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/*
* linux/drivers/video/voyager_crtcsrfb.c -- voyager crt HWC frame buffer driver
*
* Copyright (C) 2003 Renesas Technology Sales Co.,Ltd.
* Copyright (C) 2003 Atom Create Engineering Co.,Ltd.
* Anthor : Atom Create Engineering Co.,Ltd.
* Kenichi Sakuma
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*
* 1.00
* - initial version (ks)
* 1.01
* - Kernel 2.6 correspondence
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/mach/voyagergx_reg.h>
#include <video/voyager.h>
static struct fb_info voyafb_info;
int voyafb_init7(void);
static int voyafb_check_var(struct fb_var_screeninfo *var,
struct fb_info *info);
static int voyafb_set_par(struct fb_info *info);
static int voyafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
u_int transp, struct fb_info *info);
static int voyafb_blank(int blank, struct fb_info *info);
static int voyafb_ioctl(struct inode*, struct file*,
unsigned int, unsigned long, struct fb_info*);
static int change_mode(struct fb_var_screeninfo *var);
static unsigned int pseudo_palette[16];
static struct fb_ops voyafb_ops = {
.owner = THIS_MODULE,
.fb_check_var = voyafb_check_var,
.fb_set_par = voyafb_set_par,
.fb_setcolreg = voyafb_setcolreg,
.fb_blank = voyafb_blank,
.fb_fillrect = cfb_fillrect,
.fb_copyarea = cfb_copyarea,
.fb_imageblit = cfb_imageblit,
.fb_ioctl = voyafb_ioctl,
};
static struct fb_var_screeninfo voyafb_var __initdata = {
.xres = CSR_XRES,
.yres = CSR_YRES,
.xres_virtual = CSR_XRES,
.yres_virtual = CSR_YRES,
.bits_per_pixel = CSR_BPP,
.red = { 11,5,0 },
.green = { 5,6,0 },
.blue = { 0,5,0 },
.height = -1,
.width = -1,
.vmode = FB_VMODE_NONINTERLACED,
.pixclock = 10000,
.left_margin = 16,
.right_margin = 16,
.upper_margin = 16,
.lower_margin = 16,
.hsync_len = 8,
.vsync_len = 8,
};
static int voyafb_check_var(struct fb_var_screeninfo *var,
struct fb_info *info)
{
if (var->xres > CSR_XRES || var->yres > CSR_YRES
|| var->xres_virtual > CSR_XRES || var->yres_virtual > CSR_YRES
|| var->bits_per_pixel != CSR_BPP
|| var->nonstd
|| (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
return -EINVAL;
var->xres = var->xres_virtual = CSR_XRES;
var->yres = var->yres_virtual = CSR_YRES;
if(change_mode(var) != 0) {
return -EINVAL;
}
return 0;
}
static int voyafb_set_par(struct fb_info *info)
{
info->fix.line_length = CSR_XRES/2;
info->fix.visual = FB_VISUAL_TRUECOLOR;
info->var.red.offset = 11;
info->var.green.offset = 5;
info->var.blue.offset = 0;
info->var.red.length = info->var.blue.length = 5;
info->var.green.length = 6;
return 0;
}
static int voyafb_blank(int blank, struct fb_info *info)
{
return 1;
}
static int voyafb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp,
struct fb_info* info)
{
red >>= 11;
green >>= 11;
blue >>= 10;
if (regno < 16)
((u32 *)(info->pseudo_palette))[regno] = ((red & 31) << 6) |
((green & 31) << 11) |
((blue & 63));
return 0;
}
static int voyafb_ioctl(struct inode* inode, struct file* file,
unsigned int cmd, unsigned long arg,
struct fb_info* info)
{
if(cmd == VOYAGER_IOCTL_ENABLE) {
if(arg == 0) {
*(volatile unsigned long *)(CRT_HWC_ADDRESS) &= 0x7fffffff;
}
else {
*(volatile unsigned long *)(CRT_HWC_ADDRESS) |= 0x80000000;
}
return 0;
}
else if(cmd == VOYAGER_IOCTL_COLOR_1) {
*(volatile unsigned long *)(CRT_HWC_COLOR_12) = arg;
return 0;
}
else if(cmd == VOYAGER_IOCTL_COLOR_2) {
*(volatile unsigned long *)(CRT_HWC_COLOR_3) = arg;
return 0;
}
return -EINVAL;
}
static void __init voya_hw_init(void)
{
*(volatile unsigned long *)(CRT_HWC_ADDRESS) = (VOY_VRAM_TOP5 & 0x00ffffff);
*(volatile unsigned long *)(CRT_HWC_COLOR_12) = 0x5555aaaa;
*(volatile unsigned long *)(CRT_HWC_COLOR_3) = 0x0000ffff;
change_mode(&voyafb_var);
}
static struct fb_fix_screeninfo voyafb_fix __initdata = {
.id = "VOYAGER C_CSR",
.type = FB_TYPE_PACKED_PIXELS,
.visual = FB_VISUAL_TRUECOLOR,
.accel = FB_ACCEL_NONE,
.line_length = CSR_XRES/2,
.smem_len = MAX_HWC_MEM_SIZE,
};
static void __init init_voya(struct fb_info *p, unsigned long addr)
{
p->fix = voyafb_fix;
p->fix.smem_start = addr;
p->var = voyafb_var;
p->fbops = &voyafb_ops;
p->flags = FBINFO_FLAG_DEFAULT;
p->pseudo_palette = pseudo_palette;
fb_alloc_cmap(&p->cmap, 16, 0);
if (register_framebuffer(p) < 0) {
printk(KERN_ERR "VOYAGER GX CRT CSR framebuffer failed to register\n");
return;
}
printk(KERN_INFO "fb%d: VOYAGER GX_CRT CSR frame buffer (%dK RAM detected)\n",
p->node, p->fix.smem_len / 1024);
voya_hw_init();
}
int __init voyafb_init7(void)
{
struct fb_info *p = &voyafb_info;
unsigned long addr, size;
addr = VOY_VRAM_TOP6;
size = MAX_HWC_MEM_SIZE;
p->screen_base = ioremap((u_long)addr,
ALLOCATED_FB_MEM_SIZE);
if (p->screen_base == NULL) {
return -ENOMEM;
}
init_voya(p, addr);
memset(p->screen_base, 0, MAX_HWC_MEM_SIZE);
return 0;
}
static void __exit voyafb_exit(void)
{
*(volatile unsigned long *)(CRT_HWC_ADDRESS) &= 0x7fffffff;
}
static int change_mode(struct fb_var_screeninfo *var)
{
if((var->xoffset < 0)||(var->xoffset > XRES)||
(var->yoffset < 0)||(var->yoffset > YRES))
{
return(-1);
}
*(volatile unsigned long *)(CRT_HWC_LOCATION) = (var->yoffset << 16) |
var->xoffset;
return(0);
}
MODULE_LICENSE("GPL");
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