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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/video/w100fb.c

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53 KiB
C
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/*
* linux/drivers/video/w100fb.c
*
* Frame Buffer Device for ATI Imageon w100 (Wallaby)
*
* Copyright (C) 2002, ATI Corp.
* Copyright (C) 2004-2005 Richard Purdie
*
* Rewritten for 2.6 by Richard Purdie <rpurdie@rpsys.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/device.h>
#include <linux/string.h>
#include <linux/proc_fs.h>
#include <asm/io.h>
#include <asm/uaccess.h>
#include <video/w100fb.h>
#include "w100fb.h"
/*
* Prototypes
*/
static void w100fb_save_buffer(void);
static void w100fb_clear_buffer(void);
static void w100fb_restore_buffer(void);
static void w100fb_clear_screen(u32 mode, long int offset);
static void w100_resume(void);
static void w100_suspend(u32 mode);
static void w100_init_qvga_rotation(u16 deg);
static void w100_init_vga_rotation(u16 deg);
static void w100_vsync(void);
static void w100_init_sharp_lcd(u32 mode);
static void w100_pwm_setup(void);
static void w100_InitExtMem(u32 mode);
static void w100_hw_init(void);
static u16 w100_set_fastsysclk(u16 Freq);
static void lcdtg_hw_init(u32 mode);
static void lcdtg_lcd_change(u32 mode);
static void lcdtg_resume(void);
static void lcdtg_suspend(void);
/* Register offsets & lengths */
#define REMAPPED_FB_LEN 0x15ffff
#define BITS_PER_PIXEL 16
/* Pseudo palette size */
#define MAX_PALETTES 16
/* for resolution change */
#define LCD_MODE_INIT (-1)
#define LCD_MODE_480 0
#define LCD_MODE_320 1
#define LCD_MODE_240 2
#define LCD_MODE_640 3
#define LCD_SHARP_QVGA 0
#define LCD_SHARP_VGA 1
#define LCD_MODE_PORTRAIT 0
#define LCD_MODE_LANDSCAPE 1
#define W100_SUSPEND_EXTMEM 0
#define W100_SUSPEND_ALL 1
/* General frame buffer data structures */
struct w100fb_par {
u32 xres;
u32 yres;
int fastsysclk_mode;
int lcdMode;
int rotation_flag;
int blanking_flag;
int comadj;
int phadadj;
};
static struct w100fb_par *current_par;
/* Remapped addresses for base cfg, memmapped regs and the frame buffer itself */
static void *remapped_base;
static void *remapped_regs;
static void *remapped_fbuf;
/* External Function */
static void(*w100fb_ssp_send)(u8 adrs, u8 data);
/*
* Sysfs functions
*/
static ssize_t rotation_show(struct device *dev, char *buf)
{
struct fb_info *info = dev_get_drvdata(dev);
struct w100fb_par *par=info->par;
return sprintf(buf, "%d\n",par->rotation_flag);
}
static ssize_t rotation_store(struct device *dev, const char *buf, size_t count)
{
unsigned int rotate;
struct fb_info *info = dev_get_drvdata(dev);
struct w100fb_par *par=info->par;
rotate = simple_strtoul(buf, NULL, 10);
if (rotate > 0) par->rotation_flag = 1;
else par->rotation_flag = 0;
if (par->lcdMode == LCD_MODE_320)
w100_init_qvga_rotation(par->rotation_flag ? 270 : 90);
else if (par->lcdMode == LCD_MODE_240)
w100_init_qvga_rotation(par->rotation_flag ? 180 : 0);
else if (par->lcdMode == LCD_MODE_640)
w100_init_vga_rotation(par->rotation_flag ? 270 : 90);
else if (par->lcdMode == LCD_MODE_480)
w100_init_vga_rotation(par->rotation_flag ? 180 : 0);
return count;
}
static DEVICE_ATTR(rotation, 0644, rotation_show, rotation_store);
static ssize_t w100fb_reg_read(struct device *dev, const char *buf, size_t count)
{
unsigned long param;
unsigned long regs;
regs = simple_strtoul(buf, NULL, 16);
param = readl(remapped_regs + regs);
printk("Read Register 0x%08lX: 0x%08lX\n", regs, param);
return count;
}
static DEVICE_ATTR(reg_read, 0200, NULL, w100fb_reg_read);
static ssize_t w100fb_reg_write(struct device *dev, const char *buf, size_t count)
{
unsigned long regs;
unsigned long param;
sscanf(buf, "%lx %lx", &regs, &param);
if (regs <= 0x2000) {
printk("Write Register 0x%08lX: 0x%08lX\n", regs, param);
writel(param, remapped_regs + regs);
}
return count;
}
static DEVICE_ATTR(reg_write, 0200, NULL, w100fb_reg_write);
static ssize_t fastsysclk_show(struct device *dev, char *buf)
{
struct fb_info *info = dev_get_drvdata(dev);
struct w100fb_par *par=info->par;
return sprintf(buf, "%d\n",par->fastsysclk_mode);
}
static ssize_t fastsysclk_store(struct device *dev, const char *buf, size_t count)
{
int param;
struct fb_info *info = dev_get_drvdata(dev);
struct w100fb_par *par=info->par;
param = simple_strtoul(buf, NULL, 10);
if (param == 75) {
printk("Set fastsysclk %d\n", param);
par->fastsysclk_mode = param;
w100_set_fastsysclk(par->fastsysclk_mode);
} else if (param == 100) {
printk("Set fastsysclk %d\n", param);
par->fastsysclk_mode = param;
w100_set_fastsysclk(par->fastsysclk_mode);
}
return count;
}
static DEVICE_ATTR(fastsysclk, 0644, fastsysclk_show, fastsysclk_store);
/*
* The touchscreen on this device needs certain information
* from the video driver to function correctly. We export it here.
*/
int w100fb_get_xres(void) {
return current_par->xres;
}
int w100fb_get_blanking(void) {
return current_par->blanking_flag;
}
int w100fb_get_fastsysclk(void) {
return current_par->fastsysclk_mode;
}
EXPORT_SYMBOL(w100fb_get_xres);
EXPORT_SYMBOL(w100fb_get_blanking);
EXPORT_SYMBOL(w100fb_get_fastsysclk);
/*
* Set a palette value from rgb components
*/
static int w100fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int trans, struct fb_info *info)
{
unsigned int val;
int ret = 1;
/*
* If greyscale is true, then we convert the RGB value
* to greyscale no matter what visual we are using.
*/
if (info->var.grayscale)
red = green = blue = (19595 * red + 38470 * green + 7471 * blue) >> 16;
/*
* 16-bit True Colour. We encode the RGB value
* according to the RGB bitfield information.
*/
if (regno < MAX_PALETTES) {
u32 *pal = info->pseudo_palette;
val = (red & 0xf800) | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
pal[regno] = val;
ret = 0;
}
return ret;
}
/*
* Blank the display based on value in blank_mode
*/
static int w100fb_blank(int blank_mode, struct fb_info *info)
{
struct w100fb_par *par;
par=info->par;
switch(blank_mode) {
case FB_BLANK_NORMAL: /* Normal blanking */
case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
case FB_BLANK_POWERDOWN: /* Poweroff */
if (par->blanking_flag == 0) {
w100fb_save_buffer();
lcdtg_suspend();
par->blanking_flag = 1;
}
break;
case FB_BLANK_UNBLANK: /* Unblanking */
if (par->blanking_flag != 0) {
w100fb_restore_buffer();
lcdtg_resume();
par->blanking_flag = 0;
}
break;
}
return 0;
}
/*
* Change the resolution by calling the appropriate hardware functions
*/
static void w100fb_changeres(int rotate_mode, u32 mode)
{
u16 rotation=0;
switch(rotate_mode) {
case LCD_MODE_LANDSCAPE:
rotation=(current_par->rotation_flag ? 270 : 90);
break;
case LCD_MODE_PORTRAIT:
rotation=(current_par->rotation_flag ? 180 : 0);
break;
}
w100_pwm_setup();
switch(mode) {
case LCD_SHARP_QVGA:
w100_vsync();
w100_suspend(W100_SUSPEND_EXTMEM);
w100_init_sharp_lcd(LCD_SHARP_QVGA);
w100_init_qvga_rotation(rotation);
w100_InitExtMem(LCD_SHARP_QVGA);
w100fb_clear_screen(LCD_SHARP_QVGA, 0);
lcdtg_lcd_change(LCD_SHARP_QVGA);
break;
case LCD_SHARP_VGA:
w100fb_clear_screen(LCD_SHARP_QVGA, 0);
writel(0xBFFFA000, remapped_regs + mmMC_EXT_MEM_LOCATION);
w100_InitExtMem(LCD_SHARP_VGA);
w100fb_clear_screen(LCD_SHARP_VGA, 0x200000);
w100_vsync();
w100_init_sharp_lcd(LCD_SHARP_VGA);
if (rotation != 0)
w100_init_vga_rotation(rotation);
lcdtg_lcd_change(LCD_SHARP_VGA);
break;
}
}
/*
* Set up the display for the fb subsystem
*/
static void w100fb_activate_var(struct fb_info *info)
{
u32 temp32;
struct w100fb_par *par=info->par;
struct fb_var_screeninfo *var = &info->var;
/* Set the hardware to 565 */
temp32 = readl(remapped_regs + mmDISP_DEBUG2);
temp32 &= 0xff7fffff;
temp32 |= 0x00800000;
writel(temp32, remapped_regs + mmDISP_DEBUG2);
if (par->lcdMode == LCD_MODE_INIT) {
w100_init_sharp_lcd(LCD_SHARP_VGA);
w100_init_vga_rotation(par->rotation_flag ? 270 : 90);
par->lcdMode = LCD_MODE_640;
lcdtg_hw_init(LCD_SHARP_VGA);
} else if (var->xres == 320 && var->yres == 240) {
if (par->lcdMode != LCD_MODE_320) {
w100fb_changeres(LCD_MODE_LANDSCAPE, LCD_SHARP_QVGA);
par->lcdMode = LCD_MODE_320;
}
} else if (var->xres == 240 && var->yres == 320) {
if (par->lcdMode != LCD_MODE_240) {
w100fb_changeres(LCD_MODE_PORTRAIT, LCD_SHARP_QVGA);
par->lcdMode = LCD_MODE_240;
}
} else if (var->xres == 640 && var->yres == 480) {
if (par->lcdMode != LCD_MODE_640) {
w100fb_changeres(LCD_MODE_LANDSCAPE, LCD_SHARP_VGA);
par->lcdMode = LCD_MODE_640;
}
} else if (var->xres == 480 && var->yres == 640) {
if (par->lcdMode != LCD_MODE_480) {
w100fb_changeres(LCD_MODE_PORTRAIT, LCD_SHARP_VGA);
par->lcdMode = LCD_MODE_480;
}
} else printk(KERN_ERR "W100FB: Resolution error!\n");
}
/*
* w100fb_check_var():
* Get the video params out of 'var'. If a value doesn't fit, round it up,
* if it's too big, return -EINVAL.
*
*/
static int w100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
if (var->xres < var->yres) { /* Portrait mode */
if ((var->xres > 480) || (var->yres > 640)) {
return -EINVAL;
} else if ((var->xres > 240) || (var->yres > 320)) {
var->xres = 480;
var->yres = 640;
} else {
var->xres = 240;
var->yres = 320;
}
} else { /* Landscape mode */
if ((var->xres > 640) || (var->yres > 480)) {
return -EINVAL;
} else if ((var->xres > 320) || (var->yres > 240)) {
var->xres = 640;
var->yres = 480;
} else {
var->xres = 320;
var->yres = 240;
}
}
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;
par->xres = info->var.xres;
par->yres = info->var.yres;
info->fix.visual = FB_VISUAL_TRUECOLOR;
info->fix.ypanstep = 0;
info->fix.ywrapstep = 0;
if (par->blanking_flag)
w100fb_clear_buffer();
w100fb_activate_var(info);
if (par->lcdMode == LCD_MODE_480) {
info->fix.line_length = (480 * BITS_PER_PIXEL) / 8;
info->fix.smem_len = 0x200000;
} else if (par->lcdMode == LCD_MODE_320) {
info->fix.line_length = (320 * BITS_PER_PIXEL) / 8;
info->fix.smem_len = 0x60000;
} else if (par->lcdMode == LCD_MODE_240) {
info->fix.line_length = (240 * BITS_PER_PIXEL) / 8;
info->fix.smem_len = 0x60000;
} else if (par->lcdMode == LCD_MODE_INIT || par->lcdMode == LCD_MODE_640) {
info->fix.line_length = (640 * BITS_PER_PIXEL) / 8;
info->fix.smem_len = 0x200000;
}
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 = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_cursor = soft_cursor,
};
static void w100fb_clear_screen(u32 mode, long int offset)
{
int i, numPix = 0;
if (mode == LCD_SHARP_VGA)
numPix = 640 * 480;
else if (mode == LCD_SHARP_QVGA)
numPix = 320 * 240;
for (i = 0; i < numPix; i++)
writew(0xffff, remapped_fbuf + offset + (2*i));
}
/* Need to split up the buffers to stay within the limits of kmalloc */
#define W100_BUF_NUM 6
static uint32_t *gSaveImagePtr[W100_BUF_NUM] = { NULL };
static void w100fb_save_buffer(void)
{
int i, j, bufsize;
bufsize=(current_par->xres * current_par->yres * BITS_PER_PIXEL / 8) / W100_BUF_NUM;
for (i = 0; i < W100_BUF_NUM; i++) {
if (gSaveImagePtr[i] == NULL)
gSaveImagePtr[i] = kmalloc(bufsize, GFP_KERNEL);
if (gSaveImagePtr[i] == NULL) {
w100fb_clear_buffer();
printk(KERN_WARNING "can't alloc pre-off image buffer %d\n", i);
break;
}
for (j = 0; j < bufsize/4; j++)
*(gSaveImagePtr[i] + j) = readl(remapped_fbuf + (bufsize*i) + j*4);
}
}
static void w100fb_restore_buffer(void)
{
int i, j, bufsize;
bufsize=(current_par->xres * current_par->yres * BITS_PER_PIXEL / 8) / W100_BUF_NUM;
for (i = 0; i < W100_BUF_NUM; i++) {
if (gSaveImagePtr[i] == NULL) {
printk(KERN_WARNING "can't find pre-off image buffer %d\n", i);
w100fb_clear_buffer();
break;
}
for (j = 0; j < (bufsize/4); j++)
writel(*(gSaveImagePtr[i] + j),remapped_fbuf + (bufsize*i) + (j*4));
kfree(gSaveImagePtr[i]);
gSaveImagePtr[i] = NULL;
}
}
static void w100fb_clear_buffer(void)
{
int i;
for (i = 0; i < W100_BUF_NUM; i++) {
kfree(gSaveImagePtr[i]);
gSaveImagePtr[i] = NULL;
}
}
#ifdef CONFIG_PM
static int w100fb_suspend(struct device *dev, pm_message_t state, u32 level)
{
if (level == SUSPEND_POWER_DOWN) {
struct fb_info *info = dev_get_drvdata(dev);
struct w100fb_par *par=info->par;
w100fb_save_buffer();
lcdtg_suspend();
w100_suspend(W100_SUSPEND_ALL);
par->blanking_flag = 1;
}
return 0;
}
static int w100fb_resume(struct device *dev, u32 level)
{
if (level == RESUME_POWER_ON) {
struct fb_info *info = dev_get_drvdata(dev);
struct w100fb_par *par=info->par;
w100_resume();
w100fb_restore_buffer();
lcdtg_resume();
par->blanking_flag = 0;
}
return 0;
}
#else
#define w100fb_suspend NULL
#define w100fb_resume NULL
#endif
int __init w100fb_probe(struct device *dev)
{
struct w100fb_mach_info *inf;
struct fb_info *info;
struct w100fb_par *par;
struct platform_device *pdev = to_platform_device(dev);
struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!mem)
return -EINVAL;
/* remap the areas we're going to use */
remapped_base = ioremap_nocache(mem->start+W100_CFG_BASE, W100_CFG_LEN);
if (remapped_base == NULL)
return -EIO;
remapped_regs = ioremap_nocache(mem->start+W100_REG_BASE, W100_REG_LEN);
if (remapped_regs == NULL) {
iounmap(remapped_base);
return -EIO;
}
remapped_fbuf = ioremap_nocache(mem->start+MEM_EXT_BASE_VALUE, REMAPPED_FB_LEN);
if (remapped_fbuf == NULL) {
iounmap(remapped_base);
iounmap(remapped_regs);
return -EIO;
}
info=framebuffer_alloc(sizeof(struct w100fb_par), dev);
if (!info) {
iounmap(remapped_base);
iounmap(remapped_regs);
iounmap(remapped_fbuf);
return -ENOMEM;
}
info->device=dev;
par = info->par;
current_par=info->par;
dev_set_drvdata(dev, info);
inf = dev->platform_data;
par->phadadj = inf->phadadj;
par->comadj = inf->comadj;
par->fastsysclk_mode = 75;
par->lcdMode = LCD_MODE_INIT;
par->rotation_flag=0;
par->blanking_flag=0;
w100fb_ssp_send = inf->w100fb_ssp_send;
w100_hw_init();
w100_pwm_setup();
info->pseudo_palette = kmalloc(sizeof (u32) * MAX_PALETTES, GFP_KERNEL);
if (!info->pseudo_palette) {
iounmap(remapped_base);
iounmap(remapped_regs);
iounmap(remapped_fbuf);
return -ENOMEM;
}
info->fbops = &w100fb_ops;
info->flags = FBINFO_DEFAULT;
info->node = -1;
info->screen_base = remapped_fbuf;
info->screen_size = REMAPPED_FB_LEN;
info->var.xres = 640;
info->var.xres_virtual = info->var.xres;
info->var.yres = 480;
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;
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+MEM_EXT_BASE_VALUE;
info->fix.mmio_start = mem->start+W100_REG_BASE;
info->fix.mmio_len = W100_REG_LEN;
w100fb_check_var(&info->var, info);
w100fb_set_par(info);
if (register_framebuffer(info) < 0) {
kfree(info->pseudo_palette);
iounmap(remapped_base);
iounmap(remapped_regs);
iounmap(remapped_fbuf);
return -EINVAL;
}
device_create_file(dev, &dev_attr_fastsysclk);
device_create_file(dev, &dev_attr_reg_read);
device_create_file(dev, &dev_attr_reg_write);
device_create_file(dev, &dev_attr_rotation);
printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id);
return 0;
}
static int w100fb_remove(struct device *dev)
{
struct fb_info *info = dev_get_drvdata(dev);
device_remove_file(dev, &dev_attr_fastsysclk);
device_remove_file(dev, &dev_attr_reg_read);
device_remove_file(dev, &dev_attr_reg_write);
device_remove_file(dev, &dev_attr_rotation);
unregister_framebuffer(info);
w100fb_clear_buffer();
kfree(info->pseudo_palette);
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);
}
/*
* Initialization of critical w100 hardware
*/
static void w100_hw_init(void)
{
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 mc_ext_mem_location_u mc_ext_mem_loc;
union cif_io_u cif_io;
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);
/* This location is relative to internal w100 addresses */
writel(0x15FF1000, remapped_regs + mmMC_FB_LOCATION);
mc_ext_mem_loc.val = defMC_EXT_MEM_LOCATION;
mc_ext_mem_loc.f.mc_ext_mem_start = MEM_EXT_BASE_VALUE >> 8;
mc_ext_mem_loc.f.mc_ext_mem_top = MEM_EXT_TOP_VALUE >> 8;
writel((u32) (mc_ext_mem_loc.val), remapped_regs + mmMC_EXT_MEM_LOCATION);
if ((current_par->lcdMode == LCD_MODE_240) || (current_par->lcdMode == LCD_MODE_320))
w100_InitExtMem(LCD_SHARP_QVGA);
else
w100_InitExtMem(LCD_SHARP_VGA);
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);
}
/*
* Types
*/
struct pll_parm {
u16 freq; /* desired Fout for PLL */
u8 M;
u8 N_int;
u8 N_fac;
u8 tfgoal;
u8 lock_time;
};
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 clk_test_cntl_u clk_test_cntl;
union pwrmgt_cntl_u pwrmgt_cntl;
u32 freq; /* Fout for PLL calibration */
u8 tf100; /* for pll calibration */
u8 tf80; /* for pll calibration */
u8 tf20; /* for pll calibration */
u8 M; /* for pll calibration */
u8 N_int; /* for pll calibration */
u8 N_fac; /* for pll calibration */
u8 lock_time; /* for pll calibration */
u8 tfgoal; /* for pll calibration */
u8 auto_mode; /* hardware auto switch? */
u8 pwm_mode; /* 0 fast, 1 normal/slow */
u16 fast_sclk; /* fast clk freq */
u16 norm_sclk; /* slow clk freq */
};
/*
* Global state variables
*/
static struct power_state w100_pwr_state;
/* This table is specific for 12.5MHz ref crystal. */
static struct pll_parm gPLLTable[] = {
/*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 */
};
static u8 w100_pll_get_testcount(u8 testclk_sel)
{
udelay(5);
w100_pwr_state.clk_test_cntl.f.start_check_freq = 0x0;
w100_pwr_state.clk_test_cntl.f.testclk_sel = testclk_sel;
w100_pwr_state.clk_test_cntl.f.tstcount_rst = 0x1; /*reset test count */
writel((u32) (w100_pwr_state.clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
w100_pwr_state.clk_test_cntl.f.tstcount_rst = 0x0;
writel((u32) (w100_pwr_state.clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
w100_pwr_state.clk_test_cntl.f.start_check_freq = 0x1;
writel((u32) (w100_pwr_state.clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
udelay(20);
w100_pwr_state.clk_test_cntl.val = readl(remapped_regs + mmCLK_TEST_CNTL);
w100_pwr_state.clk_test_cntl.f.start_check_freq = 0x0;
writel((u32) (w100_pwr_state.clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
return w100_pwr_state.clk_test_cntl.f.test_count;
}
static u8 w100_pll_adjust(void)
{
do {
/* 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
* 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);
w100_pwr_state.tf80 = w100_pll_get_testcount(0x1); /* PLLCLK */
if (w100_pwr_state.tf80 >= (w100_pwr_state.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);
w100_pwr_state.tf20 = w100_pll_get_testcount(0x1); /* PLLCLK */
if (w100_pwr_state.tf20 <= (w100_pwr_state.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;
writel((u32) (w100_pwr_state.pll_cntl.val),
remapped_regs + mmPLL_CNTL);
continue;
}
}
if ((w100_pwr_state.pll_cntl.f.pll_ioffset) < 0x3) {
w100_pwr_state.pll_cntl.f.pll_ioffset += 0x1;
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
continue;
}
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;
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
continue;
}
return 0; // error
} while(1);
}
/*
* w100_pll_calibration
* freq = target frequency of the PLL
* (note: crystal = 14.3MHz)
*/
static u8 w100_pll_calibration(u32 freq)
{
u8 status;
/* initial setting */
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;
writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
/* check for (tf80 >= tfgoal) && (tf20 =< tfgoal) */
if ((w100_pwr_state.tf80 < w100_pwr_state.tfgoal) || (w100_pwr_state.tf20 > w100_pwr_state.tfgoal)) {
status=w100_pll_adjust();
}
/* 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);
/* reset time */
udelay(1);
/* 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);
/* lock time */
udelay(400); /* delay 400 us */
/* PLL locked */
w100_pwr_state.sclk_cntl.f.sclk_src_sel = 0x1; /* PLL clock */
writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
w100_pwr_state.tf100 = w100_pll_get_testcount(0x1); /* PLLCLK */
return status;
}
static u8 w100_pll_set_clk(void)
{
u8 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);
}
w100_pwr_state.sclk_cntl.f.sclk_src_sel = 0x0; /* crystal clock */
writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
w100_pwr_state.pll_ref_fb_div.f.pll_ref_div = w100_pwr_state.M;
w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_int = w100_pwr_state.N_int;
w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_frac = w100_pwr_state.N_fac;
w100_pwr_state.pll_ref_fb_div.f.pll_lock_time = w100_pwr_state.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 (w100_pwr_state.freq);
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;
}
/* assume reference crystal clk is 12.5MHz,
* and that doubling is not enabled.
*
* Freq = 12 == 12.5MHz.
*/
static u16 w100_set_slowsysclk(u16 freq)
{
if (w100_pwr_state.norm_sclk == freq)
return freq;
if (w100_pwr_state.auto_mode == 1) /* auto mode */
return 0;
if (freq == 12) {
w100_pwr_state.norm_sclk = freq;
w100_pwr_state.sclk_cntl.f.sclk_post_div_slow = 0x0; /* Pslow = 1 */
w100_pwr_state.sclk_cntl.f.sclk_src_sel = 0x0; /* crystal src */
writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
w100_pwr_state.clk_pin_cntl.f.xtalin_pm_en = 0x1;
writel((u32) (w100_pwr_state.clk_pin_cntl.val), remapped_regs + mmCLK_PIN_CNTL);
w100_pwr_state.pwrmgt_cntl.f.pwm_enable = 0x1;
w100_pwr_state.pwrmgt_cntl.f.pwm_mode_req = 0x1;
writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
w100_pwr_state.pwm_mode = 1; /* normal mode */
return freq;
} else
return 0;
}
static u16 w100_set_fastsysclk(u16 freq)
{
u16 pll_freq;
int i;
while(1) {
pll_freq = (u16) (freq * (w100_pwr_state.sclk_cntl.f.sclk_post_div_fast + 1));
i = 0;
do {
if (pll_freq == gPLLTable[i].freq) {
w100_pwr_state.freq = gPLLTable[i].freq * 1000000;
w100_pwr_state.M = gPLLTable[i].M;
w100_pwr_state.N_int = gPLLTable[i].N_int;
w100_pwr_state.N_fac = gPLLTable[i].N_fac;
w100_pwr_state.tfgoal = gPLLTable[i].tfgoal;
w100_pwr_state.lock_time = gPLLTable[i].lock_time;
w100_pwr_state.tf20 = 0xff; /* set highest */
w100_pwr_state.tf80 = 0x00; /* set lowest */
w100_pll_set_clk();
w100_pwr_state.pwm_mode = 0; /* fast mode */
w100_pwr_state.fast_sclk = freq;
return freq;
}
i++;
} while(gPLLTable[i].freq);
if (w100_pwr_state.auto_mode == 1)
break;
if (w100_pwr_state.sclk_cntl.f.sclk_post_div_fast == 0)
break;
w100_pwr_state.sclk_cntl.f.sclk_post_div_fast -= 1;
writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
}
return 0;
}
/* Set up an initial state. Some values/fields set
here will be overwritten. */
static void w100_pwm_setup(void)
{
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 = 0x0; /* no freq doubling */
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 = 0x0; /* Crystal Clk */
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 = 0x0; /* Crystal Clk */
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.clk_test_cntl.f.testclk_sel = 0x1; /* PLLCLK (for testing) */
w100_pwr_state.clk_test_cntl.f.start_check_freq = 0x0;
w100_pwr_state.clk_test_cntl.f.tstcount_rst = 0x0;
writel((u32) (w100_pwr_state.clk_test_cntl.val), remapped_regs + mmCLK_TEST_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 */
w100_pwr_state.pwm_mode = 1; /* normal mode (0, 1, 2) */
w100_pwr_state.freq = 50000000; /* 50 MHz */
w100_pwr_state.M = 3; /* M = 4 */
w100_pwr_state.N_int = 6; /* N = 7.0 */
w100_pwr_state.N_fac = 0;
w100_pwr_state.tfgoal = 0xE0;
w100_pwr_state.lock_time = 56;
w100_pwr_state.tf20 = 0xff; /* set highest */
w100_pwr_state.tf80 = 0x00; /* set lowest */
w100_pwr_state.tf100 = 0x00; /* set lowest */
w100_pwr_state.fast_sclk = 50; /* 50.0 MHz */
w100_pwr_state.norm_sclk = 12; /* 12.5 MHz */
}
static void w100_init_sharp_lcd(u32 mode)
{
u32 temp32;
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);
switch(mode) {
case LCD_SHARP_QVGA:
w100_set_slowsysclk(12); /* use crystal -- 12.5MHz */
/* not use PLL */
writel(0x7FFF8000, remapped_regs + mmMC_EXT_MEM_LOCATION);
writel(0x85FF8000, remapped_regs + mmMC_FB_LOCATION);
writel(0x00000003, remapped_regs + mmLCD_FORMAT);
writel(0x00CF1C06, remapped_regs + mmGRAPHIC_CTRL);
writel(0x01410145, remapped_regs + mmCRTC_TOTAL);
writel(0x01170027, remapped_regs + mmACTIVE_H_DISP);
writel(0x01410001, remapped_regs + mmACTIVE_V_DISP);
writel(0x01170027, remapped_regs + mmGRAPHIC_H_DISP);
writel(0x01410001, remapped_regs + mmGRAPHIC_V_DISP);
writel(0x81170027, remapped_regs + mmCRTC_SS);
writel(0xA0140000, remapped_regs + mmCRTC_LS);
writel(0x00400008, remapped_regs + mmCRTC_REV);
writel(0xA0000000, remapped_regs + mmCRTC_DCLK);
writel(0xC0140014, remapped_regs + mmCRTC_GS);
writel(0x00010141, remapped_regs + mmCRTC_VPOS_GS);
writel(0x8015010F, remapped_regs + mmCRTC_GCLK);
writel(0x80100110, remapped_regs + mmCRTC_GOE);
writel(0x00000000, remapped_regs + mmCRTC_FRAME);
writel(0x00000000, remapped_regs + mmCRTC_FRAME_VPOS);
writel(0x01CC0000, remapped_regs + mmLCDD_CNTL1);
writel(0x0003FFFF, remapped_regs + mmLCDD_CNTL2);
writel(0x00FFFF0D, remapped_regs + mmGENLCD_CNTL1);
writel(0x003F3003, remapped_regs + mmGENLCD_CNTL2);
writel(0x00000000, remapped_regs + mmCRTC_DEFAULT_COUNT);
writel(0x0000FF00, remapped_regs + mmLCD_BACKGROUND_COLOR);
writel(0x000102aa, remapped_regs + mmGENLCD_CNTL3);
writel(0x00800000, remapped_regs + mmGRAPHIC_OFFSET);
writel(0x000001e0, remapped_regs + mmGRAPHIC_PITCH);
writel(0x000000bf, remapped_regs + mmGPIO_DATA);
writel(0x03c0feff, remapped_regs + mmGPIO_CNTL2);
writel(0x00000000, remapped_regs + mmGPIO_CNTL1);
writel(0x41060010, remapped_regs + mmCRTC_PS1_ACTIVE);
break;
case LCD_SHARP_VGA:
w100_set_slowsysclk(12); /* use crystal -- 12.5MHz */
w100_set_fastsysclk(current_par->fastsysclk_mode); /* use PLL -- 75.0MHz */
w100_pwr_state.pclk_cntl.f.pclk_src_sel = 0x1;
w100_pwr_state.pclk_cntl.f.pclk_post_div = 0x2;
writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL);
writel(0x15FF1000, remapped_regs + mmMC_FB_LOCATION);
writel(0x9FFF8000, remapped_regs + mmMC_EXT_MEM_LOCATION);
writel(0x00000003, remapped_regs + mmLCD_FORMAT);
writel(0x00DE1D66, remapped_regs + mmGRAPHIC_CTRL);
writel(0x0283028B, remapped_regs + mmCRTC_TOTAL);
writel(0x02360056, remapped_regs + mmACTIVE_H_DISP);
writel(0x02830003, remapped_regs + mmACTIVE_V_DISP);
writel(0x02360056, remapped_regs + mmGRAPHIC_H_DISP);
writel(0x02830003, remapped_regs + mmGRAPHIC_V_DISP);
writel(0x82360056, remapped_regs + mmCRTC_SS);
writel(0xA0280000, remapped_regs + mmCRTC_LS);
writel(0x00400008, remapped_regs + mmCRTC_REV);
writel(0xA0000000, remapped_regs + mmCRTC_DCLK);
writel(0x80280028, remapped_regs + mmCRTC_GS);
writel(0x02830002, remapped_regs + mmCRTC_VPOS_GS);
writel(0x8015010F, remapped_regs + mmCRTC_GCLK);
writel(0x80100110, remapped_regs + mmCRTC_GOE);
writel(0x00000000, remapped_regs + mmCRTC_FRAME);
writel(0x00000000, remapped_regs + mmCRTC_FRAME_VPOS);
writel(0x01CC0000, remapped_regs + mmLCDD_CNTL1);
writel(0x0003FFFF, remapped_regs + mmLCDD_CNTL2);
writel(0x00FFFF0D, remapped_regs + mmGENLCD_CNTL1);
writel(0x003F3003, remapped_regs + mmGENLCD_CNTL2);
writel(0x00000000, remapped_regs + mmCRTC_DEFAULT_COUNT);
writel(0x0000FF00, remapped_regs + mmLCD_BACKGROUND_COLOR);
writel(0x000102aa, remapped_regs + mmGENLCD_CNTL3);
writel(0x00800000, remapped_regs + mmGRAPHIC_OFFSET);
writel(0x000003C0, remapped_regs + mmGRAPHIC_PITCH);
writel(0x000000bf, remapped_regs + mmGPIO_DATA);
writel(0x03c0feff, remapped_regs + mmGPIO_CNTL2);
writel(0x00000000, remapped_regs + mmGPIO_CNTL1);
writel(0x41060010, remapped_regs + mmCRTC_PS1_ACTIVE);
break;
default:
break;
}
/* Hack for overlay in ext memory */
temp32 = readl(remapped_regs + mmDISP_DEBUG2);
temp32 |= 0xc0000000;
writel(temp32, remapped_regs + mmDISP_DEBUG2);
/* Re-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);
}
static void w100_set_vga_rotation_regs(u16 divider, unsigned long ctrl, unsigned long offset, unsigned long pitch)
{
w100_pwr_state.pclk_cntl.f.pclk_src_sel = 0x1;
w100_pwr_state.pclk_cntl.f.pclk_post_div = divider;
writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL);
writel(ctrl, remapped_regs + mmGRAPHIC_CTRL);
writel(offset, remapped_regs + mmGRAPHIC_OFFSET);
writel(pitch, remapped_regs + mmGRAPHIC_PITCH);
/* Re-enable display updates */
writel(0x0000007b, remapped_regs + mmDISP_DB_BUF_CNTL);
}
static void w100_init_vga_rotation(u16 deg)
{
switch(deg) {
case 0:
w100_set_vga_rotation_regs(0x02, 0x00DE1D66, 0x00800000, 0x000003c0);
break;
case 90:
w100_set_vga_rotation_regs(0x06, 0x00DE1D0e, 0x00895b00, 0x00000500);
break;
case 180:
w100_set_vga_rotation_regs(0x02, 0x00DE1D7e, 0x00895ffc, 0x000003c0);
break;
case 270:
w100_set_vga_rotation_regs(0x06, 0x00DE1D16, 0x008004fc, 0x00000500);
break;
default:
/* not-support */
break;
}
}
static void w100_set_qvga_rotation_regs(unsigned long ctrl, unsigned long offset, unsigned long pitch)
{
writel(ctrl, remapped_regs + mmGRAPHIC_CTRL);
writel(offset, remapped_regs + mmGRAPHIC_OFFSET);
writel(pitch, remapped_regs + mmGRAPHIC_PITCH);
/* Re-enable display updates */
writel(0x0000007b, remapped_regs + mmDISP_DB_BUF_CNTL);
}
static void w100_init_qvga_rotation(u16 deg)
{
switch(deg) {
case 0:
w100_set_qvga_rotation_regs(0x00d41c06, 0x00800000, 0x000001e0);
break;
case 90:
w100_set_qvga_rotation_regs(0x00d41c0E, 0x00825580, 0x00000280);
break;
case 180:
w100_set_qvga_rotation_regs(0x00d41c1e, 0x008257fc, 0x000001e0);
break;
case 270:
w100_set_qvga_rotation_regs(0x00d41c16, 0x0080027c, 0x00000280);
break;
default:
/* not-support */
break;
}
}
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(0x0000001d, remapped_regs + mmPWRMGT_CNTL);
}
}
static void w100_resume(void)
{
u32 temp32;
w100_hw_init();
w100_pwm_setup();
temp32 = readl(remapped_regs + mmDISP_DEBUG2);
temp32 &= 0xff7fffff;
temp32 |= 0x00800000;
writel(temp32, remapped_regs + mmDISP_DEBUG2);
if (current_par->lcdMode == LCD_MODE_480 || current_par->lcdMode == LCD_MODE_640) {
w100_init_sharp_lcd(LCD_SHARP_VGA);
if (current_par->lcdMode == LCD_MODE_640) {
w100_init_vga_rotation(current_par->rotation_flag ? 270 : 90);
}
} else {
w100_init_sharp_lcd(LCD_SHARP_QVGA);
if (current_par->lcdMode == LCD_MODE_320) {
w100_init_qvga_rotation(current_par->rotation_flag ? 270 : 90);
}
}
}
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 void w100_InitExtMem(u32 mode)
{
switch(mode) {
case LCD_SHARP_QVGA:
/* QVGA doesn't use external memory
nothing to do, really. */
break;
case LCD_SHARP_VGA:
writel(0x00007800, remapped_regs + mmMC_BIST_CTRL);
writel(0x00040003, 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(0x00650021, remapped_regs + mmMEM_SDRAM_MODE_REG);
udelay(100);
writel(0x10002a4a, remapped_regs + mmMEM_EXT_TIMING_CNTL);
writel(0x7ff87012, remapped_regs + mmMEM_IO_CNTL);
break;
default:
break;
}
}
#define RESCTL_ADRS 0x00
#define PHACTRL_ADRS 0x01
#define DUTYCTRL_ADRS 0x02
#define POWERREG0_ADRS 0x03
#define POWERREG1_ADRS 0x04
#define GPOR3_ADRS 0x05
#define PICTRL_ADRS 0x06
#define POLCTRL_ADRS 0x07
#define RESCTL_QVGA 0x01
#define RESCTL_VGA 0x00
#define POWER1_VW_ON 0x01 /* VW Supply FET ON */
#define POWER1_GVSS_ON 0x02 /* GVSS(-8V) Power Supply ON */
#define POWER1_VDD_ON 0x04 /* VDD(8V),SVSS(-4V) Power Supply ON */
#define POWER1_VW_OFF 0x00 /* VW Supply FET OFF */
#define POWER1_GVSS_OFF 0x00 /* GVSS(-8V) Power Supply OFF */
#define POWER1_VDD_OFF 0x00 /* VDD(8V),SVSS(-4V) Power Supply OFF */
#define POWER0_COM_DCLK 0x01 /* COM Voltage DC Bias DAC Serial Data Clock */
#define POWER0_COM_DOUT 0x02 /* COM Voltage DC Bias DAC Serial Data Out */
#define POWER0_DAC_ON 0x04 /* DAC Power Supply ON */
#define POWER0_COM_ON 0x08 /* COM Powewr Supply ON */
#define POWER0_VCC5_ON 0x10 /* VCC5 Power Supply ON */
#define POWER0_DAC_OFF 0x00 /* DAC Power Supply OFF */
#define POWER0_COM_OFF 0x00 /* COM Powewr Supply OFF */
#define POWER0_VCC5_OFF 0x00 /* VCC5 Power Supply OFF */
#define PICTRL_INIT_STATE 0x01
#define PICTRL_INIOFF 0x02
#define PICTRL_POWER_DOWN 0x04
#define PICTRL_COM_SIGNAL_OFF 0x08
#define PICTRL_DAC_SIGNAL_OFF 0x10
#define PICTRL_POWER_ACTIVE (0)
#define POLCTRL_SYNC_POL_FALL 0x01
#define POLCTRL_EN_POL_FALL 0x02
#define POLCTRL_DATA_POL_FALL 0x04
#define POLCTRL_SYNC_ACT_H 0x08
#define POLCTRL_EN_ACT_L 0x10
#define POLCTRL_SYNC_POL_RISE 0x00
#define POLCTRL_EN_POL_RISE 0x00
#define POLCTRL_DATA_POL_RISE 0x00
#define POLCTRL_SYNC_ACT_L 0x00
#define POLCTRL_EN_ACT_H 0x00
#define PHACTRL_PHASE_MANUAL 0x01
#define PHAD_QVGA_DEFAULT_VAL (9)
#define COMADJ_DEFAULT (125)
static void lcdtg_ssp_send(u8 adrs, u8 data)
{
w100fb_ssp_send(adrs,data);
}
/*
* This is only a psuedo I2C interface. We can't use the standard kernel
* routines as the interface is write only. We just assume the data is acked...
*/
static void lcdtg_ssp_i2c_send(u8 data)
{
lcdtg_ssp_send(POWERREG0_ADRS, data);
udelay(10);
}
static void lcdtg_i2c_send_bit(u8 data)
{
lcdtg_ssp_i2c_send(data);
lcdtg_ssp_i2c_send(data | POWER0_COM_DCLK);
lcdtg_ssp_i2c_send(data);
}
static void lcdtg_i2c_send_start(u8 base)
{
lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK | POWER0_COM_DOUT);
lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK);
lcdtg_ssp_i2c_send(base);
}
static void lcdtg_i2c_send_stop(u8 base)
{
lcdtg_ssp_i2c_send(base);
lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK);
lcdtg_ssp_i2c_send(base | POWER0_COM_DCLK | POWER0_COM_DOUT);
}
static void lcdtg_i2c_send_byte(u8 base, u8 data)
{
int i;
for (i = 0; i < 8; i++) {
if (data & 0x80)
lcdtg_i2c_send_bit(base | POWER0_COM_DOUT);
else
lcdtg_i2c_send_bit(base);
data <<= 1;
}
}
static void lcdtg_i2c_wait_ack(u8 base)
{
lcdtg_i2c_send_bit(base);
}
static void lcdtg_set_common_voltage(u8 base_data, u8 data)
{
/* Set Common Voltage to M62332FP via I2C */
lcdtg_i2c_send_start(base_data);
lcdtg_i2c_send_byte(base_data, 0x9c);
lcdtg_i2c_wait_ack(base_data);
lcdtg_i2c_send_byte(base_data, 0x00);
lcdtg_i2c_wait_ack(base_data);
lcdtg_i2c_send_byte(base_data, data);
lcdtg_i2c_wait_ack(base_data);
lcdtg_i2c_send_stop(base_data);
}
static struct lcdtg_register_setting {
u8 adrs;
u8 data;
u32 wait;
} lcdtg_power_on_table[] = {
/* Initialize Internal Logic & Port */
{ PICTRL_ADRS,
PICTRL_POWER_DOWN | PICTRL_INIOFF | PICTRL_INIT_STATE |
PICTRL_COM_SIGNAL_OFF | PICTRL_DAC_SIGNAL_OFF,
0 },
{ POWERREG0_ADRS,
POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_OFF | POWER0_COM_OFF |
POWER0_VCC5_OFF,
0 },
{ POWERREG1_ADRS,
POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_OFF,
0 },
/* VDD(+8V),SVSS(-4V) ON */
{ POWERREG1_ADRS,
POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_ON /* VDD ON */,
3000 },
/* DAC ON */
{ POWERREG0_ADRS,
POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON /* DAC ON */ |
POWER0_COM_OFF | POWER0_VCC5_OFF,
0 },
/* INIB = H, INI = L */
{ PICTRL_ADRS,
/* PICTL[0] = H , PICTL[1] = PICTL[2] = PICTL[4] = L */
PICTRL_INIT_STATE | PICTRL_COM_SIGNAL_OFF,
0 },
/* Set Common Voltage */
{ 0xfe, 0, 0 },
/* VCC5 ON */
{ POWERREG0_ADRS,
POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON /* DAC ON */ |
POWER0_COM_OFF | POWER0_VCC5_ON /* VCC5 ON */,
0 },
/* GVSS(-8V) ON */
{ POWERREG1_ADRS,
POWER1_VW_OFF | POWER1_GVSS_ON /* GVSS ON */ |
POWER1_VDD_ON /* VDD ON */,
2000 },
/* COM SIGNAL ON (PICTL[3] = L) */
{ PICTRL_ADRS,
PICTRL_INIT_STATE,
0 },
/* COM ON */
{ POWERREG0_ADRS,
POWER0_COM_DCLK | POWER0_COM_DOUT | POWER0_DAC_ON /* DAC ON */ |
POWER0_COM_ON /* COM ON */ | POWER0_VCC5_ON /* VCC5_ON */,
0 },
/* VW ON */
{ POWERREG1_ADRS,
POWER1_VW_ON /* VW ON */ | POWER1_GVSS_ON /* GVSS ON */ |
POWER1_VDD_ON /* VDD ON */,
0 /* Wait 100ms */ },
/* Signals output enable */
{ PICTRL_ADRS,
0 /* Signals output enable */,
0 },
{ PHACTRL_ADRS,
PHACTRL_PHASE_MANUAL,
0 },
/* Initialize for Input Signals from ATI */
{ POLCTRL_ADRS,
POLCTRL_SYNC_POL_RISE | POLCTRL_EN_POL_RISE | POLCTRL_DATA_POL_RISE |
POLCTRL_SYNC_ACT_L | POLCTRL_EN_ACT_H,
1000 /*100000*/ /* Wait 100ms */ },
/* end mark */
{ 0xff, 0, 0 }
};
static void lcdtg_resume(void)
{
if (current_par->lcdMode == LCD_MODE_480 || current_par->lcdMode == LCD_MODE_640) {
lcdtg_hw_init(LCD_SHARP_VGA);
} else {
lcdtg_hw_init(LCD_SHARP_QVGA);
}
}
static void lcdtg_suspend(void)
{
int i;
for (i = 0; i < (current_par->xres * current_par->yres); i++) {
writew(0xffff, remapped_fbuf + (2*i));
}
/* 60Hz x 2 frame = 16.7msec x 2 = 33.4 msec */
mdelay(34);
/* (1)VW OFF */
lcdtg_ssp_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_ON | POWER1_VDD_ON);
/* (2)COM OFF */
lcdtg_ssp_send(PICTRL_ADRS, PICTRL_COM_SIGNAL_OFF);
lcdtg_ssp_send(POWERREG0_ADRS, POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_ON);
/* (3)Set Common Voltage Bias 0V */
lcdtg_set_common_voltage(POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_ON, 0);
/* (4)GVSS OFF */
lcdtg_ssp_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_ON);
/* (5)VCC5 OFF */
lcdtg_ssp_send(POWERREG0_ADRS, POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_OFF);
/* (6)Set PDWN, INIOFF, DACOFF */
lcdtg_ssp_send(PICTRL_ADRS, PICTRL_INIOFF | PICTRL_DAC_SIGNAL_OFF |
PICTRL_POWER_DOWN | PICTRL_COM_SIGNAL_OFF);
/* (7)DAC OFF */
lcdtg_ssp_send(POWERREG0_ADRS, POWER0_DAC_OFF | POWER0_COM_OFF | POWER0_VCC5_OFF);
/* (8)VDD OFF */
lcdtg_ssp_send(POWERREG1_ADRS, POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_OFF);
}
static void lcdtg_set_phadadj(u32 mode)
{
int adj;
if (mode == LCD_SHARP_VGA) {
/* Setting for VGA */
adj = current_par->phadadj;
if (adj < 0) {
adj = PHACTRL_PHASE_MANUAL;
} else {
adj = ((adj & 0x0f) << 1) | PHACTRL_PHASE_MANUAL;
}
} else {
/* Setting for QVGA */
adj = (PHAD_QVGA_DEFAULT_VAL << 1) | PHACTRL_PHASE_MANUAL;
}
lcdtg_ssp_send(PHACTRL_ADRS, adj);
}
static void lcdtg_hw_init(u32 mode)
{
int i;
int comadj;
i = 0;
while(lcdtg_power_on_table[i].adrs != 0xff) {
if (lcdtg_power_on_table[i].adrs == 0xfe) {
/* Set Common Voltage */
comadj = current_par->comadj;
if (comadj < 0) {
comadj = COMADJ_DEFAULT;
}
lcdtg_set_common_voltage((POWER0_DAC_ON | POWER0_COM_OFF | POWER0_VCC5_OFF), comadj);
} else if (lcdtg_power_on_table[i].adrs == PHACTRL_ADRS) {
/* Set Phase Adjuct */
lcdtg_set_phadadj(mode);
} else {
/* Other */
lcdtg_ssp_send(lcdtg_power_on_table[i].adrs, lcdtg_power_on_table[i].data);
}
if (lcdtg_power_on_table[i].wait != 0)
udelay(lcdtg_power_on_table[i].wait);
i++;
}
switch(mode) {
case LCD_SHARP_QVGA:
/* Set Lcd Resolution (QVGA) */
lcdtg_ssp_send(RESCTL_ADRS, RESCTL_QVGA);
break;
case LCD_SHARP_VGA:
/* Set Lcd Resolution (VGA) */
lcdtg_ssp_send(RESCTL_ADRS, RESCTL_VGA);
break;
default:
break;
}
}
static void lcdtg_lcd_change(u32 mode)
{
/* Set Phase Adjuct */
lcdtg_set_phadadj(mode);
if (mode == LCD_SHARP_VGA)
/* Set Lcd Resolution (VGA) */
lcdtg_ssp_send(RESCTL_ADRS, RESCTL_VGA);
else if (mode == LCD_SHARP_QVGA)
/* Set Lcd Resolution (QVGA) */
lcdtg_ssp_send(RESCTL_ADRS, RESCTL_QVGA);
}
static struct device_driver w100fb_driver = {
.name = "w100fb",
.bus = &platform_bus_type,
.probe = w100fb_probe,
.remove = w100fb_remove,
.suspend = w100fb_suspend,
.resume = w100fb_resume,
};
int __devinit w100fb_init(void)
{
return driver_register(&w100fb_driver);
}
void __exit w100fb_cleanup(void)
{
driver_unregister(&w100fb_driver);
}
module_init(w100fb_init);
module_exit(w100fb_cleanup);
MODULE_DESCRIPTION("ATI Imageon w100 framebuffer driver");
MODULE_LICENSE("GPLv2");
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