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unsigned int fastpll_mode;
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unsigned long hsync_len;
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struct w100_mode *mode;
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struct w100_pll_info *pll_table;
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struct w100fb_mach_info *mach;
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uint32_t *saved_intmem;
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uint32_t *saved_extmem;
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};
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