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acrn-kernel/drivers/video/hitfb.c

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/*
* linux/drivers/video/hitfb.c -- Hitachi LCD frame buffer device
*
* (C) 1999 Mihai Spatar
* (C) 2000 YAEGASHI Takeshi
* (C) 2003, 2004 Paul Mundt
* (C) 2003, 2004 Andriy Skulysh
*
* 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.
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/tty.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/fb.h>
#include <asm/machvec.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/hd64461/hd64461.h>
#ifdef MACH_HP600
#include <asm/cpu/dac.h>
#include <asm/hp6xx/hp6xx.h>
#endif
#define WIDTH 640
static struct fb_var_screeninfo hitfb_var __initdata = {
.activate = FB_ACTIVATE_NOW,
.height = -1,
.width = -1,
.vmode = FB_VMODE_NONINTERLACED,
};
static struct fb_fix_screeninfo hitfb_fix __initdata = {
.id = "Hitachi HD64461",
.type = FB_TYPE_PACKED_PIXELS,
.ypanstep = 8,
.accel = FB_ACCEL_NONE,
};
static u32 pseudo_palette[16];
static struct fb_info fb_info;
static inline void hitfb_accel_wait(void)
{
while (fb_readw(HD64461_GRCFGR) & HD64461_GRCFGR_ACCSTATUS) ;
}
static inline void hitfb_accel_start(int truecolor)
{
if (truecolor) {
fb_writew(6, HD64461_GRCFGR);
} else {
fb_writew(7, HD64461_GRCFGR);
}
}
static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
u16 width, u16 height)
{
u32 saddr = WIDTH * dy + dx;
if (truecolor)
saddr <<= 1;
fb_writew(width, HD64461_BBTDWR);
fb_writew(height, HD64461_BBTDHR);
fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
fb_writew(saddr >> 16, HD64461_BBTDSARH);
}
static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
u16 width, u16 height, u16 color)
{
hitfb_accel_set_dest(truecolor, dx, dy, width, height);
fb_writew(0x00f0, HD64461_BBTROPR);
fb_writew(16, HD64461_BBTMDR);
fb_writew(color, HD64461_GRSCR);
hitfb_accel_start(truecolor);
}
static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
u16 dy, u16 width, u16 height, u16 rop,
u32 mask_addr)
{
u32 saddr, daddr;
u32 maddr = 0;
fb_writew(rop, HD64461_BBTROPR);
if ((sy < dy) || ((sy == dy) && (sx <= dx))) {
saddr = WIDTH * (sy + height) + sx + width;
daddr = WIDTH * (dy + height) + dx + width;
if (mask_addr) {
if (truecolor)
maddr = ((width >> 3) + 1) * (height + 1) - 1;
else
maddr =
(((width >> 4) + 1) * (height + 1) - 1) * 2;
fb_writew((1 << 5) | 1, HD64461_BBTMDR);
} else
fb_writew(1, HD64461_BBTMDR);
} else {
saddr = WIDTH * sy + sx;
daddr = WIDTH * dy + dx;
if (mask_addr) {
fb_writew((1 << 5), HD64461_BBTMDR);
} else {
fb_writew(0, HD64461_BBTMDR);
}
}
if (truecolor) {
saddr <<= 1;
daddr <<= 1;
}
fb_writew(width, HD64461_BBTDWR);
fb_writew(height, HD64461_BBTDHR);
fb_writew(saddr & 0xffff, HD64461_BBTSSARL);
fb_writew(saddr >> 16, HD64461_BBTSSARH);
fb_writew(daddr & 0xffff, HD64461_BBTDSARL);
fb_writew(daddr >> 16, HD64461_BBTDSARH);
if (mask_addr) {
maddr += mask_addr;
fb_writew(maddr & 0xffff, HD64461_BBTMARL);
fb_writew(maddr >> 16, HD64461_BBTMARH);
}
hitfb_accel_start(truecolor);
}
static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
{
if (rect->rop != ROP_COPY)
cfb_fillrect(p, rect);
else {
fb_writew(0x00f0, HD64461_BBTROPR);
fb_writew(16, HD64461_BBTMDR);
if (p->var.bits_per_pixel == 16) {
fb_writew(((u32 *) (p->pseudo_palette))[rect->color],
HD64461_GRSCR);
hitfb_accel_set_dest(1, rect->dx, rect->dy, rect->width,
rect->height);
hitfb_accel_start(1);
} else {
fb_writew(rect->color, HD64461_GRSCR);
hitfb_accel_set_dest(0, rect->dx, rect->dy, rect->width,
rect->height);
hitfb_accel_start(0);
}
hitfb_accel_wait();
}
}
static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
{
hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
area->dx, area->dy, area->width, area->height,
0x00cc, 0);
hitfb_accel_wait();
}
static int hitfb_pan_display(struct fb_var_screeninfo *var,
struct fb_info *info)
{
int xoffset = var->xoffset;
int yoffset = var->yoffset;
if (xoffset != 0)
return -EINVAL;
fb_writew(yoffset, HD64461_LCDCBAR);
return 0;
}
int hitfb_blank(int blank_mode, struct fb_info *info)
{
unsigned short v;
if (blank_mode) {
#ifdef MACH_HP600
sh_dac_disable(DAC_LCD_BRIGHTNESS);
v = fb_readw(HD64461_GPBDR);
v |= HD64461_GPBDR_LCDOFF;
fb_writew(v, HD64461_GPBDR);
#endif
v = fb_readw(HD64461_LDR1);
v &= ~HD64461_LDR1_DON;
fb_writew(v, HD64461_LDR1);
v = fb_readw(HD64461_LCDCCR);
v |= HD64461_LCDCCR_MOFF;
fb_writew(v, HD64461_LCDCCR);
v = fb_readw(HD64461_STBCR);
v |= HD64461_STBCR_SLCDST;
fb_writew(v, HD64461_STBCR);
} else {
v = fb_readw(HD64461_STBCR);
v &= ~HD64461_STBCR_SLCDST;
fb_writew(v, HD64461_STBCR);
#ifdef MACH_HP600
sh_dac_enable(DAC_LCD_BRIGHTNESS);
v = fb_readw(HD64461_GPBDR);
v &= ~HD64461_GPBDR_LCDOFF;
fb_writew(v, HD64461_GPBDR);
#endif
v = fb_readw(HD64461_LDR1);
v |= HD64461_LDR1_DON;
fb_writew(v, HD64461_LDR1);
v = fb_readw(HD64461_LCDCCR);
v &= ~HD64461_LCDCCR_MOFF;
fb_writew(v, HD64461_LCDCCR);
}
return 0;
}
static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp, struct fb_info *info)
{
if (regno >= info->cmap.len)
return 1;
switch (info->var.bits_per_pixel) {
case 8:
fb_writew(regno << 8, HD64461_CPTWAR);
fb_writew(red >> 10, HD64461_CPTWDR);
fb_writew(green >> 10, HD64461_CPTWDR);
fb_writew(blue >> 10, HD64461_CPTWDR);
break;
case 16:
((u32 *) (info->pseudo_palette))[regno] =
((red & 0xf800)) |
((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
break;
}
return 0;
}
static struct fb_ops hitfb_ops = {
.owner = THIS_MODULE,
.fb_setcolreg = hitfb_setcolreg,
.fb_blank = hitfb_blank,
.fb_pan_display = hitfb_pan_display,
.fb_fillrect = hitfb_fillrect,
.fb_copyarea = hitfb_copyarea,
.fb_imageblit = cfb_imageblit,
};
int __init hitfb_init(void)
{
unsigned short lcdclor, ldr3, ldvndr;
int size;
if (fb_get_options("hitfb", NULL))
return -ENODEV;
hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 512 * 1024;
lcdclor = fb_readw(HD64461_LCDCLOR);
ldvndr = fb_readw(HD64461_LDVNDR);
ldr3 = fb_readw(HD64461_LDR3);
switch (ldr3 & 15) {
default:
case 4:
hitfb_var.bits_per_pixel = 8;
hitfb_var.xres = lcdclor;
break;
case 8:
hitfb_var.bits_per_pixel = 16;
hitfb_var.xres = lcdclor / 2;
break;
}
hitfb_fix.line_length = lcdclor;
hitfb_fix.visual = (hitfb_var.bits_per_pixel == 8) ?
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
hitfb_var.yres = ldvndr + 1;
hitfb_var.xres_virtual = hitfb_var.xres;
hitfb_var.yres_virtual = hitfb_fix.smem_len / lcdclor;
switch (hitfb_var.bits_per_pixel) {
case 8:
hitfb_var.red.offset = 0;
hitfb_var.red.length = 8;
hitfb_var.green.offset = 0;
hitfb_var.green.length = 8;
hitfb_var.blue.offset = 0;
hitfb_var.blue.length = 8;
hitfb_var.transp.offset = 0;
hitfb_var.transp.length = 0;
break;
case 16: /* RGB 565 */
hitfb_var.red.offset = 11;
hitfb_var.red.length = 5;
hitfb_var.green.offset = 5;
hitfb_var.green.length = 6;
hitfb_var.blue.offset = 0;
hitfb_var.blue.length = 5;
hitfb_var.transp.offset = 0;
hitfb_var.transp.length = 0;
break;
}
fb_info.fbops = &hitfb_ops;
fb_info.var = hitfb_var;
fb_info.fix = hitfb_fix;
fb_info.pseudo_palette = pseudo_palette;
fb_info.flags = FBINFO_DEFAULT;
fb_info.screen_base = (void *)hitfb_fix.smem_start;
size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
fb_alloc_cmap(&fb_info.cmap, size, 0);
if (register_framebuffer(&fb_info) < 0)
return -EINVAL;
printk(KERN_INFO "fb%d: %s frame buffer device\n",
fb_info.node, fb_info.fix.id);
return 0;
}
static void __exit hitfb_exit(void)
{
unregister_framebuffer(&fb_info);
}
module_init(hitfb_init);
module_exit(hitfb_exit);
MODULE_LICENSE("GPL");
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