1641 lines
48 KiB
C
1641 lines
48 KiB
C
/*
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* linux/drivers/video/w100fb.c
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*
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* Frame Buffer Device for ATI Imageon w100 (Wallaby)
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*
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* Copyright (C) 2002, ATI Corp.
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* Copyright (C) 2004-2006 Richard Purdie
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* Copyright (c) 2005 Ian Molton
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* Copyright (c) 2006 Alberto Mardegan
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*
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* Rewritten for 2.6 by Richard Purdie <rpurdie@rpsys.net>
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*
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* Generic platform support by Ian Molton <spyro@f2s.com>
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* and Richard Purdie <rpurdie@rpsys.net>
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*
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* w32xx support by Ian Molton
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*
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* Hardware acceleration support by Alberto Mardegan
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* <mardy@users.sourceforge.net>
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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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*/
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/string.h>
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#include <linux/vmalloc.h>
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#include <linux/module.h>
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#include <asm/io.h>
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#include <linux/uaccess.h>
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#include <video/w100fb.h>
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#include "w100fb.h"
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/*
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* Prototypes
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*/
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static void w100_suspend(u32 mode);
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static void w100_vsync(void);
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static void w100_hw_init(struct w100fb_par*);
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static void w100_pwm_setup(struct w100fb_par*);
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static void w100_init_clocks(struct w100fb_par*);
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static void w100_setup_memory(struct w100fb_par*);
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static void w100_init_lcd(struct w100fb_par*);
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static void w100_set_dispregs(struct w100fb_par*);
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static void w100_update_enable(void);
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static void w100_update_disable(void);
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static void calc_hsync(struct w100fb_par *par);
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static void w100_init_graphic_engine(struct w100fb_par *par);
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struct w100_pll_info *w100_get_xtal_table(unsigned int freq);
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/* Pseudo palette size */
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#define MAX_PALETTES 16
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#define W100_SUSPEND_EXTMEM 0
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#define W100_SUSPEND_ALL 1
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#define BITS_PER_PIXEL 16
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/* Remapped addresses for base cfg, memmapped regs and the frame buffer itself */
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static void *remapped_base;
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static void *remapped_regs;
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static void *remapped_fbuf;
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#define REMAPPED_FB_LEN 0x15ffff
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/* This is the offset in the w100's address space we map the current
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framebuffer memory to. We use the position of external memory as
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we can remap internal memory to there if external isn't present. */
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#define W100_FB_BASE MEM_EXT_BASE_VALUE
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/*
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* Sysfs functions
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*/
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static ssize_t flip_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct fb_info *info = dev_get_drvdata(dev);
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struct w100fb_par *par=info->par;
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return sprintf(buf, "%d\n",par->flip);
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}
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static ssize_t flip_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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unsigned int flip;
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struct fb_info *info = dev_get_drvdata(dev);
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struct w100fb_par *par=info->par;
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flip = simple_strtoul(buf, NULL, 10);
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if (flip > 0)
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par->flip = 1;
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else
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par->flip = 0;
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w100_update_disable();
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w100_set_dispregs(par);
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w100_update_enable();
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calc_hsync(par);
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return count;
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}
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static DEVICE_ATTR_RW(flip);
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static ssize_t w100fb_reg_read(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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unsigned long regs, param;
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regs = simple_strtoul(buf, NULL, 16);
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param = readl(remapped_regs + regs);
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printk("Read Register 0x%08lX: 0x%08lX\n", regs, param);
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return count;
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}
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static DEVICE_ATTR(reg_read, 0200, NULL, w100fb_reg_read);
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static ssize_t w100fb_reg_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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unsigned long regs, param;
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sscanf(buf, "%lx %lx", ®s, ¶m);
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if (regs <= 0x2000) {
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printk("Write Register 0x%08lX: 0x%08lX\n", regs, param);
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writel(param, remapped_regs + regs);
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}
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return count;
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}
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static DEVICE_ATTR(reg_write, 0200, NULL, w100fb_reg_write);
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static ssize_t fastpllclk_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct fb_info *info = dev_get_drvdata(dev);
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struct w100fb_par *par=info->par;
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return sprintf(buf, "%d\n",par->fastpll_mode);
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}
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static ssize_t fastpllclk_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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struct fb_info *info = dev_get_drvdata(dev);
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struct w100fb_par *par=info->par;
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if (simple_strtoul(buf, NULL, 10) > 0) {
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par->fastpll_mode=1;
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printk("w100fb: Using fast system clock (if possible)\n");
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} else {
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par->fastpll_mode=0;
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printk("w100fb: Using normal system clock\n");
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}
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w100_init_clocks(par);
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calc_hsync(par);
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return count;
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}
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static DEVICE_ATTR_RW(fastpllclk);
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/*
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* Some touchscreens need hsync information from the video driver to
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* function correctly. We export it here.
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*/
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unsigned long w100fb_get_hsynclen(struct device *dev)
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{
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struct fb_info *info = dev_get_drvdata(dev);
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struct w100fb_par *par=info->par;
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/* If display is blanked/suspended, hsync isn't active */
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if (par->blanked)
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return 0;
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else
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return par->hsync_len;
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}
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EXPORT_SYMBOL(w100fb_get_hsynclen);
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static void w100fb_clear_screen(struct w100fb_par *par)
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{
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memset_io(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), 0, (par->xres * par->yres * BITS_PER_PIXEL/8));
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}
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/*
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* Set a palette value from rgb components
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*/
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static int w100fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
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u_int trans, struct fb_info *info)
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{
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unsigned int val;
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int ret = 1;
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/*
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* If greyscale is true, then we convert the RGB value
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* to greyscale no matter what visual we are using.
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*/
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if (info->var.grayscale)
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red = green = blue = (19595 * red + 38470 * green + 7471 * blue) >> 16;
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/*
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* 16-bit True Colour. We encode the RGB value
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* according to the RGB bitfield information.
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*/
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if (regno < MAX_PALETTES) {
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u32 *pal = info->pseudo_palette;
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val = (red & 0xf800) | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
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pal[regno] = val;
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ret = 0;
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}
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return ret;
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}
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/*
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* Blank the display based on value in blank_mode
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*/
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static int w100fb_blank(int blank_mode, struct fb_info *info)
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{
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struct w100fb_par *par = info->par;
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struct w100_tg_info *tg = par->mach->tg;
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switch(blank_mode) {
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case FB_BLANK_NORMAL: /* Normal blanking */
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case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
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case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
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case FB_BLANK_POWERDOWN: /* Poweroff */
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if (par->blanked == 0) {
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if(tg && tg->suspend)
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tg->suspend(par);
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par->blanked = 1;
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}
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break;
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case FB_BLANK_UNBLANK: /* Unblanking */
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if (par->blanked != 0) {
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if(tg && tg->resume)
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tg->resume(par);
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par->blanked = 0;
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}
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break;
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}
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return 0;
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}
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static void w100_fifo_wait(int entries)
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{
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union rbbm_status_u status;
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int i;
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for (i = 0; i < 2000000; i++) {
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status.val = readl(remapped_regs + mmRBBM_STATUS);
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if (status.f.cmdfifo_avail >= entries)
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return;
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udelay(1);
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}
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printk(KERN_ERR "w100fb: FIFO Timeout!\n");
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}
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static int w100fb_sync(struct fb_info *info)
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{
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union rbbm_status_u status;
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int i;
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for (i = 0; i < 2000000; i++) {
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status.val = readl(remapped_regs + mmRBBM_STATUS);
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if (!status.f.gui_active)
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return 0;
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udelay(1);
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}
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printk(KERN_ERR "w100fb: Graphic engine timeout!\n");
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return -EBUSY;
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}
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static void w100_init_graphic_engine(struct w100fb_par *par)
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{
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union dp_gui_master_cntl_u gmc;
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union dp_mix_u dp_mix;
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union dp_datatype_u dp_datatype;
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union dp_cntl_u dp_cntl;
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w100_fifo_wait(4);
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writel(W100_FB_BASE, remapped_regs + mmDST_OFFSET);
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writel(par->xres, remapped_regs + mmDST_PITCH);
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writel(W100_FB_BASE, remapped_regs + mmSRC_OFFSET);
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writel(par->xres, remapped_regs + mmSRC_PITCH);
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w100_fifo_wait(3);
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writel(0, remapped_regs + mmSC_TOP_LEFT);
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writel((par->yres << 16) | par->xres, remapped_regs + mmSC_BOTTOM_RIGHT);
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writel(0x1fff1fff, remapped_regs + mmSRC_SC_BOTTOM_RIGHT);
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w100_fifo_wait(4);
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dp_cntl.val = 0;
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dp_cntl.f.dst_x_dir = 1;
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dp_cntl.f.dst_y_dir = 1;
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dp_cntl.f.src_x_dir = 1;
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dp_cntl.f.src_y_dir = 1;
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dp_cntl.f.dst_major_x = 1;
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dp_cntl.f.src_major_x = 1;
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writel(dp_cntl.val, remapped_regs + mmDP_CNTL);
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gmc.val = 0;
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gmc.f.gmc_src_pitch_offset_cntl = 1;
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gmc.f.gmc_dst_pitch_offset_cntl = 1;
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gmc.f.gmc_src_clipping = 1;
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gmc.f.gmc_dst_clipping = 1;
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gmc.f.gmc_brush_datatype = GMC_BRUSH_NONE;
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gmc.f.gmc_dst_datatype = 3; /* from DstType_16Bpp_444 */
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gmc.f.gmc_src_datatype = SRC_DATATYPE_EQU_DST;
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gmc.f.gmc_byte_pix_order = 1;
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gmc.f.gmc_default_sel = 0;
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gmc.f.gmc_rop3 = ROP3_SRCCOPY;
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gmc.f.gmc_dp_src_source = DP_SRC_MEM_RECTANGULAR;
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gmc.f.gmc_clr_cmp_fcn_dis = 1;
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gmc.f.gmc_wr_msk_dis = 1;
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gmc.f.gmc_dp_op = DP_OP_ROP;
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writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL);
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dp_datatype.val = dp_mix.val = 0;
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dp_datatype.f.dp_dst_datatype = gmc.f.gmc_dst_datatype;
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dp_datatype.f.dp_brush_datatype = gmc.f.gmc_brush_datatype;
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dp_datatype.f.dp_src2_type = 0;
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dp_datatype.f.dp_src2_datatype = gmc.f.gmc_src_datatype;
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dp_datatype.f.dp_src_datatype = gmc.f.gmc_src_datatype;
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dp_datatype.f.dp_byte_pix_order = gmc.f.gmc_byte_pix_order;
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writel(dp_datatype.val, remapped_regs + mmDP_DATATYPE);
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dp_mix.f.dp_src_source = gmc.f.gmc_dp_src_source;
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dp_mix.f.dp_src2_source = 1;
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dp_mix.f.dp_rop3 = gmc.f.gmc_rop3;
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dp_mix.f.dp_op = gmc.f.gmc_dp_op;
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writel(dp_mix.val, remapped_regs + mmDP_MIX);
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}
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static void w100fb_fillrect(struct fb_info *info,
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const struct fb_fillrect *rect)
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{
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union dp_gui_master_cntl_u gmc;
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if (info->state != FBINFO_STATE_RUNNING)
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return;
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if (info->flags & FBINFO_HWACCEL_DISABLED) {
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cfb_fillrect(info, rect);
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return;
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}
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gmc.val = readl(remapped_regs + mmDP_GUI_MASTER_CNTL);
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gmc.f.gmc_rop3 = ROP3_PATCOPY;
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gmc.f.gmc_brush_datatype = GMC_BRUSH_SOLID_COLOR;
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w100_fifo_wait(2);
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writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL);
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writel(rect->color, remapped_regs + mmDP_BRUSH_FRGD_CLR);
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w100_fifo_wait(2);
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writel((rect->dy << 16) | (rect->dx & 0xffff), remapped_regs + mmDST_Y_X);
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writel((rect->width << 16) | (rect->height & 0xffff),
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remapped_regs + mmDST_WIDTH_HEIGHT);
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}
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static void w100fb_copyarea(struct fb_info *info,
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const struct fb_copyarea *area)
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{
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u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy;
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u32 h = area->height, w = area->width;
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union dp_gui_master_cntl_u gmc;
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if (info->state != FBINFO_STATE_RUNNING)
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return;
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if (info->flags & FBINFO_HWACCEL_DISABLED) {
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cfb_copyarea(info, area);
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return;
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}
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gmc.val = readl(remapped_regs + mmDP_GUI_MASTER_CNTL);
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gmc.f.gmc_rop3 = ROP3_SRCCOPY;
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gmc.f.gmc_brush_datatype = GMC_BRUSH_NONE;
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w100_fifo_wait(1);
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writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL);
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w100_fifo_wait(3);
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writel((sy << 16) | (sx & 0xffff), remapped_regs + mmSRC_Y_X);
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writel((dy << 16) | (dx & 0xffff), remapped_regs + mmDST_Y_X);
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writel((w << 16) | (h & 0xffff), remapped_regs + mmDST_WIDTH_HEIGHT);
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}
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/*
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* Change the resolution by calling the appropriate hardware functions
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*/
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static void w100fb_activate_var(struct w100fb_par *par)
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{
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struct w100_tg_info *tg = par->mach->tg;
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w100_pwm_setup(par);
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w100_setup_memory(par);
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w100_init_clocks(par);
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w100fb_clear_screen(par);
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w100_vsync();
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w100_update_disable();
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w100_init_lcd(par);
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w100_set_dispregs(par);
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w100_update_enable();
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w100_init_graphic_engine(par);
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calc_hsync(par);
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if (!par->blanked && tg && tg->change)
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tg->change(par);
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}
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/* Select the smallest mode that allows the desired resolution to be
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* displayed. If desired, the x and y parameters can be rounded up to
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* match the selected mode.
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*/
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static struct w100_mode *w100fb_get_mode(struct w100fb_par *par, unsigned int *x, unsigned int *y, int saveval)
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{
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struct w100_mode *mode = NULL;
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struct w100_mode *modelist = par->mach->modelist;
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unsigned int best_x = 0xffffffff, best_y = 0xffffffff;
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unsigned int i;
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for (i = 0 ; i < par->mach->num_modes ; i++) {
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if (modelist[i].xres >= *x && modelist[i].yres >= *y &&
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modelist[i].xres < best_x && modelist[i].yres < best_y) {
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best_x = modelist[i].xres;
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best_y = modelist[i].yres;
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mode = &modelist[i];
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} else if(modelist[i].xres >= *y && modelist[i].yres >= *x &&
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modelist[i].xres < best_y && modelist[i].yres < best_x) {
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best_x = modelist[i].yres;
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best_y = modelist[i].xres;
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mode = &modelist[i];
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}
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}
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if (mode && saveval) {
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*x = best_x;
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*y = best_y;
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}
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return mode;
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}
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/*
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* w100fb_check_var():
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* Get the video params out of 'var'. If a value doesn't fit, round it up,
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* if it's too big, return -EINVAL.
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*/
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static int w100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
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{
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struct w100fb_par *par=info->par;
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if(!w100fb_get_mode(par, &var->xres, &var->yres, 1))
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return -EINVAL;
|
|
|
|
if (par->mach->mem && ((var->xres*var->yres*BITS_PER_PIXEL/8) > (par->mach->mem->size+1)))
|
|
return -EINVAL;
|
|
|
|
if (!par->mach->mem && ((var->xres*var->yres*BITS_PER_PIXEL/8) > (MEM_INT_SIZE+1)))
|
|
return -EINVAL;
|
|
|
|
var->xres_virtual = max(var->xres_virtual, var->xres);
|
|
var->yres_virtual = max(var->yres_virtual, var->yres);
|
|
|
|
if (var->bits_per_pixel > BITS_PER_PIXEL)
|
|
return -EINVAL;
|
|
else
|
|
var->bits_per_pixel = BITS_PER_PIXEL;
|
|
|
|
var->red.offset = 11;
|
|
var->red.length = 5;
|
|
var->green.offset = 5;
|
|
var->green.length = 6;
|
|
var->blue.offset = 0;
|
|
var->blue.length = 5;
|
|
var->transp.offset = var->transp.length = 0;
|
|
|
|
var->nonstd = 0;
|
|
var->height = -1;
|
|
var->width = -1;
|
|
var->vmode = FB_VMODE_NONINTERLACED;
|
|
var->sync = 0;
|
|
var->pixclock = 0x04; /* 171521; */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* w100fb_set_par():
|
|
* Set the user defined part of the display for the specified console
|
|
* by looking at the values in info.var
|
|
*/
|
|
static int w100fb_set_par(struct fb_info *info)
|
|
{
|
|
struct w100fb_par *par=info->par;
|
|
|
|
if (par->xres != info->var.xres || par->yres != info->var.yres) {
|
|
par->xres = info->var.xres;
|
|
par->yres = info->var.yres;
|
|
par->mode = w100fb_get_mode(par, &par->xres, &par->yres, 0);
|
|
|
|
info->fix.visual = FB_VISUAL_TRUECOLOR;
|
|
info->fix.ypanstep = 0;
|
|
info->fix.ywrapstep = 0;
|
|
info->fix.line_length = par->xres * BITS_PER_PIXEL / 8;
|
|
|
|
mutex_lock(&info->mm_lock);
|
|
if ((par->xres*par->yres*BITS_PER_PIXEL/8) > (MEM_INT_SIZE+1)) {
|
|
par->extmem_active = 1;
|
|
info->fix.smem_len = par->mach->mem->size+1;
|
|
} else {
|
|
par->extmem_active = 0;
|
|
info->fix.smem_len = MEM_INT_SIZE+1;
|
|
}
|
|
mutex_unlock(&info->mm_lock);
|
|
|
|
w100fb_activate_var(par);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Frame buffer operations
|
|
*/
|
|
static struct fb_ops w100fb_ops = {
|
|
.owner = THIS_MODULE,
|
|
.fb_check_var = w100fb_check_var,
|
|
.fb_set_par = w100fb_set_par,
|
|
.fb_setcolreg = w100fb_setcolreg,
|
|
.fb_blank = w100fb_blank,
|
|
.fb_fillrect = w100fb_fillrect,
|
|
.fb_copyarea = w100fb_copyarea,
|
|
.fb_imageblit = cfb_imageblit,
|
|
.fb_sync = w100fb_sync,
|
|
};
|
|
|
|
#ifdef CONFIG_PM
|
|
static void w100fb_save_vidmem(struct w100fb_par *par)
|
|
{
|
|
int memsize;
|
|
|
|
if (par->extmem_active) {
|
|
memsize=par->mach->mem->size;
|
|
par->saved_extmem = vmalloc(memsize);
|
|
if (par->saved_extmem)
|
|
memcpy_fromio(par->saved_extmem, remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), memsize);
|
|
}
|
|
memsize=MEM_INT_SIZE;
|
|
par->saved_intmem = vmalloc(memsize);
|
|
if (par->saved_intmem && par->extmem_active)
|
|
memcpy_fromio(par->saved_intmem, remapped_fbuf + (W100_FB_BASE-MEM_INT_BASE_VALUE), memsize);
|
|
else if (par->saved_intmem)
|
|
memcpy_fromio(par->saved_intmem, remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), memsize);
|
|
}
|
|
|
|
static void w100fb_restore_vidmem(struct w100fb_par *par)
|
|
{
|
|
int memsize;
|
|
|
|
if (par->extmem_active && par->saved_extmem) {
|
|
memsize=par->mach->mem->size;
|
|
memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), par->saved_extmem, memsize);
|
|
vfree(par->saved_extmem);
|
|
par->saved_extmem = NULL;
|
|
}
|
|
if (par->saved_intmem) {
|
|
memsize=MEM_INT_SIZE;
|
|
if (par->extmem_active)
|
|
memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_INT_BASE_VALUE), par->saved_intmem, memsize);
|
|
else
|
|
memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), par->saved_intmem, memsize);
|
|
vfree(par->saved_intmem);
|
|
par->saved_intmem = NULL;
|
|
}
|
|
}
|
|
|
|
static int w100fb_suspend(struct platform_device *dev, pm_message_t state)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(dev);
|
|
struct w100fb_par *par=info->par;
|
|
struct w100_tg_info *tg = par->mach->tg;
|
|
|
|
w100fb_save_vidmem(par);
|
|
if(tg && tg->suspend)
|
|
tg->suspend(par);
|
|
w100_suspend(W100_SUSPEND_ALL);
|
|
par->blanked = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int w100fb_resume(struct platform_device *dev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(dev);
|
|
struct w100fb_par *par=info->par;
|
|
struct w100_tg_info *tg = par->mach->tg;
|
|
|
|
w100_hw_init(par);
|
|
w100fb_activate_var(par);
|
|
w100fb_restore_vidmem(par);
|
|
if(tg && tg->resume)
|
|
tg->resume(par);
|
|
par->blanked = 0;
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define w100fb_suspend NULL
|
|
#define w100fb_resume NULL
|
|
#endif
|
|
|
|
|
|
int w100fb_probe(struct platform_device *pdev)
|
|
{
|
|
int err = -EIO;
|
|
struct w100fb_mach_info *inf;
|
|
struct fb_info *info = NULL;
|
|
struct w100fb_par *par;
|
|
struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
unsigned int chip_id;
|
|
|
|
if (!mem)
|
|
return -EINVAL;
|
|
|
|
/* Remap the chip base address */
|
|
remapped_base = ioremap_nocache(mem->start+W100_CFG_BASE, W100_CFG_LEN);
|
|
if (remapped_base == NULL)
|
|
goto out;
|
|
|
|
/* Map the register space */
|
|
remapped_regs = ioremap_nocache(mem->start+W100_REG_BASE, W100_REG_LEN);
|
|
if (remapped_regs == NULL)
|
|
goto out;
|
|
|
|
/* Identify the chip */
|
|
printk("Found ");
|
|
chip_id = readl(remapped_regs + mmCHIP_ID);
|
|
switch(chip_id) {
|
|
case CHIP_ID_W100: printk("w100"); break;
|
|
case CHIP_ID_W3200: printk("w3200"); break;
|
|
case CHIP_ID_W3220: printk("w3220"); break;
|
|
default:
|
|
printk("Unknown imageon chip ID\n");
|
|
err = -ENODEV;
|
|
goto out;
|
|
}
|
|
printk(" at 0x%08lx.\n", (unsigned long) mem->start+W100_CFG_BASE);
|
|
|
|
/* Remap the framebuffer */
|
|
remapped_fbuf = ioremap_nocache(mem->start+MEM_WINDOW_BASE, MEM_WINDOW_SIZE);
|
|
if (remapped_fbuf == NULL)
|
|
goto out;
|
|
|
|
info=framebuffer_alloc(sizeof(struct w100fb_par), &pdev->dev);
|
|
if (!info) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
par = info->par;
|
|
platform_set_drvdata(pdev, info);
|
|
|
|
inf = dev_get_platdata(&pdev->dev);
|
|
par->chip_id = chip_id;
|
|
par->mach = inf;
|
|
par->fastpll_mode = 0;
|
|
par->blanked = 0;
|
|
|
|
par->pll_table=w100_get_xtal_table(inf->xtal_freq);
|
|
if (!par->pll_table) {
|
|
printk(KERN_ERR "No matching Xtal definition found\n");
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
info->pseudo_palette = kmalloc_array(MAX_PALETTES, sizeof(u32),
|
|
GFP_KERNEL);
|
|
if (!info->pseudo_palette) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
info->fbops = &w100fb_ops;
|
|
info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
|
|
FBINFO_HWACCEL_FILLRECT;
|
|
info->node = -1;
|
|
info->screen_base = remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE);
|
|
info->screen_size = REMAPPED_FB_LEN;
|
|
|
|
strcpy(info->fix.id, "w100fb");
|
|
info->fix.type = FB_TYPE_PACKED_PIXELS;
|
|
info->fix.type_aux = 0;
|
|
info->fix.accel = FB_ACCEL_NONE;
|
|
info->fix.smem_start = mem->start+W100_FB_BASE;
|
|
info->fix.mmio_start = mem->start+W100_REG_BASE;
|
|
info->fix.mmio_len = W100_REG_LEN;
|
|
|
|
if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
|
|
err = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
par->mode = &inf->modelist[0];
|
|
if(inf->init_mode & INIT_MODE_ROTATED) {
|
|
info->var.xres = par->mode->yres;
|
|
info->var.yres = par->mode->xres;
|
|
}
|
|
else {
|
|
info->var.xres = par->mode->xres;
|
|
info->var.yres = par->mode->yres;
|
|
}
|
|
|
|
if(inf->init_mode &= INIT_MODE_FLIPPED)
|
|
par->flip = 1;
|
|
else
|
|
par->flip = 0;
|
|
|
|
info->var.xres_virtual = info->var.xres;
|
|
info->var.yres_virtual = info->var.yres;
|
|
info->var.pixclock = 0x04; /* 171521; */
|
|
info->var.sync = 0;
|
|
info->var.grayscale = 0;
|
|
info->var.xoffset = info->var.yoffset = 0;
|
|
info->var.accel_flags = 0;
|
|
info->var.activate = FB_ACTIVATE_NOW;
|
|
|
|
w100_hw_init(par);
|
|
|
|
if (w100fb_check_var(&info->var, info) < 0) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (register_framebuffer(info) < 0) {
|
|
err = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
err = device_create_file(&pdev->dev, &dev_attr_fastpllclk);
|
|
err |= device_create_file(&pdev->dev, &dev_attr_reg_read);
|
|
err |= device_create_file(&pdev->dev, &dev_attr_reg_write);
|
|
err |= device_create_file(&pdev->dev, &dev_attr_flip);
|
|
|
|
if (err != 0)
|
|
fb_warn(info, "failed to register attributes (%d)\n", err);
|
|
|
|
fb_info(info, "%s frame buffer device\n", info->fix.id);
|
|
return 0;
|
|
out:
|
|
if (info) {
|
|
fb_dealloc_cmap(&info->cmap);
|
|
kfree(info->pseudo_palette);
|
|
}
|
|
if (remapped_fbuf != NULL)
|
|
iounmap(remapped_fbuf);
|
|
if (remapped_regs != NULL)
|
|
iounmap(remapped_regs);
|
|
if (remapped_base != NULL)
|
|
iounmap(remapped_base);
|
|
if (info)
|
|
framebuffer_release(info);
|
|
return err;
|
|
}
|
|
|
|
|
|
static int w100fb_remove(struct platform_device *pdev)
|
|
{
|
|
struct fb_info *info = platform_get_drvdata(pdev);
|
|
struct w100fb_par *par=info->par;
|
|
|
|
device_remove_file(&pdev->dev, &dev_attr_fastpllclk);
|
|
device_remove_file(&pdev->dev, &dev_attr_reg_read);
|
|
device_remove_file(&pdev->dev, &dev_attr_reg_write);
|
|
device_remove_file(&pdev->dev, &dev_attr_flip);
|
|
|
|
unregister_framebuffer(info);
|
|
|
|
vfree(par->saved_intmem);
|
|
vfree(par->saved_extmem);
|
|
kfree(info->pseudo_palette);
|
|
fb_dealloc_cmap(&info->cmap);
|
|
|
|
iounmap(remapped_base);
|
|
iounmap(remapped_regs);
|
|
iounmap(remapped_fbuf);
|
|
|
|
framebuffer_release(info);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* ------------------- chipset specific functions -------------------------- */
|
|
|
|
|
|
static void w100_soft_reset(void)
|
|
{
|
|
u16 val = readw((u16 *) remapped_base + cfgSTATUS);
|
|
writew(val | 0x08, (u16 *) remapped_base + cfgSTATUS);
|
|
udelay(100);
|
|
writew(0x00, (u16 *) remapped_base + cfgSTATUS);
|
|
udelay(100);
|
|
}
|
|
|
|
static void w100_update_disable(void)
|
|
{
|
|
union disp_db_buf_cntl_wr_u disp_db_buf_wr_cntl;
|
|
|
|
/* Prevent display updates */
|
|
disp_db_buf_wr_cntl.f.db_buf_cntl = 0x1e;
|
|
disp_db_buf_wr_cntl.f.update_db_buf = 0;
|
|
disp_db_buf_wr_cntl.f.en_db_buf = 0;
|
|
writel((u32) (disp_db_buf_wr_cntl.val), remapped_regs + mmDISP_DB_BUF_CNTL);
|
|
}
|
|
|
|
static void w100_update_enable(void)
|
|
{
|
|
union disp_db_buf_cntl_wr_u disp_db_buf_wr_cntl;
|
|
|
|
/* Enable display updates */
|
|
disp_db_buf_wr_cntl.f.db_buf_cntl = 0x1e;
|
|
disp_db_buf_wr_cntl.f.update_db_buf = 1;
|
|
disp_db_buf_wr_cntl.f.en_db_buf = 1;
|
|
writel((u32) (disp_db_buf_wr_cntl.val), remapped_regs + mmDISP_DB_BUF_CNTL);
|
|
}
|
|
|
|
unsigned long w100fb_gpio_read(int port)
|
|
{
|
|
unsigned long value;
|
|
|
|
if (port==W100_GPIO_PORT_A)
|
|
value = readl(remapped_regs + mmGPIO_DATA);
|
|
else
|
|
value = readl(remapped_regs + mmGPIO_DATA2);
|
|
|
|
return value;
|
|
}
|
|
|
|
void w100fb_gpio_write(int port, unsigned long value)
|
|
{
|
|
if (port==W100_GPIO_PORT_A)
|
|
writel(value, remapped_regs + mmGPIO_DATA);
|
|
else
|
|
writel(value, remapped_regs + mmGPIO_DATA2);
|
|
}
|
|
EXPORT_SYMBOL(w100fb_gpio_read);
|
|
EXPORT_SYMBOL(w100fb_gpio_write);
|
|
|
|
/*
|
|
* Initialization of critical w100 hardware
|
|
*/
|
|
static void w100_hw_init(struct w100fb_par *par)
|
|
{
|
|
u32 temp32;
|
|
union cif_cntl_u cif_cntl;
|
|
union intf_cntl_u intf_cntl;
|
|
union cfgreg_base_u cfgreg_base;
|
|
union wrap_top_dir_u wrap_top_dir;
|
|
union cif_read_dbg_u cif_read_dbg;
|
|
union cpu_defaults_u cpu_default;
|
|
union cif_write_dbg_u cif_write_dbg;
|
|
union wrap_start_dir_u wrap_start_dir;
|
|
union cif_io_u cif_io;
|
|
struct w100_gpio_regs *gpio = par->mach->gpio;
|
|
|
|
w100_soft_reset();
|
|
|
|
/* This is what the fpga_init code does on reset. May be wrong
|
|
but there is little info available */
|
|
writel(0x31, remapped_regs + mmSCRATCH_UMSK);
|
|
for (temp32 = 0; temp32 < 10000; temp32++)
|
|
readl(remapped_regs + mmSCRATCH_UMSK);
|
|
writel(0x30, remapped_regs + mmSCRATCH_UMSK);
|
|
|
|
/* Set up CIF */
|
|
cif_io.val = defCIF_IO;
|
|
writel((u32)(cif_io.val), remapped_regs + mmCIF_IO);
|
|
|
|
cif_write_dbg.val = readl(remapped_regs + mmCIF_WRITE_DBG);
|
|
cif_write_dbg.f.dis_packer_ful_during_rbbm_timeout = 0;
|
|
cif_write_dbg.f.en_dword_split_to_rbbm = 1;
|
|
cif_write_dbg.f.dis_timeout_during_rbbm = 1;
|
|
writel((u32) (cif_write_dbg.val), remapped_regs + mmCIF_WRITE_DBG);
|
|
|
|
cif_read_dbg.val = readl(remapped_regs + mmCIF_READ_DBG);
|
|
cif_read_dbg.f.dis_rd_same_byte_to_trig_fetch = 1;
|
|
writel((u32) (cif_read_dbg.val), remapped_regs + mmCIF_READ_DBG);
|
|
|
|
cif_cntl.val = readl(remapped_regs + mmCIF_CNTL);
|
|
cif_cntl.f.dis_system_bits = 1;
|
|
cif_cntl.f.dis_mr = 1;
|
|
cif_cntl.f.en_wait_to_compensate_dq_prop_dly = 0;
|
|
cif_cntl.f.intb_oe = 1;
|
|
cif_cntl.f.interrupt_active_high = 1;
|
|
writel((u32) (cif_cntl.val), remapped_regs + mmCIF_CNTL);
|
|
|
|
/* Setup cfgINTF_CNTL and cfgCPU defaults */
|
|
intf_cntl.val = defINTF_CNTL;
|
|
intf_cntl.f.ad_inc_a = 1;
|
|
intf_cntl.f.ad_inc_b = 1;
|
|
intf_cntl.f.rd_data_rdy_a = 0;
|
|
intf_cntl.f.rd_data_rdy_b = 0;
|
|
writeb((u8) (intf_cntl.val), remapped_base + cfgINTF_CNTL);
|
|
|
|
cpu_default.val = defCPU_DEFAULTS;
|
|
cpu_default.f.access_ind_addr_a = 1;
|
|
cpu_default.f.access_ind_addr_b = 1;
|
|
cpu_default.f.access_scratch_reg = 1;
|
|
cpu_default.f.transition_size = 0;
|
|
writeb((u8) (cpu_default.val), remapped_base + cfgCPU_DEFAULTS);
|
|
|
|
/* set up the apertures */
|
|
writeb((u8) (W100_REG_BASE >> 16), remapped_base + cfgREG_BASE);
|
|
|
|
cfgreg_base.val = defCFGREG_BASE;
|
|
cfgreg_base.f.cfgreg_base = W100_CFG_BASE;
|
|
writel((u32) (cfgreg_base.val), remapped_regs + mmCFGREG_BASE);
|
|
|
|
wrap_start_dir.val = defWRAP_START_DIR;
|
|
wrap_start_dir.f.start_addr = WRAP_BUF_BASE_VALUE >> 1;
|
|
writel((u32) (wrap_start_dir.val), remapped_regs + mmWRAP_START_DIR);
|
|
|
|
wrap_top_dir.val = defWRAP_TOP_DIR;
|
|
wrap_top_dir.f.top_addr = WRAP_BUF_TOP_VALUE >> 1;
|
|
writel((u32) (wrap_top_dir.val), remapped_regs + mmWRAP_TOP_DIR);
|
|
|
|
writel((u32) 0x2440, remapped_regs + mmRBBM_CNTL);
|
|
|
|
/* Set the hardware to 565 colour */
|
|
temp32 = readl(remapped_regs + mmDISP_DEBUG2);
|
|
temp32 &= 0xff7fffff;
|
|
temp32 |= 0x00800000;
|
|
writel(temp32, remapped_regs + mmDISP_DEBUG2);
|
|
|
|
/* Initialise the GPIO lines */
|
|
if (gpio) {
|
|
writel(gpio->init_data1, remapped_regs + mmGPIO_DATA);
|
|
writel(gpio->init_data2, remapped_regs + mmGPIO_DATA2);
|
|
writel(gpio->gpio_dir1, remapped_regs + mmGPIO_CNTL1);
|
|
writel(gpio->gpio_oe1, remapped_regs + mmGPIO_CNTL2);
|
|
writel(gpio->gpio_dir2, remapped_regs + mmGPIO_CNTL3);
|
|
writel(gpio->gpio_oe2, remapped_regs + mmGPIO_CNTL4);
|
|
}
|
|
}
|
|
|
|
|
|
struct power_state {
|
|
union clk_pin_cntl_u clk_pin_cntl;
|
|
union pll_ref_fb_div_u pll_ref_fb_div;
|
|
union pll_cntl_u pll_cntl;
|
|
union sclk_cntl_u sclk_cntl;
|
|
union pclk_cntl_u pclk_cntl;
|
|
union pwrmgt_cntl_u pwrmgt_cntl;
|
|
int auto_mode; /* system clock auto changing? */
|
|
};
|
|
|
|
|
|
static struct power_state w100_pwr_state;
|
|
|
|
/* The PLL Fout is determined by (XtalFreq/(M+1)) * ((N_int+1) + (N_fac/8)) */
|
|
|
|
/* 12.5MHz Crystal PLL Table */
|
|
static struct w100_pll_info xtal_12500000[] = {
|
|
/*freq M N_int N_fac tfgoal lock_time */
|
|
{ 50, 0, 1, 0, 0xe0, 56}, /* 50.00 MHz */
|
|
{ 75, 0, 5, 0, 0xde, 37}, /* 75.00 MHz */
|
|
{100, 0, 7, 0, 0xe0, 28}, /* 100.00 MHz */
|
|
{125, 0, 9, 0, 0xe0, 22}, /* 125.00 MHz */
|
|
{150, 0, 11, 0, 0xe0, 17}, /* 150.00 MHz */
|
|
{ 0, 0, 0, 0, 0, 0}, /* Terminator */
|
|
};
|
|
|
|
/* 14.318MHz Crystal PLL Table */
|
|
static struct w100_pll_info xtal_14318000[] = {
|
|
/*freq M N_int N_fac tfgoal lock_time */
|
|
{ 40, 4, 13, 0, 0xe0, 80}, /* tfgoal guessed */
|
|
{ 50, 1, 6, 0, 0xe0, 64}, /* 50.05 MHz */
|
|
{ 57, 2, 11, 0, 0xe0, 53}, /* tfgoal guessed */
|
|
{ 75, 0, 4, 3, 0xe0, 43}, /* 75.08 MHz */
|
|
{100, 0, 6, 0, 0xe0, 32}, /* 100.10 MHz */
|
|
{ 0, 0, 0, 0, 0, 0},
|
|
};
|
|
|
|
/* 16MHz Crystal PLL Table */
|
|
static struct w100_pll_info xtal_16000000[] = {
|
|
/*freq M N_int N_fac tfgoal lock_time */
|
|
{ 72, 1, 8, 0, 0xe0, 48}, /* tfgoal guessed */
|
|
{ 80, 1, 9, 0, 0xe0, 13}, /* tfgoal guessed */
|
|
{ 95, 1, 10, 7, 0xe0, 38}, /* tfgoal guessed */
|
|
{ 96, 1, 11, 0, 0xe0, 36}, /* tfgoal guessed */
|
|
{ 0, 0, 0, 0, 0, 0},
|
|
};
|
|
|
|
static struct pll_entries {
|
|
int xtal_freq;
|
|
struct w100_pll_info *pll_table;
|
|
} w100_pll_tables[] = {
|
|
{ 12500000, &xtal_12500000[0] },
|
|
{ 14318000, &xtal_14318000[0] },
|
|
{ 16000000, &xtal_16000000[0] },
|
|
{ 0 },
|
|
};
|
|
|
|
struct w100_pll_info *w100_get_xtal_table(unsigned int freq)
|
|
{
|
|
struct pll_entries *pll_entry = w100_pll_tables;
|
|
|
|
do {
|
|
if (freq == pll_entry->xtal_freq)
|
|
return pll_entry->pll_table;
|
|
pll_entry++;
|
|
} while (pll_entry->xtal_freq);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static unsigned int w100_get_testcount(unsigned int testclk_sel)
|
|
{
|
|
union clk_test_cntl_u clk_test_cntl;
|
|
|
|
udelay(5);
|
|
|
|
/* Select the test clock source and reset */
|
|
clk_test_cntl.f.start_check_freq = 0x0;
|
|
clk_test_cntl.f.testclk_sel = testclk_sel;
|
|
clk_test_cntl.f.tstcount_rst = 0x1; /* set reset */
|
|
writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
|
|
|
|
clk_test_cntl.f.tstcount_rst = 0x0; /* clear reset */
|
|
writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
|
|
|
|
/* Run clock test */
|
|
clk_test_cntl.f.start_check_freq = 0x1;
|
|
writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
|
|
|
|
/* Give the test time to complete */
|
|
udelay(20);
|
|
|
|
/* Return the result */
|
|
clk_test_cntl.val = readl(remapped_regs + mmCLK_TEST_CNTL);
|
|
clk_test_cntl.f.start_check_freq = 0x0;
|
|
writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
|
|
|
|
return clk_test_cntl.f.test_count;
|
|
}
|
|
|
|
|
|
static int w100_pll_adjust(struct w100_pll_info *pll)
|
|
{
|
|
unsigned int tf80;
|
|
unsigned int tf20;
|
|
|
|
/* Initial Settings */
|
|
w100_pwr_state.pll_cntl.f.pll_pwdn = 0x0; /* power down */
|
|
w100_pwr_state.pll_cntl.f.pll_reset = 0x0; /* not reset */
|
|
w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x1; /* Hi-Z */
|
|
w100_pwr_state.pll_cntl.f.pll_pvg = 0x0; /* VCO gain = 0 */
|
|
w100_pwr_state.pll_cntl.f.pll_vcofr = 0x0; /* VCO frequency range control = off */
|
|
w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0; /* current offset inside VCO = 0 */
|
|
w100_pwr_state.pll_cntl.f.pll_ring_off = 0x0;
|
|
|
|
/* Wai Ming 80 percent of VDD 1.3V gives 1.04V, minimum operating voltage is 1.08V
|
|
* therefore, commented out the following lines
|
|
* tf80 meant tf100
|
|
*/
|
|
do {
|
|
/* set VCO input = 0.8 * VDD */
|
|
w100_pwr_state.pll_cntl.f.pll_dactal = 0xd;
|
|
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
|
|
|
|
tf80 = w100_get_testcount(TESTCLK_SRC_PLL);
|
|
if (tf80 >= (pll->tfgoal)) {
|
|
/* set VCO input = 0.2 * VDD */
|
|
w100_pwr_state.pll_cntl.f.pll_dactal = 0x7;
|
|
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
|
|
|
|
tf20 = w100_get_testcount(TESTCLK_SRC_PLL);
|
|
if (tf20 <= (pll->tfgoal))
|
|
return 1; /* Success */
|
|
|
|
if ((w100_pwr_state.pll_cntl.f.pll_vcofr == 0x0) &&
|
|
((w100_pwr_state.pll_cntl.f.pll_pvg == 0x7) ||
|
|
(w100_pwr_state.pll_cntl.f.pll_ioffset == 0x0))) {
|
|
/* slow VCO config */
|
|
w100_pwr_state.pll_cntl.f.pll_vcofr = 0x1;
|
|
w100_pwr_state.pll_cntl.f.pll_pvg = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0;
|
|
continue;
|
|
}
|
|
}
|
|
if ((w100_pwr_state.pll_cntl.f.pll_ioffset) < 0x3) {
|
|
w100_pwr_state.pll_cntl.f.pll_ioffset += 0x1;
|
|
} else if ((w100_pwr_state.pll_cntl.f.pll_pvg) < 0x7) {
|
|
w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_pvg += 0x1;
|
|
} else {
|
|
return 0; /* Error */
|
|
}
|
|
} while(1);
|
|
}
|
|
|
|
|
|
/*
|
|
* w100_pll_calibration
|
|
*/
|
|
static int w100_pll_calibration(struct w100_pll_info *pll)
|
|
{
|
|
int status;
|
|
|
|
status = w100_pll_adjust(pll);
|
|
|
|
/* PLL Reset And Lock */
|
|
/* set VCO input = 0.5 * VDD */
|
|
w100_pwr_state.pll_cntl.f.pll_dactal = 0xa;
|
|
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
|
|
|
|
udelay(1); /* reset time */
|
|
|
|
/* enable charge pump */
|
|
w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x0; /* normal */
|
|
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
|
|
|
|
/* set VCO input = Hi-Z, disable DAC */
|
|
w100_pwr_state.pll_cntl.f.pll_dactal = 0x0;
|
|
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
|
|
|
|
udelay(400); /* lock time */
|
|
|
|
/* PLL locked */
|
|
|
|
return status;
|
|
}
|
|
|
|
|
|
static int w100_pll_set_clk(struct w100_pll_info *pll)
|
|
{
|
|
int status;
|
|
|
|
if (w100_pwr_state.auto_mode == 1) /* auto mode */
|
|
{
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x0; /* disable fast to normal */
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x0; /* disable normal to fast */
|
|
writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
|
|
}
|
|
|
|
/* Set system clock source to XTAL whilst adjusting the PLL! */
|
|
w100_pwr_state.sclk_cntl.f.sclk_src_sel = CLK_SRC_XTAL;
|
|
writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
|
|
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_ref_div = pll->M;
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_int = pll->N_int;
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_frac = pll->N_fac;
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_lock_time = pll->lock_time;
|
|
writel((u32) (w100_pwr_state.pll_ref_fb_div.val), remapped_regs + mmPLL_REF_FB_DIV);
|
|
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_mode_req = 0;
|
|
writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
|
|
|
|
status = w100_pll_calibration(pll);
|
|
|
|
if (w100_pwr_state.auto_mode == 1) /* auto mode */
|
|
{
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x1; /* reenable fast to normal */
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x1; /* reenable normal to fast */
|
|
writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/* freq = target frequency of the PLL */
|
|
static int w100_set_pll_freq(struct w100fb_par *par, unsigned int freq)
|
|
{
|
|
struct w100_pll_info *pll = par->pll_table;
|
|
|
|
do {
|
|
if (freq == pll->freq) {
|
|
return w100_pll_set_clk(pll);
|
|
}
|
|
pll++;
|
|
} while(pll->freq);
|
|
return 0;
|
|
}
|
|
|
|
/* Set up an initial state. Some values/fields set
|
|
here will be overwritten. */
|
|
static void w100_pwm_setup(struct w100fb_par *par)
|
|
{
|
|
w100_pwr_state.clk_pin_cntl.f.osc_en = 0x1;
|
|
w100_pwr_state.clk_pin_cntl.f.osc_gain = 0x1f;
|
|
w100_pwr_state.clk_pin_cntl.f.dont_use_xtalin = 0x0;
|
|
w100_pwr_state.clk_pin_cntl.f.xtalin_pm_en = 0x0;
|
|
w100_pwr_state.clk_pin_cntl.f.xtalin_dbl_en = par->mach->xtal_dbl ? 1 : 0;
|
|
w100_pwr_state.clk_pin_cntl.f.cg_debug = 0x0;
|
|
writel((u32) (w100_pwr_state.clk_pin_cntl.val), remapped_regs + mmCLK_PIN_CNTL);
|
|
|
|
w100_pwr_state.sclk_cntl.f.sclk_src_sel = CLK_SRC_XTAL;
|
|
w100_pwr_state.sclk_cntl.f.sclk_post_div_fast = 0x0; /* Pfast = 1 */
|
|
w100_pwr_state.sclk_cntl.f.sclk_clkon_hys = 0x3;
|
|
w100_pwr_state.sclk_cntl.f.sclk_post_div_slow = 0x0; /* Pslow = 1 */
|
|
w100_pwr_state.sclk_cntl.f.disp_cg_ok2switch_en = 0x0;
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_reg = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_disp = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_mc = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_extmc = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_cp = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_e2 = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_e3 = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_idct = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.sclk_force_bist = 0x0; /* Dynamic */
|
|
w100_pwr_state.sclk_cntl.f.busy_extend_cp = 0x0;
|
|
w100_pwr_state.sclk_cntl.f.busy_extend_e2 = 0x0;
|
|
w100_pwr_state.sclk_cntl.f.busy_extend_e3 = 0x0;
|
|
w100_pwr_state.sclk_cntl.f.busy_extend_idct = 0x0;
|
|
writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
|
|
|
|
w100_pwr_state.pclk_cntl.f.pclk_src_sel = CLK_SRC_XTAL;
|
|
w100_pwr_state.pclk_cntl.f.pclk_post_div = 0x1; /* P = 2 */
|
|
w100_pwr_state.pclk_cntl.f.pclk_force_disp = 0x0; /* Dynamic */
|
|
writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL);
|
|
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_ref_div = 0x0; /* M = 1 */
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_int = 0x0; /* N = 1.0 */
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_frac = 0x0;
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_reset_time = 0x5;
|
|
w100_pwr_state.pll_ref_fb_div.f.pll_lock_time = 0xff;
|
|
writel((u32) (w100_pwr_state.pll_ref_fb_div.val), remapped_regs + mmPLL_REF_FB_DIV);
|
|
|
|
w100_pwr_state.pll_cntl.f.pll_pwdn = 0x1;
|
|
w100_pwr_state.pll_cntl.f.pll_reset = 0x1;
|
|
w100_pwr_state.pll_cntl.f.pll_pm_en = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_mode = 0x0; /* uses VCO clock */
|
|
w100_pwr_state.pll_cntl.f.pll_refclk_sel = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_fbclk_sel = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_pcp = 0x4;
|
|
w100_pwr_state.pll_cntl.f.pll_pvg = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_vcofr = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_pecc_mode = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_pecc_scon = 0x0;
|
|
w100_pwr_state.pll_cntl.f.pll_dactal = 0x0; /* Hi-Z */
|
|
w100_pwr_state.pll_cntl.f.pll_cp_clip = 0x3;
|
|
w100_pwr_state.pll_cntl.f.pll_conf = 0x2;
|
|
w100_pwr_state.pll_cntl.f.pll_mbctrl = 0x2;
|
|
w100_pwr_state.pll_cntl.f.pll_ring_off = 0x0;
|
|
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
|
|
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_enable = 0x0;
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_mode_req = 0x1; /* normal mode (0, 1, 3) */
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_wakeup_cond = 0x0;
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x0;
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x0;
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_cond = 0x1; /* PM4,ENG */
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_cond = 0x1; /* PM4,ENG */
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_idle_timer = 0xFF;
|
|
w100_pwr_state.pwrmgt_cntl.f.pwm_busy_timer = 0xFF;
|
|
writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
|
|
|
|
w100_pwr_state.auto_mode = 0; /* manual mode */
|
|
}
|
|
|
|
|
|
/*
|
|
* Setup the w100 clocks for the specified mode
|
|
*/
|
|
static void w100_init_clocks(struct w100fb_par *par)
|
|
{
|
|
struct w100_mode *mode = par->mode;
|
|
|
|
if (mode->pixclk_src == CLK_SRC_PLL || mode->sysclk_src == CLK_SRC_PLL)
|
|
w100_set_pll_freq(par, (par->fastpll_mode && mode->fast_pll_freq) ? mode->fast_pll_freq : mode->pll_freq);
|
|
|
|
w100_pwr_state.sclk_cntl.f.sclk_src_sel = mode->sysclk_src;
|
|
w100_pwr_state.sclk_cntl.f.sclk_post_div_fast = mode->sysclk_divider;
|
|
w100_pwr_state.sclk_cntl.f.sclk_post_div_slow = mode->sysclk_divider;
|
|
writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
|
|
}
|
|
|
|
static void w100_init_lcd(struct w100fb_par *par)
|
|
{
|
|
u32 temp32;
|
|
struct w100_mode *mode = par->mode;
|
|
struct w100_gen_regs *regs = par->mach->regs;
|
|
union active_h_disp_u active_h_disp;
|
|
union active_v_disp_u active_v_disp;
|
|
union graphic_h_disp_u graphic_h_disp;
|
|
union graphic_v_disp_u graphic_v_disp;
|
|
union crtc_total_u crtc_total;
|
|
|
|
/* w3200 doesn't like undefined bits being set so zero register values first */
|
|
|
|
active_h_disp.val = 0;
|
|
active_h_disp.f.active_h_start=mode->left_margin;
|
|
active_h_disp.f.active_h_end=mode->left_margin + mode->xres;
|
|
writel(active_h_disp.val, remapped_regs + mmACTIVE_H_DISP);
|
|
|
|
active_v_disp.val = 0;
|
|
active_v_disp.f.active_v_start=mode->upper_margin;
|
|
active_v_disp.f.active_v_end=mode->upper_margin + mode->yres;
|
|
writel(active_v_disp.val, remapped_regs + mmACTIVE_V_DISP);
|
|
|
|
graphic_h_disp.val = 0;
|
|
graphic_h_disp.f.graphic_h_start=mode->left_margin;
|
|
graphic_h_disp.f.graphic_h_end=mode->left_margin + mode->xres;
|
|
writel(graphic_h_disp.val, remapped_regs + mmGRAPHIC_H_DISP);
|
|
|
|
graphic_v_disp.val = 0;
|
|
graphic_v_disp.f.graphic_v_start=mode->upper_margin;
|
|
graphic_v_disp.f.graphic_v_end=mode->upper_margin + mode->yres;
|
|
writel(graphic_v_disp.val, remapped_regs + mmGRAPHIC_V_DISP);
|
|
|
|
crtc_total.val = 0;
|
|
crtc_total.f.crtc_h_total=mode->left_margin + mode->xres + mode->right_margin;
|
|
crtc_total.f.crtc_v_total=mode->upper_margin + mode->yres + mode->lower_margin;
|
|
writel(crtc_total.val, remapped_regs + mmCRTC_TOTAL);
|
|
|
|
writel(mode->crtc_ss, remapped_regs + mmCRTC_SS);
|
|
writel(mode->crtc_ls, remapped_regs + mmCRTC_LS);
|
|
writel(mode->crtc_gs, remapped_regs + mmCRTC_GS);
|
|
writel(mode->crtc_vpos_gs, remapped_regs + mmCRTC_VPOS_GS);
|
|
writel(mode->crtc_rev, remapped_regs + mmCRTC_REV);
|
|
writel(mode->crtc_dclk, remapped_regs + mmCRTC_DCLK);
|
|
writel(mode->crtc_gclk, remapped_regs + mmCRTC_GCLK);
|
|
writel(mode->crtc_goe, remapped_regs + mmCRTC_GOE);
|
|
writel(mode->crtc_ps1_active, remapped_regs + mmCRTC_PS1_ACTIVE);
|
|
|
|
writel(regs->lcd_format, remapped_regs + mmLCD_FORMAT);
|
|
writel(regs->lcdd_cntl1, remapped_regs + mmLCDD_CNTL1);
|
|
writel(regs->lcdd_cntl2, remapped_regs + mmLCDD_CNTL2);
|
|
writel(regs->genlcd_cntl1, remapped_regs + mmGENLCD_CNTL1);
|
|
writel(regs->genlcd_cntl2, remapped_regs + mmGENLCD_CNTL2);
|
|
writel(regs->genlcd_cntl3, remapped_regs + mmGENLCD_CNTL3);
|
|
|
|
writel(0x00000000, remapped_regs + mmCRTC_FRAME);
|
|
writel(0x00000000, remapped_regs + mmCRTC_FRAME_VPOS);
|
|
writel(0x00000000, remapped_regs + mmCRTC_DEFAULT_COUNT);
|
|
writel(0x0000FF00, remapped_regs + mmLCD_BACKGROUND_COLOR);
|
|
|
|
/* Hack for overlay in ext memory */
|
|
temp32 = readl(remapped_regs + mmDISP_DEBUG2);
|
|
temp32 |= 0xc0000000;
|
|
writel(temp32, remapped_regs + mmDISP_DEBUG2);
|
|
}
|
|
|
|
|
|
static void w100_setup_memory(struct w100fb_par *par)
|
|
{
|
|
union mc_ext_mem_location_u extmem_location;
|
|
union mc_fb_location_u intmem_location;
|
|
struct w100_mem_info *mem = par->mach->mem;
|
|
struct w100_bm_mem_info *bm_mem = par->mach->bm_mem;
|
|
|
|
if (!par->extmem_active) {
|
|
w100_suspend(W100_SUSPEND_EXTMEM);
|
|
|
|
/* Map Internal Memory at FB Base */
|
|
intmem_location.f.mc_fb_start = W100_FB_BASE >> 8;
|
|
intmem_location.f.mc_fb_top = (W100_FB_BASE+MEM_INT_SIZE) >> 8;
|
|
writel((u32) (intmem_location.val), remapped_regs + mmMC_FB_LOCATION);
|
|
|
|
/* Unmap External Memory - value is *probably* irrelevant but may have meaning
|
|
to acceleration libraries */
|
|
extmem_location.f.mc_ext_mem_start = MEM_EXT_BASE_VALUE >> 8;
|
|
extmem_location.f.mc_ext_mem_top = (MEM_EXT_BASE_VALUE-1) >> 8;
|
|
writel((u32) (extmem_location.val), remapped_regs + mmMC_EXT_MEM_LOCATION);
|
|
} else {
|
|
/* Map Internal Memory to its default location */
|
|
intmem_location.f.mc_fb_start = MEM_INT_BASE_VALUE >> 8;
|
|
intmem_location.f.mc_fb_top = (MEM_INT_BASE_VALUE+MEM_INT_SIZE) >> 8;
|
|
writel((u32) (intmem_location.val), remapped_regs + mmMC_FB_LOCATION);
|
|
|
|
/* Map External Memory at FB Base */
|
|
extmem_location.f.mc_ext_mem_start = W100_FB_BASE >> 8;
|
|
extmem_location.f.mc_ext_mem_top = (W100_FB_BASE+par->mach->mem->size) >> 8;
|
|
writel((u32) (extmem_location.val), remapped_regs + mmMC_EXT_MEM_LOCATION);
|
|
|
|
writel(0x00007800, remapped_regs + mmMC_BIST_CTRL);
|
|
writel(mem->ext_cntl, remapped_regs + mmMEM_EXT_CNTL);
|
|
writel(0x00200021, remapped_regs + mmMEM_SDRAM_MODE_REG);
|
|
udelay(100);
|
|
writel(0x80200021, remapped_regs + mmMEM_SDRAM_MODE_REG);
|
|
udelay(100);
|
|
writel(mem->sdram_mode_reg, remapped_regs + mmMEM_SDRAM_MODE_REG);
|
|
udelay(100);
|
|
writel(mem->ext_timing_cntl, remapped_regs + mmMEM_EXT_TIMING_CNTL);
|
|
writel(mem->io_cntl, remapped_regs + mmMEM_IO_CNTL);
|
|
if (bm_mem) {
|
|
writel(bm_mem->ext_mem_bw, remapped_regs + mmBM_EXT_MEM_BANDWIDTH);
|
|
writel(bm_mem->offset, remapped_regs + mmBM_OFFSET);
|
|
writel(bm_mem->ext_timing_ctl, remapped_regs + mmBM_MEM_EXT_TIMING_CNTL);
|
|
writel(bm_mem->ext_cntl, remapped_regs + mmBM_MEM_EXT_CNTL);
|
|
writel(bm_mem->mode_reg, remapped_regs + mmBM_MEM_MODE_REG);
|
|
writel(bm_mem->io_cntl, remapped_regs + mmBM_MEM_IO_CNTL);
|
|
writel(bm_mem->config, remapped_regs + mmBM_CONFIG);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void w100_set_dispregs(struct w100fb_par *par)
|
|
{
|
|
unsigned long rot=0, divider, offset=0;
|
|
union graphic_ctrl_u graphic_ctrl;
|
|
|
|
/* See if the mode has been rotated */
|
|
if (par->xres == par->mode->xres) {
|
|
if (par->flip) {
|
|
rot=3; /* 180 degree */
|
|
offset=(par->xres * par->yres) - 1;
|
|
} /* else 0 degree */
|
|
divider = par->mode->pixclk_divider;
|
|
} else {
|
|
if (par->flip) {
|
|
rot=2; /* 270 degree */
|
|
offset=par->xres - 1;
|
|
} else {
|
|
rot=1; /* 90 degree */
|
|
offset=par->xres * (par->yres - 1);
|
|
}
|
|
divider = par->mode->pixclk_divider_rotated;
|
|
}
|
|
|
|
graphic_ctrl.val = 0; /* w32xx doesn't like undefined bits */
|
|
switch (par->chip_id) {
|
|
case CHIP_ID_W100:
|
|
graphic_ctrl.f_w100.color_depth=6;
|
|
graphic_ctrl.f_w100.en_crtc=1;
|
|
graphic_ctrl.f_w100.en_graphic_req=1;
|
|
graphic_ctrl.f_w100.en_graphic_crtc=1;
|
|
graphic_ctrl.f_w100.lcd_pclk_on=1;
|
|
graphic_ctrl.f_w100.lcd_sclk_on=1;
|
|
graphic_ctrl.f_w100.low_power_on=0;
|
|
graphic_ctrl.f_w100.req_freq=0;
|
|
graphic_ctrl.f_w100.portrait_mode=rot;
|
|
|
|
/* Zaurus needs this */
|
|
switch(par->xres) {
|
|
case 240:
|
|
case 320:
|
|
default:
|
|
graphic_ctrl.f_w100.total_req_graphic=0xa0;
|
|
break;
|
|
case 480:
|
|
case 640:
|
|
switch(rot) {
|
|
case 0: /* 0 */
|
|
case 3: /* 180 */
|
|
graphic_ctrl.f_w100.low_power_on=1;
|
|
graphic_ctrl.f_w100.req_freq=5;
|
|
break;
|
|
case 1: /* 90 */
|
|
case 2: /* 270 */
|
|
graphic_ctrl.f_w100.req_freq=4;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
graphic_ctrl.f_w100.total_req_graphic=0xf0;
|
|
break;
|
|
}
|
|
break;
|
|
case CHIP_ID_W3200:
|
|
case CHIP_ID_W3220:
|
|
graphic_ctrl.f_w32xx.color_depth=6;
|
|
graphic_ctrl.f_w32xx.en_crtc=1;
|
|
graphic_ctrl.f_w32xx.en_graphic_req=1;
|
|
graphic_ctrl.f_w32xx.en_graphic_crtc=1;
|
|
graphic_ctrl.f_w32xx.lcd_pclk_on=1;
|
|
graphic_ctrl.f_w32xx.lcd_sclk_on=1;
|
|
graphic_ctrl.f_w32xx.low_power_on=0;
|
|
graphic_ctrl.f_w32xx.req_freq=0;
|
|
graphic_ctrl.f_w32xx.total_req_graphic=par->mode->xres >> 1; /* panel xres, not mode */
|
|
graphic_ctrl.f_w32xx.portrait_mode=rot;
|
|
break;
|
|
}
|
|
|
|
/* Set the pixel clock source and divider */
|
|
w100_pwr_state.pclk_cntl.f.pclk_src_sel = par->mode->pixclk_src;
|
|
w100_pwr_state.pclk_cntl.f.pclk_post_div = divider;
|
|
writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL);
|
|
|
|
writel(graphic_ctrl.val, remapped_regs + mmGRAPHIC_CTRL);
|
|
writel(W100_FB_BASE + ((offset * BITS_PER_PIXEL/8)&~0x03UL), remapped_regs + mmGRAPHIC_OFFSET);
|
|
writel((par->xres*BITS_PER_PIXEL/8), remapped_regs + mmGRAPHIC_PITCH);
|
|
}
|
|
|
|
|
|
/*
|
|
* Work out how long the sync pulse lasts
|
|
* Value is 1/(time in seconds)
|
|
*/
|
|
static void calc_hsync(struct w100fb_par *par)
|
|
{
|
|
unsigned long hsync;
|
|
struct w100_mode *mode = par->mode;
|
|
union crtc_ss_u crtc_ss;
|
|
|
|
if (mode->pixclk_src == CLK_SRC_XTAL)
|
|
hsync=par->mach->xtal_freq;
|
|
else
|
|
hsync=((par->fastpll_mode && mode->fast_pll_freq) ? mode->fast_pll_freq : mode->pll_freq)*100000;
|
|
|
|
hsync /= (w100_pwr_state.pclk_cntl.f.pclk_post_div + 1);
|
|
|
|
crtc_ss.val = readl(remapped_regs + mmCRTC_SS);
|
|
if (crtc_ss.val)
|
|
par->hsync_len = hsync / (crtc_ss.f.ss_end-crtc_ss.f.ss_start);
|
|
else
|
|
par->hsync_len = 0;
|
|
}
|
|
|
|
static void w100_suspend(u32 mode)
|
|
{
|
|
u32 val;
|
|
|
|
writel(0x7FFF8000, remapped_regs + mmMC_EXT_MEM_LOCATION);
|
|
writel(0x00FF0000, remapped_regs + mmMC_PERF_MON_CNTL);
|
|
|
|
val = readl(remapped_regs + mmMEM_EXT_TIMING_CNTL);
|
|
val &= ~(0x00100000); /* bit20=0 */
|
|
val |= 0xFF000000; /* bit31:24=0xff */
|
|
writel(val, remapped_regs + mmMEM_EXT_TIMING_CNTL);
|
|
|
|
val = readl(remapped_regs + mmMEM_EXT_CNTL);
|
|
val &= ~(0x00040000); /* bit18=0 */
|
|
val |= 0x00080000; /* bit19=1 */
|
|
writel(val, remapped_regs + mmMEM_EXT_CNTL);
|
|
|
|
udelay(1); /* wait 1us */
|
|
|
|
if (mode == W100_SUSPEND_EXTMEM) {
|
|
/* CKE: Tri-State */
|
|
val = readl(remapped_regs + mmMEM_EXT_CNTL);
|
|
val |= 0x40000000; /* bit30=1 */
|
|
writel(val, remapped_regs + mmMEM_EXT_CNTL);
|
|
|
|
/* CLK: Stop */
|
|
val = readl(remapped_regs + mmMEM_EXT_CNTL);
|
|
val &= ~(0x00000001); /* bit0=0 */
|
|
writel(val, remapped_regs + mmMEM_EXT_CNTL);
|
|
} else {
|
|
writel(0x00000000, remapped_regs + mmSCLK_CNTL);
|
|
writel(0x000000BF, remapped_regs + mmCLK_PIN_CNTL);
|
|
writel(0x00000015, remapped_regs + mmPWRMGT_CNTL);
|
|
|
|
udelay(5);
|
|
|
|
val = readl(remapped_regs + mmPLL_CNTL);
|
|
val |= 0x00000004; /* bit2=1 */
|
|
writel(val, remapped_regs + mmPLL_CNTL);
|
|
|
|
writel(0x00000000, remapped_regs + mmLCDD_CNTL1);
|
|
writel(0x00000000, remapped_regs + mmLCDD_CNTL2);
|
|
writel(0x00000000, remapped_regs + mmGENLCD_CNTL1);
|
|
writel(0x00000000, remapped_regs + mmGENLCD_CNTL2);
|
|
writel(0x00000000, remapped_regs + mmGENLCD_CNTL3);
|
|
|
|
val = readl(remapped_regs + mmMEM_EXT_CNTL);
|
|
val |= 0xF0000000;
|
|
val &= ~(0x00000001);
|
|
writel(val, remapped_regs + mmMEM_EXT_CNTL);
|
|
|
|
writel(0x0000001d, remapped_regs + mmPWRMGT_CNTL);
|
|
}
|
|
}
|
|
|
|
static void w100_vsync(void)
|
|
{
|
|
u32 tmp;
|
|
int timeout = 30000; /* VSync timeout = 30[ms] > 16.8[ms] */
|
|
|
|
tmp = readl(remapped_regs + mmACTIVE_V_DISP);
|
|
|
|
/* set vline pos */
|
|
writel((tmp >> 16) & 0x3ff, remapped_regs + mmDISP_INT_CNTL);
|
|
|
|
/* disable vline irq */
|
|
tmp = readl(remapped_regs + mmGEN_INT_CNTL);
|
|
|
|
tmp &= ~0x00000002;
|
|
writel(tmp, remapped_regs + mmGEN_INT_CNTL);
|
|
|
|
/* clear vline irq status */
|
|
writel(0x00000002, remapped_regs + mmGEN_INT_STATUS);
|
|
|
|
/* enable vline irq */
|
|
writel((tmp | 0x00000002), remapped_regs + mmGEN_INT_CNTL);
|
|
|
|
/* clear vline irq status */
|
|
writel(0x00000002, remapped_regs + mmGEN_INT_STATUS);
|
|
|
|
while(timeout > 0) {
|
|
if (readl(remapped_regs + mmGEN_INT_STATUS) & 0x00000002)
|
|
break;
|
|
udelay(1);
|
|
timeout--;
|
|
}
|
|
|
|
/* disable vline irq */
|
|
writel(tmp, remapped_regs + mmGEN_INT_CNTL);
|
|
|
|
/* clear vline irq status */
|
|
writel(0x00000002, remapped_regs + mmGEN_INT_STATUS);
|
|
}
|
|
|
|
static struct platform_driver w100fb_driver = {
|
|
.probe = w100fb_probe,
|
|
.remove = w100fb_remove,
|
|
.suspend = w100fb_suspend,
|
|
.resume = w100fb_resume,
|
|
.driver = {
|
|
.name = "w100fb",
|
|
},
|
|
};
|
|
|
|
module_platform_driver(w100fb_driver);
|
|
|
|
MODULE_DESCRIPTION("ATI Imageon w100 framebuffer driver");
|
|
MODULE_LICENSE("GPL");
|